CN102071948A - Door type composite pipe roof umbrella arch structure for tunnel opening and construction method thereof - Google Patents
Door type composite pipe roof umbrella arch structure for tunnel opening and construction method thereof Download PDFInfo
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- CN102071948A CN102071948A CN 201110044651 CN201110044651A CN102071948A CN 102071948 A CN102071948 A CN 102071948A CN 201110044651 CN201110044651 CN 201110044651 CN 201110044651 A CN201110044651 A CN 201110044651A CN 102071948 A CN102071948 A CN 102071948A
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Abstract
The invention discloses a door type composite pipe roof umbrella arch structure for a tunnel opening and a construction method thereof. The structure comprises a pipe roof umbrella arch positioned on the top part of the tunnel opening and pre-reinforced piles positioned on the two sides of the tunnel opening; the pipe roof umbrella arch is connected with the pre-reinforced piles and supported by the pre-reinforced piles; the top ends of the pre-reinforced piles are fixedly connected with a top cover beam; and bagged backfill is filled between the top cover beam and the pipe roof umbrella arch. The construction method comprises the following steps: firstly excavating at the two sides of the tunnel opening, pouring the pre-reinforced piles, and pre-burying connecting sleeves in the piles; then, excavating the section of the pipe roof umbrella arch and keeping the core soil; inserting connecting reinforcing steel bars into the connecting sleeves, and pouring the pipe roof umbrella arch at the same time so that the pipe roof umbrella arch is fixedly connected with the pre-reinforced piles integrally; meanwhile, reserving a pipe roof sleeve in the pipe roof umbrella arch, and setting long pipe roof; and finally, filling bagged backfill above the pipe roof umbrella arch and pouring the top cover beam to finish the construction. The door type composite pipe roof umbrella arch structure disclosed by the invention is more stable, has relatively good mechanical property, and can effectively prevent the collapse of the tunnel opening and slippage of edge and slope.
Description
Technical field
The present invention relates to the ruggedized construction and the job practices thereof of traffic tunnel, hole ruggedized construction and job practices thereof when relating in particular to a kind of constructing tunnel.
Background technology
Tunnel portal is the throat in tunnel, and the hole part is usually relatively broken soft on geology, is easy to unstability and forms and come down, cave in etc.Therefore, whether the hole section stablizes difficulty or ease and the operation safety that is directly connected to constructing tunnel.In the mountain tunnel construction,, reinforce to carry out the hole section by setting up the long tube canopy for the standing pipe canopy cover arch of putting in the soft location, hole of fragmentation.Yet, be in the situation of closing on stable state for the face of land, although performed the long tube canopy, carry out tunneling when construction, section limit, hole, facing upward the slope and cracking, slippage still may occur, causing sinking excessive in the hole in, conventional pipe canopy cover arch is shifted cracking, and then causes the hole cave-in accident.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of Stability Analysis of Structures, mechanical property better, can prevent effectively that tunnel portal from caving in and the limit, face upward the gate-type clad pipe canopy cover arch structure that is used for tunnel portal that hill wash moves, also correspondingly provide that a kind of construction sequence is simple, efficiency of construction is high, construction economy and the safety gate-type clad pipe canopy job practices of overlapping arch structure preferably.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of gate-type clad pipe canopy cover arch structure that is used for tunnel portal, described gate-type clad pipe canopy cover arch structure comprises the pipe canopy cover arch that is positioned at the tunnel portal top and is positioned at the pre-reinforcing stake of tunnel portal both sides, the two ends of described pipe canopy cover arch are connected with the pre-reinforcing stake of both sides respectively, and should manage canopy cover arch by pre-reinforcing pile bearing; The pre-top that reinforces stake is connected with roof rail, is filled with packed backfill between described roof rail and described pipe canopy cover arch.
As further improvement to above-mentioned gate-type clad pipe canopy cover arch structure, be embedded with splicing sleeve in the described pre-reinforcing stake, the two ends of described pipe canopy cover arch are connected with described pre-reinforcing stake by the connecting reinforcement that inserts this splicing sleeve.
