CN115369886A - Tool type supporting system capable of automatically adjusting axial force for foundation pit - Google Patents
Tool type supporting system capable of automatically adjusting axial force for foundation pit Download PDFInfo
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- CN115369886A CN115369886A CN202210424780.7A CN202210424780A CN115369886A CN 115369886 A CN115369886 A CN 115369886A CN 202210424780 A CN202210424780 A CN 202210424780A CN 115369886 A CN115369886 A CN 115369886A
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- foundation pit
- hydraulic jack
- axial force
- deformation displacement
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 238000006073 displacement reaction Methods 0.000 claims abstract description 49
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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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- Life Sciences & Earth Sciences (AREA)
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- Structural Engineering (AREA)
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Abstract
The invention discloses a tool type supporting system capable of automatically adjusting axial force for a foundation pit, and aims to provide the tool type supporting system capable of automatically adjusting the axial force for the foundation pit, which can timely adjust prestress applied to a profile steel supporting beam when the foundation pit is displaced so as to eliminate deformation displacement of the foundation pit and keep the foundation pit in a stable state. The foundation pit enclosure wall comprises a foundation pit enclosure wall; enclosing a purlin beam; the steel support beams are supported between the surrounding purlin beams; the self-adjusting prestress device provides prestress for the profile steel supporting beam so that the profile steel supporting beam is supported between the surrounding purlin beams, and comprises an electric hydraulic jack and a foundation pit deformation displacement monitor, wherein the foundation pit deformation displacement monitor is used for monitoring the foundation pit deformation displacement of the position of the profile steel supporting beam.
Description
Technical Field
The invention relates to the field of foundation pit supporting, in particular to a tool type supporting system capable of automatically adjusting axial force for a foundation pit.
Background
The existing foundation pit support generally comprises a foundation pit enclosure wall, an enclosure purlin beam and a prestressed steel combined support. The purlin beam surrounds and is arranged on the inner side of the foundation pit enclosure wall. The prestress profile steel combined support comprises a profile steel support beam and a prestress pressurizing assembly, and the prestress pressurizing assembly comprises a hydraulic jack. The structural steel supporting beam is supported between the surrounding purlin beams through the prestress pressurizing assembly, and prestress is applied to the structural steel supporting beam through the hydraulic jack to support soil pressure outside the foundation pit. After the hydraulic jack of the prestressed profile steel combined support in the conventional foundation pit support is pressurized, the hydraulic jack is taken down and turned to other support structures, so that the prestress can be provided for the profile steel support beam to improve the foundation pit supporting capacity and improve the utilization rate of the hydraulic jack; however, the existing prestressed profile steel combined support cannot find that the foundation pit is displaced in time, and in the using process of the prestressed profile steel combined support, if the foundation pit is displaced (the soil pressure outside the foundation pit is increased, the foundation pit is displaced inwards, or the soil pressure outside the foundation pit is reduced, the foundation pit is displaced outwards), the prestress applied to the profile steel supporting beam cannot be adjusted in time, so that the deformation of the foundation pit is continuously increased, and the safety of peripheral facilities of the foundation pit is influenced; especially, when facilities and/or buildings with extremely high requirements on foundation pit deformation control, such as subway tunnels and ancient buildings, are arranged beside the foundation pits, extremely large potential safety hazards exist.
Disclosure of Invention
The invention aims to provide a tool type supporting system capable of automatically adjusting axial force for a foundation pit, which can timely adjust prestress applied to a profile steel supporting beam to eliminate deformation and displacement of the foundation pit and keep the foundation pit in a stable state when the foundation pit displaces.
The technical scheme of the invention is as follows:
a but foundation ditch is with instrument formula braced system of automatically regulated axial force includes:
a foundation pit enclosure wall;
the enclosing purlin beam is arranged on the inner side of the foundation pit enclosing wall;
the steel support beams are supported between the surrounding purlin beams;
the self-adjusting prestress device provides prestress for the section steel supporting beam so that the section steel supporting beam is supported between the surrounding purlin beams, and comprises an electric hydraulic jack and a foundation pit deformation displacement monitor which is used for monitoring the foundation pit deformation displacement of the position where the section steel supporting beam is located.
