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以某铁路大型车站改建工程软土深基坑施工为背景,拟定了多个钢格构柱现浇钢筋混凝土梁板连续刚构便桥设计方案,针对便桥结构体系伴随软土深基坑挖土施工而不断发生变化的特点,系统计算分析了软土深基坑挖土过程便桥结构全桥体系的动力特性,得到一些有益的结论,可供上跨深基坑干线铁路便桥设计和基坑挖土施工参考。
Based on the construction of soft soil deep foundation pit for the reconstruction of a large railway station, a series of design schemes for continuous rigid frame bridge of cast-in-place reinforced concrete beam with steel lattice columns were developed. For the construction of the bridge system with excavation of deep foundation pit of soft soil The dynamic characteristics of the full bridge system with soft soil deep excavation in the process of excavation of deep foundation pit are systematically analyzed and some useful conclusions are obtained. Construction reference.