- 摘 要
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（1 揚(yáng)州大學(xué)工程設(shè)計(jì)研究院， 揚(yáng)州 225000； 2 揚(yáng)州大學(xué)建筑科學(xué)與工程學(xué)院， 揚(yáng)州 225127）
［摘要］設(shè)計(jì)制作了9根梁板疊合構(gòu)件和3根梁板整澆構(gòu)件進(jìn)行靜力受剪性能試驗(yàn)，研究試件的開裂荷載、裂縫形態(tài)和發(fā)展規(guī)律、極限荷載及破壞形態(tài)等。結(jié)果表明：支座與加載點(diǎn)連線中部位置上的主要受力箍筋發(fā)生屈服，最終腹剪斜裂縫兩側(cè)混凝土產(chǎn)生明顯錯動，構(gòu)件破壞，且均呈剪壓破壞形態(tài)；疊合構(gòu)件在最端部傳剪器處會產(chǎn)生斜向支座方向的裂縫；疊合面上從構(gòu)件端部至加載點(diǎn)范圍產(chǎn)生水平裂縫；剪跨比對受剪承載力的影響大，箍筋間距對發(fā)生剪壓、斜拉破壞的構(gòu)件受剪承載力的影響較發(fā)生斜壓破壞的試件明顯。
［關(guān)鍵詞］梁板疊合構(gòu)件； 傳剪器； 受剪性能； 試驗(yàn)研究
中圖分類號：TU375-1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)24-0076-07
Experimental research on the mechanical behavior on diagonal sections of beam-slab composite component
Zhou Kaifu1, 2, Wei Xin2, Ge Wenjie2, Cao Dafu2
(1 Engineering Design and Research Institute， Yangzhou University, Yangzhou 225000, China; 2 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China)
Abstract:Static shear performance experiment of 9 RC beam-slab composite components and 3 beam-slab casting components were carried out, cracking load, cracking shape and developing rule, ultimate load and failure mode were studied. The results show that the stirrup stress on the middle of the loading point-support line yields, and the concrete of the two sides of the web shearing diagonal crack incurs obvious diastrophism, the composite component failures and presents shear compression failure; the diagonal crack developes from the end of the shear connector to the support; horizontal crack incurs in the combined interface from the end of the component to the point of loading point; the effect of the shear span ratio on shear bearing capacity is significant, and the effect of the stirrup spacing to shear bearing capacity with shear compression failure, diagonal tension failure is more obvious than that of specimen with diagonal compression failure.
Keywords:beam-slab composite component; shear connector; shear behavior; experimental study
*國家自然科學(xué)基金資助項(xiàng)目(51578478，51508495)。
通訊作者：曹大富，碩士，教授，碩士生導(dǎo)師，Email:dfcao@yzu.edu.cn。
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