CN104153789A - High-speed railway separation type tunnel-bridge concatenation tunnel portal - Google Patents
High-speed railway separation type tunnel-bridge concatenation tunnel portal Download PDFInfo
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- CN104153789A CN104153789A CN201410413688.6A CN201410413688A CN104153789A CN 104153789 A CN104153789 A CN 104153789A CN 201410413688 A CN201410413688 A CN 201410413688A CN 104153789 A CN104153789 A CN 104153789A
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Abstract
A high-speed railway separation type tunnel-bridge concatenation tunnel portal comprises an arch shell structure of a main body portion and a supporting structure arranged below the arch shell structure. The arch shell structure is composed of a tunnel portal cap brim and a tunnel portal tunnel ling, an open cut tunnel structure is connected with the rear portion of the tunnel portal tunnel lining, and the supporting structure comprises top beams arranged on the two sides of the lower portion of the tunnel portal tunnel lining and fender posts arranged below the top beams. A main retaining wall is arranged on the front segment of the bottom of the concatenation tunnel portal, the two sides of the main retaining wall are upwarped, the middle of the main retaining wall is concave downwards, a plane is arranged in the middle portion of the inner side face of the main retaining wall, and slopes are arranged on the two side portions of the main retaining wall. The two sides of the main retaining wall are connected to the bottoms of the top beams, the outer side wall of the main retaining wall is connected with the fender posts, and the main retaining wall is in smooth butt joint with a bridge table structure. According to the concatenation tunnel portal, the bridge table and the tunnel portal structure are arranged below a pile foundation, a top beam system and a retaining wall system, separation of the bridge beam bridge table structure and the tunnel portal structure is achieved, and meanwhile when the tunnel engineering is holed, the portal excavation area is greatly reduced, the environment damage caused by slope brushing or tunnel portal engineering is reduced, and safety after high-speed railway operation is ensured.
Description
Technical field
The present invention relates to a kind of portal structure of railway tunnel, be specifically related to a kind of tunnel that is arranged on and be connected in series portal with the high-speed railway separate type tunnel bridge of bridge junction.
Background technology
At present, China has entered high-speed railway Rapid development stage, but still has series of problems to need further to solve.Railway Tunnel hole is positioned under steep orographic condition, one of the problem that will solve exactly of building of tunnel portal.Under steep orographic condition, bridge engineering is often connected with construction of tunnel, be to guarantee the stable of abutment, and the abutment of bridge need to try one's best and inwardly be arranged, and tunnel portal is " early enter hole, evening appear " principle for realizing, and tunnel portal needs outwards setting.From the high-speed railway of having runed, when the tunnel bridge of these projects is connected, tunnel portal adopts monolithic tunnel portal in a large number, significantly expands tunnel excavation section, within abutment is placed in to tunnel structure.
Although these monolithic tunnel portals can be implemented smoothly under steep orographic condition, expose in actual use some problems, main manifestations is:
Tunnel excavation section is excessive, cause face upward slope temporarily and forever face upward slope too high, Bian Yangpo; Brush slope scope is excessive, destroys hole environment serious, hole vegetation recovery difficulty; The pile foundation of abutment is destroyed the integrality of tunnel invert; Be difficult to realize zero and face upward slope and enter hole, after operation, potential hidden danger constantly occurs; Construction method is complicated, and difficulty of construction is large, risk is high.
Summary of the invention
The present invention arranges difficult problem in order to solve Railway Tunnel engineering facing upward portal setting and bridge engineering abutment under the high steep orographic condition in slope, and a kind of high-speed railway separate type tunnel bridge serial connection portal is provided.
The present invention addresses this problem taked technical scheme to be:
High-speed railway separate type tunnel bridge of the present invention is connected in series portal, comprises the arch shell structure and the braced structures that is arranged on arch shell structure below of main part; Arch shell structure is comprised of the portal the brim of a hat and portal lining cutting, and the rear of portal lining cutting is connected with open-cut tunnel structure; Braced structures comprises the Guan Liang that is arranged at both sides, portal lining cutting below and the fender post of being preced with beam below; Serial connection portal bottom leading portion is provided with main barricade, and main barricade is both sides and upwarps middle recessed " U-shaped ", and the mid portion of its medial surface is plane, and two side portions is domatic; The both sides of main barricade are connected to the bottom of Guan Liang, and lateral wall is connected with fender post; The rear side of main barricade docks with bridge abutment structure is smooth-going.
