CN106869140A - 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
- CN106869140A CN106869140A CN201710235249.4A CN201710235249A CN106869140A CN 106869140 A CN106869140 A CN 106869140A CN 201710235249 A CN201710235249 A CN 201710235249A CN 106869140 A CN106869140 A CN 106869140A
- Authority
- CN
- China
- Prior art keywords
- support unit
- jack
- bracing members
- relay
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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 with the second support unit along same axis；Relay includes the power transmission component for being installed on the relaying jack between the first support unit and the second support unit and being installed on the outside of relaying jack, 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, second end of power transmission component is free end, it is slidably connected with the second support unit, effective transmission of the axial force to relaying jack can be ensured using power transmission component.
Description
Technical field
It is the present invention relates to pattern foundation pit supporting structure field more particularly to a kind of for the compensation of large deep foundation pit bracing members system axle power
Relay.
Background technology
Large deep foundation pit engineering can improve efficiency of construction using the type steel support system of pin-connected panel, reduce Construction on Environment
Influence.It is well known that the axle power compensation device of routine is typically mounted at the end of supporting construction, it is impossible in solving Large Foundation Pit
Axial force of the supports skewness, the big problem of adjustment difficulty.And the steel support structure of overlength exist with temperature Change stretch with
And axle power is the problems such as spatial distribution is uneven, the safety for playing or even jeopardizing support system of influence bracing members efficiency, therefore need
Built-up shaft force compensating device and corresponding adjusting method are set in bracing members system, wanting for Large Scale Deep Foundation Pit Support is adapted to
Ask.
The content of the invention
The technical problems to be solved by the invention be 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 skewness in Large Foundation Pit, the big problem of adjustment difficulty.
To realize above-mentioned technique effect, the invention discloses it is a kind of for large deep foundation pit bracing members system axle power compensation
Relay, bracing members system includes the bracing members being supported in foundation ditch, and the bracing members include at least one first support unit
With one second support unit, first support unit abuts 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 to the described second support
Cell orientation extends and is slidably connected with second support unit.
Of the invention further improvement be, the first end of the relaying jack by a first axle holding structure with
The first support unit connection, the first axle holding structure includes first of the first end located at the relaying jack
End plate, the second end plate located at the end of first support unit and it is connected to the first end plate and second end
First Transition plate between plate；
Second end of the relaying jack is connected by a second axis holding structure with second support unit, institute
Stating second axis holding structure includes the 3rd end plate at the second end for being located at the relaying jack, supports single located at described second
4th end plate of the end of unit and the second rebound being connected between the 3rd end plate and the 4th end plate.
Of the invention further improvement be, the relaying jack is hydraulic jack, the of the relaying jack
Two ends are that hydraulic thrust supports end.
The present invention makes it have following beneficial effect as a result of above technical scheme：
1st, using relaying jack and power transmission component composition, the first end of power transmission component is fixing end to relay, 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, using power transmission group
Part can ensure effective transmission of the axial force to relaying jack；
2nd, power transmission component one end is fixed, and one end is slided, and constitutes the force transfer structure similar to simply supported beam, it is allowed to relay jack
Axial free movement, and play a part of to share moment of flexure and shearing at bracing members connecting node, guarantor is played to relaying jack
Shield is acted on.
Brief description of the drawings
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 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 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 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 generalized sections of Fig. 4.
Fig. 7 is the B-B generalized sections of Fig. 4.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further detailed explanation.
First, refering to shown in Fig. 1 and Fig. 2, large deep foundation pit bracing members system it is main by supporting construction, enclose the and of purlin structure 21
Axle power compensation system is constituted.Enclose purlin structure 21 to be set one week along foundation ditch wall 10, the bottom for enclosing purlin structure 21 is provided with A-frame
211, for supporting and positioning encloses purlin structure 21, as shown in Figure 2；In the corner for enclosing purlin structure 21, angle brace 212 can also be set,
As shown in figure 1, to strengthen enclosing resistance to overturning of the purlin structure 21 with foundation ditch wall 10.Supporting construction includes being supported in enclosing purlin structure
Bracing members 11 in 21 and the vertical supporting 12 being supported between the bottom of bracing members 11 and bottom of foundation ditch, bracing members 11 are used to support
Foundation ditch wall 10, prevents foundation ditch deformation of wall from caving in, and vertical supporting 12 plays a part of to support bracing members 11.Bracing members 11 enter 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 are single
Unit 112 abuts along same axis.
