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

Analysis of Effect of Fetching Girder from Trestle of Long-Span Steel Truss Bridge under Cantilever Erection

2014 ◽  
Vol 587-589 ◽  
pp. 1522-1526
Author(s):  
Xu Luo ◽  
Xin Sha Fu ◽  
Li Xiong Gu ◽  
Lu Rong Cai
Keyword(s):  
Utilization Efficiency ◽  
Large Span ◽  
Long Span ◽  
Steel Truss Bridge ◽  
Angle Change ◽  
Steel Truss ◽  
Truss Bridge ◽  
Steel Truss Girder

A large span steel truss bridge, it assembles "high, big, difficult, new, deep, steep, dangerous, heavy", etc., "eight" features in a body. In order to reduce the number of transportation ships and make the erection convenient, this paper studies a set of revolving beam erection scheme to improve the utilization efficiency of trestle. Through calculation, it is found that fetching girder directly from trestle is feasible. cantilever erection of the girder , The main truss linearis of the steel truss girder upstream and downstream has slightly deviation with the operating angle change of the cantilever crane and it need to stop lifting when monitoring and measuring, and the mast should be placed along the bridge direction.

Structure-borne noise from long-span steel truss cable-stayed bridge under damping pad floating slab: Experimental and numerical analysis

2020 ◽  
Vol 157 ◽  
pp. 106988 ◽  
Author(s):  
Lin Liang ◽  
XiaoZhen Li ◽  
Jing Zheng ◽  
KangNing Lei ◽  
Hongye Gou
Keyword(s):  
Numerical Analysis ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Steel Truss

Seismic Isolation Analysis on Long-Span Platform Bridge Connecting Twin-Tower Structures

2011 ◽  
Vol 255-260 ◽  
pp. 1225-1229
Author(s):  
Huang Sheng Sun ◽  
Li Nuo Cheng ◽  
Shi Hai Chen
Keyword(s):  
Seismic Isolation ◽  
Seismic Responses ◽  
One Pot ◽  
Isolation System ◽  
High Position ◽  
Long Span ◽  
Steel Truss ◽  
Story Drift ◽  
Isolation Systems ◽  
Rubber Bearings

In order to mitigate the seismic response of twin-tower structure linked by a steel truss platform bridge, as well as to reduce temperature force in the steel truss, eight groups of combined isolation system, each consisting of one pot-type bearing and four rubber bearings, were designed to connect the upper platform bridge to the lower supporting reinforced concrete towers. The features and working principles of the high-position isolation system were described. Then the seismic responses, including displacement, story drift and floor acceleration, of the structure with the isolation systems were calculated and compared with those of the structure with hinge joints in lieu of isolation. It is found that both the structural seismic responses and the temperature forces in the large-span mega-truss structure can be reduced by the high-position isolation system.

Study on the Mechanical Behavior of Long-Span Steel Truss Transfer Storey

2013 ◽  
Vol 838-841 ◽  
pp. 219-226
Author(s):  
Ming Wei He
Keyword(s):  
Mechanical Behavior ◽  
Concrete Beam ◽  
Deformation Analysis ◽  
Steel Girder ◽  
Load Effect ◽  
Long Span ◽  
Steel Material ◽  
Staged Construction ◽  
Steel Truss ◽  
Stress And Deformation

The analysis to the staged construction of the long span steel transfer truss was performed. The focus was on the stress and deformation analysis of the transfer truss, the interactions of the transfer member with the concrete tube, and the combination analysis of the steel girder and concrete beam. It was proved that the method of staged construction can get the good result that can make full use of the characteristic of the steel material, make steel truss bear more load effect in the construction stage. So the load to the concrete tube is lessened, which makes the load effect of the structure is more rational. Some advices for the construction and design of steel transfer truss is also provided. Keywords:Steel truss; Transfer story; Staged Construction.

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.

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