Wind Pressure Distribution and Wind-induced Dynamic Response for Spatial Groined Latticed Vaults  

作　　者：马骏 周岱 包艳 

机构地区：[1]Research Center of Spatial Structures,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong Univiversity

出　　处：《Journal of Shanghai Jiaotong university(Science)》2008年第4期391-399,共9页上海交通大学学报（英文版）

基　　金：the Key Project of Fund of Science and Technology Development of Shanghai (No. 07JC14023);the National Natural Science Foundation of China(No. 10572091)

摘　　要：The wind pressure distribution and wind-induced vibration responses of long-span spatial groined latticed vaults （SGLVs） were numerically simulated, which always are ones of the most important problems in the structural wind resistance design. Incompressible visco-fluid model was introduced, and the standard k - two equation model and semi-implicit method for pressure linked equation （SIMPLE） were used to describe the flow turbulence. Furthermore, the structural dynamic equation was set up, which is solved by Newmark-fl method. And several sort of wind-induced vibration coefficients such as the wind-induced vibration coefficient corresponding to the nodal displacement responses and wind loads were suggested. In the numerical simulation where the SGLV consisting of the cylindrical sectors with different curved surface was chosen as the example, the influence on the relative wind pressure distribution and structural wind-induced vibration responses of the closed or open SGLV caused by such parameters as the number of cylindrical sectors, structural curvature and the ratio of rise to span was investigated. Finally, some useful conclusions on the local wind pressure distribution on the structural surface and the wind-induced vibration coefficients of SGLV were developed.The wind pressure distribution and wind-induced vibration responses of long-span spatial groined latticed vaults (SGLVs) were numerically simulated, which always are ones of the most important problems in the structural wind resistance design. Incompressible visco-fluid model was introduced, and the standard k-ε two equation model and semi-implicit method for pressure linked equation (SIMPLE) were used to describe the flow turbulence. Furthermore, the structural dynamic equation was set up, which is solved by Newmark-β method. And several sort of wind-induced vibration coeffcients such as the wind-induced vibration coeffcient corresponding to the nodal displacement responses and wind loads were suggested. In the numerical simulation where the SGLV consisting of the cylindrical sectors with different curved surface was chosen as the example, the influence on the relative wind pressure distribution and structural wind-induced vibration responses of the closed or open SGLV caused by such parameters as the number of cylindrical sectors, structural curvature and the ratio of rise to span was investigated. Finally, some useful conclusions on the local wind pressure distribution on the structural surface and the wind-induced vibration coeffcients of SGLV were developed.

关 键 词：wind field wind pressure space groined latticed vault （SGLV） wind-induced vibration response 

分 类 号：TU356[建筑科学—结构工程]