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張向?qū)愖谄?，鄭述芳，蘇益聲，梁榮耀

( 廣西大學(xué)土木建筑工程學(xué)院， 南寧 530004)

［摘要］為了研究型鋼混凝土(SRC)T形柱斜截面抗剪承載性能，設(shè)計了4個試件進(jìn)行靜力單調(diào)加載試驗(yàn)，考慮了剪跨比、軸壓比、配鋼形式、翼緣尺寸4個變化參數(shù)，通過試驗(yàn)觀察了試件的受力全過程和破壞形態(tài)。根據(jù)實(shí)測數(shù)據(jù)，給出了混凝土應(yīng)變沿截面高度的分布情況以及荷載應(yīng)變、荷載撓度等重要關(guān)系曲線；并分析了各變化參數(shù)對抗剪承載力的影響，提出了承載力計算公式。研究結(jié)果表明：型鋼混凝土T形柱受力過程中截面應(yīng)變基本符合平截面假定；剪跨比、軸壓比、配鋼形式、翼緣尺寸等參數(shù)對其抗剪強(qiáng)度有顯著影響；基于疊加法的抗剪強(qiáng)度計算公式可用于其斜截面極限承載力計算。

［關(guān)鍵詞］型鋼混凝土；T形柱；受剪性能；強(qiáng)度計算

中圖分類號：TU398        文獻(xiàn)標(biāo)識碼：A        文章編號：1002-848X(2013)01-0054-05

 

Zhang Xianggang, Chen Zongping, Zheng Shufang, Su Yisheng, Liang Rongyao

(College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

 

Abstract: In order to study the shear bearing capacity of inclined section in T-shaped steel reinforced concrete(SRC) columns, 4 specimens with different shear span ratios, axial compression ratios, steel form and flange dimension were designed and produced to carry out monotonic static shear loading test. The whole loading process and failure pattern were watched and the curves of concrete strain distribution along cross section height, load-strain and load-deflection were drawn based on the measured data. The impact of parameters on the shear capacity was analyzed, and the formula for calculating capacity was proposed. It is shown that average strain of T-shaped section conforms to plane section assumption. Shear span ratios, axial compression ratios, steel form and flange dimension have significant effect on the shear strength. The calculation formula of shear strength can be used to calculate ultimate bearing capacity of inclined section.

Keywords: steel reinforced concrete; T-shaped column; shear performance; strength calculation

*國家自然科學(xué)基金（50908057），廣西科學(xué)基金（桂科青0832004）

通訊作者：陳宗平，博士，教授，Email:zpchen@gxu.edu.cn

 

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