CN205382942U - Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility - Google Patents
Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility Download PDFInfo
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- CN205382942U CN205382942U CN201521138844.9U CN201521138844U CN205382942U CN 205382942 U CN205382942 U CN 205382942U CN 201521138844 U CN201521138844 U CN 201521138844U CN 205382942 U CN205382942 U CN 205382942U
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Abstract
The utility model relates to a multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility belongs to the architectural engineering technology field for solve that traditional pipe -roof method only is applicable to that the buried depth is more shallow, individual layer underground space excavation and be not suitable for big section, long distance, multilayer underground space subsurface excavated construction's problem. This supporting construction includes that the symmetry sets up in the work well and the receiving well that plan to build underground space soil body both ends, and perpendicular to tunneling direction just sets up respectively in well and the receiving well a pair of parallel arrangement's of one side the underground continuous wall in opposite directions that works, and the symmetry sets up in planning to build a pair of steel -pipe pile envelope that the other both ends of the underground space soil body just are on a parallel with tunneling direction, set up in the pipe -roof who plans to build underground space soil body top, pipe -roof passes through the flat plate type structure that the fore shaft links to each other and constitutes for a plurality of steel pipes that set up side by side, and water stop material fills in fore shaft space department, still including setting up in the curtain support body system on the decurrent secret one deck of pipe -roof below successive layer to secret N layer, N is more than or equal to 2's integer.
Description
Technical field
This utility model relates to construction engineering technical field, particularly to the supporting construction of multi-layer underground space curtain posture boring construction under a kind of existing facility.
Background technology
Develop Underground Space Resource rationally and effectively and contribute to the sustainable development of megalopolis.In order to make full use of the underground space below the existing communal facilitys such as urban road, railway, airport, landscape green space, and require effectively control earth's surface deformation and reduce the construction impact on it as far as possible, it is generally adopted the trenchless technologies such as shield, push pipe, pipe curtain and constructs.But, shield, push pipe are owing to being subject to the restriction of equipment, structure cross-section dimensions and cost, it is impossible to meet the requirement of big cross section space excavation；Conventional pipe-roofing method is then by connector bearing capacity and the construction environment higher restriction of requirement is only applicable to buried depth is shallower, the excavation of the monolayer underground space.
Therefore, it is necessary to a kind of rich water soft clay area of exploitation, economical, safe and efficient, the supporting construction of big cross section distance multi-layer underground space curtain posture boring construction under existing communal facility.
Utility model content
The purpose of this utility model is in that to provide the supporting construction of multi-layer underground space curtain posture boring construction under a kind of existing facility, for solving tradition pipe-roof method and being only applicable to that buried depth is shallower, monolayer Underground Space Excavation and the problem that is not suitable for big cross section, distance, multi-layer underground space boring construction.
For solving above-mentioned technical problem, the technical solution of the utility model is as follows:
The supporting construction of multi-layer underground space curtain posture boring construction under existing facility, including being symmetricly set in the active well and received well of planning to build underground space soil body two ends, it is perpendicular to tunneling direction and is respectively arranged at the diaphram wall of pair of parallel setting of described active well and described received well side in opposite directions, plan to build the other two ends of the underground space soil body described in being symmetricly set in and be parallel to a pair steel pipe pile enclosure structure of tunneling direction；Planning to build the deferent curtain above the underground space soil body described in being arranged at, described pipe curtain is some steel pipes being arranged side by side to be connected the flat structure constituted by fore shaft, and sealing material is filled in described fore shaft gap；Also including being arranged at B1 successively downward below described pipe curtain to underground N shell N number of act of frame system altogether, N is the integer be more than or equal to 2.
Further, described B1 curtain frame system includes being configured to the frost wall in next layer soil body and temporary support, the described underground space B1 soil body of planning to build is divided into some unit along tunneling direction by described frost wall, and each described unit surrounding is wrapped up by described frost wall；It is arranged at the temporary support one in described frost wall, described temporary support one includes interim beam, interim horizontal support, vertical temporary support, static pressure steel-pipe pile and bridging, described interim beam and described interim horizontal support are respectively arranged at the two ends up and down of described vertical temporary support, described bridging is arranged between the adjacent described vertical temporary support of tunneling direction, described static pressure steel-pipe pile interts in the soil body being arranged at below adjacent vertical temporary support, and the top of described static pressure steel-pipe pile connects with described interim horizontal support.
