PDF《马云东收稿日期：》

收稿日期: 资助项目: 作者简介:崔铁军(1983-) ,男,辽宁沈阳人,工程师,安全工程博士,力学博士后,讲师,研究方向: 安全理论、数值模拟、 算法,E-mail:ctj.

159@163.com;

李莎莎(1988-) ,女,辽宁盘锦人,博士研究生,主要研究方向:安全系统工程,系统可 靠性.马云东(1964-),男,内蒙古赤峰人,教授,博士生导师,研究方向:安全科学与工程,环境科学与工程, E-mail:yundongm@126.com;

王来贵(1962-) ,男,博士,教授,主要从事岩石力学系统稳定性理论、环境岩石学方面研究, E-mail: wangyande2421@163.com 高层建筑动力灾害模拟分析(Ⅰ)-爆破所致建筑倒塌对相邻建筑的破坏 研究 崔铁军 1,2,3 李莎莎 1,2 马云东

3 王来贵

4 (1 安全科学与工程学院, 辽宁工程技术大学,辽宁 阜新 123000;

2 矿山热动力灾害与防治教育部重点实验室,辽宁 阜新 123000;

3 辽宁省隧道与地下结构工程技术研究中心, 大连交通大学, 辽宁 大连 116028;

4 辽宁工程技术大学 力学与工程学院 阜新 123000) 摘要:为了解超高层建筑因爆破所致的倒塌或倾倒过程对周围建筑产生的破坏情况,使用基于颗粒流理论的 PFC3D 作为模 拟平台对该过程进行模拟.构建了 A,B 两栋结构相同,高度不同的超高层建筑,其相距 30m.模拟分为三种工况(爆破点 炸药量为

106 J、107 J、108 J) ,在其他条件不变情况下模拟了在 A 建筑爆破后倾倒或坍塌对 B 建筑的影响.模拟结果表明: 当爆破药量为

106 J 时,两建筑碰撞后 B 栋先于 A 栋坍塌,分别历经是 72s 和520s.当爆破药量为

107 J 时,A 栋与 B 栋历经 84s 后完成坍塌过程.这两种药量使建筑 A 均产生倾倒,在实际的过程中应避免.当爆破药量为

108 J 时,可以完全破坏核 心筒,便会产生对周围建筑最有利的 A 栋坐塌破坏,进而减少对周围建筑的影响. 关键字:建筑安全;

爆破;

倒塌或倾倒;

相邻建筑;

影响研究 Simulation and analysis of dynamic disaster of high rise building(Ⅰ)- Damage of building caused by blasting of adjacent building CUI Tie-jun1,2,3 LI Sha-sha1,2 MAYun-dong3 WANG Lai-gui4 (1 College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;

2 Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education, Fuxin Liaoning 123000, China;

3 Tunnel &

Underground Structure Engineering Center of Liaoning, Dalian Jiaotong University, Dalian Liaoning 116028, China;

4 School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000) Abstract: In order to understand the high rise building damage caused by the collapse or dumping process of the surrounding buildings after blasting, the damage process is simulated based on PFC3D. High rise buildings (A and B) are constructed with the same structure;

but their heights are different;

the distance between them is 30m. The simulation is divided into three kinds of working conditions (explosive equivalent is

106 J、

107 J、

108 J). With other conditions unchanged, the influence of dumping or collapse of building A to building B is simulated. Simulation results show that: when the explosive equivalent is

106 J, the building B collapsed before A after two building collision, respectively after 72s and 520s. When the explosive equivalent is

107 J, the two building are the completion of collapse after 84s. The above two equivalent make the building A dumping, and can not be avoid. When the explosive equivalent is