CN103867210B - A kind of city underground list branch-cut bridge excavating construction method - Google Patents
A kind of city underground list branch-cut bridge excavating construction method Download PDFInfo
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- CN103867210B CN103867210B CN201410123794.0A CN201410123794A CN103867210B CN 103867210 B CN103867210 B CN 103867210B CN 201410123794 A CN201410123794 A CN 201410123794A CN 103867210 B CN103867210 B CN 103867210B
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Abstract
The invention discloses a kind of city underground list branch-cut bridge excavating construction method, comprise the following steps: the construction 1) first carrying out applying transverse passage-way two lining structure, and on transverse passage-way, add plate in two lining structures, the construction of right-side channels is carried out by benching tunnelling method, then carried out the construction of left-hand channel by middle hole method, in work progress, first carry out the construction of middle hole ingate, carried out the construction of left hole ingate again by benching tunnelling method, carry out the construction of the right ingate finally by CRD method; 2) carry out the construction of secondary lining, in work progress, carry out the construction of the construction of inverted arch, the construction of side wall and crown successively.The present invention can improve the safety factor of construction, ensures construction quality, accelerating construction progress.
Description
Technical field
The invention belongs to constructing tunnel field, be specifically related to a kind of city underground list branch-cut bridge excavating construction method.
Background technology
The transverse passage-way position of single branch-cut bridge construction is selected most important, the position of unreasonable layout transverse passage-way, tunnel will to be made in digging process by light section to large cross section excavation, and occur the anti-phenomenon drawn, thus cause difficulty of construction to increase, risk improves, quality reduces, and progress is slow, when behind selecting properly transverse passage-way position, transverse passage-way enters in large section tunnel excavation construction, easily causes transverse passage-way structure crack, the soil body to cave in and surface settlement equivalent risk.In subway double-side approach tunnel two-lining structure construction both at home and abroad at present, multiple tracks need be set up and support, and operation is loaded down with trivial details, not easy to operate.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, provide a kind of city underground list branch-cut bridge excavating construction method, this construction method can improve the safety factor of construction, ensures construction quality, accelerating construction progress.
For achieving the above object, city underground list branch-cut bridge excavating construction method of the present invention, is characterized in that, comprise the following steps:
1) construction applying transverse passage-way two lining structure is first carried out, and on transverse passage-way, add plate in two lining structures, the construction of right-side channels is carried out by benching tunnelling method, when constructing to Km, then carried out the construction of left-hand channel by middle hole method, in work progress, first carry out the construction of middle hole ingate, when construct to Km time, then by benching tunnelling method by left hole horse-head ingate to Km, finally by CRD method carry out the right ingate construction;
2) temporary support in inverted arch thickness range in Zhong Dong, Zuo Dong and right hole is removed respectively, the concreting of inverted arch is carried out again in each hole, and return support, then the temporary support within the scope of side wall thicknesses in Zhong Dong, Zuo Dong and right hole is removed respectively, in each hole, carry out side wall concrete again build, and return support, finally remove the temporary support in crown thickness range in Zhong Dong, Zuo Dong and right hole again, and crown two lining structure of constructing in each hole, and then remove all temporary support in each hole.
K≥10。
The present invention has following beneficial effect:
City underground list branch-cut bridge excavating construction method of the present invention is in the process of construction, first carry out the construction applying transverse passage-way two lining structure, then the construction of right-side channels is carried out by benching tunnelling method, last in the construction being carried out left-hand channel by middle hole method, in the process that left-hand channel is constructed, first carry out the construction of middle hole ingate, then the construction of left side ingate is carried out by benching tunnelling method, the construction of the right ingate is carried out finally by CRD method, thus effectively reduce the difficulty of construction, improve the safety of construction, in the process of carrying out Second Lining Construction, by carrying out the construction of inverted arch successively, the construction of side wall and the construction of crown, thus saving construction cost, increase construction benefit, ensure the quality of construction, have highly application value.
Accompanying drawing explanation
Fig. 1 is the structural representation of constructing tunnel process in the present invention;
Fig. 2 is the structural representation of two lining structure constructions in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to figure 1 and Fig. 2, city underground list branch-cut bridge excavating construction method of the present invention comprises the following steps:
1) construction applying transverse passage-way two lining structure is first carried out, and on transverse passage-way, add plate in two lining structures, the construction of right-side channels is carried out by benching tunnelling method, when constructing to Km, then carried out the construction of left-hand channel by middle hole method, in work progress, first carry out the construction of middle hole ingate, when construct to Km time, then by benching tunnelling method by left hole horse-head ingate to Km, finally by CRD method carry out the right ingate construction;
2) temporary support in inverted arch thickness range in Zhong Dong, Zuo Dong and right hole is removed respectively, the concreting of inverted arch is carried out again in each hole, and return support, then the temporary support within the scope of side wall thicknesses in Zhong Dong, Zuo Dong and right hole is removed respectively, in each hole, carry out side wall concrete again build, and return support, last temporary support of removing again in Zhong Dong, Zuo Dong and right hole in crown thickness range, and in each hole, carry out the construction of crown two lining structure, and then remove all temporary support in each hole.
