CN214657078U - Foundation pit supporting water stopping device - Google Patents
Foundation pit supporting water stopping device Download PDFInfo
- Publication number
- CN214657078U CN214657078U CN202120453742.5U CN202120453742U CN214657078U CN 214657078 U CN214657078 U CN 214657078U CN 202120453742 U CN202120453742 U CN 202120453742U CN 214657078 U CN214657078 U CN 214657078U
- Authority
- CN
- China
- Prior art keywords
- self
- foundation pit
- anchor rod
- steel sleeve
- stopping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
A foundation pit supporting water stopping device comprises a water stopping device; a self-advancing anchor rod; the self-propelled anchor rod is characterized in that a steel sleeve is arranged on the periphery of the self-propelled anchor rod and is divided into an upper part and a lower part, a separation circular plate is arranged between the upper part and the lower part of the steel sleeve, a first filler is filled in the upper part of the steel sleeve, and a second filler is arranged on the lower part of the steel sleeve.
Description
Technical Field
The utility model belongs to the technical field of the building, a excavation supporting stagnant water construction method and stagnant water device thereof is related to.
Background
In the construction of foundation pit supporting engineering, for the conditions that the stratum water level is high and pile-anchor supporting is adopted, a water interception curtain is firstly arranged to prevent underground water from entering a foundation pit, then pile arrangement construction is carried out, then a dewatering well reduces the water level in the foundation pit, earthwork excavation is carried out after the requirement is met, and an anchor rod is constructed at a corresponding design position. The conditions of higher water level outside a foundation pit and higher water pressure occur in construction, a self-advancing anchor rod is generally adopted, and the anchor rod passes through a water interception curtain in construction to achieve the anchoring effect when the sufficient anchoring length is reached. Under this condition, the outer water of foundation ditch, muddy sand can flow along the body of rod of stock, has more increaseed the outer water pressure of foundation ditch during the stock slip casting, gushes out the mixture of a large amount of water, muddy sand, thick liquid etc. along the stock body of rod, causes the hole wall to enlarge around the stock body of rod, can not play the anchor effect, stably causes the threat to the foundation ditch lateral wall, if can not in time shutoff, causes a large amount of water, muddy sand to run off, causes the settlement of building or structure around even.
Aiming at the technical problem, the characteristics of the construction of the self-advancing anchor rod and the blocking method of water and sand gushing are combined, a steel sleeve for stopping sand is implemented, the phenomena of water gushing and sand gushing during the drilling and grouting of the self-advancing anchor rod are avoided, meanwhile, the diameter of the increased steel sleeve is larger and is connected with the original anchor rod into a whole, the contact area with the soil body is increased, namely, the frictional resistance is increased, and the bearing capacity of the anchor rod is improved; the designed bearing tray and the separation circular plate can effectively prevent end leakage, accelerate anchor rod construction, play the anchoring effect as early as possible and ensure the stability of the side wall of the foundation pit.
Disclosure of Invention
The utility model aims at providing a retaining device is strutted to foundation ditch to solve the problem that exists among the prior art.
A foundation pit supporting water stopping device comprises a water stopping device; a self-advancing anchor rod;
the self-propelled anchor rod is characterized in that a steel sleeve is arranged on the periphery of the self-propelled anchor rod and is divided into an upper part and a lower part, a separation circular plate is arranged between the upper part and the lower part of the steel sleeve, a first filler is filled in the upper part of the steel sleeve, and a second filler is arranged on the lower part of the steel sleeve.
Preferably, the separation circular plate is provided with a self-advancing anchor rod penetration hole and an exhaust hose penetration hole.
Preferably, the exhaust hose penetrates through the exhaust hose through hole, the lower end of the exhaust hose is arranged in the side wall of the foundation pit, and the upper end of the exhaust hose is arranged outside the side wall of the foundation pit.
Preferably, the material of the exhaust hose is a PVC hose.
Preferably, the lower end of the steel sleeve is made into a sawtooth structure.
Preferably, a water stop ring, a pressure bearing tray and a nut are sequentially arranged on the upper part of the steel sleeve.
Preferably, the self-advancing anchor rod through hole on the pressure-bearing tray is 4-5mm larger than the diameter of the self-advancing anchor rod.
Preferably, the self-advancing bolt hole in the separation circular plate is 4-5mm larger than the diameter of the self-advancing bolt.
Preferably, the pressure-bearing tray is provided with an exhaust hose perforation.
Preferably, the first filler is watertight and dry cement, and the mixture ratio is 1: 1.
Preferably, the second filler is pebble and medium coarse sand, and a filter screen is arranged in the lower part of the steel sleeve.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic view of the structure of a water-stopping sand-stopping steel sleeve of the utility model;
FIG. 2 is a schematic view of the structure of a separating circular plate;
FIG. 3 is a schematic structural view of a pressure-bearing tray;
FIG. 4 is a plan view of a water-stop sand-blocking steel sleeve and a self-advancing anchor rod construction;
FIG. 5 is a sectional view of the construction of a water-stop sand-blocking steel sleeve and a self-advancing anchor rod;
fig. 6 is a plan view of the installation of the wale and the construction of the anchorage.
Wherein: 1. a self-advancing anchor rod; 2. a nut; 3. a pressure-bearing tray; 4. a water stop ring expanding when encountering water; 5. steel casing; 6. an exhaust hose; 7. filling material I; 8. a separation disc; 81. perforating the self-advancing anchor rod; 82. perforating an exhaust hose; 9. a filter screen; 10. a second filler; 11. a rubber gasket; 12. pile arrangement; 13. intercepting a water curtain; 14. side walls of the foundation pit and 15 waist beams; 16. a water stopping device.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Please refer to fig. 1 to 6. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
The utility model aims at providing a retaining device is strutted to foundation ditch to solve the problem that exists among the prior art.
A foundation pit supporting water stopping device comprises a water stopping device; a self-advancing anchor rod;
the self-propelled anchor rod is characterized in that a steel sleeve is arranged on the periphery of the self-propelled anchor rod and is divided into an upper part and a lower part, a separation circular plate is arranged between the upper part and the lower part of the steel sleeve, a first filler is filled in the upper part of the steel sleeve, and a second filler is arranged on the lower part of the steel sleeve.
Preferably, the separation circular plate is provided with a self-advancing anchor rod penetration hole and an exhaust hose penetration hole.
Preferably, the exhaust hose penetrates through the exhaust hose through hole, the lower end of the exhaust hose is arranged in the side wall of the foundation pit, and the upper end of the exhaust hose is arranged outside the side wall of the foundation pit.
Preferably, the material of the exhaust hose is a PVC hose.
Preferably, the lower end of the steel sleeve is made into a sawtooth structure.
Preferably, a water stop ring, a pressure bearing tray and a nut are sequentially arranged on the upper part of the steel sleeve.
Preferably, the self-advancing anchor rod through hole on the pressure-bearing tray is 4-5mm larger than the diameter of the self-advancing anchor rod.
Preferably, the self-advancing bolt hole in the separation circular plate is 4-5mm larger than the diameter of the self-advancing bolt.
Preferably, the pressure-bearing tray is provided with an exhaust hose perforation.
Preferably, the first filler is watertight and dry cement, and the mixture ratio is 1: 1.
Preferably, the second filler is pebble and medium coarse sand, and a filter screen is arranged in the lower part of the steel sleeve.
