CN108166505A - A kind of foundation pit high stability support device and method - Google Patents
A kind of foundation pit high stability support device and method Download PDFInfo
- Publication number
- CN108166505A CN108166505A CN201810058431.1A CN201810058431A CN108166505A CN 108166505 A CN108166505 A CN 108166505A CN 201810058431 A CN201810058431 A CN 201810058431A CN 108166505 A CN108166505 A CN 108166505A
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- China
- Prior art keywords
- body supports
- supports bar
- steel purlin
- foundation pit
- bar
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Classifications
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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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- 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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a kind of foundation pit high stability support device and methods, including a kind of foundation pit high stability support device, including the first steel purlin, the first movable end is fixedly connected on the right side of the first steel purlin, the first fixed end is provided on the right side of first movable end, the first body supports bar is installed on the right side of first fixed end, the second body supports bar is movably installed on the right side of the first body supports bar, the second fixing end is installed on the right side of the second body supports bar, the second movable end is provided on the right side of second fixing end, the second steel purlin is fixedly connected on the right side of second movable end.The cooperation that the present invention passes through the first body supports bar, the second body supports bar, first pressure sensor, Pneumatic lifting arm and second pressure sensor, it is poor to solve existing bracing members stability, unstable phenomenon is susceptible in work progress, the problem of so as to cause construction accident.
Description
Technical field
The present invention relates to Base hole supporting technology field more particularly to a kind of foundation pit high stability support devices and method.
Background technology
Pattern foundation pit supporting structure is the safety to ensure Underground Construction and foundation pit surrounding enviroment, to foundation pit side-wall and peripheral ring
Supporting and retaining system, reinforcing and the safeguard measure that border uses.Common pattern foundation pit supporting structure form mainly has：Campshed supporting, stake support, piled anchor, campshed
Cantilever；Diaphram wall supporting, ground-connecting-wall and support；Cement retaining wall；Steel sheet pile：Section-steel Piles strut rail slab supporting, steel sheet pile branch
Shield；Soil nail wall（Combined bolting and shotcrete）；It is inverse to make arch wall；Undisturbed soil slope；Internal support of foundation pit；Stake, wall add support system；Simple horizontal branch
Support；Armored concrete campshed etc., existing bracing members exist from heavy and light, installation and dismounting are convenient, speed of application is fast, can repeat profit
With（Environmental protection, green）The advantages that, but it is opposite poor there are stability compared with concrete support, unstability is susceptible in work progress
Phenomenon, so as to cause construction accident, for this purpose, it is proposed that a kind of foundation pit high stability support device and method.
Invention content
Technical problems based on background technology, the present invention propose a kind of foundation pit high stability support device and side
Method has the characteristics that stability is good, and it is poor to solve existing bracing members stability, and unstable phenomenon is susceptible in work progress, from
And the problem of leading to construction accident.
The present invention provides following technical solution：A kind of foundation pit high stability support device, including the first steel purlin, described
The first movable end is fixedly connected on the right side of one steel purlin, the first fixing end is provided on the right side of first movable end
Head, the first body supports bar is installed on the right side of first fixed end, and the right side of the first body supports bar is lived
It is dynamic that second body supports bar is installed, it is installed with the second fixing end on the right side of the second body supports bar, described second
The second movable end is provided on the right side of fixing end, the second steel purlin, institute are fixedly connected on the right side of second movable end
The inside for stating the first body supports bar is fixedly connected with Pneumatic lifting arm, and the first main body branch is run through on the right side of the Pneumatic lifting arm
The inside of strut and the inside for extending to the second body supports bar, the first body supports bar and the second body supports bar and right
The position of Pneumatic lifting arm is answered to offer cavity, the second pressure is provided between the Pneumatic lifting arm and the second body supports bar
Force snesor.
Preferably, the surface of first movable end and the second movable end and the first fixed end of correspondence and second are consolidated
The position of fixed end is welded with shelf bracket, between first movable end and the first fixed end and the second fixing end with
Gad is both provided between second movable end.
