CN102691508A - Large-diameter pipe-roof structure for advance support of underground engineering and construction method - Google Patents
Large-diameter pipe-roof structure for advance support of underground engineering and construction method Download PDFInfo
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- CN102691508A CN102691508A CN2012101463143A CN201210146314A CN102691508A CN 102691508 A CN102691508 A CN 102691508A CN 2012101463143 A CN2012101463143 A CN 2012101463143A CN 201210146314 A CN201210146314 A CN 201210146314A CN 102691508 A CN102691508 A CN 102691508A
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Abstract
The invention relates to a large-diameter pipe-roof structure for advance support of underground engineering and a construction method. The pipe-roof structure includes large-diameter steel pipes, steel reinforcement cages with supports and a concrete. The steel pipes of the pipe-roof structure connect sequentially and segmentally and every segment steel pipe follows sequentially in the process of boring. Welding connection is used between segment steel pipes; a bore bit is withdrawn after steel pipes of pipe roofs are completed. The steel reinforcement cages are mounted segmentally in the steel pipes and connected with each other by welding or connectors. The concrete is injected in the steel pipes where the steel reinforcement cages are arranged and the pipe-roof structure containing reinforced concrete in the steel pipes is formed after arranging the steel reinforcement cages is finished. The pipe-roof structure in the invention has good structural strength, high flexural rigidity and excellent application value and popularization prospects.
Description
Technical field
The present invention relates to a kind of pipe booth structure and job practices thereof, particularly a kind of large diameter pipe booth structure and job practices that is used for the underground construction advance support.
Background technology
Conventional pipe canopy worker method is before tunnel excavation, to hole at certain intervals along the excavated section profile; Insert steel pipe; Slip casting in the steel pipe that inserts again increases the shear strength of the outer country rock of steel pipe, thereby safeguards and increased the self-supporting ability of weak surrounding rock; Keep adjoining rock stability, what prevent that tunnel excavation from causing caves in.The pipe canopy also is applied in the tunneling construction of city underground engineering at present, when thin weak loose soil layer that covers and the construction of unfavorable geology stratum, through large diameter pipe canopy advance support is set, can reach the purpose of maximum control stratum settlement.In the shallow buried and underground excavated engineering project of city, be strict controlled deformation, the pipe canopy diameter that is adopted has the trend of continuous increase, to increase the rigidity of pipe canopy.The present invention proposes; In the construction of shallow buried covered excavation Large Underground Structure, adopt large diameter pipe canopy to form frame, bear superstratum deadweight and road vehicles overload; And through design of section, rationally arrangement of reinforcement and material are selected to make it have enough bending rigidities, satisfy the Deformation control requirement.Under the protection of this kind pipe canopy frame, carry out fairly large soil excavation, satisfy Large Underground Structure fast, the requirement of safe construction.
Summary of the invention
Based on the problems referred to above, the present invention proposes a kind of large diameter pipe booth structure and job practices that is used for the underground construction advance support, its purpose is to provide that a kind of diameter is big, intensity is high, rigidity is big, is used for the pipe booth structure of underground construction advance support.
The technical scheme that the present invention adopts is following:
A kind of large diameter pipe booth structure that is used for the underground construction advance support; It is characterized in that: said pipe booth structure is that the elongated reinforcing cage of the belt supporting frame that welds or be connected to form by the elongated steel pipe that forms through segmentation steel pipe welding, concrete and through the segmentation reinforcing cage combines; Described elongated reinforcing cage places in the elongated steel pipe; Support is welded in elongated reinforcing cage bottom, and places between elongated reinforcing cage and the elongated steel pipe inwall, makes elongated reinforcing cage place elongated steel pipe middle part; Elongated steel pipe having put into elongated reinforcing cage is injected with concrete, and said elongated steel pipe, elongated reinforcing cage and concrete form whole through the combination bonding.
Described a kind of large diameter pipe booth structure that is used for the underground construction advance support; Said each section length of elongated steel pipe is 3m ~ 6m, and diameter is 300mm ~ 1500mm, and wall thickness is 6mm ~ 22mm; Elongated steel pipe segmentation is inserted in the boring, adopts between each segmentation steel pipe to be welded to connect.
