Dynamic Response Analysis of Singlelayer Spherical Reticulated Shell with Sub Steel Column Under Impact Load(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2015年03期
- Page:
- 21-27
- Research Field:
- Publishing date:
Info
- Title:
- Dynamic Response Analysis of Singlelayer Spherical Reticulated Shell with Sub Steel Column Under Impact Load
- Author(s):
- WANG Xiu-li; ZHANG Fu-qiang; YANG Wen-wei; MA Xiao-tong
- School of Civil Engineering, Lanzhou University of Technology
- Keywords:
- impact load; reticulated shell; steel column; response mode; dynamic response
- PACS:
- -
- DOI:
- -
- Abstract:
- To study dynamic response of the singlelayer spherical reticulated shell with sub steel column under impact load, numerical models for singlelayer Kiewitt8 reticulated shell with sub steel column at span of 70 m and cubic impactors were established by ANSYS/ LSDYNA program and a series of numerical simulations were carried out. Four response modes for the reticulated shell under impact load were put forward according to dynamic response and plastic deformation. The characteristics of dynamic response of the structure with different response modes, such as impact force, speed of nodes, displacement of nodes, and stress of members were analyzed. The parametric analyses on the dynamic response of singlelayer spherical reticulated shell with sub steel column under impact load were carried out. By changing the impact location, column height and other factors, the effects of these parameters on the response mode of singlelayer spherical reticulated shell structures were investigated, and the distribution regularity of the structure response with different parameters was explained. The study results show that the type of impact force is mainly triangular load distribution under impact of the lateral force. When the load is applied on apex, some members of upper structure fail, then horizontal displacement of nodes and stress of members reach its maximum. If the impact height of steel column is lower, the peak value of impact force is smaller, but the maximum horizontal displacement of nodes and the maximum stress of members are still large.
Last Update: 2015-05-27