摘要
目的简化出框架结构竖向连续倒塌破坏影响范围简化计算表,以便于震后应急道路有效宽度的规划控制.方法根据地震作用下框架结构竖向连续倒塌的破坏特点及仿真模拟实验来确定相应的倒塌模型,借鉴定向爆破中关于瓦砾堆积范围的假定确定框架结构竖向连续倒塌的瓦砾分布形状及计算假定,采用数学方法推导建筑物竖向连续倒塌影响范围计算公式,并采用数据拟合的方法对理论公式进行简化.结果简化公式计算值与理论公式计算值最大相对误差为2.01%,平均相对误差为0.73%,且两者相关系数高达0.999 2.结论推导出的理论公式与简化公式高度相关,且两者相对误差在允许范围内,得出的建筑物竖向连续倒塌破坏影响范围简化计算表可用于规划分析.
In order to plan the effective width of emergency road after earthquake, a simplified formula for influence range of vertical progressive-collapse frame structures by earthquake was deduced and a simplified table for calculation was also given in this paper. According to the damage characteristic of vertical progressive-collapse frame structures by earthquake and simulation tests, the corresponding collapse model was built. Based on the assumption of accumulation scope by directional blasting, the debris shape was determined. On the basis of above assumptions, a theoretical formula of influence range of progressive collapsed frame structures was deduced and simplified with data fitting method. Compared with the theoretical value, it is found that the maximum relative error of the simplified formula value is less than 2.01%, the average relative error is O. 73 %, and the correlation coefficient is O. 9992. It shows that the simplified formula is highly correlated with the theoretical formula and the relative error is within permission, which indicates that the simplified calculate table for influence range of vertical progressive-collapse frame structures is available to planning analysis.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2014年第4期667-675,共9页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家十二五科技支撑计划项目(2011BAJ08B03
2011BAJ08B05)
国家自然科学基金项目(51208017)
关键词
地震
竖向连续倒塌
影响范围
简化公式
简化计算表
earthquake
vertical progressive-collapse
influence range
simplified formula
simplifled table
