Translated Title
Influence of a Stiffening Cable Net on Performance of Large-Span Air-Supported Membrane Structures
Translated Abstract
The air-supported membrane has such properties as lightness,flexibility,and strong geometric nonlinear-ity,which will be significantly affected by arrangements of stiffening cable nets.However,large-span air-supported membranes have seldom been reported.Meanwhile,the existing ＂CECS 158—2015 Technical Specifica-tion for Membrane Structure＂ does not specify the wind vibration coefficient of the air-supported membrane.Two large-span air-supported membrane models,with and without stiffening cable nets,were established to analyze their differences in stress and displacement under internal pressure and gravity.Taking 0° wind angle as example,the wind pressure coefficient was obtained by using CFD technology and applied to two types of air-supported membrane models for comparison.The Full method was used to analyze time-history response of wind-induced vibration and the wind vibration coefficients were calculated.The results show that cable nets have minor influence on find-forming analysis.Meanwhile,under internal pressure and gravity,the variation trend of the displacement of air-supported membrane structure is similar with that of the stress of membrane with or without cable nets.However, under the static wind load,the maximum displacement of air-supported membrane structure with cable nets decreased 57.3% relatively,and the maximum stress of membrane decreased 25% relatively.The depression displacement on the windward side of air-supported membrane structure with cable nets decreased obviously.However,the cable nets have little influence on the wind vibration coefficient of air-supported membrane structure,and the wind vibra- tion coefficient of this air-supported membrane structure is suggested to be 1.3.
Translated Keyword
finite element simulation
CFD numerical simula-tion
wind vibration coefficient
air-supported membrane
stiffening cable net
Access Number
WF:perioarticaltianjdxxb2019z2008
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