Preferably, between first fixed end and the first body supports bar and the second body supports bar and second solid
Fixing bolt is installed between fixed end, power cord, the power cord are fixedly connected at the top of the Pneumatic lifting arm
Top through the first body supports bar and extend to the outside of the first body supports bar.
A kind of foundation pit high stability method for supporting, includes the following steps：Support Position is determined by engineering drawing first
Position unwrapping wire at excavation of foundation pit to support absolute altitude, installs the first steel purlin and the second steel purlin, and then shelf bracket is fixed and welded
It connects, then the first body supports bar and the second body supports bar is spliced, after the completion of splicing, by fixing bolt by first
Fixed end is fixed with the first body supports bar, while by fixing bolt by the second body supports bar and the second fixing end
It is fixed, after installation is complete, applies prestressing force, the pressure being subject to by first pressure sensor detection bracing members, so as to right
Soil pressure is monitored in real time, when soil pressure reduction or foundation pit deformation, the spacing between the first steel purlin and the second steel purlin
Become larger, extended by Pneumatic extension bar, the first body supports bar and the second body supports bar are supported, ensure that foundation pit is stablized
Property, by installing second pressure sensor between Pneumatic lifting arm and the second body supports bar, monitor the variation feelings of soil pressure
Condition, and take corresponding measure.
Preferably, the first steel purlin and the second steel purlin after installation is complete, are enclosed in the first steel purlin and the second steel
The inclined-plane of welding steel pad case or bracket on purlin, steel pad case or bracket is depending on the setting angle of bracing members.
The present invention provides a kind of foundation pit high stability support device and method, by first pressure sensor to soil pressure
It is monitored, when foundation pit deforms, support device is supported by Pneumatic lifting arm, so as to ensure bracing members in real time
Stabilization, avoid bracing members unstability, while the soil pressure after foundation pit deformation is monitored by second pressure sensor, pass through
First body supports bar, the second body supports bar, first pressure sensor, Pneumatic lifting arm and second pressure sensor are matched
It closes, it is poor to solve existing bracing members stability, unstable phenomenon is susceptible in work progress, so as to cause asking for construction accident
Topic.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：1 first steel purlin, 2 first movable ends, 3 first fixed ends, 4 first body supports bars, 5 second masters
Body supporting rod, 6 second fixing ends, 7 second movable ends, 8 second steel purlins, 9 first pressure sensors, 10 cavitys, 11 are pneumatically
Elevating lever, 12 second pressure sensors, 13 shelf brackets, 14 gads, 15 fixing bolts, 16 power cords.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：
A kind of foundation pit high stability support device, including the first steel purlin 1, the right side of the first steel purlin 1 is fixedly connected with first
Movable end 2, the right side of the first movable end 2 are provided with the first fixed end 3, and the right side of the first fixed end 3 is fixedly mounted
There is the first body supports bar 4, the right side of the first body supports bar 4 is movably installed with the second body supports bar 5, the second body supports
The right side of bar 5 is installed with the second fixing end 6, and the right side of the second fixing end 6 is provided with the second movable end 7, the second activity
The right side of end 7 is fixedly connected with the second steel purlin 8, and the inside of the first body supports bar 4 is fixedly connected with Pneumatic lifting arm 11,
The right side of Pneumatic lifting arm 11 runs through the first body supports bar 4 and extends to the inside of the second body supports bar 5, the first main body branch
The inside of 4 and second body supports bar 5 of the strut and position of corresponding Pneumatic lifting arm 11 offers cavity 10, Pneumatic lifting arm
11 and second are provided with second pressure sensor 12 between body supports bar 5.
