CN212316937U - Composite steel plate wall semi-rigid cantilever foundation pit supporting system - Google Patents
Composite steel plate wall semi-rigid cantilever foundation pit supporting system Download PDFInfo
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- CN212316937U CN212316937U CN202020452314.6U CN202020452314U CN212316937U CN 212316937 U CN212316937 U CN 212316937U CN 202020452314 U CN202020452314 U CN 202020452314U CN 212316937 U CN212316937 U CN 212316937U
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- shaped steel
- steel sheet
- seat
- back row
- row
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009412 basement excavation Methods 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a construction technical field especially relates to a composite steel plate wall semi-rigid cantilever underground structure system, including a plurality of front-seat U-shaped steel sheets, a plurality of back row U-shaped steel sheets and stagnant water curtain, the structure of front-seat U-shaped steel sheet and back row U-shaped steel sheet is the same, and a plurality of front-seat U-shaped steel sheets are in the same place of lock each other, and a plurality of back row U-shaped steel sheets are in the same place of lock each other, the stagnant water curtain is located between front-seat U-shaped steel sheet and the back row U-shaped steel sheet, is equipped with the cement reinforcing section that spouts soon at the biggest position of moment of bending of front-seat U-shaped steel sheet and back row U-shaped steel sheet, and the interpolation has the shear force. The utility model discloses well twice soil retaining structure and stake inter-dowel bar cement combined action reduce cantilever supporting structure's horizontal displacement by a wide margin to can cancel horizontal bearing structure in the hole completely.
Description
Technical Field
The utility model relates to a construction technical field especially relates to a composite steel plate wall semi-rigid cantilever excavation supporting system.
Background
At present, a deep foundation pit project in a soft soil area generally adopts a row pile and horizontal inner support structure, the pile forming construction period is long, and the inner support is not beneficial to earth excavation and basement structure construction. And the side wall leakage caused by soil loss among piles and failure of the waterproof curtain not only hinders construction, but also has great harm and is a main cause of foundation pit collapse accidents.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned technique, and provide a composite steel plate wall semi-rigid cantilever excavation supporting system.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a compound steel sheet wall semi-rigid cantilever excavation supporting system which characterized in that: including a plurality of front-seat U-shaped steel sheets, a plurality of back row U-shaped steel sheets and stagnant water curtain, the structure of front-seat U-shaped steel sheet and back row U-shaped steel sheet is the same, and a plurality of front-seat U-shaped steel sheets are in the same place in the lock joint each other, and a plurality of back row U-shaped steel sheets are in the lock joint each other, stagnant water curtain is located between front-seat U-shaped steel sheet and the back row U-shaped steel sheet, is equipped with the cement of spouting soon at the maximum position of moment of front-seat U-shaped steel sheet and back row U-shaped steel sheet and consolidates the section, and the interpolation has the shear force to.
Preferably, two sides of the front row of U-shaped steel plates and two sides of the rear row of U-shaped steel plates are respectively provided with a U-shaped groove, and the U-shaped grooves on the two adjacent steel plates are buckled with each other to form a whole.
Preferably, a reinforced concrete slab is arranged on the tops of the front row of U-shaped steel plates, the rear row of U-shaped steel plates and the waterproof curtain.
The beneficial effects of the utility model are that compound steel plate wall cantilever underground structure supporting system adopts two rows of inside and outside U-shaped steel sheets, and the centre is cement soil water-stop curtain to design the cement that spouts soon at the biggest position of moment of flexure and reinforce the section, interpolation shear force power reinforcing bar, it is independent each other to have solved the row's support around, the bearing capacity can not effectively superimposed problem, it is whole that the steel sheet pile that makes originally be flexible forms a rigidity, bar-inserted cement soil combined action between twice retaining structure and stake reduces cantilever supporting structure's horizontal displacement by a wide margin, thereby can cancel the horizontal bearing structure in the hole completely. Underground structure completion retaining pile can all be retrieved, material-saving green.
Drawings
Fig. 1 is a side view of the present invention;
fig. 2 is a plan view of the present invention.
