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Field Investigation and Numerical Analysis of Damage to a High-pier Long-span Continuous Rigid Frame Bridge in the 2008 Wenchuan Earthquake
Journal of Earthquake Engineering ( IF 2.6 ) Pub Date : 2021-01-08
Xianzhi Zeng, Kailai Deng, Yuechen Wang, Guihao Yan, Canhui Zhao

ABSTRACT

This paper summarizes a sophisticated field investigation of the seismic damage to a continuous rigid frame bridge. Cracking and deformation of main girder, failure of bearings, and damage of piers were examined. The whiplash effect of the long side span of main bridge caused the prominent damage of bearings and restrainers on the transition piers. A numerical model was developed for supplementary analysis. The multi-directional dynamic analyses were conducted, which revealed a satisfactory agreement with the field investigation. Based on the numerical model, the effect of anti-tensile configurations was analyzed for reducing the whiplash effect of the side span.



中文翻译:

2008年汶川地震高墩大跨度连续刚构桥损伤现场调查与数值分析

摘要

本文总结了对连续刚构桥地震破坏的精密现场调查。检查了主梁的开裂和变形,轴承的损坏以及墩的损坏。主桥长跨度的鞭打效应导致过渡墩上的轴承和限位器受到明显损坏。建立了数值模型用于补充分析。进行了多方向动态分析,表明与现场调查结果令人满意。在数值模型的基础上,分析了抗拉构型的效果,以减少侧跨的甩鞭效应。

更新日期:2021-01-08
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