CN211547827U - Waterproof structure at joint of concrete bottom plates of new and old buildings - Google Patents
Waterproof structure at joint of concrete bottom plates of new and old buildings Download PDFInfo
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- CN211547827U CN211547827U CN201921470957.7U CN201921470957U CN211547827U CN 211547827 U CN211547827 U CN 211547827U CN 201921470957 U CN201921470957 U CN 201921470957U CN 211547827 U CN211547827 U CN 211547827U
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Abstract
The utility model discloses a new and old building concrete bottom plate links up waterproof construction of department, include: the old building connecting area and the new building concrete bottom plate are positioned on two sides of the vertical joint, and the old building connecting area sequentially comprises the old building concrete bottom plate, a new and old waterproof layer horizontal lap joint area and a brick moulding bed permanent wall from top to bottom; a concrete cushion layer is arranged below the brick bed film permanent wall and the new building concrete bottom plate, and the vertical joint of the brick bed film permanent wall and the new building concrete bottom plate is thickened; the first lap joint part of the first new waterproof layer is adhered to the lower surface of the horizontal lap joint area of the new waterproof layer and the lower surface of the horizontal lap joint area of the old waterproof layer, and the second lap joint part is adhered to the vertical surface of the old building concrete bottom plate after being turned upwards at the vertical joint; the second new waterproof layer is bonded with the second lap joint part, and the rest part is bonded with the vertical surface of the brick bed permanent wall and then laid above the concrete cushion layer below the concrete bottom plate of the new building. The overlapping strength of the old waterproof layer and the new waterproof layer is improved, and the possibility of synchronous tearing of the new waterproof layer and the old waterproof layer is reduced.
Description
Technical Field
The utility model relates to a waterproof technical field, more specifically relates to a new and old building concrete bottom plate links up waterproof construction of department.
Background
In the existing engineering waterproof, the common method for waterproof treatment of the joint part of the new concrete building and the old concrete building is that later-stage engineering waterproof and earlier-stage engineering waterproof are overlapped to form a certain overlapping length, so that the whole waterproof design requirement is met. Referring to 'application of waterproof treatment on new and old concrete joint parts' in the second phase of 2009 from 'journal of science and technology creation', a waterproof treatment method is as follows:
(1) cleaning the exposed waterproof coiled material at the broken part around the original hole of the old building, shearing the waterproof coiled material orderly, and ensuring that the length of the exposed intact part is not less than 100 mm;
(2) cleaning the broken connecting part around the original hole structure, then picking and chiseling a groove with the width of 50mm and the depth of 10mm in the middle of the structure, and cleaning;
(3) the newly constructed cushion layer is 100mm lower than the original cushion layer, after the cushion layer is dried and qualified by inspection, the base oil is coated for coil construction, the new coil is firstly paved and pasted during construction, then the original coil is paved and pasted on the upper part of the newly paved coil, and the lap edge is ensured to be not less than 100 mm. When the coiled material is paved and baked, construction is carried out according to the standard strictly, so that firm bonding is ensured, and the phenomena of opening, hollowing, untight edge sealing and the like are avoided;
(4) additionally laying a cover strip with the width of 200mm at the lap edge of the new and old coiled materials, respectively lapping the lap edges of 100mm at two sides, tightly heating and then sealing edges;
(5) after the construction of the base bottom plate coiled material and the waterproof protective layer is finished, the water-swelling rubber water stop strips are arranged at the middle grooves around the original structure which is removed in the previous period, and the water-swelling rubber water stop strips are reliably fixed to ensure that the water-swelling rubber water stop strips cannot slip off during concrete construction;
(6) and after the rubber water stop bars are installed, the bottom plate steel bars are bound and concrete is poured, the concrete strength grade is C35, the impermeability grade is S10, and the concrete needs to be vibrated compactly during pouring so as to achieve the self-waterproof effect of the concrete.
The above prior art has the following disadvantages:
1. the old structure building adopts mostly asphalt waterproof materials, and the destruction resistance of material itself is relatively poor, hardly guarantees when chiseling the surface course that the intact of old waterproof layer is harmless, and partial age is too long probably waterproof layer performance itself has descended by a wide margin to lead to hardly guaranteeing completely that old waterproof layer can reserve effectual overlap edge.
2. The compaction coefficient of the newly excavated soil layer hardly reaches the compaction degree of the original soil layer after settlement is finished, and when the newly built building is high and the foundation bears large load, it is difficult to ensure that no settlement crack occurs between the newly constructed building and the old building, so that the waterproof layer fails.
3. The pouring of concrete is difficult to control on site, and the phenomenon that the pre-installed water-swelling rubber water stop strip does not fall off is difficult to ensure.
4. The treatment method does not indicate the specific thickness of the new cushion layer and the old cushion layer, and when the newly constructed cushion layer and the original cushion layer are lower than the same thickness, the overall settlement depth is difficult to reduce under the action of later structural stress, so that the cushion layer fracture phenomenon is difficult to avoid, and the coiled material is fully adhered and is easy to crack synchronously along with the cushion layer.