Further, described underground N shell curtain frame system includes being arranged at the compacting grouting and reinforcing layer below B1 curtain frame system and temporary support two, described temporary support two is arranged in described compacting grouting and reinforcing layer in the space excavated, described temporary support two includes interim horizontal support, static pressure steel-pipe pile and bridging, described interim horizontal support is arranged at the bottom in described space and fixing with described static pressure steel-pipe pile is connected, and described bridging is arranged between adjacent two described static pressure steel-pipe piles of tunneling direction.
Further, described sealing material is water-stop or hydro-expansive rubber bar.
Further, it is connected by lengthening steel-pipe pile between described static pressure steel-pipe pile with described interim beam.
Further, described temporary support is made by H profile steel.
Compared with prior art, what this utility model was useful has the technical effect that the supporting construction of multi-layer underground space pipe curtain boring construction under existing facility of the present utility model, except the basic building enclosure planned to build around the underground space soil body that diaphram wall and steel pipe pile enclosure structure are formed, also include being positioned at the deferent curtain planned to build above the underground space soil body, this pipe curtain is plate, in controlling deformation, there is obvious advantage at the more traditional pipe-roof method of the excavation realizing the B1 earthwork, breach tradition pipe-roof method and be only applicable to the limitation of monolayer Underground Space Excavation；Setting gradually an act frame system below pipe curtain, frost wall and compacting grouting and reinforcing layer in curtain frame system ensure that the safety of construction environment in underground space soil excavation process；Static pressure steel-pipe pile in curtain frame system, and interim beam affixed with static pressure steel-pipe pile respectively, interim horizontal support and bridging, further ensure the overall stability under loading of the underground space structure after excavation and construction.This demolition of support structure is convenient, reusable, reduces cost.By the supporting construction of multi-layer underground space curtain posture boring construction under existing facility of the present utility model, carrying out that underground space construction not only underground space form of fracture is unrestricted but also Underground Space Excavation scale is unrestricted, construction application scope is wide.Additionally, this supporting construction does not affect existing facility above, pollution-free, noiseless when construction, and it is convenient to construct, and cost is low, cost-effective and environmentally friendly.
Accompanying drawing explanation
Fig. 1 is the floor map of the supporting construction of multi-layer underground space curtain posture boring construction under existing facility in this utility model embodiment one；
Fig. 2 is the a-a sectional view of Fig. 1；
Fig. 3 is the b-b sectional view of Fig. 1；
Fig. 4 is the structural representation of the supporting construction of multi-layer underground space curtain posture boring construction under existing facility in this utility model embodiment one.
In figure:
A-plans to build the underground space soil body；1-active well；2-received well；3-steel pipe pile enclosure structure, 31-active well building enclosure, 32-received well enclosure body；4-pipe curtain；5-frost wall；The vertical temporary support of 61-, the interim beam of 62-, the interim horizontal support of 63-, 64-bridging；7-static pressure steel-pipe pile；81-lengthens steel-pipe pile；82-displacement autocompensation installation.
Detailed description of the invention
It is described in further detail below in conjunction with the supporting construction of multi-layer underground space curtain posture boring construction under the drawings and specific embodiments existing facility to the utility model proposes.According to the following describes, advantage of the present utility model and feature will be apparent from.It should be noted that, accompanying drawing all adopts the form simplified very much and all uses non-ratio accurately, only in order to purpose convenient, aid illustration this utility model embodiment lucidly.For sake of convenience, described below " on ", the upper and lower direction of D score and accompanying drawing consistent, but this can not become the restriction of technical solutions of the utility model.
The supporting construction of multi-layer underground space curtain posture boring construction under existing facility of the present utility model is described in detail below in conjunction with Fig. 1 to Fig. 4.
Embodiment one
The present embodiment is planned to build the existing facility above underground space soil body A be establishing in large scale greenery patches, hard place mat formation, square and corresponding public service facility etc..According to designing requirement, in carrying out underground space construction process, it is necessary to ensureing that the existing facility being positioned above is kept intact, therefore, it is more complicated that this plans to build underground space construction environment, and difficulty of construction is big.In order to solve this problem, below in conjunction with Fig. 1 to Fig. 4, describe the supporting construction of multi-layer underground space curtain posture boring construction under existing facility of the present utility model in detail.In figure, a-a sectional view is the view being perpendicular to tunneling direction, and b-b sectional view is the view along tunneling direction.
