Cable-stayed bridge sectional cable system with prestressed cable saddle structure and fabrication and installation method thereof

A technology of prestressed cables and installation methods, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of cable breakage and insufficient fatigue strength, and achieve the goal of eliminating stress amplitude, reducing fatigue damage, and solving the problem of cable breakage Effect

Pending Publication Date: 2019-11-19
LIUZHOU OVM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to: provide a cable-stayed bridge segmented cable system with prestressed cable saddle structure and its produ...

Method used

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  • Cable-stayed bridge sectional cable system with prestressed cable saddle structure and fabrication and installation method thereof
  • Cable-stayed bridge sectional cable system with prestressed cable saddle structure and fabrication and installation method thereof
  • Cable-stayed bridge sectional cable system with prestressed cable saddle structure and fabrication and installation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0086] A segmented cable system of a cable-stayed bridge with a prestressed cable saddle structure:

[0087] like Figure 1-1 to Figure 1-3 Shown, the drag cable of the cable-stayed bridge segmented cable system of the band prestressed saddle structure is divided into three sections, including the first section drag cable 31, the second section drag cable 32, and the third section drag cable 33, so The second section of the cable 32 passes through the steel cable saddle 2, and after being pre-tensioned, it is anchored on both sides of the cable tower 1 through the cable saddle cable anchoring device, and the first section of the cable on both sides of the second section of the cable 32 The cable 31 and the third section of the cable 33 are cables with a connecting anchorage device 9 at one end, and the first section of the cable 31 and the third section of the cable 33 are respectively connected to the two sides of the second section of the cable 32 through the connecting devic...

Embodiment 2

[0094] A fabrication and installation method for the sectioned cable system of a cable-stayed bridge with a prestressed cable saddle structure:

[0095]It is the production and installation method of the sectioned cable system of the cable-stayed bridge with prestressed cable saddle structure described in the first embodiment, that is, the cable of a cable-stayed bridge is divided into three sections, and the second section is located in the cable-stayed bridge. On the cable tower of the bridge, the shaped steel cable saddle and the second section of the cable are self-contained and pre-tensioned and then anchored on the cable tower of the cable-stayed bridge to form a prestressed cable saddle structure system. The first section of the cable and the third section of the cable The cables are respectively connected on both sides of the second section of the cable; in the design, the number of prestressed tendons of the second section of the cable is increased to increase the forc...

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Abstract

The invention comprises a cable-stayed bridge sectional cable system with a prestressed cable saddle structure. The sectional cable system comprises a first-section cable, a second-section cable, a third-section cable and an arc-shaped profile steel cable saddle. The second-section cable passes through the profile steel cable saddle and is anchored on both sides of a cable tower through cable saddle cable anchor devices after being pre-tensioned. The profile steel cable saddle, the second-section cable, the cable saddle cable anchor devices and a spiral reinforcement jointly constitute the prestressed cable saddle structure. The number of the cable saddle cable anchor devices is two, and the two cable saddle cable anchor devices are arranged at both ends of the profile steel cable saddle correspondingly. Each cable saddle cable anchor device comprises an anchor base plate, an anchor plate with external threads and a clamping piece. Prestressed reinforcements of the second-section cableare anchored on the anchor plates; and the first-section cable with an anchor device at one end and the third-section cable with an anchor device at one end are correspondingly connected with both sides of the second-section cable through connecting devices. The sectional cable system can eliminate the stress amplitude in the second-section cable, reduce the fatigue damage of the cable, and fundamentally solve the problem of cable breakage caused by the insufficient fatigue strength of cable saddle cable with the small bending radius.

Description

technical field [0001] The invention relates to a cable-stayed cable system and a construction method thereof, in particular to a segmented cable-stayed cable system of a cable-stayed bridge with a prestressed cable saddle structure and a manufacturing and installing method thereof. Background technique [0002] Cable-stayed bridges are beautiful in shape, simple in structure, and highly economical in large and medium-span bridge types, so they are widely used in engineering construction around the world. As one of the most important structural components of a cable-stayed bridge, the cable system's safety, durability and applicability are closely related to the safety and normal use of the entire bridge. With the improvement of the design level, many cable-stayed bridges with beautiful shapes and novel designs have appeared one after another. [0003] The saddle-anchored cable system is convenient for construction, economical and beautiful, and is one of the most common ca...

Claims

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Application Information

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IPC IPC(8): E01D19/14E01D19/16E01D21/00
CPCE01D19/14E01D19/16E01D21/00
Inventor 孙长军王志超张志红沈殷李国平李华萍邹易清雷欢
Owner LIUZHOU OVM MASCH CO LTD
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