In order to quantify the seismic performance of buildings reasonably and effectively,the paper puts forward the method of earthquake loss evaluation of buildings based on story EDP-DV functions.Firstly,considering the...In order to quantify the seismic performance of buildings reasonably and effectively,the paper puts forward the method of earthquake loss evaluation of buildings based on story EDP-DV functions.Firstly,considering the randomness of seismic response parameters,the distribution functions of story EDPs at a given level of ground motion intensity can be achieved through Incremental Dynamic Analysis.Meanwhile,story EDP-DV functions which relate story response parameters(story EDPs)directly to economic losses(DVs)can be created beforehand by integrating component fragility functions and loss functions;they can be called directly without double computation for the same type of buildings.Lastly,the economic losses of a building at a given level of ground motion intensity can be achieved by combining the distribution functions of story EDPs and story EDP-DV functions.On this occasion,the proposed method omits the damage measure in PEER methodology and makes the story not component as a unit of account to evaluate the earthquake losses of a building reasonably and accurately.The numerical example shows that the proposed method is feasible and reasonable to quantify the seismic performance of buildings.展开更多
为分析煤氧化-热解进程的增失重阶段与动力学三因子,根据同一氧体积分数、5种不同升温速率下煤氧化-热解的TG-DTG曲线,探讨了煤氧化-热解进程经历的增失重阶段,基于Popescu法计算了不同阶段的动力学三因子。结果表明实验煤样的氧化-热...为分析煤氧化-热解进程的增失重阶段与动力学三因子,根据同一氧体积分数、5种不同升温速率下煤氧化-热解的TG-DTG曲线,探讨了煤氧化-热解进程经历的增失重阶段,基于Popescu法计算了不同阶段的动力学三因子。结果表明实验煤样的氧化-热解进程可分为失水失重、氧化增重、燃烧失重和燃尽恒重4个阶段。失水失重、氧化增重和燃烧失重阶段的反应机理分别为Mample单行法则、三维扩散模型和相边界反应的收缩球体模型;活化能分别为54.128 k J·mol-1、152.252 k J·mol-1和134.458 k J·mol-1;指前因子的自然对数分别为16.832 s-1、32.597s-1和18.365 s-1。展开更多
文摘In order to quantify the seismic performance of buildings reasonably and effectively,the paper puts forward the method of earthquake loss evaluation of buildings based on story EDP-DV functions.Firstly,considering the randomness of seismic response parameters,the distribution functions of story EDPs at a given level of ground motion intensity can be achieved through Incremental Dynamic Analysis.Meanwhile,story EDP-DV functions which relate story response parameters(story EDPs)directly to economic losses(DVs)can be created beforehand by integrating component fragility functions and loss functions;they can be called directly without double computation for the same type of buildings.Lastly,the economic losses of a building at a given level of ground motion intensity can be achieved by combining the distribution functions of story EDPs and story EDP-DV functions.On this occasion,the proposed method omits the damage measure in PEER methodology and makes the story not component as a unit of account to evaluate the earthquake losses of a building reasonably and accurately.The numerical example shows that the proposed method is feasible and reasonable to quantify the seismic performance of buildings.
文摘为分析煤氧化-热解进程的增失重阶段与动力学三因子,根据同一氧体积分数、5种不同升温速率下煤氧化-热解的TG-DTG曲线,探讨了煤氧化-热解进程经历的增失重阶段,基于Popescu法计算了不同阶段的动力学三因子。结果表明实验煤样的氧化-热解进程可分为失水失重、氧化增重、燃烧失重和燃尽恒重4个阶段。失水失重、氧化增重和燃烧失重阶段的反应机理分别为Mample单行法则、三维扩散模型和相边界反应的收缩球体模型;活化能分别为54.128 k J·mol-1、152.252 k J·mol-1和134.458 k J·mol-1;指前因子的自然对数分别为16.832 s-1、32.597s-1和18.365 s-1。
