Assembled prestressed ultra-high-strength steel-self-stressed fiber reinforced concrete protective door

Abstract

The invention discloses a fabricated ultrahigh-strength shape steel-self-stressed fiber reinforced concrete protection door. The protection door comprises an arc energy dissipation device (1), ultrahigh-strength shape steel-self-stressed fiber reinforced concrete main beams (2) and left and right ultrahigh-strength shape steel side baffles (4, 5); the arc energy dissipation device (1) is detachably and fixedly connected with the top ends of the main beams (2) through assembly connecting pieces (3), and the left and right side baffles (4, 5) are detachably and fixedly connected with the left sides and the right sides of the main beams (2) through assembling connecting pieces (3) correspondingly; and the arc energy dissipation device (1) and the left and right side baffles (4, 5) are prefabricated from ultrahigh-strength shape steel, and the main beams (2) are prefabricated from the ultrahigh-strength shape steel and self-stressed fiber reinforced concrete. The protection door has the characteristics of being high in force resistance level, light in door body, rapid in construction and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of protective engineering, in particular to an assembled prestressed ultra-high-strength steel-self-stressed fiber concrete protective door with high resistance level, light door body, fast construction and wide application range. Background technique [0002] Protection engineering is an important part of national defense force, an important security guarantee for national production and development, and an important embodiment of national defense strength and national defense force. For a long time, it has played an important role in curbing foreign aggression, consolidating national defense and ensuring national security, and has become an important deterrent force. As an important part of the connection between the main body of the protective engineering structure and the ground surface, the protective door structure provides access to personnel, vehicles, weapons and ammunition, equipment, and materials...

AI Technical Summary

Problems solved by technology

[0006] 2. The door body is heavy, cumbersome to open and close, and the construction and maintenance costs are high

The early design mainly increased the section and thickness of the door structure to increase the resistance level, and the increase in the section and thickness will inevitably lead to an increase in the amount of steel and the weight of concrete, resulting in a thicker door structure and higher requirements for the design of the opening and closing system. high

In addition, the increase in engineering volume will inevitably lead to the extension of the construction period, further increasing the construction and maintenance costs

[0007] 3. The construction standard of the foundation part is high, and the site selection of the protective engineering structure is limited

The heavy door structure will inevitably increase the possibility of foundation settlement, especially the occurrence of uneven settlement, which increases the construction difficulty of the foundation part and prolongs the construction period

In addition, the larger door structure increases the risk of exposure of the protection project, which limits the site selection of the project structure

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