A foundation pit support water stop construction method comprises the following steps:
a, manufacturing a steel sleeve: preparing a steel sleeve, wherein the diameter of the steel sleeve is 80cm, the length of the steel sleeve is 1.5-1.6 m, and the wall thickness of the steel sleeve is 3 mm; meanwhile, the lower end of the steel sleeve is arranged to be zigzag, so that drilling is facilitated;
b, cutting the steel sleeve: the steel sleeve is divided into an upper part and a lower part by a separation circular plate for standby;
c, filling the filler into the upper part: filling the upper part of the divided steel sleeve with a filler which is water-tight and dry cement; the mixture is uniformly mixed according to the ratio of 1: 1 and then is filled into the steel sleeve, water is not leaked, and dry cement can be rapidly solidified when encountering water reserved along the self-advancing anchor rod body to prevent the water from flowing out;
d, filling a second filler into the lower part: the lower part of the divided steel sleeve is filled with stones, medium coarse sand and a filter screen, so that the effect of filtering mud and sand in water can be achieved, the loss of mud and sand outside the foundation pit is prevented, and the stability of a soil body on the side wall of the foundation pit is ensured;
e, assembling: a self-advancing anchor rod is inserted into the steel sleeve, and a water stop ring, a pressure bearing tray and a nut are sequentially arranged on the steel sleeve;
wherein:
the diameter of a self-advancing anchor rod perforation on the pressure-bearing tray is 4-5mm larger than that of a self-advancing anchor rod, and the specification of the pressure-bearing tray is 30cm multiplied by 3 mm;
the diameter of the self-advancing anchor rod through hole on the separation circular plate is 4-5mm larger than that of the self-advancing anchor rod;
exhaust hose perforations with the diameter of 18mm are reserved on the separation circular plate and the pressure-bearing tray;
f, installing an exhaust hose: the exhaust hose is arranged inside the steel sleeve, the lower end of the exhaust hose is arranged in the side wall of the foundation pit, and the upper end of the exhaust hose is arranged outside the side wall of the foundation pit, so that the exhaust function during grouting is realized, the pressure generated by grouting is reduced, and the grouting quality is ensured;
wherein the exhaust hose is made of a PVC hose, the diameter of the exhaust hose is 16mm, and the wall thickness of the exhaust hose is 3 mm;
g, placing a water stopping device: the water stopping device is positioned between the piles, the water-saving curtain is inserted into the serrated end of the steel sleeve in the direction, and the pressure-bearing tray is tightly attached to the side wall of the foundation pit and locked by a nut;
h, grouting: after grouting is finished, the time interval of the specification and the design requirement is reached, and after the grout is solidified, the nut, the bearing tray and the water-swelling water stop ring are detached. The disassembled nut, the pressure-bearing tray and the water-swelling water-stopping ring can be used for construction of other self-advancing anchor rods, and recycling of the nut, the pressure-bearing tray and the water-swelling water-stopping ring is achieved.
The foundation pit support is a pile-anchor support, the anchor rod is a self-advancing anchor rod 1, a water interception curtain 13 is constructed on the periphery of the foundation pit, then row piles 14 are constructed, earth excavation is carried out after the precipitation of the foundation pit meets the requirement, and the self-advancing anchor rod 1 is constructed after the excavation is carried out to the position which is 0.5m below the design elevation of each self-advancing anchor rod 1.
As shown in figure 1, when the self-advancing anchor rod 1 is constructed to the last section, a steel sleeve 5 is arranged at the front end of the self-advancing anchor rod 1, the length of the steel sleeve 5 is 1.5m, the diameter is 80cm, and the wall thickness is 3 mm. Firstly, a separation circular plate 8 is arranged at the bottom of a steel sleeve 5, the separation circular plate 8 is 4cm away from the lower port of the steel sleeve 5, and a rubber gasket 11 is arranged at the outer edge of the separation circular plate 8, can be in close contact with the inner wall of the steel sleeve 5 and is fixed at the lower port of the steel sleeve 5. At this time, the exhaust hose 6 is installed through the reserved exhaust hose hole 82 on the partition round plate 8, the length of the exhaust hose 6 is 1.9m, the lower port of the exhaust hose 6 is wrapped by a filter screen and bound by a thin iron wire, and as shown in fig. 2, the partition round plate is provided with a self-drilling anchor rod through hole 81 and an exhaust hose through hole 82. Next, the steel sleeve 5 is inserted into the self-advancing bolt 1 through the self-advancing bolt penetration hole 81 of the built-in partition circular plate 8 at the upper end of the self-advancing bolt 1, leaving the upper end 22cm of the self-advancing bolt 1. And filling the uniformly mixed stones and the medium coarse sand 10 into the steel sleeve 5, filling 1/4 with the height of the steel sleeve 5, and then plugging the filter screen 9 with the height of 1/4 of the steel sleeve 5. At this time, a separation circular plate 8 is installed into the steel sleeve 5 through the self-advancing anchor rod 1 and the upper end of the exhaust hose 6, the installation height is 1/2 of the height of the steel sleeve 5, and then the watertight and dry cement 7 which is uniformly mixed is filled in, and the filling height is 1/2 of the height of the steel sleeve 5.