Described a kind of large diameter pipe booth structure that is used for the underground construction advance support; Said elongated reinforcing cage segmentation is inserted in the said elongated steel pipe; Adopt welding or connector to connect between each segmentation reinforcing cage; Be welded with some supports in elongated reinforcing cage bottom, the joint of the longitudinal reinforcement of elongated reinforcing cage is staggeredly arranged.
Described a kind of large diameter pipe booth structure that is used for the underground construction advance support, the joint of elongated steel pipe and the joint of elongated reinforcing cage are staggeredly arranged, and the joint of the two is not in same cross section.
Wherein, reinforcing cage is inserted in segmentation in the elongated steel pipe of said pipe booth structure, and reinforcing cage is to be processed by longitudinal reinforcement, spiral stirrup colligation, reinforcing cage section length 3m ~ 6m, and total length is identical with the length of said pipe boron steel pipe; Vertical muscle should adopt HRB400 level and HRB335 grade reinforcing steel, also can adopt HPB235 level and RRB400 grade reinforcing steel, and diameter is 16mm ~ 32mm.
Wherein, having put into the pipe canopy pouring concrete within steel pipe of reinforcing cage, for ease of concrete spouting; Can adopt pea gravel concreten; Be meant that generally maximum size of coarse aggregate is not more than the concrete of 15mm, form that strength grade of concrete is not less than C20 by cement, water, sand with less than the coarse aggregate of 15mm.
Above-mentioned a kind of job practices that is used for the large diameter pipe booth structure of underground construction advance support is:
The first step: construct space enclosing structure planning to build the underground construction both sides,,, in the Guan Peng service depot, horizontal directional drilling machine is installed as the Guan Peng service depot at space enclosing structure one side excavation strip foundation ditch;
Second step:, make in the first section short steel pipes follow-up hole that constitutes elongated steel pipe through jacking simultaneously along the design attitude directional drilling of pipe booth structure;
The 3rd step: move back and bore and the spreading drilling rod, lay simultaneously and through being welded to connect the intermediate standard section steel pipe of the elongated steel pipe of next section formation; Continue to creep into, make in the intermediate standard section steel pipe follow-up boring of spreading through jacking simultaneously;
The 4th step: repeated for the 3rd step, until the intermediate standard section steel pipe that installs quantity; Lay and through being welded to connect the final stage afterbody short steel pipes that constitutes elongated steel pipe; Continue to creep into, make in the afterbody short steel pipes follow-up boring of spreading through jacking simultaneously, satisfy the design length of pipe booth structure;
The 5th step: send into the first section bar dowel cage that constitutes elongated reinforcing cage in the elongated steel pipe, reserve certain-length so that be connected with next section intermediate standard section reinforcing cage;
The 6th the step: lay the elongated reinforcing cage of next section formation intermediate standard section reinforcing cage and with the preceding paragraph connect the back in elongated steel pipe, advance, this section intermediate standard section reinforcing cage stays certain-length so that be connected with next section intermediate standard section reinforcing cage;
The 7th step: repeated for the 6th step, until the intermediate standard section reinforcing cage that installs quantity; Lay and through being welded to connect the final stage afterbody bar dowel cage that constitutes elongated reinforcing cage, and send in the elongated steel pipe, elongated length of reinforcing cage is met design requirement;
The 8th step: pumping of concrete in the elongated steel pipe that contains elongated reinforcing cage, make elongated steel pipe, elongated reinforcing cage, the concrete form integral body, promptly formed the large diameter pipe booth structure that steel pipe includes steel concrete.
Beneficial effect
The present invention is used for the large diameter pipe booth structure and the job practices of underground construction advance support, has added reinforcing cage in the steel pipe, has been full of concrete; Steel pipe, reinforcing bar and the concrete combining structure of good integrity have been formed; Improved the bending rigidity and the supporting capacity of pipe canopy, can reduce because the pipe shed support effect is better brought into play in the stressed excessive excessive deflection deformation that causes the pipe canopy of pipe canopy; Can resist the effect of road surface and stratum load; The pipe canopy arrange through solid matter or each other interlock form frame, carrying out soil excavation construction operation below it under this frame protection, guaranteed that the excavation construction of underground construction is safer, carried out more efficiently.
