Large section inclined tunnel type arc seat structure for arch bridge and construction method thereof

A tunnel-type, large-section technology, which is applied to arch bridges, bridge forms, bridges, etc., can solve problems such as high and steep slopes, difficulties in earthwork and waste slag, and large masonry volumes

Inactive Publication Date: 2019-06-07
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1. The excavation volume of the foundation pit or side slope is large, and a high side slope is often formed;
[0004] 2. The backfilling of the abutment requires a large amount of masonry;
[0005] 3. During the construction period, it will have a great impact on the surrounding ecological environment
[0006] 4. In some deep va

Method used

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  • Large section inclined tunnel type arc seat structure for arch bridge and construction method thereof
  • Large section inclined tunnel type arc seat structure for arch bridge and construction method thereof
  • Large section inclined tunnel type arc seat structure for arch bridge and construction method thereof

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Embodiment Construction

[0038] Such as Figure 1 to Figure 4 Shown: the large cross-section inclined tunnel arch abutment structure for arch bridges of this embodiment includes an arch abutment body 1, the arch abutment body 1 includes a tunnel cavity excavated on the roadbed surface 8 along an inclined direction and is arranged in the tunnel The backfill layer 2 in the cavity. The tunnel cavity includes a body section 3 and an opening section 4 arranged longitudinally. The body section 3 is a single-layer lining structure, the opening section 4 is a double-layer lining structure, and the outer wall of the opening section 4 Set up a protective shed 5 with a hole. With the above structure, the present invention has the following advantages:

[0039] 1. Compared with the cut-and-cut arch tunnel, the mountain has stronger binding force to the arch body 1, which is more beneficial to the arch bridge.

[0040] 2. For the first time, the arch abutment on one side of the arch bridge was considered as an overal...

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Abstract

The invention discloses a large section inclined tunnel type arc seat structure for an arch bridge and a construction method thereof. The large section inclined tunnel type arc seat structure comprises an arc seat body, the arc seat body comprises a tunnel chamber dug on the subgrade surface in the inclined direction and a backfill layer arranged in the tunnel chamber, the tunnel chamber comprisesa tunnel body section and a tunnel opening section, the tunnel body section and the tunnel opening section are arranged in the longitudinal direction, the tunnel body section is of a single-layer lining structure, the tunnel opening section is of a double-layer lining structure, and a tunnel opening protective shed is arranged on the outer wall of the tunnel opening section. According to the large section inclined tunnel type arc seat structure for the arch bridge and the construction method thereof, large excavation and high slope of the arc set foundation are avoided, construction risks andpotential operational risks in the construction process are lowered, and meanwhile environmental protective quality is improved.

Description

Technical field [0001] The invention relates to the field of arch bridge construction, in particular to a large-section inclined tunnel-type arch seat structure for arch bridges and a construction method thereof. Background technique [0002] Generally, there are three types of arch abutments for arch bridges: open cut and expanded foundation, composite pile foundation, and rock-socketed foundation. Among them, the steps of open-cut and expanded foundation construction are simple, and the application is very common; but there are the following shortcomings: [0003] 1. A large amount of excavation of foundation pits or slopes often results in high slopes; [0004] 2. Large amount of masonry for backfilling of arch abutment; [0005] 3. During the construction period, it will have a greater impact on the surrounding ecological environment. [0006] 4. In some deep-cut gullies or reservoir bank areas with high environmental protection requirements, if the arch abutment adopts the method...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D4/00E01D19/00
Inventor 余顺肖博丁浩王道良郑熙熙石波吴文平王昆
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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