The Main Structure of the Prestress Bridge: Ultimate Calculation Analysis Using Bridge Management System (BMS 1992) Planning Method

Abstract

One of the functions of the bridge is as a medium between two parts of the road that are cut off, the existence of a bridge construction facility is very beneficial for the local community from an economic and social perspective. This analysis aims to determine the dimensions of the structure that will be used in determining the forces acting on the main structure of the bridge, especially the ultimate force in controlling the beams in the main structure. The main beam uses AASHTO standard prestressed beam type V, with a beam height of 1600 mm, with an initial prestressing force of F = 691943,478 Kg and after calculating the initial prestressing loss of 20%. By controlling the stress that occurs at the time of transfer (jacking) on the top fiber of 24,457 Mpa and on the bottom fiber of -130.618, the stress when the load is off when the top fiber is -13,033 Mpa and at the bottom fiber is -7,653 Mpa, the stress when the load is on at the top fiber of -13.033 Mpa and at the bottom fiber of -7.653 Mpa. Keywords: Beam dimensions, prestressing force, ultimate load.