摘要
通过静载试验法和规程法计算分析静压管桩的短桩竖向极限承载力,结果表明:静压端承型短桩存在"短桩效应",倘若基桩竖向极限承载力设计取值不合理,在施工过程中沉桩终压桩力虽然达到设计要求,但在静载试桩时常常出现基桩竖向极限承载力不能满足设计要求,故与其他中长桩比较,在同一终压桩力条件下,端承型短桩的单桩竖向极限承载力标准值需考虑折减计算。同时提出短桩竖向承载力不合格问题的技术处理方法,由于静压短桩效应影响和短桩处理后条件的变化,应验算群桩竖向极限承载力。
Based on the static load test and the calculation analysis,vertical bearing capacity of the static pressing concrete precasted short pipe-pile is obtained.The results show that it exists effection of short pile of the end-bearing concrete precasted short pile.If pile vertical design bearing capacity was chosen inappropriately,during the construction it could accord with value design demand,however it couldn t satisfy the demand in the static load test.Thus its vertical bearing capacity should be reduced.I...
出处
《建筑结构》
CSCD
北大核心
2009年第7期63-65,共3页
Building Structure
关键词
静压管桩
短桩效应
单桩竖向极限承载力
技术分析处理
static pressing concrete precasted pipe-pile
effection of short pile
pile vertical bearing capacity
technology treatment
