隔震支座在鋼結(jié)構(gòu)施工過程中的變形與服役監(jiān)測
王可怡，陳大賓，郭曼麗，范雁
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（廣州大學(xué)土木工程學(xué)院，廣州 510006）［摘要］結(jié)合廣東科學(xué)中心E區(qū)巨型鋼框架結(jié)構(gòu)的整個施工進程，對隔震支座的施工變形進行了監(jiān)測，并對監(jiān)測數(shù)據(jù)進行處理與分析，得出了焊縫收縮變形是隔震支座產(chǎn)生變形的主要原因，而支座的后期豎向變形則隨著結(jié)構(gòu)自重的增加得到有效的控制并有所減小。在此基礎(chǔ)上，利用有限元分析軟件定性地分析了桿件的焊接收縮變形對隔震支座的水平變形影響。同時，為保證結(jié)構(gòu)的正常使用，對結(jié)構(gòu)正常運營狀態(tài)下的隔震支座實施了長達(dá)兩年的監(jiān)測，通過對采集數(shù)據(jù)的處理與分析得出隔震支座服役變形與環(huán)境溫度作用線性相關(guān)。［關(guān)鍵詞］隔震支座；施工變形；服役變形；焊縫收縮變形；環(huán)境溫度作用Study of isolation bearings’ construction deformation and service monitoring in E Area of GDSCWang Keyi, Cheng Dabin, Guo Manli, Fan Yan（School of Civil Engineering, Guangzhou University, Guangzhou 510006,China)Abstract:Combined with the whole construction process of the giant steel frame structures in E area of Guangdong Science Center, the deformation monitoring was applied for the isolation bearings construction. Through analyzing the data, some results were achieved that the welding deformation is the main cause to the construction deformation of the isolation bearing and with the structure self-weight increasing, the long term vertical deformation of the isolation bearing is effectively controlled even reduced. On that basis, using finite element analysis software, a qualitative analysis was accomplished about the influence of the welding contraction deformation on the bearings deformation.Additionally, to guarantee normal service conditions of the main structure, a long time monitoring for isolation bearing health is implemented. Through the analysis of the collected data, the relationship between the bearings’deformation and environment temperature action is linear correlation.Keywords:Guangdong Science Center; isolation bearings; construction; deformation; service deformation; weld contraction; environmental temperature action廣東省科技計劃項目(2004B10101048),(2005A11601014),(2006B37301009)；建設(shè)部科技計劃項目(2005K148),(2006K301),(2007K309)。作者簡介：王可怡,女，工程師，Email:wangke0387@sina.com。參考文獻(xiàn)［1］張季超, 李霆，李宏勝，等.新型大直徑隔震支座性能檢測試驗研究. ［J］. 建筑結(jié)構(gòu)， 2010，40(8).［2］李霆,李宏勝,孫兆民,等.大跨巨型鋼框架結(jié)構(gòu)隔震設(shè)計與分析 ［J］. 建筑結(jié)構(gòu)， 2010，40(8).［3］林東華,徐忠根.抗震支座在大跨度空間結(jié)構(gòu)中的應(yīng)用 ［J］.廣州大學(xué)學(xué)報：綜合版，2001,15(2):71-77.［4］陳大賓.廣東科學(xué)中心E區(qū)隔振技術(shù)應(yīng)用與研究 ［D］.廣州：廣州大學(xué)，2007.［5］張文錢.焊接傳熱學(xué) ［M］.北京:機械工業(yè)出版社,1989.［6］商廣泰,蔣鳳昌.鋼結(jié)構(gòu)焊接殘余應(yīng)力的ANSYS分析 ［J］.廣東建材,2005(2):54-55.
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