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Steel roof truss with anti-seismic and energy-dissipation effect

A steel roof truss and function technology, which is applied in the direction of earthquake resistance, truss structures, joists, etc., can solve problems such as poor structural ductility, low seismic energy dissipation capacity, and brittle failure of steel roof trusses

Inactive Publication Date: 2016-06-15
济南热电集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional trapezoidal steel roof truss is composed of rigid rods connected by hinges. These rigid rods generally adopt double-angle steel, T-shaped steel or H-shaped steel and other cross-sections, which can not only bear tension, but also bear pressure. However, when the horizontal earthquake action reaches a certain level, The rigid rod under compression is easy to quit work due to instability, resulting in brittle failure of the steel roof truss, poor structural ductility, and low seismic energy dissipation capacity

Method used

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  • Steel roof truss with anti-seismic and energy-dissipation effect
  • Steel roof truss with anti-seismic and energy-dissipation effect
  • Steel roof truss with anti-seismic and energy-dissipation effect

Examples

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Effect test

Embodiment 1

[0026] Example 1: Reference figure 1 As shown, a steel roof truss with anti-seismic and energy-dissipating effects includes upper and lower rigid rods 2. The oblique web bar 5, the vertical web bar 4 and the oblique web bar 5 are arranged at intervals, and a plurality of cross flexible rods 1 are arranged on both sides of the vertical web bar 4 located in the center of the span, and the ends of the cross flexible rod 1 are hingedly connected with the rigid rod 2.

[0027] The cross flexible 1 rod is X-shaped, and there are two cross flexible rods 1, which are respectively arranged on both sides of the vertical web rod 4 in the center of the span.

[0028] The cross flexible rod 1 is round steel or flat steel.

[0029] The cross-sectional shapes and cross-sectional areas of all the cross-flexible rods 1 are the same, and meanwhile, the cross-sectional area A of the cross-flexible rods 1 is determined by the following method:

[0030] A=N / f y ;

[0031] Among them, N is the ...

Embodiment 2

[0039] Embodiment 2: A steel roof truss with anti-seismic and energy-dissipating effects, including upper and lower rigid rods 2, the two ends of the two layers of rigid rods 2 are hingedly connected with frame columns 3 respectively, and vertical web rods 4 are arranged between the two layers of rigid rods 2 And the oblique web bar 5, the vertical web bar 4 and the oblique web bar 5 are arranged at intervals, a number of cross flexible rods 1 are respectively arranged on both sides of the vertical web bar 4 located in the center of the span, and the ends of the cross flexible rod 1 are hingedly connected with the rigid rod 2 .

[0040] There are at least two cross flexible rods 1, and the cross flexible rods 1 are mirrored left and right with the vertical web rod 4 in the center of the span as the center, and can have a greater energy dissipation effect when subjected to loads in two directions.

[0041] The cross flexible rod 1 is round steel or flat steel.

[0042] The cro...

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Abstract

The invention relates to a steel roof truss with anti-seismic and energy-dissipating effects, which comprises two upper and lower layers of rigid rods. The vertical web bar and the oblique web bar are arranged at intervals, and a plurality of cross flexible bars are respectively arranged on both sides of the vertical web bar located in the center of the span, and the ends of the cross flexible bar are hingedly connected with the rigid bar. The steel roof truss provided by the invention greatly improves the seismic performance of the steel roof truss by arranging the cross flexible rods, and can be widely used in building roofs of factories in earthquake-resistant areas.

Description

technical field [0001] The invention relates to the construction field, in particular to a steel roof truss with anti-seismic and energy-dissipating functions. Background technique [0002] Trapezoidal steel roof truss is a common type of roof structure in long-span factory buildings. [0003] The traditional trapezoidal steel roof truss is composed of rigid rods connected by hinges. These rigid rods generally adopt double-angle steel, T-shaped steel or H-shaped steel and other cross-sections, which can not only bear tension, but also bear pressure. However, when the horizontal earthquake action reaches a certain level, Rigid rods under compression are easily out of work due to instability, resulting in brittle failure of steel roof trusses, poor structural ductility, and low seismic energy dissipation capacity. [0004] Therefore, how to design a steel roof truss so that it can still have good ductility and seismic performance under the condition of vertical load and stron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04C3/11
Inventor 周辉仁张广新
Owner 济南热电集团有限公司
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