大直径PHC管桩在印尼密实厚砂层场区沉桩实践  

Pile sinking practice of large-diameter PHC pipe piles under dense thick sand field in Indonesia

作　　者：洪宏兴 夏国光 盛健 朱全 HONG Hong-xing;XIA Guo-guang;SHENG Jian;ZHU Quan(China Harbor Engineering Co.,Ltd.,Beijing 100027,China;No.5 Engineering Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Qinhuangdao 066002,China)

机构地区：[1]中国港湾工程有限责任公司,北京100027 [2]中交一航局第五工程有限公司,河北秦皇岛066002

出　　处：《水运工程》2022年第1期229-232,共4页Port & Waterway Engineering

摘　　要：印尼万丹丰益工业园港项目工程首次采用D-160柴油锤进行PHC桩沉桩施工前,选取9根PHC桩在砂层分布的典型位置进行试沉桩。结果发现:桩靴长度对PHC管桩穿过砂层有明显影响,桩靴越长,穿过砂层所需的锤击数越少,总锤击数也会明显减少;当桩靴进入砂层时,贯入度会急剧减小,影响贯入度的主要因素是较大的端阻力,该过程一直持续到桩靴穿过砂层。The D-160 diesel hammer is used for PHC pile sinking the first time in the Indonesian Banten Fengyi Industrial Park Port Project,and 9 PHC piles are selected for test pile sinking at typical positions in the sand layer.It wais found that the length of the pile shoe has a significant effect on the PHC pipe pile passing through the sand layer.The longer the pile shoe,the less the number of hammer strokes required to penetrate the sand layer,and the total number of hammer strokes will also be significantly reduced.When the pile shoe enters the sand layer,the penetration degree will decrease sharply.The main factor affecting the penetration degree is the larger end resistance.This process continues until the pile shoe penetrates the sand layer.

关 键 词：大直径PHC管桩 密实厚砂层 D-160柴油锤 沉桩 

分 类 号：TU473[建筑科学—结构工程] U655.54[建筑科学—土工工程]