静压管桩单桩承载力试验与桩基优化设计  

Experimental Research on Bearing Capacity of Single PHC Pile & Optimizing Design of Pile Foundation

作　　者：赵俭斌[1] 陈勇[2] 马剑秋[2] 林南 孙传胤 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168 [3]辽宁城市建筑设计院,辽宁沈阳110005 [4]中冶沈勘工程技术有限公司,辽宁沈阳110015

出　　处：《沈阳建筑大学学报（自然科学版）》2006年第6期903-906,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省地方规范项目;建设部科技项目(05-K1-9)

摘　　要：目的通过单桩静载荷试验确定静压管桩的单桩极限承载力和单桩承载力特征值,进而对工程设计进行优化,促进辽沈地区静压管桩技术的推广应用.方法通过对静压管桩的载荷试验研究,依据Q^S曲线等试验成果给出单桩极限承载力和单桩承载力特征值,根据上部结构及地层情况结合终压力和单桩极限承载力的关系进行分析.结果依据试验结果,经分析确定了静压管桩的桩长,实现优化设计,既保证了工程安全又产生了明显的效益.结论为指导工程实践、优化静压管桩基础的设计,在施工前进行试桩具有重要意义.工程实践表明:试桩既可保证工程安全、又可优化静压管桩基础的设计,还可为施工中的双重控制提供依据.Through single pile static load test in purpose, it can fix static-pressure pipe pile ultimate bearing capacity and single bearing characteristic value, and then optimize design in engineering, prompt the area of Liao Shen to press the popularization and application. Based on the static load test study and the experimental achievement of Q-S curve, the ultimate bearing capacity and characteristic value of bearing capacity can be determined.The analysis was according to the superstructure and the stratum situations unite the relation between final pressure and the ultimate bearing capacity. According to the test result, the pile＇s length had determined after analysis, it realizes optimizing design that both guarantee the project security and to have the obvious benefit. It has vital significance to direct engineer practice, optimize static-pressed pipe-pile foundation design. Engineering practice indicated that testing pile before construction both may guarantee the project security, and may optimize the statlc-pressed pipe-pile-foundation design, but also may provide the basis for the construction in dual control.

关 键 词：静压管桩 静载荷试验 单桩承载力特征值 优化设计 终压力 效应系数 

分 类 号：TU41[建筑科学—岩土工程]