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

（合肥工業(yè)大學(xué)土木與水利工程學(xué)院，合肥 230009）

［摘要］以國(guó)家金融信息大廈超高層建筑為工程背景，其建筑轉(zhuǎn)換層設(shè)在270.6m處，采用3個(gè)尺度對(duì)轉(zhuǎn)換層核心筒部位的型鋼混凝土轉(zhuǎn)換節(jié)點(diǎn)在強(qiáng)地震工況下的節(jié)點(diǎn)應(yīng)力狀態(tài)進(jìn)行分析。先對(duì)大廈整體結(jié)構(gòu)在地震作用下進(jìn)行力學(xué)分析，根據(jù)整體結(jié)構(gòu)的地震響應(yīng)力學(xué)分析結(jié)果，建立轉(zhuǎn)換層結(jié)構(gòu)力學(xué)模型，施加相應(yīng)的位移和應(yīng)力邊界條件。再將型鋼混凝土轉(zhuǎn)換節(jié)點(diǎn)模型從轉(zhuǎn)換層力學(xué)模型中隔離，采用有限元法對(duì)型鋼混凝土轉(zhuǎn)換節(jié)點(diǎn)進(jìn)行應(yīng)力強(qiáng)度分析，通過3個(gè)尺度模型的力學(xué)分析結(jié)果對(duì)比可知，所建立的轉(zhuǎn)換節(jié)點(diǎn)力學(xué)模型及有限元計(jì)算結(jié)果是可靠的，根據(jù)計(jì)算結(jié)果對(duì)節(jié)點(diǎn)局部高度應(yīng)力集中區(qū)域提出了加固建議，經(jīng)加固后的力學(xué)分析可知，轉(zhuǎn)換節(jié)點(diǎn)的應(yīng)力水平滿足設(shè)計(jì)要求，從而為該類型的節(jié)點(diǎn)設(shè)計(jì)及力學(xué)分析方法提供參考。

［關(guān)鍵詞］超高層建筑；高位轉(zhuǎn)換層；型鋼混凝土；轉(zhuǎn)換節(jié)點(diǎn)；應(yīng)力強(qiáng)度分析；加固

中圖分類號(hào)：TU973-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)24-0061-08

Strength analysis and reinforcement of steel reinforced concrete transition joints of high-level transition floors in super high-rise building

LI Zhaofeng, NIU Zhongrong, WU Jian′an

（College of Civil Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract:Taking the super high-rise building of the National Financial Information Building as the engineering background, the building transition floor is set at 270.6m. The strategy of three scales for the core tube of the transition floor was used to analyze the working stress states of the steel reinforced concrete (SRC) transition floor joints subjected to strong earthquake conditions. Firstly, the mechanical analysis of the overall structure  under earthquake action was carried out. According to the results of the seismic response mechanics analysis of the overall structure, the mechanical model of the transition floor structure was established, and the corresponding displacement and stress boundary conditions were applied. Then SRC transition joints model was isolated from the mechanical model of the transition floor, and the finite element method was used to analyze the stress intensity of SRC transition joints. Through the comparison of the mechanical analysis results of the three scale models, it can be seen that the established mechanical model of the transition node and the finite element calculation results are reliable. According to the calculation results, reinforcement suggestions are proposed for the local high stress concentration area of the node. The mechanical analysis after reinforcement shows that the stress level of the transition node meets the design requirements, so as to provide reference for this type of joint design and mechanical analysis method.

Keywords:super high-rise building; high-level transition floor; steel reinforced concrete; transition joint; stress intensity analysis; reinforcement

*國(guó)家自然科學(xué)基金項(xiàng)目（11272111）。

作者簡(jiǎn)介：李兆峰，博士研究生，Email: lzhaofeng88@163.com。