Novel prefabricated assembled pier connecting structure and construction method thereof

Abstract

The invention provides a novel prefabricated assembled pier connecting structure and a construction method thereof. The connecting structure comprises an assembled pier, a plurality of semi-grouting sleeves are arranged in the assembled pier, the multiple semi-grouting sleeves are used for connecting longitudinal steel bars located in the assembled pier and reserved steel bars located in a bearing platform, a plurality of concrete piles are in contact connection with the lower part of the bearing platform, a plurality of steel corbel structures are arranged on the plurality of concrete piles, and unbonded prestressed tendons are arranged on the plurality of steel corbel structures. The invention further provides a construction method of the connecting structure. The construction method comprises the steps of assembly prefabrication, bottom construction, prestressed tendon installation and hoisting. The bridge can be subjected to the self-resetting effect of the prestressed tendons in the two horizontal directions, the anti-seismic performance of the bridge in the longitudinal bridge direction and the transverse bridge direction is effectively improved, damage to the bridge piers can be reduced while the anti-seismic performance of the bridge can be improved, and meanwhile the repairability of the bridge after an earthquake can be greatly improved.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a novel prefabricated assembled pier connection structure and a construction method thereof. Background technique [0002] With the continuous development of modern cities, the demand for bridge construction is also increasing. As an important link connecting cities, bridges play a vital role. However, earthquakes frequently occur in our country, which makes bridges face serious earthquake threats. The current seismic design method of bridges at home and abroad mainly uses the ductility of bridge piers for seismic design, allowing bridge piers to enter plasticity under strong earthquakes and form plastic hinges, so bridge piers may be seriously damaged and produce large plastic deformation. permanent residual displacement. However, past earthquake disasters have shown that it is far from enough to only aim at the safety of life and the anti-collapse performance of bridges. E...

AI Technical Summary

Problems solved by technology

However, the current self-resetting piers need to lay prestressed tendons inside the pier, which is not conducive to on-site construction and replacement after the earthquake. At the same time, the self-resetting swaying of the pier also faces the danger of uncontrolled swinging and overturning.

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