After the steel sleeve 5 is installed, the self-propelled anchor rod 1 is connected with an anchor rod drilling machine to start drilling into the anchor rod. As shown in fig. 4 and 5, the self-propelled anchor rods 1 and the steel sleeves 5 are drilled into the side wall 14 of the foundation pit, the upper end of the steel sleeves 5 is exposed out of the side wall 14 of the foundation pit by 45cm, and the lower end is drilled into the water interception curtain 13. After the self-propelled anchor rod 1 and the connected steel sleeve 5 reach the requirement by drilling, the upper end of the pipe-penetrating self-propelled anchor rod 1 is provided with the water-swelling water stop ring 4 and the pressure-bearing tray 3, the exhaust hose is exposed outside the foundation pit side wall 14 through the exhaust hose through hole 82 reserved on the pressure-bearing tray 3 at the moment, as shown in fig. 3, the pressure-bearing tray 3 is provided with the self-drilled anchor rod through hole 81 and the exhaust hose 82, then the nut 2 is installed, the nut 2 is screwed down to enable the pressure-bearing tray 3 to have prestress, so that the pressure-bearing tray 3 is close to the foundation pit side wall 14, and soil around the drilled hole of the self-propelled anchor rod 1 is fastened.
After the installation is completed, the self-drilling anchor rod 1 is grouted, after the grouting is completed, the time interval of the specification and the design requirement is reached, and after the grout is solidified, the nut 2, the pressure-bearing tray 3 and the water-swelling water stop ring 4 are detached. The disassembled nut 2, the pressure-bearing tray 3 and the water swelling water stop ring 4 can be used for the construction of other self-advancing anchor rods 1. After the construction quantity of the self-advancing anchor rods 1 reaches the quantity of the waist beams 15, the waist beams 15 are installed according to the drawing requirements, then the anchorage devices 16 are installed, and the self-drilling anchor rods 1 are tensioned to form prestress.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A foundation pit supporting and water stopping device is characterized by comprising a water stopping device; a self-advancing anchor rod;
the self-propelled anchor rod is characterized in that a steel sleeve is arranged on the periphery of the self-propelled anchor rod and is divided into an upper part and a lower part, a separation circular plate is arranged between the upper part and the lower part of the steel sleeve, a first filler is filled in the upper part of the steel sleeve, and a second filler is arranged on the lower part of the steel sleeve.
2. The foundation pit support water stopping device according to claim 1, wherein the partition circular plate is provided with a self-advancing anchor rod perforation and an exhaust hose perforation.
3. The foundation pit support water stopping device according to claim 2, wherein the exhaust hose penetrates through the exhaust hose through hole, the lower end of the exhaust hose is arranged in the side wall of the foundation pit, and the upper end of the exhaust hose is arranged outside the side wall of the foundation pit.
4. The foundation pit support water stopping device according to claim 2, wherein the exhaust hose is made of a PVC hose.
5. The foundation pit support water stopping device according to claim 1, wherein the lower end of the steel sleeve is made into a sawtooth structure.
6. The foundation pit support water stopping device according to claim 1, wherein a water stopping ring, a pressure bearing tray and a nut are sequentially arranged on the upper part of the steel sleeve.
