CN210481900U - Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same - Google Patents
Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same Download PDFInfo
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- CN210481900U CN210481900U CN201920467733.4U CN201920467733U CN210481900U CN 210481900 U CN210481900 U CN 210481900U CN 201920467733 U CN201920467733 U CN 201920467733U CN 210481900 U CN210481900 U CN 210481900U
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- 238000010276 construction Methods 0.000 claims abstract description 18
- 238000009417 prefabrication Methods 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 3
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- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
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- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a prefabricated segment of assembling of vertical lattice formula and the high-speed railway road bed of forming of assembling by it, this high-speed railway road bed includes rigid pile foundation and installs the prefabricated segment of assembling of a plurality of vertical lattice formulas on rigid pile foundation, the prefabricated segment of assembling of two adjacent vertical lattice formulas is inlayed through tenon and the recess on the terminal surface and is in the same place, the prestressing anchor cable anchor of segment in the prestressing force pore canal through alternating is assembled in each vertical lattice formula prefabrication, the part formation that the both sides of roof surpassed the bottom plate is encorbelmented the road shoulder, can fill or part has the filler in the prefabricated segment of assembling of vertical lattice formula is filled the inside cavity. The roadbed filling engineering quantity of the roadbed is greatly reduced, and the influence on the surrounding environment is small; the high-speed railway base treatment range is greatly reduced, the high-speed railway base land acquisition area is effectively reduced, and the whole construction cost is obviously reduced.
Description
Technical Field
The utility model belongs to railway roadbed engineering field especially relates to a segment section is assembled in prefabrication of vertical lattice formula and assembles the high-speed railway road bed that forms thereof.
Background
The high-speed railway is extremely sensitive to the sedimentation deformation of the foundation, and the control on the sedimentation deformation of the foundation in the design reaches the millimeter-scale control standard. The traditional roadbed structure mostly adopts a trapezoidal section form, needs bilateral symmetry to put slopes, but when the roadbed is filled to a great extent, the slope putting range of the traditional trapezoidal filling roadbed is greatly increased, so that the transverse size of the roadbed section is greatly improved, the overlarge self weight of the roadbed body also enables the reinforcing range and the reinforcing depth of the high-speed rail foundation to be increased to a great extent, and the earthwork project amount and the project cost are very high. The common action of the adverse factors seriously limits the application of the roadbed structure in the high-speed rail construction, a large amount of phenomena of 'taking roads by bridges' exist in the actual engineering, and the roadbed occupation ratio in the newly-built high-speed rail line is smaller and smaller.
Therefore, aiming at the characteristics of high-speed railway foundation engineering, a novel high-speed railway foundation supporting structure which can effectively reduce the section size and the structural self-weight of a road-fill foundation, has less land occupation, low manufacturing cost and safe and reliable structure is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a section is assembled with prefabricating of vertical lattice formula to high-speed railway road bed that simple structure, cost are lower.
Another object of the utility model is to provide an utilize the prefabricated high-speed railway road bed of assembling the festival section and making of above-mentioned vertical lattice formula.
Therefore, the technical scheme of the utility model is as follows:
a vertical lattice type prefabricated assembly section comprises a top plate, a bottom plate, an inner support structure and two side wall plates which are integrally formed, wherein the two side wall plates are vertically arranged, the top plate and the bottom plate are horizontally arranged, and the left side and the right side of the bottom plate are connected with the bottom edges of the two side wall plates; the width of the top plate is greater than that of the bottom plate, and the top edges of the two side wall plates are connected with the bottom surface of the top plate; the horizontal section of the inner support structure is in a cross shape and is formed by mutually and vertically crossing a first vertical plate and a second vertical plate which are vertically arranged; the left end and the right end of the first vertical plate are respectively connected with the middle parts of the two side wall plates, and the upper end and the lower end of the first vertical plate are respectively connected with the middle parts of the top plate and the bottom plate; the upper end and the lower end of the second vertical plate are respectively connected with the middle parts of the top plate and the bottom plate; reinforcing structures are formed at the joints of the inner support structure, the top plate, the bottom plate and the two side wall plates and the joints of the two vertical plates, anchoring grooves are formed at the positions of connecting nodes on the front end surface and the rear end surface of the vertical lattice type prefabricated assembling segment, and prestressed pore channels which are communicated along the length direction of the vertical lattice type prefabricated assembling segment are arranged in the anchoring grooves; tenons are formed on the front end faces of the two side wall plates and the second vertical plate, grooves are formed in corresponding positions of the corresponding rear end faces, and the tenons and the grooves are matched in shape.
