- 摘 要
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（1 廣西科技大學土木建筑工程學院， 柳州 545006； 2 成都理工大學工程技術(shù)學院土木工程系，樂山 614000; 3 廣西榮泰建筑設計有限責任公司， 柳州 545007）
［摘要］為研究不同污泥摻量下燒結(jié)污泥頁巖多孔磚砌體受壓變形性能、抗壓強度、峰值應變和彈性模量，建立本構(gòu)關(guān)系，對用兩種水泥砂漿和四種污泥摻量的燒結(jié)污泥頁巖多孔磚砌筑的36個試件進行軸壓試驗，實測了試件的應力-應變曲線、抗壓強度、峰值應變和彈性模量。結(jié)果表明，燒結(jié)污泥頁巖多孔磚砌體抗壓強度和彈性模量隨污泥摻量的增加而逐漸降低，并低于普通頁巖燒結(jié)多孔磚，峰值應變與普通頁巖燒結(jié)多孔磚相同。通過分析砌體受壓破壞的過程和實測應力-應變曲線，結(jié)合砌體的力學損傷，將砌體損傷演化方程考慮為一個含初始損傷值的損傷函數(shù)，以此建立了砌體受壓的本構(gòu)關(guān)系模型。該模型所確定的燒結(jié)污泥多孔磚砌體的本構(gòu)關(guān)系曲線不僅與試驗數(shù)據(jù)吻合，還克服了已有本構(gòu)關(guān)系的不足。對于不同材料的砌體，結(jié)合抗壓試驗確定模型中的相關(guān)參數(shù)，可得到相應的本構(gòu)關(guān)系表達式。
［關(guān)鍵詞］本構(gòu)關(guān)系； 損傷； 抗壓強度； 彈性模量； 砌體； 污泥； 燒結(jié)多孔磚
中圖分類號：TU522文獻標識碼：A文章編號：1002-848X(2017)07-0080-06
Constitutive relation of sludge-shale sintered perforated brick masonry
Huang Bangbiao1, Liao Tianquan1, Liao Tianyuan2, Huang Bingzhang3, Li Zhi1, Pan Jiayu1, Qi Weiwei1
(1 College of Civil and Architectural Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China；2 Department of Civil Engineering, The Engineering & College of Chengdu University of Technology, Leshan 614000, China；3 Guangxi Rongtai Architectural Design Limited Liability Company，Liuzhou 545007， China)
Abstract:For the study of the compressive deformation performance,compressive strength,the peak strain,and the modulus of elasticity of sludge-shale sintered perforated brick masonry with different mixing amounts of sludge, and to establish the constitutive relation,using two kinds of cement mortar and four kinds of sludge content of sludge-shale sintered perforated brick made 36 masonry specimens,after completed the axial compression test of these specimens,get the stress-strain curves, compressive strength, peak strain and elastic modulus of the specimens.The results show that the compressive strength and modulus of elastic were gradually reduced along with the increase of sludge content,and the value lower than normal shale sintered porous brick,but it′s peak strain value the same as the normal shale sintered porous brick masonry. By analyzing the process of masonry compression failure and the measured stress-strain curve, combined with the mechanical damage of the masonry, the damage evolution equation of the masonry was considered as a damage function with initial damage value, established a constitutive model of masonry compression.The constitutive relation of sludge-shale sintered perforated brick masonry was determined by the model,the results showed that not only the constitutive relation curve coincides with the test data,but also overcome the deficiency of the existing constitutive relatio. For the masonry with different materials, the relevant parameters in the model were determined combined with the compression test, to obtain the corresponding constitutive relation expression.
Keywords:constitutive relation; damage; compressive strength; modulus of elasticity; masonry; sludge; sintered perforated brick
*廣西重點研發(fā)計劃項目(桂科攻AB16380341)。
通訊作者：廖天權(quán)，碩士研究生，Email: 2247123294@qq.com。
