品字型与直线型桩基力学特性对比分析  

Contrastive Analysis of Mechanical Characteristics of Three Rectangle and Linear Type Pile Foundation

作　　者：马鹏 李永奎 MA Peng;LI Yongkui(Chengdu Survey,Design and Research Institute Co.,Ltd.of CREEC,Chengdu 610081,China)

机构地区：[1]中铁二院成都勘察设计研究院有限责任公司,成都610081

出　　处：《路基工程》2021年第1期158-162,共5页Subgrade Engineering

摘　　要：以某工程的陡坡岩堆路基治理为依托,运用有限元软件,对品字型支挡结构和直线型支挡结构分别建模分析。分析研究发现:品字型迎坡面桩基的拉应力明显大于背坡面桩基,直线型桩基的最大应力和最大位移均小于品字型桩基,但品字型桩基对滑坡体的加固效果要强于直线型桩基。从利用土体抗力和材料用量综合分析,品字型桩基的经济性优于直线型桩基。For the treatment of the steep slope talus subgrade in a project,three rectangle and linear type retaining structure were modeled and analyzed with finite element software.It is found that the tensile stress of three rectangle type piles facing the slope is significantly greater than that of the piles far from the slope;the maximum stress and maximum displacement of linear type piles are less than those of three rectangle type respectively,however,the landslide reinforcement effect of three rectangle type is stronger than linear type;moreover,from the comprehensive analysis of the use of soil resistance and material consumption,three rectangle type piles have better economical efficiency than linear type.

关 键 词：岩堆 品字型 直线型 桩基 有限元 力学特性 土体抗力 

分 类 号：U419.93[交通运输工程—道路与铁道工程]