Optimal Analysis of Large Span Double-Layer Barrel Vaults

1999 ◽  
pp. 1099-1106
Author(s):  
L SHAN ◽  
H YAN
Keyword(s):  
Double Layer ◽  
Large Span ◽  
Optimal Analysis ◽  
Barrel Vaults

Comparison of four meta-heuristic algorithms for optimal design of double-layer barrel vaults

2018 ◽  
Vol 33 (3-4) ◽  
pp. 115-123
Author(s):  
Ali Kaveh ◽  
Majid Ilchi Ghazaan ◽  
Soroush Mahjoubi
Keyword(s):  
Optimal Design ◽  
Double Layer ◽  
Heuristic Algorithms ◽  
Size Optimization ◽  
Community Centers ◽  
Cross Sectional ◽  
Long Span ◽  
Design Variables ◽  
Rail Station ◽  
Barrel Vaults

Barrel vaults are effective semi-cylindrical forms of roof systems that are widespread for multipurpose facilities including warehouse, rail station, pools, sports center, airplane hungers, and community centers because of providing long-span and economical roof with significant amount of space underneath. In the present study, size optimization of double-layer barrel vaults with different configurations is studied. Four recently developed algorithms consisting of the CBO, ECBO, VPS, and MDVC-UVPS are employed and their performances are compared. The structures are subjected to stress, stability, and displacement limitations according to the provisions of AISC-ASD. The design variables are the cross-sectional areas of the bar elements which are selected from steel pipe sections. The numerical results indicate that the MDVC-UVPS outperforms the other algorithms in finding optimal design in all examples.

Optimal design of double layer barrel vaults considering nonlinear behavior

2016 ◽  
Vol 58 (6) ◽  
pp. 1109-1126 ◽  
Author(s):  
Saeed Gholizadeh ◽  
Changiz Gheyratmand ◽  
Hamed Davoudi
Keyword(s):  
Optimal Design ◽  
Double Layer ◽  
Nonlinear Behavior ◽  
Barrel Vaults

Dynamic Instability of Spatial Structures under Typical Wind Flow

2011 ◽  
Vol 295-297 ◽  
pp. 1738-1741
Author(s):  
You Qin Huang ◽  
Ji Yang Fu
Keyword(s):  
Wind Speed ◽  
Wind Tunnel ◽  
Double Layer ◽  
Dynamic Instability ◽  
Wind Flow ◽  
Spatial Structures ◽  
High Wind ◽  
High Wind Speed ◽  
Large Span ◽  
Wind Flows

The mechanism of dynamic instability of large span spatial structures under high wind speed should be studied carefully, but it has seldom been done before. In this paper, a double-layer cylindrical reticulated shell under a typical wind flow is taken as an example to study the dynamic instability of large span spatial structures under wind flows. The interaction of the shell and the flow is ignored and unsteady wind forces on the shell are obtained from wind tunnel tests. The dynamic instability status of the shell is determined by the Budiansky-Roth criterion. The results show that the double-layer cylindrical reticulated shell will become dynamically instable under high wind speed.

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