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（天津大學(xué)建筑工程學(xué)院， 天津 300072）

［摘要］為提高樁基礎(chǔ)設(shè)計(jì)工作的效率及質(zhì)量，將一種混沌粒子群算法引入到樁基礎(chǔ)優(yōu)化設(shè)計(jì)中。建立了以樁基礎(chǔ)造價(jià)為目標(biāo)函數(shù)的樁基礎(chǔ)優(yōu)化設(shè)計(jì)數(shù)學(xué)模型。編制了此數(shù)學(xué)模型的優(yōu)化設(shè)計(jì)計(jì)算程序并對(duì)樁基礎(chǔ)工程算例進(jìn)行分析，從而得到了樁基礎(chǔ)的若干主要參數(shù)對(duì)其造價(jià)影響的基本規(guī)律，證明了本優(yōu)化方法

具有可行性及比普通算法的優(yōu)越性。

［關(guān)鍵詞］樁基礎(chǔ)； 優(yōu)化設(shè)計(jì)； 混沌粒子群算法； 基礎(chǔ)造價(jià)

中圖分類號(hào)：TU473.1+2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)02-0076-06

Optimal design method for pile foundation based on chaotic particle swarm algorithm

Wang Chenghua, Zeng Chaofeng, Liu Weipeng

（School of Civil Engineering, Tianjin University, Tianjin 300072, China）

Abstract:In order to improve the efficiency and quality of the design of pile foundations, a chaotic particle swarm algorithm was introduced in the optimal design of pile foundations. The mathematical model of pile foundation optimization design that takes pile foundation cost as objective function was established. A calculation program corresponding to the model was coded and a typical pile foundation engineering case was analyzed, and the basic rules of influences of main design parameters on the cost of pile foundations were then obtained, which demonstrated the feasibility of the optimal method as well as its advantages to those commonly used methods.

Keywords:pile foundation; optimal design; chaotic particle swarm algorithm; foundation cost

*國家自然科學(xué)基金資助項(xiàng)目（51478313，50978182）。

作者簡介：王成華，教授，Email:Chwang@tju.edu.cn。