Between described portal lining cutting and the inside and outside wall of open-cut tunnel structure, wall thickness equates.Portal lining cutting and open-cut tunnel structure are enlarged cross section structure, and dock with tunnel uniform section by plug wall.Portal end face is inclined cutout or vertical cut formula.
Described main barricade is positioned at abutment outside, and two domatic and middle planes of its medial surface form the angle of 135 °～180 °.
Described portal lining cutting and fender post are realized and are connected and transmit load by Guan Liang.
The bottom of described open-cut tunnel structure is provided with joist, and the below of joist is provided with the little barricade of concrete, and open-cut tunnel structure rear side is provided with plug wall.
Advantage and good effect that the present invention has are:
High-speed railway separate type tunnel bridge serial connection portal of the present invention; abutment and portal structure add under hat beam system and barricade system in the pile foundation of its setting; realized the separated of bridge and tunnel; while making construction of tunnel enter hole, can significantly reduce hole excavation area, reduce side slope protection difficulty; reduced the environmental damage that cause on tunnel portal engineering brush slope; and slow down microwave pressure protection hole environment that bullet train enters tunnel obviously, adapt to and face upward the steep orographic condition in slope preferably, guarantee safety after high-speed railway operation.
Accompanying drawing explanation
Fig. 1 is the stereogram of high-speed railway separate type tunnel bridge serial connection portal of the present invention;
Fig. 2 is the top view of high-speed railway separate type tunnel bridge serial connection portal of the present invention;
Fig. 3 is the longitudinal section of high-speed railway separate type tunnel bridge serial connection portal of the present invention;
Fig. 4 is the sectional elevation of high-speed railway separate type tunnel bridge serial connection portal leading portion of the present invention;
Fig. 5 is the sectional elevation of high-speed railway separate type tunnel bridge serial connection portal back segment of the present invention.
Critical piece symbol description in accompanying drawing:
1: open-cut tunnel structure 2: portal lining cutting
3: the portal the brim of a hat 4: Guan Liang
5: fender post 6: main barricade
7: plug wall 8: the little barricade of concrete
9: joist 10: bridge abutment structure.
The specific embodiment
Referring to drawings and the specific embodiments, high-speed railway separate type tunnel bridge serial connection portal of the present invention is described further.Following each embodiment is not only limitation of the present invention for the present invention is described.
High-speed railway separate type tunnel bridge series type portal of the present invention, for tunnel, the connected location of high-speed railway tunnel bridge engineering.The arch shell structure that this portal is taked bridge bearing platform structure top to arrange not seal is as tunnel portal, and portal structure basis adopts pile foundation to add hat girder construction system, makes tunnel portal effectively separated with bridge bearing platform.Adopt and expand section simultaneously, slow down the microwave pressure that bullet train enters tunnel.
The present invention is applicable to for the steep location of landform, under the steep condition of landform, bridge engineering abutment is arranged at and is applicable near An Dongjin hole, tunnel, under this condition, can be by portal of the present invention be set, effectively reduce Bian Yang slope, tunnel excavation height, solve the problem that abutment arranges condition and the phase mutual interference of tunnel condition.
As shown in Figures 1 to 5, high-speed railway separate type tunnel bridge of the present invention serial connection portal, the present invention includes portal arch shell structure, be arranged on both sides below arch shell and rearmounted Guan Liang and the barricade system of pile foundation system and pile foundation inner side.
The joist 9 that arch shell structure comprises the portal the brim of a hat 3, portal lining cutting 2, be positioned at the open-cut tunnel structure 1 at serial connection portal rear portion, connect open cut tunnel bottom be positioned at the plug wall 7 that is connected open cut tunnel rear portion.By interior headroom is set, be greater than the arch shell of standard tunnel clearance, make within abutment is placed in tunnel portal.
The bottom of open-cut tunnel structure 1 is provided with joist 9, and the below of joist 9 is provided with the little barricade 8 of concrete, and open-cut tunnel structure rear portion is provided with plug wall 7, and plug wall 7 is positioned at open-cut tunnel structure 1 inside.