The reinforcing structure is a fillet formed on two sides of the connecting position, and the fillet extends along the whole length direction.
Preferably, the tenon and the groove are respectively formed in the middle of the front end surface and the rear end surface of the two side wall plates and the second vertical plate.
The intersection line of the first vertical plate and the second vertical plate is perpendicular to the bottom plate. Through holes can be formed in the first vertical plate and the second vertical plate as required, so that the first vertical plate and the second vertical plate form a support lattice body.
The length of each vertical lattice type prefabricated assembling segment is 3-6 m.
A high-speed railway foundation comprises a rigid pile foundation and a plurality of vertical lattice type prefabricated assembled sections installed on the rigid pile foundation, wherein two adjacent vertical lattice type prefabricated assembled sections are embedded together through tenons and grooves on end faces, each vertical lattice type prefabricated assembled section is anchored through a prestressed anchor cable inserted in a prestressed pore channel, and overhanging road shoulders are formed by parts, exceeding a bottom plate, of two sides of a top plate.
The internal cavity of the vertical lattice type prefabricated assembly segment can be filled or partially filled with filler so as to enhance the overall stability of the roadbed structure. In addition, be provided with safety fence, cable duct and contact net stand on the shoulder of overhanging road contact net stand department is provided with the slant stiffening rib.
The utility model discloses a high-speed railway road bed compares in traditional high-speed railway fills out road bed structure, has all improved in aspects such as roadbed structure form, interior bearing structure structural arrangement mode, construction method, embedded structure. Its advantages and positive effects are as follows:
1. the roadbed filler filling engineering quantity of the structure is greatly reduced to 0 at most, the influence on the surrounding environment is small, and the structure is suitable for high-speed railway roadbed engineering construction under complex working conditions;
2. the high-speed railway base treatment range is greatly reduced compared with the traditional roadbed structure, the high-speed railway base land acquisition area is effectively reduced, and the whole construction cost of the project is obviously reduced;
3. the roadbed structure can be constructed in two modes of prefabrication assembly and cast-in-place, and the integrity and the stability of the box-type roadbed structure are effectively guaranteed through the inner support structure, the tenon-groove embedding structure at the joint positions of the side wall plates and the bottom plate.
4. The utility model discloses a high-speed railway base is applicable to interval high-speed railway road bed, closes on high-speed railway newly-built road bed, platform road bed high-speed railway road bed engineering, accords with the future direction of optimizing the improvement of china high-speed railway base engineering, has higher engineering popularization and application and worth.
Drawings
Fig. 1 is a schematic perspective view of a vertical lattice type prefabricated segment of the present invention;
FIG. 2 is a final assembly effect diagram of the multi-section prefabricated sections of the present invention;
fig. 3 is a schematic view of the sectional structure of the high-speed railway roadbed of the present invention.
In the figure:
1. assembling segment 1a, top plate 1b and side wall plate
1c, a bottom plate 1d, an inner supporting structure 2 and an overhanging road shoulder
3. Rigid pile foundation 4, plastering angle 5 and track base plate
6. Protective fence 7a, tenon 7b and groove
8. Anchoring groove 9, prestressed duct 10 and through hole
11a, first vertical plate 11b and second vertical plate
Detailed Description
The structure of the present invention will be described in detail with reference to the accompanying drawings.
The utility model discloses the width that mentions in indicates along the road bed width direction, and length indicates along the railway line direction.
