摘要
介绍了软土地区平均长径比约为62且在桩顶、桩端和各土层分界面均埋设钢弦式钢筋计的12根冲孔灌注桩的静荷载试验结果。根据试验结果,分析了冲孔灌注桩的荷载传递的特性以及其极限侧阻力和极限端阻力的变化规律。讨论了冲孔灌注桩的施工工艺以及持力层性状、沉渣厚度、嵌岩深度、沉渣成分和桩端后注浆等桩端嵌固情况对其承载力的影响。
The static load test results of 12 punched east-in-situ piles in soft soil area, which have average length-diameter ratio of 62 and steel-string transducer at pile tip, at the side of pile and at the interfaces of soil layer were introduced. According to the test results, the characteristics of load transfer and variation law of ultimate side resistance and ultimate top resistance were analyzed. The influences of construction technique, the embedded situation such as bearing strata, thickness of residue, socket length, sediment composition, pile tip post-grouting on bearing capacity of piles were discussed.
出处
《建筑结构》
CSCD
北大核心
2014年第3期79-83,共5页
Building Structure
关键词
冲孔灌注桩
荷载传递
极限侧阻力
极限端阻力
桩端嵌固
punehed east-in-situ pile
load transfer
ultimate side resistance
ultimate top resistance
pile tip embedded situation