A kind of foundation pit high stability method for supporting, includes the following steps：Support Position is determined by engineering drawing first
Position unwrapping wire at excavation of foundation pit to support absolute altitude, installs the first steel purlin 1 and the second steel purlin 8, and then shelf bracket 13 is fixed
And welding, then the first body supports bar 4 and the second body supports bar 5 are spliced, after the completion of splicing, pass through fixing bolt
15 first fixed end 3 and the first body supports bar 4 are fixed, while by fixing bolt 15 by the second body supports bar
5 are fixed with the second fixing end 6, after installation is complete, apply prestressing force, by first pressure sensor 9 detect bracing members by
The pressure arrived, so as to be monitored in real time to soil pressure, when soil pressure reduction or foundation pit deformation, the first steel purlin 1 and second
Spacing between steel purlin 8 becomes larger, and is extended by Pneumatic extension bar, to the first body supports bar 4 and the second body supports bar 5 into
Row support, ensures base pit stability, is sensed by installing second pressure between 11 and second body supports bar 5 of Pneumatic lifting arm
Device 12, monitors the situation of change of soil pressure, and takes corresponding measure.
Embodiment one：
A kind of foundation pit high stability support device, including the first steel purlin 1, the right side of the first steel purlin 1 is fixedly connected with first
Movable end 2, the right side of the first movable end 2 are provided with the first fixed end 3, and the right side of the first fixed end 3 is fixedly mounted
There is the first body supports bar 4, the right side of the first body supports bar 4 is movably installed with the second body supports bar 5, the second body supports
The right side of bar 5 is installed with the second fixing end 6, and the right side of the second fixing end 6 is provided with the second movable end 7, the second activity
The right side of end 7 is fixedly connected with the second steel purlin 8, and the inside of the first body supports bar 4 is fixedly connected with Pneumatic lifting arm 11,
The right side of Pneumatic lifting arm 11 runs through the first body supports bar 4 and extends to the inside of the second body supports bar 5, the first main body branch
The inside of 4 and second body supports bar 5 of the strut and position of corresponding Pneumatic lifting arm 11 offers cavity 10, Pneumatic lifting arm
11 and second are provided with second pressure sensor 12 between body supports bar 5.
Construction method：Line setting is carried out to Support Position by engineering drawing first, at excavation of foundation pit to support absolute altitude,
First steel purlin 1 and the second steel purlin 8 are installed, then shelf bracket 13 is fixed and welded, then to 4 He of the first body supports bar
Second body supports bar 5 is spliced, after the completion of splicing, by fixing bolt 15 by the first fixed end 3 and the first main body branch
Strut 4 is fixed, while second body supports bar 5 and the second fixing end 6 are fixed by fixing bolt 15, installs
Cheng Hou applies prestressing force, the pressure being subject to by the detection bracing members of first pressure sensor 9, real-time so as to be carried out to soil pressure
Monitoring, when soil pressure reduction or foundation pit deformation, the spacing between the first steel purlin 1 and the second steel purlin 8 becomes larger, by pneumatic
Telescopic rod extends, and the first body supports bar 4 and the second body supports bar 5 are supported, and ensures base pit stability, by gas
Installation second pressure sensor 12, monitors the situation of change of soil pressure, and adopt between 11 and second body supports bar 5 of dynamic elevating lever
Take corresponding measure.
Embodiment two：
A kind of foundation pit high stability support device, including the first steel purlin 1, the right side of the first steel purlin 1 is fixedly connected with first
Movable end 2, the right side of the first movable end 2 are provided with the first fixed end 3, and the right side of the first fixed end 3 is fixedly mounted
There is the first body supports bar 4, the right side of the first body supports bar 4 is movably installed with the second body supports bar 5, the second body supports
The right side of bar 5 is installed with the second fixing end 6, and the right side of the second fixing end 6 is provided with the second movable end 7, the second activity
The right side of end 7 is fixedly connected with the second steel purlin 8, and the inside of the first body supports bar 4 is fixedly connected with Pneumatic lifting arm 11,
The right side of Pneumatic lifting arm 11 runs through the first body supports bar 4 and extends to the inside of the second body supports bar 5, the first main body branch
The inside of 4 and second body supports bar 5 of the strut and position of corresponding Pneumatic lifting arm 11 offers cavity 10, Pneumatic lifting arm
11 and second are provided with second pressure sensor 12 between body supports bar 5；First movable end 2 and the second movable end 7
Surface and the position of corresponding first fixed end 3 and the second fixing end 6 are welded with shelf bracket 13, the first movable end 2 with
Gad 14 is both provided between first fixed end 3 and between the second fixing end 6 and the second movable end 7.
