| 土钉和桩锚组合式支护体系受力和变形的数值模拟 |
| |
| 引用本文： | 刘利平,刘晶晶,张鹏,石明禄,闫先锋.土钉和桩锚组合式支护体系受力和变形的数值模拟[J].探矿工程,2014,41(8):53-57. |
| |
| 作者姓名： | 刘利平 刘晶晶 张鹏 石明禄 闫先锋 |
| |
| 作者单位： | 河北建设勘察研究院有限公司,河北石家庄050031 |
| |
| 基金项目： | 河北省建设科技研究计划(50978022) |
| |
| 摘 要： | 针对深基坑的土钉和桩锚组合式支护体系,通过数值计算分析基坑开挖过程对支护体系结构的位移、应力及稳定安全系数等的影响,分析基坑开挖过程引起的地层变形规律。对2种基坑支护方案进行计算,其一为采用2道土钉加上1道锚杆的土钉与桩锚组合式结构,其二为采用4道土钉加上3道锚杆的土钉与桩锚组合式结构。根据计算结果,对不同支护方案下基坑的支护效果进行了对比研究,进而分析支护方案的可行性,最后将现场实际采用的支护方案与实测结果进行了比较。
|
| 关 键 词： | 基坑支护 土钉 桩锚 支护体系 数值模拟 |
| 收稿时间： | 2013/12/8 0:00:00 |
| 修稿时间： | 2014/5/29 0:00:00 |
Numerical Simulation of Stress and Deformation on Combined Retaining System of Soil Nails and Pile-anchors |
| |
| LIU Li-ping,LIU Jing-jing,ZHANG Peng,SHI Ming-lu and YAN Xian-feng.Numerical Simulation of Stress and Deformation on Combined Retaining System of Soil Nails and Pile-anchors[J].Exploration Engineering(Drilling & Tunneling),2014,41(8):53-57. |
| |
| Authors: | LIU Li-ping LIU Jing-jing ZHANG Peng SHI Ming-lu and YAN Xian-feng |
| |
| Institution: | (Hebei Research Institute of Construction and Geotechnical Investigation Co. , Ltd. , Shijiazhuang Hebei 050031, China) |
| |
| Abstract: | To the combined support system of soil nailing and pile-anchor for deep excavation, by the numerical calculation with FLAC3D software, the analysis is made on the influence of excavating process to displacement, stress and stability safety factor of support system structures, as well as the laws of ground deformation caused by excavation. 2 retaining schemes are considered; one is the retaining structure composted by 2 layer soil nails and 1 pile-anchor, the other one is the retaining structure composted by 4 layer soil nails and 3 pile-anchors. Based on the calculation results, comparative study is carried out on the support effects of different schemes to analyze the feasibility of the support scheme. The paper presents the comparison of support effects between the adopted scheme in the engineering and field measured results. |
| |
| Keywords: | foundation pit support soil nail pile-anchor support system numerical simulation |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《探矿工程》浏览原始摘要信息 |
| 点击此处可从《探矿工程》下载免费的PDF全文 |
|