When the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit at the position of the section steel support beam to the inner side of the foundation pit exceeds a set value D1, the electric hydraulic jack increases the prestress on the section steel support beam, and the foundation pit is pushed outwards through the section steel support beam and the enclosing purlin beam so as to eliminate the deformation displacement of the inner wall of the foundation pit to the inner side of the foundation pit;
when the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit at the position of the profile steel supporting beam to the outer side of the foundation pit exceeds a set value D2, the electric hydraulic jack reduces the prestress of the profile steel supporting beam so as to eliminate the deformation displacement of the inner wall of the foundation pit to the outer side of the foundation pit. So, not only can in time discover that the foundation ditch takes place to warp the displacement, can in addition take place to warp the displacement at the foundation ditch just, exert the prestressing force at a shaped steel supporting beam through timely regulation electro-hydraulic jack to eliminate the deformation displacement of foundation ditch, keep the foundation ditch to be in steady state, be particularly useful for near the foundation ditch have subway tunnel, ancient building etc. to apply in the foundation ditch warp the control and require high foundation ditch engineering.
Preferably, the foundation pit deformation displacement monitor comprises a laser distance meter, the laser distance meter is used for monitoring the foundation pit distance of the position of the profile steel supporting beam, and the foundation pit distance is the foundation pit distance in the length direction of the profile steel supporting beam. Therefore, the pit distance of the foundation pit at the position of the profile steel supporting beam can be monitored in real time through the laser range finder, once the laser range finder detects that the pit distance of the foundation pit changes, the foundation pit is subjected to deformation displacement, and specifically, when the pit distance of the foundation pit becomes smaller, the inner wall of the foundation pit is subjected to deformation displacement towards the inner side of the foundation pit; and if the pit distance of the foundation pit is increased, the deformation and displacement of the inner wall of the foundation pit towards the outer side of the foundation pit are indicated.
Preferably, the self-adjusting prestressing device further comprises two pressing members which can be mutually spread, and the electro-hydraulic jack is positioned between the two pressing members and is used for spreading the two pressing members.
Preferably, the self-adjusting prestressing device further comprises a guide box, the guide box comprises an upper limit plate and a left side limit plate and a right side limit plate which are parallel to each other, the upper limit plate is parallel to the telescopic direction of the electric hydraulic jack, the side limit plates are parallel to the telescopic direction of the electric hydraulic jack, an inner cavity defined by the guide box forms a pressurizing part guide cavity, the two pressurizing parts are located in the pressurizing part guide cavity, the upper limit plate and the two side limit plates are fixed on one of the pressurizing parts, and the other pressurizing part can move in the pressurizing part guide cavity along the telescopic direction of the electric hydraulic jack. So, can carry on spacingly to the moving direction who adds the pressure part through last limiting plate and two side limiting plates of left and right sides, at the prestressing force of electronic hydraulic jack application and adjust the prestressing force in-process, add the pressure part and can follow the confined direction and remove, guarantee that shaped steel supporting beam can not the lateral instability.
Preferably, the guide box further comprises a lower limiting plate, the lower limiting plate is located below the upper limiting plate, the lower limiting plate is parallel to the telescopic direction of the electric hydraulic jack, the lower limiting plate is fixed on one of the pressurizing pieces, and the lower limiting plate and the upper limiting plate are fixed on the same pressurizing piece. Thus, the position of the pressing member in the moving direction can be further increased.
Preferably, a support member is further provided between the two pressure members.
Preferably, the pressing member includes an H-shaped steel and a plurality of reinforcing plates disposed between both flange plates of the H-shaped steel.
Preferably, the self-adjusting prestressing device further comprises a pressure detection sensor, the electric hydraulic jack comprises a hydraulic cylinder and an electric pump station, and the pressure detection sensor is used for detecting the pressure in one end of the two ends of the hydraulic cylinder, which is opposite to the piston rod of the hydraulic cylinder. Therefore, the pressure in the hydraulic cylinder can be detected through the pressure detection sensor, and the pre-pressure applied to the steel support beam by the electric hydraulic jack is prevented from exceeding a set value.
