钢-混凝土组合扁梁的承载性能研究及工程应用

组合扁梁由于具有降低结构层高,改善钢结构的防火性能,而且能够满足建筑上对大空间的无柱要求等优点,在多层钢结构建筑中有广阔的应用前景。对组合扁梁的发展和国内外的研究历史进行了回顾;通过理论分析、有限元计算以及试验研究等手段对叠合板组合扁梁、深肋组合扁梁的刚度、承载力、有效宽度以及粘结力等问题进行了研究,重点提出了刚度和承载力的计算方法;对组合扁梁在某工程中的应用进行了介绍;最后提出了组合扁梁研究中急需解决的问题并对其研究趋势进行了展望。

STUDY ON LOAD BEARING CAPACITY AND ENGINEERING APPLICATION OF STEEL-CONCRETE SLIM BEAM

The steel-concrete composite slim beam has a promising application prospect in multi-storey steel building because of its advantages such as low structural height, efficient fire resistance and good serviceability, etc. In this paper, the research on the composite slim beam was not only reviewed, but also the rigidity, load bearing capacity, effective width and bond of both laminated composite slim beam and deep deck composite slim beam were investigated through theoretical method, FEM and experimental method. Engineering application of the composite slim beam in some project was introduced as well. Finally, the research trend pertinent to the composite slim beams is previewed.