Therefore, it is necessary to provide a waterproof structure for the concrete floor joint of the new and old buildings, which can improve the repair feasibility of the old waterproof layer and the lap joint strength with the new waterproof layer, increase the bearing coefficient of the foundation of the joint part, and reduce the possibility of the synchronous tearing of the new and old waterproof layers caused by the uneven settlement of the foundation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a new and old building concrete bottom plate links up waterproof construction of department realizes improving the restoration feasibility of old waterproof layer and with the overlap joint intensity of new waterproof layer, increases the bearing coefficient that connects the position basis to and reduce the synchronous torn possibility of new and old waterproof layer that causes because the basis is inhomogeneous to subside.
In order to achieve the above object, the utility model provides a new and old building concrete bottom plate links up waterproof construction of department, include:
the system comprises an old building connecting area and a new building concrete bottom plate, wherein the old building connecting area and the new building concrete bottom plate are positioned on two sides of a vertical joint, the old building connecting area sequentially comprises an old building concrete bottom plate, a new and old waterproof layer horizontal lap joint area, a flexible filling layer and a brick moulding bed permanent wall from top to bottom, the brick moulding bed permanent wall is arranged below the new and old waterproof layer horizontal lap joint area, and the flexible filling layer is arranged between the new and old waterproof layer horizontal lap joint area and the brick moulding bed permanent wall;
the brick bed film permanent wall is arranged on a concrete cushion layer at the lower part of the new building concrete bottom plate, and the concrete cushion layer is thickened at the vertical joint of the brick bed film permanent wall and the new building concrete bottom plate;
the waterproof structure comprises a first new waterproof layer and a second new waterproof layer, wherein the first new waterproof layer comprises a first lap joint part and a second lap joint part, the upper surface of the first lap joint part is adhered to the lower surface of an old waterproof layer in a horizontal lap joint area of the old waterproof layer and the new waterproof layer, and the surface of one side of the second lap joint part is adhered to the vertical surface of the old building concrete bottom plate at the vertical joint position after the second lap joint part is turned up at the vertical joint position;
and the edge part of the second new waterproof layer is adhered to the surface of the other side of the second lap joint part, and the rest part of the second new waterproof layer is adhered to the vertical surface of the brick bed permanent wall and then laid above the concrete cushion layer below the concrete bottom plate of the new building.
Optionally, the materials of the first new waterproof layer comprise a non-cured material layer and a high polymer modified asphalt roll layer, the non-cured material layer of the first lap joint part is fully adhered and connected with the lower surface of the old waterproof layer in the new and old horizontal lap joint area of the waterproof layer, the non-cured material layer of the second lap joint part is fully adhered and connected with the vertical surface of the old building concrete bottom plate, and the surface of the high polymer modified asphalt roll layer of the second lap joint part is fully adhered and connected with the second new waterproof layer;
when the second new waterproof layer adopts synthetic polymer waterproof coiled materials, the surface of the high polymer modified asphalt coiled material layer of the second lap joint part is bonded with the second new waterproof layer by double-faced butyl adhesive tapes or double-faced tubeless self-adhesive coiled materials.
Optionally, a lower surface of the first strap is coated with a non-curable material.
Optionally, a sealing paste is arranged at the edge closing position of the first overlapping part, which is close to the non-chiseled area of the original cushion layer, and the first overlapping part is fixedly connected with the old building concrete bottom plate in a mechanical fixing mode.
Optionally, the second overlapping portion of the first new waterproof layer and the second new waterproof layer are provided with a sealant at the bonding joint of the old building concrete floor vertical surface.
Optionally, a flexible filling layer is arranged between the top end of the brick-bed film permanent wall and the lower surface of the first lap joint part, and the flexible filling layer is made of foamed polyurethane or polyurethane sealant.
Optionally, the outer layer of the vertical surface of the permanent wall of the brick moulding bed is a cement leveling layer, the vertical surface of the permanent wall of the brick moulding bed is provided with horizontally distributed gaps, the gaps are embedded with flexible PE rods, one part of the flexible PE rods is embedded into the gaps, and the other part of the flexible PE rods protrudes out of the surface of the vertical surface of the permanent wall of the brick moulding bed.
Optionally, an isolation film is arranged on the surface of one side area, away from the flexible PE rod, of the second new waterproof layer corresponding to the flexible PE rod.
Optionally, a blocky flexible thermal insulation material is arranged on one side, away from the brick bed film permanent wall facade, of the second new waterproof layer corresponding to the lower area of the flexible PE rod, and the blocky flexible thermal insulation material is in point bonding connection with the surface of one side, away from the brick bed film permanent wall facade, of the second new waterproof layer.
Optionally, an additional waterproof layer is arranged at the intersection of the concrete cushion layer and the bottom of the brick-bed film permanent wall, one end of the additional waterproof layer is bonded with the lower part of the vertical surface of the brick-bed film permanent wall, and the other end of the additional waterproof layer is bonded with the surface of the concrete cushion layer below the new building concrete bottom plate and close to the joint.
