水上大口径嵌岩桩施工

作者：孙树滨 杜俊和 徐燕鲁

单位：第一航务工程局基础工程公司!天津 300222 第一航务工程局基础工程公司!天津 300222 第一航务工程局基础工程公司!天津 300222

关键词：嵌岩桩  施工技术  坚硬岩石  花岗岩

分类号：TU753

出版年,卷(期):页码：1998,22(2):47-50

摘要：

在福州BP丰隆液化气码头进行水上大口径嵌岩桩的施工中，遇到无复盖层、岩面倾角达45°以上、岩石强度达200MPa的困难，施工一度陷于停顿。经过摸索，采用冲、钻、小爆破等成孔工艺，工效提高40倍，任务得以完成。

In the construction of large diameter rock-socketed piles on water conducted at LPG wharf of BP Fenglong in Fuzhou,due to the difficulties of no covering layers,the dip angle of rock surface of more than 45° and the rock strength up to 200MPa,the construction once sink into stop.The holing technological process of scour,drilling and small burst were ultilized through trial operation. Finally,the working efficiency was increased to 40 times and the construction was successfully completed.

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