| 锚注联合支护效果的数值模拟研究 |
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| 引用本文： | 李红军,刘成禹,李云.锚注联合支护效果的数值模拟研究[J].铁道工程学报,2010,27(7). |
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| 作者姓名： | 李红军 刘成禹 李云 |
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| 作者单位： | 1. 中铁隧道集团有限公司,河南,洛阳,471000
2. 福州大学,福州,350108 |
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| 摘 要： | 研究目的:采用数值计算的方法从控制隧道变形、塑性区扩展,提高锚杆锚固力,减少初期支护受力等方面对锚注支护与常规喷锚支护的支护效果进行对比研究.研究结论:以具体工程为例,采用数值计算的方法对破碎软弱围岩条件下锚注支护与常规喷锚支护的支护效果进行了系统分析和对比研究.研究表明:对松散、破碎围岩而言,锚注联合支护通过提高围岩强度、锚杆锚固力,从而提高围岩自承能力及支护结构作用在洞室周边的径向压力,与常规喷锚支护相比可有效限制围岩变形,抑制塑性区的发展,提高锚杆锚固力,减少钢拱架及喷射混凝土层的受力,提高初期支护稳定性,特别适宜于破碎软弱围岩的支护.
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| 关 键 词： | 锚注联合支护 喷锚支护 围岩变形 数值模拟 |
Research on Supporting Effect of Bolt - grouting Combined Support by Means of Numerical Simulation |
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| LI Hong-jun,LIU Cheng-yu,LI Yun.Research on Supporting Effect of Bolt - grouting Combined Support by Means of Numerical Simulation[J].Journal of Railway Engineering Society,2010,27(7). |
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| Authors: | LI Hong-jun LIU Cheng-yu LI Yun |
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| Affiliation: | LI Hong-jun1,LIU Cheng-yu2,LI Yun2(1.China Railway Tunnel Group Co.Ltd,Luoyang,Henan 471000,China,2.Fuzhou University,Fuzhou,Fujian 350108,China) |
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| Abstract: | Research purposes:By means of numerical simulation,the comparative research is done on supporting effects of bolt-grouting support and bolt-shotcrete support in terms of controlling tunnel deformation and expansion of plastic zone,increasing anchoring force and decreasing the stress on initial support.Research conclusions:Based on the concrete engineering project,in this paper,a systematic analysis is made of and a comparative research is done on the supporting effects of bolt-grouting support and bolt-shot... |
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| Keywords: | bolt-grouting support bolt-shotcrete support surrounding rock deformation numerical simulation |
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