Combined reinforcement technology for water scour damaged piers of heavy-haul railway

doi:10.16265/j.cnki.issn1003-3033.2020.01.007

Abstract

Abstract: In order to prevent destruction of pier foundation caused by flood scouring which will further affect bearing capacity and operation safety, a set of technical method combining supplementary pile foundation and foundation reinforcement method was proposed based on theoretical analysis and field test of flood scour disease of a heavy load railway pier. Then, a step-by-step implementation plan was drafted and applied in practical projects. The results show that static indexes, such as bearing capacity of single pile, displacement of pier top and earth pressure at pile side, are improved obviously after reinforcement, transverse vibration amplitude of bridge pier and span structure is markedly lower, and lateral vibration frequency of pier increases 5 times. Foundation stiffness and bearing capacity of pier and abutment are improved significantly.

Key words: heavy-haul railway, damaged pier, combined reinforcement, calculation, field test

CLC Number:

X948

CHEN Shuli, LIU Dunli, TIAN Bo, XU Hongwei. Combined reinforcement technology for water scour damaged piers of heavy-haul railway[J]. China Safety Science Journal, 2020, 30(1): 42-47.

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