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Tension Stiffening Behavior of Polypropylene Fiber- Reinforced Concrete Tension Members Aris Aryanto; Berto Juergen Winata
Journal of Engineering and Technological Sciences Vol. 53 No. 2 (2021)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2021.53.2.9

This paper focuses on comparing the behavior of RC tension members with and without the addition of polypropylene fibers at various corrosion levels. Eight cylindrical tensile specimens were tested to evaluate their tension-stiffening and cracking behavior. The content of polypropylene fiber added into the concrete mix was the main variable (0.25%, 0.50%, 0.75%, and 1.0% of total volume). The corrosion level was varied from slight (5%), medium (10%) to severe (30%) and, like the other variables, applied only to 1.0% polypropylene fiber-reinforced concrete (PFRC) specimens. The test results showed that the fiber addition significantly increased the tension-stiffening effect but was largely unable to reduce the effect of bond degradation caused by corrosion. Moreover, the addition of polypropylene fibers was able to improve the cracking behavior in terms of crack propagation, as shown by smaller crack spacing compared to the specimen without fiber addition at the same corrosion level.

Behavior of Reinforced Concrete Frames In-Filled with Lightweight Materials Under Seismic Loads Iswandi Imran; Aris Aryanto
Civil Engineering Dimension Vol. 11 No. 2 (2009): SEPTEMBER 2009
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents an experimental and analytical research conducted to study the in-plane behavior of reinforced concrete (R/C) frames in-filled with lightweight materials. The tests were performed on two single bay, single story in-filled frame specimens with ½ scale models. One of the test specimens was in-filled with lightweight materials, i.e. autoclaved aerated concrete (AAC) blocks, and the other, used as the comparison, was in-filled with clay brick materials. The loading used in the tests was in the form of cyclic in-plane lateral loads, simulating earthquake forces. Behavior of the frame structures was evaluated through the observed strength and deformation characteristics, the measured hysteretic energy dissipation capacity and the measured ductility. The experimental results show that the R/C frame in-filled with AAC blocks exhibited better performance under in-plane lateral loads than that in-filled with conventional clay bricks. In the analytical work, the performance of some analytical models available in the literature was evaluated in simulating the experimental results

EVALUASI KINERJA PILAR JEMBATAN LEMAH IRENG II BERDASARKAN PERFORMANCE BASED SEISMIC DESIGN Farah Amrina; Muhammad Riyansyah; Aris Aryanto; Erwin Lim
TEKNISIA Vol 28 No 1 (2023): Teknisia
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol28.iss1.art1

Lemah Ireng II Bridge is a type of box girder balance cantilever bridge located in Semarang Regency, Central Java, which was completed in 2014. The renewal of bridge loading regulations in 2016 consisted of SNI 1725:2016 for standard load and SNI 2833:2016 for earthquake load. Changes in earthquake loading regulations resulted in an increase in the ground surface spectra value in the short period (Sds, T=0,2 second) in the longitudinal direction by 38.47% and in the transverse direction by 45.39% as a result of updating the earthquake map and the earthquake response modification factor. To determine the level of bridge performance against the applicable earthquake regulations based on the pier structure parameters, the Non-Linear Time History Analysis (NLTHA) method is used. The NLTHA method uses seven deaggregated ground motion records which aim to represent the ground motions that occur at the bridge site. Parameter limits at the pier to determined performance level of bridge based on NCHRP Synthesis 440 and NCHRP Research Report 949. According to the results of performance-based analysis, the bridge pier structure meets the Fully Operational performance level based on the parameters of drift, compressive strain of concrete and tensile strain of steel reinforcement. At this level of performance, after an earthquake the structure suffers very little damage so no repairs are needed and the bridge can function immediately after the earthquake.