Between the inside and outside wall of portal lining cutting 2 and open-cut tunnel structure 1, wall thickness equates.Portal lining cutting 2 is enlarged cross section structure with open-cut tunnel structure 1, and docks with tunnel uniform section by plug wall.Portal end face is inclined cutout or vertical cut formula.Portal lining cutting 2 and fender post 5 are realized and are connected and transmit load by hat beam 4.
Guan Liang and pile foundation system comprise the hat beam 4 that is arranged at serial connection portal bottom and the fender post 5 of being preced with beam bottom.Hat beam system, for arch shell structure provides basis, makes tunnel structure and abutment realize separated simultaneously, avoids the bridge tunnel structural entity can not cooperative transformation problem.
Barricade system comprises and is arranged on the main barricade 6 of abutment front side, the little barricade 8 of the concrete of abutment rear side.Main barricade 6 is positioned at abutment front side, is both sides and upwarps middle recessed " U-shaped ", and the mid portion of its medial surface is plane, and two side portions is domatic; Two domatic and middle planes of medial surface form the angle of 135 °～180 °.The both sides of main barricade 6 are connected to the bottom of hat beam 4, and lateral wall is connected with fender post 5; The rear side of main barricade 6 docks with bridge abutment structure 10 is smooth-going.By being arranged on the barricade system of Guan Liang and pile foundation system inner side, solve the lateral deformation problems of too of tunnel portal foundational system.
The present invention is lower Guan Liang and pile foundation and barricade by expanding headroom area in tunnel portal with Tunnel gate arch housing is set, make tunnel portal can effectively slow down microwave pressure, realize smoothly bridge tunnel structure separated simultaneously, can realize tunnel early enter late go out enter hole principle, tunnel excavation height and difficulty of construction have been reduced generally, construct more safe and reliable, engineering quantity increases limited simultaneously.
Claims (7)
1. high-speed railway separate type tunnel bridge is connected in series a portal, comprises the arch shell structure and the braced structures that is arranged on arch shell structure below of main part; Arch shell structure is comprised of the portal the brim of a hat (3) and portal lining cutting (2), and the rear of portal lining cutting (2) is connected with open-cut tunnel structure (1); It is characterized in that: braced structures comprises and is arranged at the Guan Liang (4) of both sides, portal lining cutting (2) below and the fender post (5) below Guan Liang (4); Serial connection portal bottom leading portion is provided with main barricade (6), and main barricade (6) is both sides and upwarps middle recessed " U-shaped ", and the mid portion of its medial surface is plane, and two side portions is domatic; The both sides of main barricade (6) are connected to the bottom of Guan Liang (4), and lateral wall is connected with fender post (5); The rear side of main barricade (6) docks with bridge abutment structure is smooth-going.
2. high-speed railway separate type tunnel bridge according to claim 1 serial connection portal, is characterized in that: between portal lining cutting (2) and open-cut tunnel structure (1) inside and outside wall, wall thickness equates.
3. high-speed railway separate type tunnel bridge serial connection portal according to claim 1, is characterized in that: portal lining cutting (2) is enlarged cross section structure with open-cut tunnel structure (1), and docks with cross section, tunnel by plug wall (7).
4. high-speed railway separate type tunnel bridge serial connection portal according to claim 3, is characterized in that: portal end face is inclined cutout or vertical cut formula.
5. high-speed railway separate type tunnel bridge serial connection portal according to claim 1, is characterized in that: main barricade (6) is positioned at abutment outside, and two domatic and middle planes of its medial surface form the angle of 135 °～180 °.
6. high-speed railway separate type tunnel bridge according to claim 1 serial connection portal, is characterized in that: portal lining cutting (2) is connected by Guan Liang (4) realization with fender post (5) and transmits load.
