CN114164838B - Supporting device for foundation pit - Google Patents
Supporting device for foundation pit Download PDFInfo
- Publication number
- CN114164838B CN114164838B CN202111488440.2A CN202111488440A CN114164838B CN 114164838 B CN114164838 B CN 114164838B CN 202111488440 A CN202111488440 A CN 202111488440A CN 114164838 B CN114164838 B CN 114164838B
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- foundation pit
- assembly
- shaft rod
- pushing
- elastic
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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
- E02D2200/00—Geometrical or physical properties
- E02D2200/14—Geometrical or physical properties resilient or elastic
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1671—Shapes helical or spiral
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
- E02D2300/0034—Steel; Iron in wire form
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a supporting device for a foundation pit, which comprises a shaft rod and an elastic supporting mechanism, wherein the elastic supporting mechanism comprises an olive-shaped pushing elastic component, a supporting block fixed with the end part of the pushing elastic component and a compacting component for exerting force on the pushing elastic component so as to push the supporting block to the side surface of the foundation pit, the shaft rod is arranged along the central axis of the pushing elastic component, and two ends of the shaft rod are respectively connected with the supporting block and the end part of the pushing elastic component through pulley components; the pressing assembly comprises a chest expander and a steel rope, the steel rope is wound on the outer wall of the pushing elastic assembly, one end of the steel rope is fixed on one end of the pushing elastic assembly, the other end of the steel rope is inserted in the chest expander, and the chest expander is fixed on the other end of the pushing elastic assembly; the invention has the advantages of single support, adjustable pre-applied axial force at any time and any place, accurate and reliable axial force value adjustment, good axial force value balance of force application at each support position and capability of playing the role of a support system to the greatest extent.
Description
Technical Field
The invention belongs to the technical field of civil engineering and urban rail transit building construction, and particularly relates to a supporting device for a foundation pit.
Background
With the rapid development of national infrastructure construction, engineering layers such as urban high-rise buildings, rail transit underground stations and the like are endless; the building construction is characterized in that a foundation pit support structure with a considerable depth is required to be built and excavated so as to facilitate the construction of an underground structure; because the depth of the foundation pit is usually between ten meters and tens of meters, in order to ensure the stability of the stratum during the excavation of the foundation pit, foundation pit enclosure structures such as underground continuous walls or bored piles and the like are usually arranged, a crown beam and a concrete supporting structure are arranged at the top of the enclosure structures, and one layer to several layers of steel or concrete supporting structures are arranged in the foundation pit; for subway station foundation pit excavation construction, the number of steel support structures occupies the absolute dominant position of the support structures, so that the rapid installation of the steel support and timely and effective application of supporting force are one of important factors for guaranteeing the construction stability of the whole foundation pit.
The existing foundation pit bracing and supporting system generally comprises underground continuous walls or guard piles arranged along the peripheral edges of a foundation pit and internal supports arranged between crown beams or purlin beams; the foundation pit inner support generally comprises a steel structure support piece with a movable end of a movable joint, and the steel structure support piece applies a pre-axial force on the axis position of the movable end through a jack arranged in the movable joint, so that a support guarantee system for the foundation pit is formed, and deformation of the foundation pit is controlled. The steel structure support piece in the prior art cannot adjust and re-add the pre-added axial force according to the axial force design value at any time along with the change of the foundation pit excavation working condition process, and the change value of the pre-added axial force of each support position is also unbalanced, so that the overall stress performance of the support system in the foundation pit excavation process cannot completely reach the technical level required by the standard, the deformation of the enclosure structure is extremely easy to cause when the foundation pit is excavated, and the risk of collapse of the foundation pit is locally induced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a supporting device for a foundation pit, which is suitable for an underground station foundation pit of urban rail transit, and has the advantages of single support, capability of adjusting the pre-applied axial force at any time and any place, accurate and reliable axial force value adjustment, good axial force value balance of force application at each supporting position and capability of playing the role of a supporting system to the greatest extent.
