【摘要】 在有厚度的Goodman单元模型基础上,借鉴Desai构筑接触面单元的思想,提出了一种能够模拟夹层静、动力特性的薄层单元。在求解过程中,利用混合迭代,比较高效率地实现了超余应力调整与嵌入调整统一迭代,加快了迭代速度,为工程应用奠定了基础。利用这种夹层单元对某重力坝的抗震稳定进行了分析,分析结果表明该重力坝的动力稳定由坝前的软弱夹层323-T控制,抗震安全系数约为2.50。更多还原

【Abstract】 Based on the Goodman element and the concept of the thin element proposed by Desai, a new type of thin layer element is presented. This thin layer element can simulate the static and dynamic characteristics of soft interlayer. Utilizing a hybrid iteration scheme, the adjustments of overloading stresses and overlapping are implemented simultaneously and efficiently, so the speed of iteration is enhanced. Employing the present thin layer element, the seismic stability analysis of a gravity dam is performed. The results show that the dynamic stability of the gravity dam is controlled by a soft layer 323-T in front of the gravity dam and corresponding safety factor is 2.50 approximately.更多还原