7. high-speed railway separate type tunnel bridge according to claim 1 is connected in series portal, it is characterized in that: the bottom of open-cut tunnel structure (1) is provided with joist (9), the below of joist (9) is provided with the little barricade of concrete (8), and open-cut tunnel structure (1) rear side is provided with plug wall (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410413688.6A CN104153789A (en) | 2014-08-21 | 2014-08-21 | High-speed railway separation type tunnel-bridge concatenation tunnel portal |
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| CN201410413688.6A CN104153789A (en) | 2014-08-21 | 2014-08-21 | High-speed railway separation type tunnel-bridge concatenation tunnel portal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948217A (en) * | 2015-07-21 | 2015-09-30 | 招商局重庆交通科研设计院有限公司 | Air duct structure for underground ventilation system overpassing main hole of tunnel |
| CN107938706A (en) * | 2017-11-14 | 2018-04-20 | 宁波市交通规划设计研究院有限公司 | Shallow tunnel foundation pit enclosure section arched roof formula combines open-cut tunnel structure and construction method |
| CN108004913A (en) * | 2018-01-16 | 2018-05-08 | 中交公局第三工程有限公司 | Steep cliff position Bridge-wire fusing time overall structure |
| CN109958452A (en) * | 2019-03-14 | 2019-07-02 | 中铁十局集团西北工程有限公司 | A kind of tunnel exit slips the body control method that collapses |
| CN110159294A (en) * | 2019-05-08 | 2019-08-23 | 中铁二十二局集团第五工程有限公司 | A kind of high steep landform tunnel immediately adjacent to bridge section spreading open cut tunnel construction method |
| CN111021409A (en) * | 2019-12-20 | 2020-04-17 | 中铁十八局集团有限公司 | Steep slope soil rock tunnel portal underground excavation bridge tunnel and side slope parallel construction method |
| CN111535160A (en) * | 2020-05-20 | 2020-08-14 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel inverted arch combined type cableway bridge abutment |
| CN112855207A (en) * | 2021-03-03 | 2021-05-28 | 中交路桥华东工程有限公司 | Oblique crossing type tunnel structure with hole and construction method |
| CN113700494A (en) * | 2021-07-12 | 2021-11-26 | 中铁十六局集团第三工程有限公司 | Tunnel portal structure and construction method thereof |
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| CN102678132A (en) * | 2012-06-05 | 2012-09-19 | 中铁第一勘察设计院集团有限公司 | Anti-rockfall reinforced concrete open-cut tunnel structure |
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| CN102678132A (en) * | 2012-06-05 | 2012-09-19 | 中铁第一勘察设计院集团有限公司 | Anti-rockfall reinforced concrete open-cut tunnel structure |
| CN103032079A (en) * | 2012-12-31 | 2013-04-10 | 中铁第四勘察设计院集团有限公司 | Constant annular width bevel type tunnel opening buffer structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948217A (en) * | 2015-07-21 | 2015-09-30 | 招商局重庆交通科研设计院有限公司 | Air duct structure for underground ventilation system overpassing main hole of tunnel |
| CN107938706A (en) * | 2017-11-14 | 2018-04-20 | 宁波市交通规划设计研究院有限公司 | Shallow tunnel foundation pit enclosure section arched roof formula combines open-cut tunnel structure and construction method |
| CN107938706B (en) * | 2017-11-14 | 2019-10-18 | 宁波市交通规划设计研究院有限公司 | Shallow tunnel foundation pit enclosure section arched roof formula combines open-cut tunnel structure and construction method |
| CN108004913A (en) * | 2018-01-16 | 2018-05-08 | 中交公局第三工程有限公司 | Steep cliff position Bridge-wire fusing time overall structure |
| CN109958452A (en) * | 2019-03-14 | 2019-07-02 | 中铁十局集团西北工程有限公司 | A kind of tunnel exit slips the body control method that collapses |
| CN110159294A (en) * | 2019-05-08 | 2019-08-23 | 中铁二十二局集团第五工程有限公司 | A kind of high steep landform tunnel immediately adjacent to bridge section spreading open cut tunnel construction method |
| CN111021409A (en) * | 2019-12-20 | 2020-04-17 | 中铁十八局集团有限公司 | Steep slope soil rock tunnel portal underground excavation bridge tunnel and side slope parallel construction method |
| CN111535160A (en) * | 2020-05-20 | 2020-08-14 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel inverted arch combined type cableway bridge abutment |
| CN112855207A (en) * | 2021-03-03 | 2021-05-28 | 中交路桥华东工程有限公司 | Oblique crossing type tunnel structure with hole and construction method |
| CN112855207B (en) * | 2021-03-03 | 2023-08-29 | 中交路桥华东工程有限公司 | Oblique crossing tunnel structure and construction method |
| CN113700494A (en) * | 2021-07-12 | 2021-11-26 | 中铁十六局集团第三工程有限公司 | Tunnel portal structure and construction method thereof |
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Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |