THRUST SHARE RATIOS AND OPTIMIZATION DESIGN FOR TWO-ROW ANTI-SLIDE PILES
TANG Fen1，2，ZHENG Yingren2，YANG Bo2
(1. School of River and Ocean Engineering，Chongqing Jiaotong University，Chongqing 400074，China； 2. Department of Architectural Engineering，Logistical Engineering University of PLA，Chongqing 400041，China)
Abstract：The structure of two-row anti-slide piles is a complex mechanical characteristics. A finite element model is established and the share ratios with the thrust of the front and back rows of piles at different row distances are discussed. It indicates that the total thrust of the two-row piles is bigger than the thrust of only the front row piles. While the row distance is small，the back row pile shared almost all the thrust，and with the masking function of the back row piles，the front row pile couldn't display the best effectiveness. When the pile row distance increased，the share ratio of piles in front row increased gradually. The two piles worked independently，resisted part sliding block respectively and displayed the best effectiveness at the particular row distance. Based on calculation of trust and stability factor for the structure of two-row anti-slide piles，the projects of the total trust，the stability factor and the difference of two piles are selected and the multi-project optimization for two-row anti-slide piles is put forward. The most reasonable row distance and share ratio of the thrust are attained.
