CN111535160A - Tunnel inverted arch combined type cableway bridge abutment - Google Patents
Tunnel inverted arch combined type cableway bridge abutment Download PDFInfo
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- CN111535160A CN111535160A CN202010430079.7A CN202010430079A CN111535160A CN 111535160 A CN111535160 A CN 111535160A CN 202010430079 A CN202010430079 A CN 202010430079A CN 111535160 A CN111535160 A CN 111535160A
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- inverted arch
- tunnel
- cable
- bridge
- cableway
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- 239000000463 material Substances 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 101150097977 arch-1 gene Proteins 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an inverted arch combined type cableway bridge abutment of a tunnel, and belongs to the field of bridge engineering. The invention is characterized in that a tunnel is arranged on one or two banks of a cableway bridge, an inverted arch is arranged at the bottom of the tunnel, a base material is arranged at one end of the inverted arch close to the cableway bridge, a cable saddle for laying a main cable is arranged at the top of the base material, and the end part of the main cable is anchored in backfill concrete of the inverted arch in the horizontal direction after crossing the cable saddle. The invention combines the bridge abutment form of the cableway bridge with the inverted arch of the tunnel, arranges the cable saddle on the base material at the end of the inverted arch, and anchors the main cable crossing the cable saddle in the backfill concrete of the inverted arch in batches. All main cables are anchored in the inverted arch in the horizontal direction after passing through the cable saddle, so that anchor cable hole turning construction is avoided, excavation is reduced, damage to the environment is reduced, and manufacturing cost and construction period are saved.
Description
Technical Field
The invention relates to an inverted arch combined type cableway bridge abutment of a tunnel, and belongs to the field of bridge engineering.
Background
Modern cableway bridges are a temporary bridge structure widely adopted in large-scale engineering construction, vehicle loads of the cableway bridges are transmitted to a bearing main rope through a bridge deck, the main rope transmits force to anchorages anchored on two banks, and the anchorages mainly bear tension. The commonly used anchorage forms are ground ridges, anchor piles, anchor rods, hybrid anchorages and the like. An abutment (foundation material) is arranged between the anchor and the main cable, and a pulley is arranged on the abutment to realize the steering and bearing of the main cable.
The inverted arch is a reverse arch structure arranged at the bottom of the tunnel for improving the stress condition of a supporting structure at the upper part of the tunnel, is one of main components of the tunnel structure, and is used for effectively transmitting the pressure of the stratum at the upper part of the tunnel to the ground through a side wall structure of the tunnel or the load on the road surface and also effectively resisting the counter force transmitted from the stratum at the lower part of the tunnel. The inverted arch and the secondary lining form a whole tunnel, so that the structural stability is improved.
The cableway bridge needs a bridge abutment to realize vertical support, steering of a main cable and connection of a bridge deck and two banks. When a cableway bridge needs to be directly connected with a tunnel portal in some projects, the problem of coordination between a cableway bridge abutment and a tunnel structure exists. The method commonly adopted at present mainly comprises the steps of excavating a large amount of tunnels to form a layout space of a bridge abutment of a cableway bridge, then excavating anchor pits, and backfilling gravel soil after the arrangement of anchor cables and anchor cable and main cable connectors is finished.
In the prior art, a large amount of tunnel mouths need to be excavated, which is unfavorable for manufacturing cost and environmental protection; and a plurality of anchor cables need to be constructed, so that the construction period is long and the cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a tunnel invert convolution cableway bridge abutment can reduce the excavation, alleviates the destruction to the environment, practices thrift cost and time limit for a project.
In order to solve the technical problems, the invention adopts the technical scheme that: tunnel invert convolution cableway bridge abutment, one bank or both banks of cableway bridge are provided with the tunnel, and the tunnel bottom is provided with the invert, and the invert is provided with foundatin material in its one end that is close to the cableway bridge, and foundatin material top is provided with the cable saddle that is used for laying the main rope, and behind the cable saddle is strideed across to the main rope tip, with the horizontal direction anchor in the backfill concrete of invert.
Further, the method comprises the following steps: the inverted arch and the base material are of an integral structure.
Further, the method comprises the following steps: the backfill concrete is provided with a stressed steel bar at the anchoring part of the main cable.
The invention has the beneficial effects that: the form of a bridge abutment of the cableway bridge is combined with the inverted arch of the tunnel, the cable saddle is arranged on a base material at the end of the inverted arch, and a main cable crossing the cable saddle is anchored in the backfill concrete of the inverted arch in batches. All main cables are anchored in the inverted arch in the horizontal direction after passing through the cable saddle, so that anchor cable drilling construction is avoided, excavation is reduced, damage to the environment is reduced, and manufacturing cost and construction period are saved.
Drawings
FIG. 1 is an elevational view of the present invention;
FIG. 2 is a plan view of the present invention;
fig. 3 is a transverse cross-sectional view of the present invention.