Referring to fig. 1-3, the vertical lattice type prefabricated assembly segment 1 of the present invention includes an integrally formed top plate 1a, a bottom plate 1c, an inner support structure 1d and two side wall plates 1b, wherein the two side wall plates 1b are vertically disposed, the top plate 1a and the bottom plate 1c are horizontally disposed, and the left and right sides of the bottom plate 1c are connected to the bottom edges of the two side wall plates 1 b; the width of the top plate 1a is larger than that of the bottom plate 1c, and the top edges of the two side wall plates 1b are connected with the bottom surface of the top plate 1 a; the horizontal section of the inner support structure 1d is in a cross shape and is formed by mutually and vertically crossing a first vertical plate 11a and a second vertical plate 11b which are vertically arranged; the left end and the right end of the first vertical plate are respectively connected with the middle parts of the two side wall plates 1b, and the upper end and the lower end of the first vertical plate are respectively connected with the middle parts of the top plate 1a and the bottom plate 1 c; the upper end and the lower end of the second vertical plate are respectively connected with the middle parts of the top plate 1a and the bottom plate 1 c; reinforcing structures are formed at the joints of the inner support structure 1d, the top plate 1a, the bottom plate 1c and the two side wall plates 1b and the joints of the two vertical plates, anchoring grooves 8 are formed at the positions of each connecting node on the front end surface and the rear end surface of the vertical lattice prefabricated assembly segment, and prestressed channels 9 which are communicated along the length direction of the vertical lattice prefabricated assembly segment are arranged in the anchoring grooves 8; tenon 7a is formed on the front end surfaces of the two side wall plates 1b and the second vertical plate 11b, a groove 7b is formed at the corresponding position of the corresponding rear end surface, and the shape of the tenon is matched with that of the groove.
The reinforcing structure is a fillet 4 formed on both sides of the connecting position, and the fillet extends along the whole length direction. Preferably, the tenon and the groove are respectively formed in the middle of the front end surface and the rear end surface of the two side wall plates 1b and the second vertical plate 11 b.
The intersecting line of the first vertical plate 11a and the second vertical plate 11b is perpendicular to the bottom plate 1c, through holes 10 are formed on the first vertical plate 11a and the second vertical plate 11b, and the first vertical plate 11a and the second vertical plate 11b form a supporting lattice body. The length of each vertical lattice type prefabricated assembling segment is 3-6 m.
The utility model discloses a high-speed railway base includes rigid pile foundation 3 and installs the prefabricated segment of assembling of a plurality of above-mentioned vertical lattice formulas on rigid pile foundation 3, and the segment of assembling of two adjacent vertical lattice formulas is inlayed through tenon and recess on the terminal surface and is in the same place, and each vertical lattice formula is prefabricated the segment of assembling through alternating prestress anchor cable anchor in the prestress hole way 9, the part formation that the both sides of roof 1a surpass bottom plate 1c is encorbelmented shoulder 2.
The internal cavities of the vertical lattice type prefabricated assembly segments are filled or partially filled with fillers so as to enhance the overall stability of the roadbed structure. Be provided with safety fence 6, cable duct and contact net stand on the shoulder 2 of encorbelmenting contact net stand department is provided with the slant stiffening rib.
The utility model discloses in, the prefabricated segment of assembling of vertical lattice formula can adopt prefabricated assembling and cast-in-place two kinds of mode construction, and during the prefabricated construction of assembling, the prefabricated segment of line direction along the line, integral hoisting, 3 ~ 6m of single section length, during cast-in-place mode construction, interior bearing structure adopts integral inner formword to support, and the roof adopts the coincide template to pour and takes shape, and the line direction segmental pouring along the line.
