CN110685287A - Double-row pile foundation pit supporting system with drainage ditch and retaining wall and construction method - Google Patents
Double-row pile foundation pit supporting system with drainage ditch and retaining wall and construction method Download PDFInfo
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- CN110685287A CN110685287A CN201911068500.8A CN201911068500A CN110685287A CN 110685287 A CN110685287 A CN 110685287A CN 201911068500 A CN201911068500 A CN 201911068500A CN 110685287 A CN110685287 A CN 110685287A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0275—Retaining or protecting walls characterised by constructional features cast in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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Abstract
A double-row pile foundation pit supporting system with a drainage ditch and a retaining wall comprises double-row piles and a crown beam, wherein the crown beam is laid at the top ends of the double-row piles, the top surface of the crown beam constructs the retaining wall, the drainage ditch is arranged between inner and outer rows of piles at the bottom surface of the crown beam, the retaining wall is a cantilever type retaining wall, an inclined strut is arranged on the inner side of the retaining wall, a vertical surface of the inclined strut is rigidly connected with the anchoring of the retaining wall, a horizontal bottom surface of the inclined strut is rigidly connected with the anchoring of the crown beam, an included angle between the vertical surface and the horizontal bottom surface of the inclined strut is 30-60 degrees, and the distance between the two inclined struts is 3; the outer side wall of the drainage ditch clings to the outer row of piles and is connected with the outer row of piles into a whole, the inner side wall clings to the inner row of piles and is connected with the inner row of piles into a whole, and an inspection well communicated with the drainage ditch is arranged between the two inclined struts on the crown beam. This strut system both can satisfy excavation supporting and can make permanent retaining wall again, and interim escape canal and permanent escape canal can be made to the escape canal: the foundation pit supporting system is safe, low in cost, enough in rigidity and good in stability. The construction method is simple and convenient and easy to popularize.
Description
Technical Field
The invention relates to a building supporting structure and a construction method, in particular to a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall and a construction method.
Background
1. The pile length of the double-row piles is increased, and the pile diameter is increased;
2. the foundation pit supporting construction amount is large, the cost is high, and the construction period is long;
3. for some narrow areas, no drainage ditch construction space is arranged beside the foundation pit, so that drainage is blocked, and the safety performance of a support system and the drainage performance of engineering are seriously influenced;
4. set up the escape canal alone and can occupy area in the construction site, be unfavorable for the rational utilization of often interior area.
Disclosure of Invention
The invention aims to provide a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall and a construction method, which aim to overcome the defects in the prior art.
In order to solve the technical problems, the invention adopts the technical scheme that:
a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall comprises double-row piles and a crown beam, wherein the double-row piles comprise inner row piles and outer row piles, the crown beam is laid at the top ends of the outer row piles and the inner row piles, the top surface of the crown beam is used for constructing the retaining wall, the top end of the retaining wall is consistent with the elevation of the ground, and the drainage ditch is arranged between the inner row piles and the outer row piles at the bottom surface of the crown beam;
the retaining wall is built on one side, close to the outer row of piles, of the top surface of the crown beam, the retaining wall is a cantilever type retaining wall, a foundation pit soil layer is arranged on the outer side of the retaining wall, inclined struts are arranged on the inner side of the retaining wall, vertical faces of the inclined struts are rigidly connected with the retaining wall in an anchoring mode, horizontal bottom faces of the inclined struts are rigidly connected with the crown beam in an anchoring mode, included angles between the vertical faces of the inclined struts and the horizontal bottom faces are 30-60 degrees, and the distance between the two inclined struts is 3-10 m;
the escape canal includes inside wall, lateral wall and bottom plate, and the lateral wall is hugged closely outer row pile and is linked together with outer row pile, and interior row pile is hugged closely to the inside wall and is linked together with interior row pile, and inside wall and lateral wall top surface height are highly unanimous with the top of interior row pile and outer row pile, cover and open on the hat roof beam of escape canal top surface have with the communicating inspection shaft in escape canal, the inspection shaft is located between two braces that are separated by.
The further technical scheme is as follows:
the inspection well is circular or square, a well wall is built on the upper portion of the well mouth, and the elevation of the top of the well wall is consistent with the elevation of the ground.
