5跨连拱桥保护性拆除的风险评估与应对措施

针对5跨连拱的柳州静兰大桥,以理论计算与实桥分析为基础,研究该桥保护性拆除风险评估与控制措施。通过对该桥的安全度调查及各拆除工况下结构体系的受力分析,提出了建议的拆桥安全系数及控制限值和各拆除工况下的风险与控制措施等。工程实践表明,该桥保护性拆除风险评估精准合理,提出的应对措施适用,为安全、高效地拆除该桥提供了技术保障。

Risk Appraisal and Corresponding Measures of Protective Dismantlement for a Multiple Arch Bridge with 5 Spans

By the Jinglan Bridge in Liuzhou City, which is a multiple arch bridge with 5 spans,based on the theory calculation and the real bridge analysis,the risk appraisal and control measures of protective dismantlement for the bridge are studied.By investigation about degree of safety,load bearing analysis of structure system in every dismantlement project condition,suggested safety coefficients and control limiting values,risk and control measures in every dismantlement project condition are advanced.The practice of engineering proves this risk appraisal of protective dismantlement for the bridge is accurate and reasonable and corresponding measures are appropriate.This provided technique guarantee of safe and efficient dismantlement for the bridge.