CN114775624B - Pile foundation pit waterproof supporting structure and construction method thereof - Google Patents
Pile foundation pit waterproof supporting structure and construction method thereof Download PDFInfo
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- CN114775624B CN114775624B CN202210066417.2A CN202210066417A CN114775624B CN 114775624 B CN114775624 B CN 114775624B CN 202210066417 A CN202210066417 A CN 202210066417A CN 114775624 B CN114775624 B CN 114775624B
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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
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Foundations (AREA)
Abstract
The application discloses a construction method of a pile foundation pit waterproof supporting structure, which combines a concrete precast slab and supporting section steel into a whole through concreting, thereby realizing the efficient waterproof of a foundation pit, having high structural strength, firm and stable connection, being convenient for positioning and assembling during construction, effectively solving the problem of water seepage of rock and soil outside the foundation pit, guaranteeing the safety of foundation pit engineering, and being capable of being used for pouring a building body for a long time or being recycled after being disassembled and cleaned according to the requirement, further reducing engineering cost and saving things and energy. The application solves the problems of small rigidity, weak joint and poor seepage resistance of the existing shell supporting structure.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a pile foundation pit waterproof supporting structure and a construction method thereof.
Background
The excavation of foundation ditch and support, waterproof is one of the important work in the building engineering, and along with development intensity's increase, the reliability of foundation ditch support not only has influenced the efficiency of construction, still relates to the holistic security of engineering.
The foundation pit support is used for guaranteeing the safety of underground structure construction and surrounding environment of the foundation pit, and is used for supporting, reinforcing and protecting the side wall of the foundation pit and the surrounding environment. In order to protect the safety of the construction of the underground main structure and the surrounding environment of the foundation pit, the foundation pit is usually provided with temporary supporting, reinforcing and protecting and groundwater control measures.
The existing steel plate and concrete supporting structure has the defects that the supporting depth of single-row supporting piles is limited due to small supporting rigidity and weak joints, the requirements on soil quality are high, and the deep excavation requirement of a foundation pit is high; the construction and the disassembly of the concrete support structure are more troublesome, and no better concrete prefabricated member support structure is needed to solve the problems.
Disclosure of Invention
In order to overcome the defects existing in the prior art, a construction method of a pile foundation pit waterproof supporting structure is provided at present, so that the problems of small rigidity, weak joint and poor seepage resistance of the existing shell supporting structure are solved.
In order to achieve the above object, there is provided a pile pit waterproof supporting structure comprising:
the concrete precast slab is attached to the outer side rock soil of the foundation pit, and the concrete precast slab is provided with a circle along the circumferential direction of the foundation pit;
the support section steel is vertically arranged, the support section steel is provided with an inner side facing the concrete precast slab and an outer side facing away from the concrete precast slab, rear pouring grooves are respectively formed in the inner side and the outer side of the support section steel, the notch of the rear pouring groove in the inner side of the support section steel is attached to the outer side of the concrete precast slab, and communication holes communicated with the rear pouring grooves in the inner side and the outer side of the support section steel are formed in the support section steel;
the tie rod penetrates through the communication hole, and two ends of the tie rod extend to the inner side and the outer side of the supporting section steel respectively to form rear pouring grooves;
the plugging cover plate is used for plugging the notch of the rear pouring groove at the outer side of the supporting section steel and is arranged at the outer side of the supporting section steel; and
and concrete is poured into the rear pouring grooves on the inner side and the outer side of the supporting section steel.
Further, the notch of the rear pouring groove extends oppositely to form a limit flange.
Further, a plug is formed on the inner side of the plugging cover plate, the plug penetrates between two limit flanges of a notch of a rear pouring groove on the outer side of the supporting section steel and extends into the rear pouring groove, the plug extends towards two opposite sides of the rear pouring groove to form limit flanges, and the limit flanges are attached to the inner sides of the limit flanges.
Further, the plugging cover plate and the supporting section steel are respectively provided with a plurality of lock holes, and lock rods are detachably inserted into the lock holes of the plugging cover plate and the supporting section steel.
Further, the groove wall of the rear pouring groove is arc-shaped.
Further, the supporting section steel is provided with two opposite adjacent sides, one adjacent side of the supporting section steel extends to form a lap joint flange, the other adjacent side of the supporting section steel is provided with an inserting notch, the lap joint flange is embedded in the inserting notch of the adjacent supporting section steel, the lap joint flange is provided with through holes with opposite positions, a limiting rod is formed in the inserting notch, and the limiting rod detachably penetrates through the through holes.
