CN106869140B - A kind of relay for the compensation of large deep foundation pit bracing members system axle power - Google Patents
A kind of relay for the compensation of large deep foundation pit bracing members system axle power Download PDFInfo
- Publication number
- CN106869140B CN106869140B CN201710235249.4A CN201710235249A CN106869140B CN 106869140 B CN106869140 B CN 106869140B CN 201710235249 A CN201710235249 A CN 201710235249A CN 106869140 B CN106869140 B CN 106869140B
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- Prior art keywords
- support unit
- jack
- relaying
- relay
- bracing members
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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
-
- 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
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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)
- Bridges Or Land Bridges (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of relay for the compensation of large deep foundation pit bracing members system axle power, bracing members include at least one first support unit and one second support unit, and the first support unit is abutted each other with the second support unit along same axis；Relay include the relaying jack being installed between the first support unit and the second support unit and be installed on relaying jack on the outside of power transmission component, the first end of power transmission component extends to the first support unit direction and is fixedly connected with the first support unit, and the second end of power transmission component extends to the second support unit direction and is slidably connected with the second support unit.Relay of the invention is using relaying jack and power transmission component composition, the first end of power transmission component is fixing end, it is fixedly connected with the first support unit, the second end of power transmission component is free end, it is slidably connected with the second support unit, can guarantee effective transmitting of the axial force to relaying jack using power transmission component.
Description
Technical field
The present invention relates to pattern foundation pit supporting structure field more particularly to it is a kind of for large deep foundation pit bracing members system axle power compensation
Relay.
Background technique
Construction efficiency can be improved using the type steel support system of pin-connected panel in large deep foundation pit engineering, reduces Construction on Environment
Influence.It is well known that conventional axle power compensation device is typically mounted at the end of support construction, can not solve in Large Foundation Pit
Axial force of the supports is unevenly distributed, the big problem of adjustment difficulty.And the steel support structure of overlength exist with temperature change and it is flexible with
And axle power, the problems such as spatial distribution is uneven, the performance for influencing bracing members efficiency even jeopardizes the safety of support system, therefore needs
Built-up shaft force compensating device and corresponding adjusting method are set in bracing members system, adapt to wanting for Large Scale Deep Foundation Pit Support
It asks.
Summary of the invention
Technical problem to be solved by the invention is to provide it is a kind of for large deep foundation pit bracing members system axle power compensation
Relay can effectively solve the problem that axial force of the supports is unevenly distributed in Large Foundation Pit, the big problem of adjustment difficulty.
In order to realize the above technical effect, the invention discloses it is a kind of for large deep foundation pit bracing members system axle power compensation
Relay, bracing members system include the bracing members being supported in foundation pit, and the bracing members include at least one first support unit
With one second support unit, first support unit is abutted each other with second support unit along same axis；
The relay includes the relaying thousand being installed between first support unit and second support unit
Jin top and the power transmission component being installed on the outside of the relaying jack, the first end of the power transmission component is to described first
Support cell orientation extends and is fixedly connected with first support unit, and the second end of the power transmission component is supported to described second
Cell orientation extends and is slidably connected with second support unit.
A further improvement of the present invention lies in that it is described relaying jack first end by a first axle keep structure with
The first support unit connection, it includes first of the first end set on the relaying jack that the first axle, which keeps structure,
End plate, set on the end of first support unit the second end plate and be connected to the first end plate and the second end
First Transition plate between plate；
The second end of the relaying jack keeps structure to connect with second support unit by a second axis, institute
Stating second axis holding structure includes set on the third end plate of the second end of the relaying jack, set on the second support list
4th end plate of the end of member and the second transition plates being connected between the third end plate and the 4th end plate.
A further improvement of the present invention lies in that the relaying jack is hydraulic jack, the of the relaying jack
Two ends are that hydraulic thrust supports end.
