【摘要】 柔性薄壁墩在周围填土卸载过程中变形过大会失去稳定性,导致桥梁结构发生突然垮塌,引发安全事故。以万州大桥7号墩为研究对象,在卸载桥墩周围填土过程中监控桥墩变形,采用现场监测、理论分析、ANSYS有限元数值模拟相结合的方法控制桥墩变形、提前预测合理的卸载方式,防止桥梁安全事故发生。结果表明:该方法能够有效控制桥墩变形、指导桥墩周围填土卸载,避免发生安全事故。更多还原

【Abstract】 The excessive deformation of flexible thin-walled pier in the process of filling unloading may lead to pier instable,make a sudden collapse of the bridge structure. This paper takes pier No. 7 of Wanzhou Bridge as research subject,whose deformation was monitored during the filling unloading process. A combination of the methods including on-site monitoring,theoretical analysis and ANSYS finite element numerical simulation was used to control the deformation of the pier and predict reasonable way of unloading in advance,so as to prevent the accidents from bridge. The results show that the method can effectively control the deformation of the pier,guide filling around unloading and avoid accidents.更多还原