Further, the supporting section steel comprises a plurality of sections of unit steel materials which are coaxially overlapped together, the upper end and the lower end of each unit steel material are respectively provided with a jack with opposite positions, and connecting rods are inserted into the two jacks with opposite positions of the end parts of the two adjacent unit steel materials.
Further, the concrete precast slab comprises a plurality of unit slabs connected end to end, the plurality of unit slabs are arranged along the circumferential direction of the foundation pit, and waterproof concrete is filled in the splice joint between two adjacent unit slabs.
The application provides a construction method of a pile foundation pit waterproof supporting structure, which comprises the following steps:
attaching the concrete precast slab to the outer rock soil of the foundation pit, so that the concrete precast slab is provided with a circle along the circumferential direction of the foundation pit;
vertically attaching supporting section steel to the outer side of the concrete precast slab one by one, so that the notch of a rear pouring groove at the inner side of each supporting section steel is attached to the outer side of the concrete precast slab, a circle of supporting section steel is arranged along the circumferential direction of the foundation pit, and the supporting section steel is detachably spliced together in an end-to-end mode;
the tie rod is penetrated into the communication hole of each supporting section steel;
installing a plugging cover plate on the outer side of the supporting section steel to plug the notch of the rear pouring groove on the outer side of the supporting section steel;
and pouring concrete into the rear pouring grooves on the inner side and the outer side of the support section steel, wherein the concrete in the rear pouring groove on the inner side of the support section steel is adhered to the outer side of the concrete precast slab so as to connect the concrete precast slab with the support section steel to form the pile foundation pit waterproof support structure.
The pile foundation pit waterproof supporting structure has the beneficial effects that the concrete precast slabs and the supporting section steel are connected into a whole through the concreted concrete, so that the high-efficiency waterproof performance of a foundation pit is realized, the structure strength is high, the connection is firm and stable, the positioning and the assembly can be conveniently carried out during construction, the problem of water seepage of rock and soil outside the foundation pit can be effectively solved, the safety of foundation pit engineering is ensured, and in addition, the supporting structure can be used for pouring a building body for a long time according to requirements or can be recycled after being disassembled and cleaned, so that the engineering cost is reduced, and the objects and the energy are saved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a pile pit waterproof supporting structure according to an embodiment of the present application.
Fig. 2 is a plan view of a pile pit waterproof supporting structure according to an embodiment of the present application.
Fig. 3 is a sectional view of a pile pit waterproof supporting structure according to an embodiment of the present application.
Fig. 4 is a schematic diagram of connection between the support section steel and the plugging cover plate according to the embodiment of the application.
Fig. 5 is a schematic structural view of a supporting section steel according to an embodiment of the present application.
Fig. 6 is a top view of a support section steel according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of a plugging cover plate according to an embodiment of the application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 7, the present application provides a pile pit waterproof supporting structure, comprising: the concrete precast slab 1, a plurality of support section steel 2, a tie rod 3 and a plugging cover plate 4.
Wherein, concrete prefabricated slab 1 is laminated in outside ground 10 of foundation ditch. The concrete precast slab 1 is provided with a circle along the circumferential direction of the foundation pit. As shown in fig. 1, a concrete precast slab is provided on the upper portion of a pit bottom 101 of a foundation pit and is attached to the outer rock soil of the foundation pit. After the foundation pit is pumped, the holes and gaps on the surface of the base layer of the foundation pit are blocked and ground by using mortar, the surface of the base layer is smooth, firm, rough and clean, the surface of the base layer is sufficiently wet and free of water accumulation, then an embedded part is constructed, the embedded part is embedded in the outside rock and soil 10, and finally the concrete is connected with the embedded part.
The plurality of support section steel 2 are attached to the outer side of the concrete precast slab 1. And, a plurality of support section steel 2 sets up the round along the circumference direction of foundation ditch. Wherein, a plurality of support shaped steel 2 end to end's detachably splice together. Each supporting section steel 2 is vertically arranged.
The supporting section steel 2 has an inner side facing the concrete prefabricated panel 1 and an outer side facing away from the concrete prefabricated panel 1. The inner side and the outer side of the supporting section steel 2 are respectively formed with rear pouring grooves 20. The notch of the rear pouring groove 20 on the inner side of the supporting section steel 2 is attached to the outer side of the concrete precast slab 1, and the notch of the rear pouring groove 20 on the inner side of the supporting section steel 2 is plugged by the concrete precast slab. Further, the supporting section steel 2 is formed with communication holes. The communication holes are communicated with the rear pouring grooves 20 on the inner side and the outer side of the supporting section steel 2.