7. The foundation pit support water stopping device according to claim 6, wherein the self-advancing anchor rod perforation on the pressure bearing tray is 4-5mm larger than the self-advancing anchor rod diameter.
8. The foundation pit support water stopping device according to claim 1, wherein the self-advancing anchor rod perforation on the partition circular plate is 4-5mm larger than the self-advancing anchor rod diameter.
9. The foundation pit support water stopping device according to claim 6, wherein an exhaust hose perforation is left on the pressure bearing tray.
10. The foundation pit support water-stopping device according to claim 1, wherein the second filler is stone or medium coarse sand, and a filter screen is arranged in the lower part of the steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120453742.5U CN214657078U (en) | 2021-03-03 | 2021-03-03 | Foundation pit supporting water stopping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120453742.5U CN214657078U (en) | 2021-03-03 | 2021-03-03 | Foundation pit supporting water stopping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214657078U true CN214657078U (en) | 2021-11-09 |
Family
ID=78450444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120453742.5U Active CN214657078U (en) | 2021-03-03 | 2021-03-03 | Foundation pit supporting water stopping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214657078U (en) |
-
2021
- 2021-03-03 CN CN202120453742.5U patent/CN214657078U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10550537B2 (en) | Self-drainage anchor cable system for slope protection and construction method thereof | |
| CN110016922A (en) | A new type of integral drainage anti-sliding pile structure and its construction method | |
| CN112144584A (en) | Self-flowing drainage pressure-limiting anti-floating structure and construction method | |
| CN106703044A (en) | Flow-plastic-shaped flushing and filling soil weak stratum sloping combination support method | |
| CN114575921A (en) | Drainage anchor rod, slope drainage system and slope drainage treatment method for tunnel under slope | |
| CN115637716B (en) | Plant slope protection structure for treating high inclined slope and construction method thereof | |
| CN107245989A (en) | Bear the tunnel structure and its construction technology of external water pressure in height | |
| KR20060100315A (en) | Upstream Retaining Wall Type Dam | |
| CN214657078U (en) | Foundation pit supporting water stopping device | |
| CN214657275U (en) | Self-flowing drainage pressure-limiting anti-floating structure | |
| CN214245855U (en) | Water-proof pressure-control anti-floating structure | |
| CN112252348A (en) | Design and construction method of U-shaped grouting waterproof layer structure based on foundation pit | |
| CN112195980A (en) | Water-resisting pressure-controlling anti-floating structure and construction method | |
| CN112761167A (en) | Foundation pit support water-stopping construction method and water-stopping device thereof | |
| CN111379267A (en) | A water blocking method for solving water gushing at the bottom of foundation pit | |
| CN212612502U (en) | Waterproof retaining structure for foundation pit | |
| CN111424695A (en) | Seepage-proofing and leakage-stopping method for deep-buried karst pipeline | |
| CN111058469A (en) | Impervious wall structure and ecological seepage-control solid bed system | |
| CN117166494A (en) | Landslide control device and method | |
| CN212742561U (en) | Foundation pit supporting structure convenient to modularization installation | |
| CN214363565U (en) | A drainage structures and pipeline network fall fast in foundation ditch bottom for suspension type curtain | |
| CN211948471U (en) | Steel pipe inclined pile support for foundation pit support | |
| CN212104113U (en) | Anchor pile and soil nail wall combined retaining structure | |
| CN108487301A (en) | Fractured Rock Slope original position Gravity Retaining Wall structure | |
| CN110258584B (en) | Foundation pit side slope soil nailing pipe wall enclosure structure and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 253000 Dejian building, East Sanba Road, Dezhou Economic Development Zone, Shandong Province Patentee after: Shandong Expressway Dejian Group Co.,Ltd. Address before: 253000 Dejian building, East Sanba Road, Dezhou Economic Development Zone, Shandong Province Patentee before: SHANDONG DEJIAN GROUP Co.,Ltd. |