Optionally, a third new waterproof layer is arranged between the old building concrete bottom plate vertical surface and the new building concrete bottom plate vertical surface at the joint, and the third new waterproof layer is a cement-based capillary crystalline waterproof coating; and a plurality of embedded reinforcing steel bars and water swelling water stop rings are arranged between the old building concrete bottom plate vertical face and the new building concrete bottom plate vertical face from bottom to top.
The beneficial effects of the utility model reside in that:
the new and old waterproof layer horizontal overlapping area is formed above the original cushion layer, so that a complete and effective new and old waterproof layer horizontal overlapping area can be formed under the condition that the old waterproof layer is not damaged, and the overlapping strength of the new and old waterproof layers is improved; the thickness of the cushion layer at the lower part of the joint part of the concrete bottom plates of the new building and the old building is thickened, the bearing coefficient of the foundation of the joint part is increased, and the amplitude of the uneven settlement of the foundation which possibly occurs in the later period is reduced to reduce the synchronous tearing of the waterproof layer caused by the uneven settlement of the foundation.
Furthermore, a first waterproof arrangement is arranged in a mode of combining the non-curing material and the coiled material, the first waterproof arrangement is fixed in a mechanical fixing mode, the closing-in position of a newly-made waterproof layer on the old bottom plate is sealed through the characteristics of never curing and high adhesion of the non-curing material, the possibility of water source passage generation possibly exists due to the fact that sealing is not tight, the second lap joint part of the first new waterproof layer is turned upwards to the joint of the vertical face of the old building concrete bottom plate, and the generation of the water source passage is reduced for the second time through the self stress of concrete. The compactness between the brick base film protective layer and the newly made coiled material is ensured by arranging the foamed polyurethane for sealing and embedding. Through increasing flexible PE stick department slip layer setting, increase waterproofing membrane's reserve volume in order to guarantee at the in-process that new and old structure subsides the deformation, the waterproof layer has sufficient surplus to adapt to and the tearing condition of waterproof layer can not appear and takes place.
The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 shows a schematic structural diagram of a waterproof structure of a joint of concrete bottom plates of old and new buildings according to an embodiment of the present invention.
Fig. 2 shows a construction node diagram of a waterproof structure of a new and old building concrete bottom plate junction according to an embodiment of the present invention.
Fig. 3 shows a partial enlarged view of a second lap joint overlapping treatment of a waterproof structure of a new and old building concrete floor junction according to an embodiment of the present invention.
Description of reference numerals:
1. a horizontal lap joint area of the new waterproof layer and the old waterproof layer; 2. a first new waterproof layer; 3. a flexible filler layer; 4. brick moulding bed permanent wall; 5. a flexible PE rod; 6. adding a waterproof layer; 7. a second new waterproof layer; 8. an isolation film; 9. a block-shaped flexible thermal insulation material; 10. a concrete cushion; 11. mechanically fixing; 12. a water stop ring expanding when encountering water; 13. old building concrete floors; 14. a new building concrete floor; 15. an old waterproof layer; 16. a cement-based infiltration crystallization waterproof coating; 17. reinforcing steel bars; 18. a layer of non-solidified material; 19. a high polymer modified asphalt coiled material layer; 20. double-sided lapping adhesive tapes; 21. and (7) sealing paste.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 shows a schematic structural diagram of a waterproof structure of a new and old building concrete bottom plate junction according to an embodiment of the present invention, as shown in fig. 1, a waterproof structure of a new and old building concrete bottom plate junction includes:
the building construction method comprises the following steps that an old building joint area and a new building concrete bottom plate 14 are positioned on two sides of a vertical joint, the old building joint area sequentially comprises an old building concrete bottom plate 13, a new and old waterproof layer horizontal lap joint area 1, a flexible filling layer 3 and a brick moulding bed permanent wall 4 from top to bottom, wherein the brick moulding bed permanent wall 4 is arranged below the new and old waterproof layer horizontal lap joint area 1, and the flexible filling layer is arranged between the new and old waterproof layer horizontal lap joint area and the brick moulding bed permanent wall;
the brick-bed film permanent wall 4 is arranged on a concrete cushion layer 10 at the lower part of the new building concrete bottom plate 14, and the concrete cushion layer 10 is thickened at the vertical joint of the brick-bed film permanent wall 4 and the new building concrete bottom plate 14;
a first new waterproof layer 2, wherein one part of the first new waterproof layer 2 is a first lap joint part, the rest part of the first new waterproof layer 2 is a second lap joint part, the upper surface of the first lap joint part is adhered to the lower surface of an old waterproof layer 15 of the new and old waterproof layer horizontal lap joint area 1, and the surface of one side of the second lap joint part after being turned up at the vertical joint part is adhered to the vertical surface of the old building concrete bottom plate 13 at the vertical joint part;
and the edge part of the second new waterproof layer 7 is adhered to the other side surface of the second lap joint part, and the rest part of the second new waterproof layer 7 is adhered to the vertical surface of the brick bed permanent wall 4 and then laid above the concrete cushion layer 10 below the concrete bottom plate 14 of the new building.
