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本文研究在外荷载、承台图式已定的情况下,高桩承台基桩的最优布置.将约束最优化问题化为无约束最优化问题,用MDLS法(Modified Damped Least Squares)求解.逐步递减桩数,然而调整桩基布局,使桩基内力分布较合理,且满足所有约束条件.用本文方法比原设计可以减少20～30%的桩数,具有显著的经济效果.
This paper studies the optimal placement of foundation piles for high-pile caps under the conditions of external loading and capping schedules. The constraint optimization problem is transformed into an unconstrained optimization problem. The MDLS method (Modified Damped Least Squares) is used to solve the problem. Gradually reduce the number of piles, however, adjust the layout of the pile foundation so that the internal force distribution of the pile is reasonable, and meet all the constraints. By using this method, the number of piles can be reduced by 20 to 30% compared with the original design, which has significant economic effects.