Preferably, the oil inlet and the oil outlet at two ends of the hydraulic cylinder are respectively provided with an electromagnetic switch valve. Therefore, after the prestress is applied to the electric hydraulic jack and the prestress is adjusted, the hydraulic cylinder can be locked to apply the prestress by closing the electromagnetic switch valve, and the prestress applied to the section steel supporting beam is prevented from changing due to leakage of an oil pipeline of the electric hydraulic jack.
The invention has the beneficial effects that: not only can in time discover that the foundation ditch takes place to warp the displacement, can in addition take place to warp the displacement at the foundation ditch just, apply the prestressing force at a shaped steel supporting beam through timely regulation electro-hydraulic jack to eliminate the deformation displacement of foundation ditch, keep the foundation ditch to be in steady state, be particularly useful for by the foundation ditch have subway tunnel, ancient building etc. to apply in the foundation ditch warp the control requirement high foundation ditch engineering.
Drawings
Fig. 1 is a schematic structural diagram of a tool-type supporting system for a foundation pit capable of automatically adjusting an axial force according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a self-adjusting prestressing device according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a tool type supporting system capable of automatically adjusting axial force for a foundation pit according to a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a tool-type supporting system for a foundation pit capable of automatically adjusting an axial force according to a third embodiment of the present invention.
In the figure:
a foundation pit enclosure wall 1;
enclosing a purlin beam 2;
a section steel support beam 3;
the self-adjusting type prestress device 4 comprises an electric hydraulic jack 4.1, a pressurizing piece 4.2, a guide box 4.3, a side limiting plate 4.31 and an upper limiting plate 4.32;
a triangular support 5;
the end support beams 6.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 and 2, the tool type supporting system capable of automatically adjusting the axial force for the foundation pit comprises a foundation pit enclosure wall 1, an enclosure purlin beam 2, a section steel supporting beam 3 and a self-adjusting type pre-stressing device 4. Enclose the purlin roof beam setting inboard at the foundation ditch enclosure wall, in this embodiment, enclose the purlin roof beam and enclose the purlin for the steel. The section steel support beams are supported between the purlin enclosing beams. The self-adjusting prestress device provides prestress for the section steel support beam so that the section steel support beam is supported between the surrounding purlin beams. The self-adjusting prestress device comprises an electric hydraulic jack 4.1 and a foundation pit deformation displacement monitor, wherein the foundation pit deformation displacement monitor is used for monitoring the foundation pit deformation displacement of the position of the profile steel supporting beam. The pit deformation displacement monitor is not shown in the figure. In this embodiment, the number of the electro-hydraulic jacks in the self-adjusting prestressing device is one or more.
When the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit at the position of the profile steel supporting beam to the inner side of the foundation pit exceeds a set value D1, the electric hydraulic jack increases the prestress of the profile steel supporting beam, and the foundation pit is pushed outwards through the profile steel supporting beam and the surrounding purlin beam so as to eliminate the deformation displacement of the inner wall of the foundation pit to the inner side of the foundation pit. In this embodiment, the set value D1 is 1 to 3 mm.
When the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit at the position of the profile steel supporting beam to the outer side of the foundation pit exceeds a set value D2, the electric hydraulic jack reduces the prestress of the profile steel supporting beam so as to eliminate the deformation displacement of the inner wall of the foundation pit to the outer side of the foundation pit. In this embodiment, the setting value D2 is 1 to 3 mm. So, not only can in time discover that the foundation ditch takes place to warp the displacement, can in addition take place to warp the displacement at the foundation ditch just, apply the prestressing force at shaped steel supporting beam through timely regulation electro-hydraulic jack to eliminate the deformation displacement of foundation ditch, keep the foundation ditch to be in steady state, be particularly useful for by the foundation ditch have subway tunnel, ancient building etc. to apply in the foundation ditch deformation control requires high foundation ditch engineering.
In particular, as shown in fig. 2, the self-adjusting prestressing device further comprises two pressing members 4.2 which can be spread apart from each other. The electro-hydraulic jack is positioned between the two pressurizing pieces and is used for expanding the two pressurizing pieces.