The present invention due to use above technical scheme, make it have it is following the utility model has the advantages that
1, for relay using relaying jack and power transmission component composition, the first end of power transmission component is fixing end, with the
One support unit is fixedly connected, and the second end of power transmission component is free end, is slidably connected with the second support unit, is utilized power transmission group
Part can guarantee effective transmitting of the axial force to relaying jack；
2, power transmission component one end is fixed, and one end sliding constitutes the force transfer structure for being similar to simply supported beam, allows to relay jack
Axial free movement, and play the role of sharing moment of flexure and shearing at bracing members connecting node, guarantor is played to relaying jack
Shield effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of the large deep foundation pit bracing members system in the present invention.
Fig. 2 is the part elevation schematic diagram of the large deep foundation pit bracing members system in the present invention.
Fig. 3 is a kind of stereo decomposing knot of the relay for the compensation of large deep foundation pit bracing members system axle power of the present invention
Structure schematic diagram.
Fig. 4 is that a kind of facade structures of the relay for the compensation of large deep foundation pit bracing members system axle power of the present invention are shown
It is intended to.
Fig. 5 is that a kind of plan structure of the relay for the compensation of large deep foundation pit bracing members system axle power of the present invention is shown
It is intended to.
Fig. 6 is the A-A diagrammatic cross-section of Fig. 4.
Fig. 7 is the B-B diagrammatic cross-section of Fig. 4.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Firstly, large deep foundation pit bracing members system is mainly by support construction, 21 and of purlin structure refering to fig. 1 and shown in Fig. 2
Axle power compensation system composition.Purlin structure 21 is arranged one week along foundation pit wall 10, and the bottom of purlin structure 21 is equipped with A-frame
211, it is used to support and positions purlin structure 21, as shown in Figure 2；In the corner of purlin structure 21, angle brace 212 can also be set,
As shown in Figure 1, to reinforce purlin structure 21 with the overall stability of foundation pit wall 10.Support construction includes being supported in purlin structure
Bracing members 11 in 21 and the vertical supporting 12 being supported between 11 bottom of bracing members and bottom of foundation ditch, bracing members 11 are used to support
Foundation pit wall 10 prevents foundation pit deformation of wall from collapsing, and vertical supporting 12 plays the role of supporting bracing members 11.Bracing members 11 into one
Step includes at least one first support unit 111 and one second support unit 112, and the first support unit 111 and the second support list
Member 112 is abutted each other along same axis.
The axle power compensation system of large deep foundation pit bracing members system in the present invention is mainly by being mounted on the ends of bracing members 11
The hydraulic servo device 13 in portion and be mounted between the first support unit 111 and the second support unit 112 14 liang of relay
Part forms, and the hydraulic servo device 13 for being mounted on 11 end of bracing members is main servo-system, is mounted on the first support unit 111
Relay 14 between the second support unit 112 is auxiliary servo-system, and hydraulic servo device 13 and relay 14 are assisted
Same-action, the common axle power compensation and adjustment for completing foundation pit steel support 11.
Hydraulic servo device 13 includes being connected to the end jack of 11 end of bracing members and connecting with end jack
Hydrauservo System, the end jack are hydraulic jack, can control the end jack by Hydrauservo System
Axle power.It, can be in purlin knot in order to avoid the recoil that end jack pair purlin structure 21 generates damages purlin structure 21
One segment type steel strengthening segment 22 is further set between structure 21 and end jack, and the recoil to avoid end jack is directly made
With the balance for destroying purlin structure 21 in purlin structure 21, diagonal brace may further be set in the two sides of the fashioned iron strengthening segment
23 carry out supporting.
