铁道科学与工程学报2018，Vol.15Issue(6)：1445-1452,8.
基于多目标综合评价法的边坡抗滑桩桩位优化设计
Optimization design of pile location on slope based on multi-objective comprehensive evaluation method
摘要
Abstract
The safety factor, the landslide thrust behind the pile and the length of the pile are the main factors affecting the determination of pile location in the design of the system of anti-pile slope. The method of multi-objective comprehensive evaluation was employed to consider the above three main factors comprehensively. A model of multi-factor optimization was established and the value of optimization of piles at different locations was calculated to determine the most desirable pile location. By formulating a pile location at intervals of a fixed horizontal distance on the slope, the finite element model was established for analysis. The results were compared with the calculation which was calculated with a traditional limit equilibrium method in order to verify the correctness of the results. It is found that the soil resistance in front of the pile, the safety factor, the landslide thrust behind the pile and the length of the pile are large when the pile is set in the middle of the slope, and the slip surface is divided into two parts by the pile, but it could not meet economic demand; The soil resistance, safety factor, the landslide thrust behind the pile and the length of the pile are relatively small when the pile location is in the toe or top of the slope, and it does not dissatisfy secure request. It is shown that a plateau region appears in the curve of the lateral force due to the soil resistance in front the pile is quite different on the slope, and the lateral force acting on the pile is a parabola. The calculated data of the pile were modeled and calculated by using multi-objective comprehensive evaluation method and then it is found that the location of 6 m away from the toe of the slope in horizontal distance is the most desirable, and it is concordant with practical situation.关键词
抗滑桩/合理桩位/多目标综合评价法/多因素优化/数值模拟Key words
anti-pile/desirable location for the pile/multi-objective comprehensive evaluation/optimization/numerical simulation分类
交通工程引用本文复制引用
李起龙,魏红卫..基于多目标综合评价法的边坡抗滑桩桩位优化设计[J].铁道科学与工程学报,2018,15(6):1445-1452,8.基金项目
国家自然科学基金资助项目(51178472,51678573,51778639) （51178472,51678573,51778639）