The other technical scheme is as follows:
a construction method of a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall is disclosed, and the construction method is the construction method of the double-row pile foundation pit supporting system with the drainage ditch and the retaining wall and comprises the following steps:
s1 double-row pile construction
S11, manufacturing a pile body reinforcement cage;
s12 piling: pile driving is started after the pile body steel reinforcement cage is qualified in manufacturing and acceptance, the construction of double-row piles adopts a jump driving mode, namely, the first pile is driven, one or more piles behind are skipped, the construction time of adjacent piles is prolonged, and the problem that the concrete strength of the front pile is not yet reached to the design strength and is damaged due to the influence of the construction of the adjacent piles is solved;
s13 pile body concrete pouring and tamping: because the elevation of the pile top of the double-row pile is lower than the original ground elevation, the casting elevation of concrete is controlled by a hanging hammer in the concrete pouring process so as to avoid concrete over-pouring;
s14 pile head breaking
Breaking the pile head according to the designed elevation of the pile top of the support pile;
construction of S2 drainage ditch
S21 digging the earth of the drainage ditch: according to the design elevation of the bottom of the drainage ditch, excavating soil layers between the inner and outer drainage piles to the bottom of the drainage ditch, after folding grids empirically, constructing a drainage ditch cushion layer, and then pouring a drainage ditch bottom plate;
s22 planting steel bars on the side wall of the drainage ditch: the side wall of the drainage ditch comprises an inner side wall and an outer side wall which are both double-layer bidirectional steel bars, the double-layer horizontal steel bars need to be embedded with steel bars and anchored into a support pile, namely the double-layer horizontal steel bars on the inner side wall are anchored into an inner row pile, the double-layer horizontal steel bars on the outer side wall are anchored into an outer row pile, and the length of the anchored steel bars is 150 mm;
s23 drainage ditch side wall reinforcement construction: firstly, overlapping the reinforcing steel bars on the side wall of the drainage ditch with the reinforcing steel bars which are planted with the reinforcing steel bars in the step S32, and then binding the vertical reinforcing steel bars on the side wall of the drainage ditch;
s24 mounting of side wall templates of drainage ditches: after the side wall steel bars are bound and accepted, erecting and reinforcing a side wall template according to the cross section size of the drainage ditch;
s25 concrete pouring of the side wall of the drainage ditch: in the concrete pouring process, the concrete needs to be vibrated to be compact, so that the concrete pouring forming quality is ensured;
s3 crown beam construction
S31 binding of crown beam steel bars: binding crown beam steel bars on the inner and outer rows of piles and reserving a drainage ditch inspection well;
s32, embedding the retaining wall and the diagonal bracing steel bars in advance, embedding the retaining wall and the diagonal bracing steel bars in the crown beam steel bars in advance, wherein the length of the embedded steel bars inserted into the crown beam is not less than 500 mm;
s33 supporting the crown beam template on the drainage ditch; after the acceptance of the crown beam steel bars is qualified, erecting and reinforcing a crown beam template according to the thickness size of the crown beam;
s34, pouring and tamping the crown beam concrete;
s35 taking out the supporting material and the template material of the crown beam from the inspection wellhead after the construction of the crown beam is completed;
s4 retaining wall and diagonal bracing construction
S41 binding the retaining wall and the diagonal bracing steel bars; the reinforcing steel bars of the retaining wall and the inclined strut are overlapped with the reinforcing steel bars of the retaining wall and the inclined strut which are pre-embedded in the step S42;
s42, after the steel bars are bound and accepted, erecting and reinforcing a retaining wall and an inclined strut template according to the cross section sizes of the retaining wall and the inclined strut;
s43, casting and tamping construction of the retaining wall and the diagonal bracing concrete is carried out; concrete pouring of the retaining wall and the inclined strut is carried out layer by layer in a layering mode, and the layering height is generally 300-500 mm;
s5 masonry inspection shaft well wall
Before backfilling the earthwork of the foundation pit, building a well wall of the inspection well to the ground elevation along the position of a well mouth of the inspection well by using M7.5 cement mortar and MU10 bricks, namely the height of the well wall is consistent with the ground elevation.
