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Single-layer prestressing frame structure

A prestressed frame and prestressed technology, applied to structural elements, building components, building structures, etc., can solve problems such as uneven distribution of internal forces, achieve uniform distribution of internal forces, save structural materials, and achieve large economic spans

Inactive Publication Date: 2013-05-15
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to overcome the above-mentioned shortcomings of uneven distribution of internal force in the traditional frame, and to provide a single-layer prestressed frame structure by using prestressing technology to enable the frame to span a large economic span

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 , figure 2 and image 3 As shown, a single-story prestressed frame structure with a structural span of more than 40m is composed of columns 11, beams 12, corner bracing systems and tensioning string systems. The columns 11 and beams 12 are welded and connected by H-shaped steel to form a frame. A corner bracing system is provided at the inner diagonal position of the connection point of the column 11 and the beam 12, and the corner bracing system is composed of a "T"-shaped brace 22 and a prestressed cable 21, and the "T"-shaped brace 22 is composed of Two round steel pipes are intersected and welded, and the prestressed stay cables 21 are steel wire ropes. The lower end of the "T"-shaped strut 22 is fixedly connected to the connection point between the beam 12 and the column 11, and the upper end of the "T"-shaped strut 22 is provided with a center line that is aligned with the axis of the beam 12 and the axis of the column 11. A plane through hol...

Embodiment 2

[0026] The structural span is between 15m and 40m, and the string tension system under the beam in Embodiment 1 can be omitted, which can be specifically implemented according to the following scheme:

[0027] Such as Figure 4 As shown, a single-layer prestressed frame structure is composed of columns 11, beams 12 and corner bracing systems. The columns 11 and beams 12 are welded and connected by H-shaped steel to form a frame. A corner bracing system is provided at the diagonal line inside the connection point of the beam 12 and the column 11, and the corner bracing system is composed of a "T" type brace 22 and a prestressed cable 21. The "T" type brace 22 is formed by intersecting welding of two circular steel pipes, and the prestressed stay cable 21 is a steel wire rope. The lower end of the "T"-shaped strut 22 is fixedly connected to the connection point between the beam 12 and the column 11, and the upper end of the "T"-shaped strut 22 is provided with a center line th...

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Abstract

The invention discloses a single-layer prestressing frame structure. The single-layer prestressing frame structure comprises beams and columns which are fixedly connected. The single-layer prestressing frame structure is characterized in that: a knee-brace system is further arranged at inside diagonal positions of the connections of the beams and the columns; and a string-tensioning system consisting of two T-shaped brace rods and a prestressed bracing cable is further arranged below the beams. According to the invention, as the prestressing technology is adopted, the distribution of forces in the frame is even; and the frame can span a large economic span, so that the anti-seismic performance of the structure is enhanced, and the single-layer prestressing frame structure is suitable for single-layer lightweight steel structures.

Description

technical field [0001] The invention belongs to the technical field of building structures, and relates to a large-span prestressed frame structure, more specifically, to a single-layer prestressed frame structure. Background technique [0002] The production and installation technology of steel frame structure is mature, so it has a wide range of applications. However, since the horizontal beam is a circuitous force-bearing member, the general relational expression of its mid-span deflection is That is, the mid-span deflection grows with the span as the fourth power. As a commonly used I-shaped beam, its moment of inertia is approximately That is, the moment of inertia increases quadratically with the beam height. In other words, if the traditional frame wants to span a large span, in order to ensure that the mid-span deflection of the beam meets the code requirements, the beam section needs to grow squarely with the span. As a result, the economic span that tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/342E04C5/08
Inventor 唐柏鉴
Owner JIANGSU UNIV OF SCI & TECH
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