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Bridge abutment structure of sea-crossing bridge and construction method of bridge abutment structure

A construction method and abutment technology, which is applied in infrastructure engineering, bridges, bridge materials, etc., can solve problems such as inappropriate abutments, and achieve the effects of preventing land soil loss, reducing soil pressure behind the abutment, and preventing erosion

Pending Publication Date: 2022-02-18
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The abutment is located on the water surface outside the seawall and directly bears the erosion and suction of ocean waves. The abutment has the functions of anti-scouring and anti-hollowing. Comprehensive measures are used to solve the problem that the abutment is not suitable for the seaside

Method used

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  • Bridge abutment structure of sea-crossing bridge and construction method of bridge abutment structure
  • Bridge abutment structure of sea-crossing bridge and construction method of bridge abutment structure
  • Bridge abutment structure of sea-crossing bridge and construction method of bridge abutment structure

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Embodiment Construction

[0024] Precast concrete sheet piles 1 are installed in front of the abutment, and the gap between the precast concrete sheet piles and the abutment is filled with crushed stone 18 and C40 concrete post-casting. The two are independent of each other to prevent the sheet pile 1 from bearing the earth pressure behind the abutment. 200-400kg block stone 17 is filled in front of the sheet pile to prevent the front of the sheet pile from being hollowed out.

[0025] The backfill of the bridge abutment adopts light foam soil 9 on the water level to reduce the earth pressure, uses 10-100kg block stones 11 below the water level line, and sets two pieces of stones 12, a mixed filter layer 13 and a filter layer in sequence below the block stones The geotextile 14 can not only form a complete filter structure to prevent soil loss, but also increase the internal friction angle of the fill and reduce the earth pressure. Weep holes 5 and gravel filter packs 7 are set on the water level.

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Abstract

The invention discloses a bridge abutment structure of a sea-crossing bridge and a construction method of the bridge abutment structure. The bridge abutment structure of the sea-crossing bridge is characterized in that a bridge abutment is located on the water surface outside a seawall, a circle of prefabricated concrete sheet piles are arranged in front of and on the two sides of the bridge abutment, and the sheet piles are connected to form a closed anti-scour structure; and filling soil behind the bridge abutment adopts light foam soil and rock blocks, and is provided with an inverted filter structure. The bridge abutment is located on the water surface outside the seawall and directly bears scouring of ocean waves, the bridge abutment has the anti-scouring and anti-emptying functions, and the problem that the bridge abutment is not suitable for being arranged on the seaside is solved through comprehensive measures. Meanwhile, the bridge abutment is suitable for complex sites with high filled soil and soft foundations.

Description

technical field [0001] The invention relates to the technical field of sea-crossing bridges, in particular to an abutment structure of a novel sea-crossing bridge and a construction method thereof. Background technique [0002] With the development of economy and society, our country has built a large number of cross-sea bridges. Conventional sea-crossing bridges will cross the seawall, and the abutment is set on the land inside the seawall, which is not much different from the abutment of a conventional bridge. However, in the road network of coastal cities, coastal roads are built along the embankment, and sea-crossing bridges must cross the coastal road at a level, and abutments can only be set outside the seawall, which needs to withstand the force and erosion of ocean waves. [0003] On the one hand, the abutment is facing the problem of soil erosion on the side of the outer sea. The huge ocean current may hollow out the filling soil in front of the abutment and steal ...

Claims

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Application Information

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IPC IPC(8): E01D19/02E01D21/00E02D27/14E02D27/52E02D31/06E02D5/10E02D19/04E01D101/22
CPCE01D19/02E01D21/00E02D27/14E02D27/52E02D31/06E02D5/10E02D19/04E02D2300/002E01D2101/22
Inventor 杨帆袁慧芳王培晓李琳张伟郭俊伟孙祥
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP