改性土体材料单轴受压本构关系研究
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摘要
生土材料的本构关系是分析生土建筑抗震性能及倒塌机理的重要手段之一,也是对生土建筑结构进行数值模拟的前提.通过强度试验确定粗砂及麦秸秆这两种改性材料的最优掺量后,对同尺寸的素土试块及掺和了粗砂和麦秸秆的生土材料试块进行了单轴压缩试验,得到应力-应变曲线后,用有理式和混凝土规范提出的单轴本构方程分别去拟合实验实测点.建立了改性生土材料单轴本构方程.
Researching constitutive relation of raw-soil materials is not noly an important method to analyze its seismic performance and collapse mechanism,but also the premise of numerical simulation.The optimum additives(coarse and straw) was confirmed by strength test.Three groups of samples,namely the raw-soil cubics,coarse-cubics and straw-cubics,were tested by uniaxial compression,then,the stress——strain curves was fitted by the rational function and the constitutive equation given by Code for design of concrete structures.Uniaxial constitutive equations of the modified raw-soil materials was proposed.
Researching constitutive relation of raw-soil materials is not noly an important method to analyze its seismic performance and collapse mechanism,but also the premise of numerical simulation.The optimum additives(coarse and straw) was confirmed by strength test.Three groups of samples,namely the raw-soil cubics,coarse-cubics and straw-cubics,were tested by uniaxial compression,then,the stress——strain curves was fitted by the rational function and the constitutive equation given by Code for design of concrete structures.Uniaxial constitutive equations of the modified raw-soil materials was proposed.
引文
[1]琳恩.伊丽莎白,卡萨德勒.亚当斯.新乡土建筑―当代天然建造方式[M].北京:机械工业出版社,2005,141-145.
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[3]阿肯江.托呼提,亓国庆,陈汉清.新疆南疆地区传统土坯房屋震害及抗震技术措施[J].工程抗震与加固造,2008,30(1):87-89.
[4]周铁钢,王庆霖,胡昕.新疆砖木结构民居抗震试验研究与对策[J].世界地震工程,2008,30(1):120-124.
[5]亓国庆.木柱梁―土坯组合墙体有线元数值分析[D].新疆大学,2007.
[6]Vargas J,Bariola J,Blondet M.Seismic strength of adobe masonry[J].Materials and Structures,1986,19(4):253-258
[7]Kouakou C H,Morel J C.Strength and elasto-plastic properties of non-industrial building materials manufactured withclay as a natural binder[J].Applied Clay Science,2009,44:27-34.
[8]江见鲸,陆新征,叶列平.钢筋混凝土有限元分析[M].北京:清华大学出版社,2005.
[9]梁咏宁,袁迎曙.硫酸盐腐蚀后混凝土单轴受压本构关系[J].哈尔滨工业大学学报,2008,40(4):532-535.
[10]GB50010-2002,混凝土结构设计规范[S].北京:建筑工业出版社,2002.
[2]葛学礼,王亚勇,朱立新.建筑抗震设防是减轻地震灾害的根本途径[J].工程抗震,2003,5(2):45-49.
[3]阿肯江.托呼提,亓国庆,陈汉清.新疆南疆地区传统土坯房屋震害及抗震技术措施[J].工程抗震与加固造,2008,30(1):87-89.
[4]周铁钢,王庆霖,胡昕.新疆砖木结构民居抗震试验研究与对策[J].世界地震工程,2008,30(1):120-124.
[5]亓国庆.木柱梁―土坯组合墙体有线元数值分析[D].新疆大学,2007.
[6]Vargas J,Bariola J,Blondet M.Seismic strength of adobe masonry[J].Materials and Structures,1986,19(4):253-258
[7]Kouakou C H,Morel J C.Strength and elasto-plastic properties of non-industrial building materials manufactured withclay as a natural binder[J].Applied Clay Science,2009,44:27-34.
[8]江见鲸,陆新征,叶列平.钢筋混凝土有限元分析[M].北京:清华大学出版社,2005.
[9]梁咏宁,袁迎曙.硫酸盐腐蚀后混凝土单轴受压本构关系[J].哈尔滨工业大学学报,2008,40(4):532-535.
[10]GB50010-2002,混凝土结构设计规范[S].北京:建筑工业出版社,2002.
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