Specifically, by utilizing the characteristic that the original cushion layer part of the old building is poured on the protective layer on the upper part of the waterproof layer (the bonding strength of the protective layer and the waterproof layer is higher than that of the waterproof layer and the cushion layer), the old building joint area vertically excavates and cleans the lower part of the old waterproof layer (because the lower part of the waterproof layer is the cushion layer, and 90% of the compactness of the cushion layer is relatively poor, the strength is low, the cushion layer is loose during excavation, and the old waterproof layer is not easy to damage). Therefore, the excavation of the lower part of the old waterproof layer is reasonable, and the corresponding horizontal lap joint part 1 of the old waterproof layer and the new waterproof layer can be cleaned, so that an effective lap joint area can be reserved in the old waterproof layer 15; in the specific implementation process, only the cushion layer is chiseled, the old waterproof layer 15 is not moved, the old waterproof layer 15 may be damaged to a certain extent, but the damaged part can be reinforced and repaired by adopting a non-curing material, and the first new waterproof layer 2 and the old waterproof layer 15 are provided with bonding strength; the thickness of the cushion layer at the joint part is increased by arranging the brick green film permanent wall 4 and the concrete cushion layer 10, so that the bearing coefficient of the foundation of the joint part is increased, and the amplitude of the uneven settlement of the foundation possibly occurring in the later stage is reduced to reduce the synchronous tearing of the waterproof layer caused by the uneven settlement of the foundation.
In this embodiment, the material of the first new waterproof layer 2 includes a non-cured material layer 18 and a high polymer modified asphalt roll layer 19, the non-cured material layer 18 of the first overlapping part is fully bonded to the lower surface of the old waterproof layer 15 located in the horizontal overlapping area 1 of the new and old waterproof layers, the non-cured material layer 18 of the second overlapping part is fully bonded to the vertical surface of the old building concrete bottom plate 13, and the surface of the high polymer modified asphalt roll layer 19 of the second overlapping part is fully bonded to the second new waterproof layer 7; when the second new waterproof layer adopts synthetic polymer waterproof coiled materials, the surface of the high polymer modified asphalt coiled material layer of the second lap joint part is bonded with the second new waterproof layer by double-faced butyl adhesive tapes or double-faced tubeless self-adhesive coiled materials.
Specifically, the first new waterproof layer 2 is combined by a non-solidified material layer 18 and a high polymer modified asphalt coil material layer 19, a first waterproof measure is set by fully adhering a first overlapping part of the first new waterproof layer 2 and the lower surface of an old waterproof layer 15 positioned in a horizontal overlapping area 1 of a new and old waterproof layer, a composite waterproof layer of a second overlapping part of the first new waterproof layer 2 is turned upwards to the bottom of a steel bar under an embedded steel bar 17 arranged on the vertical surface of an old building concrete bottom plate 13 on the upper part of the old waterproof layer, and the later surface of the composite waterproof layer is fully adhered and overlapped with a second new waterproof layer 7, wherein the coil material of the second new waterproof layer 7 can be the high polymer modified asphalt coil material layer 19 or a synthetic polymer coil material, if the synthetic polymer coil material is adopted, due to the difference of the material properties of the two materials, a double-sided overlapping adhesive tape 20 or a double-sided non-adhesive coil material can be fully, and through additionally arranging the embedded steel bars 17 between the new building concrete bottom plate 14 and the old building concrete bottom plate 13, the integrity, compactness and high clamping force of new and old concrete are improved and enhanced, and the generation of a water source passage is secondarily reduced. And establishing a second waterproof sealing measure (the second waterproof sealing measure is effectively established through the clamping force between the concrete and the caking property of the non-cured material, the sealing property of the sealing material and the lap joint treatment between the coiled materials).
In this embodiment, the lower surface of the first overlapping part is coated with a non-curable material.
Specifically, the lower surface of the first joint portion of the first new waterproof layer 2 is coated with the non-curable material again to increase the sealing property.
It should be noted that the non-curing material layer 18 and the non-curing material coated on the lower surface of the first overlapping part in this embodiment are both made of special non-curing materials, and the special non-curing materials are the existing brand new and upgraded non-curing rubber asphalt waterproof coating, and are mainly prepared by taking asphalt as a base material, adding rubber, an auxiliary agent and a chemical agent, and adopting an advanced chemical technology, and the materials have stable structure, have the conventional performances of lasting unhardened and full-bonding, and also have the special performances of low viscosity, high heat resistance, environmental protection, less smoke, self-healing, puncture resistance, low-temperature spraying or blade coating construction, energy saving, environmental protection, and meeting the requirements of composite waterproof and anti-sliding of facades and coiled materials.
In this embodiment, the first overlapping portion is provided with a sealant at a position close to the edge closing-up of the unreleased area of the original cushion layer and is fixedly connected with the old building concrete bottom plate 13 in a mechanical fixing 11 manner.
