- 摘 要
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(1 中國建筑科學(xué)研究院，北京 100013； 2 北京工業(yè)大學(xué)，北京 100022)
［摘要］當(dāng)設(shè)計的結(jié)構(gòu)構(gòu)件截面高度過大不能滿足建筑使用要求必須減小梁截面時，就需要對結(jié)構(gòu)構(gòu)件進(jìn)行改造加固。針對要改造的梁截面減小較多，而且承受較大荷載的特點，采用組合梁的方法加固，用型鋼梁來分擔(dān)由于原混凝土梁截面減小所需增加的配筋和剛度。組合梁容易使被改造的梁滿足建筑使用功能的要求，同時大大降低了支撐卸荷所需的費用，也使施工過程更安全可控。該加固方法較好地解決了重荷載梁改造加固的需求，可為類似工程的加固改造提供參考。
［關(guān)鍵詞］加固改造; 重荷載; 大截面梁; 組合梁; 構(gòu)造措施
中圖分類號：TU398+.7 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)03-0063-04
Application of composite beam in reinforcement projects
Rong Weisheng1, Hui Yuerong1, Zhang Jie2, Li Yongjie1
(1 China Academy of Building Research, Beijing 100013, China; 2 Beijing University of Technology, Beijing 100022, China)
Abstract: When the height of the component section is too large to fulfill the requirements of architecture, structural components need to be reinforced and reconstructed. According to the characteristics that the beam section needed to be reduce a lot and bears great loads, the composite beam reinforcement method was used, in which steel beams were used to share the increased reinforcement and stiffness due to reduction of section. Composite beam is easy to meet the functional requirements of building use and greatly reduce costs for unloading support. At the same time, construction process is more safe and controllable with the use of the method. The reinforcement method solves the problem of reinforcement requirements of beams under heavy loads, and provide reference for reinforcement and reconstruction of similar projects.
Keywords: reinforcement and reconstruction; heavy load; large section beam; composite beam; structural measure
作者簡介：榮維生，博士，高級工程師，Email：rongweisheng@sina.com。
參考文獻(xiàn)
［1］GB 50367—2006 混凝土結(jié)構(gòu)加固技術(shù)規(guī)范［S］．北京：中國建筑工業(yè)出版社，2006.
［2］YB 9082—2006 鋼骨混凝土結(jié)構(gòu)設(shè)計規(guī)程［S］．北京：冶金工業(yè)出版社，2007.
