CN114775624A - Waterproof supporting structure for pile foundation pit and construction method thereof - Google Patents
Waterproof supporting structure for pile foundation pit and construction method thereof Download PDFInfo
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- CN114775624A CN114775624A CN202210066417.2A CN202210066417A CN114775624A CN 114775624 A CN114775624 A CN 114775624A CN 202210066417 A CN202210066417 A CN 202210066417A CN 114775624 A CN114775624 A CN 114775624A
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- section steel
- supporting section
- foundation pit
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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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- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Foundations (AREA)
Abstract
The invention discloses a construction method of a waterproof supporting structure of a pile foundation pit, which integrates a concrete precast slab and supporting section steel through concreting, thereby realizing high-efficiency waterproof of the foundation pit, having high structural strength and firm and stable connection, being convenient to position and assemble during construction, effectively solving the problem of rock-soil water seepage outside the foundation pit, ensuring the safety of foundation pit engineering, being capable of pouring a building body for a long time according to the requirement of the supporting structure or being recycled after being disassembled and cleaned, further reducing the engineering cost and saving materials and energy. The invention solves the problems of small rigidity, weak connection part and poor seepage resistance of the traditional shell supporting structure.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a waterproof supporting structure of a pile foundation pit and a construction method thereof.
Background
Excavation, supporting and waterproofing of the foundation pit are one of important works in building engineering, and along with the increase of development strength, the reliability of the foundation pit supporting not only influences the construction efficiency, but also relates to the overall safety of the engineering.
The foundation pit support is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. 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 usually adopts temporary retaining, reinforcing, protecting and underground water controlling measures.
The existing steel plate and concrete supporting structure has limited supporting depth of a single-row supporting pile due to small supporting rigidity and weak connection part, and has higher requirement on soil quality and higher requirement on deep excavation of a foundation pit; the construction and the disassembly of the concrete supporting structure are troublesome, and no better concrete prefabricated part supporting structure is provided for solving the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, a construction method of a waterproof supporting structure of a pile foundation pit is provided so as to solve the problems of small rigidity, weak connection part and poor seepage resistance of the existing casing supporting structure.
In order to realize above-mentioned purpose, provide a waterproof supporting construction of pile foundation hole, include:
the concrete precast slab is attached to rock soil on the outer side of the foundation pit, and a circle of the concrete precast slab is arranged along the circumferential direction of the foundation pit;
the supporting section steel is vertically arranged, the supporting section steel is provided with an inner side facing the precast concrete slab and an outer side back to the precast concrete slab, rear pouring grooves are formed in the inner side and the outer side of the supporting section steel respectively, notches of the rear pouring grooves in the inner side of the supporting section steel are attached to the outer side of the precast concrete slab, and communicating holes communicated with the rear pouring grooves in the inner side and the outer side of the supporting section steel are formed in the supporting section steel;
the tie rod penetrates through the communicating hole, and two ends of the tie rod respectively extend to the inner side and the outer side of the support section steel to form rear pouring grooves respectively;
the blocking cover plate is used for blocking the notch of the rear pouring groove on the outer side of the supporting section steel and is arranged on 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.
Furthermore, the notch of the rear pouring groove extends oppositely to form a limiting flange.
Furthermore, a plug is formed on the inner side of the blocking cover plate, the plug penetrates through the position between two limiting flanges of a notch of a rear pouring groove in 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 limiting flanges, and the limiting flanges are attached to the inner sides of the limiting flanges.
Furthermore, a plurality of lockholes are respectively formed in the plugging cover plate and the supporting profile steel, and lock rods are detachably inserted into the lockholes of the plugging cover plate and the supporting profile steel.
Furthermore, the groove wall of the rear pouring groove is arc-shaped.
Furthermore, the supporting section steel is provided with two opposite adjacent sides, one adjacent side of the supporting section steel extends to form an overlapping flange, the other adjacent side of the supporting section steel is provided with an inserting notch, the overlapping flange is embedded in the inserting notch of the adjacent supporting section steel, the overlapping flange is provided with through holes in opposite positions, a limiting rod is formed in the inserting notch, and the limiting rod is detachably arranged in the through holes in a penetrating mode.
Furthermore, the supporting section steel comprises multiple sections of unit steel which are coaxially overlapped together, the upper end and the lower end of each unit steel are respectively provided with insertion holes which are opposite in position, and two insertion holes which are opposite in position are provided with connecting rods in the two insertion holes at the end parts of the two adjacent unit steel.
