孔壁粗糙度对钻孔灌注桩桩侧阻力的影响  

Effect of Hole Side Roughness on the Side Resistance of Cast-in-site Pile …

作　　者：张建新[1] 刘利民 

机构地区：[1]中国矿业大学资源系,北京100083 [2]上海中宏(集团)总公司,上海200120

出　　处：《工程勘察》2003年第1期13-15,共3页Geotechnical Investigation & Surveying

摘　　要：以嵌岩桩为例 ,给出孔壁粗糙度的描述方法及其与桩侧阻力之间的关系。通过分析试验结果 ,研究了孔壁粗糙度对钻孔灌注桩抗压和抗拔侧阻力的影响。表明孔壁粗糙度越大 ,相应的桩侧阻力就越大 ,施工时可通过一定的技术方法增加孔壁的粗糙度 。The description method of hole side roughness and its effect on the pile side resistance of rock\|socked pile are presented. Through the analysis of pile testing results the effects of hole side roughness on the pile side resistance under pressuring load or pulling load for cast\|in\|site piles are studied. It is shown that the increase of the hole side rounghness would raise the bearing capacity of the piles. The principle can be used in pile construction for increasing the bearing capacity.

关 键 词：钻孔灌注桩 孔壁粗糙度 桩侧阻力 

分 类 号：TU473.14[建筑科学—结构工程]