Strengthening Strategy of Old Bridge in Indonesia (Tukad Yeh Bakung) by Using Optimization and Preservation Approach

I Nyoman Sutarja,Made Ari Ariarsha Sumekar,I Gede Adi Susila

doi:10.11648/j.jccee.20210602.13

I Nyoman Sutarja, Made Ari Ariarsha Sumekar + Show 1 more

Open Access

https://doi.org/10.11648/j.jccee.20210602.13

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Abstract

A reliable, integrated and sustainable highway road network system throughout the national territory needs to include an upgraded structural capacity of bridges; particularly Tukad Yeh Bakung bridge in Bali-Indonesia. It was essentially needed to improve transportation services to provide direct impacts of economic growth and social welfare locally. To upgrade structural capacity an old bridge has been done by applying a preservation method sustainably: maintenance and rehabilitation in order to keep the bridges provide services properly. This preservation method has also been intended to provide an acceptance and functional criteria (certification of life services) of bridge 50 up to 100 year, and further. An old bridge (Tukad Yeh Bakung) was built in 1977 located along the national road network between Denpasar and Gilimanuk with reference (stationing of km 54+400). The bridge was suffered with structural damages due to exceeded load services, earthquakes, and material degradation. The damages of bent was essentially needed to be preserved since the damages found such as cracked and porous on concrete deck/slab and exposed of slab/bending reinforcement which clearly hazard from corrosions as well as decreasing its capacity. Simple bridge preservation has been done by giving additional or replacement of flexural reinforcement as well as a confinement method for the concrete column. Ultimate capacity ratio (Mu/φMn) of bent has been evaluated and typical confinement method will also increase lateral load capacity of the pier and prevents of collapse (due to local and global/longitudinal buckling).

Highlights

Problems of this old bridge found to be interesting since the bridge located in Indonesian geology circumstance with high intensity of natural disasters event
The Tukad Yeh Bakung Bridge needs to be preserved, with several reasons such as: a) The 40-year-old Tukad Yeh Bakung Bridge, b) Visually, the Yeh Bakung Tukad bridge experienced some damage, especially bridge pillars such as cracks and porous concrete decking so that the bend and reinforcement strength is visible, Figure 2. c) change in the rules of bridge loading, especially due to earthquake loads, fulfillment of functional feasibility requirements that have an impact on the necessity for preservation of bridge structures. d) After a 3D Elementary Analysis was carried out, the Tukad Yeh Bakung bridge structure system resulted in preservation
Pushover analysis found that the greatest deflection occurred due to a combination of extreme loads 1 [1], in which Pillar-0 deflected 6.94 mm, for pillars with Pillar-1 reinforcement are 2.64 mm and Pillar-2 models are 1.55 mm

Summary

Introduction

Problems of this old bridge found to be interesting since the bridge located in Indonesian geology circumstance with high intensity of natural disasters event. The increasing of population and urban movement between district to district and beyond consideration provides degradation of bridge capacity due to old material structures has used and seismic event consists to make the bridge vulnerable. The Tukad Yeh Bakung Bridge needs to be preserved, with several reasons such as: a) The 40-year-old Tukad Yeh Bakung Bridge (built in 1977), b) Visually, the Yeh Bakung Tukad bridge experienced some damage, especially bridge pillars such as cracks and porous concrete decking so that the bend and reinforcement strength is visible, Figure 2. D) After a 3D Elementary Analysis was carried out, the Tukad Yeh Bakung bridge structure system resulted in preservation. The capacity of the Tukad Yeh Bakung bridge structure that has been built needs to be intensified routinely for the realization of a reliable, integrated and sustainable road network system throughout the national territory to support The Tukad Yeh Bakung Bridge needs to be preserved, with several reasons such as: a) The 40-year-old Tukad Yeh Bakung Bridge (built in 1977), b) Visually, the Yeh Bakung Tukad bridge experienced some damage, especially bridge pillars such as cracks and porous concrete decking so that the bend and reinforcement strength is visible, Figure 2. c) change in the rules (code) of bridge loading, especially due to earthquake loads, fulfillment of functional feasibility requirements that have an impact on the necessity for preservation of bridge structures. d) After a 3D Elementary Analysis was carried out, the Tukad Yeh Bakung bridge structure system resulted in preservation.

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Conclusion