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A platform for research: civil engineering, architecture and urbanism
Reinforced concrete combination column restrained in steel pipe and construction method
The invention discloses a reinforced concrete combination column restrained in a steel pipe and a construction method, and belongs to the field of building structures. Longitudinal steel bars are replaced by small-diameter steel pipes, and when the cross sectional areas of the steel pipes and solid steel bars are the same, the steel pipes have higher area second moment and turning radius than the solid steel bars. The steel pipes are used for replacing all or part of the longitudinal steel bars, overall buckling of the steel bars can be reduced, and the mixed steel bars in the combination column overcome the defect that original steel bars are tensile but not compressive. And on the other hand, the steel pipe is adopted to restrain the ultra-high performance concrete, the steel pipe wall plays an annular restraining role on the concrete, the bearing capacity of the combination column is remarkably improved, and the section area of the column is reduced. The defects of integral buckling and insufficient bearing capacity of steel bars in a common reinforced concrete column are overcome, the bearing capacity and ductility of components are remarkably improved, and under the condition of the same steel content, higher bearing capacity and smaller sectional area can be achieved, and larger building use space can be created.
本发明公开了一种钢管内约束的钢筋混凝土组合柱及施工方法，属于建筑结构领域。本发明采用小直径钢管代替纵向钢筋，当钢管和实心钢筋横截面积相同时，钢管比实心钢筋具有更高的面积二阶矩和回转半径。用钢管代替全部或者部分纵向钢筋，可以减少钢筋是整体屈曲，组合柱中的混合钢筋克服以往钢筋抗拉不抗压的缺点。另一方面，采用钢管约束超高性能混凝土，钢管壁对混凝土起到环向约束作用，显著提高了组合柱的承载，并减小柱截面面积。本发明克服了普通钢筋混凝土柱中钢筋的整体屈曲和承载力不足的缺点，显著提升了构件的承载力和延性，在含钢率相同的条件下，可以达到更高的承载力，更小的截面面积，创造出更大的建筑使用空间。
Reinforced concrete combination column restrained in steel pipe and construction method
The invention discloses a reinforced concrete combination column restrained in a steel pipe and a construction method, and belongs to the field of building structures. Longitudinal steel bars are replaced by small-diameter steel pipes, and when the cross sectional areas of the steel pipes and solid steel bars are the same, the steel pipes have higher area second moment and turning radius than the solid steel bars. The steel pipes are used for replacing all or part of the longitudinal steel bars, overall buckling of the steel bars can be reduced, and the mixed steel bars in the combination column overcome the defect that original steel bars are tensile but not compressive. And on the other hand, the steel pipe is adopted to restrain the ultra-high performance concrete, the steel pipe wall plays an annular restraining role on the concrete, the bearing capacity of the combination column is remarkably improved, and the section area of the column is reduced. The defects of integral buckling and insufficient bearing capacity of steel bars in a common reinforced concrete column are overcome, the bearing capacity and ductility of components are remarkably improved, and under the condition of the same steel content, higher bearing capacity and smaller sectional area can be achieved, and larger building use space can be created.
本发明公开了一种钢管内约束的钢筋混凝土组合柱及施工方法，属于建筑结构领域。本发明采用小直径钢管代替纵向钢筋，当钢管和实心钢筋横截面积相同时，钢管比实心钢筋具有更高的面积二阶矩和回转半径。用钢管代替全部或者部分纵向钢筋，可以减少钢筋是整体屈曲，组合柱中的混合钢筋克服以往钢筋抗拉不抗压的缺点。另一方面，采用钢管约束超高性能混凝土，钢管壁对混凝土起到环向约束作用，显著提高了组合柱的承载，并减小柱截面面积。本发明克服了普通钢筋混凝土柱中钢筋的整体屈曲和承载力不足的缺点，显著提升了构件的承载力和延性，在含钢率相同的条件下，可以达到更高的承载力，更小的截面面积，创造出更大的建筑使用空间。
Reinforced concrete combination column restrained in steel pipe and construction method
一种钢管内约束的钢筋混凝土组合柱及施工方法
SHI QINGXUAN (author) / LI XUEMEI (author) / WANG PENG (author) / WANG QIUWEI (author) / TAO YI (author)
2022-10-18
Patent
Electronic Resource
Chinese
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