CN207567780U - A kind of cap excavation method temporary support is made permanent structure and is supported with concrete - Google Patents

A kind of cap excavation method temporary support is made permanent structure and is supported with concrete Download PDF

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Publication number
CN207567780U
CN207567780U CN201721341871.5U CN201721341871U CN207567780U CN 207567780 U CN207567780 U CN 207567780U CN 201721341871 U CN201721341871 U CN 201721341871U CN 207567780 U CN207567780 U CN 207567780U
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China
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concrete
support
segment
supported
permanent
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CN201721341871.5U
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Inventor
许东
有智慧
贺红霞
刘生平
张福麟
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Guangzhou Metro Design and Research Institute Co Ltd
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Guangzhou Metro Design and Research Institute Co Ltd
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Abstract

Make permanent structure the utility model discloses a kind of cap excavation method temporary support to be supported with concrete, the concrete support thickness is less than top board structure built in advance thickness, and several through-holes are equipped between the concrete support upper surface and lower face, and the concrete support lower face both sides are equipped with inclined surface.A kind of cap excavation method temporary support of the utility model offer is made permanent structure and is supported with concrete, temporary support when concrete is supported on excavation of foundation pit as top board structure uses, can apply the part for being built into permanent top board structure by pouring again when main structure construction, so as to avoid occasioning a delay to concrete supporting removal duration and the wasting of resources the problems such as.

