高强钢管混凝土强度发展规律试验研究
|
摘要
针对C70,C80,C90高强钢管混凝土,通过抽芯取样、预埋试块及间接养护对比试验,探讨不同龄期外界物理行为对高强混凝土强度的影响;并探讨了不同养护条件下高强钢管混凝土随龄期强度发展规律。结果表明,高强钢管混凝土强度对抽芯取样等外界扰动较为敏感,间接养护可模拟钢管内部混凝土的养护环境,其标准立方体试块抗压强度可作为判定钢管混凝土强度的依据之一;随着龄期的增长,钢管的特定养护环境会使得混凝土强度后期增长较多,达到甚至超过标准养护和"同条件"养护的试块强度。将试验研究成果应用于实际工程,取得了满意的效果。
Based on C70,C80,C90 high strength concrete filled steel tube,the influence of external physical action on high strength concrete strength with ages were studied under the various conditions such as core pulling sample, pre-buried test block and indirectly curing,and the developing regularities under various curing conditions such were discussed.It is shown that the external physical action such as core pulling seriously influences on the strength of high strength concrete filled steel tube.The indirectly curing can simulate the inner curing environment of the steel tube,and the compressive strength of the standard cube test block under the indirectly curing condition can be the reference for judgment on the strength of high strength concrete filled steel tube.The later strength will be all along increasing with the ages for the specific curing condition,even over the strength under the curing conditions such as standard curing,same conditions curing.The satisfactory effect is got by application the above experimental results on the practical engineering.
Based on C70,C80,C90 high strength concrete filled steel tube,the influence of external physical action on high strength concrete strength with ages were studied under the various conditions such as core pulling sample, pre-buried test block and indirectly curing,and the developing regularities under various curing conditions such were discussed.It is shown that the external physical action such as core pulling seriously influences on the strength of high strength concrete filled steel tube.The indirectly curing can simulate the inner curing environment of the steel tube,and the compressive strength of the standard cube test block under the indirectly curing condition can be the reference for judgment on the strength of high strength concrete filled steel tube.The later strength will be all along increasing with the ages for the specific curing condition,even over the strength under the curing conditions such as standard curing,same conditions curing.The satisfactory effect is got by application the above experimental results on the practical engineering.
引文
[1]杜国锋,徐礼华,许成祥,等.钢管混凝土框架模型模态试验及数值模拟[J].沈阳建筑大学学报(自然科学版),2008,24(3):353-356.
[2]王敏,曹万林,张建伟,等.钢管混凝土边框高强混凝土组合剪力墙抗震性能试验研究[J].地震工程与工程振动,2008,28(2):90-95.
[3]聂建国,秦凯.方钢管混凝土柱内隔板式节点骨架曲线的确定方法[J].土木工程学报,2008,41(4):1-7.
[4]徐礼华,凡红,刘胜兵,等.方钢管混凝土柱-钢梁节点抗震性能试验研究与有限元分析[J].工程力学,2008,25(2):122-131.
[5]陈宝春,欧智菁.钢管混凝土格构柱极限承载力计算方法研究[J].土木工程学报,2008,41(1):55-63.
[6]AHMED ELREMAILY,ATOROD AZIZINAMINI.Behavior andstrength of circular concrete-filled tube columns[J].Journal ofConstructional Steel Research,2002,58(12):1567-1591.
[7]XIAO YAN,HE WEN HUI,CKOI KANG KYU.Confined concrete-filled tubular columns[J].Journal of Structural Engineering,2005,131(3):488-497.
[8]钟善桐.钢管混凝土结构(第3版)[M].北京:清华大学出版社,2003.
[9]韩林海.钢管混凝土结构——理论与实践[M].北京:科学出版社,2004.
[2]王敏,曹万林,张建伟,等.钢管混凝土边框高强混凝土组合剪力墙抗震性能试验研究[J].地震工程与工程振动,2008,28(2):90-95.
[3]聂建国,秦凯.方钢管混凝土柱内隔板式节点骨架曲线的确定方法[J].土木工程学报,2008,41(4):1-7.
[4]徐礼华,凡红,刘胜兵,等.方钢管混凝土柱-钢梁节点抗震性能试验研究与有限元分析[J].工程力学,2008,25(2):122-131.
[5]陈宝春,欧智菁.钢管混凝土格构柱极限承载力计算方法研究[J].土木工程学报,2008,41(1):55-63.
[6]AHMED ELREMAILY,ATOROD AZIZINAMINI.Behavior andstrength of circular concrete-filled tube columns[J].Journal ofConstructional Steel Research,2002,58(12):1567-1591.
[7]XIAO YAN,HE WEN HUI,CKOI KANG KYU.Confined concrete-filled tubular columns[J].Journal of Structural Engineering,2005,131(3):488-497.
[8]钟善桐.钢管混凝土结构(第3版)[M].北京:清华大学出版社,2003.
[9]韩林海.钢管混凝土结构——理论与实践[M].北京:科学出版社,2004.
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