超长钢板桩在低桩承台基坑中的支护设计与应用

Design and Application of Super Long Steel Sheet Pile in Foundation Excavation Support of Low Pile Cap

依托海华大桥主墩承台深基坑工程,针对开挖深度大、地下水丰富、管涌风险高及有不利淤泥层的特点,介绍拉森六型18m超长钢板桩基坑支护设计与应用技术。通过方案比选提出解决上述施工难题的最优方案,既可节省资源投入又可保证节点工期,具有较好的施工可行性与经济合理性。

Based on deep foundation excavation construction of main pier of the Haihua bridge, according to the characteristics of excavation depth, rich groundwater, high risk and unfavorable piping silt layer, this paper introduces the design and application of Larson six type 18 m super long steel sheet pile foundation excavation. According to the scheme, the optimal scheme to solve the construction problem is proposed, which can save the resource input and ensure the node time limit.