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A Modeling Method for Curved Girder Suspension Bridge Suspended on One Side

A modeling method and technology of suspension bridges, applied in instrumentation, geometric CAD, calculation, etc., to achieve the effect of solving complex modeling problems

Active Publication Date: 2019-12-03
NANJING FORESTRY UNIV
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Problems solved by technology

How to apply the current linear suspension bridge modeling technology to solve the problem of curved suspension bridge has become a key issue

Method used

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  • A Modeling Method for Curved Girder Suspension Bridge Suspended on One Side
  • A Modeling Method for Curved Girder Suspension Bridge Suspended on One Side
  • A Modeling Method for Curved Girder Suspension Bridge Suspended on One Side

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[0088] 1. Overview of Bridge Engineering

[0089] The main design parameters of this bridge are: the center line of the main girder is located on the circular curve of R=44.5m, the corresponding center angle is 150°, the bridge deck width is 3.1m, the bridge span is 87.8m, and the total length is 119m; the cable tower adopts cylindrical steel cable tower , with an angle of 63° to the ground, a back cable is set on the top, and the back cable is anchored on the ground anchorage; the main cable, sling and back cable are all made of carbon steel strand cables, with a yield strength of 1560MPa and a main cable diameter of 85mm , the mid-span vertical rise-to-span ratio is 1 / 13; the diameter of the sling is divided into two types: 23mm and 38mm, of which the diameter of the ordinary sling is 23mm, and the diameter of the sling directly connected to the tower is 38mm. The main cable is divided into three sections. The two ends of the mid-span main cable and the two side-span main ca...

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Abstract

The invention provides a modeling method of a lateral-suspension curved-beam suspended bridge, comprising the steps of 1) simplifying the lateral-suspension curved-beam suspended bridge into a 'linear-girder vertical-single-plane' suspended bridge according to the gravity equivalence principle, and calculating to determine initial linear form of each main cable; 2) turning side span main cables of the 'linear-girder vertical-single-plane' suspended bridge so that their anchor points overlap ground anchor points, and establishing a 'triple-fold girder vertical-cable-plane' suspended bridge model; 3) iterating cable angle and tension so that the main cables incline out gradually to finally form a bridge-forming model for the lateral-suspension spatial curved-bridge suspended bridge. 'Linearity-to-curve' conversion is achieved herein, modeling of a complex curved-beam suspended cable is realized ingeniously, calculation results are accurate, calculation efficiency is high, and an effective method is provided for designing and constructing a complex curved bridge.

Description

technical field [0001] The invention relates to a novel bridge structure finite element modeling method, namely a finite element modeling method for a curved beam suspension bridge suspended on one side, belonging to the field of bridge engineering and the technical field of structural finite element modeling calculation and analysis. Background technique [0002] Curved beam suspension bridge with one-side suspension is a new type of bridge, which has the characteristics of both suspension bridge and curved beam bridge. It is a new structural form combining two complex bridge types, namely suspension bridge and curved beam bridge. There are 2 such bridges in foreign countries, Kelheim Bridge and Sassnitz Bridge in Germany, and 3 San Diego Harbor Bridge, Liberty Bridge and Peace Bridge in the United States. It is the only landscape bridge built in Shanghai International Tourism Resort in 2015 in China. [0003] The curved beam suspension bridge suspended on one side is comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 王立彬李立斌陈林强
Owner NANJING FORESTRY UNIV
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