Composite concrete precast assembly column
A prefabricated assembly and concrete technology, applied in the direction of columns, pier columns, pillars, etc., can solve the problems of poor seismic performance, easy damage, poor toughness, etc., and achieve the effects of convenient transportation and construction, easy industrial production, and reduced cross-sectional size
Inactive Publication Date: 2017-05-31
YANGZHOU UNIV
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Problems solved by technology
[0006] The above-mentioned prefabricated building components have problems such as low utilization rate of new building materials, self-heavy weight, integrity, rigidity, poor seismic performance, poor toughness, easy damage, single function, and low technological level, which are far behind the development speed of the civil engineering industry.
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[0019] Such as figure 1 As shown, the present invention includes a square pipe column shell 1 with both ends closed, and the square pipe column shell 1 adopts active powder concrete to be poured and formed. The active powder concrete is made of ordinary portland cement, silica fume, admixture, fine Aggregate, high-efficiency water reducer, among them, ordinary Portland cement is 42.5 grade and above strength grade, SiO2 content in silica fume is more than 90%, the admixture is ultra-fine slag powder or finely ground Class I fly ash, The fine aggregate is quartz sand or washed river sand with a maximum particle size of not more than 2.5mm. The high-efficiency water reducer is polycarboxylate water reducer with a water reducing rate of more than 30%. The compressive strength of reactive powder concrete is 130MPa~150MPa Strength 20MPa ~ 30MPa, self-leveling.
[0020] The four sides of the square column shell 1 are respectively provided with side grooves 2 along the length direct...
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The invention relates to a composite concrete precast assembly column comprising a square pipe column shell body with the two ends being closed. A steel bar cage is arranged in the square pipe column shell body filled with light aggregate concrete. The steel bar cage comprises a plurality of longitudinal bars and stirrups evenly bound on the longitudinal bars. The upper ends of the longitudinal bars stretch upward out of the square pipe column shell body. A plurality of longitudinal bar butt joint holes in same coaxial lines with the longitudinal bars are formed in the bottom of the square pipe column shell body. Two triangular grooves are formed in the lower end of the square pipe column shell body, and two triangular bulges are arranged in the upper end of the square pipe column shell body. When construction is carried out, a lower layer column is fixed; then an upper layer column is hoisted; the longitudinal bars of the lower layer column are inserted into the longitudinal bar butt joint holes of the upper layer column; the two triangular bulges of the upper end of the upper layer column are arranged in the two triangular grooves of the lower end of the lower layer column in a matching mode; and grouting materials are injected between the upper layer column and the lower layer column through a grouting hole to enable the upper layer column and the lower layer column to be firmly connected together, and integrity is good.
Description
technical field [0001] The invention relates to the field of building construction, in particular to a composite concrete prefabricated assembly column. Background technique [0002] The main components of the prefabricated structure are prefabricated in the factory and assembled on site. Its advantages lie in factory production, standardized operations, modern functions, diversified designs, flexible bays, good fire and earthquake resistance, clear and distinctive facades, and high quality assurance rates. The development strategy of national energy conservation and emission reduction and construction industrialization, on the one hand, adopts the integrated design and construction of architecture and decoration, and the decoration can be carried out simultaneously with the main construction to shorten the construction period. The more standardized the components, the higher the production efficiency, and the corresponding cost of prefabricated components will decrease. Wit...
Claims
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IPC IPC(8): E04C3/34
CPCE04C3/34
Inventor 张鸣陈龙修王付鸣周明耀王永超宋琳钱晨
Owner YANGZHOU UNIV