本文關(guān)鍵詞： 黏滯流體阻尼器 鋼筋混凝土抗震設(shè)計(jì)框架結(jié)構(gòu) 鋼筋混凝土減震設(shè)計(jì)框架結(jié)構(gòu) 增量動(dòng)力時(shí)程分析 抗倒塌易損性　出處：《東南大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：與傳統(tǒng)抗震設(shè)計(jì)不同,結(jié)構(gòu)的減震設(shè)計(jì)通過在結(jié)構(gòu)上設(shè)置減震裝置,利用減震裝置消耗地震能量,達(dá)到減輕主體結(jié)構(gòu)地震響應(yīng)的目的。無論是采用減震設(shè)計(jì)的結(jié)構(gòu)還是抗震設(shè)計(jì)的結(jié)構(gòu)都需要滿足“大震不倒”的抗震要求,并還需具有足夠的抗倒塌安全儲(chǔ)備來抵抗可能遭遇的更大地震下的倒塌破壞。當(dāng)黏滯流體阻尼器應(yīng)用于既有建筑物的加固時(shí),由于黏滯流體阻尼器對(duì)結(jié)構(gòu)只附加阻尼而不附加剛度,加固后結(jié)構(gòu)的抗震與抗倒塌性能必然是優(yōu)于原結(jié)構(gòu)的；當(dāng)黏滯流體阻尼器應(yīng)用于新建建筑物時(shí),該結(jié)構(gòu)截面尺寸或配筋較相同地震作用下抗震設(shè)計(jì)的結(jié)構(gòu)有一定的優(yōu)化減小,考慮減震設(shè)計(jì)結(jié)構(gòu)截面配筋優(yōu)化后,阻尼器對(duì)減震設(shè)計(jì)結(jié)構(gòu)抗倒塌性能的提升作用有多大,需要進(jìn)一步研究。本文以鋼筋混凝土框架結(jié)構(gòu)為例,通過基于動(dòng)力增量時(shí)程分析的抗地震倒塌易損性分析方法,對(duì)采用黏滯流體阻尼器減震設(shè)計(jì)結(jié)構(gòu)的抗地震倒塌能力進(jìn)行相關(guān)分析研究,定量對(duì)比分析了減震設(shè)計(jì)結(jié)構(gòu)和抗震設(shè)計(jì)結(jié)構(gòu)的抗地震倒塌性能,主要研究工作和成果如下：(1)根據(jù)我國(guó)現(xiàn)行抗震規(guī)范按設(shè)防烈度為7.5度、8度和8.5度分別設(shè)計(jì)了6層和9層抗震設(shè)計(jì)鋼筋混凝土框架結(jié)構(gòu),并按照主體結(jié)構(gòu)地震作用降半度的消能減震設(shè)計(jì)目標(biāo)設(shè)計(jì)了相應(yīng)的減震設(shè)計(jì)結(jié)構(gòu),消能減震設(shè)計(jì)采用黏滯流體阻尼器。采用MARC軟件建立各結(jié)構(gòu)的彈塑性分析模型。(2)對(duì)附設(shè)線性黏滯流體阻尼器和非線性黏滯流體阻尼器減震設(shè)計(jì)結(jié)構(gòu)的抗倒塌能力進(jìn)行對(duì)比研究。分析了附設(shè)線性黏滯流體阻尼器減震設(shè)計(jì)結(jié)構(gòu)抗地震倒塌能力弱于附設(shè)非線性黏滯流體阻尼器減震設(shè)計(jì)結(jié)構(gòu)的原因,發(fā)現(xiàn)線性黏滯流體阻尼器與非線性黏滯流體阻尼器相比雖然能夠提供較大的附加阻尼力,但同時(shí)阻尼器對(duì)連接柱的附加軸力作用也很明顯,導(dǎo)致結(jié)構(gòu)底層柱更易發(fā)生破壞,從而降低結(jié)構(gòu)的抗地震倒塌能力。(3)對(duì)不同設(shè)防烈度抗震設(shè)計(jì)和減震設(shè)計(jì)結(jié)構(gòu)的抗倒塌能力進(jìn)行評(píng)價(jià)研究。研究發(fā)現(xiàn)不同設(shè)防烈度下抗震設(shè)計(jì)與減震設(shè)計(jì)結(jié)構(gòu)都能滿足“大震不倒”性能要求,且都具有足夠的抗倒塌安全儲(chǔ)備。設(shè)防烈度8度和8.5度時(shí),抗震設(shè)計(jì)與減震設(shè)計(jì)結(jié)構(gòu)甚至能夠滿足“特大震不倒”性能要求,而設(shè)防烈度7.5度時(shí),抗震設(shè)計(jì)與減震設(shè)計(jì)結(jié)構(gòu)在特大震下的抗倒塌能力略顯不足。(4)對(duì)不同設(shè)防烈度下減震設(shè)計(jì)結(jié)構(gòu)與抗震設(shè)計(jì)結(jié)構(gòu)抗倒塌能力進(jìn)行對(duì)比研究。研究結(jié)果表明,設(shè)防烈度7.5度時(shí),減震設(shè)計(jì)框架結(jié)構(gòu)的抗倒塌能力強(qiáng)于抗震設(shè)計(jì)框架結(jié)構(gòu)；而設(shè)防烈度8度和8.5度時(shí),采用常規(guī)減震設(shè)計(jì)方法設(shè)計(jì)的減震結(jié)構(gòu)由于梁、柱構(gòu)件配筋的優(yōu)化減少可能出現(xiàn)抗倒塌能力與抗震設(shè)計(jì)結(jié)構(gòu)相比偏弱的現(xiàn)象。(5)通過對(duì)比減震設(shè)計(jì)結(jié)構(gòu)與抗震設(shè)計(jì)結(jié)構(gòu)的倒塌模式和塑性耗能需求發(fā)現(xiàn),阻尼器對(duì)減震設(shè)計(jì)結(jié)構(gòu)的塑性耗能分布有兩方面的影響：一是大量減少梁、柱構(gòu)件總的塑性耗能需求；二是影響結(jié)構(gòu)塑性耗能沿樓層的分布,使結(jié)構(gòu)塑性耗能更集中于底層部位,設(shè)防烈度越高,這種現(xiàn)象越明顯。因此,建議高烈度區(qū)的減震設(shè)計(jì)結(jié)構(gòu)通過加強(qiáng)底層柱的配筋來提高其抗倒塌能力,通過驗(yàn)證發(fā)現(xiàn),加強(qiáng)減震設(shè)計(jì)結(jié)構(gòu)底層柱配筋能夠有效提升其抗倒塌能力。
[Abstract]:Different from the traditional seismic design, seismic design of structures by the damping device is arranged in the structure, the damping device consumes the earthquake energy, reduce the earthquake response of the main structure of the objective. Whether the structure seismic design or seismic design of the structure to satisfy the requirements of seismic earthquake does not fall, and also need to have enough the collapse margin against a larger earthquake collapse may encounter the damage. When the viscous fluid damper applied to the reinforcement of existing buildings, due to viscous fluid damper only added damping of the structure without additional stiffness, the strengthened structure anti-seismic and anti collapse performance is better than the original structure; when the viscous fluid damper used in the new building, the structure section size or reinforcement than under the same earthquake seismic design has reduced some optimization considering shock The design of structure reinforcement after the optimization of damper on seismic design of structural collapse resistance to enhance the role of performance is much, need further study. In this paper, the reinforced concrete frame structure as an example, based on the