CN118166789A - Foundation pit diagonal bracing supporting structure and construction method - Google Patents
Foundation pit diagonal bracing supporting structure and construction method Download PDFInfo
- Publication number
- CN118166789A CN118166789A CN202410457767.0A CN202410457767A CN118166789A CN 118166789 A CN118166789 A CN 118166789A CN 202410457767 A CN202410457767 A CN 202410457767A CN 118166789 A CN118166789 A CN 118166789A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- fixing device
- pile
- composite support
- horizontal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000011162 core material Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Foundations (AREA)
Abstract
The application discloses a foundation pit diagonal bracing supporting structure and a construction method, wherein the foundation pit diagonal bracing supporting structure comprises a foundation pit guard pile, a counterforce device, a diagonal pile composite support and a horizontal bearing force loading device, wherein the foundation pit guard pile is arranged in the vertical direction, the counterforce device is arranged at the top of the foundation pit guard pile and is connected with one end of the horizontal bearing force loading device, and the diagonal pile composite support is connected with the other end of the horizontal bearing force loading device and forms a certain included angle with the foundation pit guard pile; according to the method, after a foundation pit is excavated to the elevation of the bottom, before the inclined pile composite support is dismantled, the horizontal displacement of the top of the inclined pile composite support is monitored under horizontal pressure by means of a horizontal bearing force loading device, so that a load displacement curve of the inclined pile composite support is obtained, the horizontal bearing force of the inclined pile composite support is determined, and finally, the construction quality of each inclined pile composite support is ensured according to a pile test report; meanwhile, the horizontal bearing capacity loading device is flexible to disassemble and can be recycled; the application also discloses a construction method of the foundation pit diagonal bracing supporting structure.
Description
Technical Field
The application relates to the technical field of building foundation pit engineering, in particular to a foundation pit diagonal bracing supporting structure and a construction method.
Background
In the excavation construction of a deep and large foundation pit, the collapse accident of the foundation pit is frequent due to the coupling effect of active soil pressure, dynamic water pressure and the like, and the stability of the foundation pit is an important and difficult work.
The inclined pile composite support can be driven in advance before the foundation pit is excavated, the foundation pit is excavated once, the bottom plate is poured once, and an open working space is formed inside the foundation pit, so that the inclined pile composite support has the advantages of wide working face, high construction speed, short construction period, high cost and the like, and the inclined pile composite support has been increasingly applied in China in recent years.
The inclined pile composite support mainly bears horizontal loads such as water and soil pressure, the water and soil pressure is transmitted to the top beam through the foundation pit guard piles, and then the water and soil pressure is transmitted to the inclined pile composite support through the top beam, so that the requirement on the horizontal bearing capacity of the inclined pile composite support is not negligible. After the foundation pit is excavated to the bottom elevation and the basement foundation construction is completed and the bottom plate is replaced, sampling detection is carried out on the inclined pile composite support through an on-site horizontal bearing capacity test, so that the construction quality of the inclined pile composite support is ensured. However, the conventional pile foundation horizontal bearing capacity test is limited to the condition that the object is a vertical pile, and when the test object is a composite inclined pile support, the worst horizontal bearing condition of the composite inclined pile support in actual engineering cannot be simulated, so that the test result is inaccurate, and the construction quality of the composite inclined pile support cannot be ensured.
In order to overcome the defects in the prior art, a new technical scheme is necessary to be provided.
Disclosure of Invention
The application aims to provide a foundation pit diagonal bracing supporting structure and a construction method, which can simulate the least adverse condition of horizontal loading of a diagonal pile composite support in actual engineering, obtain a characteristic value of horizontal bearing capacity of the diagonal pile composite support through a load displacement curve of the diagonal pile composite support, and ensure construction quality of each diagonal pile composite support.