Description of drawings
Fig. 1 is a shed frame method construction large diameter pipe booth structure arrangement diagram of the present invention;
Fig. 2 is a large diameter pipe canopy profile of the present invention;
Fig. 3 is segmentation steel pipe splicing figure of the present invention;
Fig. 4 is segmentation reinforcing cage splicing figure of the present invention;
Fig. 5 is a pipe booth structure overall diagram of the present invention;
Among the figure: 1, ground; 2, Guan Peng service depot; 3, underground utilities; 4, diaphragm wall; 5, elongated steel pipe; 6, stirrup; 7, longitudinal reinforcement; 8, concrete; 9, support; 10, first section short steel pipes; 11, intermediate standard section steel pipe; 12, afterbody short steel pipes; 13, first section bar dowel cage; 14, intermediate standard section reinforcing cage; 15, afterbody bar dowel cage; 16, elongated reinforcing cage; 17, steel pipe solder joint; 18, logical Long Pipe-shed; 19, excavation zone.
The specific embodiment
Provide the shed frame method construction embodiment of shallow embedding Large Underground Structure under the urban road below; Shed frame method adopts diaphragm wall 4 to come retaining soil and water as space enclosing structure, and the opposing lateral deformation is through being provided with the load that the large diameter pipe canopy bears ground 1 and stratum; And protection underground utilities; Under the protection of head tube canopy frame, the excavation soil body, and adopt lid to dig partly and carry out main structure construction along the method for making half contrary work.In conjunction with accompanying drawing, large diameter pipe booth structure and the job practices that is used for the underground construction advance support of the present invention further specified.
The pipe booth structure is that the elongated reinforcing cage 16 of the belt supporting frame 9 that welds or be connected to form by the elongated steel pipe 5 that forms through segmentation welding, concrete eight and through segmentation combines; Elongated reinforcing cage 16 places in the elongated steel pipe 5; Support 9 is welded in elongated reinforcing cage 16 bottoms; And place between elongated reinforcing cage 16 and elongated steel pipe 5 inwalls; Make elongated reinforcing cage 16 place elongated steel pipe 5 middle parts, be injected with concrete eight at the elongated steel pipe 5 of having put into elongated reinforcing cage 16, elongated steel pipe 5, elongated reinforcing cage 16 form whole with concrete eight through the combination bonding.Wherein, elongated steel pipe 5 each section length are 3m ~ 6m, and diameter is 300mm ~ 1500mm, and wall thickness is 6mm ~ 22mm, and elongated steel pipe 5 segmentations are inserted in the boring, adopt between each segmentation steel pipe to be welded to connect.Elongated reinforcing cage 16 segmentations are inserted in the said elongated steel pipe 5, adopt welding or connector to connect between each segmentation reinforcing cage, are welded with some supports 9 in elongated reinforcing cage 16 bottoms, and the joint of the longitudinal reinforcement 7 of elongated reinforcing cage 16 is staggeredly arranged.The joint of the joint of elongated steel pipe 5 and elongated reinforcing cage 16 is staggeredly arranged, and the joint of the two is not in same cross section.