The tie rod is arranged in the communication hole in a penetrating way. The two ends of the tie rod extend to the inner side and the outer side of the supporting section steel 2 respectively to form rear pouring grooves 20. In some embodiments, the tie rod has an outer diameter smaller than an inner diameter of the communication hole, and a gap is provided between an outer wall of the tie rod and an inner wall of the communication hole.
The plugging cover plate 4 is arranged on the outer side of the supporting section steel 2. The plugging cover plate 4 is used for plugging the notch of the rear pouring groove 20 on the outer side of the supporting section steel 2.
Concrete 5 is poured into the rear casting grooves 20 on the inner and outer sides of the supporting section steel 2. Concrete in the rear casting grooves 20 of the inner and outer sides of the supporting section steel 2 is penetrated into the connection holes and wrapped at both ends of the tie rod. The concreted concrete connects the concrete precast slab and the supporting section steel into a whole to form the pile foundation pit waterproof supporting structure.
According to the pile foundation pit waterproof supporting structure, the concrete precast slabs and the supporting section steel are connected into a whole through the concreted concrete, so that the efficient waterproof performance of a foundation pit is realized, the structure strength is high, the connection is firm and stable, the construction can be conveniently positioned and assembled, the problem of water seepage of rock and soil at the outer side of the foundation pit is effectively solved, the safety of foundation pit engineering is ensured, and in addition, the supporting structure can be used for pouring a building body for a long time as required, or can be recycled after being disassembled and cleaned, so that the engineering cost is reduced, and the material and energy are saved.
Further, in order to improve the drawknot force of the concreted concrete, the notch of the rear pouring groove 20 is formed with a limit flange 21 in a facing manner.
As a preferred embodiment, the plug 41 is formed on the inner side of the plugging cover plate. The plug 41 is inserted between two limit flanges 21 of the notch of the rear pouring groove 20 on the outer side of the supporting section steel 2, the plug 41 extends to the inner side of the rear pouring groove 20, and limit flanges 42 are formed by extending the plug 41 towards the groove wall directions of two opposite sides of the rear pouring groove 20. The limit flange 42 is fitted to the inner side of the limit flange 21.
In this embodiment, the plugging cover plate and the supporting section steel 2 are respectively provided with a plurality of lock holes. A lock rod 22 is detachably inserted into the lock holes of the plugging cover plate and the supporting section steel 2. Wherein, a plurality of lockholes are respectively arranged on two opposite sides of the plugging cover plate. A plurality of lock holes are respectively arranged on the two opposite sides of the supporting section steel. The back pouring groove is arranged among a plurality of lock holes on two sides of the supporting section steel.
As a preferred embodiment, the walls of the rear casting groove 20 are curved. The rear pouring groove of the arc-shaped wall surface is formed by pouring concrete into the rear pouring groove, the external corners of the concrete are not easy to crack after the concrete is solidified, the external corners of the common rectangular groove are easy to crack, and the waterproof performance of the cracked concrete layer can be greatly reduced. The effect of setting up the drawknot pole is that the concrete that makes the back pour the inslot and pour can be more stably fixed in the inslot, and can produce certain gap when the junction is pour, can not spill over, fracture, the fragment that condenses when being convenient for concrete to produce hot rising, and then strengthens the integrality of pouring concrete layer.
In this embodiment, the support profile steel 2 has two opposite abutment sides. An adjoining side of the support section steel 2 is formed with a lap flange 23 extending. The other adjacent side of the supporting section steel 2 is formed with a plugging gap 201. The overlapping flanges 23 are embedded in the insertion notches 201 of the adjacent support section steel 2. The overlapping flanges 23 are provided with through holes which are opposite to each other. The insertion notch 201 has a stopper rod 24 formed therein. The limiting rod 24 is detachably penetrated in the through hole.
As a preferred embodiment, the supporting section steel 2 comprises a plurality of sections of unit steel coaxially stacked together. The upper and lower ends of the unit steel are respectively provided with insertion holes 202 which are opposite to each other. Connecting rods are inserted into two insertion holes 202 opposite to the ends of two adjacent unit steels.
As a preferred embodiment, the concrete precast slab 1 includes a plurality of unit panels 11 connected end to end. The plurality of unit panels 11 are disposed along the circumferential direction of the foundation pit. The splice joint between two adjacent unit panels 11 is filled with waterproof concrete.