As shown in Figures 1 to 4, the supporting construction of multi-layer underground space curtain posture boring construction under existing facility, including being symmetricly set in the active well 1 and received well 2 of planning to build underground space soil body A two ends, it is perpendicular to tunneling direction and is respectively arranged at the diaphram wall (31 of pair of parallel setting of active well 1 and received well 2 side in opposite directions, 32), it is symmetricly set in and plans to build the other two ends of underground space soil body A and be parallel to a pair steel pipe pile enclosure structure 3 of tunneling direction；Being arranged at the deferent curtain 4 planned to build above underground space soil body A, pipe curtain 4 is some steel pipes being arranged side by side to be connected the flat structure constituted by fore shaft, and sealing material is filled in fore shaft gap；Also including being arranged at B1 successively downward below pipe curtain 4 to underground N shell N number of act of frame system altogether, N is the integer be more than or equal to 2.
Specifically, the supporting construction of multi-layer underground space pipe curtain boring construction under existing facility of the present utility model, except the basic building enclosure planned to build around the underground space soil body that diaphram wall and steel pipe pile enclosure structure are formed, also include being positioned at the deferent curtain planned to build above the underground space soil body, this pipe curtain is plate, in controlling deformation, there is obvious advantage at the more traditional pipe-roof method of the excavation realizing the B1 earthwork, breach tradition pipe-roof method and be only applicable to the limitation of monolayer Underground Space Excavation；Setting gradually an act frame system below pipe curtain, frost wall and compacting grouting and reinforcing layer in curtain frame system ensure that the safety of construction environment in underground space soil excavation process；Static pressure steel-pipe pile in curtain frame system, and interim beam affixed with static pressure steel-pipe pile respectively, interim horizontal support and bridging, further ensure the overall stability under loading of the underground space structure after excavation and construction.Especially the bottom of static pressure steel-pipe pile is deeply planned to build in the soil body of below the underground structure bottom plate that the underground space is to be onstructed, and the buried depth of static pressure steel-pipe pile is more than the buried depth of steel pipe pile enclosure structure, thus the buried effect playing foundation stabilization and underground uplift pile in the part planning to build below underground space base plate of foundation pit of static pressure steel-pipe pile so that underground structure safety and stability.This demolition of support structure is convenient, reusable, reduces cost.By the supporting construction of multi-layer underground space curtain posture boring construction under existing facility of the present utility model, carrying out that underground space construction not only underground space form of fracture is unrestricted but also Underground Space Excavation scale is unrestricted, construction application scope is wide.Additionally, this supporting construction does not affect existing facility above, pollution-free, noiseless when construction, and it is convenient to construct, and cost is low, cost-effective and environmentally friendly.
It is preferred that steel pipe pile enclosure structure 3 is the waterproof pressure-resistant isolation strip adopting some steel-pipe piles of static pressure construction to connect formation side by side, its function is equivalent to diaphram wall.But compared with diaphram wall, steel pipe pile enclosure structure 3 efficiency of construction is high, and its cost is also well below diaphram wall.Certainly, in order to meet the rigidity requirement of steel pipe pile enclosure structure 3, it is the model of 14mm that this steel-pipe pile can select diameter to be 900mm, wall thickness, stake long according to design it needs to be determined that, furthermore, it is possible to strengthen the rigidity of steel pipe pile enclosure structure 3 by concrete perfusion core in steel-pipe pile.
