某大型混凝土屋架現(xiàn)有承載力的一種判定方法
劉禮華1，楊斌1,2，陳尚建1，鄧禮1，魏曉斌1
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劉禮華1，楊斌1,2，陳尚建1，鄧禮1，魏曉斌1（1 武漢大學(xué)土木建筑工程學(xué)院，武漢430072；2 湖北水利水電職業(yè)技術(shù)學(xué)院，武漢 430070）[摘要] 以某中央生活區(qū)會所屋架結(jié)構(gòu)為工程背景，以屋架結(jié)構(gòu)剛度方程及其所確定的位移、內(nèi)力、荷載和剛度之間的對應(yīng)增量關(guān)系為依據(jù)，在現(xiàn)場試驗的基礎(chǔ)上結(jié)合有限元計算分析，介紹了對大型混凝土屋架現(xiàn)有承載力進(jìn)行判定的方法。并根據(jù)計算分析和靜載試驗的結(jié)果進(jìn)行了屋架的結(jié)構(gòu)安全性評價。從結(jié)構(gòu)使用的角度，提出了屋架結(jié)構(gòu)安全性評價意見。所采用的判定方法簡便科學(xué)，對在役屋架的檢測評價具有較好的實用推廣價值。[關(guān)鍵詞] 剛度方程；靜載試驗；屋架；現(xiàn)有承載力中圖分類號：TU311-1，TU791 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2012)12-0105-03A judgmental method for existing bearing capacity of a long span concrete roof trussLiu Lihua1, Yang Bin1,2, Chen Shangjian1, Deng Li1, Wei Xiaobin1（1 School of Civil & Architectural Engineering, Wuhan University, Wuhan 430072, China; 2 Hubei Water Resources Technical College, Wuhan 430070, China）Abstract: Based on the concrete roof truss of a club, according to the stiffness equation of the roof truss and the corresponding increment relations between displacement, internal force, load and stiffness determined by the stiffness equation, through field test combining with finite element analysis, a judgmental method for existing bearing capacity of the long span concrete roof truss structure was introduced. And based on the results of computational analysis and static test, the safety evaluation of roof truss was given. Some suggestions of safety evaluation were given.This method is convenient and scientific, and is valuable to spread.Keywords: stiffness equation; static load test; roof truss; existing bearing capacity作者簡介：劉禮華，博士,教授，博士生導(dǎo)師，Email：whllh@163.com參考文獻(xiàn)［1］袁慶華.建筑結(jié)構(gòu)檢測鑒定方法探討［J］.建筑科學(xué)，2002,18（4）：32-35.［2］雙凱偉.鋼結(jié)構(gòu)屋架靜力有限元分析［J］.山西建筑,2009,35（32）:60-62.［3］曾又林. 計算結(jié)構(gòu)力學(xué)［M］. 武漢：武漢大學(xué)出版社，2002.