Construction method：Line setting is carried out to Support Position by engineering drawing first, at excavation of foundation pit to support absolute altitude,
First steel purlin 1 and the second steel purlin 8 are installed, wherein the first steel purlin 1 and the second steel purlin 8 are after installation is complete, first
Weld steel pad case or bracket in 1 and second steel purlin 8 of steel purlin, the inclined-plane of steel pad case or bracket is according to the setting angles of bracing members
Depending on；Then shelf bracket 13 is fixed and is welded, and then the first body supports bar 4 and the second body supports bar 5 are spliced,
After the completion of splicing, first fixed end 3 and the first body supports bar 4 are fixed by fixing bolt 15, while by solid
Determine bolt 15 second body supports bar 5 and the second fixing end 6 are fixed, after installation is complete, apply prestressing force, pass through first
Pressure sensor 9 detects the pressure that bracing members are subject to, so as to be monitored in real time to soil pressure, when soil pressure reduction or foundation pit become
During shape, the spacing between the first steel purlin 1 and the second steel purlin 8 becomes larger, and is extended by Pneumatic extension bar, to the first body supports
4 and second body supports bar 5 of bar is supported, and ensures base pit stability, by 11 and second body supports of Pneumatic lifting arm
Second pressure sensor 12 between bar 5 is installed, monitors the situation of change of soil pressure, and take corresponding measure.
Embodiment three：
A kind of foundation pit high stability support device, including the first steel purlin 1, the right side of the first steel purlin 1 is fixedly connected with first
Movable end 2, the right side of the first movable end 2 are provided with the first fixed end 3, and the right side of the first fixed end 3 is fixedly mounted
There is the first body supports bar 4, the right side of the first body supports bar 4 is movably installed with the second body supports bar 5, the second body supports
The right side of bar 5 is installed with the second fixing end 6, and the right side of the second fixing end 6 is provided with the second movable end 7, the second activity
The right side of end 7 is fixedly connected with the second steel purlin 8, and the inside of the first body supports bar 4 is fixedly connected with Pneumatic lifting arm 11,
The right side of Pneumatic lifting arm 11 runs through the first body supports bar 4 and extends to the inside of the second body supports bar 5, the first main body branch
The inside of 4 and second body supports bar 5 of the strut and position of corresponding Pneumatic lifting arm 11 offers cavity 10, Pneumatic lifting arm
11 and second are provided with second pressure sensor 12 between body supports bar 5；First movable end 2 and the second movable end 7
Surface and the position of corresponding first fixed end 3 and the second fixing end 6 are welded with shelf bracket 13, the first movable end 2 with
Gad 14 is both provided between first fixed end 3 and between the second fixing end 6 and the second movable end 7；First fixing end
First 3 and first are installed with fixation between body supports bar 4 and between the second body supports bar 5 and the second fixing end 6
Bolt 15, the top of Pneumatic lifting arm 11 are fixedly connected with power cord 16, and the first body supports bar 4 is run through at the top of power cord 16
And extend to the outside of the first body supports bar 4.