Description

A kind of cap excavation method temporary support is made permanent structure and is supported with concrete
Technical field
The utility model is related to subway station construction field, specifically a kind of cap excavation method temporary support is used as permanent structure Concrete supports.
Background technology
Subway station contacts landing ground and underground as the hinge website of urban track traffic, the Distribution Center of ground passenger flow Passenger traffic function, play increasingly important role.When subway station is built below turnpike road or transport hub, one As cap excavation method is used to build to ensure traffic above-ground, to ensure that station interior construction, equipment hoisting, shield such as are unearthed at the requirements, portion Station is divided to use half digging method construction.Since station pit area is larger and belongs to deep basal pit, half cap excavation method need to set inner support, examine Consider support and the connection of agent structure plate, generally supported using armored concrete (concrete).The most common method that performs is at present Top plate top is dug in agent structure lid, reinforced concrete support is separately provided to ensure deep pit monitor, treat that main structure construction is completed It is removed afterwards.
In the prior art, lid digs agent structure of the reinforced concrete support independently of station of subway station building enclosure, Need to carry out dismounting processing to going along with sb. to guard him support when constructing agent structure, not only can schedule delays, but also waste economically can be caused, Environmentally protective theory is not met.
Utility model content
To solve the deficiency in the prior art, the utility model provides a kind of cap excavation method temporary support as permanent structure concrete Support, temporary support when concrete is supported on excavation of foundation pit as top board structure are used, can be passed through again when main structure construction The part applied and be built into permanent top board structure is poured, so as to avoid occasioning a delay duration and the wasting of resources etc. to concrete supporting removal Problem.
To solve the above problems, a kind of cap excavation method temporary support of the utility model offer is made permanent structure and is supported with concrete, institute Concrete support thickness is stated less than top board structure built in advance thickness, it is described equipped with several through-holes between the concrete support upper surface and lower face Concrete support lower face both sides are equipped with inclined surface.
Preferably, the top board structure includes first segment top plate and second segment top plate, the first segment top plate is by setting It puts shearing resistance slot to connect with concrete support, the concrete support is by pouring Shi Jianhou as the second segment top plate.
Preferably, the concrete support side is equipped with several reinforcing bars, the first segment top plate is connected with concrete support Face is equipped with several reinforcing bar connectors, reinforcing bar connector described in the bar connecting, and the concrete support is filled out by concreting Reinforcing bar is buried as the second segment top plate.
Preferably, the concrete support is cuboid, the concrete support width central axes are upper along its length equidistant pre-buried There are several pipelines, the through-hole is formed by removing the pipeline.
Preferably, the top board structure both ends are equipped with fender post, the fender post includes first segment fender post and the Two sections of fender posts, the first segment fender post cross section are less than the second segment fender post cross section.
Preferably, the first segment fender post is equipped with concrete Guan Liang, the top with the second segment fender post junction Harden structure is set in the concrete Guan Liang.
Preferably, the pipeline is PVC pipeline.
Preferably, the inclined surface is symmetrically disposed on the concrete support bottom surface both sides, the inclined surface and horizontal plane institute It is angled 45 °.
Using above-mentioned preferred embodiment, compared with prior art, the utility model has the following advantages:1st, using in this programme Concrete support carries out station top board structure structure, and in excavation of foundation pit, concrete support can be used as top temporary support, in main body knot Structure is applied when building, and concrete support is without removing and can carry out pouring to apply building on the basis of concrete support, using concrete support as permanently A part for top board structure can both meet the construction needs of cap excavation method and half cap excavation method, it is ensured that construction safety, while be also avoided that The schedule delays brought to the dismounting of concrete support and the wasting of resources;2nd, the support of this programme concrete is reserved with laying and first segment top plate connects The space of reinforcing bar, i.e. concrete support and the thickness difference of top board structure built in advance thickness are connect, conjunction thickness difference is filled out by pouring, concrete support As the part in top board structure so as to permanently use, avoid station apply build after bothering and lead to interim concrete supporting removal The problems such as schedule delays of cause and the wasting of resources;3rd, PVC pipeline is embedded between this programme concrete support upper surface and lower face, subsequently Construction just forms ventilative through-hole after removing PVC pipeline, improves gas permeability when follow-up top plate pours, and concrete support bottom Face both sides are equipped with inclined surface, concrete can be further improved when subsequently being poured, both sides concreting is supported to support bottom to concrete The compaction rate in portion so as to not influence to pour the compaction rate and mechanical requirements of rear top board structure, uses more convenient reliable.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1:Top board structure concrete supports overlooking the structure diagram;
Fig. 2:Top board structure concrete supports main structure diagram;
Fig. 3:Concrete supporting section schematic cross-sectional view;
Wherein:1st, fender post, 11, concrete Guan Liang, 2, first segment top plate, 21, connector, 3, concrete support, 31, through-hole, 32, incline Inclined-plane.
Specific embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent Embodiment is selected to be only used for describing and explaining the present invention, is not used to limit the utility model.
A kind of cap excavation method temporary support as depicted is made permanent structure and is supported with concrete, and the concrete supports 3 thickness to be less than top Harden structure built in advance thickness, the concrete support and several through-holes 31 are equipped between 3 upper surfaces and lower face, and the concrete supports 3 lower faces two Side is equipped with inclined surface 32.
The top board structure includes first segment top plate 2 and second segment top plate, and the first segment top plate 2 is by setting shearing resistance slot It is connect with concrete support 3, by pouring Shi Jianhou as the second segment top plate, the concrete supports 3 sides for the concrete support 3 Several reinforcing bars are equipped with, the first segment top plate 2 supports 3 joint faces to be equipped with several reinforcing bar connectors 21 with the concrete, described Reinforcing bar connector 21 described in bar connecting, the concrete support 3 fills reinforcing bar by concreting becomes the second segment top plate.
The concrete support 3 is cuboid, if the concrete supports 3 width central axes to be equidistantly embedded with main pipe on along its length Road forms the through-hole 31 by removing the pipeline, and the pipeline is PVC pipeline;The first segment top plate 2 implemented in advance is in base It cheats construction period and digs plate as substitution, be connected using the side that cut and cover method excavates by concrete support 3 with foundation pit enclosure stake 1, covered It digs on the downside of plate and vertical supporting is carried out by interim column;The top board structure is divided into two parts:Built in advance partial panels pour portion with after Divide top plate;The top board structure point three steps construction:1) it is poured after built in advance partial panels, 2) set concrete support and do temporary support, 3) pouring Partial panels;The built in advance partial panels support 3 junctions to be equipped with shearing resistance slot with concrete, and concrete support 3 is aligned to apply with shearing resistance slot builds.
The top board structure both ends are equipped with fender post 1, and the fender post 1 includes first segment fender post and second segment is gone along with sb. to guard him Stake, the first segment fender post cross section are less than the second segment fender post cross section, and variable cross-section can be used in station fender post 1 Design, station top plate bearing top are semi-circular cross-section, are wholecircle section below bearing;The first segment fender post and described the Two sections of fender post junctions are equipped with concrete Guan Liang 11, and the top board structure is set in the concrete Guan Liang 11, and the inclined surface 32 is right Title is set to the concrete and supports 3 bottom surface both sides, and the inclined surface 32 is 45 ° with horizontal plane angulation.
The operation principle of the utility model:It is applied when building subway station using cap excavation method or half cap excavation method, applies that build thickness ratio pre- It builds the small concrete support of top board structure thickness and is used as interim top braces, carry out follow-up station and apply to build;Since top board structure is usual Based on structure finally apply and build content, the space of connection reinforcing bar is laid with since concrete support is reserved at this time, using concrete support as pushing up A part directly pours the inclination angle energy of top board structure, the PVC permeability cells reserved in concrete support and the setting of ground both sides in harden structure The air-tightness of top board structure after guarantee casting concrete, and conveniently pour the progress of work.
The advantages of the utility model:1st, station top board structure structure is carried out using concrete support in this programme, in excavation of foundation pit When, concrete support can be used as top temporary support, and when agent structure is applied and built, concrete support does not have to remove and can be in the concrete branch It carries out pouring to apply on the basis of support building, using concrete support as a part for permanent top board structure, can both meet cap excavation method and Ban Gai The construction of digging method needs, it is ensured that construction safety, while also it is avoided that the schedule delays brought to the dismounting that concrete supports and resource wave Take;2nd, the support of this programme concrete is reserved with the space that laying connect reinforcing bar with first segment top plate, i.e. concrete support and top board structure built in advance The thickness difference of thickness fills out conjunction thickness difference by pouring, and concrete support can regard the part in top board structure so as to permanently use, Avoid station apply build after to schedule delays caused by the trouble of interim concrete supporting removal and the wasting of resources the problems such as;3rd, it is our Case concrete supports and PVC pipeline is embedded between upper surface and lower face, and subsequent construction just forms ventilative lead to after removing PVC pipeline Hole improves gas permeability when follow-up top plate pours, and concrete support bottom surface both sides are equipped with inclined surface, when subsequently being poured The compaction rate that concrete supports both sides concreting to concrete support bottom can be further improved, so as to not influence to pour rear top plate The compaction rate and mechanical requirements of structure use more convenient reliable.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form Limitation, it is therefore every without departing from the content of the technical scheme of the utility model, according to the technical essence of the utility model to implementing above Example any modification, equivalent variations and the modification made, in the range of still falling within technical solutions of the utility model.

