884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(北京工業(yè)大學(xué)建筑工程學(xué)院， 北京 100124)

［摘要］以某600MW級(jí)火力發(fā)電廠主廠房為背景，通過試驗(yàn)和有限元分析研究了鋼支撐-鋼筋混凝土框排架的抗震性能，同時(shí)研究了混凝土柱構(gòu)造設(shè)計(jì)的改進(jìn)對(duì)結(jié)構(gòu)抗震性能的影響。以某鋼支撐較少的橫向框排架為研究單元，以1∶10比例設(shè)計(jì)縮尺模型，通過擬靜力低周反復(fù)加載試驗(yàn)，觀察結(jié)構(gòu)試驗(yàn)現(xiàn)象、破壞機(jī)制，并繪制滯回曲線、骨架曲線、剛度退化曲線等。試驗(yàn)結(jié)果表明：結(jié)構(gòu)滯回曲線呈飽滿梭形，結(jié)構(gòu)具有良好的抗震性能，結(jié)構(gòu)的耗能能力、阻尼比與延性較高。鋼支撐受壓彎可屈服，存在P-Δ效應(yīng)，在結(jié)構(gòu)由第一道抗震防線轉(zhuǎn)入第二道抗震防線過程中提供了抗側(cè)剛度和抗剪承載力，并具有耗能能力。使用ABAQUS有限元軟件建立了實(shí)體模型，模擬了結(jié)構(gòu)模型的滯回曲線、骨架曲線以及混凝土損傷狀態(tài)，與試驗(yàn)結(jié)果吻合良好。 

［關(guān)鍵詞］鋼支撐；鋼筋混凝土框排架；擬靜力試驗(yàn)；抗震性能；滯回曲線；骨架曲線 

中圖分類號(hào)：TU375-4 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)16-0042-09

Seismic performance experiment and finite element analysis of steel brace-concrete frame bent structure 

WANG  Fumin,  GAO  Xiangyu,  HUANG  Jin,  ZENG  Zhenjie 

(College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124，China) 

Abstract: Taking the main building of a 600MW thermal power plant as the background, the seismic performance of steel brace-concrete frame bent was studied by experiment and finite element analysis, and the effect of improving the structural design of concrete column on the seismic performance was studied. A transverse frame bent with less steel brace was selected as the research unit. The scale model was designed with 1∶10 ratio. Through the pseudo-static repeated loading test, the phenomenon and failure mechanism of the structure test were observed, and the structure hysteretic curve, skeleton curve and stiffness degradation curve were drawn. The test results show that the hysteretic curve of the structure is full shuttle shape and has good seismic performance. The energy dissipation capacity, damping ratio and ductility of the structure are high. The steel brace can yield under compression and has P-Δ effect. In the process of the structure from the first line of defense to the second line of defense, it provides lateral stiffness and shear capacity, and has energy dissipation capacity. Using ABAQUS finite element software, the solid model was established, and the hysteretic curve, skeleton curve and concrete damage state of the structure model were simulated, which are in good agreement with the test results.  

Keywords:steel brace； reinforced concrete frame bent； pseudo-static test； seismic performance； hysteresis curve； skeleton curve

*北京市自然科學(xué)基金重點(diǎn)項(xiàng)目（8141001）。

 作者簡(jiǎn)介：王富民，碩士研究生，Email:wangfumin78685@126.com； 通信作者：高向宇，博士，教授，Email: gaoxy@bjut.edu.cn。