结构工程师
結構工程師
결구공정사
Structural Engineers
2015年
4期
38-46
,共9页
钢筋混凝土剪力墙%超高韧性水泥基复合材料(UHTCC)%应变硬化%向量式有限元(VFIFE)%非线性分析
鋼觔混凝土剪力牆%超高韌性水泥基複閤材料(UHTCC)%應變硬化%嚮量式有限元(VFIFE)%非線性分析
강근혼응토전력장%초고인성수니기복합재료(UHTCC)%응변경화%향량식유한원(VFIFE)%비선성분석
shear wall%ultra-high toughness cementitous composites (UHTCC)%tensile strain hardening%vector form intrinsic finite element(VFIFE)%nonlinear analysis
超高韧性水泥基复合材料(UHTCC)具有抗拉性能好、裂缝宽度可控、耐久性强以及受拉应变硬化特征等优点,克服了传统水泥基复合材料的易开裂破坏的缺点,适合于受拉混凝土构件或裂缝要求高的混凝土构件。剪力墙是一种抗震性能良好的结构构件,但其边缘为拉压破坏的易损区域,采用超高韧性混凝土材料替换传统混凝土可望获得更优异的抗震性能。基于求解结构非线性行为的向量式有限元(VFIFE)方法,采用自开发程序模拟分析超高韧性水泥基复合材料剪力墙拟静力推覆全过程。模拟结果表明,超高韧性水泥基复合材料具有优异的抗拉性能及韧性性能,可以有效改善剪力墙开裂后的工作性能,从而提高构件的抗震性能,因此具有重要的工程应用价值。
超高韌性水泥基複閤材料(UHTCC)具有抗拉性能好、裂縫寬度可控、耐久性彊以及受拉應變硬化特徵等優點,剋服瞭傳統水泥基複閤材料的易開裂破壞的缺點,適閤于受拉混凝土構件或裂縫要求高的混凝土構件。剪力牆是一種抗震性能良好的結構構件,但其邊緣為拉壓破壞的易損區域,採用超高韌性混凝土材料替換傳統混凝土可望穫得更優異的抗震性能。基于求解結構非線性行為的嚮量式有限元(VFIFE)方法,採用自開髮程序模擬分析超高韌性水泥基複閤材料剪力牆擬靜力推覆全過程。模擬結果錶明,超高韌性水泥基複閤材料具有優異的抗拉性能及韌性性能,可以有效改善剪力牆開裂後的工作性能,從而提高構件的抗震性能,因此具有重要的工程應用價值。
초고인성수니기복합재료(UHTCC)구유항랍성능호、렬봉관도가공、내구성강이급수랍응변경화특정등우점,극복료전통수니기복합재료적역개렬파배적결점,괄합우수랍혼응토구건혹렬봉요구고적혼응토구건。전력장시일충항진성능량호적결구구건,단기변연위랍압파배적역손구역,채용초고인성혼응토재료체환전통혼응토가망획득경우이적항진성능。기우구해결구비선성행위적향량식유한원(VFIFE)방법,채용자개발정서모의분석초고인성수니기복합재료전력장의정력추복전과정。모의결과표명,초고인성수니기복합재료구유우이적항랍성능급인성성능,가이유효개선전력장개렬후적공작성능,종이제고구건적항진성능,인차구유중요적공정응용개치。
Ultra high toughness cementitious composite (UHTCC)has good tensile property,crack width control property, strong durability, tensile strain hardening and other advantages and overcomes the disadvantages that traditional cementitious composite material is easy to crack,is suitable for the tensile concrete members or high crack control concrete members.Shear wall is a good seismic performance structures,while its edges are vulnerable area of tensile and compressive failure.Using ultra high toughness cementitious composite to replace the traditional concrete can obtain more excellent seismic performance.In this paper,based on the vector form intrinsic finite element(VFIFE)method for solving nonlinear behavior of structures,the whole process of the UHTCC shear walls′are simulated by the self-development programs.The simulation results show that,the ultra-high toughness cementitious composite shear walls has excellent seismic performance and toughness,improves the ductility and lateral bearing capacity of shear walls significantly, which has important application value in engineering.