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Suspension bridge with high torsional rigidity

A torsional stiffness, suspension bridge technology, applied in the field of suspension bridges with high torsional stiffness, can solve the problems of large deflection and vibration, low stiffness of suspension bridges, etc., and achieve the effect of increasing cross-sectional area, increasing torsional stiffness, and increasing the number of suspension rods

Active Publication Date: 2015-05-06
林同棪国际工程咨询(中国)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the suspension bridge can make full use of the strength of the material, and has the characteristics of low material consumption and light weight, the spanning capacity of the suspension bridge is the largest among the bridges of various systems; Problems with Deflection and Vibration

Method used

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  • Suspension bridge with high torsional rigidity
  • Suspension bridge with high torsional rigidity

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Embodiment Construction

[0014] figure 1 It is a schematic diagram of the bridge transverse section structure of the present invention, figure 2 for figure 1 Along the A-A cross-sectional view; the suspension bridge with high torsional rigidity of the present embodiment includes a main girder 1, a cable tower 2, a main cable 3 and a suspender 4, and the main cable 3 is one and is located on the longitudinal center elevation of the main girder 1. The suspenders 4 are distributed on both sides of the main girder laterally for suspending the main girder through the main cables, so that the main cables 3, the suspenders 4 and the main girder 1 form a structure with a triangular cross section in space; as shown in the figure, the main cables 3 , Suspender 4 and main girder 1 form a structure whose cross-section is a triangular space. In the figure, the triangular structure can be clearly shown, and only three suspenders are shown on each side. The specific structure is in figure 2 中 means; quantity; in...

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Abstract

The invention discloses a suspension bridge with high torsional rigidity. The suspension bridge comprises a main beam, a cable bent tower, a main cable and suspension rods, wherein the main cable is arranged on a longitudinal central elevation of the main beam, the suspension rods are arranged on two transverse sides of the main beam and used for suspending the main beam by virtue of the main cable, so that the main cable, the suspension rods and the main beam form a structure with the cross section in a space triangular shape; by utilizing the stability of the triangle, a box-beam structure like the triangle is formed, the overall torsional rigidity and torsional vibration frequency of the suspension bridge can be fundamentally improved, the critical wind speed for torsional instability under the calm wind can be directly improved, the ratio of the torsional vibration frequency and the vertical vibration frequency also can be increased, the critical wind speed of the vibration can be increased, and the safety of the large-span suspension bridge can be guaranteed; moreover, materials and cost of the existing suspension bridge are not increased, the cross section can be increased only by adopting one main cable, the number and cross section of the suspension rods can be increased, and the torsional rigidity can be further improved.

Description

technical field [0001] The invention belongs to the field of bridge engineering, in particular to a suspension bridge with high torsional rigidity. Background technique [0002] Suspension bridge is a bridge whose main load-bearing component is the main cable bearing the tension, and is mainly composed of main cable, cable tower, suspender, and main girder. Because the suspension bridge can make full use of the strength of the material, and has the characteristics of low material consumption and light weight, the spanning capacity of the suspension bridge is the largest among the bridges of various systems; Deflection and vibration issues. [0003] The most important thing to consider in the design of all super-long-span bridges, including suspension bridges, is the influence of wind; and due to the structural characteristics of suspension bridges, the torsional moment due to wind is a more obvious factor than the influence of vertical and lateral forces . In fact, the to...

Claims

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Application Information

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IPC IPC(8): E01D11/02
CPCE01D11/02
Inventor 邓文中
Owner 林同棪国际工程咨询(中国)有限公司
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