The invention aims at solving the problems by the following technical scheme that the supporting device for the foundation pit comprises a shaft rod and an elastic supporting mechanism, wherein the elastic supporting mechanism comprises an olive-shaped pushing elastic component, a supporting block fixed with the end part of the pushing elastic component and a compacting component for exerting force on the pushing elastic component so as to push the supporting block to the side surface of the foundation pit, the shaft rod is arranged along the central axis of the pushing elastic component, and two ends of the shaft rod are respectively connected with the supporting block and the end part of the pushing elastic component through pulley components; the pressing assembly comprises a chest expander and a steel rope, the steel rope is wound on the outer wall of the pushing elastic assembly, one end of the steel rope is fixed on one end of the pushing elastic assembly, the other end of the steel rope is inserted in the chest expander, and the chest expander is fixed on the other end of the pushing elastic assembly.
According to the invention, the olive-shaped pushing elastic component is arranged, the steel rope is pulled to further compress the compressing component and radially compress the pushing elastic component towards the shaft rod, so that the pushing elastic component slides along the axial direction of the shaft rod and is slid through the pulley component, the supporting block is pushed towards the side surface of the foundation pit, the supporting of the foundation pit is formed, and the safety of excavation of the foundation pit is ensured; and through the cooperation of chest expander and steel cable, in the foundation ditch continuous excavation in-process, strutting arrangement can be timely and accurate reach the best laminating support with the opposite underground diaphragm wall of both sides or enclose between the purlin roof beam to the effectual effect efficiency who improves the foundation ditch internal support has the regulation in time, the degree of accuracy of regulation is high and the single support is adjustable in advance in anytime and anywhere, realizes that the axial force numerical value is adjusted accurately reliably and the axial force numerical value equilibrium of every supporting position application is good, can exert the advantage of supporting the system effect furthest.
Preferably, the pushing elastic component comprises a plurality of arched elastic steel sheets and fixing rings, wherein the arched elastic steel sheets are positioned at the outer side of the shaft rod, two ends of the arched elastic steel sheets are respectively fixed on the two fixing rings, and the two fixing rings are respectively sleeved on two ends of the shaft rod; through the arrangement of the arched elastic steel sheets, the pushing elastic assembly is more rapid and convenient in the compression, resetting and expanding processes of the pushing elastic assembly along the two sides of the shaft lever.
Preferably, the arched elastic steel sheets are annularly arranged around the axial outer side of the shaft rod, and the adjacent arched elastic steel sheets are distributed at equal intervals; through the distribution of the arched elastic steel sheets, the pressing force and the propping force are more stable in the compression, resetting and propping up of the propping elastic component along the two sides of the shaft rod, so that the supporting device is higher in adjusting accuracy and better in force application balance in the process of attaching and supporting with the foundation pit.
Preferably, a through hole is formed in the center of the supporting block, the supporting block is sleeved on the end part of the shaft rod through the through hole by utilizing a pulley assembly, and the supporting block is respectively arranged at two ends of the shaft rod and is respectively fixed on the fixing ring; therefore, the supporting blocks can be limited in the radial direction of the shaft rod, so that the supporting blocks can slide along the direction of the shaft rod and can be well attached to and supported by the underground continuous wall or the enclosing purlin beam of the foundation pit.
Preferably, the steel ropes are spirally wound on the outer sides of the plurality of arched elastic steel sheets, and the thread pitches of the steel ropes wound on the two ends of the arched elastic steel sheets are larger than those of the steel ropes wound on the middle section of the arched elastic steel sheets; therefore, when the steel rope is tensioned and the arched elastic steel sheet is compressed towards the radial direction of the shaft rod, the force application is more convenient, and the arched elastic steel sheet is compressed and deformed more quickly.
Preferably, a groove for the steel rope to slide along the length direction of the arched elastic steel sheet is arranged on the surface of the arched elastic steel sheet contacted with the steel rope; therefore, the steel rope can slide in the groove and is not easy to slip in the tensioning or loosening process, and a layer of lubricating oil is coated in the groove, so that the friction force between the steel rope and the groove can be greatly reduced.
Preferably, the ratio of the rise H to the elongation L of the pushing elastic component is (10-12):1, and the displacement of the pushing elastic component in the expanding direction can be ensured through the matching of the chest expander and the steel rope.