Relay can solve bracing members axle power in Large Foundation Pit and be unevenly distributed as emphasis of the invention, and adjustment is difficult
Spend big problem.As shown in fig.3, relay includes relaying jack 140 and power transmission component, wherein relaying jack 140
It for hydraulic jack, is installed between the first support unit 111 and the second support unit 112, and relaying jack 140 can be with end
The Hydrauservo System of portion's jack connects, and utilizes the axle power of Hydrauservo System Collaborative Control relaying jack 140.Power transmission group
Part is set to the outside of relaying jack 140, the first end of power transmission component extend to 111 direction of the first support unit and with first
Support unit 111 is fixedly connected, the second end of power transmission component extend to 112 direction of the second support unit and with the second support unit
112 are slidably connected.In the present embodiment, power transmission component includes the first force transmitting board set on the opposite sides of relaying jack 140
141 and second force transmitting board 142, the first end and the first support unit of the first end of the first force transmitting board 141 and the second force transmitting board 142
111 are fixedly connected, and the second end of the second end of the first force transmitting board 141 and the second force transmitting board 142 and the second support unit 112 slide
Connection, and the second end for relaying jack 140 is that hydraulic thrust supports end, power transmission component one end is fixed as a result, and one end sliding is constituted
Similar to the force transfer structure of simply supported beam, allow to relay 140 axial free movement of jack, and play and share the first support unit
111 and second support unit 112 connecting node at moment of flexure and shearing effect, to relaying jack 140 can also play guarantor
Shield effect.
Cooperate shown in Fig. 4~7, in the present embodiment, the first support unit 111 and the second support unit 112 use I-shaped
Fashioned iron respectively includes web and the wing plate set on web two sides.The first end of first force transmitting board 141 and the second force transmitting board 142
First end and the wing plate of the first support unit 111 are bolted to connection；By the first force transmitting board 141 first end,
Correspondence opens up the bolt hole worn for bolt on the wing plate of the first end of two force transmitting boards 142 and the first support unit 111, by first
The first end of force transmitting board 141 fits in the upper surface of the upper flange of the first support unit 111, then fixes the two using bolt and connect
It connects；Likewise, the first end of the second force transmitting board 142 to be fitted in the lower surface of the lower wing plate of the first support unit 111, then use
The two is fixedly connected by bolt.
The two sides of the second end of first force transmitting board 141 are equipped with the first connecting plate 151, the second end of the second force transmitting board 142
Two sides are equipped with the second connecting plate 152, the first connecting plate 151 and the second connecting plate 152 and are made of L-type angle steel, and the one of L-type angle steel
Side and the first connecting plate 151 and the second connecting plate 152 weld, the L-type angle steel on the first connecting plate 151 and the second connecting plate 152
Another side be bonded to each other and offer bolt hole respectively, be fixedly connected using fastener, such as bolt, so that the first power transmission
Plate 141, the second force transmitting board 142, the first connecting plate 151 and the second connecting plate 152 are enclosed to be set for the second support unit 112 cunning
Slipping space 16.Second support unit 112 is slidedly arranged in slipping space 16, realizes that the hydraulic thrust of relaying jack 140 supports end
Axial free movement, and share the first support unit 111 and the moment of flexure at the connecting node of the second support unit 112 and cut
Power plays a protective role to relaying jack 140；Relaying jack 140 can be effectively kept using slipping space 16 simultaneously
It is axially moved track, it is ensured that effective transmitting of axle power.Further, in order to reduce the second support unit rubbing in slipping space 16
It wipes, divides between the second force transmitting board 142 and the second support unit 112 between the first force transmitting board 141 and the second support unit 112
Not She You antifriction separation layer, which can be inner surface and second force transmitting board 142 coated on the first force transmitting board 141
The anti-friction agent of inner surface is further ensured that freely transmitting to the axial force of relaying jack 140.
In the present embodiment, the first force transmitting board 141 and the second force transmitting board 142, which are respectively adopted, is relatively arranged on the first support list
The first angle steel 191 and the second angle steel 192 of the two sides of the wing plate of the wing plate and the second support unit 112 of member 111, in the first angle steel
191 and second are connected by angle cleat 193 between angle steel 192, and the first angle steel 191 and the second angle steel 192 are respectively L-type angle
Steel, bolt hole are provided with the surface of L-type angle steel.
