CN115198767A - Underground lattice wall foundation pit supporting structure of bin-type secant pile - Google Patents
Underground lattice wall foundation pit supporting structure of bin-type secant pile Download PDFInfo
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- CN115198767A CN115198767A CN202211012141.6A CN202211012141A CN115198767A CN 115198767 A CN115198767 A CN 115198767A CN 202211012141 A CN202211012141 A CN 202211012141A CN 115198767 A CN115198767 A CN 115198767A
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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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a silo type secant pile underground lattice wall foundation pit supporting structure.A transverse secant pile is arranged between a front row of longitudinal secant piles and a rear row of longitudinal secant piles; the top of the front row of longitudinal secant piles is provided with a front row of pile top lattice deep beam; the top of the rear row of longitudinal secant piles is provided with a rear row of pile top lattice deep beam; and a transverse pile top lattice deep beam is arranged at the top of the transverse secant pile. The transverse pile top lattice deep beam, the front row pile top lattice deep beam and the rear row pile top lattice deep beam form a plane rigid frame structure; the front row of longitudinal secant piles are not provided with or provided with waist beams, and the rear part provided with the waist beams is correspondingly provided with short anchor rods between piles. The pile top lattice deep beam plane rigid frame structure, the prestressed anchor cables and the like and the longitudinal and transverse secant piles form a bin type supporting space structure of the secant pile underground lattice wall. The construction cost is reduced, medium and hard ground layers are overcome, the occupied areas of a mud pit and pulping equipment are reduced, the construction is convenient and fast, the turning is flexible, and the supporting requirement of changeable outline of the foundation pit is met according to the complex shape of the outline of the foundation pit.
Description
Technical Field
The invention relates to a silo type secant pile underground lattice wall foundation pit supporting structure which is suitable for foundation pit supporting in geotechnical engineering, can effectively improve the stability of the side wall of a foundation pit, ensures the safe and normal use of buildings (structures) around the foundation pit, underground pipelines and roads, and belongs to the technical field of underground engineering construction.
Background
In recent years, underground continuous walls and secant piles are widely applied by the characteristics of underground continuous walls and secant piles along with the deepening of urban subway stations and high-rise building foundation pits, and are developed at a high speed. The underground continuous wall is a continuous underground wall structure with functions of seepage prevention, soil retaining and bearing, which is formed by digging a narrow and deep groove in the ground by using various trenching machines and by means of the wall protection effect of slurry, placing a reinforcement cage, and pouring concrete.
Underground continuous wall supporting construction has following advantage:
(1) The underground continuous wall supporting structure has small vibration and low noise during construction, and is very suitable for urban construction.
(2) The wall body has high rigidity, can bear great soil pressure after the foundation pit is excavated, has strict anti-seepage effect, and rarely has foundation settlement or collapse accidents.
(3) The application range of the underground continuous wall to the foundation is wide, and the underground continuous wall can be from a weak alluvial stratum to a medium-hard stratum. The underground continuous wall has the following disadvantages compared with other supporting structures:
(1) The cost is high, and the construction technical requirement is high.
(2) The quality of the joints between each section of continuous wall is difficult to control and tends to form weak points of the structure.
(3) There is a problem of slot wall collapse. The collapse of the groove wall causes the concrete of the wall body to exceed the allowable limit and the structure size to exceed the allowable limit, and the collapse and the subsidence of the adjacent ground surface are caused to endanger the safety of the adjacent buildings and underground pipelines.
(4) The pulping and processing system occupies a large area, is not well managed and is easy to cause field mud and pollution.
(5) The grooving depth of the underground diaphragm wall is not as deep as that of the secant pile, and grooving is difficult when meeting a compact pebble layer, medium and hard rocks and the like.
The secant pile is a pile wall formed by mutually secting (embedding the circumferences of piles) a reinforced concrete pile and an adjacent pile body of a plain concrete pile among row piles which are arranged in a plane. Compared with an underground continuous wall supporting structure, the secant pile has the following advantages:
(1) The drilling secant pile is continuously constructed, no construction cold joint between piles is mixed with soil, the construction cold joint at the framing joint of the underground diaphragm wall is often a weak link for seepage prevention, and potential water seepage hazards can be left when the construction cold joint is not in place.
(2) The secant pile is convenient and fast to construct and flexible in turning, and the variable lines can be turned as required during construction of the secant pile, so that the secant pile is more suitable for constructing foundation pits or arc foundation pits with variable planes.
