本文選題：型鋼混凝土柱 + 分散型鋼混凝土柱�。� 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2017年01期

【摘要】：在JGJ 138—2001《型鋼混凝土組合結(jié)構(gòu)技術(shù)規(guī)程》中,型鋼混凝土柱的正截面承載力需根據(jù)平截面假定進(jìn)行計(jì)算,但該規(guī)范并沒有明確給出當(dāng)平截面假定不滿足時型鋼混凝土柱的承載力計(jì)算方法。為此,提出抗剪連接系數(shù)的概念,用于描述型鋼混凝土柱中型鋼與混凝土之間的相對界面抗剪能力,綜合平截面假定和疊加原理,得到在部分抗剪連接條件下普通型鋼混凝土(SRC)柱和分散型鋼混凝土(ISRC)柱的正截面承載力與抗剪連接系數(shù)之間的定量關(guān)系,進(jìn)而提出SRC柱和ISRC柱的正截面承載力設(shè)計(jì)簡化方法。計(jì)算結(jié)果表明:當(dāng)軸壓比相同時,SRC柱和ISRC柱的受彎承載力隨其抗剪連接系數(shù)的增大而增大;軸壓比越大,抗剪連接系數(shù)對組合柱的受彎承載力的影響越小;與SRC柱相比,抗剪連接系數(shù)對ISRC柱的受彎承載力影響更加顯著。試驗(yàn)結(jié)果與計(jì)算結(jié)果的對比表明,采用所提出的方法可以較準(zhǔn)確地計(jì)算ISRC柱的壓彎承載力,計(jì)算結(jié)果具有一定的安全余度。
[Abstract]:In JGJ 138-2001, the normal section bearing capacity of steel reinforced concrete columns should be calculated according to the assumption of plane section. However, the method of calculating the bearing capacity of SRC columns when the assumption of plane section is not satisfied is not clearly given in the code. Therefore, the concept of shear connection coefficient is proposed, which is used to describe the relative interfacial shear resistance between steel and concrete in steel reinforced concrete columns, and to synthesize the assumption of plane section and the principle of superposition. The quantitative relationship between normal section bearing capacity and shear connection coefficient of normal SRC column and scattered SRC column under partial shear connection is obtained, and a simplified design method of normal section bearing capacity of SRC column and ISRC column is put forward. The results show that when the axial compression ratio is the same, the flexural capacity of SRC column and ISRC column increases with the increase of the shear connection coefficient, and the greater the axial compression ratio, the less the influence of the shear connection coefficient on the flexural capacity of the composite column, compared with the SRC column. The influence of shear connection coefficient on the flexural capacity of ISRC columns is more significant. The comparison between the experimental results and the calculated results shows that the proposed method can accurately calculate the compressive and bending bearing capacity of ISRC columns, and the calculated results have a certain safety margin.
【作者單位】： 中國建筑科學(xué)研究院;清華大學(xué)土木工程系;
【分類號】：TU398.9

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