RESEARCH THE INFLUENCE OF STIFFNESS OF BEAM ON THE FORCE TRANSMISSION TO THE PONTOON AND ON THE MOMENT IN THE BEAM DUE TO CONCENTRATED LOAD FOR PONTOON-SERAPATE FLOATING BRIDGE

Abstract

The pontoon-separate floating bridges have many advantages to apply to the construction of civil floating bridges in Vietnam. This article presents the study of the influence of beam stiffness on the force transmission of concentrated load to the pontoon and the bending moment in the beam caused by this load, as a basis for designing civil poonton bridge to carry loads for small tonnage motor vehicles serving rural traffic. The author uses theoretical research methods using SAP2000 software. The results show that the moment in the beam is directly proportional to the stiffness of the beam. The transmission of force to pontoon away from the force application point is also directly proportional to the stiffness of the beam. Initially, the force transmitted to the pontoon near the force application point is inversely proportional to the beam stiffness, and then directly proportional to the beam stiffness.