Furthermore, the concrete precast slab comprises a plurality of unit plates which are connected end to end, the unit plates are arranged along the circumferential direction of the foundation pit, and waterproof concrete is filled in a splicing seam between every two adjacent unit plates.
The invention provides a construction method of a waterproof supporting structure of a pile foundation pit, which comprises the following steps:
the concrete precast slabs are attached to rock soil on the outer side of the foundation pit, so that a circle of concrete precast slabs are arranged along the circumferential direction of the foundation pit;
vertically attaching supporting profile steels to the outer side of the concrete precast slab one by one, so that a notch of a rear pouring groove in the inner side of each supporting profile steel is attached to the outer side of the concrete precast slab, a circle of the supporting profile steels are arranged along the circumferential direction of the foundation pit, and the supporting profile steels are detachably spliced together in an end-to-end manner;
a tie rod is arranged in a communicating hole of each supporting section steel in a penetrating way;
mounting 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 supporting section steel, and bonding the concrete in the rear pouring groove on the inner side of the supporting section steel to the outer side of the concrete precast slab so as to form the foundation pit waterproof supporting structure by the concrete precast slab and the supporting section steel joint structure.
The pile foundation pit waterproof supporting structure has the beneficial effects that the concrete precast slab and the supporting section steel are connected into a whole through the concreted concrete, so that the high-efficiency waterproof effect on the foundation pit is realized, the structural strength is high, the connection is firm and stable, the positioning and the assembly can be conveniently carried out during construction, the problem of rock-soil water seepage outside the foundation pit is effectively solved, the safety of foundation pit engineering is ensured, in addition, the supporting structure can be used for long-term building body pouring or can be recycled after being disassembled and cleaned according to the needs, the engineering cost is further reduced, and the materials and the energy are saved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a waterproof supporting structure of a pile foundation pit according to an embodiment of the present invention.
Fig. 2 is a plan view of a waterproof supporting structure for a pile foundation pit according to an embodiment of the present invention.
Fig. 3 is a sectional view of a waterproof supporting structure for a pile foundation pit according to an embodiment of the present invention.
Fig. 4 is a schematic connection diagram of the support section steel and the plugging cover plate according to the embodiment of the invention.
Fig. 5 is a schematic structural view of the support section steel of the embodiment of the invention.
Fig. 6 is a plan view of the supporting section steel of the embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a plugging cover plate according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 7, the present invention provides a waterproof supporting structure for a pile foundation pit, including: the concrete precast slab comprises a concrete precast slab 1, a plurality of supporting section steels 2, a tie rod 3 and a plugging cover plate 4.
Wherein, the concrete precast slab 1 is attached to the outer rock soil 10 of the foundation pit. The concrete precast slabs 1 are arranged in a circle along the circumferential direction of the foundation pit. As shown in fig. 1, the concrete precast slab is disposed on the upper portion of the pit bottom 101 of the foundation pit and attached to the outer soil of the foundation pit. After the water is pumped in the foundation pit, holes and gaps on the surface of a base layer of the foundation pit are blocked and ground by mortar, the surface of the base layer is flat, solid, rough and clean, is fully wet and has no accumulated water, then an embedded part is constructed, the embedded part is embedded in the outside rock soil 10, and finally the concrete is connected with the embedded part.
And a plurality of supporting section steels 2 are attached to the outer side of the concrete precast slab 1. And, many support shaped steel 2 set up the round along the circumference direction of foundation ditch. Wherein, a plurality of supporting section steels 2 are detachably spliced together end to end. Each supporting section steel 2 is vertically arranged.
The supporting section steel 2 has an inner side facing the concrete precast slab 1 and an outer side facing away from the concrete precast slab 1. Rear casting grooves 20 are formed on the inner side and the outer side of the supporting section steel 2. The notch of the rear casting groove 20 on the inner side of the support section steel 2 is attached to the outer side of the concrete precast slab 1, and the notch of the rear casting groove 20 on the inner side of the support section steel 2 is blocked by the concrete precast slab. Further, the support section steel 2 is formed with a communication hole. 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 communicating hole in a penetrating way. Two ends of the tie rod extend to the inner side and the outer side of the supporting section steel 2 respectively to form a rear pouring groove 20. In some embodiments, 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 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 support section steel 2. Concrete in the rear pouring grooves 20 on the inner side and the outer side of the support section steel 2 permeates into the connecting holes and wraps the two ends of the tie rods. The concrete precast slabs and the supporting section steel are connected into a whole by the solidified concrete to form the waterproof supporting structure of the pile foundation pit.