Specifically, the sealing paste is arranged at the edge closing position of the first overlapping part close to the unclamped area of the original cushion layer, the mechanical fixing 11 (the fixed position is at the position where the non-curing material is coated) is adopted, and the characteristics of high viscosity and adaptability to stress deformation of the non-curing material are utilized, so that the tightness during mechanical fixing 11 is enhanced. Wherein mechanical fixation 11 can select point type fixed or linear fixed, and the point type is fixed and is fixed the coiled material promptly using special gasket and screw, and linear fixed is fixed and is fixed the coiled material promptly using special layering and screw, and the rethread covers the layering through using waterproofing membrane cover strip, selects the linear fixed mode in this embodiment.
In this embodiment, the second overlapping portion of the first new waterproof layer 2 and the second new waterproof layer 7 are provided with a sealant 21 at the vertical surface bonding joint of the old building concrete bottom plate 13.
Specifically, referring to fig. 3, the sealing paste 21 is applied to the upper and lower bonding joints of the old building concrete floor vertical surface at the second overlapping part and the second new waterproof layer to reinforce the waterproof property of the bonding part of the first new waterproof layer 2 and the second new waterproof layer 7.
In this embodiment, a flexible filling layer 3 is disposed between the top end of the brick-bed membrane permanent wall 4 and the lower surface of the first overlapping portion, and the flexible filling layer 3 is made of foamed polyurethane or polyurethane sealant.
Specifically, the compactness between the brick bed film protective layer and the newly made coiled material is ensured by arranging foamed polyurethane or polyurethane sealant for sealing and embedding the gap between the top end of the brick bed film permanent wall 4 and the lower surface of the first lap joint part.
In this embodiment, the outer layer of the vertical surface of the permanent wall 4 of the brick molding bed is a cement leveling layer, the vertical surface of the permanent wall 4 of the brick molding bed is provided with horizontally distributed gaps, the gaps are embedded with flexible PE rods 5, one part of the flexible PE rods 5 is embedded in the gaps, and the other part protrudes out of the surface of the vertical surface of the permanent wall 4 of the brick molding bed.
Specifically, the flexible PE rod 5 can jack up a part of the second new waterproof layer 7, so that the second new waterproof layer 7 at the position has a certain deformation allowance at the joint of the new building and the old building, thereby ensuring that the second new waterproof roll has a sufficient height and an excessive width to participate in the subsequent downward sliding deformation caused by the sinking of the new building.
In this embodiment, an isolation film 8 is disposed on a surface of a side region, away from the flexible PE rod 5, of the second new waterproof layer 7 corresponding to the flexible PE rod 5.
Specifically, the outer side (the side far away from the flexible PE rod 5) of the second new waterproof layer 7 roll at the flexible PE rod 5 position is bonded to the outer side surface of the second new waterproof layer 7 roll by using an adhesive tape type barrier material, and the bonding width of the adhesive tape type barrier material needs to be larger than the range of the flexible PE rod 5.
In this embodiment, a block-shaped flexible thermal insulation material 9 is disposed on one side, away from the vertical surface of the brick moulding bed permanent wall 4, of the second new waterproof layer 7 corresponding to the lower region of the flexible PE rod 5, and the thermal insulation material is in point bonding connection with the surface of one side, away from the vertical surface of the brick moulding bed permanent wall 4, of the second new waterproof layer.
Specifically, the blocky flexible heat-insulating material 9 is arranged on the surface of the waterproof layer at the lower part of the flexible PE rod 5 at the permanent wall part, the blocky flexible heat-insulating material 9 can be fixed with the outer side surface of the coiled material of the second new waterproof layer 7 by using a non-solidified material in a point bonding mode, and the arrangement of the blocky flexible heat-insulating material 9 can further ensure that the variable of the second new waterproof layer 7 at the part is sufficient.
In this embodiment, an additional waterproof layer 6 is arranged at the intersection of the concrete cushion layer and the bottom of the brick-bed membrane permanent wall 4, one end of the additional waterproof layer 6 is bonded to the lower part of the vertical surface of the brick-bed membrane permanent wall 4, and the other end of the additional waterproof layer is bonded to the surface of the concrete cushion layer below the new building concrete bottom plate 14 and close to the joint. Specifically, whether the additional waterproof layer 6 is provided or not is performed according to the selected material, if the second new waterproof layer 7 is made of the synthetic polymer-based roll material, the additional waterproof layer 6 may not be provided, and if the second new waterproof layer 7 is made of the synthetic polymer-based roll material, the tubeless double-sided self-adhesive roll material may be used as the additional waterproof layer 6 to enhance the waterproof effect. Typically, conventional non-polymeric bitumen coils are provided with an additional layer 6.
In this embodiment, at the joint, a plurality of embedded steel bars 17 and water-swelling water stop rings 12 are arranged between the old building concrete bottom plate 13 vertical surface and the new building concrete bottom plate 14 vertical surface from bottom to top.