The first end of relaying jack 140 keeps structure to connect with the first support unit 111 by a first axle, this
It includes set on the first end plate 181 of the first end of relaying jack 140, set on the first support unit 111 that one axis, which keeps structure,
End the second end plate 182 and the First Transition plate 183 that is connected between first end plate 181 and the second end plate 182；In
Second end after jack 140 keeps structure to connect with the second support unit 112 by a second axis, which keeps
Structure includes set on the third end plate 184 of the second end of relaying jack 140, set on the of the end of the second support unit 112
Four end plates 185 and the second transition plates 186 being connected between third end plate 184 and the 4th end plate 185.Utilize first axle
Keep structure and second axis that structure is kept to may insure the axis of relaying jack 140 and first support unit at its both ends
111 and second the axis of support unit 112 on the same line or be parallel to each other, and overcome due to 111 He of the first support unit
Both caused by the end out-of-flatness of second support unit 112 and relaying jack 140 can not smooth connection defect.Into one
Step, between first end plate 181 and the surrounding corner of the second end plate 182 and the surrounding of third end plate 184 and the 4th end plate 185
Bolt is respectively adopted between corner to be attached, to reinforce the knot that first axle keeps structure and first axle keeps structure itself
Structure intensity.
Further, can be in the case where relaying jack failure conditions, power transmission component can be connected by screw bolts or weld in sliding side
It connects, substitution relaying jack transmits axle power.When being connected by screw bolts, only need in advance the of the first force transmitting board of power transmission component
The corresponding installation offered for installing locking part between the second end of two ends and the second force transmitting board and the wing plate of the second support unit
Hole is fixed, easy to use, significant effect in the case where relaying jack failure conditions with locking part, such as bolt.
The present invention is used for the relay of large deep foundation pit bracing members system axle power compensation by being mounted on foundation pit steel support
The hydraulic servo device of end and the relay being mounted among foundation pit steel support act synergistically, and complete foundation pit steel support jointly
Axle power compensation and adjustment；Wherein, relay is using relaying jack and power transmission component composition, the first end of power transmission component
Fixing end is fixedly connected with the first support unit, and the second end of power transmission component is free end, is slided and is connected with the second support unit
It connects, effective transmitting of the axial force to relaying jack can be effectively ensured using power transmission component；Power transmission component one end is fixed, and one
End sliding, constitutes the force transfer structure for being similar to simply supported beam, allows to relay jack axial free movement, and play and share bracing members
The effect of moment of flexure and shearing at connecting node, plays a protective role to jack；In order to reduce friction, power transmission component and first
Anti-friction agent is set between support unit and the second support unit, guarantees freely transmitting to the axial force of relaying jack；Into one
Step, in the case where relaying jack failure conditions, power transmission component can be connected by screw bolts or weld in sliding side and fix with bracing members,
Substitution relaying jack transmits axle power.
Relay using the present invention for the compensation of large deep foundation pit bracing members system axle power carries out applying for axle power compensation
Work is as follows:
(1) pit earthwork excavates, and installs purlin structure, and assembled foundation pit steel support installs hydraulic servo device, installation relaying
Device.
(2) start Hydrauservo System, first adjust the pressure of the end jack of hydraulic servo device to design value
70%, the relaying jack of relay is then adjusted, keeps the pressure value of two groups of jack equal, and is equal to design value.
(3) during foundation pit construction, when pressure is less than design value in the middle part of bracing members system, start Hydrauservo System,
Relaying jack is first adjusted, makes its pressure increase to the 110% of design value, then adjustment end jack, makes two groups of jack
Pressure be equal to design value.When pressure is greater than design value in the middle part of bracing members system, start Hydrauservo System, first adjusts relaying
Jack reduces its pressure to the 90% of design value, and then end jack, makes the pressure of two groups of jack be equal to design
Value.