Due to the adoption of the technical scheme, the double-row pile foundation pit supporting system with the drainage ditch and the retaining wall and the construction method have the following beneficial effects:
1. the supporting system meets the requirements of foundation pit supporting and permanent retaining wall construction, and reduces the length and the diameter of double rows of supporting piles under the condition of ensuring the safety of the foundation pit supporting system; the cost is reduced;
2. set up the escape canal between double supporting pile simultaneously, this escape canal both can regard as the interim escape canal use in the work progress, can make permanent escape canal again:
(1) the drainage ditch is arranged between the double rows of piles, so that the gap between the double rows of piles is fully utilized, and the additional independent drainage ditch is not needed, so that the construction and dismantling cost for additionally constructing a temporary drainage ditch can be reduced, and other land areas are not needed;
(2) the inner side wall and the outer side wall of the drainage ditch are tightly attached to the side walls of the double rows of piles, the inner side wall and the inner row of piles are connected into a whole, and the outer side wall and the outer row of piles are connected into a whole, so that the rigidity and the strength of the side walls of the drainage ditch can be ensured, and resources can be saved;
3. the top beams on the top surfaces of the double rows of piles can be used as cover plates of drainage ditches, and the additional cover plates of the drainage ditches are not needed, so that not only can a large amount of cost be saved, but also the rigidity and the stability are sufficient;
4. the retaining wall at the top of the crown beam adopts a form of cantilever type retaining wall and inclined struts, and a space for reserving an inspection well in a drainage ditch can be reserved between every two inclined struts of the crown beam, so that the drainage ditch is convenient to clean and maintain, the inspection well can be ensured to be positioned in the middle of the crown beam connecting pile, and the contact effect of the crown beam is enhanced;
5. according to the supporting system, the retaining wall and the inclined strut are located above the supporting pile, the vertical surface of the inclined strut is in anchoring rigid connection with the inner side surface of the retaining wall, and the horizontal bottom surface of the inclined strut is in anchoring rigid connection with the top surface of the top beam, so that the resistance of the inclined strut can be enhanced.
The technical features of a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall and a construction method thereof according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 to 3 are schematic structural views of a double-row pile foundation pit supporting system with a drainage ditch and a retaining wall, provided by the invention:
FIG. 1 is a front view, FIG. 2 is a sectional view A-A of FIG. 1, and FIG. 3 is a top view;
FIG. 4 is an enlarged view of the portion B of FIG. 2;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a schematic view of a drainage ditch structure;
FIG. 7 is a schematic structural view of a conventional double-row pile foundation pit supporting system;
in the figure:
h-ground elevation, 1-internal row pile, 2-crown beam, 3-retaining wall, 31-retaining wall steel bar, 4-inclined strut, 41-inclined strut steel bar, 5-drainage ditch, 51-inner side wall, 52-outer side wall, 53-bottom plate, 6-inspection well, 7-external row pile, 8-middle soil layer, 9-foundation pit soil layer.
Detailed Description
Example one
A double-row pile foundation pit supporting system with a drainage ditch and a retaining wall comprises double-row piles and a crown beam 2, wherein the double-row piles comprise inner row piles 1 and outer row piles 7, the crown beam is laid at the top ends of the outer row piles 1 and the inner row piles 7, the top surface of the crown beam 2 is used for constructing the retaining wall 3, the top end of the retaining wall is consistent with the elevation of the ground, and the drainage ditch 5 is arranged between the inner row piles 1 and the outer row piles 7 on the bottom surface of the crown beam;
the retaining wall is built on one side, close to the outer row piles 7, of the top surface of the crown beam, the retaining wall is a cantilever type retaining wall, a foundation pit soil layer 9 is arranged on the outer side of the retaining wall, the inner side of the retaining wall is provided with an inclined strut 4, the vertical surface of the inclined strut is rigidly connected with the anchoring of the retaining wall, the horizontal bottom surface of the inclined strut is rigidly connected with the anchoring of the crown beam 2, the included angle between the vertical surface and the horizontal bottom surface of the inclined strut is 30-60 degrees, and the distance between the two inclined struts is 3-10 m;
escape canal 5 includes inside wall 51, lateral wall 52 and bottom plate 53, and the lateral wall hugs closely outer row of stake and links to each other with outer row of stake, and interior row of stake and link to each other with interior row of stake are hugged closely to the inside wall, and inside wall and lateral wall top surface height and interior row of stake and outer row's top height unanimous, cover and open on the hat roof beam of escape canal top surface have with 5 communicating inspection shaft 6 in escape canal, inspection shaft 6 is located between two bracing that are separated by.