Preferably, pipe curtain 4 is formed by some steel pipe horizontal Tiles, adjacent steel pipe is connected with each other by the fore shaft of side, sealing material is filled in fore shaft gap, the axis of steel pipe is consistent with tunneling direction, pipe curtain 4 is parallel to the two ends of tunneling direction and is respectively and fixedly connected with on steel pipe pile enclosure structure 3, and pipe curtain 4 is perpendicular to the two ends of tunneling direction and is suspended at respectively in active well 1 and received well 2.It is to say, the length of pipe curtain 4 is more than the clear distance between active well 1 and received well 2.Before push-bench export & import, pipe curtain 4 and steel pipe pile enclosure structure 3 and diaphram wall form a stable stress system, but during push-bench inlet and outlet cave, need the borehole wall through diaphram wall and active well 1 or received well 2, now pipe curtain 4 is perpendicular to the two ends vertical applied force shakiness of steel pipe pile enclosure structure 3, vertical supporting is added to solve foregoing problems, it is ensured that push-bench can safe inlet and outlet cave thereby through in the outstanding one end set of pipe curtain 4.Certainly, axis adjacent two steel pipes become placed against side by side parallel to each other and and the fore shaft place that plans to build between underground space soil body A can Formation cross-section infiltration space triangular in shape, affect safety of structure, therefore, sealing material is filled up in fore shaft, to form good waterproof construction, it is achieved water-proof function.In order to draw materials convenient and save cost, sealing material can select water-stop or hydro-expansive rubber bar etc., as long as meeting waterproof, water proof function.That is, by planning to build above underground space soil body A from active well 1 toward the pipe curtain 4 of received well 2 direction jacking steel pipe affixed one seal of formation, ensure that the stability planning to build underground space soil body A, controllably layer deformation, anti-collapse in advance, and because the existing facility such as the vegetation above pipe curtain 4 is affected less by the feature without mud.For meeting upper deposited solum settlement deformation requirements, different from the pipe curtain of conventional " umbrella arcuation ", the steel pipe forming pipe curtain 4 in the present embodiment adopts plane jacking construction, forms flat structure.
Especially, owing to freezing process carries out soil stabilization cost height, but soil stabilization is good, and the stability of the support system of B1 is descended to play very important effect in structure construction procedure entirely.Therefore, B1 soil stabilization adopts freezing consolidation, and remaining each layer soil body is reinforced and adopted press injecting method to reinforce.It is preferred that B1 curtain frame system includes the frost wall 5 and the temporary support one that are configured in next layer soil body, frost wall 5 will be planned to build underground space B1 soil body A and be divided into some unit along tunneling direction, and each unit surrounding is wrapped up by frost wall 5；It is arranged at the temporary support one in frost wall 5, temporary support one includes interim beam 62, interim horizontal support 63, vertical temporary support 61, static pressure steel-pipe pile 7 and bridging 64, interim beam 62 and interim horizontal support 63 are respectively arranged at the two ends up and down of vertical temporary support 61, bridging 64 is arranged between the adjacent vertical temporary support 61 of tunneling direction, in the interspersed soil body being arranged at below adjacent vertical temporary support 61 of static pressure steel-pipe pile 7, the top of static pressure steel-pipe pile 7 connects with interim horizontal support 63.
Preferably, underground N shell curtain frame system includes being arranged at the compacting grouting and reinforcing layer below B1 curtain frame system and temporary support two, temporary support two is arranged in compacting grouting and reinforcing layer in the space excavated, temporary support two includes interim horizontal support 63, static pressure steel-pipe pile 7 and bridging 64, interim horizontal support 63 is arranged at the bottom in space and fixing with static pressure steel-pipe pile 7 is connected, bridging 64 is arranged between adjacent two static pressure steel-pipe piles 7 of tunneling direction, is connected by lengthening steel-pipe pile 81 between static pressure steel-pipe pile 7 with interim beam 62.Certainly, in order to draw materials conveniently, saving cost, temporary support is made by H profile steel.
Additionally, due to the limitation of construction space, static pressure steel-pipe pile 7 cannot disposable directly be connected with the interim beam 62 of pipe curtain 4 bottom, but needs later stage pile connection construction.Therefore, arranging lengthening steel-pipe pile 81 between interim beam 62 and pipe curtain 4 so that the bottom on the top and pipe curtain 4 that lengthen steel-pipe pile is fixed and is connected, the top of the bottom and static pressure steel-pipe pile 7 that lengthen steel-pipe pile 81 is fixed and is connected.Certainly, in order to ensure the stability under loading of whole B1 curtain frame system, by calculating, the lengthening steel-pipe pile 81 at the core stress point place of static pressure steel-pipe pile 7 is replaced with displacement autocompensation installation 82.Displacement autocompensation installation 82 includes the displacement transducer of electrical connection, hydraulic cylinder, pressure sensing and monitoring and feed back control system, thus controlling the vertical deformation of B1 curtain frame system further, keeps structural stability.