To achieve the above objective, some embodiments of the first aspect of the present application provide a foundation pit diagonal bracing supporting structure, which includes a foundation pit fender post, a reaction device, a diagonal pile composite support and a horizontal bearing force loading device, wherein the foundation pit fender post is arranged along a vertical direction, the reaction device is arranged at the top of the foundation pit fender post and is connected with one end of the horizontal bearing force loading device, and the diagonal pile composite support is connected with the other end of the horizontal bearing force loading device and forms a certain included angle with the foundation pit fender post.
Further, the horizontal bearing capacity loading device comprises a fixing device and a jack arranged in the fixing device, one end of the fixing device is welded and fixed with the counter force device, and the other end of the fixing device is welded and fixed with the inclined pile composite support.
Further, the fixing device comprises a first fixing device and a second fixing device, a containing part is formed between the first fixing device and the second fixing device, the jack is arranged in the containing part, and the first fixing device is fixedly connected with the second fixing device through a connecting piece.
Further, the first fixing device is welded and fixed with the counterforce device, the second fixing device is welded and fixed with the inclined pile composite support, and the welding end of the second fixing device and the inclined pile composite support is set to be an abutting surface adaptation formed after the inclined surface and the inclined pile composite support incline.
Further, the first supporting plate is welded on the end face of the first fixing device, which is located on the accommodating portion, the second supporting plate is welded on the end face of the second fixing device, which is located on the accommodating portion, and the jack is abutted to and fixed with the first supporting plate and the second supporting plate.
Further, the connecting piece is angle steel with vertical portion and horizontal portion, vertical portion respectively with first fixing device with the lateral surface laminating of second fixing device, horizontal portion respectively with first fixing device with the bottom surface laminating of second fixing device, be equipped with on the horizontal portion with first spout of first fixing device equipment and with the second spout of second fixing device equipment, first bolt passes first spout, second bolt passes the second spout with first fixing device and second fixing device and connecting piece equipment as an organic whole.
Further, the inclined pile composite support comprises a stiff core material and a cement soil pile, the cement soil pile is integrally buried in a foundation pit soil body, the stiff core material comprises a first section inserted into the cement soil pile and a second section located above the foundation pit soil body and connected with the horizontal bearing capacity loading device, and the first section and the second section are of an integrated structure.
Further, the stiff core material is any one of a section steel, a steel pipe and a lattice column.
Further, the jack is a hydraulic jack, the counterforce device is a capping beam for reinforced concrete pouring, and the fixing device is a section steel.
The foundation pit diagonal bracing support construction method of some embodiments of the second aspect of the application comprises the following steps:
step 10: constructing foundation pit guard piles;
Step 20: constructing the inclined pile composite support, and after the installation of the inclined pile composite support is completed and the inclined pile composite support is maintained to the design strength, entering a step 30;
step 30: excavating earthwork to the elevation of the bottom of the capping beam, simultaneously pouring and constructing the capping beam and the capping beam reinforcing pier at the top of the foundation pit guard pile, and entering a step 40 when the capping beam and the capping beam reinforcing pier reach the designed strength;
step 40: excavating earthwork to the elevation of the bottom of the foundation pit;
step 50: dismantling the capping beam reinforcing pier and installing a horizontal bearing force loading device at the dismantling position;
Step 60: applying horizontal pressure to the horizontal bearing capacity loading device in a grading manner, and reading horizontal displacement data of the top of the inclined pile composite support pile under each level of load;
step 70: and when the horizontal displacement of the pile top reaches the horizontal displacement allowable value required by design, terminating loading and recovering the horizontal bearing capacity loading device.
The invention has the following beneficial technical effects: 1) Monitoring the horizontal displacement of the top of the inclined pile composite support under the horizontal pressure to obtain a load displacement curve of the inclined pile composite support, thereby determining the horizontal bearing capacity of the inclined pile composite support, ensuring the construction quality of each inclined pile composite support, along with simple and convenient test operation and accurate and reliable result; 2) The foundation pit guard piles are used as the counter-force piles without arranging additional counter-force piles, so that the supporting system structure is simplified, and the cost is reduced; 3) The horizontal bearing capacity loading device is flexible to detach, can be recycled and has strong applicability.
