Section steel high-ductility fiber concrete combined column
A fiber reinforced concrete, high ductility technology, applied in the field of steel-concrete composite columns, can solve the problems of longitudinal shear slip failure, poor bonding performance, limitations, etc., to increase the overall performance and deformation capacity, improve the mechanical performance and earthquake resistance performance, the effect of improving bearing capacity and seismic performance
Active Publication Date: 2014-07-02
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
[0002] Steel-concrete composite columns are widely used in large-scale industrial buildings and high-rise and super-high-rise civil buildings in my country. Poor bonding performance makes the existing steel-concrete composite columns prone to longitudinal shear slip damage, which is unfavorable to the earthquake resistance of the structure and difficult to repair after the earthquake
In summary, due to the brittleness of the concrete itself, the medium-section steel in the existing steel-concrete composite columns cannot fully exert its excellent performance, resulting in poor crack resistance of the composite columns, prone to longitudinal shear slip damage, and post-earthquake repair costs. high, which limits its application in high-rise building structures
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Embodiment 1
[0019] Follow the technical scheme of the present invention, such as figure 1 As shown, the section size of the steel high ductility fiber reinforced concrete column in this embodiment is b×h=700mm×700mm, and the height of the column is 3m; the stirrup 3 is HPB300, the diameter is 10mm, and the spacing is 100mm; the longitudinal reinforcement 4 is four HRB400 grade steel bars with a diameter of 20mm; steel bar 1 is made of Q345 steel with a size of 440×300×11.5×21. Its structure is mainly configured with section steel 1, high ductility concrete 2, stirrup 3 and longitudinal reinforcement 4. Its specific construction process is:
[0020] Step 1: Binding steel bars, placing section steel, and setting up formwork on site;
[0021] Step 2: pouring high-ductility fiber concrete, removing the formwork after 7 days of curing, and obtaining the steel-shaped high-ductility fiber concrete composite column of this embodiment.
[0022] The components of the high ductility fiber concret...
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Abstract
The invention discloses a section steel high-ductility fiber concrete combined column, which solves the problems of longitudinal shear slip damage and poor anti-cracking and anti-seismic performance due to the brittleness and the low tensile strength, shear resistance and bending strength of the concrete material of the conventional section steel concrete combined column and poor adhesive property of the section steel. The casting material of the high-ductility fiber concrete combined column is high-ductility fiber concrete, and the high-ductility fiber concrete contains cement, fly ash, silica fume, sand, polyvinyl alcohol (PVA) fiber and water. The anti-cracking performance, the deformation resistance, the anti-seismic performance and the concrete and section steel adhesive property of the section steel high-ductility fiber concrete combined column are superior to those of the conventional section steel concrete combined column.
Description
technical field [0001] The invention relates to a steel concrete composite column, in particular to a steel high ductility fiber concrete composite column. Background technique [0002] Steel-concrete composite columns are widely used in large-scale industrial buildings and high-rise and super-high-rise civil buildings in my country. The poor bonding performance makes the existing steel-concrete composite columns prone to longitudinal shear slip damage, which is unfavorable to the earthquake resistance of the structure, and it is difficult to repair after the earthquake. In summary, due to the brittleness of the concrete itself, the medium-section steel in the existing steel-concrete composite columns cannot fully exert its excellent performance, resulting in poor crack resistance of the composite columns, prone to longitudinal shear slip damage, and post-earthquake repair costs. High, so that its application in high-rise building structures has been limited. Contents of t...
Claims
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IPC IPC(8): C04B28/04
Inventor 邓明科梁兴文孙飞
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY