CAJ | 학술논문

基于搜集的国内多座土石坝堆石料的动力试验成果,研究了堆石料的振动残余变形特性.在整理试验数据过程中,尝试对沈珠江模型进行改进,改进模型充分考虑固结比对堆石料振动残余变形特性的影响,并能更好地拟合试验数据.通过对理想面板堆石坝进行地震动残余变形计算,对比分析了与沈珠江模型、孔宪京改进模型以及凌华改进模型的异同,阐述了本次改进模型的合理性.此外,在统计大量试验数据的基础上,给出了c - dg与/2 vr c S - dg关系曲线的平均线及上、下包络dr l线,采用该统计曲线对理想面板堆石坝进行了地震残余变形敏感性分析.计算结果表明:参数c4、c5对坝体残余变形影响较大,参数c1、c2影响程度较小;选取均值曲线参数可应用于缺乏动力试验的中小型土石坝抗震设计.
기우수집적국내다좌토석패퇴석료적동력시험성과,연구료퇴석료적진동잔여변형특성.재정리시험수거과정중,상시대침주강모형진행개진,개진모형충분고필고결비대퇴석료진동잔여변형특성적영향,병능경호지의합시험수거.통과대이상면판퇴석패진행지진동잔여변형계산,대비분석료여침주강모형、공헌경개진모형이급릉화개진모형적이동,천술료본차개진모형적합이성.차외,재통계대량시험수거적기출상,급출료c - dg여/2 vr c S - dg관계곡선적평균선급상、하포락dr l선,채용해통계곡선대이상면판퇴석패진행료지진잔여변형민감성분석.계산결과표명:삼수c4、c5대패체잔여변형영향교대,삼수c1、c2영향정도교소;선취균치곡선삼수가응용우결핍동력시험적중소형토석패항진설계.
Based on many dynamic test results about rockfill materials of domestic earth-rock dams, the dynamic residual deformation characteristics of the rockfill materials are studied. During the process of collecting test data, the primary residual deformation model presented by Shen Zhu-jiang is modified along with considering the affect of consolidation ratio and fitting the test data well. Through dynamic residual deformation analysis and calculation of ideal concrete faced rockfill dam (CFRD), the similarities and differences between the primary residual deformation models presented by Shen Zhu-jiang, Kong Xian-jing, Ling Hua and this paper are given. Then, the rationality of this improved model is elaborated. In addition, based on the statistic analysis of test results, the average, upper and lower envelopes of the curves of c - dg and 2 vr c S - dg are proposed to calculate the seismic dr/l residual deformation of the rockfill materials. With the application of the above, the deformation behaviors of ideal CFRD are numerically analyzed. The results show that the parameters of c4 and c5 have great impact on the residual deformation of the dam;but the parameters of c1 and c2 have almost no effect. It’s significant to apply the mean curve parameters in seismic design of medium and small earth-rock dams and the result has certain reference value.