| 土工格栅加筋对高土石坝坝坡地震稳定性影响研究 |
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| 引用本文： | 周扬,余钧陶.土工格栅加筋对高土石坝坝坡地震稳定性影响研究[J].水电能源科学,2014,32(2):72-75. |
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| 作者姓名： | 周扬 余钧陶 |
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| 作者单位： | 大连理工大学 建设工程学部土木工程学院， 辽宁 大连 116024;大连理工大学 建设工程学部土木工程学院， 辽宁 大连 116024 |
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| 基金项目： | 地震行业科研专项经费(201208013)；国家自然基金重大研究计划集成项目（91215301） |
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| 摘 要： | 以300m级双江口心墙堆石坝为研究对象,采用有限元动力时程稳定与变形分析方法,研究了高土石坝顶部1/5坝高范围内采用土工格栅加筋措施对坝坡动力稳定与变形的影响。结果表明,采用土工格栅加筋措施后,增强了高土石坝坝顶区堆石体的整体稳定性,坝坡最危险滑弧深度增加,有效提高了坝坡安全系数;土工格栅加筋方案明显抑制了坝坡滑动位移,最小安全系数对应滑弧的累积滑动量减小。随着输入地震动峰值增加,土工格栅加筋方案对坝坡动力稳定贡献越大。
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| 关 键 词： | 高土石坝 坝坡稳定 土工格栅加筋 有限元动力法 安全系数 |
Study on Influence of Geo grid Reinforcement on Stability of High Earth rockfill Dam Slope |
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| ZHOU Yang and YU Juntao.Study on Influence of Geo grid Reinforcement on Stability of High Earth rockfill Dam Slope[J].International Journal Hydroelectric Energy,2014,32(2):72-75. |
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| Authors: | ZHOU Yang and YU Juntao |
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| Affiliation: | School of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China;School of Civil Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | By the dynamic finite element stability and deformation analysis method, the slope stability of the Shuangjiangkou core dam with 300 meters height level in meizoseismal area was analyzed. Two conditions of no reinforcement measure and with geo grid reinforcement at the top 1/5 dam height were considered. The results show that the dam stability is enhanced effectively with geo grid reinforcement; the dam slope safety factors are improved with deeper slippage arcs and the slippage of the sliding surface are decreased; with the increasing of the peak value of seismic motion input, the dam slope stability safety factors benefit from geo grid reinforcement significantly. |
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