【摘要】：為了深入了解再生混凝土矮墻在地震作用下的承載能力、變形性能、傳力機(jī)制與破壞模式等，本文對(duì)具有不同軸壓比、不同配筋參數(shù)的6片再生混凝土矮墻進(jìn)行了低周反復(fù)荷載作用下的試驗(yàn)研究，得出了6片再生混凝土矮墻試件的破壞形態(tài)、荷載-側(cè)移角滯回曲線、特征荷載與特征位移、骨架曲線與剛度退化曲線、各加載階段的豎向鋼筋應(yīng)變與水平鋼筋應(yīng)變，闡述了軸壓比、豎向分布筋配筋率、水平分布筋配筋率、暗柱、插筋等參數(shù)對(duì)再生混凝土矮墻性能的影響，并討論了我國(guó)設(shè)計(jì)規(guī)范中矮墻“強(qiáng)剪弱彎”的設(shè)計(jì)方法等。最終基于試驗(yàn)結(jié)果提出了彎曲-斜壓復(fù)合傳力機(jī)制與計(jì)算模型，很好地解釋了矮墻的承載與傳力特性，可準(zhǔn)確計(jì)算發(fā)生彎曲-斜壓復(fù)合型破壞的矮墻試件的極限承載力。此外，對(duì)再生混凝土矮墻試件的變形性能進(jìn)行了分析，，得出了矮墻試件中彎曲變形、剪切變形對(duì)試件總變形的貢獻(xiàn)及在整個(gè)加載過程中的變化規(guī)律。
[Abstract]:In order to deeply understand the bearing capacity, deformation performance, force transfer mechanism and failure mode of recycled concrete short wall under earthquake, this paper has different axial compression ratio. Six recycled concrete dwarf walls with different reinforcement parameters were tested under low cyclic loading. The failure patterns, load-lateral angle hysteretic curves, characteristic loads and characteristic displacements of six recycled concrete short wall specimens were obtained. Skeleton curve and stiffness degradation curve, vertical steel bar strain and horizontal steel bar strain at each loading stage, elaborated axial compression ratio, vertical distribution reinforcement ratio, horizontal distribution reinforcement ratio, dark column, The influence of the parameters such as reinforcements on the performance of recycled concrete dwarf wall is discussed. The design method of "strong shear and weak bending" of the short wall in the design code of our country is discussed. Finally, based on the experimental results, the bending-baroclinic composite force transfer mechanism and calculation model are proposed, which can explain the bearing and force transfer characteristics of the short wall, and can accurately calculate the ultimate bearing capacity of the short wall specimen with bending-baroclinic composite failure. In addition, the deformation behavior of the recycled concrete low wall specimen is analyzed, and the contribution of bending deformation and shear deformation to the total deformation of the test piece and the changing rule in the whole loading process are obtained.
【學(xué)位授予單位】：中國(guó)礦業(yè)大學(xué)（北京）
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU37;TU312

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 彭有開;吳徽;高全臣;;再生混凝土長(zhǎng)柱的抗震性能試驗(yàn)研究[J];東南大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年03期

2 曹萬林;張勇波;董宏英;周中一;;再生混凝土結(jié)構(gòu)抗震性能研究進(jìn)展與評(píng)述[J];地震工程與工程振動(dòng);2013年06期

本文編號(hào)：2427878