The above-mentioned gate-type clad pipe canopy cover arch structure that is used for tunnel portal preferably is provided with the long tube canopy in the described roof rail.
As a total technical conceive, the job practices that the present invention also provides a kind of above-mentioned gate-type clad pipe canopy to overlap arch structure may further comprise the steps:
(1) construction is pre-reinforces stake: at tunnel portal both sides excavation, cast is pre-reinforces stake, and in stake pre-buried splicing sleeve;
(2) tunneling pipe canopy cover arch: the pipe canopy cover arch section of tunneling, and the core soil of reservation tunnel excavation section;
(3) insert connecting reinforcement: in the splicing sleeve of described pre-reinforcing stake, insert connecting reinforcement;
(4) construction pipe canopy cover arch: gate spool canopy cover arch, make pipe canopy cover arch affixed in aggregates by connecting reinforcement and described pre-reinforcing stake, provided pipe canopy sleeve pipe in this pipe canopy cover arch is provided with the long tube canopy in pipe canopy sleeve pipe simultaneously;
(5) construction roof rail: after the concrete of described pipe canopy cover arch reaches design strength, filling bag reinstalls and bankets above pipe canopy cover arch, and pours into a mould roof rail above packed backfill, provided pipe canopy sleeve pipe in this roof rail, and in pipe canopy sleeve pipe, the long tube canopy is set, finish construction.
Compared with prior art, the invention has the advantages that:
(1) gate-type clad pipe canopy of the present invention cover arch adopted pre-reinforce that stake combines with roof rail fall " U " shape hole ruggedized construction, it will show the performance of excellence more in structural strength, stability and outside on stressed;
(2) adopt gate-type clad pipe canopy cover arch structure of the present invention can more effectively prevent caving in of sinking in the hole, tunnel and hole, improve the safety and the efficiency of construction of constructing tunnel greatly;
(3) adopt gate-type clad pipe canopy cover arch structure of the present invention can more effectively prevent two slopes (side slope of tunnel portal and face upward the slope) slippage, further improve the safety and the efficiency of construction of constructing tunnel;
(4) job practices of the present invention operation is easy relatively, and the efficiency of construction height can significantly reduce the height of construction and excavation, improves the economy and the efficiency of construction of construction.
Description of drawings
Fig. 1 is the front view of the gate-type clad pipe canopy cover arch structure in the embodiment of the invention.
Fig. 2 is the lateral view of the gate-type clad pipe canopy cover arch structure in the embodiment of the invention.
Fig. 3 is the vertical view of the gate-type clad pipe canopy cover arch structure in the embodiment of the invention.
Fig. 4 is the partial enlarged drawing at A place among Fig. 1.
Marginal data
1. pipe canopy cover encircles; 11. pipe canopy sleeve pipe; 12. long tube canopy; 2. pre-reinforcing stake; 21. splicing sleeve; 22. connecting reinforcement; 3. face upward the slope; 4. core soil; 5. roof rail; 6. packed backfill.
The specific embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is further described.
Embodiment:
A kind of gate-type clad pipe canopy cover arch structure that is used for tunnel portal as Fig. 1～the present invention shown in Figure 4, this gate-type clad pipe canopy cover arch structure comprises the pipe canopy cover arch 1 that is positioned at the tunnel portal top and is positioned at the pre-reinforcing stake 2 of tunnel portal both sides, this pipe canopy cover arch 1 is by pre-reinforcing stake 2 supportings, and the two ends of pipe canopy cover arch 1 are connected with the pre-reinforcing stake 2 of both sides respectively.In the present embodiment, the end of pipe canopy cover arch 1 specifically is connected in pre-reinforcing stake position on the upper side, 2 middle parts.Be embedded with splicing sleeve 21 pre-the reinforcing in the stake 2, the two ends of pipe canopy cover arch 1 are that the connecting reinforcement 22 by inserting this splicing sleeve 21 is reinforced 2 and is connected with pre-.Be connected with roof rail 5 on the pre-top that reinforces stake 2, roof rail 5 and 1 of pipe canopy cover arch are filled with packed backfill 6.All be embedded with equally distributed pipe canopy sleeve pipe 11 and the long tube canopy 12 that passes this pipe canopy sleeve pipe 11 in pipe canopy cover arch 1 and the roof rail 5.
