Comparison of Concrete and Steel Jacket Methods for Reinforcing A Concrete Bridge Pier by Numerical and Experimental Studies

Authors

Hadi Faghihmaleki, Assistant Professor, Department of Civil Engineering, Ayandegan Institute of Higher Education, Tonekabon, IranFollow

Abstract

Various rehabilitation and strengthening procedures have been developed in recent decades. A study to determine which methods can be implemented to increase the useful life of the bridge before strengthening must be performed. In this study, the seismic behavior of a reinforced concrete bridge pier with dimension 3.5 × 3.5 m, which was reinforced by two steel and a concrete jacket, was investigated. Nonlinear geometric models and materials were analyzed to estimate the seismic parameters of the pier. Results show an increase in energy absorption, ultimate strength, and ductility for the steel jacket, as well as a greater increase in the concrete jacket. Using a box concrete jacket with a dimension of 3.5 × 3.5 m, the increase in percentages of energy absorption, ultimate strength, and ductility were 38, 14, and 13, respectively. Therefore, the concrete jacket enhances the mentioned parameters.

Bahasa Abstract

Perbandingan Metode Jaket Beton Dan Baja Untuk Memperkuat Suatu Dermaga Jembatan Beton Melalui Kajian Numerik Dan Eksperimen. Berbagai prosedur rehabilitasi dan penguatan telah dikembangkan dalam dekade-dekade belakangan ini. Suatu kajian untuk menentukan metode yang mana yang dapat diimplementasikan untuk meningkatkan usia pakai jembatan sebelum penguatan harus dilakukan. Di dalam kajian ini, perilaku seismik suatu dermaga jembatan beton bertulang dengan dimensi 3,5 × 3,5 m, yang diperkokoh dengan dua jaket baja dan beton, diinvestigasi. Model-model geometri non linier dan bahan-bahan dianalisis untuk mengestimasikan parameter-parameter seismik dermaga. Hasil-hasilnya menunjukkan suatu peningkatan penyerapan energi, kekuatan akhir, dan kekenyalan jaket baja, dan juga peningkatan yang lebih besar pada jaket beton. Dengan menggunakan suatu jaket beton kotak dengan dimensi 3,5 × 3,5 m, kenaikan persentase penyerapan energi, kekuatan akhir, dan kekenyalan masing-masing adalah 38, 14, dan 13. Dengan demikian, jaket beton meningkatkan parameter-parameter yang telah disebutkan.

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Recommended Citation

Faghihmaleki, Hadi (2021) "Comparison of Concrete and Steel Jacket Methods for Reinforcing A Concrete Bridge Pier by Numerical and Experimental Studies," Makara Journal of Technology: Vol. 25: Iss. 2, Article 2.
DOI: 10.7454/mst.v25i2.3909
Available at: https://scholarhub.ui.ac.id/mjt/vol25/iss2/2