基于摩擦拱的抗滑桩间距计算模型研究

Study on Model Calculating Spacing of Anti-slide Piles Based on Friction Arch

基于桩间摩擦拱效应,考虑坡面倾角对抗滑桩桩间距的影响,并以此建立计算模型,分别得到了相应的桩间距计算方法。通过考虑摩擦拱顶部和拱脚处土体强度,得到了相应的计算桩间距公式,并在一定条件下以此为临界点来最终确定桩间距的计算结果。通过工程实例,进一步验证了考虑斜坡倾角情况下抗滑桩桩间距的计算模型比较合理,并分析了桩间距与土体内摩擦角以及桩间距与斜坡倾角之间的关系。

Based on friction arch effect between piles and consideration of the influence of slope angle on anti- slide pile spacing, a calculation model was established, then the method calculating corresponding pile spacing was obtained. Taking the soil strength at the arch top and toe into consideration, the formula calculating corresponding pile spacing was developed, which was under certain conditions taken as critical point to determine the calculation result of the pile spacing finally. It was further verified through engineering example that the model calculating anti-slide pile spacing with slope angle taken into account was reasonable relatively. Furthermore, the relation between pile relation between pile spacing and slope angle, were spacing and friction angle in soil mass, as well as the analyzed.