The job practices of the gate-type clad pipe canopy cover arch structure that is used for tunnel portal of present embodiment may further comprise the steps:
1. construction is pre-reinforces stake: in a certain geology weakness, broken location, traffic tunnel hole, earlier at tunnel portal both sides excavation, cast is pre-reinforces stake 2, and intends the pre-buried splicing sleeve 21 in relevant position of tube connector canopy cover arch in stake;
2. tunneling pipe canopy cover encircles: the section and the basis, both sides of tunneling pipe canopy cover arch remained on the gradient of facing upward slope 3 of tunnel upper 1: 1, and keep the core soil 4 of tunnel excavation;
3. insertion connecting reinforcement: after the pipe canopy cover arch section excavation, in the pre-splicing sleeve 21 of reinforcing stake 2, insert connecting reinforcement 22;
4. construction pipe canopy overlaps arch: gate spool canopy cover arch 1, and it is affixed in aggregates with pre-reinforcing stake 2 by connecting reinforcement 22 to make the pipe canopy overlap arch 1, encircles the steel tube canopy sleeve pipe 11 of reserving φ 127mm in 1 at this pipe canopy cover simultaneously, performs long tube canopy 12 in pipe canopy sleeve pipe 11;
5. construction roof rail: after the concrete of pipe canopy cover arch 1 reaches design strength, filling bag reinstalls and bankets 6 above pipe canopy cover arch 1, and pours into a mould roof rail 5 above packed backfill 6, provided pipe canopy sleeve pipe 11 in this roof rail 5, and in pipe canopy sleeve pipe 11, long tube canopy 12 is set, finish construction.
After the construction of the gate-type clad pipe canopy of present embodiment cover arch structure is finished, can carry out follow-up advancing wide openly to dig, the construction of inverted arch and inverted arch backfill.In follow-up tunnel excavation work progress, because the pipe canopy at hole cover arch forms a stressed integral body with the pre-reinforcing stake and the top roof rail of both sides, this can be avoided when excavation is got out of a predicament or an embarrassing situation, owing to the unsettled pipe canopy that causes in pipe canopy cover skewback plinth bottom overlaps the sinking and the cracking of arch, thereby can improve the safety and the economy of constructing tunnel process greatly.
Claims (4)
1. a gate-type clad pipe canopy that is used for tunnel portal overlaps arch structure, it is characterized in that: described gate-type clad pipe canopy cover arch structure comprises the pipe canopy cover arch that is positioned at the tunnel portal top and is positioned at the pre-reinforcing stake of tunnel portal both sides, the two ends of described pipe canopy cover arch are connected with the pre-reinforcing stake of both sides respectively, and should manage canopy cover arch by pre-reinforcing pile bearing; The pre-top that reinforces stake is connected with roof rail, is filled with packed backfill between described roof rail and described pipe canopy cover arch.
2. the gate-type clad pipe canopy cover arch structure that is used for tunnel portal according to claim 1, it is characterized in that: be embedded with splicing sleeve in the described pre-reinforcing stake, the two ends of described pipe canopy cover arch are connected with described pre-reinforcing stake by the connecting reinforcement that inserts this splicing sleeve.
3. the gate-type clad pipe canopy cover arch structure that is used for tunnel portal according to claim 1 and 2 is characterized in that: be provided with the long tube canopy in the described roof rail.