Detailed Description
Spatially relative terms such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe the spatial relationship of one feature or characteristic to another feature or characteristic as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 and 2, a composite steel plate wall semi-rigid cantilever foundation pit supporting system comprises a plurality of front row U-shaped steel plates 1, a plurality of rear row U-shaped steel plates 2 and a waterproof curtain 3, wherein the front row U-shaped steel plates and the rear row U-shaped steel plates are identical in structure, the front row U-shaped steel plates are buckled with each other, the rear row U-shaped steel plates are buckled with each other, the waterproof curtain is positioned between the front row U-shaped steel plates and the rear row U-shaped steel plates, a rotary spraying cement reinforcing section 4 is arranged at the maximum bending moment position of the front row U-shaped steel plates and the rear row U-shaped steel plates, and a shear force transmission reinforcing steel bar 5 is inserted in the rotary spraying cement reinforcing section. The U-shaped grooves 6 are respectively arranged on two sides of the front row of U-shaped steel plates and the rear row of U-shaped steel plates, and the U-shaped grooves on the two adjacent steel plates are buckled with each other to form a whole. And reinforced concrete slabs 7 are arranged at the tops of the front row of U-shaped steel plates, the rear row of U-shaped steel plates and the waterproof curtain.
Composite steel plate wall cantilever excavation supporting system adopts two inside and outside rows of U-shaped steel sheets, and the centre is soil cement stagnant water curtain to design the cement that spouts soon at the biggest position of moment of flexure and reinforce the section, interpolation shear force biography power reinforcing bar, it is independent each other to have solved the row of back and forth and strut, the bearing capacity can not effectively superimposed problem, it is whole to make the steel sheet pile that originally is flexible form a rigidity, dowel soil combined action between twice retaining structure and stake, reduce cantilever supporting structure's horizontal displacement by a wide margin, thereby can cancel the horizontal bearing structure in the hole completely. Underground structure completion retaining pile can all be retrieved, material-saving green.
Through calculation in various forms, the total bending moment of the supporting structure is the minimum, the stress of the piles in the front row and the rear row is the most uniform, through comparative analysis and calculation, the total bending moment of the supporting structure is reduced by 55%, the stress difference of the piles in the two rows is only 24% at the maximum, and the horizontal displacement of the top is the minimum.
Compared with the traditional cast-in-place piling system, the U-shaped piles are of continuous structures and have water retaining functions, and the pit wall forms three independent water stop systems by adding one cement soil, so that the possibility of soil loss among piles and foundation pit leakage is almost eliminated. The steel sheet pile construction speed in the soft soil area is extremely high, maintenance is not needed, an inner support is not needed, a foundation pit is completely excavated in an open mode, the construction period can be saved by more than 60%, economic benefits are obvious, and the steel sheet pile construction method is very suitable for earth excavation operation in the soft soil area with the depth range of 6-10 m.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The utility model provides a compound steel sheet wall semi-rigid cantilever excavation supporting system which characterized in that: including a plurality of front-seat U-shaped steel sheets, a plurality of back row U-shaped steel sheets and stagnant water curtain, the structure of front-seat U-shaped steel sheet and back row U-shaped steel sheet is the same, and a plurality of front-seat U-shaped steel sheets are in the same place in the lock joint each other, and a plurality of back row U-shaped steel sheets are in the lock joint each other, stagnant water curtain is located between front-seat U-shaped steel sheet and the back row U-shaped steel sheet, is equipped with the cement of spouting soon at the maximum position of moment of front-seat U-shaped steel sheet and back row U-shaped steel sheet and consolidates the section, and the interpolation has the shear force to.
2. The composite steel plate wall semi-rigid cantilever foundation pit supporting system of claim 1, wherein: the U-shaped grooves are formed in the two sides of the front row of U-shaped steel plates and the two sides of the rear row of U-shaped steel plates respectively, and the U-shaped grooves in the two adjacent steel plates are buckled with each other to form a whole.
3. The composite steel plate wall semi-rigid cantilever foundation pit supporting system of claim 1, wherein: and reinforced concrete slabs are arranged at the tops of the front row of U-shaped steel plates, the rear row of U-shaped steel plates and the waterproof curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020452314.6U CN212316937U (en) | 2020-04-01 | 2020-04-01 | Composite steel plate wall semi-rigid cantilever foundation pit supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020452314.6U CN212316937U (en) | 2020-04-01 | 2020-04-01 | Composite steel plate wall semi-rigid cantilever foundation pit supporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212316937U true CN212316937U (en) | 2021-01-08 |
Family
ID=74020645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020452314.6U Expired - Fee Related CN212316937U (en) | 2020-04-01 | 2020-04-01 | Composite steel plate wall semi-rigid cantilever foundation pit supporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212316937U (en) |
-
2020
- 2020-04-01 CN CN202020452314.6U patent/CN212316937U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |