Concrete-filled steel tube optimized structure adopted in vertical structure and steel tube support mounting method

Abstract

The invention discloses a concrete-filled steel tube optimized structure adopted in a vertical structure. Ground anchor bolts are pre-buried in a concrete cushion layer and reach the ground; a steel tube column lower supporting end plate is arranged on the ground; a lower supporting steel tube column is arranged on the steel tube column lower supporting end plate; and a middle supporting steel tube column is arranged on the lower supporting steel tube column. An upper supporting steel tube column is arranged on the middle supporting steel tube column; the middle supporting steel tube column penetrates through a middle floor slab; and the middle supporting steel tube column penetrates through a hole in the outer side of the middle floor slab and is provided with a middle reinforcing steel tube arranged in a # shape. The middle supporting steel tube column, the lower supporting steel tube column, and the upper supporting steel tube column are connected through lug plates at the ends, matched screws and hexagon nuts; and a steel tube column upper supporting end plate is arranged at the top end of the upper supporting steel tube column. According to the concrete-filled steel tube optimized structure adopted in the vertical structure, the situation that after a basement bent frame is dismantled, a poured basement beam plate cannot be damaged by overground load is guaranteed, so thatthe safety of a basement main body project is guaranteed, and the construction quality of a basement is improved.

Description

technical field [0001] The invention relates to the field of concrete optimization structures, in particular to a steel pipe concrete optimization structure used in a vertical structure and a steel pipe support installation method. Background technique [0002] In large-scale construction sites, after the main body of the basement is completed, there are often multiple parallel operations on the ground, such as roof construction machinery operations, temporary centralized stacking of materials turnover, civil construction on the ground, steel structure ground assembly, etc., making the local basement roof may be overloaded Or some weak points of load-bearing may appear, which may lead to cracking, deformation and horizontal tilting of the beam-slab concrete structure, and even irreversible accidents such as local or overall structural collapse, which seriously affect the quality of the main structure, and there are large safety hazards . In order to ensure site safety, qual...

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Problems solved by technology

[0002] In large-scale construction sites, after the main body of the basement is completed, there are often multiple parallel operations on the ground, such as roof construction machinery operations, temporary centralized stacking of materials turnover, civil construction on the ground, steel structure ground assembly, etc., making the local basement roof may be overloaded Or some weak points of load-bearing may appear, which may lead to cracking, deformation and horizontal tilting of the beam-slab concrete structure, and even irreversible accidents such as local or overall structural collapse, which seriously affect the quality of the main structure, and there are large safety hazards

In order to ensure site safety, quality control and other normal operations, the most critical thing is how to lift the existing building while ensuring its structural safety and change the force transmission route. This is also a difficult problem for construction technicians. The common way to improve force transmission on site is to fix the entire steel pipe column to the corresponding weak point of the structure through mechanical hoisting, manual traction and control, and then adjust it. This method is difficult to ensure the installation accuracy of the steel column support, and requires a lot of labor and machinery during construction. , if the space in the basement is limited or the support structure needs to pass through the floor, the construction difficulty coefficient of this method is relatively large, and the steel pipe support column may be different from the basement roof beams, floor or ground during the process of moving and adjusting the steel pipe. The collision caused the damage to the concrete structure, and there were also potential safety hazards

[0003] Therefore, at present, the methods used to improve structural force transmission on the construction site mainly have the following shortcomings: 1) Due to the limited space in the basement, the lifting, transportation, and installation of the entire steel pipe column are difficult, and the operators need to continuously exert force to control the balance. It consumes a lot of physical strength. At the same time, large-scale steel pipe columns are likely to collide with the concrete structure during the movement control process, causing structural damage to varying degrees. After the structure is installed, it cannot be guaranteed that there is no gap between the upper surface of the steel column and the lower surface of the concrete structure; 2) The ground at the base of the steel pipe column may have unevenness, which requires manual chiseling, leveling and cleaning, resulting in a waste of labor and does not meet the requirements of green construction. When the height and quality of the steel pipe column are large, it may It will damage the leveled ground, causing the structure to be non-perpendicular to the ground, and there are potential safety hazards; 3) The embedded end of the base of the steel pipe column is not well reinforced. , the column may overturn as a whole, posing safety hazards

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