基于云计算的工程结构地震响应数值模拟

目的为提高超大规模工程结构地震响应分析的计算效率,提出利用云服务器开展地震响应数值模拟的方案.方法基于腾讯云等云计算环境,介绍云计算用于结构地震响应分析的可行性,并对云计算环境的搭建进行说明.利用Open Sees等软件,具体分析比较不同自由度数、不同规模的算例在云平台及本地计算环境中的计算效率.结果云平台的计算性能与本地计算环境的性能相当,可以代替本地计算环境进行地震响应分析;利用云平台并行处理计算任务,可以大大提高计算效率.结论云服务器在工程结构地震响应数值模拟中呈现出计算效率高、设置灵活、成本低的特点,具有良好的发展前景.

基于FEMA-P58方法的校园建筑地震经济损失预测案例分析

地震导致的建筑倒塌和人员死亡近年来得到了有效控制,但造成的经济损失却愈加严重。该文运用FEMA-P58建筑地震损失评价方法,进行建筑地震损失预测,以充分利用下一代性能化设计的优势。FEMA-P58方法所需要的各建筑的地震响应,通过基于多自由度集中质量剪切层(MCS)模型和弹塑性时程分析(THA)的建筑震害模拟来获得。以三栋典型建筑为例,进行了基于强度的地震损失预测,以说明该损失预测手段的实现过程。结果表明,在中震(PGA=0.2 g)、大震(PGA=0.4 g)作用下,建筑损失主要来自结构构件和墙体等位移敏感型非结构构件。

Influence of Structure Plane Size on Seismic Response of Soil-Structure Interaction

The influence of the change of structure plane size on seismic response was studied for a soil-structure interaction system.Based on the finite element method,a soil-structure interaction calculation model was established to analyze the seismic response by changing the structure plane size and choosing different earthquake waves for different soil fields.The results show that when the natural periods of vibration for different structure plane sizes are close,under the same earthquake wave,the total displacement on the top layer of the structure and the foundation rotation displacement decrease with the increase of structure plane size,and the proportion of superstructure elastic selfdeformation displacement to the total displacement increases with the increase of structure plane size.While for different types of sites and seismic waves,under the horizontal and vertical seismic waves,the seismic responses of different plane sizes have a similar change rule.