- 摘 要
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(華信咨詢設計研究院有限公司， 杭州 310014)
［摘要］根據(jù)三個水準抗震設防目標研究大型顯示屏支撐結構的抗震特性，提出相應水準目標下的設計原則。采用SAP2000軟件分析三個水準目標下支撐結構的變形及應力特性，研究支撐結構單體計算時與考慮主體結構影響進行整體計算時的差別。結合“強節(jié)點弱構件”的失效機制采用ANSYS軟件進行節(jié)點深化分析。結果表明，支撐結構平面變形受主體結構的影響較大，計算時應考慮主體結構的影響，支撐結構的豎向變形采用底層支撐節(jié)點變形控制，其豎向布置應避開主體結構薄弱層，支撐節(jié)點構件可通過在內部設置十字形加勁肋提高承載力。
［關鍵詞］電子顯示屏; 支撐結構; 有限元分析; 節(jié)點; 十字加勁肋
中圖分類號：TU391 文獻標識碼：A 文章編號：1002-848X(2014)17-0024-06
Seismic performance analysis and joint behaviour research of the supporting structure of large screen
Yao Yunlong, Zhang Yuejun
(Huaxin Consulting and Designing Institute Co., Ltd., Hangzhou 310014, China)
Abstract:According to the three earthquake performance objectives, the seismic performance of the supporting structure of large screen was analyzed, and the seismic design principles for corresponding objectives were proposed. Using the finite element analysis program SAP2000, the deformation and stress characteristics of the supporting structure were analyzed, and the differences between separate calculation model and global calculation model taking into account the main structure influence were studied. The joint failure mechanism based on the general design rule of “strong joint, weak member” was investigated deeply by ANSYS. The simulation results show that the main structure has great influence on the plane deformation of the supporting structure and the influence of the main structure on the calculation of the supporting structure should be considered. The vertical deformation of the supporting structure was controlled by the deformation of the underlying supporting joint, and the vertical layout of the supporting structure should avoid weak position of the main structure. The bearing capacity of the supporting joint could be improved by the internal cross stiffener.
Keywords: electronic screen; supporting structure; finite element analysis; joint; cross stiffener
作者簡介：姚云龍，碩士，工程師，一級注冊結構工程師，注冊土木工程師（巖土），一級注冊建造師，注冊咨詢工程師，Email：yaoyl@hxdi.com。
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