girder truss
2.This paper mainly makes the research of construction method for cast-in-situ concrete box girder of continuous girder bridge, using assembled highway bridge steel truss (often known as Bailey Truss) as the falsework, technical schemes for the falsework erected over river, particularly the rigid slant supports of the falsework on piers, and analysis, calculation methods and deformation of the falsework in accordance with the related tests in field.
4.Combined with practical engineering,the author discusses the construction technology and scheme of runway-crossing cast-in-situ box girder of overpass bridge in airport,analyzes and computational checks the design process of bailey truss,and illustrates organization safeguard measure,safety precaution and environmental protection measure of quality management and control,which has the meaning to guide similar engineering construction.
5.Development of load code and controlling load condition were discussed,Detailed analysis of cable-truss,bridge tower,stiffening girder and anchorage was done which proved that LSCTB is a competing bridge type.
6.The authors describe the modelling of a railway steel truss bridge with long-span in order to analyse the detailed distribution of stress for members and nodal plates in main truss, the detailed deformation and stress distribution due to frame effect on transversal bracing plane in truss bridge, and the detailed distribution of stress in important parts of the steel plate girder bridge with initially transversal deformation by using SSEB in this article.
7.The transverse stiffness limitation index—the permissible ultimate width/span ratio ［B/L］of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train—bridge time-variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge.The limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges.
8.(2) In respect of the sliding base-isolation analyses of the multistory building and thelong-span roof-truss structure and the friction pendulum isolation analyses of thecontinuous-girder bridge, the mechanical models of various isolation installations arebuilt, and a number of the modified continuous friction models with the compressiveforce of the sliding interface and the sliding velocity relative regarded as the independentvariables are proposed.