Preferably, the pulley assembly comprises a first pulley assembly and a second pulley assembly, the first pulley assembly is arranged between the shaft rod and the supporting block, and the second pulley assembly is arranged between the shaft rod and the end part of the pushing elastic assembly; therefore, in the process of expanding or resetting the pushing elastic component, the supporting block and the pushing elastic component can smoothly slide on the shaft lever.
Preferably, the first pulley assembly comprises bearing wheels and sliding grooves arranged in the supporting blocks, the bearing wheels are provided with a plurality of mounting grooves which are connected in the shaft rod, the bearing wheels are fixed at two ends of the shaft rod and distributed at equal intervals along the circumferential direction of the shaft rod, the mounting grooves and the sliding grooves are distributed in one-to-one correspondence, and the outer diameter surfaces of the bearing wheels are in contact with the sliding grooves; therefore, the supporting block can slide smoothly along the axial direction of the shaft rod, so that the adjustment is more timely, and the force application balance is better.
Preferably, the second pulley assembly comprises a plurality of pulleys and chute blocks, the pulleys are connected to the inner wall of the end part of the pushing elastic assembly through brackets and distributed at equal intervals, the chute blocks are provided with a plurality of pulleys and mounted on the circumferential wall of the shaft rod and distributed at equal intervals, and the pulleys and the chute blocks are distributed in a one-to-one correspondence; therefore, the end part of the pushing elastic component can slide along the axial direction of the shaft rod smoothly, and the adjustment is more timely and the force application balance is better.
Drawings
Fig. 1 is a schematic perspective view of a supporting device according to the present invention.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at B of fig. 1.
The reference numerals in the drawings are respectively: 1. a shaft lever; 2. an elastic supporting mechanism; 3. a support block; 4. a compression assembly; 5. pushing the elastic component; 6. a pulley assembly; 31. a through hole; 41. a chest expander; 42. a steel rope; 51. an arcuate elastic steel sheet; 52. a fixing ring; 53. a groove; 61. a first pulley assembly; 62. a second pulley assembly; 61-1, bearing wheels; 61-2, a chute; 61-3, mounting slots; 62-1, pulleys; 62-2, chute blocks; 62-3, a bracket.
Detailed Description
The invention will be described in detail below with reference to the attached drawings: as shown in fig. 1, the invention comprises a shaft lever 1, an elastic supporting mechanism 2, wherein the elastic supporting mechanism 2 comprises an olive-shaped pushing elastic component 5, a supporting block 3 fixed with the end part of the pushing elastic component 5 and a compacting component 4 for exerting force on the pushing elastic component 5 to push the supporting block 3 to the side surface of a foundation pit, and the olive-shaped pushing elastic component 5 can facilitate the opening and resetting of the pushing elastic component 5, and can further ensure that the force exerting balance of the pushing elastic component 5 in the opening process is better; the shaft lever 1 is arranged along the central axis of the pushing elastic component 5, and two ends of the shaft lever 1 are respectively connected to the supporting block 3 and the end part of the pushing elastic component 5 through the pulley component 6; the compressing assembly 4 comprises a chest expander 41 and a steel rope 42, the chest expander 41 adopts a penetrating jack, the steel rope 42 is wound on the outer wall of the pushing elastic assembly 5, one end of the steel rope 42 is fixed on one end of the pushing elastic assembly 5, namely fixed on the fixed ring 52, the other end of the steel rope 42 is inserted into the chest expander 41, and the chest expander 41 is fixed on the other end of the pushing elastic assembly 5, namely fixed on the end part of the arched elastic steel sheet; the olive-shaped pushing elastic component is arranged, and the pushing elastic component is radially compressed towards the shaft rod through the compression component, so that the pushing elastic component slides along the axial direction of the shaft rod and is slid through the pulley component, the supporting block is pushed towards the side surface of the foundation pit, the supporting of the foundation pit is formed, and the safety of excavation of the foundation pit is ensured; and through the cooperation of chest expander and steel cable, in the foundation ditch continuous excavation in-process, strutting arrangement can be timely and accurate with the underground diaphragm wall of relative both sides or enclose between the purlin roof beam laminating support to the effectual overall stability who improves the foundation ditch internal support has the advantage that in time, the regulation degree of accuracy is high and the application of force equilibrium is good.
