摘要
复合防护板基础在采动区输电铁塔中得到了应用,但对这种基础形式的铁塔在基础变位和大风荷载的共同作用下的承载力评估研究较少。通过高精度静力水准测量系统,连续采集了采动区输电铁塔4个塔脚的基础沉降数据。建立了考虑地基土与复合防护板基础共同作用的铁塔承载力分析有限元模型,并依据实测沉降数据,在铁塔塔脚处约束节点施加了不均匀沉降位移,最终对沉降过程中铁塔承载力进行了评估。
Composite protective plate basement has been applied in the transmission line above goaf of coal mine,but the research focus on the bearing capacity of the tower with this kind basement especially under the interaction of basement deflection and wind load is less. The settlement data of the tower at its four feet were collected by high precision hydrostatic leveling system. Then the finite element analysis model considering the interaction between the soil and the composite protective plate foundation was formed,and the uneven settlement displacement was imposed at the node of tower feet according to the measured settlement data. Finally,the bearing capacity of the tower in the process of sedimentation was evaluated.
作者
张宏杰
杨风利
张鑫
张学礼
Zhang Hongjie;Yang Fengli;Zhang Xin;Zhang Xueli(China Electric Power Research Institute,Beijing 100055,China;Beijing University of Technology,Beijing 100124,China;Economic and Technology Research Institute of Beijing Electric Company,Beijing 100761,China)
出处
《建筑结构》
CSCD
北大核心
2018年第13期90-95,共6页
Building Structure
基金
国家电网公司科技项目(基于小型雷达的输电线路走廊采动区特殊地质结构探测研究与应用GCB17201700142)
关键词
输电线路
承载力
基础沉降
采动区
有限元分析
transmission line
bearing capacity
base settlement
goaf of coal mine
finite element analysis