Drawings
FIG. 1 is a schematic view of a foundation pit diagonal bracing structure in a perspective assembly cross-section according to an embodiment of the present application;
FIG. 2 is a schematic perspective view of a horizontal loading device according to an embodiment of the present application;
FIG. 3 is a schematic view illustrating another perspective view of a horizontal load-bearing force loading device according to an embodiment of the present application;
FIG. 4 is a schematic view of a horizontal load bearing apparatus partially assembled according to an embodiment of the present application;
FIG. 5 is a schematic perspective sectional view of a horizontal load bearing apparatus according to an embodiment of the present application;
FIG. 6 is a schematic view of another angular assembly of a horizontal load bearing apparatus according to an embodiment of the present application.
Reference numerals:
Foundation pit diagonal bracing supporting structure 100
Foundation pit fender pile 1
Reaction force device 2
Inclined pile composite support 3
Stiff core 30 cement soil pile 31
Horizontal bearing capacity loading device 4
First fixing device 40 first support plate 401 second fixing device 41
Jack 43 of accommodating part 42 of second supporting plate 411 of inclined plane 410
First runner 442 of vertical portion 440 and horizontal portion 441 of connecting member 44
Second runner 443 first bolt 45 second bolt 46
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus consistent with aspects of the application as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
Referring to fig. 1 to 6, a foundation pit diagonal bracing supporting structure 100 includes a foundation pit fender pile 1, a reaction device 2, a diagonal pile composite support 3 and a horizontal bearing force loading device 4. The foundation pit guard pile 1 is arranged along the vertical direction, and the counterforce device 2 is arranged at the top of the foundation pit guard pile and is connected with one end of the horizontal bearing force loading device; the inclined pile composite support 3 is connected with the other end of the horizontal bearing force loading device 4 and forms a certain included angle with the foundation pit fender pile 1. The included angle is an acute angle.
In one embodiment, the batter pile composite support 3 comprises a stiff core 30 and a cemented soil pile 31. The cement soil pile 31 is integrally buried in the foundation pit soil body, the stiff core material 30 comprises a first section inserted into the cement soil pile 31 and a second section located above the foundation pit soil body and connected with the horizontal bearing capacity loading device 4, and the first section and the second section are of an integrated structure. The second section is exposed to the air and the radial dimension of the stiff core material 30 is smaller than the radial dimension of the soil cement pile 31. The stiff core material 30 may be any of a section steel, a steel pipe, and a lattice column. The construction process of the inclined pile composite support 3 is to construct the cement soil pile first and then insert the stiffening core material.
In one embodiment, the horizontal load-bearing force loading device 4 comprises a fixing device and a jack 43 arranged in the fixing device. One end of the fixing device is welded and fixed with the counterforce device 2, and the other end of the fixing device is welded and fixed with the inclined pile composite support 3. In one embodiment, the jack 43 is a hydraulic jack, the reaction device is a capping beam for reinforced concrete casting, and the fixing device is a section steel. The fixing device is connected with the inclined pile composite support top and the top beam into a whole. According to the application, the capping beams at the tops of the foundation pit guard piles are connected together, so that the pressure is shared to the contact surface of each foundation pit guard pile and the capping beams, the pressure intensity of the foundation pit guard piles is reduced, and the foundation pit guard piles are prevented from being deformed greatly under the action of the pressure. According to the foundation pit guard pile, the foundation pit guard pile is used as the counter-force pile, and an additional counter-force pile is not required, so that the cost is reduced.
