浅海潮汐区水中桥基础施工技术

Techniques of Abutment Construction in Tidal Water

定头港特大桥桥址位于感潮河段,左侧为乐清湾,右侧为大荆溪入海口,受潮汐影响,每日两潮,潮差6m～7m,两潮间隔时间约4h。钻孔灌注桩地质分布复杂,施工难度较大。该文主要介绍了海上作业钢栈桥和钢平台的设计与施工、钻孔灌注桩施工、承台施工等施工技术。

Dingtougang Bridge is situated at the tidal area, with Leqingwan Bay at the left side and the estuary of Dajingxi at the right side, There are two tides in this area every day, ranging from 6m to 7m with an interval of about 4hours. With complicated geological conditions, cast-in-situ pile construction in this area is quite difficult. The paper mainly introduces the design and offshore construction of steel trestle and steel platform and the construction techniques of cast-in-situ pile and abutment.