The inspection well is circular or square, a well wall is built on the upper portion of the well mouth, and the elevation of the top of the well wall is consistent with the elevation of the ground.
Example two
The construction method of the double-row pile foundation pit supporting system with the drainage ditch and the retaining wall is the construction method of the double-row pile foundation pit supporting system with the drainage ditch and the retaining wall in the embodiment, and comprises the following steps of:
s1 double-row pile construction
S11, manufacturing a pile body reinforcement cage;
s12 piling: pile driving is started after the pile body steel reinforcement cage is qualified in manufacturing and acceptance, the construction of double-row piles adopts a jump driving mode, namely, the first pile is driven, one or more piles behind are skipped, the construction time of adjacent piles is prolonged, and the problem that the concrete strength of the front pile is not yet reached to the design strength and is damaged due to the influence of the construction of the adjacent piles is solved;
s13 pile body concrete pouring and tamping: because the elevation of the pile top of the double-row pile is lower than the original ground elevation, the casting elevation of concrete is controlled by a hanging hammer in the concrete pouring process so as to avoid concrete over-pouring;
s14 pile head breaking
Breaking the pile head according to the designed elevation of the pile top of the support pile;
construction of S2 drainage ditch
S21 digging the earth of the drainage ditch: according to the design elevation of the bottom of the drainage ditch, excavating soil layers between the inner and outer drainage piles to the bottom of the drainage ditch, after folding grids empirically, constructing a drainage ditch cushion layer, and then pouring a drainage ditch bottom plate;
s22 planting steel bars on the side wall of the drainage ditch: the side wall of the drainage ditch comprises an inner side wall and an outer side wall which are both double-layer bidirectional steel bars, the double-layer horizontal steel bars need to be embedded with steel bars and anchored into a support pile, namely the double-layer horizontal steel bars on the inner side wall are anchored into an inner row pile, the double-layer horizontal steel bars on the outer side wall are anchored into an outer row pile, and the length of the anchored steel bars is 150 mm;
s23 drainage ditch side wall reinforcement construction: firstly, overlapping the reinforcing steel bars on the side wall of the drainage ditch with the reinforcing steel bars which are planted with the reinforcing steel bars in the step S32, and then binding the vertical reinforcing steel bars on the side wall of the drainage ditch;
s24 mounting of side wall templates of drainage ditches: after the side wall steel bars are bound and accepted, erecting and reinforcing a side wall template according to the cross section size of the drainage ditch;
s25 concrete pouring of the side wall of the drainage ditch: in the concrete pouring process, the concrete needs to be vibrated to be compact, so that the concrete pouring forming quality is ensured;
s3 crown beam construction
S31 binding of crown beam steel bars: binding crown beam steel bars on the inner and outer rows of piles and reserving a drainage ditch inspection well;
s32, embedding the retaining wall and the diagonal bracing steel bars in advance, embedding the retaining wall and the diagonal bracing steel bars in the crown beam steel bars in advance, wherein the length of the embedded steel bars inserted into the crown beam is not less than 500 mm;
s33 supporting the crown beam template on the drainage ditch; after the acceptance of the crown beam steel bars is qualified, erecting and reinforcing a crown beam template according to the thickness size of the crown beam;
s34, pouring and tamping the crown beam concrete;
s35 taking out the supporting material and the template material of the crown beam from the inspection wellhead after the construction of the crown beam is completed;
s4 retaining wall and diagonal bracing construction
S41 binding the retaining wall and the diagonal bracing steel bars; the reinforcing steel bars of the retaining wall and the inclined strut are overlapped with the reinforcing steel bars of the retaining wall and the inclined strut which are pre-embedded in the step S42;
s42, after the steel bars are bound and accepted, erecting and reinforcing a retaining wall and an inclined strut template according to the cross section sizes of the retaining wall and the inclined strut;
s43, casting and tamping construction of the retaining wall and the diagonal bracing concrete is carried out; concrete pouring of the retaining wall and the inclined strut is carried out layer by layer in a layering mode, and the layering height is generally 300-500 mm;
s5 masonry inspection shaft well wall
Before backfilling the earthwork of the foundation pit, building a well wall of the inspection well to the ground elevation along the position of a well mouth of the inspection well by using M7.5 cement mortar and MU10 bricks, namely the height of the well wall is consistent with the ground elevation.
