砂土中锚板荷载-位移特性研究及上拔位移计算  

STUDY ON LOAD-DISPLACEMENT CHARACTERISTIC OF ANCHOR SLAB IN SANDY SOIL AND CALCULATION OF UPLIFTING DISPLACEMENT

作　　者：丁佩民[1] 张其林[2] 肖志斌[1] 

机构地区：[1]浙江大学 [2]同济大学

出　　处：《土木工程学报》2004年第6期52-59,86,100,共10页China Civil Engineering Journal

摘　　要：根据砂土中水平锚板的抗拔荷载 位移 (Q S)曲线特征 ,假定锚板的无量纲化荷载 位移 (Q Qu—S D)曲线为双曲线方程 ,对本次砂土中模型锚板的抗拔试验数据和相关的现场和模型试验结果 ,进行了统计学分析 ,阐明了模型试验锚板和现场试验锚板抗拔性能的差异 ,考虑到实际工程的不确定性 ,按 95 %的置信上限确定双曲线方程的系数 ,得出水平锚板的无量纲化双曲线方程 ,据此可以求解锚板在工作荷载下的位移。最后对方程的应用作了说明。Based on character of uplift load-displacement ( Q-S )plot of anchor slab in sandy soil,It was assumed that relationship between dimensionless load and displacement is tally with hyperbola,and data from uplift test on model and corresponding of anchor slab in sandy soil were analyzed statistically.Different uplift resistance between model of tested anchor slab and field-tested one was described therewith.Considering uncertainty of practical project,coefficient of the hyperbolic relationship between load and displacement was decided according to confidence upper limit of 95%,and the hyperbolic equation with dimensionless of horizontal anchor slab was obtained,solution of displacement of anchor slab bearing working load could be solved hereby.Application of the equation was explained as well.

关 键 词：砂土 锚板 荷载-位移曲线 双曲线方程 上拔位移 

分 类 号：TU441.4[建筑科学—岩土工程]