超声法在震后新浇混凝土受压破坏性能研究中的应用
|
摘要
为了研究非破损检测方法中的超声法对震后新混凝土进行受压破坏性能进行检测时,其声参数变化规律,分别制作了强度等级为C30和C50,试件尺寸为100 mm×100 mm×100 mm和100 mm×100 mm×300 mm两种规格的混凝土试块未震动与震动各30组,在进行抗压强度试验和静力受压弹性模量试验时采用超声仪器进行同步测试,得到了震后新浇注混凝土受压破坏过程的超声参数变化情况及受压破坏规律,并且与未震动混凝土进行了对比。试验结果表明,无论震动与未震动混凝土采用超声法测试的声参数变化情况与实际混凝土受压破坏荷载-变形关系曲线的各阶段基本吻合,遵循相同的破坏规律。
In order to research the variation of the acoustic parameters utilizing ultrasonic method to detect performance of compression-destroying of the fresh concrete after shake by the simulation of seismic station,the test includes making concrete sample,uniaxial compression strength(UCS) testing,elastic modulus test,and ultrasonic wave measurement.The results demonstrat that the acoustic parameters variation of ultrasonic method of shaken concrete agrees basically with that of the unshanken one and the actual stress-strain curve of concrete compression-destroying of all stages follows the same failure law.
In order to research the variation of the acoustic parameters utilizing ultrasonic method to detect performance of compression-destroying of the fresh concrete after shake by the simulation of seismic station,the test includes making concrete sample,uniaxial compression strength(UCS) testing,elastic modulus test,and ultrasonic wave measurement.The results demonstrat that the acoustic parameters variation of ultrasonic method of shaken concrete agrees basically with that of the unshanken one and the actual stress-strain curve of concrete compression-destroying of all stages follows the same failure law.
引文
[1]吴新璇.混凝土无损检测技术手册[M].北京:人民交通出版社,2003.
[2]余红发.混凝土非破损测强技术研究[M].北京:中国建材工业出版社,1999.
[3]佟晓君,马群,陈建伟,等.混凝土强度无损检测方法精度对比分析[J].河北理工学院学报,2005.
[4]Li Guhua,Wei Jiandong,He Guangjie,et al.Investigation onthe Compressive Strength of Fresh Concrete after SimulatedEarthquake[C]//The 4th International Symposium on LifetimeEngineering of Civil Infrastructure.2009.
[5]魏建东,李固华,何广杰,等.地震对新浇混凝土强度、钢筋握裹力的影响[R].成都:2009.
[6]柯小迪.新浇置钢筋混凝土基础板受振动扰动后之强度研究[D].朝阳:朝阳科技大学营建工程系.2006.
[7]许晅专地震对新浇置飞灰混凝土(35 MPa)强度性能之影响[D].逢甲大学土木工程学系,2007.7.
[8]GB/T 50081-2002普通混凝土力学性能试验方法标准[S].
[9]Kumar Mehta P.Concrete Structure,Properties and Materials.混凝土的结构、性能与材料[M].祝永年、沈威、陈志源,译.上海:同济大学出版社,1991.
[2]余红发.混凝土非破损测强技术研究[M].北京:中国建材工业出版社,1999.
[3]佟晓君,马群,陈建伟,等.混凝土强度无损检测方法精度对比分析[J].河北理工学院学报,2005.
[4]Li Guhua,Wei Jiandong,He Guangjie,et al.Investigation onthe Compressive Strength of Fresh Concrete after SimulatedEarthquake[C]//The 4th International Symposium on LifetimeEngineering of Civil Infrastructure.2009.
[5]魏建东,李固华,何广杰,等.地震对新浇混凝土强度、钢筋握裹力的影响[R].成都:2009.
[6]柯小迪.新浇置钢筋混凝土基础板受振动扰动后之强度研究[D].朝阳:朝阳科技大学营建工程系.2006.
[7]许晅专地震对新浇置飞灰混凝土(35 MPa)强度性能之影响[D].逢甲大学土木工程学系,2007.7.
[8]GB/T 50081-2002普通混凝土力学性能试验方法标准[S].
[9]Kumar Mehta P.Concrete Structure,Properties and Materials.混凝土的结构、性能与材料[M].祝永年、沈威、陈志源,译.上海:同济大学出版社,1991.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心