Compared with prior art, the axle power compensation system of large deep foundation pit bracing members system of the present invention has the advantages that
The axle power compensation system of large deep foundation pit bracing members system uses hydraulic jack to bracing members system through the invention
Top carries out axle power compensation, and the active control to foundation pit deformation may be implemented, and reduces influence of the foundation pit construction to environment；
By hydraulic servo device and the mutually coordinated effect of relay, large deep foundation pit overlength bracing members knot can be overcome
The problem of structure Stress non-homogeneity is distributed, solves the problems, such as the temperature benefit and compatibility of deformation in bracing members system use process.
It is described the invention in detail above in conjunction with accompanying drawings and embodiments, those skilled in the art can basis
Above description makes many variations example to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention,
The present invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (3)
1. a kind of relay for the compensation of large deep foundation pit bracing members system axle power, bracing members system includes being supported in foundation pit
Interior bracing members, the bracing members include at least one first support unit and one second support unit, first support unit
It is abutted each other with second support unit along same axis, it is characterised in that: the relay includes being installed on described the
Relaying jack between one support unit and second support unit and the biography being installed on the outside of the relaying jack
The first end of power component, the power transmission component extends to first support unit direction and fixes with first support unit
The second end of connection, the power transmission component, which extends to second support unit direction and slides with second support unit, to be connected
It connects；
Wherein, power transmission component includes the first force transmitting board and the second force transmitting board set on the opposite sides of relaying jack, and described the
The first end of one force transmitting board and the first end of second force transmitting board are fixedly connected on first support unit；Described first passes
The two sides of the second end of power plate are equipped with the first connecting plate, and the two sides of the second end of second force transmitting board are equipped with the second connecting plate,
First force transmitting board, second force transmitting board, first connecting plate and second connecting plate are enclosed for second
The sliding slipping space set of support unit；The first end of the relaying jack is connected to first support unit, the relaying thousand
The second end on jin top is that hydraulic thrust supports end.
2. relay as described in claim 1, it is characterised in that: the first end of the relaying jack passes through a first axle
Line keeps structure to connect with first support unit, and it includes being set to the relaying jack that the first axle, which keeps structure,
The first end plate of first end, set on the end of first support unit the second end plate and be connected to the first end plate
First Transition plate between second end plate；
The second end of the relaying jack keeps structure to connect with second support unit by a second axis, and described the
It includes set on the third end plate of the second end of the relaying jack, set on second support unit that two axis, which keep structure,
4th end plate of end and the second transition plates being connected between the third end plate and the 4th end plate.
3. relay as claimed in claim 2, it is characterised in that: the relaying jack be hydraulic jack, it is described in
Second end after jack supports end for hydraulic thrust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235249.4A CN106869140B (en) | 2016-01-13 | 2016-01-13 | A kind of relay for the compensation of large deep foundation pit bracing members system axle power |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235249.4A CN106869140B (en) | 2016-01-13 | 2016-01-13 | A kind of relay for the compensation of large deep foundation pit bracing members system axle power |
| CN201610019010.9A CN105569053B (en) | 2016-01-13 | 2016-01-13 | A kind of axle power compensation system of large deep foundation pit bracing members system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019010.9A Division CN105569053B (en) | 2016-01-13 | 2016-01-13 | A kind of axle power compensation system of large deep foundation pit bracing members system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106869140A CN106869140A (en) | 2017-06-20 |