Claims (8)

1. a kind of cap excavation method temporary support is made permanent structure and is supported with concrete, which is characterized in that the concrete support thickness is less than top plate Structure built in advance thickness, is equipped with several through-holes between the concrete support upper surface and lower face, the concrete support lower face both sides are equipped with Inclined surface.
2. a kind of cap excavation method temporary support according to claim 1 is made permanent structure and is supported with concrete, which is characterized in that described Top board structure includes first segment top plate and second segment top plate, and the first segment top plate is connected by the way that shearing resistance slot is set to be supported with the concrete It connects, the concrete support is by pouring Shi Jianhou as the second segment top plate.
3. a kind of cap excavation method temporary support according to claim 2 is made permanent structure and is supported with concrete, which is characterized in that described Concrete support side is equipped with several reinforcing bars, and the first segment top plate is plugged into concrete support joint face equipped with several reinforcing bars Device, reinforcing bar connector described in the bar connecting, the concrete support fills reinforcing bar by concreting becomes the second segment Top plate.
4. a kind of cap excavation method temporary support according to claim 1 is made permanent structure and is supported with concrete, which is characterized in that described Concrete support is cuboid, and the concrete support width central axes are equidistantly embedded with several pipelines on along its length, by removing It states pipeline and forms the through-hole.
5. a kind of cap excavation method temporary support according to claim 1 is made permanent structure and is supported with concrete, which is characterized in that described Top board structure both ends are equipped with fender post, and the fender post includes first segment fender post and second segment fender post, the first segment Fender post cross section is less than the second segment fender post cross section.
6. a kind of cap excavation method temporary support according to claim 5 is made permanent structure and is supported with concrete, which is characterized in that described First segment fender post is equipped with concrete Guan Liang with the second segment fender post junction, and the top board structure is set on the concrete Guan Liang On.
7. a kind of cap excavation method temporary support according to claim 4 is made permanent structure and is supported with concrete, which is characterized in that described Pipeline is PVC pipeline.
8. a kind of cap excavation method temporary support according to claim 1 is made permanent structure and is supported with concrete, which is characterized in that described Inclined surface is symmetrically disposed on the concrete support bottom surface both sides, and the inclined surface is 45 ° with horizontal plane angulation.
CN201721341871.5U 2017-10-18 2017-10-18 A kind of cap excavation method temporary support is made permanent structure and is supported with concrete Active CN207567780U (en)

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CN201721341871.5U CN207567780U (en) 2017-10-18 2017-10-18 A kind of cap excavation method temporary support is made permanent structure and is supported with concrete

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109183848A (en) * 2018-08-10 2019-01-11 广东省建工设计院有限公司 A kind of Tunnel Design and building method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109183848A (en) * 2018-08-10 2019-01-11 广东省建工设计院有限公司 A kind of Tunnel Design and building method
CN109183848B (en) * 2018-08-10 2019-06-21 广东省建工设计院有限公司 A kind of Tunnel Design and building method

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Address after: 510010 No. 204 Huanshi West Road, Guangzhou City, Guangdong Province

Patentee after: Guangzhou Metro Design and Research Institute Co., Ltd.

Address before: 510010 No. 204 Huanshi West Road, Guangzhou City, Guangdong Province

Patentee before: Guangzhou Metro Design & Research Institute Co., Ltd.

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