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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。
Based on the theoretical calculation and actual bridge analysis, the Liuzhou Jinglan Bridge with five cross-arches is studied to evaluate the risk assessment and control measures of the bridge. Based on the investigation of the safety of the bridge and the stress analysis of the structural system under the dismantling conditions, the recommended safety factors and control limits of the bridge and the risk and control measures under each dismantling condition are put forward. Engineering practice shows that the risk assessment of the bridge is accurate and reasonable, and the proposed countermeasures are applicable, which provides technical support for the safe and efficient demolition of the bridge.