In this embodiment, as shown in fig. 1, the self-adjusting prestressing device is located between the surrounding purlin beam and one end of the section steel supporting beam, and the other end of the section steel supporting beam abuts against the surrounding purlin beam. The telescopic direction of the electric hydraulic jack is parallel to the section steel supporting beam. The section steel supporting beams are horizontally distributed.
Further, the pit deformation displacement monitor includes a laser rangefinder (not shown in the figure). The laser range finder is used for monitoring the foundation pit distance of the position of the profile steel supporting beam, and the foundation pit distance is the foundation pit distance in the length direction of the profile steel supporting beam. Therefore, the pit distance of the foundation pit at the position of the profile steel supporting beam can be monitored in real time through the laser range finder, once the laser range finder detects that the pit distance of the foundation pit changes, the foundation pit is subjected to deformation displacement, and specifically, when the pit distance of the foundation pit becomes smaller, the inner wall of the foundation pit is subjected to deformation displacement towards the inner side of the foundation pit; and if the pit distance of the foundation pit is increased, the deformation and displacement of the inner wall of the foundation pit towards the outer side of the foundation pit are indicated.
Further, the self-adjusting prestressing device further comprises a pressure detecting sensor (not shown in the figure). The electric hydraulic jack comprises a hydraulic cylinder and an electric pump station. The pressure detection sensor is used for detecting the pressure in one end of the two ends of the hydraulic cylinder, which is opposite to the piston rod of the hydraulic cylinder. Therefore, the pressure in the hydraulic cylinder can be detected through the pressure detection sensor, and the pre-pressure applied to the steel support beam by the electric hydraulic jack is prevented from exceeding a set value.
Further, the oil inlet and outlet ports at the two ends of the hydraulic cylinder are provided with electromagnetic switch valves (not shown in the figure). Therefore, after the electric hydraulic jack finishes prestressing and adjusts the prestressing, the hydraulic cylinder can be locked to apply the prestressing force by closing the electromagnetic switch valve, and the prestress applied to the section steel support beam caused by leakage of an oil pipeline of the electric hydraulic jack is prevented from changing.
Further, as shown in fig. 2, the self-adjusting prestressing device further comprises a guide box 4.3. The guide box comprises an upper limit plate 4.32 and two left and right parallel side limit plates 4.31. The upper limiting plate is parallel to the telescopic direction of the electric hydraulic jack, and the side limiting plate is parallel to the telescopic direction of the electric hydraulic jack. The inner cavity surrounded by the guide box forms a guide cavity of the pressurizing part. Two pressure parts are located in the pressure part guide cavity, the upper limiting plate and the two side limiting plates are fixed on one of the pressure parts, and the other pressure part can move in the pressure part guide cavity along the telescopic direction of the electric hydraulic jack. In this embodiment, the upper limiting plate is perpendicular to the side limiting plates, the upper limiting plates are distributed horizontally, and the upper limiting plates are multiple. So, can carry on spacingly to the moving direction of pressurization piece through last spacing board and two side limiting plates of left and right sides, exert prestressing force and adjust the prestressing force in-process at the electro-hydraulic jack, the pressurization piece can be followed and limited the direction and removed, guarantees that shaped steel supporting beam can not the lateral instability.
The guide box further comprises a lower limiting plate. The lower limiting plate is parallel to the upper limiting plate. The lower limiting plate is located below the upper limiting plate, the lower limiting plate is parallel to the telescopic direction of the electric hydraulic jack, the lower limiting plate is fixed on one of the pressurizing pieces, and the lower limiting plate and the upper limiting plate are fixed on the same pressurizing piece. In this embodiment, the lower limiting plate has a plurality of blocks. Thus, the position of the pressing member in the moving direction can be further increased.
A supporting piece is also arranged between the two pressing pieces. The pressurizing piece comprises H-shaped steel and a plurality of reinforcing plates arranged between two flange plates of the H-shaped steel.
