Jindong Bridge: Suspension Bridge with Steel Truss Girder and Prefabricated RC Deck Slabs in China

2018 ◽  
Vol 29 (2) ◽  
pp. 315-318 ◽  
Author(s):  
Wenming Zhang ◽  
Zhao Liu ◽  
Song Xu
Keyword(s):  
Suspension Bridge ◽  
Deck Slabs ◽  
Steel Truss ◽  
Steel Truss Girder

Application of the Track-Cable Erecting System for Steel Truss Girder in Aizhai Suspension Bridge

2012 ◽  
Vol 204-208 ◽  
pp. 2056-2060
Author(s):  
Nian Chun Deng ◽  
Xian Hui Liu ◽  
Nian Lai Zhang ◽  
Liu Yi Wu
Keyword(s):  
Engineering Application ◽  
Suspension Bridge ◽  
Scale Model ◽  
Steel Truss ◽  
New Construction ◽  
Main Cables ◽  
Steel Truss Girder ◽  
Main Bridge ◽  
Bearing Structure ◽  
Cable Tracking

Aizhai Bridge is a stiffening steel truss girder suspension bridge and the main bridge consists of three spans of 242m+1176m+116m. It flies over Dehang Canyon, which is cliffy and steep, the depth between the designed elevation and the ground is 355 meters. In order to overcome the problems happened during the transportation, a new construction plan for the erection of steel truss girder is developed, combining the lifting technology with the cable-tracking transportation. Simply speaking, main cables and hangers are used as bearing structure, the track cables hanged on the hangers are used as transportation track. The transport vehicles system run along the tracking cables to deliver the steel truss girder, and the deck unit erecting system do the lifting job. In this paper, the scale model experiment and full scale model test of the track-cable transferring system are introduced, the design and test of erection gantry for deck unit are described. Finally, the engineering application of the track-cable erecting system is described. The results of experiment and engineering application show that the transportation and erection work of steel truss girder can quickly be completed by using the new construction plan. It is safe and economic solution, and has very broad prospect and practical value for the construction of suspension bridge and arch bridge.

Experimental Investigation into Aerodynamic Stability of Narrow Steel Truss Girder Suspension Bridge

2011 ◽  
Vol 255-260 ◽  
pp. 938-941
Author(s):  
Hua Bai ◽  
Jia Wu Li
Keyword(s):  
Wind Tunnel ◽  
Geographical Location ◽  
Wind Tunnel Test ◽  
Suspension Bridge ◽  
Mitigation Measures ◽  
Aerodynamic Stability ◽  
Steel Truss ◽  
Section Model ◽  
Wind Climate ◽  
Steel Truss Girder

A narrow steel truss girder suspension bridge was designed for pedestrian and livestock in pasture in Xinjiang Province, China. For the complex wind climate at bridge site, the cautious designers resorted to wind tunnel test to confirm the aerodynamic stability of the bridge. The analysis and results from wind tunnel test conducted in Chang’an Wind Tunnel Laboratory indicated the original scheme must be changed considerably to improve the aerodynamic stability under action of wind. Considering the shape feature of Siudirgol Bridge and its geographical location, section model with such mitigation measures as auxiliary cables and central buckles were re-tested in wind tunnel joint with analysis. The auxiliary cables and central buckles can increase considerably the fundamental frequency of the bridge and hence the critical wind speed of flutter.

Dynamic Response of a New Railway Emergency Steel Truss Girder under the Moving Train Loads

2010 ◽  
Vol 139-141 ◽  
pp. 2405-2408
Author(s):  
Yao Hui Zhang ◽  
Hai Long Wang
Keyword(s):  
Traffic Safety ◽  
Dynamic Responses ◽  
Coupling Vibration ◽  
Railway Bridges ◽  
Technical Requirements ◽  
Structural Details ◽  
Steel Truss ◽  
Object Of Study ◽  
Steel Truss Girder ◽  
New Situation

In China, a new railway middle-span emergency steel truss girder, which can adapt to the technical requirements about quickly repairing the damaged railway bridges, is developed under the new situation. The old emergency steel truss girder for the railway bridges can not adapt to the current technical requirements. So, the new railway middle-span emergency steel truss girder (hereinafter referred to as the new girder) is developed after hard work. The great changes on the structure, the connections, the structural details and the multi-purpose have taken place on it compared to the existing old similar girder. In this paper, the structure and technical characteristics of the new girder are introduced. In order to improve the new girder’s design, the dynamic responses of the new girder are calculated using the train-bridge coupling vibration theory. In the paper, the 32m-span girder are the main object of study. The vibration-related laws are revealed versus the different train speeds, and the proposals about the largest traffic safety speed are given.

Partial Prestressing of Long Span Steel Truss Girder

2013 ◽  
Vol 101 (6) ◽  
pp. 1-4
Author(s):  
Ekasit Limsuwan ◽  
Suchart Chayochaichana ◽  
Uthai Lerksirirat
Keyword(s):  
Long Span ◽  
Steel Truss ◽  
Steel Truss Girder

Research on the Aerodynamic Measures Impact on Flutter Stability of Steel Truss Suspension Bridge

2013 ◽  
Vol 791-793 ◽  
pp. 378-381
Author(s):  
Hua Bai ◽  
Sen Hua Huang
Keyword(s):  
Wind Speed ◽  
Wind Tunnel ◽  
Suspension Bridge ◽  
Wind Tunnel Experiment ◽  
Attack Angle ◽  
Torsional Stiffness ◽  
Critical Wind Speed ◽  
Guide Plate ◽  
Steel Truss ◽  
Better Than

The flutter stability of the steel truss suspension bridge is hard to reach the requirement of the wind resisting stability when lacks the torsional stiffness. This paper discusses the influence of aerodynamic measure combination, such as central stabilizer, air director enclosed anti-collision bar and so on, towards the flutter stability of steel truss through the wind tunnel experiment of the bridge of Liu Jia gorge. The result shows: the effect of using both the upper and lower stabilized plate is better than separated used it. when sectionalized dispose upper stabilized plate, the flutter critical wind speed of attack angle will decrease rapidly. Outlaying the horizontal guide plate is better than internally installed; The flutter stability of different attack angle tend to be balanced by widening the horizontal guide plate. The anti-collision bar can be functionalized as the central stabilizer by heightening and enclosing, and effectively increase the critical wind speed of different attack angles of the high truss suspension bridge.

Research on Radial Basis Function Network Application in Steel Truss Girder Bridge Damage Identification

2014 ◽  
Vol 536-537 ◽  
pp. 352-355
Author(s):  
Zhong Hui Wang
Keyword(s):  
Structural Damage ◽  
Damage Identification ◽  
Radial Basis Function Network ◽  
New Method ◽  
Structure Damage ◽  
Steel Truss ◽  
Bridge Damage ◽  
Girder Bridge ◽  
Steel Truss Girder ◽  
Better Than

Damage alarm is an important step among structure damage identification. Its objective is to evaluate the structure health. the existing damage alarm methods are mostly based on BPNN without thinking over testing noise. Therefore, a new method based on hybrid algorithm RBFNN is proposed for structure damage alarm system in this paper. The experiment results of steel truss girder bridge show that the new method is better than BPNN for structural damage alarm.

Sign in / Sign up

Export Citation Format

Share Document