摘要
通过对边长300mm、内径150mm和边长400mm内径、240mm的两组预应力混凝土空心方桩桩体抗弯试验,分析研究预应力混凝土空心方桩在受弯承载力作用下桩体的应力应变情况、抗弯承载力及破坏特性。抗弯试验结果表明:预应力混凝土空心方桩抗弯承载能力明显优于规范标准值,引用抗弯强度修正系数来校核,在弯矩作用下桩体裂缝分布于跨中7m范围内(试验选用的桩长皆为10m),桩体受弯破坏后仍具有较高的抗弯承载力。
The relationships between stress and strain and flexural bearing capacity and failure property of hol- low and square prestressed concrete pile were analyzed through pile bending experiment in which pile edge length is 300ram （400ram}, inner diameter of 150ram {240ram}, pile length of 10 m. The experiment results show that the flexural bearing capacity of hollow and square prestressed concrete pile is higher than that of the standard value of regulations. The flexural beating capacity is ascertained through correction factor of tlexural strength. The fissures of pile spread in the range of 7m in the mid span. The piles have higher flexural bearing capacity after bending failure.
出处
《淮阴工学院学报》
CAS
2012年第5期38-41,共4页
Journal of Huaiyin Institute of Technology
关键词
预应力混凝土空心方桩
抗弯承载力
桩体裂缝
强度修正系数
hollow and square prestressed concrete pile
flexural bearing capacity
pile crack
correction coef-ficient of strength
