點(diǎn)支式幕墻索桁架支承結(jié)構(gòu)安全性檢測方法
左勇志1，魯巧稚2，劉育民1，霍達(dá)2，鄭敬杰1
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左勇志1，魯巧稚2，劉育民1，霍達(dá)2，鄭敬杰1（1 北京市建筑工程研究院，北京 100039； 2 北京工業(yè)大學(xué)建筑工程學(xué)院，北京 100124）［摘要］點(diǎn)支式幕墻的檢測方法的缺乏使得點(diǎn)支式幕墻的安全性鑒定工作成為一個難題。預(yù)應(yīng)力索桁架體系是點(diǎn)支式玻璃幕墻支承結(jié)構(gòu)的典型形式。對玻璃幕墻各種損傷因素進(jìn)行了總結(jié)，包括連接件失效、聯(lián)系桿損壞、拉索預(yù)應(yīng)力損失、節(jié)點(diǎn)坐標(biāo)偏差和錨固端損傷，并在此基礎(chǔ)上提出一種對幕墻索桁架支承體系安全性進(jìn)行檢測的方法。以某幕墻工程為例，從各種損傷因素的角度對幕墻工程的現(xiàn)狀進(jìn)行了檢測，建立有限元計算模型進(jìn)行承載能力分析并對幕墻安全性做出評估，驗證了該方法的可行性。［關(guān)鍵詞］點(diǎn)支式幕墻；索桁架；檢測；有限元分析中圖分類號：TU351，TU394 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2013)02-0045-03Safety detection of cable truss support system in point-supporting curtain wallsZuo Yongzhi1, Lu Qiaozhi2, Liu Yumin1, Huo Da2, Zheng Jingjie1(1 Beijing Building Construction Research Institute, Beijing 100039, China; 2 College of Architecture and Civil Engineering, Beijing University of , Beijing 100124, China)Abstract: The shortage of detection method for point-supporting curtain walls makes the evaluation of the safety of these curtain walls very difficult. Prestressed cable truss system is a typical supporting form in point-supporting curtain walls. Damage factors to glass curtain walls were summarized, including connector failure, compression bar damage, cable prestress loss, offset of node coordinate and cable anchorage failure. On the basis of these factors, a safety detection method of cable truss system for curtain walls was proposed. Taking one curtain wall project as an example, the present situation of the curtain wall was detected according to various damage factors, a finite element model was founded to analyze its bearing capacity and the safety of the curtain wall was also evaluated, which verified the feasibility of the method.Keywords: point-supporting curtain wall; cable truss; detection; finite element analysis參考文獻(xiàn)［1］ 張其林.玻璃幕墻結(jié)構(gòu)［M］.濟(jì)南：山東科學(xué)技術(shù)出版社，2006：225.［2］ JGJ 102—2003玻璃幕墻工程技術(shù)規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2003.［3］ 劉軍進(jìn),呂志濤.預(yù)應(yīng)力索桁架在玻璃幕墻支承體系中的應(yīng)用［J］.建筑結(jié)構(gòu)，2001，31（6）：59-62.［4］ 王德勤.索結(jié)構(gòu)玻璃幕墻用鋼索桁架的構(gòu)造與設(shè)計［J］.建筑技術(shù)，2003，34(9):670-671.［5］ 劉軍進(jìn)，陳新杰，孫永新. 點(diǎn)式玻璃幕墻預(yù)應(yīng)力索桁架結(jié)構(gòu)設(shè)計的幾個概念［J］.工業(yè)建筑，2002，32(7):59-61.［6］ 鄭敬杰.損傷因素對單層平面索網(wǎng)玻璃幕墻結(jié)構(gòu)性能的影響研究［D］. 北京：北京工業(yè)大學(xué)， 2009.
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