The pushing elastic assembly 5 comprises eight arched elastic steel sheets 51 and a fixed ring 52, wherein eight arched elastic steel sheets 51 are arranged around the axial outer side of the shaft rod 1, and the adjacent arched elastic steel sheets 51 are distributed at equal intervals; the two ends of the arched elastic steel sheets 51 are respectively fixed on the two fixing rings 52, the fixing rings 52 are octagonal, each arched elastic steel sheet 51 is respectively fixed on one side of the fixing ring 52 in a welding mode, and the two fixing rings 52 are respectively sleeved on the two ends of the shaft rod 1 and realize radial limit through the second pulley component 62; through the distribution of the arched elastic steel sheets, the pressing force and the propping force are more stable in the compression, resetting and propping up of the propping elastic component along the two sides of the shaft rod, so that the supporting device is higher in adjusting accuracy and better in force application balance in the process of attaching and supporting with the foundation pit.
The center of the supporting block 3 is provided with a through hole 31, the supporting block 3 is sleeved on the end part of the shaft rod 1 through the pulley component 6, the supporting block 3 is respectively arranged at two ends of the shaft rod 1 and is respectively fixed on the fixed ring 52, the supporting block 3 is used for tightly pushing the side surface of the foundation pit, the supporting block 3 slides through the supporting of the pushing elastic component 5, the displacement of the two supporting blocks 3 along the supporting state of the shaft rod 1 is 5-6 cm, the supporting effect on the underground continuous wall or the enclosing purlin beam of the foundation pit is probably not achieved due to the fact that the supporting effect on the underground continuous wall or the enclosing purlin beam of the foundation pit is sometimes larger, namely, the supporting block 3 and the underground continuous wall or the enclosing purlin beam of the foundation pit cannot be tightly pushed, then one supporting block 3 can be fixed on one side of the supporting block 3 or the existing supporting block 3 is thickened, and the supporting block 3 is more flexible through the cooperation between the supporting block 3 and the shaft rod 1, so that the foundation pit with the force application and the foundation pit excavation deformation of different supporting structures can be more suitable.
The steel rope 42 is spirally wound on the outer sides of the plurality of arched elastic steel sheets 51, the steel rope pitches wound on the two ends of the arched elastic steel sheets 51 are larger than those wound on the middle section of the arched elastic steel sheets 51, namely, the ratio of the steel rope pitches wound on the two ends to those wound on the middle section is 2:1, the steel rope 42 is wound on the arched elastic steel sheets 51 and is divided into three equally divided sections, when the steel rope 42 is tensioned and the arched elastic steel sheets 51 are compressed in the radial direction of the shaft rod, the tension and the force application of the steel rope are ensured to be more convenient, so that the compression deformation of the arched elastic steel sheets is quicker, the stress of the arched elastic steel sheets 51 on the two ends is more uniform, and the deformation of the arched elastic steel sheets 51 is avoided.
The surface of the arched elastic steel sheet 51 contacted with the steel rope 42 is provided with a groove 53 for the steel rope 42 to slide along the length direction of the arched elastic steel sheet 51, as shown in figure 3, the width of the groove 53 is 8-12 cm, so that the steel rope can slide in the groove and is not easy to slip all the time when the elastic component is pushed under a compression state or a reset state in the tensioning or releasing process of the steel rope, and a layer of lubricating oil is coated in the groove, so that the friction force between the steel rope and the groove can be greatly reduced.
The ratio of the rise H of the pushing elastic component 5 to the elongation L is (10-12) to 1, and the elongation L is the pushing displacement; by the cooperation of the chest expander 41 and the steel rope 42, the displacement of the pushing elastic component 5 in the expanding direction can be ensured through the proportional relation.
As shown in fig. 1 and 2, the pulley assembly 6 includes a first pulley assembly 61 and a second pulley assembly 62, the first pulley assembly 61 is disposed between the shaft 1 and the support block 3, and the second pulley assembly 62 is disposed between the shaft 1 and an end of the urging elastic assembly 5.
