珠江三角洲某电厂大直径深长钻孔桩桩身测试与静载试验分析  

Analysis of Beraing Capacity Behavior of Large Diameter and Long Bored Pile in the Preal River Delta

作　　者：胡亚龙 何志刚 

机构地区：[1]广东天信电力工程检测有限公司,广州510600

出　　处：《广东土木与建筑》2010年第4期57-59,共3页Guangdong Architecture Civil Engineering

摘　　要：采用滑动测微计测试桩身的轴向应变,并结合静载试验分析了珠江三角洲某电厂3根大直径深长钻孔灌注桩的荷载传递性状,结果表明Q-s曲线呈缓变型,在最大试验荷载时都未达到破坏状态;桩身轴力传递规律、桩侧阻力和端阻力的发挥与成孔时间密切相关,桩端阻力与桩侧阻力同步发挥。Sliding micrometer is used to measure the axial strain of the pile and the load transfer behaviours of 3 large diameter and long bored poles in the Preal River Delta are analyzed in association with vertical static load tests. According to the test results,the Q-s curves of long bored piles are slowly varying. The time of bored was completed is important to the load transfer mechanism,the acrion of lateral friction and end bearing. Lateral friction and end bearing can display simultaneously.

关 键 词：珠江三角洲 大直径深长钻孔灌注桩 承载性状 滑动测微计 

分 类 号：TU473.12[建筑科学—结构工程]