前板桩高桩梁板码头升级改造技术

针对带前板桩高桩梁板码头的升级改造问题,基于旧码头耐久性检测评估结果进行升级改造研究。采用对旧码头构件破损露筋、裂缝周围混凝土凿除并重新浇筑,表面用碳纤维布加强,对Ⅲ类桩基采用补打灌注桩并与原有结构连成整体等加固措施,同时,针对前板桩高桩梁板码头的结构特点,结合升级改造后码头水深条件、靠系泊设施、使用荷载等各种因素,采用在码头后方新建10 m宽高桩平台与原码头连接成整体受力的方案,成功将原5 000吨级码头升级为30 000吨级,对类似升级改造工程具有借鉴意义。

Upgrading technology of suspended jetty with front sheet pile

Based on the results of the durability test and evaluation of the old jetty,we study the upgrading of the suspended jetty with front sheet piled. Adopting the reinforcement measures such as removing and repairing the damaged concrete and cracks of the old jetty, strengthening the surface with carbon fiber fabric, and constructing cast-in-situ pile to replace class III pile foundation and connecting it with the old structure as a whole,and based on the characteristics of the piled jetty with front sheet pile,according to various factors such as the water depth,mooring facilities,service load,etc. after the upgrading and reconstruction,we upgrade the old 5,000 DWT jetty to 30,000 DWT by construction a new 10 m-wide rear platform to connect the old and new structures as a whole. The application of this technology may serve as a reference for similar upgrading projects.