Performance Evaluation of Wirerope Structures on Klepu Mulya Jelita Pedestrian Suspension Bridges, Cilacap

Abstract

Purpose: This study aims to review the performance of the cable structure of the pedestrian suspension bridge, namely the Klepu Mulya Jelita suspension bridge, including the cable tension value, deformation, and wire rope cable density factor referring to the Surat Edaran Menteri Pekerjaan Umum No. 02/SE/M/2010 concerning Guidelines for Planning and Implementation of Suspension Bridge Construction for Pedestrians.

Methods/Design: Adopting a quantitative method with a case study approach conducted on the Klepu Mulya Jelita suspension bridge located in Cilacap, Central Java with validation of manual calculation results and SAP 2000 analysis. The data analyzed in this research study are the properties of wire rope cables on the geometry of a class 1 pedestrian suspension bridge with a span of 80 meters through a review of the performance of wire rope cables including cable tension values, deformation, and wire rope cable density factors referring to Surat Edaran Menteri Pekerjaan Umum No. 02/SE/M/2010.

Findings: The results of manual calculations and SAP 2000 analysis show a difference in the main span cable tension value of 1.95%, a difference in the backstay span cable tension value of 1.5%, and a difference in the cable deformation value of 2.37%. The density factor of a wire rope cable greatly influences the results of the reviewed analysis. The final results of the indicators in the reviewed case study show that the forces obtained safe and below the permitted values ​​as referred to in Surat Edaran Menteri Pekerjaan Umum No. 02/SE/M/2010.

Practical implication: The results of this study indicate that the cable performance on this suspension bridge is safe. with the recommendations that can be given, namely efficiency in the size of existing cables used in suspension bridges with similar characteristics while still reviewing the reliability and safety factors of suspension bridges.