The second embodiment is the same as the first embodiment, except that,
as shown in fig. 3, a plurality of triangular supporting pieces 5 are arranged on the inner side surface of the enclosing purlin beam, and the triangular supporting pieces are fixed on the enclosing purlin beam through bolts. The self-adjusting prestress device is positioned between one triangular support piece and one end of the section steel support beam, and the other end of the section steel support beam is propped against the other triangular support piece. The telescopic direction of the electric hydraulic jack is parallel to the section steel supporting beam.
The third embodiment is the same as the first embodiment, except that,
as shown in fig. 4, a plurality of triangular supporting pieces 5 are arranged on the inner side surface of the enclosing purlin beam. In this embodiment, a shaped steel supporting beam both ends are supported on enclosing the purlin roof beam through tip supporting beam subassembly respectively, and tip supporting beam subassembly is the V font and distributes, and it includes that two are the V font and distribute tip supporting beam 6, and two tip supporting beam one ends are supported on the triangular supports piece on enclosing the medial surface of purlin roof beam, and two tip supporting beam's the other end supports in shaped steel supporting beam's tip through same triangular supports piece. The self-adjusting prestress device is positioned at one end of the section steel supporting beam. The telescopic direction of the electric hydraulic jack is parallel to the section steel supporting beam.
In a fourth embodiment, the remaining structure of the present embodiment refers to the first embodiment, and the difference therebetween,
the inner side surface of the enclosing purlin beam is provided with a plurality of triangular supporting pieces. In this embodiment, a shaped steel supporting beam both ends are supported on enclosing the purlin roof beam through tip supporting beam subassembly respectively, and tip supporting beam subassembly is the V font and distributes, and it includes that two are the V font and distribute tip supporting beam and be located the triangle support piece of two tip supporting beam one ends, and two tip supporting beam one end are supported on the triangle support piece on the medial surface of enclosing the purlin roof beam, and the other end of two tip supporting beams supports in the tip of shaped steel supporting beam through same triangle support piece. The profile steel supporting beam consists of two sections of supporting beams, and the self-adjusting prestress device is positioned between the two sections of supporting beams.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modifications, alterations and equivalent changes made to the above embodiment according to the technical spirit of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. A but foundation ditch is with instrument formula braced system of automatically regulated axial force includes:
a foundation pit enclosure wall;
the enclosing purlin beam is arranged on the inner side of the foundation pit enclosing wall;
the steel support beams are supported between the surrounding purlin beams;
the method is characterized by further comprising the following steps:
the self-adjusting prestress device provides prestress for the section steel supporting beam so that the section steel supporting beam is supported between the surrounding purlin beams, and comprises an electric hydraulic jack and a foundation pit deformation displacement monitor which is used for monitoring the foundation pit deformation displacement of the position where the section steel supporting beam is located.
2. The tool type supporting system capable of automatically adjusting the axial force for the foundation pit as claimed in claim 1, wherein when the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit where the profile steel supporting beam is located towards the inner side of the foundation pit exceeds a set value D1, the electro-hydraulic jack increases the prestress on the profile steel supporting beam, and the foundation pit is pushed outwards through the profile steel supporting beam and the surrounding purlin beam so as to eliminate the deformation displacement of the inner wall of the foundation pit towards the inner side of the foundation pit;
when the foundation pit deformation displacement monitor monitors that the deformation displacement of the inner wall of the foundation pit at the position of the profile steel supporting beam to the outer side of the foundation pit exceeds a set value D2, the electric hydraulic jack reduces the prestress of the profile steel supporting beam so as to eliminate the deformation displacement of the inner wall of the foundation pit to the outer side of the foundation pit.
3. The system of claim 1, wherein the foundation pit deformation displacement monitor comprises a laser distance meter for monitoring a pit pitch of the section steel support beam in a longitudinal direction of the section steel support beam.
4. A tool type supporting system capable of automatically adjusting axial force for foundation pits as claimed in claim 1, 2 or 3, wherein the self-adjusting prestressing device further comprises two pressing members capable of mutually expanding, and the electro-hydraulic jack is located between the two pressing members and is used for expanding the two pressing members.