K≥10。
Obviously, described embodiment is only the present invention's part embodiment, instead of all; Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of protection of the invention.
Claims (2)
1. a city underground list branch-cut bridge excavating construction method, is characterized in that, comprise the following steps:
1) construction applying transverse passage-way two lining structure is first carried out, and on transverse passage-way, add plate in two lining structures, the construction of right-side channels is carried out by benching tunnelling method, when constructing to K rice, then carried out the construction of left-hand channel by middle hole method, in work progress, first carry out the construction of middle hole ingate, when construct to K rice time, then by benching tunnelling method by left hole horse-head ingate to K rice, carry out the construction of right hole ingate finally by CRD method;
2) temporary support in inverted arch thickness range in Zhong Dong, Zuo Dong and right hole is removed respectively, the concreting of inverted arch is carried out again in each hole, and return support, then the temporary support within the scope of side wall thicknesses in Zhong Dong, Zuo Dong and right hole is removed respectively, in each hole, carry out side wall concrete again build, and return support, last temporary support of removing again in Zhong Dong, Zuo Dong and right hole in crown thickness range, and in each hole, carry out the construction of crown two lining structure, and then remove all temporary support in each hole.
2. city underground list branch-cut bridge excavating construction method according to claim 1, is characterized in that, K >=10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123794.0A CN103867210B (en) | 2014-03-28 | 2014-03-28 | A kind of city underground list branch-cut bridge excavating construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123794.0A CN103867210B (en) | 2014-03-28 | 2014-03-28 | A kind of city underground list branch-cut bridge excavating construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867210A CN103867210A (en) | 2014-06-18 |
| CN103867210B true CN103867210B (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410123794.0A Expired - Fee Related CN103867210B (en) | 2014-03-28 | 2014-03-28 | A kind of city underground list branch-cut bridge excavating construction method |
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| Country | Link |
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| CN (1) | CN103867210B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630140B (en) * | 2018-12-14 | 2020-10-30 | 中交路桥建设有限公司 | Dynamic partition pit guiding method for large-section gradual change tunnel to penetrate through weak surrounding rock stratum |
| CN109681233B (en) * | 2019-01-03 | 2024-06-04 | 济南城建集团有限公司 | Inverted T-shaped excavation construction method and temporary support structure for urban shallow-buried large-section tunnel by adopting prefabricated support duct pieces |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155233A (en) * | 2011-04-21 | 2011-08-17 | 上海市城市建设设计研究院 | Tunnel excavation construction method |
| CN102226399A (en) * | 2011-06-02 | 2011-10-26 | 中铁二院工程集团有限责任公司 | Soft rock four-line large-span tunnel three-bench cable-bracing excavation construction method |
| CN102704939A (en) * | 2012-06-26 | 2012-10-03 | 中国建筑第五工程局有限公司 | Combined steel temporary supporting excavation method for tunnel with extra-large section |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5577284B2 (en) * | 2011-03-29 | 2014-08-20 | 三井住友建設株式会社 | Tunnel lining back surface filling method and tunnel lining back surface filling device |
-
2014
- 2014-03-28 CN CN201410123794.0A patent/CN103867210B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155233A (en) * | 2011-04-21 | 2011-08-17 | 上海市城市建设设计研究院 | Tunnel excavation construction method |
| CN102226399A (en) * | 2011-06-02 | 2011-10-26 | 中铁二院工程集团有限责任公司 | Soft rock four-line large-span tunnel three-bench cable-bracing excavation construction method |
| CN102704939A (en) * | 2012-06-26 | 2012-10-03 | 中国建筑第五工程局有限公司 | Combined steel temporary supporting excavation method for tunnel with extra-large section |
Non-Patent Citations (1)
| Title |
|---|
| 地铁渡线地段大断面浅埋暗挖综合施工技术研究;张炳根;《现代隧道技术》;20070430;第44卷(第2期);第25-30页 * |
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| CN103867210A (en) | 2014-06-18 |
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Granted publication date: 20151230 Termination date: 20180328 |