再生混凝土柱受压性能试验研究
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摘要
通过对12根不同再生骨料取代率配置500 MPa级钢筋的混凝土柱受力性能进行试验,分析再生混凝土柱的受压构件破坏形态、构件侧向挠度曲线、混凝土应变、钢筋应变等特征。将试验结果与按规范确定的承载力进行对比。研究结果表明,再生混凝土柱的破坏过程、形态、跨中侧向挠度曲线、混凝土应变、钢筋应变与普通混凝土区别不明显,取代率对柱的承载力影响不大。GB 50010—2010《混凝土结构设计规范》规定计算的受压承载力与试验结果符合良好,500 MPa级钢筋在再生混凝土柱中与混凝土协同工作性能较好,其抗拉强度和抗压强度均能得到充分发挥。在受压承载力计算中,500 MPa级钢筋的抗拉和抗压强度的设计值按GB 50010—2010规定取值均有较大安全储备。
In this paper,the compression behaviors of 12 concrete columns with different replacement percentages of recycled coarse aggregate and 500 MPa grade reinforcement were experimentally investigated.Failure modes,component lateral deflection curve,concrete strain,steel strain and other features of recycled concrete columns were analyzed.The bearing capacity of experiment was compared with code for design of concrete structures.The results show that the failure process and mode,cross-lateral deflection curves,concrete strain,steel strain of the recycled concrete column and ordinary concrete are not different significantly,and the replacement rate has little effect on the bearing capacity of column.The compression bearing capacity calculated by code for Design of Concrete Structures(GB 50010—2010) is in good agreement with the experimental results.500 MPa grade reinforcement in recycled concrete columns work with better performance,and its tensile and compressive strength can be fully realized.In the compression bearing capacity calculations,tensile and compressive strength design values of 500 MPa grade reinforcement in GB 50010—2010 values have provided a greater safety margin.
In this paper,the compression behaviors of 12 concrete columns with different replacement percentages of recycled coarse aggregate and 500 MPa grade reinforcement were experimentally investigated.Failure modes,component lateral deflection curve,concrete strain,steel strain and other features of recycled concrete columns were analyzed.The bearing capacity of experiment was compared with code for design of concrete structures.The results show that the failure process and mode,cross-lateral deflection curves,concrete strain,steel strain of the recycled concrete column and ordinary concrete are not different significantly,and the replacement rate has little effect on the bearing capacity of column.The compression bearing capacity calculated by code for Design of Concrete Structures(GB 50010—2010) is in good agreement with the experimental results.500 MPa grade reinforcement in recycled concrete columns work with better performance,and its tensile and compressive strength can be fully realized.In the compression bearing capacity calculations,tensile and compressive strength design values of 500 MPa grade reinforcement in GB 50010—2010 values have provided a greater safety margin.
引文
[1]Andrzej B A,Alina T K.Comparative Tests of Beams and Columns Made of Recycled Aggregate Concrete and Natural Aggregate Concrete[J].Journal of Advanced Concrete Technology,2007,5(2):259-273.
[2]Poon C S,Kou S C,Lam L.Influence of Recycled Aggregate on Slump and Building of Fresh Concrete[J].Materials and Structures,2007,40(9):981-988.
[3]刘立新,张艳丽,李千,等.500MPa钢筋混凝土短柱轴压下受力性能研究[J].郑州大学学报:工学版,2006,27(4):1-5.
[4]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2006.
[5]肖建庄,李佳彬,兰阳,等.再生混凝土技术研究最新进展与评述[J].混凝土,2003(10):17-20,57.
[6]吴波,刘伟,刘琼祥,等.薄壁钢管再生混合短柱轴压性能试验研究[J].建筑结构学报,2010,31(8):22-28.
[7]王思源,朱平华,姚荣,等.再生混凝土柱强剪弱弯设计可靠度分析[J].南京理工大学学报:自然科学版,2010,34(6):814-817.
[8]尹海鹏,曹万林,张亚齐,等.不同再生骨料取代率的再生混凝土柱抗震试验研究[J].世界地震工程,2010,26(1):57-63.
[9]张卫东,王振波.钢骨再生混凝土偏压短柱承载力试验研究[J].低温建筑技术,2010,32(10):23-25.
[10]张亚齐,曹万林,张建伟,等.再生混凝土短柱抗震性能试验研究[J].震灾防御技术,2010,5(1):89-98.
[11]GB50010—2010混凝土结构设计规范[S].
[12]GB50152—92混凝土结构试验方法标准[S].
[13]梁兴文,王社良,李晓文.混凝土结构设计原理[M].北京:科学出版社,2003:164-198.
[14]过镇海.混凝土的强度和本构关系-原理与应用[M].北京:中国建筑工业出版社,2004:119-134.
[2]Poon C S,Kou S C,Lam L.Influence of Recycled Aggregate on Slump and Building of Fresh Concrete[J].Materials and Structures,2007,40(9):981-988.
[3]刘立新,张艳丽,李千,等.500MPa钢筋混凝土短柱轴压下受力性能研究[J].郑州大学学报:工学版,2006,27(4):1-5.
[4]肖建庄.再生混凝土[M].北京:中国建筑工业出版社,2006.
[5]肖建庄,李佳彬,兰阳,等.再生混凝土技术研究最新进展与评述[J].混凝土,2003(10):17-20,57.
[6]吴波,刘伟,刘琼祥,等.薄壁钢管再生混合短柱轴压性能试验研究[J].建筑结构学报,2010,31(8):22-28.
[7]王思源,朱平华,姚荣,等.再生混凝土柱强剪弱弯设计可靠度分析[J].南京理工大学学报:自然科学版,2010,34(6):814-817.
[8]尹海鹏,曹万林,张亚齐,等.不同再生骨料取代率的再生混凝土柱抗震试验研究[J].世界地震工程,2010,26(1):57-63.
[9]张卫东,王振波.钢骨再生混凝土偏压短柱承载力试验研究[J].低温建筑技术,2010,32(10):23-25.
[10]张亚齐,曹万林,张建伟,等.再生混凝土短柱抗震性能试验研究[J].震灾防御技术,2010,5(1):89-98.
[11]GB50010—2010混凝土结构设计规范[S].
[12]GB50152—92混凝土结构试验方法标准[S].
[13]梁兴文,王社良,李晓文.混凝土结构设计原理[M].北京:科学出版社,2003:164-198.
[14]过镇海.混凝土的强度和本构关系-原理与应用[M].北京:中国建筑工业出版社,2004:119-134.
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