PIER PERFORMANCE LEVEL OF JAKARTA-BANDUNG HIGH SPEED RAILWAY WITH ISOLATOR UNDER EARTHQUAKE LOADS USING TIME HISTORY ANALYSIS Amirah Zakiyyah; Aris Aryanto; Bayu Wintoro
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p06

This study analyzes the performance level of a typical pier structure on the Jakarta-Bandung High-Speed Railway (HSR) bridge located in the Bandung area, focusing on the effects of seismic loads. The structure utilizes double spherical bearings (isolators), and its performance is compared with a similar structure without isolators to evaluate the isolators’ effectiveness under design-level earthquakes. A Non-linear Time History Analysis (NLTHA) was conducted using 11 pairs of ground motion records. These motions were scaled to match the target response spectrum for Bandung using amplitude scaling in the DeepSoil program. Structural analysis was carried out using Midas Civil to determine the seismic performance levels of the piers Additionally, pier displacements were examined to further assess isolator performance. The results show that the structure equipped with isolators maintained a Fully Operational (FO) performance level, indicating minimal damage and full functionality after the earthquake. In contrast, the structure without isolators surpassed the elastic range but remained within the Immediate Occupancy (IO) performance level, suggesting minor damage but continued usability. These findings confirm that the use of isolators significantly enhances the seismic resilience of bridge piers in high-speed railway.

PIER PERFORMANCE LEVEL OF JAKARTA-BANDUNG HIGH SPEED RAILWAY WITH ISOLATOR UNDER EARTHQUAKE LOADS USING TIME HISTORY ANALYSIS Amirah Zakiyyah; Aris Aryanto; Bayu Wintoro
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 2 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 2, September 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i02.p06

This study analyzes the performance level of a typical pier structure on the Jakarta-Bandung High-Speed Railway (HSR) bridge located in the Bandung area, focusing on the effects of seismic loads. The structure utilizes double spherical bearings (isolators), and its performance is compared with a similar structure without isolators to evaluate the isolators’ effectiveness under design-level earthquakes. A Non-linear Time History Analysis (NLTHA) was conducted using 11 pairs of ground motion records. These motions were scaled to match the target response spectrum for Bandung using amplitude scaling in the DeepSoil program. Structural analysis was carried out using Midas Civil to determine the seismic performance levels of the piers Additionally, pier displacements were examined to further assess isolator performance. The results show that the structure equipped with isolators maintained a Fully Operational (FO) performance level, indicating minimal damage and full functionality after the earthquake. In contrast, the structure without isolators surpassed the elastic range but remained within the Immediate Occupancy (IO) performance level, suggesting minor damage but continued usability. These findings confirm that the use of isolators significantly enhances the seismic resilience of bridge piers in high-speed railway.

Studi Eksperimental Kapasitas Momen Balok Beton Mutu Tinggi dengan Penambahan Serat Polypropylene Messa Revolis; Aris Aryanto
Journal of Infrastructure and Civil Engineering Vol. 6 No. 1 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i1.157

Beton mutu tinggi banyak digunakan dalam konstruksi modern karena memiliki kekuatan tekan yang tinggi. Namun, material ini memiliki kelemahan berupa sifat getas yang menyebabkan kemampuan menahan beban lentur dan mengontrol retak menjadi terbatas. Berbagai penelitian telah menunjukkan bahwa penambahan serat dapat meningkatkan daktilitas dan ketahanan retak beton. Meskipun demikian, kajian mengenai pengaruh serat polipropilena terhadap kapasitas momen balok beton mutu tinggi, khususnya pada kombinasi dengan tulangan lentur konvensional, masih terbatas. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi pengaruh penambahan serat polipropilena terhadap kapasitas momen dan perilaku retak balok beton mutu tinggi. Penelitian dilakukan secara eksperimental dengan membuat empat tipe spesimen balok beton mutu tinggi, yaitu: (1) balok tanpa serat polipropilena sebagai spesimen kontrol, (2) balok dengan penambahan serat polipropilena sebesar 0,5%, (3) balok dengan tulangan lentur D13, dan (4) balok dengan tulangan lentur D13 serta serat polipropilena sebesar 0,5%. Seluruh spesimen diuji menggunakan metode pembebanan lentur hingga mencapai kondisi kegagalan. Parameter yang diamati meliputi beban maksimum, deformasi balok dan kapasitas momen. Hasil pengujian menunjukkan bahwa penambahan serat polipropilena mampu meningkatkan kapasitas momen balok dibandingkan dengan balok tanpa serat. Kombinasi antara tulangan lentur D13 dan serat polipropilena juga menunjukkan kinerja struktural yang lebih baik dibandingkan spesimen lainnya. Penambahan serat polipropilena terbukti mampu meningkatkan kapasitas momen serta meningkatkan daktilitas balok beton mutu tinggi. Temuan ini menunjukkan bahwa penggunaan serat polipropilena berpotensi menjadi solusi efektif untuk meningkatkan kinerja lentur beton mutu tinggi pada elemen struktur balok.

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