预制装配式桥梁防撞栏施工技术研究

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中图分类号：U445.4 文献标识码：A 文章编号:1672-3791(2026)04-0146-03

Research on Construction Technology of Crash Barrier for Prefabricated Bridge

WANG Lijing

Poly Changda Engineering Co.,Ltd., Guangzhou,Guangdong Province,5114oo China Abstract: Aiming at the problems of long construction period and outstanding risk of high-altitude operations in theconstructionof traditional cast-in-place crash barriers,a prefabricatedand assembledbridge crash barrierconstruction technology is proposed based on the Zhongshan East Ring Expressway project.By developing millimeter level control technologyforleveling blocks anda hydraulic driven six dimensional locator,combined with mechanized installation technology,a 100% accuracy qualification rate of guardrail elevation error ⩽10mm and joint ⩽3 mm can be achieved.In engineering applications,the installation time ofa single section has been reduced by 70% the construction period has been shortened by 33.3% ，and the rework rate of key processes has been reduced to 0.8% .The research shows that this technology provides a safe,eficient and high-precision assembly solution for large-scale bridge engineering.

Keywords:Zhongshan East Ring Expressway; Prefabricated bridge; Crash barrier; Elevation error

桥梁防撞栏作为桥梁结构的重要组成部分，直接关系到行车安全。（剩余4276字）