Specifically, the steel bars 17 are additionally implanted between the new concrete bottom plate 14 and the old concrete bottom plate 13 to enhance the integrity between the new concrete building and the old concrete building, and meanwhile, a plurality of water-swelling water stop rings 12 are arranged on the steel bars 17 to perform anti-seepage measures, so that the risk of leakage at the construction gap position is reduced.
Fig. 2 shows according to the utility model discloses an embodiment's a new and old building concrete bottom plate joint's waterproof construction node refines the picture, and fig. 3 shows according to the utility model discloses an embodiment's a new and old building concrete bottom plate joint's waterproof construction's second overlap joint processing partial enlargement, as shown in fig. 2 to fig. 3, a new and old building concrete bottom plate joint's waterproof construction process is:
And 2, excavating 300-500 mm inward of a cushion layer (soil layer) on the lower part of the old building concrete bottom plate 13, excavating the depth of the excavation between 500-1000 mm, chiseling the original cushion layer, and cleaning the original waterproof layer 15 to form a new waterproof layer and an old waterproof layer horizontal lap joint part 1.
And 3, repairing and reinforcing the old waterproof layer 15 from the horizontal lap joint part 1 of the new waterproof layer and the old waterproof layer by using a non-curing material (the thickness is 0.5 mm).
And 4, paving a first new waterproof layer 2 (the non-solidified material layer 18+ the high polymer modified asphalt coil layer 19), wherein the overlapping range of the first overlapping part and the old waterproof layer 15 positioned at the horizontal overlapping part 1 of the new waterproof layer and the old waterproof layer is not less than 200 mm. The non-solidified material layer 18 of the present embodiment is made of a special non-solidified material.
And 5, turning up the second lap joint part of the first new waterproof layer 2 to a position 30mm away from the old waterproof layer on the vertical surface of the old building concrete bottom plate 13, and performing full-bonding construction.
And 6, coating a non-curing material on the lower surface of the first lap joint part again at the head closing position of the first lap joint part of the old waterproof layer 15, wherein the edge of the first lap joint part is close to the unreleased cushion layer part of the old building below the old waterproof layer 15 at the position where the new waterproof layer horizontal lap joint part 1 is arranged, and after the completion, adopting a mechanical fixing part 11 (the fixed position is at the position where the non-curing material is coated), and enhancing the tightness during the mechanical fixing 11 by utilizing the characteristics of high viscosity and adaptive stress deformation of the non-curing material. The non-curing material of the embodiment is a special non-curing material.
And 7, pouring the new building concrete cushion layer 10, and pouring the lower part of the joint of the old building concrete bottom plate 13 and the new building concrete bottom plate 14 with the height increased by more than or equal to 200mm and the width not less than 500mm (so that the anti-settling, anti-cracking and anti-deforming capability of the part is improved).
And 8, backfilling soil at the non-masonry brick bed film permanent wall 4 at the later stage of the original chiseling part, and also backfilling by pouring plain concrete.
And 9, building the brick moulding bed permanent wall 4 (the height is up to the bottom of a newly-made waterproof layer), horizontally arranging a gap with a certain gap on the side surface of the brick moulding bed permanent wall 4, wherein the gap width is 100-150 mm, the depth is 150mm (the flexible PE rod 5 is convenient to embed and fill subsequently), and troweling the surface cement mortar.
And step 10, filling polyurethane sealant or filling foamed polyurethane in the gap between the brick-bed film permanent wall 4 and the first lap joint part of the first new waterproof layer 2.
And 12, paving an additional waterproof layer 6 with the width of 500mm at the intersection part (wall corner) of the bottom of the brick moulding bed permanent wall 4 and the concrete cushion 10 below the new building (paving in a mode of adhering two end points). Whether the additional waterproof layer 6 is arranged or not is performed according to the selected material, if the synthetic polymer coiled material is adopted, the additional waterproof layer 6 is not arranged, and if the synthetic polymer coiled material needs to be provided with the additional waterproof layer 6, the non-padding double-sided self-adhesive coiled material can be adopted to be treated as the additional waterproof layer 6.
Step 13, paving a second new waterproof layer 7 on the large surface of the brick-bed membrane permanent wall 4 and the concrete cushion 10 on the new building side (the construction mode selects a large-surface air-laid construction mode, and the coiled material part of the second lap joint part of the additional waterproof layer 6 and the first new waterproof layer 2 is constructed by a full-adhesion method); if the second new waterproof layer 7 adopts the synthetic polymer coiled material, a pre-paving reverse bonding method is adopted, and the synthetic polymer coiled material can adopt a double-sided adhesive tape or a tubeless double-sided self-adhesive waterproof coiled material for lap-joint treatment when being lapped and bonded with the old waterproof layer 15 arranged at the initial stage and at the horizontal lap-joint part 1 of the new waterproof layer and the old waterproof layer; the position of the brick bed film permanent wall 4 is pre-paved accurately, and the elevation position of the brick bed film permanent wall is the elevation position of 30mm turned over on the vertical surface of the bottom of the old building concrete bottom plate 13, which is the second lap joint part of the first new waterproof layer 2 constructed by lap joint with the old waterproof layer 15 of the new and old waterproof layer horizontal lap joint part 1. And fully bonding the second lap joint coiled material. The old waterproof layer 15 of the horizontal lap joint part 1 of the new waterproof layer and the old waterproof layer and the head part of the first new waterproof layer 2 are sealed by sealant 21.
