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Pull rod arch bridge

A tie-rod, arch bridge technology, applied in arch bridges, bridges, bowstring bridges, etc., to achieve the effects of improving dynamic characteristics, improving in-plane stability, and increasing strength and bearing capacity

Active Publication Date: 2018-08-17
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a new arch bridge---tie-rod arch bridge in view of the outstanding problems existing in the existing overhead arch bridge.

Method used

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Examples

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Embodiment

[0090] The span arrangement of the tie-rod arch bridge in this embodiment is the same as that of Chongqing Wanzhou Yangtze River Bridge (total investment 168 million yuan). Specifically, it is: a tie rod arch bridge, mainly composed of arch rib 1, main girder 2, tie rod 3, column 4 and bridge pier 5; 1 / 4 or 3 / 4 of the connection, the vertical force component of the tie rod 3 is directly transmitted to the foundation through the pier 5, and the horizontal component force is balanced by the main girder 2. The added tie rod 3 not only reduces the calculated span of the arch rib 1, but also strengthens the weak part of the arch rib 1, and at the same time shares part of the vertical load, so that the strength bearing capacity and in-plane stiffness of the structure are improved. In addition, the tensile force of the tie rod 3 also produces a positive non-directional force effect on the arch rib 1, which improves the out-of-plane stability of the structure. The strength, stiffness...

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Abstract

The invention discloses a pull rod arch bridge. The pull rod arch bridge mainly comprises an arch rib, a main beam, pull rods, vertical columns and piers. The two ends of the main beam are supported on abutments or the piers. The arch rib is fixedly connected with an abutment. The pull rods are arranged symmetrically, the upper ends of the pull rods are connected with the ends of the main beam, the lower ends of the pill rods are connected to the 1 / 4 position and 3 / 4 position of the arch rib, the vertical component force of the pull rods is transmitted directly to a foundation through the piers, and the horizontal component force of the pull rods is balancedby the main beam. External force provided by the pull rods only adds elastic restraint to the 1 / 4 position and the 3 / 4 position of thearch rib, the integrity of the structure is strengthened, and the mechanical properties of the structure are greatly improved. In addition, the pull rods further reduces the calculated span of the arch rib and strengthens the weak part of the arch rib, and at the same time, partial vertical loads are shared, and the strength bearing capacity and in-plane stiffness of the structure are improved. In addition, the tension of the pull rods produces a positive non-orienting force effect on the arch rib, and the out-of-plane stability of the structure is improved.

Description

technical field [0001] The invention belongs to an arch bridge system, in particular to a tie rod arch bridge. Background technique [0002] Arch bridges are one of the earliest and most widely used bridge types by humans. Arch bridges have a long history, and they are beautiful in appearance, light in structure and large in spanning capacity. Under the action of vertical load, the two ends of the arch are not only subjected to the vertical reaction force, but also the horizontal thrust, so that the bending moment in the arch is greatly reduced. The arch is the main structure that bears the pressure, so it can give full play to the characteristics of the material, and is widely used in bridge engineering, water conservancy engineering and construction engineering. The arch is a unique structural form, which can clearly express the flow of force and the appearance of aesthetics. [0003] As an ancient bridge type, the arch structure system has the longest history, strong c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D4/00
CPCE01D1/005E01D4/00
Inventor 谢肖礼邱辰喻泽成覃霞
Owner GUANGXI UNIV
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