穿孔補(bǔ)強(qiáng)型鋼柱軸壓試驗(yàn)及有限元分析
駱志成1,2, 張海燕1,3, 吳波1,3, 余永輝2, 王維俊2
- 摘 要
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(1 華南理工大學(xué)土木工程系，廣州 510640；2 廣州市設(shè)計(jì)院，廣州 510620；3 華南理工大學(xué)亞熱帶建筑科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室，廣州 510640)［摘要］針對(duì)實(shí)際工程中型鋼構(gòu)件穿孔補(bǔ)強(qiáng)的常規(guī)做法可能造成現(xiàn)場(chǎng)焊接工作量大、鋼筋排布困難等問(wèn)題，提出補(bǔ)強(qiáng)板和型鋼板疊合穿孔，補(bǔ)強(qiáng)板以正面角焊縫或周邊角焊縫的形式與型鋼板連接補(bǔ)強(qiáng)的兩種做法。對(duì)兩組共4個(gè)采用建議做法補(bǔ)強(qiáng)的H型鋼穿孔補(bǔ)強(qiáng)柱進(jìn)行軸壓試驗(yàn)和有限元分析，并與相同尺寸的未穿孔柱、穿孔但不補(bǔ)強(qiáng)柱以及采用常規(guī)做法補(bǔ)強(qiáng)柱進(jìn)行了有限元比較分析。結(jié)果表明：采用兩種建議做法補(bǔ)強(qiáng)的柱承載力和延性相對(duì)于相同尺寸的未穿孔柱不降低；在彈性階段，補(bǔ)強(qiáng)板和型鋼故能有效地共同工作，但當(dāng)補(bǔ)強(qiáng)板僅采用正面角焊縫連接時(shí)，在構(gòu)件屈服后補(bǔ)強(qiáng)板可能出現(xiàn)外拱現(xiàn)象，且隨著補(bǔ)強(qiáng)板尺寸增大，外拱現(xiàn)象愈加明顯。綜合考慮穿孔補(bǔ)強(qiáng)方式的施工方便及補(bǔ)強(qiáng)效果，補(bǔ)強(qiáng)板和型鋼板疊合穿孔、補(bǔ)強(qiáng)板圍焊連接的補(bǔ)強(qiáng)方式具有較好的實(shí)用性。［關(guān)鍵詞］型鋼柱; 穿孔補(bǔ)強(qiáng); 正面焊接; 圍焊; 軸壓試驗(yàn); 有限元分析中圖分類(lèi)號(hào)：TU392.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)24-0063-05Axial compression tests and finite element analysis of perforated and strengthened shaped steel columnsLuo Zhicheng1,2, Zhang Haiyan1,3, Wu Bo1,3, Yu Yonghui2, Wang Weijun2(1 Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China; 2 Guangzhou Design Institute, Guangzhou 510620, China; 3 State Key Laboratory of Subtropical Architecture Science, South China University of Technology, Guangzhou 510640, China）Abstract: The common method in engineering practice for perforated and strengthened shaped steel components may bring heavy welding works and the difficulty of rebar allocation. To deal with these problems, two methods of perforated and strengthened were proposed. The reinforcement plates were overlapped and perforated with shaped steel plates together and then connected by front fillet weld or weld all around with the shaped steel component. Axial compression tests and finite element analysis were carried out on four H-section steel columns which were perforated and strengthened by the above two methods. The results were compared with that of the non-perforated columns, perforated but non-strengthened columns and perforated strengthened columns by common method. The final results show that load bearing capacity and ductility of the columns perforated and strengthened by two proposed methods are not lower than that of non-perforated columns of the same size. The reinforcement plates and shaped steel column can effectively work together when the column is in elastic behavior. However, buckling of the reinforcement plate occurs after the yield of reinforcement plate if it is only connected by front fillet weld to the steel columns, and buckling develops more greatly with the increase of reinforcement plate dimensions. Considering the construction convenience and strengthening effects, the method of strengthening plates perforated with the shaped steel together and welded all around for connection is more applicable to engineering practice.Keywords: shaped steel column; perforated and strengthened; front fillet weld; weld all around; axial compression test; finite element analysis作者簡(jiǎn)介：駱志成，碩士，Email：565134641@qq.com。參考文獻(xiàn)［1］金星. 中央電視臺(tái)電視文化中心工程型鋼混凝土結(jié)構(gòu) ［J］. 施工技術(shù), 2008, 37(4): 100-101.［2］牛志平.型鋼混凝土組合結(jié)構(gòu)梁柱節(jié)點(diǎn)深化設(shè)計(jì)研究 ［J］. 建筑技術(shù), 2010, 41(2): 150-152.［3］梁書(shū)亭, 張根俞, 殷杰. 型鋼混凝土柱翼緣穿孔缺損率限值及補(bǔ)強(qiáng)分析［J］. 鋼結(jié)構(gòu), 2009, 24(6):18-21.［4］CHENG BIN, ZHAO JINCHENG. Strengthening of perforated plates under uniaxial compression: Buckling analysis ［J］. Thin-Walled Structures, 2010, 48(12): 905-914.［5］BRANDO GIUSEPPE, MATTEIS GIANFRANCO DE. Buckling resistance of perforated steel angle members ［J］. Journal of Constructional Steel Research, 2013（81）: 52-61.［6］CRISAN ANDREI, UNGUREANU VIOREL, DUBINA DAN. Behaviour of cold-formed steel perforated sections in compression：Part 1—Experimental investigations ［J］. Thin-Walled Structures, 2012,61: 86-96.［7］04G523型鋼混凝土組合結(jié)構(gòu)構(gòu)造 ［S］. 北京：中國(guó)電子工程設(shè)計(jì)院， 2004.［8］何東,余永輝,王偉明,等. 廣州琶洲PZB1401地塊項(xiàng)目轉(zhuǎn)換層節(jié)點(diǎn)設(shè)計(jì) ［J］. 建筑結(jié)構(gòu), 2012, 42(6): 53-56.［9］ZHANG HAIYAN, DUAN JING, YU MIN. Test of perforated and reinforced steel skeleton joints under low-cycle load ［C］//Advanced Materials Research, Advances in Civil Engineering. CEBM 2011（255-260）: 294-298.
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