4. job practices as claim 1 or 2 or 3 described gate-type clad pipe canopies cover arch structures may further comprise the steps:
(1) construction is pre-reinforces stake: at tunnel portal both sides excavation, cast is pre-reinforces stake, and in stake pre-buried splicing sleeve;
(2) tunneling pipe canopy cover arch: the pipe canopy cover arch section of tunneling, and the core soil of reservation tunnel excavation section;
(3) insert connecting reinforcement: in the splicing sleeve of described pre-reinforcing stake, insert connecting reinforcement;
(4) construction pipe canopy cover arch: gate spool canopy cover arch, make pipe canopy cover arch affixed in aggregates by connecting reinforcement and described pre-reinforcing stake, provided pipe canopy sleeve pipe in this pipe canopy cover arch is provided with the long tube canopy in pipe canopy sleeve pipe simultaneously;
(5) construction roof rail: after the concrete of described pipe canopy cover arch reaches design strength, filling bag reinstalls and bankets above pipe canopy cover arch, and pours into a mould roof rail above packed backfill, provided pipe canopy sleeve pipe in this roof rail, and in pipe canopy sleeve pipe, the long tube canopy is set, finish construction.
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| CN 201110044651 CN102071948B (en) | 2011-02-24 | 2011-02-24 | Door type composite pipe roof umbrella arch structure for tunnel opening and construction method thereof |
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| CN 201110044651 CN102071948B (en) | 2011-02-24 | 2011-02-24 | Door type composite pipe roof umbrella arch structure for tunnel opening and construction method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536266A (en) * | 2012-02-23 | 2012-07-04 | 山东盛大矿业股份有限公司 | Method for supporting top side of artificial tunnel |
| CN103967504A (en) * | 2014-05-21 | 2014-08-06 | 中国能源建设集团广东省电力设计研究院 | Supporting structure of tunnel opening of power plant circulating water system and construction method |
| CN104389628A (en) * | 2014-11-21 | 2015-03-04 | 山西省交通科学研究院 | Landslide section tunnel reinforcing device and reinforcing construction method |
| CN104612719A (en) * | 2014-12-15 | 2015-05-13 | 中铁二十局集团有限公司 | Collapse prevention processing method for soft rock tunnel portal |
| CN105257301A (en) * | 2015-10-16 | 2016-01-20 | 中铁十局集团济南铁路工程有限公司 | Method for reinforcing collapse of weak surrounding rock of shallow embedded and mining tunnel |
| CN105863650A (en) * | 2016-05-20 | 2016-08-17 | 浙江省交通规划设计研究院 | Tunneling construction method with first wall construction and second tunneling construction |
| CN106761832A (en) * | 2016-12-30 | 2017-05-31 | 陈建强 | A kind of subway tunnel safe construction method |
| CN107035382A (en) * | 2017-06-22 | 2017-08-11 | 中铁十局集团第五工程有限公司 | Tunnel portal support system under weak surrounding rock |
| CN107503360A (en) * | 2017-07-20 | 2017-12-22 | 中铁十八局集团有限公司 | A kind of huge loose talus tunnel entrance surcharge reaction ruggedized construction |
| CN108119149A (en) * | 2018-01-02 | 2018-06-05 | 兰州理工大学 | The tunnel support structure and construction method of existing building are worn under a kind of |
| CN109869163A (en) * | 2019-04-03 | 2019-06-11 | 北京市市政工程设计研究总院有限公司 | A kind of construction method and structure of tunnel |
| CN109915150A (en) * | 2019-04-26 | 2019-06-21 | 重庆交通大学 | A kind of pile foundation pre-reinforcement supporting construction and its construction method controlling tunnel subsidence |
| CN109944597A (en) * | 2019-04-16 | 2019-06-28 | 陕西路桥集团有限公司 | A kind of tunnel construction method based on protection face-upward slope natural vegetation |
| CN111365018A (en) * | 2020-03-25 | 2020-07-03 | 上海同岩土木工程科技股份有限公司 | Cover arch reinforcement method suitable for small tunnel clearance |
