新型组合结构——给水钢管混凝土组合梁的试验研究

A new type composite structure——experimental research of composite beams with water supply steel pipe

对模拟实际工程中将给排水钢管埋于梁内的组合梁进行了试验研究,为在工程中更好地应用与完善钢骨混凝土结构设计理论提供试验依据。根据6根不同的埋梁给排水钢管组合梁的三点弯试验结果,研究该特殊的组合结构构件正截面抗弯的受力性能、刚度和构件的裂缝发展与破坏形态。从现有的几种计算方法出发建立适合该组合梁的计算公式。并对几种计算方法的优缺点进行了分析和讨论,以便工程应用。

In this paper,the experimental base is provided to perfect the steel reinforced concrete structure design theory and apply it widely in the actual engineering,by doing experimental research of composite beams with water supply and drainage steel pipe that buried in the beam simulate the practical engineering.The cross-section bending force performance,stiffness of the special composite structure component and it＇s fracture development and failure type is researched,according to the three bending test results of six different composite beams with water supply and drainage steel pipe.This paper tries to establish suitable calculation formula of the composite beams from some existing calculation methods.It also analyses and discusses merit and demerit of the several calculation methods for engineering practice.