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(1 西安建筑科技大學(xué)土木工程學(xué)院，西安 710055； 2 西安理工大學(xué)水利水電學(xué)院，西安 710048；3 中聯(lián)西北工程設(shè)計(jì)研究院，西安 710082)
［摘要］提出一種新型剪切型耗能梁段與柱連接節(jié)點(diǎn)——改進(jìn)加蓋板方案，在滿足梁端抗彎、抗剪承載力的同時(shí)，放松對(duì)耗能梁段的約束，使其充分發(fā)展剪切塑性變形，耗散更多的地震能量。采用1∶3縮尺模型，將該新型方案用于D型偏心支撐結(jié)構(gòu)中，與傳統(tǒng)的D型偏心支撐結(jié)構(gòu)進(jìn)行了對(duì)比試驗(yàn)，結(jié)果表明，采用改進(jìn)加蓋板方案的單斜桿偏心支撐結(jié)構(gòu)具有很好的抗側(cè)移剛度和變形能力，并具有足夠的抗側(cè)移能力；可以將耗能梁段從柱邊移開(kāi)，從而允許耗能梁段有較大轉(zhuǎn)動(dòng)，耗散更多的地震能量。同時(shí)也給出了改進(jìn)加蓋板方案的設(shè)計(jì)方法。
［關(guān)鍵詞］D型偏心支撐； 耗能梁段； 蓋板
Experimental study on seismic behavior of adding cover-plate protocol for D-type eccentrically braced steel frames
Pan Xiuzhen1,2, Hao Jiping1, Wang Defa2, Gao Jie3(1 School of Civil Engineering, Xian University of Architecture & Technology, Xi’an 710055,China；2 Institute of Water Resources and Hydraulic Power, Xi’an University of Technology, Xi’an 710048,China；3 China United Northwest Institute for Engineering Design & Research, Xi’an 710082,China)
Abstract:A new connection protocol, adding cover-plate between shear links and column,is suggested. It was used to enhance moment and shear carrying capacity of beam,to relax the restriction and assure the sufficiency development of plastic deformation of the link, and dissipate more earthquake energy. Considering the scale ratio of 1:3, the experimental data of new protocol and conventional connection were achieved by two specimens under cyclic loading. Results indicate that the new type of eccentrically braced steel frame have enough stiffness and deformation capacity, draw link beam away from flange of column, and dissipate more earthquake energy. Meanwhile, some design and amended measures were recommended for the new type protocol.
Keywords:D-type eccentrically braced； link beams； cover-plate
*陜西省教育廳專項(xiàng)科研計(jì)劃項(xiàng)目(06JK255)；西安建筑科技大學(xué)重大科技項(xiàng)目創(chuàng)新資金項(xiàng)目(ZX0510)。
作者簡(jiǎn)介：潘秀珍，博士，工程師，Email:panxiuzheng@163.com。
參考文獻(xiàn)
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