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 solidified concrete, so that the high-efficiency waterproof effect on a foundation pit is realized, the structural strength is high, the connection is firm and stable, the positioning and the assembling can be conveniently carried out during construction, the problem of rock-soil water seepage outside the foundation pit is effectively solved, the safety of foundation pit engineering is guaranteed, in addition, the supporting structure can be used for long-term building body pouring or can be recycled after being disassembled and cleaned according to the needs, the engineering cost is further reduced, and the material and the energy are saved.
Furthermore, in order to improve the pulling force of the concrete after consolidation, a limiting flange 21 is formed by extending the notch of the rear casting groove 20 in an opposite direction.
In a preferred embodiment, the plug 41 is formed on the inner side of the sealing cover plate. The plug 41 is arranged between the two limit flanges 21 of the notch of the rear pouring groove 20 on the outer side of the support section steel 2 in a penetrating manner, the plug 41 extends to the inner side of the rear pouring groove 20, and the plug 41 extends towards the groove wall directions of two opposite sides of the rear pouring groove 20 to form limit flanges 42. The retaining flange 42 fits inside the retaining 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 in the lock holes of the plugging cover plate and the supporting section steel 2. Wherein, a plurality of lockholes have been seted up respectively to the relative both sides of shutoff apron. A plurality of lockholes are respectively arranged on two opposite sides of the supporting section steel. And the rear pouring groove is arranged among a plurality of lock holes on two sides of the support section steel.
In a preferred embodiment, the walls of the rear casting trough 20 are curved. The rear pouring groove with the arc-shaped wall surface is filled with concrete, the external corner of the concrete is not easy to crack after the concrete is solidified, the external corner of the common rectangular groove is easy to crack, and the waterproof performance of the cracked concrete layer is greatly reduced. The effect that sets up the drawknot pole is that the concrete that makes back pouring inslot pour can fix in the inslot more steadily, and the junction can produce certain gap when pouring, can not spill over, fracture, the fragment that condenses when the concrete produces the thermal expansion of being convenient for, and then strengthens concreting layer's an organic whole nature.
In this embodiment, the supporting section steel 2 has two opposite abutting sides. An adjoining side of the supporting section steel 2 is extended to form a lap flange 23. The other adjacent side of the supporting section steel 2 is formed with an insertion notch 201. The lap flange 23 is embedded in the insertion notch 201 of the adjacent support section steel 2. The lap joint flange 23 is provided with through holes at opposite positions. The insertion notch 201 has a stopper rod 24 formed therein. The limiting rod 24 is detachably arranged in the through hole in a penetrating mode.
In a preferred embodiment, the supporting section steel 2 comprises a plurality of sections of unit steel coaxially stacked together. The upper end and the lower end of the unit steel are respectively provided with jacks 202 opposite in position. The two insertion holes 202 at the end portions of the two adjacent unit steel materials are inserted with a connecting rod.
As a preferred embodiment, the concrete precast slab 1 includes a plurality of unit panels 11 connected end to end. The plurality of unit plates 11 are arranged along the circumferential direction of the foundation pit. And waterproof concrete is filled in the splicing seams between the two adjacent unit plates 11.
In some embodiments, anchors are attached to the outside of the concrete precast panels. The anchoring piece is T-shaped steel. The anchoring piece comprises a flange plate and a web plate, one side of the web plate is embedded 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 slab surface of the concrete precast slab, and the flange plate and the slab surface of the concrete precast slab are arranged in parallel. And after concrete is poured in the rear pouring groove, the other side of the web plate and the flange plate are coated with the concrete.
The invention provides a construction method of a waterproof supporting structure of a pile foundation pit, which comprises the following steps:
s1: and attaching the concrete precast slab 1 to the outside rock soil 10 of the foundation pit, so that the concrete precast slab 1 is arranged in a circle along the circumferential direction of the foundation pit.
S2: the supporting section steels 2 are vertically attached to the outer side of the concrete precast slab 1 one by one, so that the notches of the rear pouring grooves 20 on the inner side of each supporting section steel 2 are attached to the outer side of the concrete precast slab 1, a circle of the supporting section steels 2 is arranged along the circumferential direction of the foundation pit, and the supporting section steels 2 are detachably spliced together in an end-to-end mode.
