填土表面具有不同荷载时的钢筋砼悬臂式挡土墙的优化设计

本文采用复合形法对钢筋砼悬臂式挡土墙进行优化设计,除考虑了填土的作用外,还考虑了土体表面具有满布均布荷载、局部均布荷载以及集中线性荷载的各种情形。全部约束均按现行规范的要求列出,并取挡土墙的总造价为目标函数。在此基础上编制了微电子计算机程序GHDC-87,与传统的设计法相比,采用本设计法一般可降低造价10％左右。

Optimum Design for R.C. Cantilever Retaining Wall under Loads on the Earth Filled Surface

In this paper, a complex shape method is employed in the optimization design of R.C. cantilevr retaining wall. In addition to the load of earth-fill, the loads of complete uniformed distribution,local uniformed distribution, and linearly concentration are taken into consideration. In order to guarantee the engineering practicality of presented method, all constraints are programmed according to the requirement of current design code for R.C. structure, and the minimization of total cost of the retaining wall is chosen as an objective function. On the basis of above mentioned, a microcomputer program GHDC-87 is devoloped. Compared with the conventional design method, the cost of R.C. cantilever retanining wall can be reduced about 10% when the proposed method is used.