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A Design Method for Co-rotating Stay Cables of Cable-Stayed Bridges

A design method and technology for cable-stayed bridges, which can be used in design optimization/simulation, calculation, special data processing applications, etc., and can solve problems such as cracking of cable towers

Active Publication Date: 2020-04-07
ANHUI TRANSPORTATION HLDG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a design method for cable-stayed bridges that can effectively solve the problem of tensile cracking in the anchor cable area of ​​the cable-stayed bridge in order to overcome the above-mentioned defects in the prior art.

Method used

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  • A Design Method for Co-rotating Stay Cables of Cable-Stayed Bridges
  • A Design Method for Co-rotating Stay Cables of Cable-Stayed Bridges
  • A Design Method for Co-rotating Stay Cables of Cable-Stayed Bridges

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Embodiment 1

[0088] see figure 1 , The cable-stayed bridge 1 with a main span of 806m is a two-way six-lane expressway bridge, using single-column cable towers 2, split steel box girders 3, and steel strand cable-stayed cables. Among the steel strands of 25 floors in each tower, the upper 22 floors adopt the same direction rotating cable system 4 .

[0089] see figure 2 , the co-rotating cable system 4 is composed of the cable 5, the saddle 6 set on the cable tower 2, and the anchor plate 7 set on the main beam 3, the specific design is as follows:

[0090] 1) see image 3 , Figure 5 , establish the geometrical and mechanical equations of the cable system in the cable system design coordinate system 8, and perform multiple cyclic correction calculations on the system until the accurate undetermined parameter U is obtained through the known parameter A:

[0091] A=[the vertical distance D from the anchorage point on the stay cable beam to the top of the beam g , distance Y from inter...

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Abstract

The invention relates to a design of an isodirectionally turning stay cable system of a cable-stayed bridge. The design comprises the following specific design operation steps that: establishing the geometry and mechanical equation of a stay cable system, carrying out multiple circulation correction calculation on the system until an accurate parameter U to be determined is obtained through a known parameter A; establishing a descriptive geometric equation of the outer surface of a cable tower, and calculating an accurate position of an exit point of a saddle on a tower; establishing the universal databases C, S and B of the stay cable, the saddle and an anchor tensile plate, and carrying out construction piece size design and material amount calculation; carrying out simulation lofting, checking conflicts, and correcting the design; and gathering design parameters, and carrying out material amount statistics. Compared with the prior art, the invention puts forward the method for carrying out the accurate design of the system on the isodirectionally turning stay cable system, the problems of new technology and difficulty in popularization of the stay cable system are solved, and the practical development and the large-scale application of the original technology of the isodirectionally turning stay cable of the cable-stayed bridge are prompted.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a design method for co-rotating stay cables of cable-stayed bridges. Background technique [0002] At present, cable-stayed bridges are showing a trend of accelerated development, especially in China, more and more cable-stayed bridges are being used in China's sea-crossing, river-crossing artery projects and urban traffic construction projects. But overall, the development trend of the span is relatively obvious, and the development of supporting technologies is relatively lagging behind. In particular, the worry about the cracking of the anchor cable tower wall of the concrete cable tower has always plagued every application of the cable-stayed bridge. [0003] In the traditional cable system of cable-stayed bridges, people have been developing various anchor cable structures to overcome the huge tension of the cables on the concrete tower wall. There are concrete to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/20G06T17/10
CPCG06F30/13G06F30/20G06T17/10
Inventor 胡可杨晓光马祖桥王凯王胜斌梅应华吴平平梁长海窦巍魏民夏伟石雪飞阮欣刘志权
Owner ANHUI TRANSPORTATION HLDG GRP CO LTD
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