【摘要】 在给出模型相似比的基础上,确定一定比例试验模型与工程结构应力、应变关系、变形位移关系,将相似理论和模型试验的方法成功的应用于h式抗滑桩模型试验方案的设计.试验研究指出:在相同的荷载作用下,h式抗滑桩相对普通单桩桩身位移显著减小,前者只有后者的20%~25%,同时,h式抗滑桩最大弯矩仅为普通单桩30%,峰值均在滑面附近锚固段出现。h式抗滑桩实测应力值与理论计算值接近,并显示与理论计算相似的分布规律。此外,模型试验反映了不同桩底支承条件下,h式抗抗滑桩最大弯矩值与位移值的差异,为此类新型结构的设计提供了试验依据。更多还原

【Abstract】 Based on the established similarity law,the study clear relationship of stress,strain,displacement between a certain ratio of the test model and project structure,then the Similarity theory and model test method have been applied successfully to the design of a special test scheme. The study show that h type of anti-sliding piles is smaller displacement than ordinary piles in the same loads( about20% ~ 25%). In addition,for the maximum moment,h type of anti-sliding piles is also smaller than ordinary piles in the same loads( about 30%),however,the peaks are generated below sliding surface both of them. Measured stress values and distribution are similar of theoretical values and distribution for h type of anti-sliding piles. Model test also show the difference of Maximum Moment and displacement in the different anchorage conditions of pile in order to provides an experimental basis for the design of this new structure.更多还原