Its job practices is:
Above-mentioned a kind of job practices that is used for the large diameter pipe booth structure of underground construction advance support is:
The first step: construct space enclosing structure planning to build the underground construction both sides, at space enclosing structure one side excavation strip foundation ditch, as Guan Peng service depot 2, installation horizontal directional drilling machine Guan Peng service depot 2 in;
Second step:, make in first section short steel pipes, the 10 follow-up holes that constitute elongated steel pipe 5 through jacking simultaneously along the design attitude directional drilling of pipe booth structure;
The 3rd step: move back and bore and the spreading drilling rod, lay simultaneously and through being welded to connect the intermediate standard section steel pipe 11 of the elongated steel pipe 5 of next section formation; Continue to creep into, make in the intermediate standard section steel pipe 11 follow-up borings of spreading through jacking simultaneously;
The 4th step: repeated for the 3rd step, until the intermediate standard section steel pipe 11 that installs quantity; Lay and through being welded to connect the final stage afterbody short steel pipes 12 that constitutes elongated steel pipe 5; Continue to creep into, make in the afterbody short steel pipes 12 follow-up borings of spreading through jacking simultaneously, satisfy the design length of pipe booth structure;
The 5th step: send into the first section bar dowel cage 13 that constitutes elongated reinforcing cage 16 in the elongated steel pipe 5, reserve certain-length so that be connected with next section intermediate standard section reinforcing cage 14;
The 6th step: lay the intermediate standard section reinforcing cage 14 of the elongated reinforcing cage 16 of next section formation and connect back propelling in elongated steel pipe 5 with the preceding paragraph, this section intermediate standard section reinforcing cage 14 stays certain-length so that be connected with next section intermediate standard section reinforcing cage 14;
The 7th step: repeated for the 6th step, until the intermediate standard section reinforcing cage 14 that installs quantity; Lay and through being welded to connect the final stage afterbody bar dowel cage 15 that constitutes elongated reinforcing cage 16, and send in the elongated steel pipe 5, elongated reinforcing cage 16 length are met design requirement;
The 8th step: pumping of concrete 8 in the elongated steel pipe 5 that contains elongated reinforcing cage 16, make elongated steel pipe 5, elongated reinforcing cage 16, the concrete eight form integral body, promptly formed the large diameter pipe booth structure that steel pipe includes steel concrete.
Claims (5)
1. large diameter pipe booth structure that is used for the underground construction advance support; It is characterized in that: said pipe booth structure is that the elongated reinforcing cage (16) of the belt supporting frame (9) that welds or be connected to form with connector by the elongated steel pipe (5) that forms through segmentation steel pipe welding, concrete (8) and through the segmentation reinforcing cage combines; Described elongated reinforcing cage (16) places in the elongated steel pipe (5); Support (9) is welded in elongated reinforcing cage (16) bottom; And place between elongated reinforcing cage (16) and elongated steel pipe (5) inwall; Make elongated reinforcing cage (16) place elongated steel pipe (5) middle part, be injected with concrete (8) at the elongated steel pipe (5) of having put into elongated reinforcing cage (16), said elongated steel pipe (5), elongated reinforcing cage (16) form whole with concrete (8) through the combination bonding.
2. a kind of large diameter pipe booth structure that is used for the underground construction advance support according to claim 1; It is characterized in that: each section length of said elongated steel pipe (5) is 3m ~ 6m; Diameter is 300mm ~ 1500mm; Wall thickness is 6mm ~ 22mm, and elongated steel pipe (5) segmentation is inserted in the boring, adopts between each segmentation steel pipe to be welded to connect.
3. a kind of large diameter pipe booth structure that is used for the underground construction advance support according to claim 1; It is characterized in that: said elongated reinforcing cage (16) segmentation is inserted in the said elongated steel pipe (5); Adopt welding or connector to connect between each segmentation reinforcing cage; Be welded with some supports (9) in elongated reinforcing cage (16) bottom, the joint of the longitudinal reinforcement (7) of elongated reinforcing cage (16) is staggeredly arranged.
4. a kind of large diameter pipe booth structure that is used for the underground construction advance support according to claim 1 is characterized in that: the joint of the joint of elongated steel pipe (5) and elongated reinforcing cage (16) is staggeredly arranged, and the joint of the two is not in same cross section.
