本文關(guān)鍵詞：基于ABAQUS的配筋構(gòu)造柱式砌體墻的有限元分析　出處：《鄭州大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 有限元 窗間墻 一字墻 砌體結(jié)構(gòu) 彎曲破壞 抗震性能

【摘要】：我國(guó)是全世界地震活動(dòng)最頻繁的國(guó)家之一,歷次大地震都造成了嚴(yán)重的人員財(cái)產(chǎn)損失。砌體建筑由于其造價(jià)便宜,施工方便等優(yōu)點(diǎn),在我國(guó)今后一個(gè)時(shí)期內(nèi)仍然會(huì)大量的存在。砌體結(jié)構(gòu)在地震中的破壞尤為嚴(yán)重,因此研究砌體結(jié)構(gòu)的破壞機(jī)理,提高砌體的抗震性能及延性,為人們?cè)诘卣鹬刑由鸂?zhēng)取更加寶貴的時(shí)間。本文首先介紹了砌體建筑地震中的受力狀況以剪切為主,但也存在相當(dāng)部分彎曲破壞的房屋。對(duì)近些年來(lái)國(guó)內(nèi)外專(zhuān)家對(duì)砌體結(jié)構(gòu)進(jìn)行試驗(yàn)和分析的狀況進(jìn)行了綜述,對(duì)比彎曲破壞的優(yōu)勢(shì)和剪切破壞的缺點(diǎn),指出發(fā)生彎曲破壞是提高砌體墻抗震能力的有效途徑。依據(jù)研究目的對(duì)砌體模型加以設(shè)計(jì)。分析對(duì)承載力產(chǎn)生影響的因素,在有關(guān)理論的基礎(chǔ)上,對(duì)模型墻體進(jìn)行理論上的斜截面抗剪承載力和正截面抗彎承載力進(jìn)行計(jì)算。根據(jù)剪跨比計(jì)算的結(jié)果,對(duì)模型的加載高度進(jìn)行取值。采用有限元軟件ABAQUS按照模型尺寸來(lái)建立窗間墻和一字墻有限元模型,通過(guò)應(yīng)力云圖分析模型的破壞過(guò)程,對(duì)比分析模擬得到的加載曲線(xiàn)和骨架曲線(xiàn),得到如下結(jié)論：1.隨著加載高度的提高,兩模型極限水平承載力慢慢減小,但是后期的延性和耗能能力有所提升。增大豎向壓力可提高承載力,若是壓力過(guò)大會(huì)發(fā)生脆性的斜壓破壞。2.設(shè)置構(gòu)造柱和配筋的窗間墻模型在豎向壓力和水平荷載共同作用下易發(fā)生剪切破壞,一字墻較容易發(fā)生彎曲或彎剪破壞。素墻會(huì)發(fā)生脆性的剪切破壞,其極限承載力低于同等條件下的配筋砌體。配筋砌體破壞后由于構(gòu)造柱及鋼筋的設(shè)置,大大延緩了破壞的進(jìn)程。3.對(duì)比分析循環(huán)往復(fù)加載得到相應(yīng)的滯回曲線(xiàn)和骨架曲線(xiàn),窗間墻模型W-1的極限承載能力比一字墻模型Q-1的大,Q-1的延性性能優(yōu)于W-1,說(shuō)明后期的塑性變形計(jì)耗能能力好。綜上說(shuō)明本文的模擬結(jié)果具有一定的參考價(jià)值。
[Abstract]:China is one of the world's most frequent seismic activity, the previous earthquake caused serious loss of property. The masonry building because of its low cost, the advantages of convenience, in China for a period of time will still exist. A large number of masonry structure damage in the earthquake is particularly serious, so the failure mechanism Research on masonry structure, improve the seismic performance and ductility of masonry, strive for more precious time for people to escape in the earthquake. This paper first introduces the masonry buildings in seismic stress condition by shearing, but there are also a considerable part of bending failure housing. In recent years the domestic and foreign experts to test and masonry structure analysis of the situation were summarized, comparison of bending failure and shear failure of the advantages disadvantages, pointed out that the occurrence of bending failure is an effective way to improve the seismic capacity of the masonry wall. According to the study purpose The design of masonry model. Analysis of the impact factors on the bearing capacity, based on the related theory, the model of theory on the wall of oblique section shear capacity and flexural capacity are calculated. According to the section of the shear span ratio calculation, the value model of the load height. According to the model size to build a wall between windows and a wall finite element model by the finite element software ABAQUS, the stress nephogram analysis of failure process model, comparative analysis of the simulated load curve and skeleton curve, the conclusions are as follows: 1. with the loading height increased, gradually reduce the bearing capacity of two level model, but the ductility and energy dissipation capacity of the late the increase of vertical pressure can be improved. To improve the bearing capacity, if the baroclinic pressure will occur brittle failure.2. constructional column and the reinforcement of the window wall model in the vertical pressure and water The interaction of horizontal load under shear failure easily occurs, the word wall more prone to bending or shear bending shear wall will occur. In brittle failure, lower reinforcement of masonry under the same conditions. The ultimate bearing capacity of reinforced masonry column and reinforced after the destruction of the tectonic setting, greatly extended contrast.3. corrosion damage process the analysis of the corresponding cyclic loading hysteretic curves and skeleton curves, load bearing capacity than the word wall model Q-1 large W-1 limit wall model window, ductility performance of Q-1 is better than W-1, shows that the plastic deformation energy dissipation capacity meter of late Ming said. To sum up simulation results in this paper have a certain reference value.

【學(xué)位授予單位】：鄭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU364

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本文編號(hào)：1383102