The labels in the figure are: 1-inverted arch, 2-base material, 3-main cable, 4-cable saddle, 5-backfill concrete, 6-main cable anchoring section, 7-tunnel lining, 8-road surface and 9-railing.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 3, the present invention is provided with a tunnel on one or both sides of a cableway bridge, an inverted arch 1 is provided on the bottom of the tunnel, a base material 2 is provided on one end of the inverted arch 1 near the cableway bridge, a saddle 4 for laying a main rope 3 is provided on the top of the base material 2, and the end of the main rope 3 is anchored in a horizontal direction in a backfill concrete 5 of the inverted arch 1 after crossing the saddle 4. The main ropes 3 are anchored in batches by using the backfill concrete 5 of the inverted arch 1 at the end of the tunnel, and correspondingly, the abutment at the other bank of the cableway bridge adopts a conventional arrangement mode.
In order to make the structure more firm and reliable, the inverted arch 1 and the base material 2 are the reinforced concrete structure of an integrated structure. The backfill concrete 5 is provided with a stressed steel bar at the anchoring part of the main rope 3, and the stressed steel bar can be integrated with a steel bar in the inverted arch 1.
Taking the case that a tunnel is arranged on only one bank of a cableway bridge as an example, the method comprises the following specific process steps:
(1) excavating and constructing a tunnel and an inverted arch;
(2) pouring construction of an inverted arch;
(3) installing a cable saddle component on an inverted arch of the tunnel portal;
(4) arranging main cables on the inverted arch in batches;
(5) arranging local stressed steel bars of the main cable, and backfilling the inverted arch by using concrete;
(6) constructing a cable way bridge opposite-shore bridge abutment;
(7) and erecting a main rope.
(8) The bridge deck structure is installed.
Claims (3)
1. Tunnel invert combination type cableway bridge abutment, one bank or both banks of cableway bridge are provided with the tunnel, and the tunnel bottom is provided with invert (1), its characterized in that: a base material (2) is arranged at one end, close to a cableway bridge, of the inverted arch (1), a cable saddle (4) for laying a main cable (3) is arranged at the top of the base material (2), and the end portion of the main cable (3) is anchored in backfill concrete (5) of the inverted arch (1) in the horizontal direction after crossing the cable saddle (4).
2. The tunnel inverted arch-combined type ropeway bridge abutment of claim 1, wherein: the inverted arch (1) and the base material (2) are of an integral structure.
3. The tunnel inverted arch-combined type ropeway bridge abutment of claim 1 or 2, wherein: the backfill concrete (5) is provided with stressed steel bars at the anchoring part of the main cable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430079.7A CN111535160A (en) | 2020-05-20 | 2020-05-20 | Tunnel inverted arch combined type cableway bridge abutment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010430079.7A CN111535160A (en) | 2020-05-20 | 2020-05-20 | Tunnel inverted arch combined type cableway bridge abutment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111535160A true CN111535160A (en) | 2020-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010430079.7A Pending CN111535160A (en) | 2020-05-20 | 2020-05-20 | Tunnel inverted arch combined type cableway bridge abutment |
Country Status (1)
| Country | Link |
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| CN (1) | CN111535160A (en) |
Citations (15)
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| CN102808382A (en) * | 2012-08-28 | 2012-12-05 | 中铁七局集团第五工程有限公司 | Method for constructing arch bridge in V-shaped valley without tower |
| US20130081215A1 (en) * | 2011-10-04 | 2013-04-04 | Sps New England, Inc. | Bridge beam placement system and apparatus |
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-
2020
- 2020-05-20 CN CN202010430079.7A patent/CN111535160A/en active Pending
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| CN201679094U (en) * | 2010-05-25 | 2010-12-22 | 中铁二院工程集团有限责任公司 | Abutment-tunnel conjunctive structure |
| US20130081215A1 (en) * | 2011-10-04 | 2013-04-04 | Sps New England, Inc. | Bridge beam placement system and apparatus |
| CN102808382A (en) * | 2012-08-28 | 2012-12-05 | 中铁七局集团第五工程有限公司 | Method for constructing arch bridge in V-shaped valley without tower |
| CN104153789A (en) * | 2014-08-21 | 2014-11-19 | 铁道第三勘察设计院集团有限公司 | High-speed railway separation type tunnel-bridge concatenation tunnel portal |
| CN106321106A (en) * | 2015-06-30 | 2017-01-11 | 中交二公局第六工程有限公司 | Construction method for tunnel-entering of tunnel weak surrounding rock and semi-open and semi-underground bias section portal abutment |
| JP2019526723A (en) * | 2016-08-19 | 2019-09-19 | ファウ・エス・エル・インターナツイオナール・アクチエンゲゼルシヤフト | Cable anchor with sealing element, prestress system including such cable anchor, and method for installing and tensioning an elongated element with a sheath |
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