| 石笼拱柔性拦截坝新技术及其数值模拟 |
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| 引用本文： | 苏洁,周成,陈生水,何建村,何宁,吴艳,张桂荣.石笼拱柔性拦截坝新技术及其数值模拟[J].岩土工程学报,2015,37(2):269-275. |
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| 作者姓名： | 苏洁 周成 陈生水 何建村 何宁 吴艳 张桂荣 |
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| 作者单位： | 1. 四川大学水力学与山区河流开发保护国家重点实验室,四川 成都 610065; 2. 水利部土石坝破坏机理与防控技术重点实验室,江苏 南京 210024; 3. 新疆水利水电科学研究院,新疆 乌鲁木齐 830049 |
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| 基金项目： | 水利部公益性行业科研专项项目(201301022，201201037)；国家自然科学基金重大研究计划集成项目(91215301)；水利部土石坝破坏机理与防控技术省重点实验室开放基金项目(YK913002)；江苏省交通运输科学研究计划项目(2011Z01-1)；国家自然科学基金青年基金项目 |
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| 摘 要： | 针对常见的泥石流拦挡结构被冲击破坏的问题,提出了柔性石笼拱拦截坝新技术。柔性石笼拱以石笼为主要材料,砌筑成拱形,上游面铺设废旧轮胎防冲垫层,拦截泥石流。利用ANSYS LS-DYNA软件,分析了柔性石笼拱结构对泥石流冲击的动力响应,并与刚性浆砌石结构进行对比。通过MIDAS GTS软件计算,分析了石笼拱拦蓄泥石流后孔隙水压力变化及静力稳定特性。数值计算结果表明,柔性石笼拱结构能合理地优化结构受力,变形自适应,减小巨石冲击荷载以及饱和泥石流的浆体压力对结构的不利影响。
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| 关 键 词： | 泥石流防治 石笼拱 抗冲击 柔性结构 变形自适应 |
| 收稿时间： | 2014-05-20 |
Numerical simulation of flexible gabion arch dam to prevent and control debris flow blocks |
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| SU Jie,ZHOU Cheng,CHEN Sheng-shui,HE Jian-cun,HE Ning,WU Yan,ZHANG Gui-rong.Numerical simulation of flexible gabion arch dam to prevent and control debris flow blocks[J].Chinese Journal of Geotechnical Engineering,2015,37(2):269-275. |
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| Authors: | SU Jie ZHOU Cheng CHEN Sheng-shui HE Jian-cun HE Ning WU Yan ZHANG Gui-rong |
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| Affiliation: | 1. State Key Laboratory of Hydraulics and Mountain River Engineering, Chengdu 610065, China; 2. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth Rock Dam of the Ministry of Water Resource, Nanjing 210024, China; 3. Xinjiang Hydraulic and Hydropower Research Institute, Urumqi 830049, China |
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| Abstract: | Most of the widely used check dams are destroyed by huge impact force of debris flows. Flexible gabion arch dam is thus designed. The structure is made of stone gabions and built in the shape of arch with junked tires attached to the upside. Numerical simulation is performed using the software ANSYS LS-DYNA, focusing on the dynamic response of the structure to the impact of the debris flows. The pore pressure and statistic stability of the above two debris retaining structures are analyzed by MIDAS-GTS. The results indicate that the flexible arch structure can effectively reduce the impact force and mud flow pressure through appropriate deformation. |
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| Keywords: | debris flow control gabion arch dam impact resistance flexible structure deformation self-adaption |
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