本文選題：框架結(jié)構(gòu)　切入點(diǎn)：穿層柱　出處：《安徽建筑大學(xué)》2013年碩士論文

【摘要】：隨著我國(guó)經(jīng)濟(jì)的高速發(fā)展,城鎮(zhèn)化的發(fā)展也越來(lái)越快,城市人口數(shù)量越來(lái)越多,在城鎮(zhèn)涌現(xiàn)出大量的多層、高層建筑及超高層建筑,其中不乏形體復(fù)雜,建筑外觀多樣化的結(jié)構(gòu),像住宅、酒店和商場(chǎng)等,而商業(yè)建筑一般人流密集,建筑外部造型宏偉,內(nèi)部空間寬敞,結(jié)構(gòu)平面大開(kāi)間,而由于共享開(kāi)間又容易形成穿層柱等比較復(fù)雜的的結(jié)構(gòu)形式,商業(yè)建筑的使用功能多樣化,可做餐飲、娛樂(lè)、購(gòu)物、休閑等于一體的綜合商業(yè),而商業(yè)建筑也可能后期改造,比如樓層內(nèi)做夾層,結(jié)構(gòu)整體加層改造等,這是都是工程師所必須考慮到的問(wèn)題。另外近年來(lái)地震活動(dòng)頻繁,造成危害嚴(yán)重,如何保證商業(yè)建筑的抗震性能,使其滿(mǎn)足“大震不倒”的要求,就成為商業(yè)建筑設(shè)計(jì)中必須考慮的問(wèn)題。隨著基于性能的抗震設(shè)計(jì)的理論被工程界所采用,對(duì)其研究和應(yīng)用已成為當(dāng)前工程界熱點(diǎn)。本文以某帶穿層柱框架結(jié)構(gòu)商業(yè)建筑為例,結(jié)合基于性能的抗震設(shè)計(jì)進(jìn)行了以下幾個(gè)方面的研究工作： 1.本文結(jié)合規(guī)范要求,采用SATWE程序?qū)戏誓成虡I(yè)建筑進(jìn)行了小震下的振型分解反應(yīng)譜法分析,補(bǔ)充了進(jìn)行彈性時(shí)程分析,結(jié)果表明該商業(yè)建筑在小震下,有足夠的安全儲(chǔ)備,能夠保證人員安全,保證“小震不壞”設(shè)防目標(biāo)。 2.考慮大震下結(jié)構(gòu)進(jìn)入塑性,本文采用PUSHEPDA和Midas building兩種彈塑性分析軟件,對(duì)某商業(yè)建筑結(jié)構(gòu)進(jìn)行了靜力彈塑性推覆分析。結(jié)果表明結(jié)構(gòu)能夠通過(guò)抗倒塌驗(yàn)算,滿(mǎn)足“大震不到”,并且結(jié)構(gòu)構(gòu)件的屈服機(jī)制也滿(mǎn)足“強(qiáng)柱弱梁”,同時(shí)比較了兩種軟件計(jì)算的差異。 3.考慮地震動(dòng)下結(jié)構(gòu)的真實(shí)地震響應(yīng),采用PUSHEPDA軟件,對(duì)某商業(yè)建筑進(jìn)行了動(dòng)力彈塑性時(shí)程分析。結(jié)果表明,選取的三條地震波較為合適；結(jié)構(gòu)能滿(mǎn)足“大震不到”；并且找到結(jié)構(gòu)地震下的薄弱構(gòu)件,在實(shí)際設(shè)計(jì)中進(jìn)行加強(qiáng)。 4.分析了穿層柱在大震結(jié)構(gòu)進(jìn)入塑性情況下的受力性能。穿層柱表現(xiàn)出較好的變形能力,穿層柱出鉸滯后。 5.針對(duì)某商業(yè)建筑后期可能改造,加層等最不利工況的考慮,本文做了對(duì)某商業(yè)建筑改造加層后抗震性能分析,同時(shí)對(duì)比改造結(jié)構(gòu),找到結(jié)構(gòu)變化部位,并且了解結(jié)構(gòu)在大震下耗能,屈服機(jī)制等是否發(fā)生變化。結(jié)構(gòu)表明,改造后結(jié)構(gòu)同樣可以滿(mǎn)足設(shè)防水準(zhǔn)目標(biāo),改造后結(jié)構(gòu)在大震下耗能損傷機(jī)制有所改變,在設(shè)計(jì)中要考慮到結(jié)構(gòu)改造后的情形進(jìn)行設(shè)計(jì)。
[Abstract]:With the rapid development of our country's economy and the rapid development of urbanization, the number of urban population is increasing, and a large number of multi-storey, high-rise and super-tall buildings have emerged in cities and towns, among which the shape is complex. The architectural appearance is diversified, such as residential, hotel and shopping malls, while commercial buildings are generally densely populated, with magnificent exterior shapes, spacious interior spaces, and large flat spaces. And because sharing rooms is easy to form more complex structural forms such as crossing columns, the use of commercial buildings is diversified and can be used as a comprehensive commercial equivalent of catering, entertainment, shopping and leisure, and commercial buildings may also be transformed in the later stages. For example, making interlayer in the floor and rebuilding the structure as a whole are all problems that engineers must consider. In addition, in recent years, frequent seismic activities have caused serious harm. How to ensure the seismic performance of commercial buildings? Making it meet the requirement of "strong earthquake will not fail" has become a problem that must be considered in the design of commercial buildings. As the theory of performance-based seismic design is adopted by the engineering world, The research and application of this structure has become a hot topic in the engineering field. This paper takes a commercial building with a story-pierced column frame structure as an example and carries out the following research work in combination with performance-based seismic design:. 1. According to the requirements of the code, a commercial building in Hefei is analyzed by the mode decomposition response spectrum method under a small earthquake with SATWE program, which is supplemented by elastic time history analysis. The results show that the commercial building has sufficient safety reserves under the small earthquake. Can ensure the safety of personnel, to ensure the "small earthquake not bad" fortification target. 2. Considering the structure entering plasticity under the strong earthquake, the static elastic-plastic nappe analysis of a commercial building structure is carried out by using PUSHEPDA and Midas building software. The results show that the structure can be checked by anti-collapse calculation. In addition, the yield mechanism of structural members is also satisfied with "strong column and weak beam". The difference between the two kinds of software calculation is also compared. 3. Considering the real seismic response of the structure under ground motion, the dynamic elastic-plastic time-history analysis of a commercial building is carried out by using PUSHEPDA software. The results show that the three seismic waves selected are more suitable; The structure can satisfy the "big earthquake can not meet", and find the weak component under the structure earthquake, and strengthen in the actual design. 4. The mechanical behavior of the perforated column under the plastic condition of the strong earthquake structure is analyzed. 5. In view of the consideration of the most unfavorable working conditions, such as the possible retrofit and adding storeys of a commercial building in the later stage, this paper analyzes the seismic behavior of a commercial building after adding the storeys, compares the reconstructed structure, and finds out the changing position of the structure. It is shown that the modified structure can also meet the level goal of fortification, and the damage mechanism of the structure under the earthquake will be changed after the transformation, and whether the energy dissipation and yield mechanism of the structure will change under the strong earthquake, the structure shows that the modified structure can also meet the goal of the level of defense. In the design, we should consider the situation after the structural transformation to carry out the design.
【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】：2013
【分類(lèi)號(hào)】：TU973.31

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