EVALUASI JEMBATAN DAN SABO DISUNGAI GENDOLYOGYAKARTA PASCA ERUPSI GUNUNG MERAPI 2010

• Main Authors: , Ali Akbar, , Prof.Ir.Iman Satyarno, ME., Ph.D.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2012
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/98919/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=54590
• Institution: Universitas Gadjah Mada

Among the 129 active volcanoes are located in Indonesia, Merapi, including the most famous, especially in terms of vulkaniknya activity. Mount Merapi in the form of natural disasters often cause eruptions with lava flows that often cause casualties or property of the human soul. October 26, 2010 a very large eruption of Mount Merapi, which spend millions of m 3 of hot lava flowing into the rivers that disgorge at Merapi. Continuing impact of the eruption of Mount Merapi, which is in the form of cold lava flood of potentially damaging bridge and sabo. Degradation sabo (oprit) and the bridge is usually caused by the durability and loading of vehicles passing over it, but in this case the bridge damage caused by the flow of water is so powerful, because it flows together, in this case is rock and sand that has hardness of material constituent together with pier, which is concrete. In view of the bridge is a good means of public access to social and economic interests, it is important to evaluate condition of existing bridges and sabo which has bridge facilities (oprit) after the 2010 eruption of Mount Merapi. The method used in evaluating the bridge is BMS (Bridge Management System) and the Standards for the assessment of buildings using a design Sabo (draft) Urgent Disaster Reduction Project for Mt. Merapi Operation and Maintenance for Sabo Facilities and drafting priorities for sabo use AHP (Analytical Hierarchy Process) while for the bridge using the condition of each bridge. Cold lava is so large damaging some sabo components on the component, particularly sub dam and apron. Those elements are covered with sediment material so that the component is not visible anymore. While the influence of cold lava on the bridge is not so great, the structure of the bridge is still in good condition, only damage to the watershed and river safety building. The method used in the assessment of bridges and sabo priorities that generate a sequence of handling the bridge along Gendol River include Tulung Hulu Bridge, Klurak Bridge, Bogem II Bridge, Bogem I Bridge, and Bogem III Bridge, and to the scale of priorities in terms of the index condition sabo among others GE-C Plumbon, GE-C Bronggang, GE-C Rogobangsan, GE-C Jambon, GE-C7 Morangan. Judging from the capacity, among others GE-C7 Morangan, GE-C Plumbon, GE-C Rogobangsan, GE-C Jambon, GE- C Bronggang.