5. The tool type supporting system capable of automatically adjusting the axial force for the foundation pit as claimed in claim 4, wherein the self-adjusting prestressing device further comprises a guide box, the guide box comprises an upper limit plate and a left side limit plate and a right side limit plate which are parallel to each other, the upper limit plate is parallel to the telescopic direction of the electro-hydraulic jack, the side limit plates are parallel to the telescopic direction of the electro-hydraulic jack, an inner cavity defined by the guide box forms a pressure member guide cavity, the two pressure members are located in the pressure member guide cavity, the upper limit plate and the two side limit plates are both fixed on one of the pressure members, and the other pressure member can move in the pressure member guide cavity along the telescopic direction of the electro-hydraulic jack.
6. The tool type supporting system for foundation pit capable of automatically adjusting axial force as claimed in claim 5, wherein the guide box further comprises a lower limiting plate, the lower limiting plate is located below the upper limiting plate, the lower limiting plate is parallel to the telescopic direction of the electro-hydraulic jack, the lower limiting plate is fixed on one of the pressing members, and the lower limiting plate and the upper limiting plate are fixed on the same pressing member.
7. The tool type supporting system for foundation pit capable of automatically adjusting axial force according to claim 4, wherein a supporting member is further arranged between the two pressing members.
8. The tool type supporting system for the foundation pit capable of automatically adjusting the axial force as claimed in claim 4, wherein the pressurizing member comprises an H-shaped steel and a plurality of reinforcing plates arranged between two flange plates of the H-shaped steel.
9. The tool type supporting system capable of automatically adjusting the axial force for the foundation pit according to claim 1, 2 or 3, wherein the self-adjusting prestressing device further comprises a pressure detection sensor, the electric hydraulic jack comprises a hydraulic cylinder and an electric pump station, and the pressure detection sensor is used for detecting the pressure in one end of two ends of the hydraulic cylinder, which is opposite to a piston rod of the hydraulic cylinder.
10. The tool type supporting system capable of automatically adjusting the axial force for the foundation pit as claimed in claim 9, wherein the oil inlet and the oil outlet at both ends of the hydraulic cylinder are provided with electromagnetic switch valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424780.7A CN115369886A (en) | 2022-04-21 | 2022-04-21 | Tool type supporting system capable of automatically adjusting axial force for foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424780.7A CN115369886A (en) | 2022-04-21 | 2022-04-21 | Tool type supporting system capable of automatically adjusting axial force for foundation pit |
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| CN115369886A true CN115369886A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210424780.7A Pending CN115369886A (en) | 2022-04-21 | 2022-04-21 | Tool type supporting system capable of automatically adjusting axial force for foundation pit |
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| CN (1) | CN115369886A (en) |
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| CN111188342A (en) * | 2019-10-17 | 2020-05-22 | 浙江省建筑设计研究院 | Double-surrounding purlin concrete inner support system with deformation compensation device |
| CN215715347U (en) * | 2021-02-21 | 2022-02-01 | 东通岩土科技股份有限公司 | Prestress connecting structure for building foundation pit support |
| CN218479173U (en) * | 2022-04-21 | 2023-02-14 | 东通岩土科技股份有限公司 | Foundation pit supporting system capable of automatically adjusting prestress |
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2022
- 2022-04-21 CN CN202210424780.7A patent/CN115369886A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106978813A (en) * | 2016-01-13 | 2017-07-25 | 中国建筑第八工程局有限公司 | The anti-failure power transmission component of the relay of large deep foundation pit bracing members system |
| CN105780824A (en) * | 2016-03-16 | 2016-07-20 | 东通岩土科技（杭州）有限公司 | Profile steel testing method for foundation pit profile steel inner support system |
| CN108343070A (en) * | 2018-03-12 | 2018-07-31 | 上海建工建集团有限公司 | A kind of Bidirectional supporting system deformation monitoring compensation device and construction method |
| CN108951658A (en) * | 2018-08-24 | 2018-12-07 | 重庆建工第八建设有限责任公司 | A kind of deep basal pit fashioned iron support system based on active control |
| CN111188342A (en) * | 2019-10-17 | 2020-05-22 | 浙江省建筑设计研究院 | Double-surrounding purlin concrete inner support system with deformation compensation device |
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