The first pulley assembly 61 comprises a bearing wheel 61-1 and a sliding groove 61-2 arranged in the supporting block 3, the bearing wheel 61-1 is provided with four mounting grooves 61-3 which are respectively connected in the shaft rod 1 in a compressible and resettable manner, the bearing wheel is fixed at two ends of the shaft rod 1 and distributed at equal intervals along the circumferential direction of the shaft rod 1, the mounting grooves 61-3 are distributed in one-to-one correspondence with the sliding groove 61-2, the outer diameter surface of the bearing wheel 61-1 is contacted with the sliding groove 61-2, the bearing wheel 61-1 is positioned in the bearing wheel 61-1 and the sliding groove 61-3 through the matching of the sliding groove 61-2 and the mounting groove 61-3, and the length of the sliding groove 61-2 is 4 cm to 8cm; the second pulley assembly 62 comprises eight pulleys 62-1 and chute blocks 62-2, wherein the pulleys 62-1 are connected to the inner wall of the octagonal fixed ring 52 through brackets 62-3 and distributed at equal intervals, the brackets 62-3 have the function of compression and resetting, the chute blocks 62-2 are provided with eight chute blocks and mounted on the circumferential wall of the shaft rod 1 and distributed at equal intervals, the pulleys 62-1 and the chute blocks 62-2 are distributed in a one-to-one correspondence, the radial end surfaces of the pulleys 62-1 are abutted against the chute blocks 62-2, and the length of a chute on the chute block 62-2 is 4-8 cm; therefore, in the process of expanding or resetting the pushing elastic component, the supporting block and the pushing elastic component can smoothly slide on the shaft rod, so that the adjustment is more timely, and the force application balance is better.
The working principle of the invention is as follows: when the supporting device is not tightly contacted with the side surface of the foundation pit and deforms the wall of the foundation pit, the steel rope 42 is tensioned through the chest expander 41, so that the arched elastic steel sheet 51 is compressed towards the radial direction of the shaft rod 1, namely the sagittal height H is continuously reduced, and then the arched elastic steel sheet 51 is spread towards two sides along the axial direction of the shaft rod 1, namely the elongation is continuously increased, so that the supporting block 3 is tightly contacted with the side surface of the foundation pit to block the deformation of the wall.
The present invention is not limited to the above embodiments, and any modification of the structural design provided by the present invention, regardless of any changes in shape or material composition, should be considered as being within the scope of the present invention.
Claims (9)
1. The utility model provides a strutting arrangement for foundation ditch, includes axostylus axostyle (1), elastic support mechanism (2), its characterized in that: the elastic supporting mechanism (2) comprises an olive-shaped pushing elastic component (5), a supporting block (3) fixed with the end part of the pushing elastic component (5) and a compacting component (4) used for exerting force on the pushing elastic component (5) so as to push the supporting block (3) to the side surface of the foundation pit, the shaft rod (1) is arranged along the central axis of the pushing elastic component (5), and two ends of the shaft rod (1) are respectively connected to the supporting block (3) and the end part of the pushing elastic component (5) through pulley components (6); the pressing assembly (4) comprises a chest expander (41) and a steel rope (42), the steel rope (42) is wound on the outer wall of the pushing elastic assembly (5), one end of the steel rope (42) is fixed on one end of the pushing elastic assembly (5), the other end of the steel rope (42) is inserted in the chest expander (41), and the chest expander (41) is fixed on the other end of the pushing elastic assembly (5); the pushing elastic assembly (5) comprises a plurality of arched elastic steel sheets (51) and fixing rings (52), the arched elastic steel sheets (51) are arranged on the outer sides of the shaft rods (1), two ends of the arched elastic steel sheets (51) are respectively fixed on the two fixing rings (52), and the two fixing rings (52) are respectively sleeved on two end parts of the shaft rods (1).
2. The foundation pit supporting device according to claim 1, wherein: the arched elastic steel sheets (51) are annularly arranged around the axial outer side of the shaft rod (1), and the adjacent arched elastic steel sheets (51) are distributed at equal intervals.
3. The foundation pit supporting device according to claim 1, wherein: the center of the supporting block (3) is provided with a through hole (31), the supporting block (3) is sleeved on the end part of the shaft rod (1) through the through hole (31) by utilizing the pulley component (6), and the supporting block (3) is respectively provided with one at two ends of the shaft rod (1) and is respectively fixed on the fixed ring (52).
