摘要
通过对8根配置600 MPa级钢筋的有黏结部分预应力混凝土梁进行试验,研究试验梁的变形性能。对比分析预应力度、非预应力纵向受拉钢筋强度等级、非预应力纵向受拉钢筋配筋率、混凝土强度等级对有黏结部分预应力混凝土梁挠度及刚度的影响。研究结果表明:提高配置600 MPa级钢筋的有黏结部分预应力混凝土梁的预应力度、非预应力纵向受拉钢筋强度等级、非预应力纵向受拉钢筋配筋率可以提高试验梁的受弯承载力,增加试验梁的刚度,减缓试验梁的刚度退化,提高非预应力纵向受拉钢筋强度等级、混凝土强度等级可以提高试验梁的变形能力。
In order to investigate deformation behavior of bonded partially prestressed concrete beams with 600 MPa steel bars,eight test beams were tested. The effects of partial prestressing ration,non prestressed longitudinal bar strength grade,non prestressed steel reinforcement ratio and concrete strength grade on deformation behavior were compared. It was shown that with the increase of partial prestressing ration,non prestressed longitudinal bar strength grade or non prestressed steel reinforcement ratio,the bending capacity and stiffness of bonded partially prestressed concrete beams with 600 MPa steel bars were enhanced,the stiffness degeneration was slow. The deformation capacity was improved with the increase of non prestressed longitudinal bar strength grade or concrete strength grade.
出处
《工业建筑》
CSCD
北大核心
2016年第4期65-68,共4页
Industrial Construction
基金
河北省交通运输厅科技计划项目(Y-2012041
Y-2011052)
河北省高等学校科学技术研究重点项目(ZD2010123)
河北省建设科学技术研究计划(2014-122)
关键词
有黏结
预应力混凝土梁
挠度
刚度
bonded
prestressed concrete beam
deflection
stiffness
