本文選題：仿古建筑 + 鋼結(jié)構(gòu)�。� 參考：《西安建筑科技大學(xué)》2015年碩士論文

【摘要】：仿古建筑傳承了中國古建筑造型優(yōu)美、大氣磅礴的特點(diǎn),在實(shí)際工程中得到越來越廣泛的應(yīng)用。柱是仿古建筑的重要組成部分,其外形和傳統(tǒng)古建筑柱的外形保持一致。仿古建筑方鋼管柱與圓鋼管柱連接的上、下柱采用了不同的截面形式,其連接構(gòu)造、傳力方式與現(xiàn)代建筑常規(guī)鋼結(jié)構(gòu)節(jié)點(diǎn)有很大不同,至今缺乏系統(tǒng)的試驗(yàn)研究和理論分析,目前尚無針對(duì)此類構(gòu)件的設(shè)計(jì)規(guī)范可供借鑒。為了研究仿古建筑方鋼管柱與圓鋼管柱連接的破壞形態(tài)和抗震性能,設(shè)計(jì)并制作了4個(gè)縮尺比例為1/1.5的柱連接模型,通過施加恒定軸壓比的豎向荷載和低周往復(fù)水平荷載,對(duì)柱連接模型進(jìn)行加載破壞試驗(yàn)。觀察了試件的受力過程及破壞形態(tài),得到了柱端荷載-位移滯回曲線和骨架曲線,分析了試件類型、軸壓比對(duì)試件的破壞模式、滯回性能、剛度、承載力、延性、耗能能力等的影響。結(jié)果表明:仿古建筑方鋼管柱與圓鋼管柱連接的破壞模式主要是方鋼管柱翼緣根部周圍焊縫的開裂;滯回曲線飽滿,剛度退化小,承載能力高,破壞時(shí)試件的位移延性系數(shù)介于4.17~4.97,等效黏滯阻尼系數(shù)介于0.445~0.537,具有很好的耗能能力及抗震性能。在試驗(yàn)研究的基礎(chǔ)上,利用ABAQUS軟件對(duì)其受力性能進(jìn)行了非線性有限元分析,并與試驗(yàn)結(jié)果進(jìn)行了對(duì)比。兩者吻合較好。在此基礎(chǔ)上,研究了軸壓比、鋼材屈服強(qiáng)度、方鋼管板件寬厚比等參數(shù)對(duì)柱連接的承載力、剛度和延性的影響規(guī)律。結(jié)果表明:在一定范圍內(nèi),隨軸壓比的增大,試件的水平承載力和剛度降低,位移延性呈升高的趨勢;隨鋼材屈服強(qiáng)度的增加,試件的水平承載力和剛度提高,位移延性呈降低的趨勢;隨方鋼管板件寬厚比的增加,試件的水平承載力和剛度降低,位移延性呈升高的趨勢。研究結(jié)果可為鋼結(jié)構(gòu)仿古建筑方鋼管柱與圓鋼管柱連接的抗震設(shè)計(jì)及工程運(yùn)用提供參考。
[Abstract]:The archaic architecture inherits the beautiful and magnificent features of Chinese ancient architecture, and is more and more widely used in practical engineering. Column is an important part of ancient architecture, and its shape is consistent with that of traditional ancient architecture. In the connection between square steel pipe column and round steel pipe string in ancient buildings, the lower column adopts different cross-section forms. Its connection structure and force transfer mode are very different from those of conventional steel structure joints in modern buildings. So far, there is a lack of systematic experimental research and theoretical analysis. At present, there is no design specification for this kind of components to be used for reference. In order to study the failure mode and seismic behavior of the connection between square steel pipe column and round steel pipe column in ancient building, four column connection models with scale of 1 / 1.5 were designed and made. The vertical load of constant axial compression ratio and the low cycle reciprocating horizontal load were applied. The loading failure test was carried out on the column connection model. The load-displacement hysteretic curve and skeleton curve at the end of the column are obtained, and the failure mode, hysteretic property, stiffness, bearing capacity, ductility of the specimen are analyzed, and the failure mode, hysteretic property, stiffness, bearing capacity and ductility of the specimen are analyzed. The influence of energy dissipation, etc. The results show that the failure mode of the connection between square steel pipe column and round steel pipe column in ancient building is mainly the cracking of weld around the flange of square steel pipe column, the hysteretic curve is full, the stiffness is small, the bearing capacity is high. The displacement ductility coefficient and equivalent viscous damping coefficient of the specimens are between 4.17 ~ 4.97 and 0.445 ~ 0.537 respectively, which have good energy dissipation capacity and seismic performance. On the basis of the experimental research, the nonlinear finite element analysis of the mechanical properties of Abaqus is carried out, and the results are compared with the experimental results. The two match well. On this basis, the influence of axial compression ratio, steel yield strength and width to thickness ratio of square steel tube on the bearing capacity, stiffness and ductility of column connections are studied. The results show that the horizontal bearing capacity and stiffness decrease, the displacement ductility increases with the increase of axial compression ratio, and the horizontal bearing capacity and stiffness increase with the increase of steel yield strength. With the increase of the ratio of width to thickness, the horizontal bearing capacity and stiffness decrease, and the displacement ductility increases. The results can provide reference for seismic design and engineering application of connection between square steel pipe column and round steel pipe column of steel structure.
【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】：2015
【分類號(hào)】：TU352.11;TU392.3

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本文編號(hào)：2012808