- 摘 要
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（1 中國電力科學(xué)研究院有限公司， 北京 100055； 2 北京工業(yè)大學(xué)， 北京 100124;3 國網(wǎng)北京市電力公司經(jīng)濟技術(shù)研究院, 北京 100761）
［摘要］復(fù)合防護板基礎(chǔ)在采動區(qū)輸電鐵塔中得到了應(yīng)用，但對這種基礎(chǔ)形式的鐵塔在基礎(chǔ)變位和大風(fēng)荷載的共同作用下的承載力評估研究較少。通過高精度靜力水準測量系統(tǒng)，連續(xù)采集了采動區(qū)輸電鐵塔4個塔腳的基礎(chǔ)沉降數(shù)據(jù)。建立了考慮地基土與復(fù)合防護板基礎(chǔ)共同作用的鐵塔承載力分析有限元模型，并依據(jù)實測沉降數(shù)據(jù)，在鐵塔塔腳處約束節(jié)點施加了不均勻沉降位移，最終對沉降過程中鐵塔承載力進行了評估。
［關(guān)鍵詞］輸電線路； 承載力； 基礎(chǔ)沉降； 采動區(qū)； 有限元分析
中圖分類號：TM753文獻標識碼：A文章編號：1002-848X(2018)13-0090-06
Bearing capacity estimate based on field test settlement data of steel tower with composite protective plate basement
Zhang Hongjie1, Yang Fengli1, Zhang Xin2, Zhang Xueli1
(1 China Electric Power Research Institute, Beijing 100055， China; 2 Beijing University of Technology, Beijing 100124， China; 3 Economic and Technology Research Institute of Beijing Electric Company, Beijing 100761， China)
Abstract: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.
Keywords:transmission line; bearing capacity; base settlement; goaf of coal mine; finite element analysis
作者簡介：張宏杰，博士，高級工程師，Email：75790868@qq.com。
