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以桥梁结构稳定理论为基础,以某高速公路高墩大跨连续刚构桥为例,利用有限元软件MIDAS分析了大跨高墩桥墩横隔板设置、施工荷载等因素对施工阶段稳定的敏感性。分析表明,桥墩横隔板间距大小对高墩大跨桥梁施工稳定不是很敏感,而施工荷载对其比较敏感,故悬臂施工时应特别注意施工荷载的平衡。其结论可为桥梁设计和施工提供一定的参考依据。
Taking the bridge structure stability theory as an example, taking the high pier and long span continuous rigid frame bridge of an expressway as an example, the finite element software MIDAS is used to analyze the stability of the pier during the construction period, such as the setting of diaphragm and the construction load, Sex. The analysis shows that the spacing of bridge pier diaphragm is not very sensitive to the construction stability of high pier and long span bridge, but the construction load is more sensitive to it. Therefore, the construction load balance should be paid special attention to. The conclusion can provide some reference for the design and construction of the bridge.