A Partially Assembled Steel Tube Concrete Composite Column-Steel Beam Composite Joint
A technology of steel pipe concrete and reinforced concrete columns, which is applied in the field of building anti-seismic, can solve the problems such as the increase of project cost, and achieve the effects of simple construction, wide application prospects, important engineering practical significance and social and economic benefits
Active Publication Date: 2021-11-16
CHANGAN UNIV
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Problems solved by technology
SFRC has significant strengthening and anti-cracking effects, which can delay the growth of micro-cracks and the collapse of micro-cavities in the matrix to a certain extent, so that its tensile, bending, and shear strengths are significantly improved compared with ordinary concrete. Impact, fatigue resistance, post-crack toughness and durability have also been greatly improved, but the application of steel fiber concrete will significantly increase the project cost
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[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0045] see figure 1 , figure 2 , image 3 and Figure 4 , the partially assembled concrete filled steel pipe composite column-steel beam composite node provided by the present invention includes a steel fiber concrete shell 1, steel pipes 4, spiral stirrups 6, stiffeners and steel beams 11; wherein, the steel fiber concrete shell 1 is arranged in sections Among the three longitudinal layers of steel pipes (the shells arranged in different layers are respectively called the upper prefabricated steel fiber reinforced concrete shell, the middle layer of prefabricated steel fiber reinforced concrete shell and the lower layer of prefabricated steel fiber reinforced concrete shell), each section of steel fiber reinforced concrete shell The longitudinal reinforcement 2 arranged in the column length direction (that is, the longitudinal direction) ...
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The invention discloses a partially assembled concrete-filled steel pipe composite column-steel beam composite node. The composite node includes a multi-section partially prefabricated steel pipe concrete composite column and a steel beam. The multi-section partially prefabricated steel pipe concrete composite column includes an upper Weakened steel pipes, partial gradient stiffeners and inner filled concrete mainly arranged in the non-weakened section of steel pipes, and multi-section reinforced concrete column shells arranged on the outside of steel pipes, and outer filled concrete is arranged between steel pipes and reinforced concrete cylindrical shells. Spiral stirrups connected to the outer wall of the steel pipe are arranged in the filled concrete, and joint core area coupling workpieces are arranged between adjacent reinforced concrete column shells, and steel beams are connected to the joint core area coupling workpieces. The partially assembled concrete filled steel pipe composite column-steel beam composite joint proposed by the present invention has many significant advantages such as convenient construction, wide applicability, and high overall performance.
Description
technical field [0001] The invention belongs to the field of building anti-seismic, and relates to a steel pipe concrete composite column which can avoid rigidity mutation in the structure. Background technique [0002] Concrete-filled steel tube structure is a main form of steel-concrete composite structure. It has the characteristics of high bearing capacity, high rigidity, good seismic performance, saving steel, and reducing engineering cost. It has been more and more widely used in long-span structures and high-rise buildings. and super high-rise buildings. [0003] With the continuous increase of building height and span, the load borne by the columns is increasing. In order to meet the requirements of the axial compression ratio in the structural design, the section size of the bottom column is increased, resulting in the formation of short columns at the bottom of the structure, and the deformation capacity of short columns and The seismic performance is poor. The a...
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IPC IPC(8): E04B1/30E04B1/58E04C3/32E04C3/34
CPCE04B1/185E04B1/30E04C3/32E04C3/34
Inventor 周天华余吉鹏张钰王继琴李亚鹏
Owner CHANGAN UNIV