- 摘 要
-
（1 江蘇海洋大學(xué)土木與港海工程學(xué)院， 連云港 222005；2 江蘇保利寧炫房地產(chǎn)開發(fā)有限公司， 南京 210000)
［摘要］角鋼的受力性能對預(yù)應(yīng)力自復(fù)位框架結(jié)構(gòu)的抗震性能有著重要的影響，對角鋼的受力性能進行了系統(tǒng)試驗研究，共完成10組角鋼的擬靜力試驗及2組角鋼的單調(diào)加載試驗。對試件的滯回曲線、骨架曲線、位移延性、耗能能力、殘余變形等抗震性能進行了分析。結(jié)果表明：各試件的滯回曲線較為飽滿，呈梭形；各試件的骨架曲線受角鋼厚度ta、角鋼長度la和螺栓位置lg等因素影響；試件的承載力隨著ta，la的變大以及l(fā)g的減小而提高；角鋼具有良好的耗能能力，試件的耗散能量大小隨著ta，la的變大以及l(fā)g的減小而提高。對角鋼的擬靜力試驗進行數(shù)值模擬，所得結(jié)果與試驗結(jié)果吻合良好。
［關(guān)鍵詞］角鋼； 抗震性能； 擬靜力試驗； 滯回曲線； 殘余變形； 剛度
中圖分類號：TU391文獻標識碼：A文章編號：1002-848X(2020)11-0080-05
Research on quasi-static test of angle steel tensile and compression restoring force model
CAI Xiaoning1, WU Jiangchuan1, GONG Nina1, ZHANG Feng1, GUO Jiangpei1, ZHOU Yuling2
（1 School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005， China；2 Jiangsu Baoli Ning Xuan Real Estate Development Co., Ltd., Nanjing 210000， China)
Abstract:The performance of angle steel has an important influence on the seismic performance of prestressed self-centering frame structure (PTED). The mechanical performance of the angle steel was systematically tested, and a total of 10 sets of angle steel quasi-static tests and 2 sets of angle steel monotonic loading tests were completed. Hysteresis curves, skeleton curves, displacement ductility, energy dissipation capacity and residual deformation were analyzed. The results show that the hysteresis curve of each specimen is full and fusiform. The skeleton curve of each specimen is affected by the thickness ta, the length la and the bolt position lg. The bearing capacity increases with the increase of the thickness ta and the length la and the decrease of the bolt position lg. Angle steel has a good energy-consuming ability. The energy dissipated increases with the increase of the thickness ta and the length la and the decrease of bolt position lg. The quasi-static tests were simulated numerically, and the results are in good agreement with the experimental results.
Keywords:angle steel; seismic performance; quasistatic test; hysteresis curve; residual deformation； stiffness
*國家自然科學(xué)基金資助（51508220,51878315），江蘇省高校自然科學(xué)基金資助（16KJB570001，17KJB570001），江蘇省建設(shè)系統(tǒng)科技項目(2017ZD098)。
作者簡介：蔡小寧，博士，副教授，Email：fenyun0801@163.com。