The utility model discloses a high-speed railway road bed's work progress as follows:
when the cast-in-place construction method is adopted, the vertical lattice type prefabricated assembly segments are cast in sections according to the requirement of the distance between the settlement joints, and the length of a single section is generally not more than 10 m. In the cast-in-place process, firstly, reinforcing treatment is carried out on the foundation in the section range of the high-speed railway foundation, and a rigid pile foundation 3 is formed in a rigid pile composite foundation structure form; secondly, erecting a template and binding reinforcing steel bars on the reinforced rigid pile foundation 3, and pouring the prefabricated assembly segment bottom plate 1 c; then, binding vertical support plate steel bars in the side wall plate 1b and the inner support structure 1d, forming a node corner plastering 4 structure according to design requirements, arranging an inner formwork of the inner support structure 1d and an outer formwork of the side wall plate 1b, and pouring concrete to the bottom position of the top plate 1 a; then, maintaining the concrete of the side wall plates 1b and the inner support structure 1d to 50% of the design strength, removing the inner support template provided with the inner support structure 1d, erecting an outer template of the cantilever road shoulder 2 in the pouring process of the top plate 1a of the prefabricated assembly section, laying a superposed template on the top of the cavity of the prefabricated assembly section 1, and forming an integral superposed plate structure with the top plate 1a poured later; and finally, carrying out concrete pouring and curing on the top plate 1a and the overhanging road shoulder 2, wherein the grade of the concrete is not less than C40, and the curing age is not less than 100% of the design strength. In addition, full filling, half filling and no roadbed filling can be adopted in the prefabricated assembly sections according to design requirements, so that the overall stability of the roadbed is enhanced; after the foundation bed construction is completed, the track base plate 5 construction is carried out, the track plate and the steel rail are laid after the strength requirement is met, and the protective fence 6 is arranged at the edge of the overhanging road shoulder 2.
When the prefabricated assembly mode is adopted for construction, the construction is performed in sections along the road base road direction, the length of a single vertical lattice type prefabricated assembly section is not more than 6m, holes can be formed in two vertical supporting plates in the supporting structure 1d according to design requirements, tenon-groove embedding structures are additionally arranged at the joint positions of the sections of the vertical supporting plates, the side wall plates 1b and the bottom plate 1c, and the weight of the single section is controlled to be not more than 200 t. After the prefabrication of the vertical lattice type prefabricated assembly sections is completed, the maintenance age is not less than 85% of the design strength, and the on-site assembly is carried out. Firstly, reinforcing the foundation in the section range of the high-speed railway foundation, and forming a rigid pile foundation 3 in a rigid pile composite foundation structure form; secondly, hoisting the vertical lattice prefabricated assembly segments to a preset position, and fixedly connecting a box-type structure bottom plate 1c and a rigid pile foundation 3 in a post-pouring mode; then, other sections are hoisted continuously, and the tenon-groove embedding structures 7 at the joint positions of the adjacent sections are ensured to be mutually occluded; then, inserting a prestressed anchor cable in a prestressed duct 9 in the reserved anchoring groove 8, wherein the inserting operation of the prestressed anchor cable is performed simultaneously with the positioning and hoisting of the prefabricated sections, so that the adjacent prefabricated sections are ensured to be anchored and embedded with each other; and finally, repeating the process until the high-speed rail roadbed is integrally molded and reaches the designed length. In addition, full filling, half filling and no roadbed filling can be adopted in the box-type structure after the prefabrication and assembly are finished according to design requirements, so that the overall stability of the box-type structure roadbed structure is enhanced; and after the roadbed foundation construction is finished, constructing a track base plate 5, and paving a track plate and a steel rail after the strength requirement is met. And then, completing the on-site assembly construction of the high-speed rail roadbed.
The above detailed description of the embodiments of the present invention is only for the preferred embodiments of the present invention, and the present invention should not be considered as limiting the scope of the present invention. All equivalent changes, modifications and the like made in accordance with the scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims (9)
1. The utility model provides a section of festival is assembled in prefabrication of vertical lattice formula which characterized in that: comprises a top plate (1a), a bottom plate (1c), an inner supporting structure (1d) and two side wall plates (1b) which are integrally formed, wherein the two side wall plates (1b) are vertically arranged, the top plate (1a) and the bottom plate (1c) are horizontally arranged,
the left side and the right side of the bottom plate (1c) are connected with the bottom edges of the two side wall plates (1 b);
the width of the top plate (1a) is larger than that of the bottom plate (1c), and the top edges of the two side wall plates (1b) are connected with the bottom surface of the top plate (1 a);
the horizontal section of the inner support structure (1d) is in a cross shape and is formed by mutually and vertically crossing a first vertical plate (11a) and a second vertical plate (11b) which are vertically arranged; the left end and the right end of the first vertical plate are respectively connected with the middle parts of the two side wall plates (1b), and the upper end and the lower end of the first vertical plate are respectively connected with the middle parts of the top plate (1a) and the bottom plate (1 c); the upper end and the lower end of the second vertical plate are respectively connected with the middle parts of the top plate (1a) and the bottom plate (1 c);
reinforcing structures are formed at the joints of the inner support structure (1d) and the top plate (1a), the bottom plate (1c) and the two side wall plates (1b) and the joints of the two vertical plates, anchoring grooves (8) are formed at the positions of each connecting node on the front end surface and the rear end surface of the vertical lattice type prefabricated assembly segment, and prestressed pore channels (9) which run through along the length direction of the vertical lattice type prefabricated assembly segment are arranged in the anchoring grooves (8);
tenons (7a) are formed on the front end faces of the two side wall plates (1b) and the second vertical plate (11b), grooves (7b) are formed in corresponding positions of the corresponding rear end faces, and the tenons and the grooves are matched in shape.
