Abutment construction method for carrying out construction and filling in sequence in highfill area

Abstract

The invention provides an abutment construction method for carrying out construction and filling in sequence in a highfill area. Firstly, the part below the original ground of a pile foundation is constructed; then, open pile foundation work is adopted for constructing the part above the ground of the pile foundation; after pile foundation construction is completed, reinforced concrete barricades are poured on the periphery of the pile foundation in a layered manner, after pouring of each layer of barricade is completed, gravel is adopted between the barricades and piles for layered filling, each layer of gravel is tamped by a small tamping machine, then one layer of barricade is constructed, gravel backfill is carried out, and operation is circulated in sequence till the designed elevation is achieved; and a bearing table and an abutment body are constructed on filling gravel and the top of the pile foundation. The abutment construction schedule can be greatly improved, and the bridge overall construction period can be guaranteed. In the later period of engineering, rock ballasts are subjected to backfill step by step in the fill area outside the barricades till the designed elevation is achieved so as to guarantee the quality of the fill area.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and relates to a construction method of a bridge abutment, in particular to an abutment construction method in which the abutment is located in a high fill area and is constructed first and then filled. Background technique [0002] When building bridges in mountainous areas, some abutments are designed in high fill areas, with high fill heights, large fill areas, and a large amount of demand. The traditional abutment construction method is to fill up to the design elevation first, then use the percussion drill to punch holes to construct the pile foundation, and construct the cap and abutment body on the top of the pile foundation. The construction progress of the above method depends on the filling progress. In actual construction, in order to protect the environment, the tunnel excavation construction or subgrade excavation waste slag of the same project is generally used for fill...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of long construction period and low efficiency in the existing construction methods of filling first and then building abutments, and to provide an abutment construction method of first filling and then filling, which shortens the construction time under the premise that the construction quality meets the specification requirements. The construction cycle of the abutment, and provide reference for the construction of similar projects in the future

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