某沿海码头位移分析及处理措施

Displacement Analysis and Countermeasures of A Coastal Berth Structure

在浙江东部沿海地区,工程建设场地多为软土地基,地基土具有含水量高、强度低、厚度大,高灵敏性的特点。高桩式码头结构可以直接将码头荷载传入深层的地基中,在该地区应用广泛。由于软土地基灵敏度高,当码头后方进行加载时,极易产生水平变形,从而迫使码头出现位移,危及码头结构的安全。本文结合实际工程的处理案例,通过深入分析老码头产生水平位移的原因,提出了相应的处理措施,保证了新、老码头相接后的水平位移控制及结构安全。

Most of project construction sites belong to soft soil foundation in the coastal area east to Zhejiang province.The foundation soil is characterized with high water content,low strength,large thickness and high sensitivity.The piled berth structure is widely used since it can transfer directly the wharf load into deep foundation.The loading of rear yard may cause the horizontal displacement of high sensitive soft base,even endangers the structural safety.Based on an engineering case,the countermeasures are proposed by analyzing the causes for horizontal displacement of the existing berth structure,which guarantees the control of horizontal displacement and structural safety subject to the connection of new and old berths.