Specifically, the fixing device includes a first fixing device 40 and a second fixing device 41, where the first fixing device 40 and the second fixing device 41 have the same center line and are made of the same material. The first fixing device 40 and the second fixing device 41 form a receiving portion 42 therebetween. The jack 43 is disposed in the accommodating portion 42. The first fixing device 40 and the second fixing device 41 are fixedly connected through a connecting piece 44. In one embodiment, the connecting member 44 is an angle steel having a vertical portion 440 and a horizontal portion 441. The vertical portion 440 is respectively attached to the outer side surfaces of the first fixing device 40 and the second fixing device 41; the horizontal portion 441 is respectively attached to the bottom surface of the first fixing device 40 and the bottom surface of the second fixing device 41. The angle steel is attached to the outer side face and the bottom face of the fixing device, so that a guiding effect can be provided for the horizontal loading process. The horizontal portion 441 is provided with a first sliding slot 442 assembled with the first fixing device 40 and a second sliding slot 443 assembled with the second fixing device 41. The first sliding groove 442 and the second sliding groove 443 are disposed away from the corresponding position of the accommodating portion 42 to enhance the overall strength of the connecting member 44, and the angle steel also supports the jack 43 located in the accommodating portion 42. The bottom plates of the first fixing device and the second fixing device are respectively provided with assembly holes (not numbered) corresponding to the first sliding grooves and the second sliding grooves. In one embodiment, the first bolt 45 passes through the first sliding slot 442 to assemble the first fixing device 40 and the connecting piece 44 into a whole; the second bolt 46 passes through the second sliding slot 443 to assemble the second fixing device 41 and the connecting piece 44 as one body. The first sliding groove 442 and the second sliding groove 443 can provide a certain horizontal movement space between the first fixing device 40 and the second fixing device 41, so as to avoid the consumption of pressure by the connecting piece 44, i.e. angle steel, in the horizontal loading process; in addition, by means of the angle connection, a constraint can be created between the first fixing means 40 and the second fixing means 41, avoiding the occurrence of out-of-plane instability of said fixing means with an increase in the soil pressure when pressure is applied. The first bolt 45 and the second bolt 46 are high strength bolts to ensure the safety of the support structure.
The end surface of the first fixing device 40 located at the accommodating portion 42 is welded with a first supporting plate 401, and the end surface of the second fixing device 41 located at the accommodating portion 42 is welded with a second supporting plate 411. The jack 43 is fixed in contact with the first support plate 401 and the second support plate 411. The first support plate 401 may protect the end surface of the first fixing device 40 near the accommodating portion 42, and the second support plate 411 may protect the end surface of the second fixing device 41 near the accommodating portion 42, while ensuring that the pressure applied by the horizontal bearing force loading device 4 can smoothly act on the fixing device to obtain a precise measurement result.
The first fixing device 40 is welded and fixed with the capping beam. The second fixing device 41 is welded and fixed with the inclined pile composite support 3. The welding ends of the second fixing device 41 and the inclined pile composite support 3 are provided with inclined planes 410, and the inclined planes are matched with the supporting surfaces formed by the inclined planes after the construction of the inclined pile composite support 3. The inclined surface 410 of the second fixing device 41 is formed by cutting, and is attached to the top of the inclined pile composite support 3, and the inclined surface 410 is used for bearing force when the horizontal bearing force loading device 4 is applied with force. The foundation pit diagonal bracing supporting construction method of the foundation pit diagonal bracing supporting structure in the embodiment of the application comprises the following steps:
step 10: constructing foundation pit guard piles;
Step 20: constructing the inclined pile composite support, and after the installation of the inclined pile composite support is completed and the inclined pile composite support is maintained to the design strength, entering a step 30;
step 30: excavating earthwork to the elevation of the bottom of the capping beam, simultaneously pouring and constructing the capping beam and the capping beam reinforcing pier at the top of the foundation pit guard pile, and entering a step 40 when the capping beam and the capping beam reinforcing pier reach the designed strength;
step 40: excavating earthwork to the elevation of the bottom of the foundation pit;
step 50: dismantling the capping beam reinforcing pier and installing a horizontal bearing force loading device at the dismantling position;
Step 60: applying horizontal pressure to the horizontal bearing capacity loading device in a grading manner, and reading horizontal displacement data of the top of the inclined pile composite support pile under each level of load;
step 70: and when the horizontal displacement of the pile top reaches the horizontal displacement allowable value required by design, terminating loading and recovering the horizontal bearing capacity loading device.