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| CN102536266A (en) * | 2012-02-23 | 2012-07-04 | 山东盛大矿业股份有限公司 | Method for supporting top side of artificial tunnel |
| CN103967504B (en) * | 2014-05-21 | 2016-05-18 | 中国能源建设集团广东省电力设计研究院有限公司 | A kind of supporting construction and construction method of electric power plant circulating water system tunnel mouth |
| CN103967504A (en) * | 2014-05-21 | 2014-08-06 | 中国能源建设集团广东省电力设计研究院 | Supporting structure of tunnel opening of power plant circulating water system and construction method |
| CN104389628A (en) * | 2014-11-21 | 2015-03-04 | 山西省交通科学研究院 | Landslide section tunnel reinforcing device and reinforcing construction method |
| CN104389628B (en) * | 2014-11-21 | 2015-09-02 | 山西省交通科学研究院 | Landslide location tunnel reinforcement device and reinforced construction method |
| CN104612719A (en) * | 2014-12-15 | 2015-05-13 | 中铁二十局集团有限公司 | Collapse prevention processing method for soft rock tunnel portal |
| CN105257301B (en) * | 2015-10-16 | 2017-11-03 | 中铁十局集团第一工程有限公司 | A kind of shallow-depth-excavation tunnel weak surrounding rock landslide reinforcing and processing method |
| CN105257301A (en) * | 2015-10-16 | 2016-01-20 | 中铁十局集团济南铁路工程有限公司 | Method for reinforcing collapse of weak surrounding rock of shallow embedded and mining tunnel |
| CN105863650B (en) * | 2016-05-20 | 2018-11-23 | 浙江省交通规划设计研究院 | It is a kind of elder generation wall after hole tunnel construction method |
| CN105863650A (en) * | 2016-05-20 | 2016-08-17 | 浙江省交通规划设计研究院 | Tunneling construction method with first wall construction and second tunneling construction |
| CN106761832A (en) * | 2016-12-30 | 2017-05-31 | 陈建强 | A kind of subway tunnel safe construction method |
| CN107035382A (en) * | 2017-06-22 | 2017-08-11 | 中铁十局集团第五工程有限公司 | Tunnel portal support system under weak surrounding rock |
| CN107503360B (en) * | 2017-07-20 | 2020-01-24 | 中铁十八局集团有限公司 | Huge loose rock pile tunnel import is piled and is carried back pressure reinforced structure |
| CN107503360A (en) * | 2017-07-20 | 2017-12-22 | 中铁十八局集团有限公司 | A kind of huge loose talus tunnel entrance surcharge reaction ruggedized construction |
| CN108119149A (en) * | 2018-01-02 | 2018-06-05 | 兰州理工大学 | The tunnel support structure and construction method of existing building are worn under a kind of |
| CN108119149B (en) * | 2018-01-02 | 2019-04-09 | 兰州理工大学 | The tunnel support structure and construction method of existing building are worn under a kind of |
| CN109869163A (en) * | 2019-04-03 | 2019-06-11 | 北京市市政工程设计研究总院有限公司 | A kind of construction method and structure of tunnel |
| CN109944597A (en) * | 2019-04-16 | 2019-06-28 | 陕西路桥集团有限公司 | A kind of tunnel construction method based on protection face-upward slope natural vegetation |
| CN109944597B (en) * | 2019-04-16 | 2020-11-06 | 陕西路桥集团有限公司 | Tunnel entering construction method based on protection of natural vegetation on side and up slopes |
| CN109915150A (en) * | 2019-04-26 | 2019-06-21 | 重庆交通大学 | A kind of pile foundation pre-reinforcement supporting construction and its construction method controlling tunnel subsidence |
| CN111365018A (en) * | 2020-03-25 | 2020-07-03 | 上海同岩土木工程科技股份有限公司 | Cover arch reinforcement method suitable for small tunnel clearance |
| CN111365018B (en) * | 2020-03-25 | 2021-08-06 | 上海同岩土木工程科技股份有限公司 | Cover arch reinforcement method suitable for small tunnel clearance |
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Address after: 410008 No. two, Furong North Road, Changsha, Hunan, 158 Patentee after: Hunan Traffic Planning Survey and Design Institute Co Ltd Address before: 410008 No. two, Furong North Road, Changsha, Hunan, 158 Patentee before: Hunan Communication Planning and Prospecting Design Academy |