In some embodiments, anchors are attached to the outside of the concrete precast slab. The anchoring piece is T-shaped steel. The anchor assembly comprises a flange plate and a web plate, wherein one side of the web plate is buried in the concrete precast slab, the other side of the web plate extends to the outside of the concrete precast slab, the flange plate is connected to the other side of the web plate, the web plate is perpendicular to the plate surface of the concrete precast slab, and the flange plate and the plate surface of the concrete precast slab are arranged in parallel. And after concrete is poured in the post-pouring groove, the concrete is coated on the other side of the web plate and the flange plate.
The application provides a construction method of a pile foundation pit waterproof supporting structure, which comprises the following steps:
s1: the concrete precast slab 1 is attached to the outer side rock soil 10 of the foundation pit, so that the concrete precast slab 1 is provided with a circle along the circumferential direction of the foundation pit.
S2: the support section steel 2 is vertically attached to the outer side of the concrete precast slab 1 one by one, so that the notch of the rear pouring groove 20 on the inner side of the support section steel 2 is attached to the outer side of the concrete precast slab 1, the support section steel 2 is provided with one circle and a plurality of support section steel 2 which are connected end to end in a detachable manner, and the support section steel 2 is spliced together.
S3: and the tie rod is arranged in the communication hole of each supporting section steel 2 in a penetrating way.
S4: and installing a plugging cover plate on the outer side of the supporting section steel 2 to plug the notch of the rear pouring groove 20 on the outer side of the supporting section steel 2.
S5: and concrete is poured into the rear pouring grooves 20 on the inner side and the outer side of the support section steel 2, and the concrete in the rear pouring grooves 20 on the inner side of the support section steel 2 is adhered to the outer side of the concrete precast slab 1 so as to connect the concrete precast slab 1 with the support section steel 2 to form a pile foundation pit waterproof support structure.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (9)
1. Waterproof supporting construction of pile foundation pit, its characterized in that includes:
the concrete precast slab is attached to the outer side rock soil of the foundation pit, and the concrete precast slab is provided with a circle along the circumferential direction of the foundation pit;
the support section steel is vertically arranged, the support section steel is provided with an inner side facing the concrete precast slab and an outer side facing away from the concrete precast slab, rear pouring grooves are respectively formed in the inner side and the outer side of the support section steel, the notch of the rear pouring groove in the inner side of the support section steel is attached to the outer side of the concrete precast slab, and communication holes communicated with the rear pouring grooves in the inner side and the outer side of the support section steel are formed in the support section steel;
the tie rod penetrates through the communication hole, two ends of the tie rod extend to the inner side and the outer side of the supporting section steel respectively to form rear pouring grooves, the outer diameter of the tie rod is smaller than the inner diameter of the communication hole, and a gap is formed between the outer wall of the tie rod and the inner wall of the communication hole;
the plugging cover plate is used for plugging the notch of the rear pouring groove at the outer side of the supporting section steel and is arranged at the outer side of the supporting section steel; and
and concrete is poured into the rear pouring grooves on the inner side and the outer side of the supporting section steel.
2. The foundation pit waterproof structure of claim 1, wherein the notch of the rear pouring groove extends oppositely to form a limit flange.
3. The foundation pit waterproof structure according to claim 2, wherein a plug is formed on the inner side of the plugging cover plate, the plug penetrates between two limit flanges of a notch of a rear pouring groove on the outer side of the supporting section steel and extends into the rear pouring groove, limit flanges are formed on opposite sides of the plug, which face the rear pouring groove, in an extending mode, and the limit flanges are attached to the inner sides of the limit flanges.
4. The foundation pit waterproof structure according to claim 3, wherein the plugging cover plate and the supporting section steel are respectively provided with a plurality of lock holes, and lock rods are detachably inserted into the lock holes of the plugging cover plate and the supporting section steel.
5. The foundation pit waterproof structure of claim 1, wherein the groove wall of the rear casting groove is arc-shaped.
6. The foundation pit waterproof structure according to claim 1, wherein the supporting section steel is provided with two opposite adjacent sides, one adjacent side of the supporting section steel extends to form a lap joint flange, the other adjacent side of the supporting section steel is provided with a plugging gap, the lap joint flange is embedded in the plugging gap of the adjacent supporting section steel, the lap joint flange is provided with through holes with opposite positions, a limit rod is formed in the plugging gap, and the limit rod detachably penetrates through the through holes.
