| 模拟软弱夹层动力特性的薄层单元及其工程应用 |
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| 引用本文： | 金峰,邵伟,张立翔,徐艳杰.模拟软弱夹层动力特性的薄层单元及其工程应用[J].工程力学,2002,19(2):36-40. |
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| 作者姓名： | 金峰 邵伟 张立翔 徐艳杰 |
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| 作者单位： | 1. 清华大学水利水电工程系,北京,100084
2. 昆明理工大学水利水电工程系,昆明,650051 |
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| 基金项目： | 国家自然科学基金项目(59709001) |
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| 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。
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| 关 键 词： | 薄层单元 重力坝 动力 夹层 |
| 文章编号： | 1000-4750(2002)02-036-05 |
A THIN-LAYER ELEMENT FOR SIMULATION OF STATIC AND DYNAMIC CHARACTERISTICS OF SOF T INTERLAYER AND ITS APPLICATION |
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| JIN Feng,SHAO Wei,ZHANG Li-xiang,XU Yan-jie.A THIN-LAYER ELEMENT FOR SIMULATION OF STATIC AND DYNAMIC CHARACTERISTICS OF SOF T INTERLAYER AND ITS APPLICATION[J].Engineering Mechanics,2002,19(2):36-40. |
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| Authors: | JIN Feng SHAO Wei ZHANG Li-xiang XU Yan-jie |
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| Affiliation: | JIN Feng1,SHAO Wei1,ZHANG Li-xiang2,XU Yan-jie1 |
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| 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. |
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| Keywords: | thin-layer element gravity dam dynamic interlayer |
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