Reinforced concrete stairway anti-seismic reinforcing structure and transforming method thereof

A reinforced concrete and reinforced structure technology, which is applied in the direction of stairs, building types, buildings, etc., can solve the adverse effects of the main structure's anti-seismic ability, achieve the effect of restoring normal use functions, reducing earthquake effects, and clear structural force transmission mechanism

Pending Publication Date: 2018-07-13
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for a large number of reinforced concrete frame structures designed and built according to old codes, how to alleviate the adverse impact of stairs on the seismic capacity of the main structure is a problem that needs to be solved urgently

Method used

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  • Reinforced concrete stairway anti-seismic reinforcing structure and transforming method thereof
  • Reinforced concrete stairway anti-seismic reinforcing structure and transforming method thereof
  • Reinforced concrete stairway anti-seismic reinforcing structure and transforming method thereof

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Experimental program
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specific Embodiment approach 1

[0021] Specific implementation mode one: as Figure 1~Figure 3 As shown, the present invention discloses a reinforced concrete staircase anti-seismic reinforcement structure, comprising a lower platform base 1, a stair plate 2, and an upper platform base 3, and the upper platform base 3 and the lower platform base 1 are fixed Stairs 2 are provided, and the reinforced concrete staircase seismic strengthening structure also includes two lead rubber bearings 6, and the connection position of the lower platform base 1 and the stair 2 is cut and set horizontally, and the lower platform base 1 The cut surface is provided with two lower grooves 5 along its width direction, and the cut surface of the stair plate 2 is provided with two upper grooves 4 along its width direction, and the two upper grooves 4 are connected with the The two lower grooves 5 are set in one-to-one correspondence, and the two upper grooves 4 are arranged through the rear of the stair plate 2, and the two lower ...

specific Embodiment approach 2

[0022] Specific implementation mode two: as figure 2 As shown, this embodiment is a further description of the first specific embodiment. The two lead rubber bearings 6 include an upper connecting steel plate 6-1, a rubber protection cylinder 6-2, a lower connecting steel plate 6- 3. Lead core 6-6, multi-layer internal rubber 6-4 and multi-layer internal steel plate 6-5, the upper connecting steel plate 6-1 and the lower connecting steel plate 6-3 are circular steel plates and arranged horizontally side by side , the center of the lower surface of the upper connecting steel plate 6-1 is fixedly provided with an upper circular sealing plate 6-8, and the center of the upper surface of the lower connecting steel plate 6-3 is fixedly provided with a lower circular sealing plate 6-7. The protection cylinder 6-2 is inserted between the upper circular sealing plate 6-8 and the lower circular sealing plate 6-7, and the lead core 6-6 is in the shape of a round rod and coaxially arrang...

specific Embodiment approach 3

[0023] Specific implementation mode three: as Figure 1~2 As shown, this embodiment is a further description of the second specific embodiment. The upper connecting steel plate 6-1 and the lower connecting steel plate 6-3 of each lead rubber bearing 6 are evenly arranged along its circumferential direction. A plurality of bolt mounting holes, each of the bolt mounting holes corresponds to a fixed bolt, and the upper connecting steel plate 6-1 and the lower connecting steel plate 6-3 are connected to the corresponding upper concave through a plurality of fixing bolts respectively. Groove 4 and lower groove 5 groove bottom surfaces are affixed.

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PUM

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Abstract

The invention provides a reinforced concrete stairway anti-seismic reinforcing structure and a transforming method thereof. Stairway plates are fixed between an upper platform base and a lower platform base, the connecting positions of the lower platform base and the stairway plates are arranged in a horizontally cut-off mode, and two lower grooves are formed in the cut-off face of the lower platform base in the width direction of the cut-off face of the lower platform base. Two upper grooves are formed in the cut-off face of each stairway plate in the width direction of the cut-off face of the stairway plate, a lead core rubber support is mounted between each upper groove and the corresponding lower groove, and FRP is pasted to the bottom of the stairway plates for reinforcement. The structure is definite and reasonable in force transmission mechanism, and the stairway plates and the lower platform base are flexibly connected through the lead core rubber support to reduce the effect of an earthquake.

Description

technical field [0001] The invention relates to an anti-seismic reinforcement structure of a staircase and a modification method thereof, in particular to an anti-seismic reinforcement structure of a reinforced concrete staircase and a modification method thereof. Background technique [0002] Previous earthquake damage surveys at home and abroad have found that reinforced concrete frame structure stairs often suffer serious damage under earthquake action. The most common form of damage is the damage of the frame columns connected to the platform slab (beam). This is because the stairs and the platform The existence of slabs (beams) will act as a "K"-shaped support for the frame, making the frame columns form short columns, which changes the expected stress mode of the frame columns, and shear failure or bending-shear failure occurs under earthquake action. Failure of stairwell frame columns to exit work may also cause progressive collapse of the entire structure. In actual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04F11/02E04H9/02
CPCE04F11/02E04H9/022E04H9/027
Inventor 左占宣公茂盛王晓敏谢礼立
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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