摘要 超深 T 形桩墙在高水位的深厚软弱土层情况下成槽施工时,需要解决槽壁易坍塌及确保槽孔垂直精度大于 1/300 等两个重大技术难题。以埃及塞得东港集装箱码头二期工程 T 形桩墙施工为依托,对这两个重大技术难题的解决方法进行了研究,包括成槽设备选型以及槽壁预加固、导墙施工、泥浆制备、槽孔开挖等关键施工工艺和控制措施。结果证明,超深 T 形桩墙的槽孔垂直精度高、没有塌孔现象,成槽时间较短,成本低,能够保证工程质量,取得了良好的社会效益和经济效益。
Abstract：In trench construction of super-deep T-shape pile walls in deep-weak soil layers high water level, with groove walls easy to collapse and vertical resolution of more than 1/300 are two technical issues to solve. Based on construction of T-shape pile walls for Port Said East Container Terminal-Phase 2 Marine Works in Egypt, solutions to the two technical puzzles are studied. The key construction technologies include selection of trench equipments, advance reinforcement of groove walls, construction of guide wall, production of slurry, and excavation of trench. The results show that the vertical resobution of super-deep T-shape pile walls is high without hole collapse. The trench can be finished with short time, low cost and good quality, and good social and economical benefits are gained.
周翰斌. 复杂地层码头超深T形桩墙成槽施工关键技术[J]. 岩土工程学报, 2011, 33(sup2): 213-216.
ZHOU Han-bin. Key technology of trench construction of super-deep T-shape pile wall for quay in complicated stratum. Chinese J. Geot. Eng., 2011, 33(sup2): 213-216.