Specifically, in step 50, the horizontal bearing force loading device and the inclined pile composite support and the top beam are welded and fixed respectively by using welding equipment, and in step 70, the welding position of the horizontal bearing force loading device and the inclined pile composite support and the top beam is cut by using a gas cutting gun, so that the reutilization of the horizontal bearing force loading device is realized. The capping beam in this embodiment is a reaction force device.
The scheme provided by the embodiment of the application can monitor the horizontal displacement of the top of the inclined pile composite support under horizontal pressure by means of the horizontal bearing capacity loading device to obtain a horizontal load displacement curve of the inclined pile composite support, so as to obtain a horizontal bearing capacity characteristic value of the inclined pile composite support; the loading experiment simulates the least adverse condition of horizontal loading of the inclined pile composite support in actual engineering, so that the horizontal bearing capacity of the inclined pile composite support is determined, the test result is accurate and reliable, and the construction quality of each inclined pile composite support is ensured.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (10)
1. The utility model provides a foundation ditch bracing supporting construction which characterized in that: the foundation pit pile comprises a foundation pit guard pile, a counter force device, a diagonal pile composite support and a horizontal bearing capacity loading device, wherein the foundation pit guard pile is arranged in the vertical direction, the counter force device is arranged at the top of the foundation pit guard pile and is connected with one end of the horizontal bearing capacity loading device, and the diagonal pile composite support is connected with the other end of the horizontal bearing capacity loading device and forms a certain included angle with the foundation pit guard pile.
2. The foundation pit diagonal bracing supporting structure according to claim 1, wherein: the horizontal bearing force loading device comprises a fixing device and a jack arranged in the fixing device, one end of the fixing device is welded and fixed with the counter force device, and the other end of the fixing device is welded and fixed with the inclined pile composite support.
3. The foundation pit diagonal bracing supporting structure according to claim 2, wherein: the fixing device comprises a first fixing device and a second fixing device, a containing part is formed between the first fixing device and the second fixing device, the jack is arranged in the containing part, and the first fixing device is fixedly connected with the second fixing device through a connecting piece.
4. A foundation pit bracing support structure according to claim 3, wherein: the first fixing device is welded and fixed with the counterforce device, the second fixing device is welded and fixed with the inclined pile composite support, and the welding end of the second fixing device and the inclined pile composite support is set to be matched with an abutting surface formed after the inclined surface and the inclined pile composite support incline.
5. A foundation pit bracing support structure according to claim 3, wherein: the first fixing device is located the terminal surface welding of holding portion has first backup pad, the terminal surface welding that the second fixing device is located the holding portion has the second backup pad, the jack with first backup pad reaches the second backup pad butt is fixed.
6. The foundation pit diagonal bracing support structure according to claim 5, wherein: the connecting piece is angle steel with vertical portion and horizontal portion, vertical portion respectively with first fixing device with the lateral surface laminating of second fixing device, horizontal portion respectively with first fixing device with the bottom surface laminating of second fixing device, be equipped with on the horizontal portion with first spout of first fixing device equipment and with the second spout of second fixing device equipment, first bolt passes first spout, second bolt passes the second spout with first fixing device and second fixing device and connecting piece equipment as an organic whole.
7. The foundation pit diagonal bracing support structure according to any one of claims 1 to 6, wherein: the inclined pile composite support comprises a stiff core material and a cement soil pile, wherein the cement soil pile is integrally buried in a foundation pit soil body, the stiff core material comprises a first section inserted into the cement soil pile and a second section located above the foundation pit soil body and connected with the horizontal bearing capacity loading device, and the first section and the second section are of an integrated structure.
8. The foundation pit diagonal bracing supporting structure according to claim 7, wherein: the stiff core material is any one of a section steel, a steel pipe and a lattice column.
9. The foundation pit diagonal bracing support structure according to any one of claims 2 to 6, wherein: the jack is a hydraulic jack, the counterforce device is a capping beam for reinforced concrete pouring, and the fixing device is profile steel.