Construction method：Line setting is carried out to Support Position by engineering drawing first, at excavation of foundation pit to support absolute altitude,
First steel purlin 1 and the second steel purlin 8 are installed, wherein the first steel purlin 1 and the second steel purlin 8 are after installation is complete, first
Weld steel pad case or bracket in 1 and second steel purlin 8 of steel purlin, the inclined-plane of steel pad case or bracket is according to the setting angles of bracing members
Depending on；Then shelf bracket 13 is fixed and is welded, and then the first body supports bar 4 and the second body supports bar 5 are spliced,
After the completion of splicing, first fixed end 3 and the first body supports bar 4 are fixed by fixing bolt 15, while by solid
Determine bolt 15 second body supports bar 5 and the second fixing end 6 are fixed, after installation is complete, apply prestressing force, pass through first
Pressure sensor 9 detects the pressure that bracing members are subject to, so as to be monitored in real time to soil pressure, when soil pressure reduction or foundation pit become
During shape, the spacing between the first steel purlin 1 and the second steel purlin 8 becomes larger, and is extended by Pneumatic extension bar, to the first body supports
4 and second body supports bar 5 of bar is supported, and ensures base pit stability, by 11 and second body supports of Pneumatic lifting arm
Second pressure sensor 12 between bar 5 is installed, monitors the situation of change of soil pressure, and take corresponding measure.
In the present invention, soil pressure is monitored in real time by first pressure sensor 9, when foundation pit deforms, is led to
It crosses Pneumatic lifting arm 11 to be supported support device, so as to ensure the stabilization of bracing members, avoids bracing members unstability, pass through simultaneously
Second pressure sensor 12 is monitored the soil pressure after foundation pit deformation, passes through the first body supports bar 4, the second body supports
The cooperation of bar 5, first pressure sensor 9, Pneumatic lifting arm 11 and second pressure sensor 12 solves existing bracing members and stablizes
Property is poor, and unstable phenomenon is susceptible in work progress, the problem of so as to cause construction accident.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of foundation pit high stability support device, including the first steel purlin（1）, it is characterised in that：The first steel purlin（1）
Right side be fixedly connected with the first movable end（2）, first movable end（2）Right side be provided with the first fixed end
（3）, first fixed end（3）Right side be installed with the first body supports bar（4）, the first body supports bar
（4）Right side be movably installed with the second body supports bar（5）, the second body supports bar（5）Right side be installed with
Two fixing ends（6）, second fixing end（6）Right side be provided with the second movable end（7）, second movable end（7）
Right side be fixedly connected with the second steel purlin（8）, the first body supports bar（4）Inside be fixedly connected with Pneumatic lifting arm
（11）, the Pneumatic lifting arm（11）Right side run through the first body supports bar（4）And extend to the second body supports bar（5）'s
Inside, the first body supports bar（4）With the second body supports bar（5）Inside and corresponding Pneumatic lifting arm（11）Position
Offer cavity（10）, the Pneumatic lifting arm（11）With the second body supports bar（5）Between be provided with second pressure sensing
Device（12）.
2. a kind of foundation pit high stability support device according to claim 1, it is characterised in that：First movable end
（2）With the second movable end（7）Surface and corresponding first fixed end（3）With the second fixing end（6）Position be welded with
Shelf bracket（13）, first movable end（2）With the first fixed end（3）Between and the second fixing end（6）With second
Movable end（7）Between be both provided with gad（14）.
3. a kind of foundation pit high stability support device according to claim 1, it is characterised in that：First fixed end
（3）With the first body supports bar（4）Between and the second body supports bar（5）With the second fixing end（6）Between be fixedly mounted
There is fixing bolt（15）, the Pneumatic lifting arm（11）Top be fixedly connected with power cord（16）, the power cord（16）'s
The first body supports bar is run through at top（4）And extend to the first body supports bar（4）Outside.
