玻璃幕墙建筑在风致碎片冲击下的概率分析  

Probabilistic Analysis of Curtain Walls Impacted by Windborne Debris

作　　者：李海云[1] 李玉学[1,2] 舒赣平[3] 

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043 [2]道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学),河北石家庄050043 [3]东南大学土木工程学院,江苏南京210096

出　　处：《建筑科学》2016年第11期7-13,共7页Building Science

基　　金：国家自然科学基金资助项目(51278314);河北省大型基础设施防灾减灾协同创新中心项目;河北省教育厅青年基金项目(Z665724);河北省重点学科建设项目

摘　　要：灾害及研究表明,风致碎片是城市玻璃幕墙等围护结构遭受破坏的主要原因。根据球状碎片的特点,对球状碎片的运动轨迹进行数值模拟,并同文献中的试验数据进行比较。建立风致碎片冲击玻璃幕墙的三维模型,利用蒙特卡洛法从概率统计分析的角度研究碎片对玻璃幕墙建筑造成的危害,并对模型进行参数化分析。分析结果表明玻璃幕墙与碎片源之间的距离、平均风速和碎片密度对碎片冲击概率的影响明显,当这些参数满足一定条件时,必须考虑玻璃幕墙遭受风致碎片冲击的危害。The windborne debris is main damage causes of the envelop destruction such as curtain walls according to the post-damage investigations. The development of a numerical algorithm for investigating the motion of the windborne compact debris is presented, the simulation results are compared to experimental data form literature. The three-dimensional （3D） model of curtain walls impacted by windborne debris is established, probability statistical approach are selected to study the windborne debris hazards to curtain walls using Monte Carlo simulation. The parameters of distance from debris to curtain wails, mean wind speed and debris density are selected to investigate the probability of debris impact to curtain walls. The results show that, the impact probability has the significant relationship with these parameters, and the damage of curtain walls impacted by windborne debris must be considered as the parameters satisfy the curtain conditions.

关 键 词：风致碎片 玻璃幕墙 蒙特卡洛法 概率统计分析 冲击概率 

分 类 号：TU352.2[建筑科学—结构工程] TU382