The axle power compensation system of the large deep foundation pit bracing members system in the present invention is main by installed in the end of bracing members 11
14 liang of the hydraulic servo device 13 in portion and the relay between the first support unit 111 and the second support unit 112
Part constitutes, and the hydraulic servo device 13 installed in the end of bracing members 11 is main servo-drive system, installed in the first support unit 111
It is auxiliary servo-drive system with the relay 14 between the second support unit 112, hydraulic servo device 13 is assisted with relay 14
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 the end of bracing members 11 and is connected with end jack
Hydrauservo System, the end jack is hydraulic jack, and the end jack can be controlled by Hydrauservo System
Axle power.Purlin structure 21 is enclosed in order to avoid the recoil that end jack pair encloses the generation of purlin structure 21 damages, purlin knot can enclosed
One segment type steel strengthening segment 22 is further set between structure 21 and end jack, is directly made with the recoil for avoiding end jack
The balance for enclosing purlin structure 21 is destroyed with purlin structure 21 is enclosed, diagonal brace can be further set in the both sides of the shaped steel strengthening segment
23 carry out supporting.
Relay can solve bracing members axle power skewness in Large Foundation Pit as emphasis of the invention, and adjustment is difficult
The big problem of degree.Refering to shown in Fig. 3, relay includes relaying jack 140 and power transmission component, wherein, relay jack 140
It is 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 connection of portion's jack, the axle power of jack 140 is relayed using Hydrauservo System Collaborative Control.Power transmission group
Part located at the outside of relaying jack 140, the first end of power transmission component extend to the direction of the first support unit 111 and with first
Support unit 111 is fixedly connected, the second end of power transmission component extend to the direction of the second support unit 112 and with the second support unit
112 are slidably connected.In the present embodiment, power transmission component includes the first force transmitting board of the opposite sides located at 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 is slided with the second support unit 112
Connection, and the second end of relaying jack 140 is that hydraulic thrust supports end, thus, power transmission component one end is fixed, and one end is slided, and constitutes
Similar to the force transfer structure of simply supported beam, it is allowed to relay the axial free movement of jack 140, 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 is acted on.
Coordinate shown in Fig. 4~7, in the present embodiment, the first support unit 111 and the second support unit 112 use I-shaped
Shaped steel, respectively including web and the wing plate located at web both sides.The first end of the first force transmitting board 141 and the second force transmitting board 142
First end is bolted to connection with the wing plate of the first support unit 111；By the first end in the first force transmitting board 141,
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 using bolt by both companies of fixation
Connect；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
Be fixedly connected for both by bolt.
The both sides at the second end of the first force transmitting board 141 are provided with the first connecting plate 151, the second end of the second force transmitting board 142
Both sides are provided with the second connecting plate 152, and the first connecting plate 151 and the second connecting plate 152 are made using L-type angle steel, and the one of L-type angle steel
Side is welded with the first connecting plate 151 and the second connecting plate 152, the L-type angle steel on the first connecting plate 151 and the second connecting plate 152
Another side it is bonded to each other and offer bolt hole respectively, using fastener, such as bolt is fixedly connected, 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 formed to be slided for the second support unit 112 and set
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 moment of flexure at the first support unit 111 and the connecting node of the second support unit 112 and cut
Power, plays a protective role to relaying jack 140；Can effectively keep relaying jack 140 using slipping space 16 simultaneously
It is axially moved track, it is ensured that effective transmission of axle power.Further, in order to reduce the second support unit rubbing in slipping space 16
Wipe, divide and 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
Antifriction separation layer is not provided with, and the antifriction separation layer can be the inner surface and the second force transmitting board 142 for being coated on the first force transmitting board 141
The anti-friction agent of inner surface, is further ensured that freely transmitting for the axial force to relaying jack 140.
In the present embodiment, the first force transmitting board 141 and the second force transmitting board 142 are respectively adopted and are relatively arranged on the first support list
First angle steel 191 and the second angle steel 192 of the both sides of the wing plate of the wing plate and the second support unit 112 of unit 111, in the first angle steel
191 and second are connected between angle steel 192 by angle cleat 193, and the first angle steel 191 and the second angle steel 192 are respectively L-type angle
Steel, bolt hole is opened in the surface of L-type angle steel.
The first end for relaying jack 140 is connected by a first axle holding structure with the first support unit 111, and this
One axis holding structure is including the first end plate 181 located at the first end for relaying jack 140, located at the first support unit 111
End the second end plate 182 and the First Transition plate 183 that is connected between the end plate 182 of first end plate 181 and second；In
It is connected with the second support unit 112 by a second axis holding structure after the second end of jack 140, the second axis keep
Structure includes the 3rd end plate 184, located at the end of the second support unit 112 the located at the second end of relaying jack 140
Four end plates 185 and the second rebound 186 being connected between the 3rd end plate 184 and the 4th end plate 185.Using first axle
Holding structure and second axis holding structure may insure to relay first support unit of the axis with its two ends of jack 140
111 and second the axis of support unit 112 on the same line or be parallel to each other, and overcome due to the He of the first support unit 111
Caused by the end out-of-flatness of the second support unit 112 and relaying jack 140 both cannot smooth connection defect.Enter one
Step, between the surrounding corner of the end plate 182 of first end plate 181 and second and the 3rd end plate 184 and the 4th end plate 185 surrounding
Bolt is respectively adopted between corner to be attached, to strengthen first axle holding structure with the first axle holding structure knot of itself
Structure intensity.
