复合支护模式在深基坑桥梁基础中的应用

Application of Composite Supporting Mode in Deep Excavation Bridge Base

文章结合某拱桥止推墩基础施工实例,阐述了采用"排桩+冠梁+内撑"复合支护模式的深基坑桥梁基础施工方案,并利用有限元数值模型,计算分析了"排桩+冠梁+内撑"复合支护结构的受力状况及基坑稳定性。结果表明,该复合支护模式是有效、可行的。

Taking construction of an arch thrust pier base as an example,the article discussed a construction plan for deep excavation bridge base in composite supporting mode as ＂row pile ＋ top beam ＋ internal bracing＂ and using finite element value model,it calculated the stress and excavation stability for such a structure.It is proved that this composite supporting mode is valid and feasible.