本文選題：型鋼混凝土偏拉構(gòu)件 + 工字型鋼��； 參考：《建筑結(jié)構(gòu)學(xué)報》2017年02期

【摘要】：利用OpenSEES有限元程序,研究了軸拉比、型鋼強(qiáng)度、縱筋強(qiáng)度、混凝土強(qiáng)度、型鋼翼緣面積、型鋼腹板厚度、型鋼腹板高度、縱筋面積以及截面尺寸等因素對工字型鋼混凝土偏心受拉構(gòu)件正截面承載力的影響。結(jié)果表明:截面中型鋼翼緣面積、型鋼腹板高度、型鋼腹板寬度、縱筋配筋率以及截面高度對偏拉構(gòu)件正截面承載力的影響較大;型鋼強(qiáng)度、縱筋強(qiáng)度對承載力的影響相對較小;混凝土強(qiáng)度、構(gòu)件截面寬度對承載力基本沒有影響。將JGJ 138—2012《組合結(jié)構(gòu)設(shè)計規(guī)范》中型鋼混凝土偏拉構(gòu)件正截面承載力計算公式的計算結(jié)果與OpenSEES非線性有限元的計算結(jié)果進(jìn)行了對比,提出了對規(guī)范公式的修正建議,并利用有限元模擬結(jié)果對修正后的計算公式進(jìn)行了檢驗,二者吻合良好。
[Abstract]:OpenSEES finite element program is used to study the axial ratio, section strength, longitudinal reinforcement strength, concrete strength, section steel flange area, section steel web thickness, section steel web height, etc. The influence of longitudinal reinforcement area and section size on the normal section bearing capacity of I-shaped steel concrete eccentrically tensile members. The results show that the flange area of section steel, the height of web plate, the width of web plate, the reinforcement ratio of longitudinal reinforcement and the height of section have great influence on the bearing capacity of normal section of eccentric tensile member. The influence of longitudinal reinforcement strength on the bearing capacity is relatively small, while the strength of concrete and the section width of members have no effect on the bearing capacity. The calculation results of normal section bearing capacity of SRC eccentric tensile members in JGJ 138-2012 Code for Composite structure Design are compared with those of OpenSEES nonlinear finite element method, and some suggestions for revising the formula are put forward. The results of finite element simulation are used to test the modified formula and the results are in good agreement with each other.
【作者單位】： 重慶大學(xué)山地城鎮(zhèn)建設(shè)與新技術(shù)教育部重點實驗室;四川省建筑設(shè)計研究院;
【基金】：國家自然科學(xué)基金項目(51378519)
【分類號】：TU398.9

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