預(yù)防及處理大跨度混凝土梁、板撓度過大的方法
安來
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安來(中國建筑設(shè)計(jì)研究院, 北京 100044)[摘要]對(duì)結(jié)構(gòu)工程中普遍存在的大跨度混凝土梁、板撓度過大的質(zhì)量通病進(jìn)行了分析,提出在結(jié)構(gòu)施工圖設(shè)計(jì)中有效控制大跨度梁、板撓度的方法。 通過工程實(shí)例,對(duì)已經(jīng)出現(xiàn)過大撓度的混凝土梁、板提出合理的處理方法,供結(jié)構(gòu)設(shè)計(jì)人員參考。[關(guān)鍵詞]施工缺陷; 起拱; 混凝土徐變; 受彎構(gòu)件; 抗彎剛度; 撓度驗(yàn)算; 剛度退化中圖分類號(hào):TU375 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1002-848X(2013)18-0078-04Prevention and handling methods of super deflected concrete beams and slabsAn Lai(China Architecture Design & Research Group, Beijing 100044, China)Abstract: Super deflections in large span concrete beam or slab widely exist in the structural engineering, which is a common quality problem. Methods to control the deflection of large span beams and slabs effectively in structural construction documents design were proposed. Through real project cases, rational methods to solve the existing super deflections in concrete beams or slabs were put forward for references.Keywords: construction deficiency; camber; concrete creep; flexural member; bending rigidity; deflection design; stiffness degradation作者簡介:安來,學(xué)士,教授級(jí)高級(jí)工程師,Email:SDBYANLAI@163.com。參考文獻(xiàn)[1]GB 50010—2010混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范[S].北京:中國建筑工業(yè)出版社, 2011.[2]建質(zhì)[2008]216號(hào)建筑工程設(shè)計(jì)文件編制深度規(guī)定 [S].2008年版. 北京:中國計(jì)劃出版社,2008.[3]GB 50204—2002混凝土結(jié)構(gòu)工程施工質(zhì)量驗(yàn)收規(guī)范 [S]. 2011年版. 北京:中國建筑工業(yè)出版社, 2011.[4]全國民用建筑工程設(shè)計(jì)技術(shù)措施 結(jié)構(gòu)[S].北京:中國計(jì)劃出版社, 2003.[5]鄒金林.建筑物樓面裂縫與變形荷載作用分析[J].建筑結(jié)構(gòu),2003,33(2):29-31.
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