Claims (3)
1. The utility model provides a take double row pile foundation ditch supporting system in escape canal and retaining wall, includes double row pile and guan liang (2), the double row pile includes interior row pile (1) and outer row of stake (7), its characterized in that:
the top beam is laid on the top ends of the outer row piles (1) and the inner row piles (7), a retaining wall (3) is constructed on the top surface of the top beam (2), the top end of the retaining wall is consistent with the elevation of the ground, and a drainage ditch (5) is arranged between the inner row piles (1) and the outer row piles (7) on the bottom surface of the top beam;
the retaining wall is built on one side, close to the outer row piles (7), of the top surface of the crown beam, the retaining wall is a cantilever type retaining wall, a foundation pit soil layer (9) is arranged on the outer side of the retaining wall, an inclined strut (4) is arranged on the inner side of the retaining wall, the vertical surface of the inclined strut is rigidly connected with the retaining wall in an anchoring mode, the horizontal bottom surface of the inclined strut is rigidly connected with the crown beam (2) in an anchoring mode, the included angle between the vertical surface and the horizontal bottom surface of the inclined strut is 30-60 degrees, and the distance between the two inclined struts is 3-10;
escape canal (5) include inside wall (51), lateral wall (52) and bottom plate (53), and the lateral wall is hugged closely outer row pile and is linked together with outer row of stake, and interior row pile is hugged closely and is linked together with interior row pile to the inside wall, and inside wall and lateral wall top surface height are highly unanimous with the top height of interior row pile and outer row pile, cover and open on the hat roof beam of escape canal top surface have with escape canal (5) communicating inspection shaft (6), inspection shaft (6) are located between two bracing of being separated by.
2. The double-row pile foundation pit supporting system with the drainage ditch and the retaining wall as claimed in claim 1, wherein: the inspection well is circular or square, a well wall is built on the upper portion of the well mouth, and the elevation of the top of the well wall is consistent with the elevation of the ground.
3. The utility model provides a take construction method of double row pile foundation ditch supporting system of escape canal and retaining wall which characterized in that: the construction method is the construction method of the double-row pile foundation pit supporting system with the drainage ditch and the retaining wall, which comprises the following steps:
s1 double-row pile construction
S11, manufacturing a pile body reinforcement cage;
s12 piling: pile driving is started after the pile body steel reinforcement cage is qualified in manufacturing and acceptance, the construction of double-row piles adopts a jump driving mode, namely, the first pile is driven, one or more piles behind are skipped, the construction time of adjacent piles is prolonged, and the problem that the concrete strength of the front pile is not yet reached to the design strength and is damaged due to the influence of the construction of the adjacent piles is solved;
s13 pile body concrete pouring and tamping: because the elevation of the pile top of the double-row pile is lower than the original ground elevation, the casting elevation of concrete is controlled by a hanging hammer in the concrete pouring process so as to avoid concrete over-pouring;
s14 pile head breaking
Breaking the pile head according to the designed elevation of the pile top of the support pile;
construction of S2 drainage ditch
S21 digging the earth of the drainage ditch: according to the design elevation of the bottom of the drainage ditch, excavating soil layers between the inner and outer drainage piles to the bottom of the drainage ditch, after folding grids empirically, constructing a drainage ditch cushion layer, and then pouring a drainage ditch bottom plate;
s22 planting steel bars on the side wall of the drainage ditch: the side wall of the drainage ditch comprises an inner side wall and an outer side wall which are both double-layer bidirectional steel bars, the double-layer horizontal steel bars need to be embedded with steel bars and anchored into a support pile, namely the double-layer horizontal steel bars on the inner side wall are anchored into an inner row pile, the double-layer horizontal steel bars on the outer side wall are anchored into an outer row pile, and the length of the anchored steel bars is 150 mm;