2. The vertically lattice prefabricated construction section according to claim 1, wherein: the reinforcing structure is a fillet (4) formed on two sides of the connecting position, and the fillet extends along the whole length direction.
3. The vertically lattice prefabricated construction section according to claim 1, wherein: the tenon and the groove are respectively formed in the middle of the front end face and the rear end face of the two side wall plates (1b) and the second vertical plate (11 b).
4. The vertically lattice prefabricated construction section according to claim 1, wherein: through holes (10) are formed in the first vertical plate (11a) and the second vertical plate (11b), and the first vertical plate (11a) and the second vertical plate (11b) form a supporting lattice body.
5. The vertically lattice precast segment of any one of claims 1-4, wherein: the length of each vertical lattice type prefabricated assembling segment is 3-6 m.
6. A high-speed railway road bed which is characterized in that: the vertical lattice type prefabricated assembly sections are installed on the rigid pile foundation (3), two adjacent vertical lattice type prefabricated assembly sections are embedded together through tenons and grooves on the end faces, each vertical lattice type prefabricated assembly section is anchored through a prestressed anchor cable inserted into the prestressed pore channel (9), and overhanging road shoulders (2) are formed by parts, exceeding the bottom plate (1c), of the two sides of the top plate (1 a).
7. The high-speed rail subgrade according to claim 6, wherein: the internal cavities of the vertical lattice type prefabricated assembly segments are filled or partially filled with fillers so as to enhance the overall stability of the roadbed structure.
8. The high-speed railway subgrade according to claim 7, characterized in that: a protective fence (6), a cable trough and a contact net upright post are arranged on the overhanging road shoulder (2).
9. The high-speed rail subgrade according to claim 8, wherein: and oblique reinforcing ribs are arranged at the contact net upright posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467733.4U CN210481900U (en) | 2019-04-09 | 2019-04-09 | Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467733.4U CN210481900U (en) | 2019-04-09 | 2019-04-09 | Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same |
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| CN210481900U true CN210481900U (en) | 2020-05-08 |
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| CN201920467733.4U Active CN210481900U (en) | 2019-04-09 | 2019-04-09 | Vertical lattice type prefabricated assembly segment and high-speed railway foundation assembled by same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080044A (en) * | 2019-04-09 | 2019-08-02 | 中国铁路设计集团有限公司 | A kind of vertical lattice type prefabricated assembled segment and its assembled high-speed rail roadbed |
| CN111622265A (en) * | 2020-06-10 | 2020-09-04 | 北京市市政工程设计研究总院有限公司 | Underground combined structure of tenon connection assembled upper-lower layer multi-layer large-scale prefabricated part |
-
2019
- 2019-04-09 CN CN201920467733.4U patent/CN210481900U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080044A (en) * | 2019-04-09 | 2019-08-02 | 中国铁路设计集团有限公司 | A kind of vertical lattice type prefabricated assembled segment and its assembled high-speed rail roadbed |
| CN111622265A (en) * | 2020-06-10 | 2020-09-04 | 北京市市政工程设计研究总院有限公司 | Underground combined structure of tenon connection assembled upper-lower layer multi-layer large-scale prefabricated part |
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