摘要
针对山区输电铁塔新型压力型锚索承台基础,通过数值模拟方法研究了单级压力型及多级压力分散型锚索注浆界面应力、应变和注浆体所受压应力的分布规律及压力型锚索承台基础的受力变形特性,获得了压力型锚索的锚固机理认识及该新型基础型式受力变形特征;探讨了预应力大小对压力型锚索承台基础和锚索受力和变形的影响规律。研究结果可为压力型锚索承台基础的设计计算提供参考。
For the pressure-type cable anchored platform foundation of transmission tower in mountainous area,numerical models was set-up and used to analyze the distribution of stress and strain on the contact surface between the cable and the grouting cement of the pressure-type cable.The compressive stress of the grouting materials and the mechanical characteristics of the pressure-type cable anchored platform were also investigated.The insights of the anchoring mechanism of the pressure-dispersed anchor cable and the deformation characteristics of the new foundation type were studied.The influence of the prestressing force on the stress and deformation of the cable and the platform foundation were discussed.The obtained results provides a valuable reference for design a similar pressure-type cable anchored platform foundation.
作者
麻坚
马宇辉
杨运国
蔡勇
肖志鹏
李欣
徐刚
吕庆
Ma Jian;Ma Yuhui;Yang Yunguo;Cai Yong;Xiao Zhipeng;Li Xin;Xu Gang;Lv Qing(Jinhua Electric Power Design Institute,Jinhua 321016,China;State grid Zhejiang Electric Power Company Jinhua Electric Power Company,Jinhua 321017,China;State grid Zhejiang Electric Power Company,Hangzhou 310007;Zhejiang University,Hangzhou 310058,China)
出处
《科技通报》
2021年第6期33-37,共5页
Bulletin of Science and Technology
基金
国网浙江省电力有限公司科技项目(5211JH170009)
关键词
输电铁塔
压力型锚索
承台基础
数值模拟
受力特性
transmission tower
pressure-type cable
platform foundation
numerical simulation
mechanical characteristic
