【摘要】：筒體結(jié)構(gòu)作為一種特殊的結(jié)構(gòu)形式,具有結(jié)構(gòu)抗側(cè)剛度大,受力合理,使用空間靈活等特點(diǎn),特別適合超高層建筑結(jié)構(gòu)。而框架核心筒結(jié)構(gòu)因其同時(shí)具有框架和剪力墻的優(yōu)點(diǎn),在辦公類建筑中使用頗為普遍。本文以某超限框架-核心筒結(jié)構(gòu)為例,采用PKPM結(jié)構(gòu)軟件建模和結(jié)構(gòu)分析,從以下幾個(gè)方面對(duì)整體結(jié)構(gòu)以及結(jié)構(gòu)中的外框柱進(jìn)行研究和探討:1.對(duì)整體結(jié)構(gòu)采用了satwe程序進(jìn)行了多遇地震下的彈性計(jì)算分析。分析結(jié)果表明:各項(xiàng)計(jì)算指標(biāo)均滿足規(guī)范要求,結(jié)構(gòu)布置合理,能夠達(dá)到“小震不壞”的抗震設(shè)防目標(biāo);2.在對(duì)結(jié)構(gòu)整體分析的基礎(chǔ)上,對(duì)結(jié)構(gòu)二道防線剪力分擔(dān)比進(jìn)行了分析。分析結(jié)果表明:在多遇地震作用下,結(jié)構(gòu)以核心筒剪力墻為主要抗側(cè)力體系,外框架剪力分擔(dān)比也滿足規(guī)范要求,能夠保證外框柱發(fā)揮第二道防線的作用;3.針對(duì)結(jié)構(gòu)中的外框柱進(jìn)行了設(shè)防烈度下的抗震性能設(shè)計(jì),設(shè)計(jì)結(jié)果能夠達(dá)到預(yù)期的抗震性能目標(biāo);4.針對(duì)結(jié)構(gòu)中的外框柱還進(jìn)行了罕遇地震下的抗震性能設(shè)計(jì),設(shè)計(jì)結(jié)果能夠滿足性能化要求;5.對(duì)整體結(jié)構(gòu)采用pushover進(jìn)行了推覆分析,分析結(jié)果表明:結(jié)構(gòu)在罕遇地震作用下的變形能力和抗倒塌能力良好,滿足“大震不倒”的抗震目標(biāo);6.在對(duì)整體結(jié)構(gòu)推覆的基礎(chǔ)上,對(duì)結(jié)構(gòu)中帶穿層柱的一榀框架進(jìn)行了推覆分析,分析結(jié)果表明:穿層柱不會(huì)先于其他柱出鉸。綜合以上探討研究,框架核心筒中外框柱作為第二道抗震防線具有良好的受力性能和變形能力,能夠充分發(fā)揮其作為第二道抗震防線的作用,可供同類工程參考。
[Abstract]:As a special structural form, the tubular structure has the characteristics of large lateral stiffness, reasonable force, flexible space, etc. It is especially suitable for super high-rise building structure. The frame core tube structure is widely used in office buildings because of its advantages of both frame and shear wall. In this paper, taking a frame-core tube structure as an example, PKPM structural software is used to model and analyze the structure. The whole structure and the outer frame column in the structure are studied and discussed from the following aspects. Satwe program is used to calculate and analyze the elasticity of the whole structure under frequent earthquakes. The analysis results show that all the calculation indexes meet the requirements of the code, the structure arrangement is reasonable, and the seismic fortification target of "small earthquake is not bad" can be reached. Based on the analysis of the whole structure, the shear sharing ratio of the two lines of the structure is analyzed. The results show that under the frequent earthquake, the core tube shear wall is used as the main lateral force resistance system, and the shear sharing ratio of the outer frame meets the requirements of the code, which can ensure that the outer frame column can play the role of the second line of defense. The seismic performance of the outer frame column in the structure is designed under the fortification intensity, and the design result can reach the expected seismic performance target. The seismic performance design of the outer frame column in the structure under rare earthquake is also carried out, and the design results can meet the requirements of performance. The pushover push-over analysis of the whole structure is carried out. The results show that the deformation ability and anti-collapse ability of the structure under rare earthquake are good, and the anti-collapse ability of the structure is satisfied with the seismic target of "large earthquake does not collapse". On the basis of pushing the whole structure, a frame with a cross story column in the structure is analyzed. The analysis results show that the perforated column will not come out of the hinge before the other columns. Synthesizing the above research, the outer frame column in the frame core tube as the second seismic defense line has good mechanical performance and deformation ability, and can give full play to its function as the second seismic defense line, which can be used as reference for similar projects.
【學(xué)位授予單位】：安徽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TU973.17

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