And step 14, bonding the outer side of the coiled material at the position of the flexible PE rod 5 with the surface of the coiled material by using an adhesive tape type isolation material, wherein the bonding width is 20-30 mm from both sides of the range of the flexible PE rod 5. (sliding layer setting step 2).
And step 16, arranging a 1-2 cm block-shaped flexible heat-insulating material 9 on the surface of the second new waterproof layer 7 at the lower part of the flexible PE rod 5 at the position of the brick-bed membrane permanent wall 4, and using a non-solidified material for spot bonding the flexible heat-insulating material 9 so as to ensure that the second new waterproof layer 7 has sufficient variation at the position. (sliding layer setting step 3)
And step 17, coating a cement-based permeable crystallization waterproof coating 16 on the vertical surface of the joint area of the old building concrete bottom plate 13, and then pouring a new concrete protective layer at the position of the concrete cushion 10 and on the upper part of the second new waterproof layer 7.
And step 18, arranging tie bars on the vertical surface of the connecting position of the old building concrete bottom plate 13 from bottom to top, arranging a water-swelling water stop ring 12 on each tie bar 17, binding the reinforcing steel bars of the new building bottom plate 14 on the concrete cushion layer 10 and the new concrete protective layer on the upper part of the second new waterproof layer 7, and finally pouring the new building concrete bottom plate 14.
In the embodiment, the softer cushion layer below the old waterproof layer at the old building connecting part is chiseled, so that a complete and effective lap joint area can be formed without damaging the old waterproof layer, and the lap joint strength of the new waterproof layer and the old waterproof layer is improved; the thickness of a cushion layer at the joint part of the new building and the old building is thickened, the bearing coefficient of the foundation of the joint part is increased, and the amplitude of uneven settlement of the foundation possibly occurring at the later stage is reduced to reduce synchronous tearing of the waterproof layer caused by uneven settlement of the foundation; the first waterproof setting (and the mechanical fixing mode) is set in a mode of combining the non-curing material layer and the waterproof coiled material, the closing-up part of a newly made waterproof layer on an old bottom plate is sealed through the characteristics of no curing and high adhesion of the non-curing material, and the possibility of water source access generation caused by the lack of tightness in sealing is avoided; the first new waterproof layer coiled material is turned up to the position 30mm in the structural layer, and the generation of a water source passage is reduced for the second time through the self stress of the concrete bottom plate of the new building and the old building; the compactness between the brick base film protective layer and the new waterproof layer coiled material is ensured by arranging the foamed polyurethane sealing embedding; through increasing the setting of sliding layer, increase waterproofing membrane's reserve volume in order to guarantee at the in-process that new and old structure subsides the deformation, new waterproof layer has sufficient surplus to adapt to and the tearing condition of waterproof layer can not appear and takes place.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (11)
1. A waterproof structure of new and old building concrete bottom plate junction, its characterized in that includes:
the system comprises an old building connecting area and a new building concrete bottom plate, wherein the old building connecting area and the new building concrete bottom plate are positioned on two sides of a vertical joint, the old building connecting area sequentially comprises an old building concrete bottom plate, a new and old waterproof layer horizontal lap joint area, a flexible filling layer and a brick moulding bed permanent wall from top to bottom, the brick moulding bed permanent wall is arranged below the new and old waterproof layer horizontal lap joint area, and the flexible filling layer is arranged between the new and old waterproof layer horizontal lap joint area and the brick moulding bed permanent wall;
the brick bed film permanent wall is arranged on a concrete cushion layer at the lower part of the new building concrete bottom plate, and the concrete cushion layer is thickened at the vertical joint of the brick bed film permanent wall and the new building concrete bottom plate;
the waterproof structure comprises a first new waterproof layer and a second new waterproof layer, wherein the first new waterproof layer comprises a first lap joint part and a second lap joint part, the upper surface of the first lap joint part is adhered to the lower surface of an old waterproof layer in a horizontal lap joint area of the old waterproof layer and the new waterproof layer, and the surface of one side of the second lap joint part is adhered to the vertical surface of the old building concrete bottom plate at the vertical joint position after the second lap joint part is turned up at the vertical joint position;
and the edge part of the second new waterproof layer is adhered to the surface of the other side of the second lap joint part, and the rest part of the second new waterproof layer is adhered to the vertical surface of the brick bed permanent wall and then laid above the concrete cushion layer below the concrete bottom plate of the new building.
