深基坑桩锚支护结构优化设计方法及系统研制

针时单支点桩锚支护问题,提出了一种基于施工过程中桩顶侧移控制的优化设计方法,并建立了优化设计模型.该方法以基坑开挖过程中的桩顶侧移为优化目标,以锚固点到桩顶距离为优化变量.以一次位移与二次位移曲线的交点作为优化点,确定锚杆最优位置,进而对桩锚支护结构进行优化.根据上述优化设计方法和模型,采用VB语言研制了优化设计系统,并进行了工程实例分析,设计结果表明:优化设计系统是可行的,优化设计方法和模型是合理的.

Optimization Method and Program Developing of Pile-anchor Retaining Structure in Deep Foundation Pit

Aiming at single fulcrum pile-anchor retaining structures,a new optimization method based on controlling the displacement of the top end of retaining piles during excavation has been proposed,and a related optimization model is established.In the optimization method,the displacement of the top end of a retaining pile is the optimization target,the distance between anchor and the top end of the retaining pile is the optimization variation.The optimal position of an anchor is set out when the first-displaceme...