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| 现行土层地震反应分析存在的问题 | |
| 引用本文： | 刘德东,齐文浩,张宇东,兰景岩.现行土层地震反应分析存在的问题[J].防灾科技学院学报,2009,11(3):34-37. |
| 作者姓名： | 刘德东 齐文浩 张宇东 兰景岩 |
| 作者单位： | 1. 中国地震局工程力学研究所,黑龙江,哈尔滨,150080 2. 防灾科技学院,河北,三河,065201 3. 中国地震局地壳应力研究所,北京,100085 |
| 基金项目： | 中国地震局工程力学研究所基本科研业务费专项基金，中央级公益性科研院所基本科研业务专项基金 |
| 摘 要： | 工程上广泛应用的现行土层地震反应分析方法即为借助快速傅里叶变换和迭代法的等效线性化频域方法.简要介绍了现行土层地震反应分析方法,结合具体算例,再现了现行土层地震反应分析方法在实际应用中存在的四个问题,一是对个别输入加速度时程的离散点个数无效,二是底部存在软夹层计算结果异常,三是输入地震动较大、场地较软时计算结果不合理,四是可能出现死循环现象.针对这四个问题提出了现行土层地震反应分析方法改进的方向,对以后土层地震反应分析方法的发展进行了展望. |
| 关 键 词： | 现行土层地震反应分析 等效线性化频域方法 问题 改进 |
Problems Existing in Current Seismic Response Analysis for Soil Layers |
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| Liu Dedong,Qi Wenhao,Zhang YuDong,Lan Jingyan.Problems Existing in Current Seismic Response Analysis for Soil Layers[J].Journal of Institute of Disaster-prevention Science and Technology,2009,11(3):34-37. | |
| Authors: | Liu Dedong Qi Wenhao Zhang YuDong Lan Jingyan |
| Institution: | Liu Dedong1,Qi Wenhao1,Zhang YuDong2,Lan Jingyan3(1.Institue of Engineering Mechanics,China Earthquake Administration,Harbin 150080,2.Institute of Disaster-Prevention Science and Technology,Sanhe Heibei 0652013.Institute of Crustal Dynamics,Beijing 100085) |
| Abstract: | The current widely used methods of seismic response analysis for soil layers in engineering are equivalent linearization frequency domain method which is based on FFT and iterative method.This article briefly introduces these methods and reappears the four problems existing in them in combination with practical work.Firstly,the program could not run when some individual discrete point numbers from acceleration time history are input.Secondly,the calculation results become abnormal when soft layer exists at ... |
| Keywords: | equivalent linearization method equivalent linearization frequency domain method problem perfect |
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