摘要
针对发生灾难时高层建筑物内逃生人员的安全避难问题,对城市紧急避难装置进行了结构设计及抗跌落冲击研究,提出了新型城市紧急避难装置结构模型。模型舱体结构采用了分段式设计,根据布置需求合理设置舱体的段数。利用ANSYS/LS-DYNA软件的跌落测试程序模块DTM对舱体进行了跌落分析,模拟了舱体从高度5 m处直接跌落及在舱体的底部添加缓冲支座后直接跌落,进行了跌落冲击分析。研究结果表明:舱体添加缓冲支座后在跌落过程中最大应力为433 MPa,相比于直接跌落冲击应力降低明显,缓冲支座的变形吸能消耗了部分冲击能量减轻了地面对舱体的直接冲击;本文研究可对城市紧急避难装置的设计和制造提供理论指导和技术支持。
Aiming at the safe evacuation problem of escapers in high-rise buildings in the event of a disaster,the structure design and antifalling impact analysis of urban emergency evacuation devices were studied.A new type of urban emergency evacuation device structure model was proposed and the structure was segmented design,which the numbers of the cabin were set reasonably according to the layout demand.Using the drop test module DTM of ANSYS/LS-DYNA software to analyze the fall shock of the cabin from the height of 5 m,under the conditions of the cabin dropping directly and adding buffer supports at the bottom of the cabin.The results indicated that the maximum stress in the falling process is 433 MPa,and the stress is reduced significantly compared to the direct fall shock,for the deformation energy of the buffer supports consumes part of the impact energy to reduce the direct impact.This study provides theoretical guidance and technology support for the design and manufacture of urban emergency evacuation devices.
作者
李松梅
景秀敏
王勇
常德功
王吉利
LI Song-mei;JING Xiu-min;WANG Yong;CHANG De-gong;WANG Ji-li(College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)
出处
《机电工程》
CAS
2017年第12期1432-1436,共5页
Journal of Mechanical & Electrical Engineering
基金
山东省自然科学基金资助项目(ZR2015EM037
ZR2016EEP12)
青岛市民生计划资助项目(16-6-2-59-nsh)
关键词
城市紧急避难装置
分段式设计
跌落冲击分析
缓冲支座
urban emergency evacuation device
segmented design
fall shock analysis
buffer supports
