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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Journal of Geoscience, Engineering, Environment, and Technology Civil Engineering Dimension Sondir JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah

Junaedi Utomo

Program Studi Magister Teknik Sipil, Universitas Atma Jaya, Yogyakarta

Author-ID : 545987

Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Environmental Science Physics Social Sciences Transportation

Published : 13 Documents Claim Missing Document

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Articles

Title

Seismic Retrofitting of Irregular Pre-80s Low-rise Conventional RC Building Structures Han Ay Lie; Junaedi Utomo; Hsuan-Teh Hu; Lena Tri Lestari
Civil Engineering Dimension Vol. 23 No. 1 (2021): MARCH 2021
Publisher : Institute of Research and Community Outreach - Petra Christian University

A resilience and seismic safety evaluation method of under-qualified concrete structures designed based on codes prior to the introduction of earthquake provisions is presented. A numerical method for evaluating and improving a structure’s performance and resilience through jacketing and Carbon Fiber Reinforced Polymers (CFRP) retrofitting was developed. The model analyzed the structure’s existing condition, inadequate elements were identified, and segments that required strengthening were determined. Retrofitting and external reinforcing techniques were applied, and their effectiveness evaluated. Elements identified as insufficient were subjected to a strengthening iteration process to ensure that all qualifications were fulfilled. It was proven that the numerical simulation was accurate, cost-effective and time-saving in evaluating deficient structures and the effectiveness of their strengthening methods. The numerical model and analysis in conjunction with the technology of jacketing and CFRP retrofitting provide a fast and straightforward solution for older structures in ameliorating their resilience and overall performance

Experimental Investigation on the Failure Behavior of Carbon Fiber Reinforced Polymer (CFRP) Strengthened Reinforced Concrete T-beams Junaedi Utomo; Muhammad Nur Khusyeni; Windu Partono; Ay Lie Han; Buntara S. Gan
Civil Engineering Dimension Vol. 23 No. 2 (2021): SEPTEMBER 2021
Publisher : Institute of Research and Community Outreach - Petra Christian University

Carbon Fiber Reinforced Polymers (CFRP) are widely used as external concrete reinforcement. The behavior of T-beams strengthened in shear and flexure using CFRP sheets and plates was studied to analyze the load carrying capacity and failure mode as compared to conventional concrete members. The bonding response of the plate-to-concrete was investigated by comparing a specimen with a plate anchored at the far ends, one without anchoring. The sheets were in situ wet lay-up, the plate was pre-impregnated and pultruded during manufacturing. The test result suggested that this integrated strengthening method notably improved the load-carrying capacity, it was also demonstrated that anchoring had a positive but insignificant effect on the moment capacity and deformation. The influence of anchoring was noteworthy from the point of view that it shifted the failure mode from debonding to CFRP plate rupture. The most important factors influencing the behavior of CFRP strengthened beams are outlined.

Co-Authors Abda Abda Ade Lisantono, Ade Antonius Antonius Ay Lie Han Buntara S. Gan Dinar Gumilang Jati Felix Adi Tanudjaja Fransisca Nobella, Maria Geraldo De Jesus M. R* Han Ay Lie Han Ay Lie Hasibuan, Samsul A Rahman Sidik Hsuan-Teh Hu Januarti Jaya Ekaputri Lena Tri Lestari M. R*, Geraldo De Jesus Muhammad Nur Khusyeni Nauval Rabbani Sri Tudjono Sukamta Sukamta Windu Partono Yoyong Arfiadi Zacharias, Hendry David

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