10. A construction method adopting the foundation pit diagonal bracing supporting structure according to claim 1, which is characterized in that: the method comprises the following steps:
step 10: constructing foundation pit guard piles;
Step 20: constructing the inclined pile composite support, and after the installation of the inclined pile composite support is completed and the inclined pile composite support is maintained to the design strength, entering a step 30;
step 30: excavating earthwork to the elevation of the bottom of the capping beam, simultaneously pouring and constructing the capping beam and the capping beam reinforcing pier at the top of the foundation pit guard pile, and entering a step 40 when the capping beam and the capping beam reinforcing pier reach the designed strength;
step 40: excavating earthwork to the elevation of the bottom of the foundation pit;
step 50: dismantling the capping beam reinforcing pier and installing a horizontal bearing force loading device at the dismantling position;
Step 60: applying horizontal pressure to the horizontal bearing capacity loading device in a grading manner, and reading horizontal displacement data of the top of the inclined pile composite support pile under each level of load;
step 70: and when the horizontal displacement of the pile top reaches the horizontal displacement allowable value required by design, terminating loading and recovering the horizontal bearing capacity loading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457767.0A CN118166789A (en) | 2024-04-16 | 2024-04-16 | Foundation pit diagonal bracing supporting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410457767.0A CN118166789A (en) | 2024-04-16 | 2024-04-16 | Foundation pit diagonal bracing supporting structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118166789A true CN118166789A (en) | 2024-06-11 |
Family
ID=91360385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410457767.0A Pending CN118166789A (en) | 2024-04-16 | 2024-04-16 | Foundation pit diagonal bracing supporting structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118166789A (en) |
-
2024
- 2024-04-16 CN CN202410457767.0A patent/CN118166789A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107975075B (en) | Construction process for existing load-bearing engineering foundation pile detection structure measures | |
| CN107130611B (en) | Design and construction method of flexible composite anti-seepage assembled recoverable round-section row pile supporting structure | |
| CN104711931B (en) | Temporary underwater pier manufacturing, assembling and disassembling method suitable for bridge erection | |
| CN110965558A (en) | Large-span long and narrow foundation pit supporting method and supporting structure | |
| CN213062136U (en) | Independent foundation underpinning system for storey-adding building | |
| JP3395944B2 (en) | Underwater formwork method | |
| CN111270685A (en) | Recyclable support truss, foundation pit support system and subway station construction method | |
| CN118166789A (en) | Foundation pit diagonal bracing supporting structure and construction method | |
| CN209975503U (en) | Static pressing pile of assembled fender pile | |
| CN213296364U (en) | Connecting piece and supporting beam steel bar assembly for cast-in-place reinforced concrete foundation pit inner support sectional construction | |
| CN211368731U (en) | A foundation ditch construction high strength supporting beam for construction | |
| CN108797586A (en) | A kind of construction method of anchor jacked pile | |
| CN111622091B (en) | Stress test method for prefabricated bridge pier | |
| CN212316935U (en) | Disassembly-free support rod piece and foundation pit supporting system | |
| CN114250784A (en) | Foundation pit enclosure system combining piles with inclined piles in support-first and excavation-later construction method | |
| CN219586706U (en) | Foundation reinforcement embedded pile for building construction | |
| CN218291919U (en) | Novel cover digs reverse construction method steel-pipe column center secondary and rectifies and fix device | |
| CN220927778U (en) | Large-diameter pile foundation operation platform for deep water karst geology | |
| CN219825340U (en) | Raft steel bar support frame | |
| CN220953451U (en) | Embedded assembled shaped steel waist rail | |
| CN218148399U (en) | Steel structure assembled supporting device for foundation pit emergency | |
| CN212316936U (en) | Recycled support truss and foundation pit supporting system | |
| CN219732023U (en) | Fender pile and steel diagonal bracing fender structure | |
| CN217460609U (en) | Horizontal steel supporting structure of reverse construction method | |
| CN216947926U (en) | Rock matter riverbed deep water steel trestle consolidates prevents structure of toppling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |