本文選題：鋼骨混凝土柱 + 高含鋼率�。� 參考：《土木工程學(xué)報(bào)》2016年03期

【摘要】：在"鋼骨截面延展性對(duì)高含鋼率SRC柱靜力性能的影響研究"的基礎(chǔ)之上,該文通過(guò)一組含鋼率為15%的SRC壓彎構(gòu)件反復(fù)加載試驗(yàn),結(jié)合理論分析和有限元數(shù)值計(jì)算,研究了鋼骨截面延展性對(duì)高含鋼率SRC柱骨架曲線、滯回曲線、耗能能力和延性等抗震性能指標(biāo)的影響,并分析了鋼骨、鋼筋和混凝土相互作用的機(jī)理。研究表明:1構(gòu)件承載能力和耗能能力隨鋼骨截面延展性系數(shù)D提高而線性增加;2承載能力、耗能能力、延性和卸載剛度均隨鋼骨截面模量因子α的增大而顯著增大;承載能力隨約束混凝土因子β線性增加,但β對(duì)滯回曲線和變形能力的影響很小;3在加載后期,鋼骨翼緣的局部屈曲和混凝土壓潰退出工作是導(dǎo)致承載力下降的主要原因;構(gòu)件的后期承載力、延性和耗能主要依賴(lài)于鋼骨的貢獻(xiàn)。
[Abstract]:On the basis of "study on the influence of steel section ductility on static behavior of SRC column with high steel content", a group of SRC compression and bending members with steel content of 15% are subjected to repeated loading tests, combined with theoretical analysis and finite element numerical calculation. The influence of steel section ductility on the seismic performance of SRC column with high steel content is studied. The mechanism of the interaction between steel bone, steel bar and concrete is analyzed, including the seismic performance index such as skeleton curve, hysteretic curve, energy dissipation capacity and ductility. The results show that the load-carrying capacity and energy-dissipation capacity of the W1 member increase linearly with the increase of ductility coefficient D of the steel section, and the load capacity, energy dissipation capacity, ductility and unloading stiffness increase significantly with the increase of the modulus factor 偽 of the steel section. The bearing capacity increases linearly with confined concrete factor 尾, but the effect of 尾 on hysteretic curve and deformation capacity is very small. At the later stage of loading, the local buckling of steel flange and concrete collapsing are the main reasons for the decrease of bearing capacity. The later bearing capacity, ductility and energy dissipation of members mainly depend on the contribution of steel bone.
【作者單位】： 同濟(jì)大學(xué);華東建筑設(shè)計(jì)研究院有限公司;
【基金】：土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室自由探索課題(SLDRCE15-B-01) 國(guó)家自然科學(xué)基金(90815029)
【分類(lèi)號(hào)】：TU398.9

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本文編號(hào)：1791942