| 循环高温环境下隧道结构的弹塑性有限元分析 |
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| 引用本文： | 左德元,郑安启.循环高温环境下隧道结构的弹塑性有限元分析[J].西南交通大学学报,2001,36(2):172-175. |
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| 作者姓名： | 左德元 郑安启 |
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| 作者单位： | 1. 西南交通大学土木工程学院, 四川 成都 610031
2. 铁道部第二勘测设计院， 四川 成都 610031 |
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| 摘 要： | 采用杂交／混合有限元方法对循环高温环境下的隧道结构进行了弹塑性分析。首先对隧道开挖和加衬进行了数值计算分析；然后根据不稳定传热理论，对隧道局部衬砌进行了在循环高温环境下的有限元分析。分析 结果表明，在常温下隧道内部应力分布合理；在常温下隧道内部应力分布合理；在循环高温环境下，衬砌表层处于塑性屈服状态，长期不进行处理会造成衬砌表层剥落。
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| 关 键 词： | 隧道 弹塑性分析 有限元分析 循环高温环境 不稳定传热理论 结构分析 围岩 衬砌 |
| 文章编号： | 0258-2724（2001）02-0172-04 |
An Elastic-Plastic Finite Element Analysis on
Tunnel Structures at Cycled Temperatures |
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| ZUO De-yuan ,ZHENG An-qi.An Elastic-Plastic Finite Element Analysis on
Tunnel Structures at Cycled Temperatures[J].Journal of Southwest Jiaotong University,2001,36(2):172-175. |
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| Authors: | ZUO De-yuan ZHENG An-qi |
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| Institution: | ZUO De-yuan 1,ZHENG An-qi 2 |
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| Abstract: | An analysis is conducted The excavation and lining of a tunnel structure are analyzed with numerical calculation. Then, according to the principle of unstable heat transfer, the properties of local concrete linings of the tunnel in the condition of cycled temperatures are studied with elastic-plastic hybrid/mixed finite element method. The results show that at natural temperatures, the stresses in the tunnel structure are evenly distributed. On the other hand, the cycled temperature may cause the surfaces of the linings to become plastic and pill off if unattended. |
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| Keywords: | tunnels elastic-plastic analysis finite element analysis |
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