Further, can be in the case where jack failure conditions be relayed, power transmission component can be connected by screw bolts or weld side is slided
Connect, substitute relaying jack transmission axle power.When being connected by screw bolts, only need in advance power transmission component the first force transmitting board the
The corresponding installation offered for installing locking part between second end of two ends and the second force transmitting board and the wing plate of the second support unit
Hole, in the case where jack failure conditions are relayed, with locking part, such as bolt is fixed, easy to use, effect is significant.
The present invention is used for the relay of large deep foundation pit bracing members system axle power compensation by installed in foundation pit steel support
The hydraulic servo device of end and the relay in the middle of foundation pit steel support are acted synergistically, and foundation pit steel support is completed jointly
Axle power compensation and adjust；Wherein, using relaying jack and power transmission component composition, the first end of power transmission component is relay
Fixing end, is fixedly connected with the first support unit, and the second end of power transmission component is free end, is slided with the second support unit and connected
Connect, effective transmission 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 is slided, and constitutes the force transfer structure similar to simply supported beam, it is allowed 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
Between support unit and the second support unit anti-friction agent is set, it is ensured that the axial force to relaying jack is freely transmitted；Enter one
Step, in the case where jack failure conditions are relayed, power transmission component can be connected by screw bolts or weld and be fixed with bracing members in slip side,
Substitute relaying jack transmission axle power.
Applying for axle power compensation is carried out for the relay that large deep foundation pit bracing members system axle power is compensated using the present invention
Work is as follows：
(1) pit earthwork is excavated, and purlin structure is enclosed in installation, and assembled foundation pit steel support installs hydraulic servo device, installs relaying
Device.
(2) start Hydrauservo System, first adjust to design load the pressure of the end jack of hydraulic servo device
70%, the relaying jack of relay is then adjusted, make the pressure value of two groups of jack equal, and equal to design load.
(3) during foundation pit construction, when bracing members system middle part pressure is less than design load, Hydrauservo System is started,
First regulation relaying jack, makes its pressure increase to the 110% of design load, then adjustment end jack, makes two groups of jack
Pressure be equal to design load.When bracing members system middle part pressure is more than design load, start Hydrauservo System, first regulation relaying
Jack, makes its pressure reduce to the 90% of design load, and then end jack, makes two groups of pressure 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 following advantages that：
Hydraulic jack is used to bracing members system by the axle power compensation system of large deep foundation pit bracing members system of the present invention
Jacking row axle power is compensated, it is possible to achieve to the active control of foundation pit deformation, 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 distribution, solves the problems, such as the temperature benefit during bracing members system use and compatibility of deformation.
The present invention is described in detail above in association with drawings and Examples, those skilled in the art can basis
Described above makes many variations example to the present invention.Thus, some of embodiment details should not constitute limitation of the invention,
The scope that to be defined using appended claims of the present invention is used as protection scope of the present invention.
Claims (3)
1. it is a kind of for large deep foundation pit bracing members system axle power compensation relay, bracing members system include be supported in foundation ditch
Interior bracing members, the bracing members include at least one first support unit and one second support unit, first support unit
Abutted along same axis with second support unit, 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
Power component, the first end of the power transmission component extends to the first support unit direction and is fixed with first support unit
Connection, the second end of the power transmission component extends to the second support unit direction and slides company with second support unit
Connect.
2. relay as claimed in claim 1, it is characterised in that：The first end of the relaying jack passes through a first axle
Line holding structure is connected with first support unit, and the first axle holding structure is included located at the relaying jack
The first end plate of first end, the second end plate located at the end of first support unit and it is connected to the first end plate
And the First Transition plate between second end plate；
Second end of the relaying jack is connected by a second axis holding structure with second support unit, and described the
Two axis holding structures are including the 3rd end plate located at the second end of the relaying jack, located at second support unit
4th end plate of end and the second rebound being connected between the 3rd end plate and the 4th end plate.
3. relay as claimed in claim 2, it is characterised in that：It is described relaying jack be hydraulic jack, it is described in
Held for hydraulic thrust is supported after the second end of jack.
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 true CN106869140A (en) | 2017-06-20 |
| CN106869140B CN106869140B (en) | 2019-03-08 |
Family
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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Families Citing this family (9)
| 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 |
| 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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| JPS5911014B2 (en) * | 1981-09-21 | 1984-03-13 | 丸紅建材リ−ス株式会社 | firework parts |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105569053A (en) | 2016-05-11 |
| CN106869140B (en) | 2019-03-08 |
| CN106978813A (en) | 2017-07-25 |
| CN106978813B (en) | 2019-05-17 |
| CN105569053B (en) | 2017-08-04 |
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