TY - JOUR AU - Bambang Supriyadi, AU - Suprapto Siswosukarto, AU - Muslikh, AU - Andreas Triwiyono, PY - 2020/12/28 Y2 - 2024/03/28 TI - ECONOMIC REVIEW OF VARIATION OF PRESTRESSED GIRDER LENGTH ON BRIDGE CONSTRUCTION PRACTICES JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 19 IS - 76 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/1098 SP - 165-172 AB - <p>In the last decade, long-span continuous beam bridges have been built to meet the need of the total<br>bridge length requirements for obstacle avoidance. In almost 100 years of development of bridge construction <br>coupled with the development of concrete technology, the maximum bridge length, which was originally about 20 <br>m, currently has reached a length of 50 m or longer with the use of prestressed construction. The longer girder <br>length will reduce the number of pillars, minimize the possibility of damage to the pillars due to local scouring or <br>expand the coverage of the free area under the bridge. This study aimed to evaluate the economical aspect of the <br>use of prestressed girders with length variations of 40 m, 50 m, and 60 m. The analytical calculations were carried <br>out based on the applicable standards of bridge design. The results of the study indicated that the most economical <br>configuration for a long span bridge (200m-400m) is the use of a prestressed girder length of 50 m with a girder <br>cross-section height of 2.10 m. However for 480m bridge lengths, 60m PCI girder lengths tend to start out lower. <br>It can be concluded that for a longer bridge span, a longer PCI girder is also required.</p> ER -