4. a kind of foundation pit high stability method for supporting, it is characterised in that：Include the following steps：First by engineering drawing to support level
Carry out line setting is put, at excavation of foundation pit to support absolute altitude, the first steel purlin is installed（1）With the second steel purlin（8）, Ran Housan
Angle bracket（13）Fixed and welding, then to the first body supports bar（4）With the second body supports bar（5）Spliced, spliced
After the completion, pass through fixing bolt（15）By the first fixed end（3）With the first body supports bar（4）It is fixed, passes through simultaneously
Fixing bolt（15）By the second body supports bar（5）With the second fixing end（6）It is fixed, after installation is complete, applies prestressing force,
Pass through first pressure sensor（9）The pressure that detection bracing members are subject to, so as to be monitored in real time to soil pressure, when soil pressure subtracts
During small or foundation pit deformation, the first steel purlin（1）With the second steel purlin（8）Between spacing become larger, extended by Pneumatic extension bar,
To the first body supports bar（4）With the second body supports bar（5）It is supported, ensures base pit stability, by Pneumatic elevation
Bar（11）With the second body supports bar（5）Between install second pressure sensor（12）, the situation of change of soil pressure is monitored, and adopt
Take corresponding measure.
5. a kind of foundation pit high stability method for supporting according to claim 4, it is characterised in that：The first steel purlin
（1）With the second steel purlin（8）After installation is complete, in the first steel purlin（1）With the second steel purlin（8）Upper welding steel pad case or ox
The inclined-plane of leg, steel pad case or bracket is depending on the setting angle of bracing members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058431.1A CN108166505A (en) | 2018-01-22 | 2018-01-22 | A kind of foundation pit high stability support device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058431.1A CN108166505A (en) | 2018-01-22 | 2018-01-22 | A kind of foundation pit high stability support device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108166505A true CN108166505A (en) | 2018-06-15 |
Family
ID=62515117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810058431.1A Pending CN108166505A (en) | 2018-01-22 | 2018-01-22 | A kind of foundation pit high stability support device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108166505A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110629764A (en) * | 2019-09-27 | 2019-12-31 | 中国一冶集团有限公司 | Annular internal support system of foundation pit and support replacement construction method |
| CN115652942A (en) * | 2022-09-07 | 2023-01-31 | 山东建勘集团有限公司 | Foundation pit supporting and protecting combined structure based on prestressed hollow square pile and construction method thereof |
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| CN101463606A (en) * | 2007-12-19 | 2009-06-24 | 上海隧道工程股份有限公司 | Foundation pit controllable hydraulic steel support and use thereof |
| CN201635078U (en) * | 2010-01-19 | 2010-11-17 | 上海建工（集团）总公司 | Supporting end actuating mechanism device of self-adaptation supporting system |
| CN201778327U (en) * | 2010-01-19 | 2011-03-30 | 上海建工（集团）总公司 | Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit |
| CN105332379A (en) * | 2014-08-15 | 2016-02-17 | 上海骋浩机械有限公司 | Horizontal foundation pit supporting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2129350Y (en) * | 1992-04-28 | 1993-04-07 | 常州常成机电有限公司 | Pneumatic lifter |
| CN101463606A (en) * | 2007-12-19 | 2009-06-24 | 上海隧道工程股份有限公司 | Foundation pit controllable hydraulic steel support and use thereof |
| CN201635078U (en) * | 2010-01-19 | 2010-11-17 | 上海建工（集团）总公司 | Supporting end actuating mechanism device of self-adaptation supporting system |
| CN201778327U (en) * | 2010-01-19 | 2011-03-30 | 上海建工（集团）总公司 | Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN108951658B (en) * | 2018-08-24 | 2023-11-24 | 重庆建工第八建设有限责任公司 | Deep foundation pit section steel supporting system based on active control |
| CN110629764A (en) * | 2019-09-27 | 2019-12-31 | 中国一冶集团有限公司 | Annular internal support system of foundation pit and support replacement construction method |
| CN115652942A (en) * | 2022-09-07 | 2023-01-31 | 山东建勘集团有限公司 | Foundation pit supporting and protecting combined structure based on prestressed hollow square pile and construction method thereof |
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Application publication date: 20180615 |