本文關(guān)鍵詞：帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻抗震性能研究　出處：《華南理工大學(xué)》2013年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 約束拉桿 雙層鋼板 剪力墻 抗震性能 纖維模型法 有限元分析 恢復(fù)力模型

【摘要】：超高層建筑結(jié)構(gòu)的剪力墻往往要承擔(dān)巨大的豎向荷載和地震作用，，若采用普通鋼筋混凝土剪力墻，其墻體過(guò)厚，導(dǎo)致成本增加及結(jié)構(gòu)整體控制困難。因此，研發(fā)出承載力高、延性耗能好且施工簡(jiǎn)便的組合剪力墻是解決此難題的有效途徑。 本文中提出一種新型帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻，并采用試驗(yàn)研究、理論分析、數(shù)值模擬相結(jié)合的方法對(duì)其力學(xué)性能和抗震性能進(jìn)行了研究，具體開(kāi)展了以下幾方面的研究工作： （1）進(jìn)行了11個(gè)帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻在低周往復(fù)荷載作用下的試驗(yàn)研究。試驗(yàn)考察的主要參數(shù)為：約束拉桿間距、約束拉桿布置方式、軸壓比、剪跨比。分析了上述各個(gè)參數(shù)對(duì)組合剪力墻的破壞形態(tài)、滯回曲線、骨架曲線、強(qiáng)度及剛度退化、位移延性系數(shù)及耗能等抗震性能的影響。結(jié)果表明，帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻具有良好的承載力、延性和耗能能力，是一種抗震性能良好的新型組合構(gòu)件。 （2）采用纖維模型法，基于MATLAB平臺(tái)，自編程序建立了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻在壓彎狀態(tài)下數(shù)值仿真模型。利用試驗(yàn)結(jié)果驗(yàn)證了數(shù)值模型，在此基礎(chǔ)上，分析了混凝土強(qiáng)度、鋼板強(qiáng)度、含鋼率、端柱和墻身鋼板比例、截面高度、混凝土板厚度、約束拉桿直徑、約束拉桿屈服強(qiáng)度、墻身約束拉桿間距、邊緣端柱約束拉桿間距等參數(shù)對(duì)組合剪力墻壓彎承載力的影響。最后通過(guò)數(shù)值回歸分析，提出了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻壓彎承載力簡(jiǎn)化計(jì)算公式。 （3）提出了適用于ABAQUS分析帶約束拉桿方形、矩形鋼管混凝土柱的混凝土應(yīng)力-應(yīng)變關(guān)系式，并基于ABAQUS平臺(tái)，編寫(xiě)了能考慮多種材料泊松比在整個(gè)受力過(guò)程變化的子程序USDFLD，完善了材料的本構(gòu)模型，分析了帶約束拉桿方形、矩形鋼管混凝土柱的工作機(jī)理�；谇懊婊A(chǔ)，建立了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻有限元分析模型，并利用試驗(yàn)結(jié)果驗(yàn)證了此模型。在此基礎(chǔ)上，研究了組合剪力墻的工作機(jī)理并進(jìn)行了混凝土強(qiáng)度、鋼板強(qiáng)度、截面含鋼率、墻體剪跨比等參數(shù)的分析�；诔休d力疊加原理，提出了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻抗剪承載力簡(jiǎn)化計(jì)算公式。 （4）在試驗(yàn)所獲得滯回曲線和骨架曲線的基礎(chǔ)上，采用試驗(yàn)擬合法，建立了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻的骨架曲線，給出了骨架曲線各個(gè)關(guān)鍵點(diǎn)的計(jì)算公式。通過(guò)剛度退化數(shù)據(jù)的回歸分析給出了剛度退化計(jì)算公式和基于試驗(yàn)所得滯回曲線的分析描述了強(qiáng)度退化規(guī)律，得到了組合剪力墻的滯回規(guī)律。基于簡(jiǎn)化三折線骨架曲線和滯回規(guī)律，建立了帶約束拉桿雙層鋼板內(nèi)填混凝土組合剪力墻恢復(fù)力模型。
[Abstract]:The shear wall structure of high-rise building to bear vertical load and earthquake action are great, if the ordinary reinforced concrete shear wall, the wall is too thick, difficult to control and increase the cost of the whole structure. Therefore, the development of high bearing capacity, good ductility and convenient construction of the composite shear wall is an effective way to solve the problem.
In this paper, a new type of double shear wall concrete filled composite shear wall with tied bars is proposed, and its mechanical and seismic performance is studied by combining experimental research, theoretical analysis and numerical simulation.
(1) studied 11 with binding bars and double steel concrete composite shear walls under cyclic load. The main parameters of the test is: constraint rod, rod constraint arrangement, axial compression ratio, shear span ratio are analyzed. The failure modes of various parameters on composite shear wall the hysteretic curves, skeleton curves, strength and stiffness degradation, seismic displacement ductility coefficient and energy dissipation. The results show that the constrained rod double steel concrete composite shear wall has good bearing capacity, ductility and energy dissipation capacity, is a new type of composite component, good seismic performance.
(2) the fiber model method, based on the MATLAB platform, the program is built with binding bars and double steel concrete composite shear wall numerical simulation model in bending condition. The numerical model was validated by experimental results, based on the analysis of concrete strength, steel strength, steel ratio, end column and wall steel ratio, sectional height, thickness of concrete slab, binding bar diameter, binding bars yield strength, wall spacing of the binding bars. The effects of edge end column spacing of the binding bars and other parameters on the bearing capacity of composite shear wall bending. Finally a numerical regression analysis, presented with binding bars and double steel concrete composite shear wall bending the simplified calculation formula of bearing capacity.
(3) is proposed for ABAQUS analysis with square rod constraint, concrete-filled rectangular steel tube concrete column stress-strain relationship, and based on the ABAQUS platform, written to consider a variety of Poisson's ratio in the whole loading process changes the subroutine USDFLD, improve the material constitutive model, analyzed with square rod constraint and the working mechanism of rectangular steel tube concrete column. Based on the above basis, a concrete composite shear wall finite element analysis model of the double plate with binding bars, and use the result to verify the model. On this basis, studies the working mechanism of composite shear walls and concrete strength, steel strength, steel ratio section, wall shear span ratio parameter analysis. The bearing capacity is put forward based on the principle of superposition, constrained rod and double steel concrete composite shear wall shear capacity calculation formula.
(4) based on the obtained hysteretic curve and skeleton curve, the fitting test, a skeleton curve with binding bars and double steel concrete composite shear wall, gives the calculation formula of the skeleton curve of each key point. Through stiffness analysis gives the calculation formula of stiffness degradation and test analysis the hysteresis curve based on the description of the degradation of strength degradation data regression, the composite shear wall hysteretic rules. The simplified three line skeleton curves and hysteretic rules based on a constrained rod and double steel filled concrete composite shear wall hysteretic model.

【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU352.11

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