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(1 廣東省二沙體育訓(xùn)練中心, 廣州 510105; 2 廣東大宸建筑設(shè)計有限公司, 廣州 510627;3 廣東工業(yè)大學(xué)土木與交通工程學(xué)院, 廣州 510006; 4 東莞市建筑科學(xué)研究院有限公司,東莞 523809; 5 東莞市東城街道住房和城鄉(xiāng)建設(shè)局, 東莞 523129)
摘要: 對于須進行加固的大噸位混凝土柱,當(dāng)該多層框架結(jié)構(gòu)僅下部框架柱局部混凝土強度明顯低于設(shè)計要求時,采用外貼型鋼-混凝土置換組合加固技術(shù),可以避免上部質(zhì)量合格的結(jié)構(gòu)拆除重建,從而減小對工程的不利影響,同時可以降低加固成本以及縮短工期. 該技術(shù)通過外包型鋼將上部荷載傳遞至下部結(jié)構(gòu),鋼板中預(yù)留空間,通過制定合適的置換施工順序?qū)⑷毕莼炷吝M行置換,嚴(yán)格控制施工階段的混凝土柱內(nèi)部應(yīng)力,取得了良好的加固效果. 結(jié)合某加固工程實例,介紹了此組合加固方法的施工流程,并且對施工過程進行了 ABAQUS 有限元模擬分析,證明了此技術(shù)的安全可靠性,供類似混凝土結(jié)構(gòu)加固改造設(shè)計和施工參考.
關(guān)鍵詞: 混凝土柱; 外粘型鋼; 混凝土置換; 組合加固; 有限元模擬
中圖分類號:TU375. 3 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2023)02-0135-07
DOI:10. 19701 / j. jzjg. LS210350
Research and application of reinforcement technology for large tonnage concrete column
CHEN Xianghong1, LIANG Dong2, WU Jiechun3, MAI Zhendong4, WANG Yelu2,ZHANG Baxiu2, ZENG Shusen2, TAN Zhaoquan5
(1 Ersha Sports Training Center of Guangdong Province, Guangzhou 510105, China; 2 Guangdong Dachen ArchitecturalDesign Co. , Ltd. , Guangzhou 510627, China; 3 School of Civil and Traffic Engineering, Guangdong University ofTechnology, Guangzhou 510006, China; 4 Dongguan Institute of Building Research Co. , Ltd. , Donguan 523809,China; 5 Dongguan Dongcheng Subdistrict Housing and Urban-Rural Development Bureau, Donguan 523129, China)
Abstract:For large tonnage concrete column which shall be reinforced, when only local strength of concrete frame columnof the lower part of the multilayer frame structure significantly lower than the design requirements, the combinedreinforcement technology of sticking steel-concrete displacement can avoid the demolition and reconstruction of the upperstructure with qualified quality, so as to reduce the adverse impact on the project, and reduce the reinforcement cost andshorten the construction period. In this technology, the upper load is transferred to the substructure through the outersection steel, the space in the steel plate is reserved, and the defective concrete is replaced by the proper replacementconstruction sequence. The internal stress of the concrete column in the construction stage is strictly controlled, and goodreinforcement effect is achieved. Combined with a reinforcement engineering example, the construction process of thismethod was introduced, and the ABAQUS finite element simulation analysis of the construction process was carried out,which proves the safety and reliability of this technology, and can be used as a reference for the reinforcement design andconstruction of similar concrete structures.
Keywords: concrete column; sticking steel; concrete displacement; combined reinforcement; finite element simulation
第一作者:陳向紅,碩士,高級工程師,主要從事結(jié)構(gòu)設(shè)計工作,Email: 9581000@ qq. com.
[引用本文] 陳向紅,梁冬,吳杰春,等. 大噸位混凝土柱加固技術(shù)研究及應(yīng)用[ J]. 建筑結(jié)構(gòu),2023,53(2):135-141. CHEN Xianghong,LIANG Dong,WU Jiechun,et al. Research and application of reinforcement technology for largetonnage concrete column[J]. Building Structure,2023,53(2):135-141.