5. one kind according to the described job practices that is used for the large diameter pipe booth structure of underground construction advance support of one of claim 1-4, and it is characterized in that: concrete steps are following
The first step: construct space enclosing structure planning to build the underground construction both sides, at space enclosing structure one side excavation strip foundation ditch, as Guan Peng service depot (2), installation horizontal directional drilling machine Guan Peng service depot (2) in;
Second step:, make in first section short steel pipes (10) follow-up hole that constitutes elongated steel pipe (5) through jacking simultaneously along the design attitude directional drilling of pipe booth structure;
The 3rd step: move back and bore and the spreading drilling rod, lay simultaneously and through being welded to connect the intermediate standard section steel pipe (11) of the elongated steel pipe of next section formation (5); Continue to creep into, make in intermediate standard section steel pipe (11) the follow-up boring of spreading through jacking simultaneously;
The 4th step: repeated for the 3rd step, until the intermediate standard section steel pipe (11) that installs quantity; Lay and through being welded to connect the final stage afterbody short steel pipes (12) that constitutes elongated steel pipe (5); Continue to creep into, make in afterbody short steel pipes (12) the follow-up boring of spreading through jacking simultaneously, satisfy the design length of pipe booth structure;
The 5th step: send into the first section bar dowel cage (13) that constitutes elongated reinforcing cage (16) in the elongated steel pipe (5), reserve certain-length so that be connected with next section intermediate standard section reinforcing cage (14);
The 6th step: lay the intermediate standard section reinforcing cage (14) of the elongated reinforcing cage of next section formation (16) and connect back propelling in elongated steel pipe (5) with the preceding paragraph, this section intermediate standard section reinforcing cage (14) stays certain-length so that be connected with next section intermediate standard section reinforcing cage (14);
The 7th step: repeated for the 6th step, until the intermediate standard section reinforcing cage (14) that installs quantity; Lay and through being welded to connect the final stage afterbody bar dowel cage (15) that constitutes elongated reinforcing cage (16), and send in the elongated steel pipe (5), elongated reinforcing cage (16) length is met design requirement;
The 8th step: pumping of concrete (8) in the elongated steel pipe (5) that contains elongated reinforcing cage (16); That elongated steel pipe (5), elongated reinforcing cage (16), concrete (8) are formed is whole, has promptly formed the large diameter pipe booth structure that steel pipe includes steel concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101463143A CN102691508A (en) | 2012-05-11 | 2012-05-11 | Large-diameter pipe-roof structure for advance support of underground engineering and construction method |
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| CN2012101463143A CN102691508A (en) | 2012-05-11 | 2012-05-11 | Large-diameter pipe-roof structure for advance support of underground engineering and construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781591A (en) * | 2016-01-26 | 2016-07-20 | 中铁二十二局集团第工程有限公司 | Pipe roof support structure |
| CN106677806A (en) * | 2016-12-12 | 2017-05-17 | 中国矿业大学 | Pipe type shed frame supporting structure used for down-hole roadway and tunnel |
| CN108561139A (en) * | 2018-04-09 | 2018-09-21 | 中国水利水电第五工程局有限公司 | A kind of horizontal reinforcement concrete steel pile pile pre support method |
| CN110057517A (en) * | 2019-05-21 | 2019-07-26 | 平潭综合实验区交通投资集团有限公司 | The lead pipe-shed support structure of its own vertical deflection can be measured by inclinometer |
| CN111188638A (en) * | 2020-04-01 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Advanced support pipe shed structure under silty-fine sand geological condition and construction method thereof |
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| JP2001207788A (en) * | 2000-01-28 | 2001-08-03 | East Japan Railway Co | Limited backfilling injection work method in underground structure construction method |
| CN102174894A (en) * | 2011-03-15 | 2011-09-07 | 中铁十二局集团第一工程有限公司 | Follow-up pipe shed construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781591A (en) * | 2016-01-26 | 2016-07-20 | 中铁二十二局集团第工程有限公司 | Pipe roof support structure |
| CN106677806A (en) * | 2016-12-12 | 2017-05-17 | 中国矿业大学 | Pipe type shed frame supporting structure used for down-hole roadway and tunnel |
| CN106677806B (en) * | 2016-12-12 | 2019-03-26 | 中国矿业大学 | A kind of tubular type canopy frame support structure for underworkings, tunnel |
| CN108561139A (en) * | 2018-04-09 | 2018-09-21 | 中国水利水电第五工程局有限公司 | A kind of horizontal reinforcement concrete steel pile pile pre support method |
| CN110057517A (en) * | 2019-05-21 | 2019-07-26 | 平潭综合实验区交通投资集团有限公司 | The lead pipe-shed support structure of its own vertical deflection can be measured by inclinometer |
| CN111188638A (en) * | 2020-04-01 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Advanced support pipe shed structure under silty-fine sand geological condition and construction method thereof |
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Application publication date: 20120926 |