本文選題：再生混凝土 + T形短肢剪力墻　； 參考：《西安建筑科技大學(xué)》2014年碩士論文

【摘要】：隨著生活水平的提高，人們對(duì)住宅尤其是高層住宅平面與空間的要求越來(lái)越高，原來(lái)普通框架結(jié)構(gòu)的露梁露柱、普通剪力墻結(jié)構(gòu)對(duì)建筑空間的嚴(yán)格限定已經(jīng)不能滿足人們對(duì)住宅空間上的要求，因此吸收了普通剪力墻結(jié)構(gòu)和框架結(jié)構(gòu)雙重優(yōu)點(diǎn)以滿足人們新的住宅觀念的高層住宅結(jié)構(gòu)形式應(yīng)運(yùn)而生，即短肢剪力墻結(jié)構(gòu)。目前，眾多國(guó)內(nèi)外學(xué)者對(duì)短肢剪力墻的性能進(jìn)行了大量的試驗(yàn)研究和理論分析，但研究范圍仍主要集中在普通混凝土短肢剪力墻的性能方面，對(duì)于再生混凝土短肢剪力墻構(gòu)件的研究目前國(guó)內(nèi)甚少，幾乎處于空白狀態(tài)。因此，結(jié)合再生混凝土自身性能的特征，研究再生混凝土短肢剪力墻的抗震性能，探索再生混凝土短肢剪力墻的實(shí)用抗震設(shè)計(jì)方法，具有重要的理論與實(shí)際工程意義。 為了研究再生混凝土T形短肢剪力墻的抗震性能，本文主要做了以下工作： （1）以不同粗骨料取代率為主要參數(shù)，設(shè)計(jì)制作了15組共45個(gè)再生混凝土試塊，其中粗骨料取代率分別為0%、50%和100%。通過(guò)材性試驗(yàn)，研究了再生混凝土的立方體抗壓強(qiáng)度、軸心抗壓強(qiáng)度和彈性模量等，分析了不同取代率對(duì)再生混凝土力學(xué)性能的影響，同時(shí)還研究了不同取代率時(shí)再生混凝土受壓的應(yīng)力-應(yīng)變曲線，給出了不同取代率時(shí)再生混凝土受壓本構(gòu)模型的上升段方程。 （2）以不同粗骨料取代率和不同軸壓比為主要參數(shù)，按1/2縮尺比例設(shè)計(jì)制作了4根T形短肢剪力墻試驗(yàn)?zāi)Ｐ徒Y(jié)構(gòu)，并對(duì)其進(jìn)行了低周反復(fù)荷載作用下的擬靜力試驗(yàn)，研究了不同取代率及取代率為50%時(shí)不同軸壓比T形再生混凝土短肢剪力墻的破壞模式、滯回性能、承載能力、延性、剛度和耗能能力等，，并以試驗(yàn)結(jié)果為依據(jù)，分析了上述性能指標(biāo)隨粗骨料和軸壓比變化的一般規(guī)律，得出了一些可供參考的結(jié)論和建議。 （3）在試驗(yàn)研究的基礎(chǔ)上，參考已有研究成果，通過(guò)理論分析，建立了再生混凝土短肢剪力墻承載力計(jì)算的簡(jiǎn)化模型與公式，并進(jìn)行了承載力的理論計(jì)算，計(jì)算結(jié)果與試驗(yàn)結(jié)果進(jìn)行了對(duì)比，兩者吻合較好，同時(shí)建議了恢復(fù)力模型曲線的計(jì)算公式。 （4）以本文建議的再生混凝土受壓本構(gòu)模型和已有研究成果，應(yīng)用ABAQUS有限元分析軟件，進(jìn)行了再生混凝土短肢剪力墻的有限元模擬分析，研究了其滯回曲線和破壞形態(tài)，探討了其耗能能力，并與試驗(yàn)結(jié)果進(jìn)行了對(duì)比，兩者吻合較好，說(shuō)明本文建立的模型合理。
[Abstract]:With the improvement of living standard, people have higher and higher demands on the plane and space of the residence, especially the high-rise residence.The strict restriction of the common shear wall structure on the building space can no longer meet the requirements of the residential space.Therefore, the high-rise housing structure which absorbs the double advantages of the common shear wall structure and the frame structure to meet the new housing concept has emerged as the times require, that is, the short limb shear wall structure.At present, many scholars at home and abroad have done a lot of experimental research and theoretical analysis on the performance of short-leg shear wall, but the research scope is still focused on the performance of ordinary concrete short-leg shear wall.The research of regenerated concrete short-leg shear wall members is very few in our country at present, and it is almost blank.Therefore, it is of great theoretical and practical significance to study the seismic behavior of recycled concrete short-leg shear wall and to explore the practical seismic design method of recycled concrete short-leg shear wall.In order to study the seismic behavior of recycled concrete T-shaped short-leg shear wall, the main work of this paper is as follows:1) taking different coarse aggregate substitution rate as the main parameter, a total of 15 groups of 45 recycled concrete test blocks were designed and manufactured, in which the coarse aggregate replacement rates were 0% and 100% respectively.The cube compressive strength, axial compressive strength and elastic modulus of recycled concrete were studied through the test of wood properties, and the influence of different substitution rates on the mechanical properties of recycled concrete was analyzed.At the same time, the stress-strain curves of recycled concrete under different substitution rates are studied, and the rising equation of the constitutive model of recycled concrete under different substitution rates is given.(2) with different coarse aggregate replacement rate and different axial compression ratio as the main parameters, four T-shaped short-leg shear wall test model structures are designed according to the scale of 1 / 2 scale, and the quasi-static tests are carried out on them under low cyclic repeated loads.The failure modes, hysteretic properties, load-carrying capacity, ductility, stiffness and energy dissipation capacity of T-shaped recycled concrete short leg shear walls with different axial compression ratios at different replacement rates and replacement ratios of 50 are studied, and the results are based on the experimental results.The general rules of the above performance indexes with the change of coarse aggregate and axial compression ratio are analyzed, and some conclusions and suggestions for reference are obtained.On the basis of experimental research and referring to the existing research results, a simplified model and formula for calculating the bearing capacity of recycled concrete short-leg shear walls are established through theoretical analysis, and the theoretical calculation of the bearing capacity is carried out.The calculated results are in good agreement with the experimental results, and the formula of the restoring force model curve is suggested.4) based on the constitutive model of recycled concrete under compression and existing research results, the finite element simulation analysis of recycled concrete short leg shear wall is carried out by using ABAQUS finite element analysis software, and its hysteretic curve and failure mode are studied.The energy dissipation capacity is discussed and compared with the experimental results. The results are in good agreement with each other, which indicates that the proposed model is reasonable.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU398.2;TU352.11

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