s23 drainage ditch side wall reinforcement construction: firstly, overlapping the reinforcing steel bars on the side wall of the drainage ditch with the reinforcing steel bars which are planted with the reinforcing steel bars in the step S32, and then binding the vertical reinforcing steel bars on the side wall of the drainage ditch;
s24 mounting of side wall templates of drainage ditches: after the side wall steel bars are bound and accepted, erecting and reinforcing a side wall template according to the cross section size of the drainage ditch;
s25 concrete pouring of the side wall of the drainage ditch: in the concrete pouring process, the concrete needs to be vibrated to be compact, so that the concrete pouring forming quality is ensured;
s3 crown beam construction
S31 binding of crown beam steel bars: binding crown beam steel bars on the inner and outer rows of piles and reserving a drainage ditch inspection well;
s32, embedding the retaining wall and the diagonal bracing steel bars in advance, embedding the retaining wall and the diagonal bracing steel bars in the crown beam steel bars in advance, wherein the length of the embedded steel bars inserted into the crown beam is not less than 500 mm;
s33 supporting the crown beam template on the drainage ditch; after the acceptance of the crown beam steel bars is qualified, erecting and reinforcing a crown beam template according to the thickness size of the crown beam;
s34, pouring and tamping the crown beam concrete;
s35 taking out the supporting material and the template material of the crown beam from the inspection wellhead after the construction of the crown beam is completed;
s4 retaining wall and diagonal bracing construction
S41 binding the retaining wall and the diagonal bracing steel bars; the reinforcing steel bars of the retaining wall and the inclined strut are overlapped with the reinforcing steel bars of the retaining wall and the inclined strut which are pre-embedded in the step S42;
s42, after the steel bars are bound and accepted, erecting and reinforcing a retaining wall and an inclined strut template according to the cross section sizes of the retaining wall and the inclined strut;
s43, casting and tamping construction of the retaining wall and the diagonal bracing concrete is carried out; concrete pouring of the retaining wall and the inclined strut is carried out layer by layer in a layering mode, and the layering height is generally 300-500 mm;
s5 masonry inspection shaft well wall
Before backfilling the earthwork of the foundation pit, building a well wall of the inspection well to the ground elevation along the position of a well mouth of the inspection well by using M7.5 cement mortar and MU10 bricks, namely the height of the well wall is consistent with the ground elevation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019106571856 | 2019-07-19 | ||
| CN201910657185 | 2019-07-19 |
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| Publication Number | Publication Date |
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| CN110685287A true CN110685287A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911068500.8A Pending CN110685287A (en) | 2019-07-19 | 2019-11-05 | Double-row pile foundation pit supporting system with drainage ditch and retaining wall and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726782A (en) * | 2020-12-30 | 2021-04-30 | 北京市市政工程研究院 | High-performance multi-point anchoring PE plate composite reinforcing and repairing system for drainage ditch and construction method of system |
| CN115094908A (en) * | 2022-07-22 | 2022-09-23 | 深圳市南华岩土工程有限公司 | Multi-section fixed-point limiting anti-tilting foundation pit support and process method |
-
2019
- 2019-11-05 CN CN201911068500.8A patent/CN110685287A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726782A (en) * | 2020-12-30 | 2021-04-30 | 北京市市政工程研究院 | High-performance multi-point anchoring PE plate composite reinforcing and repairing system for drainage ditch and construction method of system |
| CN112726782B (en) * | 2020-12-30 | 2022-05-10 | 北京市市政工程研究院 | High-performance multi-point anchoring PE plate composite reinforcing and repairing system for drainage ditch and construction method of system |
| CN115094908A (en) * | 2022-07-22 | 2022-09-23 | 深圳市南华岩土工程有限公司 | Multi-section fixed-point limiting anti-tilting foundation pit support and process method |
| CN115094908B (en) * | 2022-07-22 | 2024-01-19 | 深圳市南华岩土工程有限公司 | Multistage fixed-point limiting inclination-preventing foundation pit support and process method |
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