| CN106869140B true CN106869140B (en) | 2019-03-08 |
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ID=55879640
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710235249.4A Active CN106869140B (en) | 2016-01-13 | 2016-01-13 | A kind of relay for the compensation of large deep foundation pit bracing members system axle power |
| CN201610019010.9A Active CN105569053B (en) | 2016-01-13 | 2016-01-13 | A kind of axle power compensation system of large deep foundation pit bracing members system |
| CN201710235286.5A Active CN106978813B (en) | 2016-01-13 | 2016-01-13 | The anti-failure power transmission component of the relay of large deep foundation pit bracing members system |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019010.9A Active CN105569053B (en) | 2016-01-13 | 2016-01-13 | A kind of axle power compensation system of large deep foundation pit bracing members system |
| CN201710235286.5A Active CN106978813B (en) | 2016-01-13 | 2016-01-13 | The anti-failure power transmission component of the relay of large deep foundation pit bracing members system |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN106869140B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437157B (en) * | 2016-11-11 | 2020-02-21 | 上海市机械施工集团有限公司 | Grouping regulation and control method for axial force of steel support structure |
| CN106522240B (en) * | 2016-11-11 | 2019-03-12 | 上海市机械施工集团有限公司 | A kind of two-way bracing members are synchronous to apply prestressed construction method |
| CN106638614B (en) * | 2016-11-11 | 2019-01-18 | 上海市机械施工集团有限公司 | A kind of the dynamic regulation system and dynamic regulation method of two-way steel support structure |
| CN106522238A (en) * | 2016-11-11 | 2017-03-22 | 上海市机械施工集团有限公司 | Axial loading method for steel supports |
| CN106638623B (en) * | 2017-02-20 | 2018-07-27 | 长江勘测规划设计研究有限责任公司 | Load-compensating support device and method |
| CN107964959A (en) * | 2017-12-05 | 2018-04-27 | 广州鑫桥建筑工程有限公司 | A kind of prefabricated assembled concrete support system |
| CN110359466A (en) * | 2019-07-08 | 2019-10-22 | 中国建筑第八工程局有限公司 | Mechanical self-latching type hydraulic servo end construction and its construction method |
| CN110965560A (en) * | 2019-12-31 | 2020-04-07 | 上海市机械施工集团有限公司 | Foundation pit steel supporting structure and foundation pit steel supporting system |
| CN111877357B (en) * | 2020-07-12 | 2022-02-08 | 福建岩土工程勘察研究院有限公司 | Deep foundation pit concrete support axial force compensation method |
| CN114922196A (en) * | 2022-05-23 | 2022-08-19 | 上海建工一建集团有限公司 | Overlong distributed shrinkage compensation concrete supporting structure and construction method |
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| JPH0988105A (en) * | 1995-09-20 | 1997-03-31 | Kajima Corp | Excavation method for underground structure |
| CN101799023A (en) * | 2010-02-11 | 2010-08-11 | 上海建工（集团）总公司 | Self-adaptive hydraulic servo system of axial force of foundation pit steel support |
| CN203530989U (en) * | 2013-09-28 | 2014-04-09 | 福建工程学院 | Deep foundation pit shoring retaining wall steel pipe concrete supporting assembly |
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| CN204199297U (en) * | 2014-09-12 | 2015-03-11 | 中国建筑第八工程局有限公司 | Bracing members axle force compensating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5911014B2 (en) * | 1981-09-21 | 1984-03-13 | 丸紅建材リ−ス株式会社 | firework parts |
| 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 |
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- 2016-01-13 CN CN201710235249.4A patent/CN106869140B/en active Active
- 2016-01-13 CN CN201610019010.9A patent/CN105569053B/en active Active
- 2016-01-13 CN CN201710235286.5A patent/CN106978813B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988105A (en) * | 1995-09-20 | 1997-03-31 | Kajima Corp | Excavation method for underground structure |
| CN101799023A (en) * | 2010-02-11 | 2010-08-11 | 上海建工（集团）总公司 | Self-adaptive hydraulic servo system of axial force of foundation pit steel support |
| CN203530989U (en) * | 2013-09-28 | 2014-04-09 | 福建工程学院 | Deep foundation pit shoring retaining wall steel pipe concrete supporting assembly |
| CN203795436U (en) * | 2014-04-17 | 2014-08-27 | 中铁六局集团天津铁路建设有限公司 | Combined internal support structure |
| CN204199297U (en) * | 2014-09-12 | 2015-03-11 | 中国建筑第八工程局有限公司 | Bracing members axle force compensating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105569053A (en) | 2016-05-11 |
| CN106978813A (en) | 2017-07-25 |
| CN106978813B (en) | 2019-05-17 |
| CN106869140A (en) | 2017-06-20 |
| CN105569053B (en) | 2017-08-04 |
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