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Restricted type steel tube concrete member
A restricted type steel tube concrete member jointly consists of a longitudinal bar (1), a stirrup (2), a steel tube (3), core concrete (4) and a boundary layer (5), and is characterized in that the steel tube (3) is filled with the core concrete (4); the boundary layer (5) is arranged between the steel tube (3) and the core concrete (4); one or more than one pressure reducing notch (6) is formed in the surface of the steel tube (3); the length of each pressure reducing notch (6) equals the annular periphery of the member in the perimeter direction; the depth of each pressure reducing notch (6) is greater than or equals 80% of the thickness of the steel tube (3) and smaller than the thickness of the steel tube (3); the sum of widths of the pressure reducing notches (6) is not smaller than 2% of the length of the member; a fiber reinforced composite material (7) is arranged in each pressure reducing notch (6); and a fiber direction of the fiber reinforced composite material (7) is along the ring direction of the member. The technical shortcoming that the steel tube in a common steel tube concrete structure mainly bears vertical stress and is easy to bend is overcome. The restricted type steel tube concrete member is suitable to be a vertical load-bearing member of various bridges and buildings.
Restricted type steel tube concrete member
A restricted type steel tube concrete member jointly consists of a longitudinal bar (1), a stirrup (2), a steel tube (3), core concrete (4) and a boundary layer (5), and is characterized in that the steel tube (3) is filled with the core concrete (4); the boundary layer (5) is arranged between the steel tube (3) and the core concrete (4); one or more than one pressure reducing notch (6) is formed in the surface of the steel tube (3); the length of each pressure reducing notch (6) equals the annular periphery of the member in the perimeter direction; the depth of each pressure reducing notch (6) is greater than or equals 80% of the thickness of the steel tube (3) and smaller than the thickness of the steel tube (3); the sum of widths of the pressure reducing notches (6) is not smaller than 2% of the length of the member; a fiber reinforced composite material (7) is arranged in each pressure reducing notch (6); and a fiber direction of the fiber reinforced composite material (7) is along the ring direction of the member. The technical shortcoming that the steel tube in a common steel tube concrete structure mainly bears vertical stress and is easy to bend is overcome. The restricted type steel tube concrete member is suitable to be a vertical load-bearing member of various bridges and buildings.
Restricted type steel tube concrete member
WEI YANG (author) / GU DONGSHENG (author) / DUAN MAOJUN (author) / LI GUOFEN (author)
2015-12-23
Patent
Electronic Resource
English
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