(3) The rotary excavating pile machine is deeper in hole forming and higher in rock entering efficiency, and is particularly constructed in dense pebble, strongly weathered rock and medium weathered rock strata.
(4) The requirement of the mud consistency pile is lower than that of the diaphragm wall, and the stratum around the hole is self-arched according to the cylindrical characteristic of the pile hole, so that the pile has a certain circular arch function for preventing collapse.
Disclosure of Invention
The invention aims to integrate the advantages of an occlusive pile supporting structure and an underground continuous wall supporting structure, overcome the defects of the underground continuous wall supporting structure and provide a silo type occlusive pile underground lattice wall foundation pit supporting structure.
The invention provides a silo type secant pile underground lattice wall foundation pit supporting structure, which solves the following technical problems in the design and construction process of the existing foundation pit supporting structure:
(1) Compared with the conventional underground continuous wall supporting foundation pit, the construction cost can be reduced, the occupied area of a mud pit and pulping equipment is reduced, and the construction efficiency is higher in the compact pebble, strongly weathered rock and medium weathered rock stratum.
(2) The construction is convenient and fast, the turning is flexible, and the supporting requirement of the broken line type or arc type foundation pit with changeable outline of the foundation pit can be met according to the complex shape of the outline of the foundation pit.
In order to achieve the purpose, the technical scheme adopted by the invention is a silo type secant pile underground lattice wall foundation pit supporting structure, and the silo type secant pile underground lattice wall supporting structure comprises a front row of longitudinal secant piles, a rear row of longitudinal secant piles, transverse secant piles, a front row of pile top lattice deep beams, a rear row of pile top lattice deep beams, vertical prestressed anchor cables, anchor heads, waist beams, inter-pile short anchor rods and transverse pile top lattice deep beams.
The front row of longitudinal secant piles and the rear row of longitudinal secant piles are arranged in parallel front and back; a transverse occlusive pile is arranged between the front row of longitudinal occlusive piles and the rear row of longitudinal occlusive piles; the top of the front row of longitudinal secant piles is provided with a front row of pile top lattice deep beam; the top of the rear row of longitudinal secant piles is provided with a rear row of pile top lattice deep beam; and a transverse pile top lattice deep beam is arranged at the top of the transverse secant pile.
The transverse pile top lattice deep beam, the front row of pile top lattice deep beam and the rear row of pile top lattice deep beam are integrally poured to form a plane rigid frame structure; a vertical prestressed anchor cable is arranged at the vertical joint position of the rear row of longitudinal secant piles and the transverse secant pile; the top surface of the lattice deep beam at the joint position of the rear row of longitudinal secant piles and the transverse secant piles is provided with an anchor head, the anchor head consists of an anchorage device arranged on a steel backing plate, and the anchor head is arranged on the top surface of the lattice deep beam at the top of the rear row of longitudinal secant piles; the front row of longitudinal secant piles are not provided with or provided with waist beams, the rear parts of the waist beams are correspondingly provided with short anchor rods between piles, and the waist beams and the short anchor rods between piles are locked or welded through anchor structures. The pile top lattice deep beam plane rigid frame structure, the prestressed anchor cables, the anchor heads, the waist beams, the inter-pile short anchor rods and the longitudinal and transverse secant piles form a bin type supporting space structure of the secant pile underground lattice wall together.
Furthermore, the rear row of longitudinal secant piles are formed by pouring concrete in holes at intervals between reinforced concrete piles and plain concrete piles and are arranged along the outer side of the side wall of the foundation pit.
Further, the front row of longitudinal secant piles 1 are formed by pouring concrete at intervals of reinforced concrete piles and plain concrete piles in holes and are arranged along the side wall of the foundation pit.
Further, the front row pile top lattice deep beam, the rear row pile top lattice deep beam and the transverse pile top lattice deep beam are all structures formed by uniformly pouring reinforced concrete.
Further, the vertical prestressed anchor cable is a bearing structure formed by wrapping cement mortar outside a steel strand and anchoring the steel strand in a stratum below the pile end.
Further, the wale is a bearing structure formed by welding profile steels or pouring reinforced concrete.
Furthermore, the short anchor rod between the piles is a bearing structure formed by injecting cement paste by driving a steel perforated pipe or injecting cement paste by drilling and implanting steel bars.
