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雙鋼板—交錯(cuò)栓釘—混凝土組合剪力墻抗震性能研究

發(fā)布時(shí)間:2018-07-03 21:37

  本文選題:雙鋼板剪力墻 + 高層建筑; 參考:《中國地震局工程力學(xué)研究所》2014年碩士論文


【摘要】:近三十年來,我國經(jīng)濟(jì)高速增長,人口數(shù)量不斷增加,城市化進(jìn)程快速推進(jìn),復(fù)雜高層建筑大量在抗震設(shè)防區(qū)興建,不少已成為城市的標(biāo)志性建筑,剪力墻是高層及超高層建筑中的基本抗側(cè)力構(gòu)件,但傳統(tǒng)的鋼筋混凝土剪力墻變形能力小、延性較差,目前在很多情況下已難以滿足工程要求。已有研究顯示雙鋼板-混凝土組合剪力墻力學(xué)性能良好,但目前適用于高層民用建筑的雙鋼板-混凝土組合剪力墻的相關(guān)研究開展還較少。本文針對這一問題,主要的研究工作和成果如下: 1.本文總結(jié)吸收以往國內(nèi)外的相關(guān)研究成果,提出了一種新型的雙鋼板-交錯(cuò)栓釘-混凝土組合剪力墻,由細(xì)觀到宏觀進(jìn)行了三個(gè)層次的試驗(yàn)研究,依次為交錯(cuò)栓釘受力性能試驗(yàn)研究、鋼板-栓釘-混凝土相互作用試驗(yàn)研究和新型組合剪力墻擬靜力試驗(yàn)研究。 2.設(shè)計(jì)了12個(gè)交錯(cuò)栓釘抗拉試驗(yàn)件和12個(gè)抗剪試驗(yàn)件,研究了不同參數(shù)下的交錯(cuò)栓釘?shù)目估涂辜粜阅,揭示了交錯(cuò)栓釘?shù)墓ぷ魇芰C(jī)理,同時(shí)為后續(xù)試驗(yàn)研究提供研究基礎(chǔ),為此種新型雙鋼板-交錯(cuò)栓釘-混凝土組合剪力墻提供設(shè)計(jì)依據(jù)。 3.進(jìn)行了鋼板-栓釘-混凝土相互作用試驗(yàn),設(shè)計(jì)了6個(gè)組合墻軸壓試驗(yàn)件,通過單向軸壓試驗(yàn)及有限元分析揭示了新型雙鋼板-交錯(cuò)栓釘-混凝土組合剪力墻中各部件之間的受力機(jī)理及協(xié)調(diào)工作機(jī)制。研究結(jié)果表明墻體兩側(cè)鋼板通過交錯(cuò)栓釘與混凝土之間的咬合作用可以保證與混凝土協(xié)調(diào)工作,一方面混凝土在軸壓下受到雙層鋼板的約束,,使其軸向抗壓強(qiáng)度和變形能力有較大的提高,另一方面混凝土也對鋼板的面外變形起到約束作用,防止其面外屈曲。 4.進(jìn)行了7個(gè)雙鋼板-交錯(cuò)栓釘-混凝土組合剪力墻和1個(gè)鋼筋混凝土剪力墻的低周循環(huán)加載擬靜力試驗(yàn),研究了不同參數(shù)的組合剪力墻在豎向軸壓和水平往復(fù)荷載下的力學(xué)性能和破壞模式,分析了組合剪力墻的承載能力、剛度退化特性、延性和變形能力以及耗能能力,并根據(jù)試驗(yàn)結(jié)果提出了組合墻的承載力計(jì)算公式,研究結(jié)果表明本文提出的新型雙鋼板-交錯(cuò)栓釘-混凝土組合剪力墻承載力高、延性好、耗能能力良好,且構(gòu)造簡單、施工方便,在高層建筑結(jié)構(gòu)中具有應(yīng)用價(jià)值。
[Abstract]:In the past three decades, the economy of our country has grown rapidly, the population has been increasing, the process of urbanization has been advancing rapidly, and a large number of complex high-rise buildings have been built in earthquake-resistant areas, many of which have become the iconic buildings of cities. Shear wall is a basic lateral force resistant member in high-rise and super high-rise buildings, but the traditional reinforced concrete shear wall has small deformation capacity and poor ductility, so it is difficult to meet the engineering requirements in many cases. Previous studies have shown that the mechanical properties of double-plate-concrete composite shear walls are good, but there are few researches on double-plate-concrete composite shear walls which are suitable for high-rise civil buildings at present. In this paper, the main research work and results are as follows: 1. In this paper, a new type of double steel plate, staggered bolt and concrete composite shear wall is put forward, which is composed of two steel plates, interlocking bolt and concrete, and three levels of experimental research are carried out from microscopic to macroscopic. The following are in turn: the experimental study on the mechanical behavior of staggered bolt, the experimental study on the interaction between steel plate, bolt and concrete, and the pseudostatic test of a new type of composite shear wall. 2. Twelve tensile test pieces and 12 shear test pieces were designed. The tensile and shear properties of interlaced bolt under different parameters were studied, the working mechanism of interlaced bolt was revealed, and the research foundation was provided for further test research. Therefore, the design basis of a new type of double steel plate-staggered bolt-concrete composite shear wall is provided. The experiment on the interaction between steel plate, bolt and concrete was carried out, and six composite wall axial compression test pieces were designed. Through unidirectional axial compression test and finite element analysis, the stress mechanism and coordination mechanism among the components in a new type of double steel plate, staggered bolt and concrete composite shear wall are revealed. The results show that the occlusal action of the steel plates on both sides of the wall can be ensured to work in harmony with the concrete through the interlaced bolt. On the one hand, the concrete is restrained by the double-layer steel plate under axial compression. The axial compressive strength and deformation ability of the steel plate are greatly improved. On the other hand, concrete also acts as a constraint on the out-of-plane deformation of the steel plate and prevents its out-of-plane buckling. 4. In this paper, the pseudostatic tests of 7 double steel plate staggered bolt concrete composite shear walls and 1 reinforced concrete shear wall under low cycle cyclic loading are carried out. The mechanical properties and failure modes of composite shear walls with different parameters under vertical axial and horizontal reciprocating loads are studied. The load-carrying capacity, stiffness degradation, ductility, deformation capacity and energy dissipation capacity of composite shear walls are analyzed. Based on the experimental results, a formula for calculating the bearing capacity of composite wall is proposed. The research results show that the new type of composite shear wall proposed in this paper has high bearing capacity, good ductility, good energy dissipation capacity and simple structure. It is easy to construct and has application value in high-rise building structure.
【學(xué)位授予單位】:中國地震局工程力學(xué)研究所
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TU398.9

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