期刊信息
主管单位:教育部
主办单位:重庆大学
主  编:刘汉龙
地  址:重庆市沙坪坝区沙正街174号 重庆大学期刊社 《土木与环境工程学报》编辑部
邮政编码:400044
电  话:023-65111322;023-65111863
电子邮件:xuebao@cqu.edu.cn
国际标准刊号:ISSN 2096-6717
国内统一刊号:CN 50-1218/TU
邮发代号:78-48
每期定价:¥20
全年定价:¥120
访问统计
  • 您是本站第3424978位读者
  • 今日访问870
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 131次   下载 53 本文二维码信息
码上扫一扫!
分享到: 微信 更多
索连板球基础竖向抗拔承载特性及其影响因素
王雪姣1,2, 言志信2, 龙哲2
1.三峡大学 土木与建筑学院, 湖北 宜昌 443002;2.河南城建学院 土木与交通工程学院, 河南 平顶山 467036
摘要:
针对沙漠地区砂土地基的工程特性及现有输电塔基础存在的不足,研发出索连板球基础。将室内相似模型上拔试验与数值模拟计算相结合,对不同上拔荷载作用下的基础位移进行分析,并研究了埋深比、球径及柱径对基础极限抗拔承载力系数及土体表面主破裂面半径的影响及其规律。研究结果表明:数值模拟计算结果与模型试验结果吻合较好,与土体变形演化的三阶段相对应,荷载-位移曲线呈三段式变化;埋深比对基础极限抗拔力影响最大,且它们之间呈正相关关系;极限抗拔承载力系数随埋深比增大呈先增大后减小的变化趋势,与球体直径呈负相关关系,与水泥土柱直径呈正相关关系;土体表面主破裂面半径与埋深比、球径及柱径均呈负相关关系。
关键词:  索连板球基础  埋深比  荷载-位移曲线  极限抗拔承载力系数
DOI:10.11835/j.issn.2096-6717.2019.069
分类号:TU735
基金项目:河南省科技攻关项目(162102310390);河南省引智项目(201804)
Vertical uplift resistance of the foundation of plate and ball connected by anchor cable and its influencing factors
Wang Xuejiao1,2, Yan Zhixin2, Long Zhe2
1.School of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, Hubei, P. R. China;2.School of Civil and Transportation Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, P. R. China
Abstract:
According to the engineering properties of sandy soil foundation in desert area and the shortcomings of the existing transmission tower foundation, a foundation of plate and ball connected by an anchor cable is developed. By combining the similar model uplift tests and numerical simulations, the displacement of the foundation under different uplift loads is analyzed. Besides, the influence and its rule of buried depth ratio, spherical diameter and column diameter on the ultimate uplift bearing capacity coefficient of the foundation and the radius of main rupture surface of soil surface are studied. The results show that the numerical simulation results are in good agreement with the experimental results. The load-displacement curve presents a three-stage form, which corresponds to the three stages of soil deformation evolution. The ratio of buried depth is of the greatest influence on the ultimate uplift resistance of foundation, and there is a positive correlation between them. The ultimate uplift bearing capacity coefficient increases first and then decreases with increase of burial depth ratio. It is negatively correlated with the sphere diameter and positively correlated with the cement-soil column diameter. The radius of the main rupture surface of soil is negatively correlated with the buried depth ratio, spherical diameter and column diameter.
Key words:  foundation of plate and ball connected by anchor cable  buried depth ratio  load-displacement curve  ultimate uplift bearing capacity coefficient
Copyright@ 2008 All Rights Reserved.
关注微信二维码