抗浮锚杆合理设计探讨

Research on rational design of anti-floating anchor

针对不同规范、规程、技术措施的抗浮锚杆计算公式不统一的现状,对抗浮水位的取值、水浮力设计值的分项系数取值、单根锚杆抗拔力的计算、钢筋是否可分批截断等提出了合理的建议。采用SAP2000软件中Hook单元模拟抗浮锚杆并进行计算,分析了锚杆的布置方式、底板厚度、上部压重、基床系数、基础梁、底板外挑等因素对锚杆拉力的影响,对锚杆的合理设计提出了有益的建议。

Based on the current situation that there is no unified calculating formula of anti-floating anchor in terms of different codes,specifications and technical measures,rational suggestions were put forward on calculation of anti-floating water level value,partial coefficient value of water buoyancy design value,calculation of single anchor pullout force,and whether rebars can be partially cut off. With application of Hook element of SAP2000 software to simulate the anti-floating anchor calculation,influence of factors such as anchor layouts,plate thickness,upper pressure,coefficient of subgrade,foundation beam and external plate on anchor pull were analyzed. Some useful suggestions on reasonable design of anchor were presented as well.