Foregoing description is only the description to this utility model preferred embodiment; the not any restriction to this utility model scope; any change that the those of ordinary skill in this utility model field does according to the disclosure above content, modification, belong to the protection domain of claims.
Claims (6)
1. the supporting construction of multi-layer underground space curtain posture boring construction under existing facility, it is characterized in that, including being symmetricly set in the active well and received well of planning to build underground space soil body two ends, it is perpendicular to tunneling direction and is respectively arranged at the diaphram wall of pair of parallel setting of described active well and described received well side in opposite directions, plan to build the other two ends of the underground space soil body described in being symmetricly set in and be parallel to a pair steel pipe pile enclosure structure of tunneling direction；Planning to build the deferent curtain above the underground space soil body described in being arranged at, described pipe curtain is some steel pipes being arranged side by side to be connected the flat structure constituted by fore shaft, and sealing material is filled in described fore shaft gap；Also including being arranged at B1 successively downward below described pipe curtain to underground N shell N number of act of frame system altogether, N is the integer be more than or equal to 2.
2. supporting construction as claimed in claim 1, it is characterized in that, described B1 curtain frame system includes being configured to the frost wall in next layer soil body and temporary support, the described underground space B1 soil body of planning to build is divided into some unit along tunneling direction by described frost wall, and each described unit surrounding is wrapped up by described frost wall；It is arranged at the temporary support one in described frost wall, described temporary support one includes interim beam, interim horizontal support, vertical temporary support, static pressure steel-pipe pile and bridging, described interim beam and described interim horizontal support are respectively arranged at the two ends up and down of described vertical temporary support, described bridging is arranged between the adjacent described vertical temporary support of tunneling direction, described static pressure steel-pipe pile interts in the soil body being arranged at below adjacent vertical temporary support, and the top of described static pressure steel-pipe pile connects with described interim horizontal support.
3. supporting construction as claimed in claim 2, it is characterized in that, described underground N shell curtain frame system includes being arranged at the compacting grouting and reinforcing layer below B1 curtain frame system and temporary support two, described temporary support two is arranged in described compacting grouting and reinforcing layer in the space excavated, described temporary support two includes interim horizontal support, static pressure steel-pipe pile and bridging, described interim horizontal support is arranged at the bottom in described space and fixing with described static pressure steel-pipe pile is connected, and described bridging is arranged between adjacent two described static pressure steel-pipe piles of tunneling direction.
4. supporting construction as claimed in claim 1, it is characterised in that described sealing material is water-stop or hydro-expansive rubber bar.
5. supporting construction as claimed in claim 2, it is characterised in that be connected by lengthening steel-pipe pile between described static pressure steel-pipe pile with described interim beam.
6. supporting construction as claimed in claim 2, it is characterised in that described temporary support is made by H profile steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521138844.9U CN205382942U (en) | 2015-12-31 | 2015-12-31 | Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility |
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| CN201521138844.9U CN205382942U (en) | 2015-12-31 | 2015-12-31 | Multilayer underground space curtain posture subsurface excavated construction's supporting construction under existing facility |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448005A (en) * | 2017-08-21 | 2017-12-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of existing underground space carries out the device of horizontal expansion using no-dig technique mode |
| CN109339827A (en) * | 2018-11-12 | 2019-02-15 | 上海建工集团股份有限公司 | The excavating construction method of multi-layer underground structure |
| CN112901213A (en) * | 2021-03-04 | 2021-06-04 | 中铁七局集团有限公司 | Underground roof construction method based on pipe curtain support |
-
2015
- 2015-12-31 CN CN201521138844.9U patent/CN205382942U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448005A (en) * | 2017-08-21 | 2017-12-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of existing underground space carries out the device of horizontal expansion using no-dig technique mode |
| CN109339827A (en) * | 2018-11-12 | 2019-02-15 | 上海建工集团股份有限公司 | The excavating construction method of multi-layer underground structure |
| CN112901213A (en) * | 2021-03-04 | 2021-06-04 | 中铁七局集团有限公司 | Underground roof construction method based on pipe curtain support |
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