2. The waterproof structure at the joint of the new and old building concrete bottom plates as claimed in claim 1, wherein the material of the first new waterproof layer comprises a non-cured material layer and a high polymer modified asphalt roll layer, the non-cured material layer of the first lap joint part is fully adhered to the lower surface of the old waterproof layer in the new and old horizontal lap joint area of the waterproof layer, the non-cured material layer of the second lap joint part is fully adhered to the vertical surface of the old building concrete bottom plate, and the surface of the high polymer modified asphalt roll layer of the second lap joint part is fully adhered to the second new waterproof layer;
when the second new waterproof layer adopts synthetic polymer waterproof coiled materials, the surface of the high polymer modified asphalt coiled material layer of the second lap joint part is bonded with the second new waterproof layer by double-faced butyl adhesive tapes or double-faced tubeless self-adhesive coiled materials.
3. The waterproof structure at the junction of new and old building concrete bottom plates as claimed in claim 2, wherein the lower surface of the first lap joint portion is coated with a non-curing material.
4. The waterproof structure for joints of new and old building concrete bottom plates as claimed in claim 1, wherein the first bridging portion is provided with a sealant at a position close to the edge closing-up of the undetached area of the original cushion layer and is fixedly connected with the old building concrete bottom plate in a mechanical fixing manner.
5. The waterproof structure at the junction of new and old building concrete floors as claimed in claim 1, wherein said second overlapping portion of said first new waterproof layer and said second new waterproof layer are provided with a sealant at a vertical bonding bead of said old building concrete floors.
6. The waterproof structure at the joint of the concrete bottom plates of the new and old buildings as claimed in claim 1, wherein a flexible filling layer is provided between the top end of the permanent wall of the brick-bed membrane and the lower surface of the first lap joint part, and the material of the flexible filling layer is foamed polyurethane or polyurethane sealant.
7. The waterproof structure for joints of concrete floors of new and old buildings according to claim 1, wherein the outer layer of the permanent wall vertical surface of the brick-bed film is a cement leveling layer, the permanent wall vertical surface of the brick-bed film is provided with horizontally distributed gaps, the gaps are embedded with flexible PE rods, one part of the flexible PE rods are embedded in the gaps, and the other part of the flexible PE rods protrude out of the surface of the permanent wall vertical surface of the brick-bed film.
8. The waterproof structure at the joint of the concrete bottom plates of the old and new buildings according to claim 7, wherein the surface of the area of one side, away from the flexible PE rod, of the second new waterproof layer corresponding to the flexible PE rod is provided with an isolating membrane.
9. The waterproof structure at the joint of the concrete bottom plates of the new and old buildings according to claim 7, wherein the second new waterproof layer corresponding to the lower region of the flexible PE rod is provided with a block-shaped flexible thermal insulation material on the side away from the vertical surface of the permanent wall of the brick molding bed, and the block-shaped flexible thermal insulation material is in point bonding connection with the surface of the second new waterproof layer on the side away from the vertical surface of the permanent wall of the brick molding bed.
10. The waterproof structure for the joint of the concrete bottom plates of the new and old buildings according to claim 1, wherein an additional waterproof layer is arranged at the intersection of the concrete cushion layer and the bottom of the permanent wall of the brick-bed film, one end of the additional waterproof layer is bonded with the lower part of the vertical surface of the permanent wall of the brick-bed film, and the other end of the additional waterproof layer is bonded with the surface of the concrete cushion layer below the concrete bottom plate of the new building, which is close to the joint.
11. The waterproof structure at the joint of the old and new concrete floors as claimed in claim 1, wherein a third new waterproof layer is arranged between the vertical surface of the old concrete floor and the vertical surface of the new concrete floor at the joint, and the third new waterproof layer is a cement-based permeable crystalline waterproof coating; and a plurality of embedded reinforcing steel bars and water swelling water stop rings are arranged between the old building concrete bottom plate vertical face and the new building concrete bottom plate vertical face from bottom to top.
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| CN114215380A (en) * | 2021-12-25 | 2022-03-22 | 金瀚建设有限公司 | Lengthening construction method for existing building raft foundation |
| CN114718122A (en) * | 2022-03-16 | 2022-07-08 | 中国五冶集团有限公司 | Method for anti-seepage treatment of new and old structure underground corridor foundation connection construction joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114215380A (en) * | 2021-12-25 | 2022-03-22 | 金瀚建设有限公司 | Lengthening construction method for existing building raft foundation |
| CN114718122A (en) * | 2022-03-16 | 2022-07-08 | 中国五冶集团有限公司 | Method for anti-seepage treatment of new and old structure underground corridor foundation connection construction joint |
| WO2023208309A3 (en) * | 2022-04-25 | 2023-12-21 | Emac Lagoons | An innovative system for the construction and operation of an artificial lake with a huge water body used for recreational purposes |
| CN115012458A (en) * | 2022-06-14 | 2022-09-06 | 广州电力设计院有限公司 | External waterproof system and construction method of secondary pouring concrete structure in underground space |
| CN115059290A (en) * | 2022-07-04 | 2022-09-16 | 中国建筑第二工程局有限公司 | Reverse construction method for underground outer wall of narrow fertilizer groove |
| CN118422719A (en) * | 2024-05-28 | 2024-08-02 | 科顺建筑修缮技术有限公司 | Waterproof structural layer, side wall waterproof structure and construction method of side wall waterproof structure |
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