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高土石坝筑坝材料特性、数值仿真和抗震措施
  工程抗震研究所

Materials Properties, Numerical Simulation and Aseismic Measures for High Earth-rockfill Dam


土工三轴仪的研制与开发。

      在大型三轴仪研制基础上,又自行研制了一台高精度中型液压三轴仪,为运用多级位移测试技术开展筑坝材料动力特性研究建立基础。

Based on the development of large-scale triaxial apparatus, an middle-scale one are prepared, which provides support to the research of materials properties for high earth-rockfill dam by using multi-displacement testing technique.
 

土体动力本构模型的改进。

      在土体动力本构模型方面,建立了土体多维量化记忆模型,提出了量化记忆模型参数的确定方法; 充分考虑堆石料残余变形的应力水平相关性,修正了沈珠江提出的残余变形模型,使修正后的模型更适用于高土石坝的地震变形分析,并在双江口、两河口、猴子岩等高土石坝中应用。

For the dynamic constitutive model of soils, a multidimensional scaled memory model is established, and a new approach to determine the model parameters is proposed simultaneously. Modified the residual deformation model put forward by Shen Zhu-Jiang fully considered the correlation of stress level. The modified model is more suitable for analysis of high earth-rockfill dam seimic permanenr deformation and has been used in several high earth-rockfill dams, such as Shuangjiang KouLianghe Kou and Houzi Yan.
 

土石坝液化分析方法。

      首次建议了饱和砂砾土振动时孔隙水压力的发展模式和液化后单调载荷下三直线模型,为土石坝动力反应分析和液化后变形分析提供了试验和理论依据。

A pore water pressure model of saturated sand-gravel during due to vibration is suggested first time, and a tri-linear model due to monotonic load of saturated liquefied sand-gravel composites is developed. This study provides the basis for analysis of dynamic and liquefaction induced deformation for high earth-rockfill dam.
 

           http://eeri.
 

砂土统一本构模型研究。

      从热力学基本定律出发,引入描述砂土松密的状态参量,建立了基于能量耗散的松密砂统一本构模型。发表的论文获"2006年度《水利学报》优秀论文奖" 

Starting from the basic laws of thermodynamics, develop a unified mechanics model with state-dependent dilatancy for loose sand and dense sand.  Outstanding Paper Award (Journal of Hydraulic Engineering, 2006) was received for the paper entitled “Unified mechanics model for sand based on thermomechanics”. 

           http://eeri.

 

土石坝有限元分析程序研制。

      首次采用新一代程序设计方法-面向对象、可视化和并行计算等,系统开发了高土石坝抗震安全评价软件系统,并在糯扎渡、大岗山、双江口、两河口、猴子岩等世界级高坝中应用。

Developed high earth-rockfill dam seimic security evaluation system with objected programmingvisual and Parallel Computing method in C++ and MFC first time. The system has been used in some world-class high earth-rockfill dams, such as Nuozha Du(Yunnan Province)Dagang Shan(Sichuan province)Shuangjiang Kou(Sichuan province)Lianghe Kou(Sichuan province) and Houzi Yan(Sichuan province) etc.
  

           http://eeri.


 

土石坝抗震措施研究。

      指出地震时高土石坝反应特性、破坏性态并建议了可行有效的抗震对策,首次提出了一个综合考虑多种减震措施的高土石坝抗震加固方案,并在糯扎渡和吉林台大坝中应用。
Point out the response and failure behavior and put forward feasible and valid seismic fortification measures. An aseismic strengthening method comprehensively considered various shock absorption measures is developed and has been applied in Nuozhadu and Jilintai dams.

 

           http://eeri.

 

核电站海域工程堤防构筑物抗震安全评价方法研究。

      在国内率先开展核电厂海域工程堤防构筑物的抗震安全评价研究,提出了对于核电厂等重要堤防构筑物,应联合运用土工试验、物模试验和数模分析技术进行抗震安全评价,并建立了一套完整的核电厂海域工程堤防构筑物的抗震安全评价体系。
Lead to develop the study on seimic security evaluation method in China, and establish a complete seimic security evaluation system for nuclear power station and costal engineering. Put forward comprehensively adopting geotechnical test
physical model experiment and numerical simulation for seimic security evaluation for nuclear power station and other important constructions.

 

           防波堤动力模型试验
防波堤动力模型试验

           http://eeri.

 

 

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