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Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same

A reinforced concrete and concrete technology, applied in the processing of building materials, infrastructure engineering, structural elements, etc., can solve problems such as insufficient use of pull-out steel bars, improve anchorage performance and punching shear resistance, improve ductility, improve The effect of internal force distribution

Inactive Publication Date: 2007-05-16
CHINA FIRST HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is that the punching cracks appear and develop roughly along the direction of 45° to the horizontal direction, while the configured uplifting steel bars are arranged vertically, obliquely intersecting with the punching cracks, which does not give full play to the effect of the uplifting steel bars. effect

Method used

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  • Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same
  • Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same
  • Reinforced concrete bearing platform arranged with diagonal reinforcing steel and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Figure 4, Figure 5 and Figure 6 show the schematic diagrams of the structural reinforcement of a structural unit of a reinforced concrete cap with oblique reinforcement. The reinforcement of the reinforced concrete cap is that the top surface is arranged with a reinforcement mesh composed of the top horizontal reinforcement 3 and the top longitudinal reinforcement 4; the bottom surface is arranged with a reinforcement mesh composed of the bottom horizontal reinforcement 5 and the bottom longitudinal reinforcement 6. Long layout, reinforcement diameter 12mm, distribution spacing 150mm; on the periphery of the punching failure surface 9, the top reinforcement and bottom reinforcement are supported by vertical tension reinforcement 7; the direction of the inner inclined reinforcement 1 is arranged at an angle of 45° with the horizontal plane , inclined to the steel column foot 8, arranged in 6 layers, the steel bar diameter is 12mm, and the distribution distance is 100mm; t...

Embodiment 2

[0033] Figure 7, Figure 8, and Figure 9 show the schematic diagrams of the structural reinforcement of a structural unit of a reinforced concrete cap with oblique pull-resistant steel bars. The top surface and bottom surface of the platform are respectively equipped with reinforcement mesh composed of longitudinal reinforcement and transverse reinforcement. The diameter of the reinforcement is 12mm, and the distribution spacing is 200mm; 7 Tension support; the arrangement direction of the inner inclined steel bar 1 forms an angle of 45° with the horizontal plane, and is inclined to the steel column foot 8, and is arranged in three layers, the diameter of the steel bar is 12mm, and the distribution distance is 200mm; form an included angle of 45°, away from the steel column foot 8 and tilt outwards, arranged in two layers, the diameter of steel bars is 12mm, and the distribution spacing is 200mm; Each end of the steel bar is provided with a hook, which is respectively hung on t...

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Abstract

The invention is steel bar concrete cushion cap which is equipped with obliquely steel bar and its method for making and belongs to cushion cap construction. The blanking crack arises and develops along the direction of 45degree with the horizontal direction, but the prior resistant-plucking steel bars are installed vertically and oblique with the blanking crack, so the method does not give full play of the role of resistant-plucking steel bars. The features of the invention are: cross-installing steel bars which inner and outer are inclined around the steel legs (8) in cushion cap, the internal inclined steel bars (1) and the external inclined steel bars (2) are both orthogonal with the blanking broken surface(9) of the side approximately and the angle between them and the horizontal surface is 40degree-50degree; the ends of internal inclined steel bars (1) and the external inclined steel bars(2) are equipped with crotchs, the crotch butts on the horizontal or vertical reinforcement of the top and the bottom horizontal bar-mat reinforcement and is banded and fixed with the steel bar in p distribution which is vertical with the inclined steel bars. The invention restricts the blanking crack more effectively and limits new blanking cracks rising, enhances the anchorage capacity of cushion cap to steel legs and the ductili of cushion cap significantly.

Description

technical field [0001] The invention relates to a reinforced concrete cap with oblique steel bars. The cap can better enhance punching resistance, enhance the anchoring ability to steel column feet, and enhance the ductility of the cap, which belongs to a cap structure. Background technique [0002] The cap is the connection part between the upper structure and the pile foundation, and its structural performance is relatively complicated due to its special force transmission mechanism. In large-scale steel structure public buildings, the force and geometric dimensions of the steel structure column foot are very large, and its anchorage performance determines whether the steel structure can have a stable bearing capacity. It also affects the internal force distribution and deformation performance of the structure. . How to make the uplift steel bars arranged in the reinforced concrete cap fully play its role to improve the anchorage performance of the cap structure to the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/14E04B1/00E04B1/16E04B1/38E04G21/12E04C5/01
Inventor 曹万林赵长军张晓新
Owner CHINA FIRST HIGHWAY ENG
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