Compared with the conventional underground continuous wall supporting foundation pit, the construction cost can be reduced, the occupied area of a mud pit and pulping equipment is reduced, and the construction efficiency is higher in the compact pebble, strongly weathered rock and medium weathered rock stratum. The construction is convenient and fast, the turning is flexible, and the supporting requirement of the broken line type or arc type foundation pit with changeable outline of the foundation pit can be met according to the complex shape of the outline of the foundation pit.
Drawings
Fig. 1 is an overall view I of a silo-type secant pile underground lattice wall foundation pit supporting structure.
Fig. 2 is an overall view II of a silo type secant pile underground lattice wall foundation pit supporting structure.
Fig. 3 is a schematic view of a silo-type secant pile underground lattice wall foundation pit supporting structure.
Fig. 4 is a top view of a silo type secant pile underground lattice wall foundation pit supporting structure.
Fig. 5 is a partial enlarged view of a silo-type secant pile underground lattice wall foundation pit supporting structure model.
In fig. 1-5, 1, front row of longitudinal stakes; 2. back row longitudinal secant pile; 3. transversely meshing piles; 4. a lattice deep beam is arranged at the top of the front row of piles; 5. the back row of piles form a lattice deep beam; 6. a vertical pre-stressed anchor cable; 7. an anchor head; 8. a wale; 9. short anchor rods between piles; 10. the transverse pile top lattice deep beam.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
The integral model of the underground lattice wall foundation pit supporting structure of the bin-type secant pile designed by the invention is shown in figures 1-2, the schematic diagram of the underground lattice wall foundation pit supporting structure model of the bin-type secant pile is shown in figure 3, the plan view of the underground lattice wall foundation pit supporting structure model of the bin-type secant pile is shown in figure 4, and the local enlarged view of the underground lattice wall foundation pit supporting structure model of the bin-type secant pile is shown in figure 5.
The technical scheme adopted by the invention is a silo-type secant pile underground lattice wall foundation pit supporting structure, which comprises a front row of longitudinal secant piles 1, a rear row of longitudinal secant piles 2, transverse secant piles 3, a front row of pile top lattice deep beams 4, a rear row of pile top lattice deep beams 5, vertical prestressed anchor cables 6, anchor heads 7, waist beams 8, inter-pile short anchor rods 9 and transverse pile top lattice deep beams 10; the vertical prestressed anchor cables 6 and the anchor heads 7 are arranged at the joint positions of the rear row of longitudinal secant piles 2 and the transverse secant piles 3, so that the anti-overturning capacity of the underground lattice wall supporting structure of the bin type secant pile is improved; an inter-pile short anchor rod 9 is arranged between the front row of longitudinal secant piles 1 and the rear row of longitudinal secant piles 2, a waist beam 8 is arranged in front of the front row of longitudinal secant piles 1 to form a space structure, and the overall rigidity is obviously improved.
(1) The underground latticed wall supporting structure of the bin-cylinder type secant pile is composed of a front row of longitudinal secant piles 1, a rear row of longitudinal secant piles 2, a transverse secant pile 3, a front row of pile top latticed deep beam 4, a rear row of pile top latticed deep beam 5, a vertical prestressed anchor cable 6, an anchor head 7, a waist beam 8, an inter-pile short anchor rod 9 and a transverse pile top latticed deep beam 10, so that the construction cost can be effectively reduced, the construction efficiency is improved, and the occupied area of a mud pit and pulping equipment is reduced.
(2) Vertical prestressed anchor cables 6 and anchor heads 7 are arranged at the joint positions of the rear row of longitudinal secant piles 2 and the transverse secant piles 3, so that the anti-overturning capacity of the underground lattice wall supporting structure of the bin type secant pile is improved, and the deformation of the side wall of the foundation pit is reduced.
(3) An inter-pile short anchor rod 9 is arranged between the front row of longitudinal secant piles 1 and the rear row of longitudinal secant piles 2, a waist beam 8 is arranged in front of the front row of longitudinal secant piles 1, a space structure is formed, and the overall rigidity is obviously improved.
