Pull rod type multipurpose steel trestle abutment and construction method thereof

Abstract

The invention discloses a pull rod type multipurpose steel trestle abutment and a construction method thereof. The pull rod type multipurpose steel trestle abutment comprises double rows of steel pipepiles, soil retaining steel sheet piles, counter-pull steel sheets, abutment back filler, opposite-pull screws and an abutment butt strap. The construction method comprises the steps that firstly, the double rows of steel pipe piles are driven in front of the abutment to serve as an overall braking measure; then, aiming at the condition that abutment back filling soil in a river overtopping areais high, on one hand, the steel sheet piles and waist beam structures are adopted for achieving soil blocking and scouring effects, and on the other hand, the opposite-pull screws and the counter-pullsteel sheets are adopted for achieving balance of soil pressure; and reinforcing soil is filled between the steel sheet piles and the counter-pull steel sheets to ensure the stability of the abutmentback, a layer of concrete bridgehead butt strap is arranged at the upper part, and internally-arranged steel bars are welded with the tops of the steel pipe piles into a whole. By the adoption of thebridge abutment design and the construction method thereof, the problems that a temporary bridge abutment of a higher fill in the river overtopping area is difficult to disassemble, large in settlingvolume, poor in stability, scoured on the abutment back and the like can be solved, temporary trestle elevation control, bridge road sequential connection and trestle length reduction are facilitated, and therefore the purpose of reducing construction cost is achieved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering construction, in particular to a tie rod type multipurpose steel trestle abutment and a construction method thereof. Background technique [0002] At present, a wide river floodplain is often designed in the embankment. When the project crosses the embankment, a temporary steel trestle bridge needs to be built. The service period is based on the construction period of 2-5 years. In order to avoid the impact on the steel trestle bridge during the flood period, the steel trestle bridge may be designed to The floodplain is relatively high. If the steel trestle bridge is directly built to the embankment on both banks, then the traditional concrete abutment is connected with the sidewalk, the steel trestle bridge will consume a lot of money and the cost will be high; It is directly connected to the floodplain access road, and the bottom of the concrete abutment needs to be equipped with a fo...

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Problems solved by technology

[0003] In order to overcome the technical defects of the traditional steel trestle bridge construction in the prior art, such as complicated concrete stress, large volume, difficulty in breaking it later, and high cost, the present invention provides a tie-rod multi-purpose steel trestle abutment and its construction method, which can meet relatively high demands. The need for high-fill abutments, high construction efficiency, can effectively reduce the number of repairs of abutments and shorten the span of steel trestles, and solve the above technical problems

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