城市区域建筑震害高真实度模拟

发布时间：2018-03-13 09:47

本文选题：城市区域　切入点：震害预测　出处：《土木工程学报》2014年07期 　论文类型：期刊论文

【摘要】：基于精细化的结构模型和物理引擎技术,实现城市区域建筑震害的准确预测和真实感显示。采用多自由度的精细的结构模型,通过非线性时程分析方法准确地预测城市区域大规模建筑的震害特征,并获得建筑各个楼层的震害细节。提出基于精细化预测结果的建筑震害动态可视化方法,真实地表现了建筑震害过程。在此基础上,提出一个综合物理引擎、图形引擎和时程分析的模拟算法,展示建筑倒塌过程中的复杂运动和交互碰撞。选择我国一个真实的中型城市作为算例进行区域建筑震害模拟,结果表明基于物理引擎的模拟方法弥补时程分析方法在倒塌分析上的不足,完整、准确、具有真实感地模拟区域建筑震害全过程,为城市区域建筑的防灾减灾提供技术支持。
[Abstract]:Based on the refined structural model and physical engine technology, the accurate prediction and realistic display of earthquake damage of urban buildings are realized. The fine structure model with multiple degrees of freedom is adopted. The earthquake damage characteristics of large scale buildings in urban areas are accurately predicted by nonlinear time history analysis method, and the details of earthquake damage on each floor of buildings are obtained. A dynamic visualization method of building earthquake damage based on refined prediction results is proposed. On the basis of this, a comprehensive simulation algorithm of physical engine, graphics engine and time-history analysis is proposed. The complex motion and interactive collision during the collapse of buildings are demonstrated. A real medium-sized city in China is selected as an example to simulate the earthquake damage of regional buildings. The results show that the simulation method based on physical engine can make up for the shortage of time-history analysis method in collapse analysis. It is complete, accurate and realistic to simulate the whole process of earthquake damage of regional buildings, which provides technical support for disaster prevention and mitigation of urban buildings.
【作者单位】：清华大学;
【基金】：国家科技支撑计划课题(2013BAJ08B02) 国家自然科学基金(51178249,51308321) 中国博士后科学基金(2013M530632)
【分类号】：P315.9;TU311.3

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