The rear row of longitudinal secant piles 2 are formed by pouring concrete in holes at intervals between reinforced concrete piles and plain concrete piles and are arranged along the outer side of the side wall of the foundation pit; the front row of longitudinal secant piles 1 are formed by pouring concrete at intervals of reinforced concrete piles and plain concrete piles in holes and are positioned in front of the rear row of longitudinal secant piles 2, and the distance between the front row of longitudinal secant piles 1 and the rear row of longitudinal secant piles 2 is 2.0-6.0 m, and the front row of longitudinal secant piles and the rear row of longitudinal secant piles are determined by calculation; the transverse secant piles 3 are positioned between the front row of longitudinal secant piles 1 and the rear row of longitudinal secant piles 2, the distance between every two adjacent transverse secant piles 3 is 2.0-6.0 m, and the transverse secant piles are determined through calculation; the front row pile top lattice deep beam 4 is formed by pouring reinforced concrete and is positioned at the top of the front row longitudinal secant pile 1; the back row pile top lattice deep beam 5 is formed by pouring reinforced concrete and is positioned at the top of the back row longitudinal secant pile 2; the transverse pile top lattice deep beam 10 is formed by pouring reinforced concrete, is positioned at the top of the transverse secant pile 3, and is uniformly poured with the front row of pile top lattice deep beam 4 and the rear row of pile top lattice deep beam 5 to form a plane rigid frame; the vertical prestressed anchor cable 6 is formed by anchoring a steel strand wrapped by cement mortar below the pile end and is positioned at the joint position of the rear row of longitudinal secant piles 2 and the transverse secant pile 3, and the vertical prestressed anchor cable 6 is placed in a pile body and a deep beam preformed hole through the position of the vertical prestressed anchor cable and a drill hole below the pile end for grouting and then is prestressed and locked; the anchor head 7 consists of a steel backing plate and an anchorage device, is positioned at the joint position of the rear row of longitudinal secant piles 2 and the transverse secant piles 3, and is positioned on the top surface of the lattice deep beam 5 at the top of the rear row of longitudinal secant piles 2; the wales 8 are formed by welding profile steels or pouring reinforced concrete, are positioned in front of the front-row longitudinal secant piles 1, are constructed downwards layer by layer along with excavation of earth and stone of the foundation pit, and are determined according to calculation, wherein the vertical distance between every two adjacent wales 8 is 2.0-6.0 m; the short anchor rods 9 between the piles are formed by injecting cement paste by steel perforated pipes or injecting cement paste by drilling and implanting steel bars, are positioned behind the waist beam 8 and are locked or welded by an anchorage device to ensure that the exposed ends of the short anchor rods 9 are reliably connected with the waist beam 8, the horizontal distance between the short anchor rods 9 between adjacent piles is 1.5-3.0 m, and the vertical distance between the short anchor rods is the same as the vertical distance between the corresponding waist beams 8.
The technical scheme adopted by the invention is that the concrete implementation engineering of the silo type secant pile underground lattice wall foundation pit supporting structure is as follows:
(1) And (3) constructing a front-row longitudinal secant pile 1, a rear-row longitudinal secant pile 2 and a transverse secant pile 3 at intervals according to the sequence of slurry preparation, pore forming, reinforcement cage manufacturing and hoisting and concrete pouring.
(2) Constructing a front row of pile top lattice deep beam 4, a rear row of pile top lattice deep beam 5 and a transverse pile top lattice deep beam 10;
(3) Constructing a vertical prestressed anchor cable 6, applying prestress through an anchor head 7, and improving the anti-overturning capacity of the underground lattice wall foundation pit supporting structure of the bin-type secant pile;
(4) And constructing the waist beam 8 and the short anchor rods 9 between the piles layer by layer along with the excavation of the earth and stone until the bottom of the foundation pit.
Claims (8)
1. The utility model provides a silo type secant pile underground lattice wall underground structure for foundation ditch supporting, its characterized in that: the pile comprises front row longitudinal secant piles, rear row longitudinal secant piles, transverse secant piles, front row pile top lattice deep beams, rear row pile top lattice deep beams, vertical prestressed anchor cables, anchor heads, waist beams, inter-pile short anchor rods and transverse pile top lattice deep beams;
the front row of longitudinal secant piles and the rear row of longitudinal secant piles are arranged in parallel front and back; a transverse occlusive pile is arranged between the front row of longitudinal occlusive piles and the rear row of longitudinal occlusive piles; the top of the front row of longitudinal secant piles is provided with a front row of pile top lattice deep beam; the top of the rear row of longitudinal secant piles is provided with a rear row of pile top lattice deep beam; the top of the transverse occlusive pile is provided with a transverse pile top lattice deep beam;
the transverse pile top lattice deep beam, the front row of pile top lattice deep beam and the rear row of pile top lattice deep beam form a plane rigid frame structure; a vertical prestressed anchor cable is arranged on a pile body at the vertical connection position of the rear row of longitudinal secant piles and the transverse secant piles; an anchor head is arranged at the transverse connection position of the rear row of longitudinal secant piles and the transverse secant piles, the anchor head consists of an anchor device arranged on a steel backing plate, and the anchor head is arranged on the top surface part of the latticed deep beam at the top of the rear row of longitudinal secant piles; a waist beam is not arranged or arranged in front of the front row of longitudinal secant piles, an inter-pile short anchor rod is correspondingly arranged behind the waist beam, and the waist beam and the inter-pile short anchor rod are locked or welded through an anchor structure; the pile top lattice deep beam plane rigid frame structure, the prestressed anchor cables, the anchor heads, the waist beams, the inter-pile short anchor rods and the longitudinal and transverse secant piles form a bin type supporting space structure of the secant pile underground lattice wall together.
2. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, wherein: the rear row of longitudinal secant piles are formed by pouring concrete in holes at intervals between reinforced concrete piles and plain concrete piles and are arranged along the outer side of the side wall of the foundation pit.
3. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, wherein: the front row of longitudinal secant piles 1 are formed by pouring concrete in holes at intervals between reinforced concrete piles and plain concrete piles and are arranged along the side wall of the foundation pit.
4. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, characterized in that: the front row pile top lattice deep beam, the rear row pile top lattice deep beam and the transverse pile top lattice deep beam are all of a uniform plane rigid frame structure formed by pouring reinforced concrete.
5. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, wherein: the vertical prestressed anchor cable is a pull rod structure which is formed by wrapping cement mortar outside a steel strand and anchoring the cement mortar to a pile end rock-soil body and can apply load.
6. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, wherein: the waist beam is a bearing structure formed by welding profile steels or pouring reinforced concrete.
7. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, characterized in that: the short anchor rod between piles is a bearing structure formed by injecting cement paste into a steel perforated pipe or injecting cement paste into a drilled hole and implanting reinforcing steel bars.
8. The silo type secant pile underground lattice wall foundation pit supporting structure of claim 1, wherein: the construction method of the silo type secant pile underground lattice wall foundation pit supporting structure is as follows:
(1) According to the sequence of slurry preparation, hole forming, reinforcement cage manufacturing and hoisting, and concrete pouring, hole jumping construction is carried out at intervals on a front row of longitudinal secant piles, a rear row of longitudinal secant piles and a transverse secant pile;
(2) Uniformly pouring and constructing the front row of pile top lattice deep beams, the rear row of pile top lattice deep beams and the transverse pile top lattice deep beams;
(3) Constructing a vertical prestressed anchor cable, and applying prestress through an anchor head to improve the anti-overturning capacity of the underground lattice wall foundation pit supporting structure of the bin type secant pile;
(4) And constructing the waist beam and the short anchor rod between the piles layer by layer along with the excavation of the earth and stone till the bottom of the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012141.6A CN115198767A (en) | 2022-08-23 | 2022-08-23 | Underground lattice wall foundation pit supporting structure of bin-type secant pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211012141.6A CN115198767A (en) | 2022-08-23 | 2022-08-23 | Underground lattice wall foundation pit supporting structure of bin-type secant pile |
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| CN115198767A true CN115198767A (en) | 2022-10-18 |
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| CN202211012141.6A Pending CN115198767A (en) | 2022-08-23 | 2022-08-23 | Underground lattice wall foundation pit supporting structure of bin-type secant pile |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774675A (en) * | 2014-01-24 | 2014-05-07 | 中国建筑股份有限公司 | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof |
| CN210163913U (en) * | 2019-06-12 | 2020-03-20 | 华东交通大学 | Asymmetric double-row pile-anchor rod combined supporting structure |
| CN114411762A (en) * | 2022-02-28 | 2022-04-29 | 建研地基基础工程有限责任公司 | Rear-anchor type rigid foundation pit supporting structure and construction method |
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2022
- 2022-08-23 CN CN202211012141.6A patent/CN115198767A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774675A (en) * | 2014-01-24 | 2014-05-07 | 中国建筑股份有限公司 | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof |
| CN210163913U (en) * | 2019-06-12 | 2020-03-20 | 华东交通大学 | Asymmetric double-row pile-anchor rod combined supporting structure |
| CN114411762A (en) * | 2022-02-28 | 2022-04-29 | 建研地基基础工程有限责任公司 | Rear-anchor type rigid foundation pit supporting structure and construction method |
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