7. The foundation pit waterproof structure according to claim 1, wherein the supporting section steel comprises a plurality of sections of unit steel coaxially overlapped together, the upper ends and the lower ends of the unit steel are respectively provided with opposite insertion holes, and connecting rods are inserted into the opposite insertion holes at the end parts of the two adjacent unit steel.
8. The foundation pit waterproof structure according to claim 1, wherein the concrete precast slab comprises a plurality of unit slabs connected end to end, a plurality of the unit slabs are arranged along the circumferential direction of the foundation pit, and waterproof concrete is filled in a splice joint between two adjacent unit slabs.
9. A construction method of a pile foundation pit waterproof supporting structure as set forth in any one of claims 1 to 8, comprising the steps of:
attaching the concrete precast slab to the outer rock soil of the foundation pit, so that the concrete precast slab is provided with a circle along the circumferential direction of the foundation pit;
vertically attaching supporting section steel to the outer side of the concrete precast slab one by one, so that the notch of a rear pouring groove at the inner side of each supporting section steel is attached to the outer side of the concrete precast slab, a circle of supporting section steel is arranged along the circumferential direction of the foundation pit, and the supporting section steel is detachably spliced together in an end-to-end mode;
the tie rod is penetrated into the communication hole of each supporting section steel;
installing a plugging cover plate on the outer side of the supporting section steel to plug the notch of the rear pouring groove on the outer side of the supporting section steel;
and pouring concrete into the rear pouring grooves on the inner side and the outer side of the support section steel, wherein the concrete in the rear pouring groove on the inner side of the support section steel is adhered to the outer side of the concrete precast slab so as to connect the concrete precast slab with the support section steel to form the pile foundation pit waterproof support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066417.2A CN114775624B (en) | 2022-01-20 | 2022-01-20 | Pile foundation pit waterproof supporting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066417.2A CN114775624B (en) | 2022-01-20 | 2022-01-20 | Pile foundation pit waterproof supporting structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN114775624A CN114775624A (en) | 2022-07-22 |
| CN114775624B true CN114775624B (en) | 2023-09-01 |
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| CN202210066417.2A Active CN114775624B (en) | 2022-01-20 | 2022-01-20 | Pile foundation pit waterproof supporting structure and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010209546A (en) * | 2009-03-09 | 2010-09-24 | Railway Technical Res Inst | Preboring h-steel pile |
| CN106480874A (en) * | 2016-12-07 | 2017-03-08 | 福州大学 | Built pile and its construction method using H profile steel and concrete |
| CN206941605U (en) * | 2017-06-24 | 2018-01-30 | 南京金宸建筑设计有限公司 | The foundation ditch supporting and retaining system component that a kind of shaped steel locally thickeies |
| CN112627193A (en) * | 2020-12-26 | 2021-04-09 | 天津武清建总建设工程集团有限公司 | Deep foundation pit open-cut supporting structure and construction method thereof |
| CN112982375A (en) * | 2021-04-15 | 2021-06-18 | 中国建筑第四工程局有限公司 | H-shaped steel supporting and waterproof device |
| CN113622431A (en) * | 2021-08-02 | 2021-11-09 | 江苏东合南岩土科技股份有限公司 | Underground structure with foam light soil isolation wall and construction method thereof |
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2022
- 2022-01-20 CN CN202210066417.2A patent/CN114775624B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010209546A (en) * | 2009-03-09 | 2010-09-24 | Railway Technical Res Inst | Preboring h-steel pile |
| CN106480874A (en) * | 2016-12-07 | 2017-03-08 | 福州大学 | Built pile and its construction method using H profile steel and concrete |
| CN206941605U (en) * | 2017-06-24 | 2018-01-30 | 南京金宸建筑设计有限公司 | The foundation ditch supporting and retaining system component that a kind of shaped steel locally thickeies |
| CN112627193A (en) * | 2020-12-26 | 2021-04-09 | 天津武清建总建设工程集团有限公司 | Deep foundation pit open-cut supporting structure and construction method thereof |
| CN112982375A (en) * | 2021-04-15 | 2021-06-18 | 中国建筑第四工程局有限公司 | H-shaped steel supporting and waterproof device |
| CN113622431A (en) * | 2021-08-02 | 2021-11-09 | 江苏东合南岩土科技股份有限公司 | Underground structure with foam light soil isolation wall and construction method thereof |
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|---|---|
| CN114775624A (en) | 2022-07-22 |
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