S3: and a tie rod is arranged in the communicating hole of each supporting section steel 2 in a penetrating way.
S4: and mounting a plugging cover plate on the outer side of the supporting section steel 2 so as to plug the notch of the rear pouring groove 20 on the outer side of the supporting section steel 2.
S5: concrete is poured into the rear pouring grooves 20 on the inner side and the outer side of the supporting section steel 2, and the concrete in the rear pouring groove 20 on the inner side of the supporting section steel 2 is adhered to the outer side of the concrete precast slab 1 so as to connect the concrete precast slab 1 and the supporting section steel 2 to form a pile foundation pit waterproof supporting structure.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides a waterproof supporting construction of pile foundation pit which characterized in that includes:
the concrete precast slab is attached to rock soil on the outer side of the foundation pit, and a circle of concrete precast slab is arranged along the circumferential direction of the foundation pit;
the supporting section steel is vertically arranged, the supporting section steel is provided with an inner side facing the precast concrete slab and an outer side back to the precast concrete slab, rear pouring grooves are formed in the inner side and the outer side of the supporting section steel respectively, notches of the rear pouring grooves in the inner side of the supporting section steel are attached to the outer side of the precast concrete slab, and communicating holes communicated with the rear pouring grooves in the inner side and the outer side of the supporting section steel are formed in the supporting section steel;
the tie rod penetrates through the communication hole, and two ends of the tie rod respectively extend to the inner side and the outer side of the supporting section steel to form rear pouring grooves respectively;
the blocking cover plate is used for blocking the notch of the rear pouring groove on the outer side of the supporting section steel and is arranged on 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 waterproofing structure according to claim 1, wherein the notch of the rear casting groove is extended oppositely to form a limiting flange.
3. The foundation pit waterproof structure of claim 2, wherein a plug is formed on the inner side of the blocking cover plate, the plug is arranged between two limiting flanges of a notch of a rear pouring groove on the outer side of the supporting section steel in a penetrating manner and extends into the rear pouring groove, the plug extends towards two opposite sides of the rear pouring groove to form limiting flanges, and the limiting flanges are attached to the inner sides of the limiting flanges.
4. The foundation pit waterproof structure of claim 3, wherein a plurality of lockholes are respectively opened on the plugging cover plate and the supporting section steel, and a lock rod is detachably inserted in the lockholes of the plugging cover plate and the supporting section steel.
5. The foundation pit waterproofing structure according to claim 1, wherein the groove wall of the rear casting groove has an arc shape.
6. The waterproof foundation pit structure according to claim 1, wherein the supporting section steel has 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 forms an insertion notch, the lap joint flange is embedded in the insertion notch of the adjacent supporting section steel, the lap joint flange is provided with through holes in opposite positions, a limiting rod is formed in the insertion notch, and the limiting rod is detachably arranged in the through hole in a penetrating manner.
7. The waterproof structure of a foundation pit according to claim 1, wherein the supporting section steel comprises a plurality of sections of unit steel materials coaxially overlapped together, the upper end and the lower end of each unit steel material are respectively provided with insertion holes in opposite positions, and the two insertion holes in opposite positions at the end parts of two adjacent unit steel materials are inserted with connecting rods.
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, the unit slabs are arranged along a circumferential direction of the foundation pit, and a splicing seam between two adjacent unit slabs is filled with waterproof concrete.
9. A construction method of a pile foundation pit waterproof and supporting structure according to any one of claims 1 to 8, comprising the steps of:
the concrete precast slabs are attached to rock soil on the outer side of the foundation pit, so that the concrete precast slabs are arranged in a circle along the circumferential direction of the foundation pit;
vertically attaching supporting profile steels to the outer side of the concrete precast slab one by one, so that the notch of a rear pouring groove on the inner side of each supporting profile steel is attached to the outer side of the concrete precast slab, a circle of supporting profile steels are arranged along the circumferential direction of the foundation pit, and the supporting profile steels are detachably spliced together in an end-to-end manner;
a tie rod is arranged in a communicating hole of each supporting section steel in a penetrating way;
mounting 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 supporting section steel, and bonding the concrete in the rear pouring groove on the inner side of the supporting section steel to the outer side of the concrete precast slab so as to form the foundation pit waterproof supporting structure by the concrete precast slab and the supporting section steel joint 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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| CN114775624A true CN114775624A (en) | 2022-07-22 |
| CN114775624B 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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|---|---|
| CN114775624B (en) | 2023-09-01 |
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