轻型木结构地震需求估计方法研究

发布时间：2018-06-18 10:23

本文选题：地震需求估计 + 轻型木结构　；参考：《长沙理工大学》2015年硕士论文

【摘要】：现代轻型木结构建筑是一种较为新颖的结构形式,合理的抗震评估方法将直接影响对其抗震性能的评价。结构抗震性能评估的核心任务是对结构在地震作用下的各种反应量(如力,位移及能量等)进行分析,从而确定结构对可能发生地震的抵抗能力。基于性能的抗震研究已经成了国内外抗震工程领域专家、学者们研究的重点。本文结合基于性能的抗震工程的基本理念,对轻型木结构地震需求估计方法进行创新,具体内容如下:1.对自适应Pus hover分析方法以及模态Pus hover分析方法中的不足之处进行了比较分析,进而修正了一般Pus hover分析方法,提出一种改进轻型木结构建筑的Pushover分析方法,可大幅提高Pus hover方法对层间位移的估计精度。2.在以上研究的基础上,利用改进的Pushover分析方法估计一个足尺两层轻型木结构建筑在可能发生地震作用下的水平位移需求。3.研究多自由度体系在地震荷载作用下的累积耗能,论证多自由度体系结构与其等效单自由度体系之间的关系。4.合理描述轻型木结构建筑的结构性能水准,建立其结构性能水准与非线性位移、耗能及整体损伤指数之间的量化对应关系,提出适用于轻型木结构建筑基于性能的综合抗震评估方法。
[Abstract]:Modern light wood structure is a novel structural form. A reasonable seismic evaluation method will directly affect the evaluation of its seismic performance. The core task of seismic performance evaluation of structures is to analyze the responses (such as force, displacement and energy) of structures under earthquake, so as to determine the resistance of structures to possible earthquakes. Performance-based seismic research has become the focus of experts and scholars in the field of seismic engineering at home and abroad. Based on the basic concept of performance-based seismic engineering, this paper innovates the seismic demand estimation method of light wood structures, the concrete contents are as follows: 1. In this paper, the shortcomings of adaptive bus hover analysis and modal bus hover analysis are compared and analyzed, and then the general bus hover analysis method is modified, and an improved pushover analysis method for light wooden structures is proposed. This method can greatly improve the accuracy of the estimation of interstory displacement by using the Pus hover method. On the basis of the above research, the improved pushover analysis method is used to estimate the horizontal displacement requirement of a full-scale two-story light wooden building under the possible earthquake. The cumulative energy dissipation of multi-degree-of-freedom system under earthquake load is studied. The relationship between the multi-degree of freedom system structure and its equivalent single-degree-of-freedom system is demonstrated. The structural performance level of light wood structure is described reasonably, and the quantitative corresponding relationship between structural performance level and nonlinear displacement, energy consumption and overall damage index is established. A performance-based comprehensive seismic assessment method for light wood structures is proposed.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU366.2;TU352.1

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