反復(fù)荷載作用下鋼筋與凍融損傷混凝土粘結(jié)性能的試驗研究
[Abstract]:In these areas, freeze-thaw damage is one of the important reasons for durability damage of structures. The bond-slip constitutive relationship between reinforcement and freeze-thaw damaged concrete under monotone and repeated loads is studied, which provides basic data for nonlinear analysis of members and can further improve the seismic performance evaluation theory of existing reinforced concrete structures. At the same time, it is of great theoretical significance and engineering value for disaster prevention and mitigation of concrete structure engineering. In this paper, the rapid freeze-thaw tests of C30, C40 and C50 reinforced concrete specimens with three strengths of 0 times, 100 times, 200 times and 300 times are carried out, and the relationship between the number of freeze-thaw cycles and the mass loss rate of concrete specimens is obtained. Then the bond-slip curves of steel bar and concrete specimens under monotone and cyclic loading are obtained under different strength and different freeze-thaw cycles. The relationship between the curve characteristics, the peak bond stress and the number of freeze-thaw cycles is analyzed. Based on the experimental data, the theoretical model of bond-slip constitutive relation of freeze-thaw damaged concrete under cyclic loading is established. The expression of six-segment constitutive relation is put forward, and the key parameters needed for the theoretical model and the method for finding the related parameters are further determined. The relationship between the key parameters and the number of freeze-thaw cycles is established.
【學位授予單位】:西安建筑科技大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TU375
【參考文獻】
相關(guān)期刊論文 前10條
1 鄭曉燕;吳勝興;;鋼筋混凝土粘結(jié)滑移本構(gòu)關(guān)系建立方法的研究[J];四川建筑科學研究;2006年01期
2 石開展;;關(guān)于混凝土結(jié)構(gòu)耐久性的探討[J];四川建筑科學研究;2006年04期
3 陳靜;劉西拉;黃良斌;;反復(fù)荷載下銹蝕鋼筋混凝土構(gòu)件粘結(jié)滑移模型[J];四川建筑科學研究;2010年03期
4 宋玉普,趙國藩;鋼筋與混凝土間的粘結(jié)滑移性能研究[J];大連工學院學報;1987年02期
5 冀曉東;宋玉普;;凍融循環(huán)作用后鋼筋與混凝土粘結(jié)性能試驗研究[J];大連理工大學學報;2008年02期
6 金芷生;朱萬福;龐同和;;鋼筋與混凝土粘結(jié)性能試驗研究[J];南京工學院學報;1985年02期
7 冀曉東;趙寧;宋玉普;;凍融循環(huán)作用后變形鋼筋與混凝土粘結(jié)性能退化研究[J];工業(yè)建筑;2010年01期
8 戴靠山,袁迎曙,楊廣;人工氣候加速銹蝕后鋼筋混凝土粘結(jié)性能試驗研究[J];混凝土;2004年11期
9 李輝,張宏鵬;引嫩橋樁混凝土凍融剝蝕處理措施[J];黑龍江水利科技;2005年05期
10 杜鋒;肖建莊;高向玲;;鋼筋與混凝土間粘結(jié)試驗方法研究[J];結(jié)構(gòu)工程師;2006年02期
相關(guān)博士學位論文 前1條
1 肖前慧;凍融環(huán)境多因素耦合作用混凝土結(jié)構(gòu)耐久性研究[D];西安建筑科技大學;2010年
本文編號:2472814
本文鏈接:http://sikaile.net/kejilunwen/sgjslw/2472814.html