Steel bar circular seam connection type splicing structure between top cap and pier column, and construction method thereof

Abstract

The invention provides a steel bar circular seam connection type splicing structure between a top cap and a pier column, and a construction method thereof. The splicing structure comprises the pier column and the top cap, the top cap is prefabricated in a factory, a reserved circular seam is formed in the lower portion of the top cap, the shape of the reserved circular seam is matched with that of the pier column, the bottom of the top cap is in an opening form, pier column connecting steel bars are arranged in the pier column, pier column connecting steel bars extend out of the top face of pier column by certain length, and connecting joints are laid on the top face of the pier column. During construction, the top cap is installed on the pier column through the connecting seam, the pier column connecting steel bar is inserted into the reserved circular seam and penetrates through a gap between the top cap bottom layer steel bar and the top cap middle steel bar, circular seam slurry is poured into the reserved circular seam from the slurry inlet pipe, and the top cap bottom layer steel bar and the top cap middle steel bar are connected through the connecting seam. And after the circular seam slurry flows out of the slurry outlet pipe, splicing of the top cap and the pier column is completed. When the splicing structure is spliced, the reserved steel bar joints do not need to be aligned one by one, the requirement for manufacturing precision is low, the construction tolerance is large, grouting and grout discharging do not need to be conducted on the steel bar joints one by one, construction is convenient and fast, structural stress is clear, and the construction quality and the structural performance are easy to guarantee.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to an assembled structure and a construction method of a steel ring seam connection type assembly structure between a top hat and a pier column. Background technique [0002] With the development of green construction technology, in railway, urban rail transit, municipal and highway projects, the application of segmental prefabricated piers is gradually increasing. The pier structure often consists of one or more piers and top hats, especially in railways, In urban rail transit, the bridge pier is relatively narrow laterally, and two pier columns and top caps are often used. After the pier columns and foundation are assembled, the top cap is assembled with the two pier columns. [0003] At present, the assembly between the top cap and the pier column is usually connected by sleeve grouting or corrugated pipe grouting. When connecting, it is necessary to pre-embed the grouting slee...

AI Technical Summary

Problems solved by technology

[0003] At present, the assembly between the top cap and the pier column is usually connected by sleeve grouting or corrugated pipe grouting. When connecting, it is necessary to pre-embed the grouting sleeve or corrugated pipe in the prefabricated top cap, and reserve the steel bar joint on the pier column. The reserved steel bar joints are inserted into the pre-embedded grouting sleeve or bellows one by one, which requires high installation accuracy and construction. Special auxiliary tools are required to accurately locate the position of the steel bars during manufacture, which increases the cost; pre-embedded grouting sleeves or bellows It is difficult to ensure the complete centering between the plug-in connection and the steel bar, which may have an adverse effect on the connection performance; after the assembly is completed, it is necessary to grout the pre-embedded grouting sleeve or bellows one by one, and there are many construction procedures; Grouting sleeves or corrugated pipes need to be provided with grouting holes and grouting ports one by one. Many reserved holes will have a great impact on the structure, and the material cost is high

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