4. The foundation pit supporting device according to claim 1, wherein: the steel ropes (42) are spirally wound on the outer sides of the arched elastic steel sheets (51), and the steel rope pitches wound on the two ends of the arched elastic steel sheets (51) are larger than the steel rope pitches wound on the middle section of the arched elastic steel sheets (51).
5. The foundation pit supporting device according to claim 4, wherein: the surface of the arched elastic steel sheet (51) contacted with the steel rope (42) is provided with a groove (53) for the steel rope (42) to slide along the length direction of the arched elastic steel sheet (51).
6. The foundation pit supporting device according to claim 1, wherein: the ratio of the rise H of the pushing elastic component (5) to the elongation is (10-12) to 1.
7. The foundation pit supporting device according to claim 1, wherein: the pulley assembly (6) comprises a first pulley assembly (61) and a second pulley assembly (62), the first pulley assembly (61) is arranged between the shaft rod (1) and the supporting block (3), and the second pulley assembly (62) is arranged between the shaft rod (1) and the end part of the pushing elastic assembly (5).
8. The foundation pit supporting device according to claim 7, wherein: the first pulley assembly (61) comprises bearing wheels (61-1) and sliding grooves (61-2) arranged in the supporting blocks (3), the bearing wheels (61-1) are provided with a plurality of mounting grooves (61-3) which are connected with the shaft rods (1), the bearing wheels are fixed at two ends of the shaft rods (1) and distributed at equal intervals along the circumferential direction of the shaft rods (1), the mounting grooves (61-3) are distributed in one-to-one correspondence with the sliding grooves (61-2), and the outer diameter surfaces of the bearing wheels (61-1) are in contact with the sliding grooves (61-2).
9. The foundation pit supporting device according to claim 7, wherein: the second pulley assembly (62) comprises a pulley (62-1) and a sliding groove block (62-2), the pulley (62-1) is provided with a plurality of sliding groove blocks (62-2), the sliding groove blocks are connected to the inner wall of the end part of the pushing elastic assembly (5) through a bracket (62-3) and distributed at equal intervals, the sliding groove blocks (62-2) are provided with a plurality of sliding groove blocks and are mounted on the circumferential wall of the shaft rod (1) and distributed at equal intervals, and the pulley (62-1) and the sliding groove blocks (62-2) are distributed in one-to-one correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488440.2A CN114164838B (en) | 2021-12-08 | 2021-12-08 | Supporting device for foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488440.2A CN114164838B (en) | 2021-12-08 | 2021-12-08 | Supporting device for foundation pit |
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| CN114164838A CN114164838A (en) | 2022-03-11 |
| CN114164838B true CN114164838B (en) | 2023-05-23 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363224A (en) * | 2008-09-05 | 2009-02-11 | 上海隧道工程股份有限公司 | Movable foundation pit support system and construction method |
| CN102943480B (en) * | 2012-10-09 | 2015-06-03 | 西安科技大学 | Loess foundation pit supporting method |
| CN103161169B (en) * | 2013-03-13 | 2015-06-17 | 上海强劲地基工程股份有限公司 | Prestressed girder for foundation pit supporting |
| CN104674823A (en) * | 2015-02-05 | 2015-06-03 | 马俊文 | Foundation pit protecting support and rectangular foundation pit support method |
| CN205571794U (en) * | 2016-03-08 | 2016-09-14 | 中国石油化工股份有限公司 | Elasticity centralizer welding set |
| KR101728700B1 (en) * | 2016-09-01 | 2017-04-20 | 주식회사 한국건설관리공사 | Reinforcement apparatus for earth retaining temporary facility and temporary structure having the same |
| CN209040582U (en) * | 2018-08-31 | 2019-06-28 | 中铁一局集团第五工程有限公司 | Mobile foundation pit construction protective device |
| CN212001145U (en) * | 2020-03-05 | 2020-11-24 | 中交第二航务工程局有限公司 | Jack props method beam string formula bearing structure |
| CN214194568U (en) * | 2020-12-24 | 2021-09-14 | 中国十九冶集团有限公司 | Foundation pit steel supporting structure |
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