TRANSVERSE LOAD DISTRIBUTION OF SKEW CAST-IN-PLACE CONCRETE MULTICELL BOX- GIRDER BRIDGES SUBJECTED TO TRAFFIC CONDITION

Authors

  • IMAN MOHSENI PH.D CANDIDATE, DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING
  • ABDUL KHALIM ABDUL RASHID PROFESSOR OF DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING,FACULTY OF ENGINEERING,UNIVERSITI KEBANGSAAN MALAYSIA ( NATIONAL UNIVERSITY OF MALAYSIA),43600 UKM BANGI,SELANGOR, MALAYSIA.

Keywords:

SKEWED BRIDGES, VEHICLE, LOAD DISTRIBUTION FACTOR, FINITE ELEMENT ANALYSIS

Abstract

CONCRETE MULTICELL BOX-GIRDER BRIDGES ARE A COMMON CHOICE AMONG THE DESIGNERS FOR VARIOUS RANGES OF BRIDGES.  IN ORDER TO PROVIDE SAFER AND GREATER SPEED OF TRAFFIC, THE ROADWAY IS BUILT AS STRAIGHT AS POSSIBLE. THE USE OF SKEWED BRIDGES HAS INCREASED CONSIDERABLY IN THE RECENT YEARS FOR ROADWAY. THE SKEWED BRIDGES HAVE QUITE DIFFERENT MECHANICAL BEHAVIOR FROM THE STRAIGHT BRIDGES, ALTHOUGH FOR SKEW ANGLES LESS THAN 20 DEGREES, IT IS REASONABLY SAFE TO IGNORE THE EFFECT OF SKEW ANGLES AND ANALYZE THAT AS THE RIGHT BRIDGE. IN THIS STUDY, IN DEVELOPING AN ANALYTICAL SOLUTION, AN EXTENSIVE PARAMETRIC STUDY WAS CARRIED OUT TO DETERMINE THE MAXIMUM POSITIVE AND NEGATIVE STRESS DISTRIBUTION FACTORS AND TO CALCULATE THE MAXIMUM DISTRIBUTION FACTOR OF DEFLECTION ALONG THE MID-SPAN OF SKEWED MULTICELL BOX-GIRDER BRIDGES. A TOTAL OF 240 REPRESENTATIVE BRIDGES ANALYTICAL MODELS WERE SELECTED AND ANALYZED USING SAP2000 FINITE ELEMENT SOFTWARE. IT WAS FOUND THAT THE SPAN LENGTH, NUMBER OF BOX, NUMBER OF LANE AND SKEW ANGLES SIGNIFICANTLY AFFECTED THE DISTRIBUTION FACTORS OF STRESS AND DEFLECTION. FINALLY, THE SEVERAL EQUATIONS WERE PROPOSED FOR STRESS AND DEFLECTION DISTRIBUTION FACTORS OF MULTICELL BOX-GIRDER BRIDGES FOR THE APPLICATION OF AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS LOAD AND RESISTANCE FACTOR DESIGN LIVE LOADS.

Author Biographies

IMAN MOHSENI, PH.D CANDIDATE, DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING

DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING,FACULTY OF ENGINEERING,UNIVERSITI KEBANGSAAN MALAYSIA ( NATIONAL UNIVERSITY OF MALAYSIA),43600 UKM BANGI,SELANGOR, MALAYSIA.

ABDUL KHALIM ABDUL RASHID, PROFESSOR OF DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING,FACULTY OF ENGINEERING,UNIVERSITI KEBANGSAAN MALAYSIA ( NATIONAL UNIVERSITY OF MALAYSIA),43600 UKM BANGI,SELANGOR, MALAYSIA.

DEPARTMENT OF CIVIL AND STRUCTURAL ENGINEERING,FACULTY OF ENGINEERING,UNIVERSITI KEBANGSAAN MALAYSIA ( NATIONAL UNIVERSITY OF MALAYSIA),43600 UKM BANGI,SELANGOR, MALAYSIA.

Published

2013-01-28

Issue

Section

Articles