Semi-prefabricated and semi-cast-in-place type constructional column and assembly structure and construction method thereof

Abstract

The invention relates to constructional engineering, in particular to a semi-prefabricated and semi-cast-in-place type constructional column and an assembly structure and a construction method thereof. The semi-prefabricated and semi-cast-in-place type constructional column comprises a column body, wherein a steel bar system is arranged in the column body, the column body comprises a cast-in-place section and a prefabricated section which are sequentially arranged from bottom to top, a reserved groove which is connected with a pre-buried positioning steel bar of an upper structural beam is vertically formed in the surface of one side of the upper part of the prefabricated section, and supporting steel bars which are used for supporting the prefabricated section on a lower structural beam are embedded in the lower part of the prefabricated section, penetrate through the cast-in-place section and extend out of the cast-in-place section by a certain length from the bottom face of the cast-in-place section. According to the structure and assembly of the semi-prefabricated and semi-cast-in-place type constructional column, workers can conveniently pour and vibrate concrete, the pouring quality of the constructional column can be guaranteed, and the constructional column can be easily connected with an original structural beam.

Description

technical field [0001] The invention relates to a construction project, in particular to a semi-prefabricated and semi-cast-in-place structural column and its assembly structure and construction method. Background technique [0002] According to the relevant requirements of "Code for Design of Masonry Structures" (GB50003-2011), reinforced brick masonry members should be provided with structural columns at the intersection of longitudinal and horizontal walls, at the end of the wall and at the edge of larger openings. In the actual construction on site, since the height of the structural column (equal to the clear height of the storey) is higher than that of the construction personnel, operating platforms need to be erected for many operations, and the cross-sectional area of ​​the structural column is small, it is difficult to reinforce the formwork, and the dense distribution of steel bars makes it impossible for the vibrating rod to go down during pouring. to the bottom o...

AI Technical Summary

Problems solved by technology

In the actual construction on site, since the height of the structural column (equal to the clear height of the storey) is higher than that of the construction personnel, operating platforms need to be erected for many operations, and the cross-sectional area of ​​the structural column is small, it is difficult to reinforce the formwork, and the dense distribution of steel bars makes it impossible for the vibrating rod to go down during pouring. to the bottom of the structural column, further resulting in the inability to effectively vibrate the lower part of the structural column, which has serious quality and safety hazards. The dislocation between the planting bar and the vertical steel bar of the structural column caused by adjusting the position of the planting bar not only affects the binding of the vertical steel bar of the structural column, but also leads to poor quality of the binding connection between the vertical steel bar of the structural column and the planting bar; when the formwork of the structural column is reinforced, due to The small cross-sectional area of ​​the structural column makes it difficult to reinforce the formwork. The formwork reinforcement system cannot fully bear the self-weight of the concrete, which can easily lead to the expansion of the lower part of the structural column, which will adversely affect the later construction and the surface appearance is poor; It is higher than the height that the human body can reach, and it needs to be poured with the help of an operating platform to complete the pouring; after the structural column is poured, insufficient vibration will easily cause problems such as the concrete honeycomb surface of the structural column, which will affect the quality and appearance of the structural column

[0003] Chinese patent CN107288263A discloses a construction method of a semi-prefabricated and semi-cast-in-place structural column, but the prefabricated part is the periphery and bottom of the structural column, and the pouring port is still on the top of the structural column, so although the amount of formwork used is reduced, It also reduces the expansion of the lower part to a certain extent, but it is still inconvenient to connect with the structural beams, prone to dislocation of planting bars, inconvenient to pour, and difficult to vibrate concrete, resulting in unguaranteed concrete pouring quality and poor visual quality

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