- 摘 要
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（1 西南交通大學(xué)土木工程學(xué)院， 成都 610031； 2 重慶交通大學(xué)土木建筑學(xué)院，重慶 400074）
［摘要］針對混凝土結(jié)構(gòu)中局部區(qū)域拉應(yīng)力過大的問題，提出了一種能有效提高抗裂性能和阻止裂縫發(fā)展的帶肋鋼板-混凝土組合構(gòu)件（RSPC），試驗(yàn)設(shè)計(jì)制作了5片帶肋鋼板-混凝土組合構(gòu)件（RSPC）、1片普通混凝土構(gòu)件（RC）及1片常規(guī)粘貼鋼板混凝土構(gòu)件（RCS）。試驗(yàn)結(jié)果表明：帶肋鋼板-混凝土組合構(gòu)件抗裂性能較普通鋼筋混凝土構(gòu)件和常規(guī)粘貼鋼板混凝土構(gòu)件大得多，梁下緣混凝土的極限拉應(yīng)變較普通鋼筋混凝土大得多。根據(jù)普通鋼筋混凝土受彎構(gòu)件的抗裂彎矩的計(jì)算原理，提出帶肋鋼板混凝土組合構(gòu)件的抗裂彎矩計(jì)算公式。
［關(guān)鍵詞］橋梁工程; 抗裂; 試驗(yàn)研究; 帶肋鋼板-混凝土組合構(gòu)件; 增強(qiáng)機(jī)理
中圖分類號：U441，TU398 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)09-0029-05
Experimental study on the cracking resistance performance of ribbed steel plate-concrete composite components
Xu Yong1,2, Zhou Zhixiang2
(1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2 School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China)
Abstract: Considering oversized tensile stress in the partial region of the concrete structure, a ribbed steel plate-concrete composite component (RSPC) was proposed to improve crack resistance capacity and limit crack development. Five ribbed steel plate-concrete composite components(RSPC), one normal reinforced concrete component (RC) and one epoxy-bonded steel plate-concrete component (RCS) were made in test. The test results indicate that the cracking load for the RSPC is higher than the RC and the RCS. The ultimate tensile strain of the bottom of the RSPC is higher than the RC. The calculation formula of crack resistance moment of the RSPC was proposed according to the calculation principle of crack resistance moment capacity of the RC flexural members.
Keywords: bridge engineering; crack resistance; experimental study; ribbed steel plate-concrete composite component; reinforcement mechanism
*國家自然科學(xué)基金資助項(xiàng)目（51078373），交通部西部交通建設(shè)科技項(xiàng)目（20113188141480），重慶市科委科技項(xiàng)目（cstc2012gg-yyjs30001）。
作者簡介：徐勇，博士，副教授，Email: xuyong6266@163.com。
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