戈壁滩地区输电线路掏挖基础上拔荷载应用  

Application of Pullout Load on the Excavated Foundation of Transmission Lines in Gobi Area

作　　者：杨智峰 赵玉成 李占岭 赵怀宇 魏锐 YANG Zhi-feng;ZHAO Yu-cheng;LI Zhan-ling;ZHAO Huai-yu;WEI Rui(School of Traffic and Transportation,Shijiazhuang 050043,China;Hebei Electric Power Survey and Design Institute,Shijiazhuang 050031,China)

机构地区：[1]石家庄铁道大学交通运输学院,河北石家庄050043 [2]河北省电力勘测设计院,河北石家庄050031

出　　处：《电力勘测设计》2018年第7期36-40,共5页Electric Power Survey & Design

摘　　要：本文主要就戈壁滩地区输电线路掏挖基础的工程应用进行研究,掏挖基础相对于不扩底的墩拥有较好的抗拔、抗压、抗倾覆特性。这里通过有限元软件对掏挖基础进行三维建模分析,考虑土质条件、桩土接触等因素,着重针对荷载传递、整体剪切的破坏机制以及影响范围等进行分析,验证掏挖基础工程的可行性,及对周围环境的影响范围。This paper mainly studies the engineering application of the excavated foundation of the transmission lines in Gobi area,and excavated foundation of belled piers with respect to non expanding piers have some better anti pull,compression,anti overturning characteristics.And in this paper,the finite element software is used to analyze the threedimensional modeling of excavated foundation,which the soil conditions and the contact between pile and soil are considered,and the finite element analysis is mainly carried out for the failure mechanism and the influence range of the load transfer and the whole shear,verifying the feasibility of digging foundation engineering,and the scope of the impact on the surrounding environment.

关 键 词：有限元分析 掏挖基础 上拔荷载 剪切破坏 

分 类 号：TU4[建筑科学—土工工程]