首页|期刊简介|投稿指南|分类索引|刊文选读|订阅指南|资料|样刊邮寄查询|常见问题解答|联系我们
杨罡,王天正,王大伟. 采空区塔基变形过程对输电铁塔安全性影响[J]. 科学技术与工程, 2019, 19(33): 206-212.
yang gang,wang tianzheng,wang dawei.Influence of Tower Deformation Process on the Safety of Transmission Towers in the Mining Subsidence Area[J].Science Technology and Engineering,2019,19(33):206-212.
采空区塔基变形过程对输电铁塔安全性影响
Influence of Tower Deformation Process on the Safety of Transmission Towers in the Mining Subsidence Area
投稿时间:2019-04-17  修订日期:2019-06-05
DOI:
中文关键词:  采空区 输电铁塔 塔基变形过程 转移路径 安全性
英文关键词:the gob area transmission tower deformation of the tower foundation transfer path safety of the transmission tower
基金项目:
        
作者单位
杨罡 国网山西省电力公司
王天正 国网山西省电力公司
王大伟 国网山西省电力公司
摘要点击次数: 291
全文下载次数: 83
中文摘要:
      位于采空区输电铁塔的安全性易受地表变形的影响,而塔基变形具有从无到有、从小到大、从单一到复合的特点,因此研究塔基变形过程输电铁塔安全性演化规律具有重要的工程意义。以位于采空区某500kV输电铁塔为研究对象,基于有限单元法,分别计算了单、双基础复合变形过程,在90°大风、45°大风和覆冰三种气象工况下,输电塔内力和变形规律。结果表明:单、双基础复合变形过程中,构件最大应力转移路径相似,变形初期铁塔安全性降低较少,中后期铁塔安全性降低速率加快;三种气象工况条件下,基础变形过程铁塔安全性演化规律相近;建议在塔基变形前期,对变形最大的塔脚和相同侧第一段横隔材实施监测和加固治理措施。
英文摘要:
      The safety of the transmission tower located in the mining subsidence is susceptible to earth’s surface deformation, while the deformation of the tower foundation has the characteristics of from nonexistence to pass into existence, from small to large, from single to composite. Therefore, it is of great engineering significance to study the safety evolution law of transmission towers in the deformation process of tower foundation. Taking a 500kV transmission tower located in the mining subsidence as the research object, internal force and deformation law of transmission tower are calculated based on the finite element method under three meteorological conditions respectively: 90° high wind, 45° high wind and ice coating, during the single and double foundation composite deformation process. The results show that during the single and double foundation composite deformation process, the maximum stress transfer path of the members is similar, and the safety of the tower is less reduced in the early stage of deformation, and the safety rate of the tower is accelerated in the middle and late stages. Under three meteorological conditions, the evolution law of the safety of the transmission tower in the deformation of the tower foundation is similar. It is reco mmended to carry out monitoring and reinforcement measures for the tower legs with the largest deformation and the first section of the transverse joints on the same side in the early stage of the deformation of the tower.
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第31651215位访问者
版权所有:科学技术与工程编辑部
主管:中国科学技术协会    主办:中国技术经济学会
Tel:(010)62118920 E-mail:stae@vip.163.com
京ICP备05035734号-4
技术支持:本系统由北京勤云科技发展有限公司设计

京公网安备 11010802029091号