【摘要】 在大坝稳定性数值分析方法的一般公式中,天然地震影响系数的确定,关系到大坝安全评价的可靠性。比较了我国和其他国家在地震设防规范中对天然地震影响系数的要求。利用场地类别与天然地震影响系数的周期关系,采用拟静力法推导出在7°地震烈度下各种场地类别的水平向天然地震影响系数的理论数值,并将其成功应用于某工程实践中,证明此研究结论有一定的科学性和实用性。更多还原

【Abstract】 In the general formula of numerical analysis method for dam stability,the reliability of safety evaluate for dam depends on the determination of natural earthquake influence coefficient.The different requirement for natural earthquake influence coefficient in earthquake resistant design code in China was compared with that in other countries.Based on the periodic relation between location category and the natural earthquake influence coefficient,theoretical values of horizontal natural earthquake influence coefficient for each kind of location category under 7° earthquake intensity level are deduced with pseudo-static method.It has been successfully applied into some project practice,proving result in this research being of scientific and practical value.更多还原