incremental dynamic time history analysis of the seismic collapse fragility analysis method, correlation analysis study on the anti seismic fluid viscous dampers seismic design of structure collapse, a quantitative analysis of the anti seismic isolation design structure and the seismic design of structure collapse performance, the main research work and results are as follows: (1) according to the current seismic code according to the fortification intensity is 7.5 degrees, 8 degrees and 8.5 degrees respectively designed 6 layers and 9 layers of reinforced concrete aseismic design frame structure, and in accordance with the main structure of the earthquake effect reduced half degree energy dissipation design target design of seismic design of structure, design of energy dissipation by viscous flow damping body . using MARC software to establish the analysis model of the structure of the plastic bomb. (2) the comparative study of a linear viscous fluid damper and nonlinear viscous fluid damper design the collapse resistance of the structure is analyzed. A linear viscous fluid damper design of structure seismic collapse resistance to weak with non-linear viscous lag reasons the fluid damper design structure, it was found that the linear viscous fluid damper with nonlinear fluid viscous dampers can provide additional damping force compared to the larger, but the additional axial damper on the connecting column with work is also very obvious, resulting in the underlying structure of column is more prone to damage, so as to reduce the seismic collapse resistance of structures. (3) to evaluate and study different fortification intensity seismic design and seismic design of the collapse resistance of the structure. The study found that the design and the seismic fortification intensity under different damping The design structure can meet the earthquake inverted performance requirements, and have enough safety against collapse reserves. Fortificationintensity is 8 degree and 8.5 degree, seismic design and seismic design of structure and satisfy the "large earthquake without collapse performance requirements, and the fortification intensity of 7.5 degrees, the seismic design and seismic design the structure in the large earthquake under the anti collapse capacity insufficient. (4) the comparative study of different fortification intensity seismic design and seismic design of structure collapse resistant capacity of structures. The results show that the seismic fortification intensity of 7.5 degrees, seismic design of frame structure of anti collapse ability in the seismic design of frame structure; and the fortification intensity of 8 and 8.5 degrees, the structure design of conventional seismic design methods due to the beam column reinforcement, optimization and reduce the possible anti collapse capacity compared with the seismic design of the structure of weak phenomenon. (5) by comparing the damping. The structure and the seismic design of the structure collapse mode and plastic energy demand, damper on seismic design of the structure of plastic has two implications of energy distribution: one is to reduce the amount of beam column, the total plastic energy demand; two is the distribution structure of plastic energy dissipation along the floor, so that the structure of the plastic energy is more concentrated in the lower part, fortification intensity is high, this phenomenon is more obvious. Therefore, suggestions for seismic design of structures in high intensity region through the reinforcement of column to improve its anti collapse ability, it was proved that strengthening the seismic design of structure of bottom layer column reinforcement can effectively enhance the ability of anti collapse.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU375.4;TU352.11

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