Perkuatan Sambungan Tipe Bolted Extended End-Plate (BEEP) Dengan Haunch

Hariadi, Dinda Almirah (2024) Perkuatan Sambungan Tipe Bolted Extended End-Plate (BEEP) Dengan Haunch. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sambungan merupakan elemen yang sangat penting dalam struktur bangunan baja, kegagalan pada bangunan ditentukan juga oleh kualitas sambungannya. Gempa bumi Northridge menyebabkan kerusakan pada bangunan baja termasuk pada sambungan, kerusakan yang terjadi berupa keretakan pada las,
sobekan pada sayap dan badan kolom. Penelitian tentang perbaikan sambungan terus dilakukan. Salah satu metode rehabilitasi tanpa perlu mengubah sambungan eksisting adalah dengan penambahan haunch. Hasil pengujian menyatakan bahwa
perkuatan sambungan menggunakan haunch dapat mengubah mode kegagalan sambungan dari kegagalan baut dan kegagalan end-plate menjadi pembentukan sendi plastis pada balok. Selain itu kapasitas lentur, kekakuan rotasi dan kapasitas
penyerapan energi sambungan meningkat secara signifikan. Sambungan momen tipe bolted extended end-plate adalah salah satu sambungan yang populer di Indonesia. Banyak gedung menggunakan sambungan tipe ini, salah satunya gedung
baja Universitas Tujuh Belas Agustus (UNTAG) Surabaya. Sambungan eksisting pada gedung dianalisis manual, hasil dari analisis menyatakan bahwa end-plate yang terpasang relatif tipis dan tidak sesuai dengan persyaratan SNI 7972-2020 sehingga perlu adanya perkuatan sambungan.
Metodologi penelitian terdiri dari dua tahap. Tahap awal yaitu analisis balik spesimen penelitian eksperimental dari Shi et al. (2006) yang digunakan untuk mengontrol keakuratan pada pemodelan, hasil analisis akan dibandingkan dengan
hasil penelitian eksperimental. Spesimen yang dianalisis dari penelitian eksperimental adalah spesimen JD-02. Tahap selanjutnya adalah menganalisis usulan perkuatan. Jumlah model yang diteliti sebanyak empat model sambungan.
Model sambungan BEEP-UR adalah sambungan eksisting yang diambil dari gedung baja Universitas Tujuh Belas Agustus (UNTAG) Surabaya, BEEP-RTH adalah perkuatan sambungan dengan menggunakan triangular haunch, sedangkan BEEP-RHH adalah perkuatan sambungan dengan horizontal haunch dan BEEP
RTRH adalah perkuatan sambungan dengan trapezoid haunch. Model sambungan akan dianalisis dan dibebani siklik sesuai dengan SNI 7860-2020.
Hasil analisis menunjukkan bawah model BEEP-UR menghasilkan
kapasitas momen sebesar 496,47 kN-m nilainya lebih rendah daripada 80% momen plastis balok saat terjadi rotasi 4%. Model perkuatan BEEP-RTH, BEEP-RHH dan BEEP-RTRH mampu meningkatkan kapasitas momen masing-masing sebesar
36,90%; 8,16% dan 35,80%. Model BEEP-RTH menghasilkan kapasitas momen paling besar diantara model perkuatan lainnya yaitu sebesar 679,66 kN-m saat rotasi 4%. Disipasi energi yang dihasilkan model BEEP-UR sebesar kN-m-rad.
Model perkuatan BEEP-RTH, BEEP-RHH dan BEEP-RTRH menghasilkan energi disipasi rata-rata 124,62 kN-m, disipasi energi paling besar dihasilkan oleh Model BEEP-RTH yaitu sebesar 135,98 kN-m. Dua model perkuatan yang diusulkan,
BEEP-RTH dan BEEP-RTRH, telah memenuhi persyaratan yang diberikan oleh SNI 7860-2020, yaitu mampu menahan 80% momen plastis balok saat terjadi rotasi 4%. Perkuatan dengan menambahkan trapezoid haunch, BEEP-RTRH, merupakan
opsi perkuatan yang paling optimum karena menghasilkan angka daktilitas tertinggi, memiliki perilaku dan penurunan kekakuan yang paling baik dibandingkan dengan model lain.
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The connection is very important element in the structure of steel buildings, the failure of the building is determined also by the quality of the connection. The
Northridge earthquake caused damage to steel buildings including connection, damage in the form of cracks in welds, tears in the wings and column bodies. Research on connection repair continues. One method of rehabilitation without
need to change the existing connection is the addition of haunch. The test results stated that strengthening the connection using haunch can change the mode of joint
failure from bolt failure and end-plate failure to the formation of plastic joints on the beam. In addition, the bending capacity, rotational stiffness and energy
absorption capacity of the connection is significantly increased. Bolted extended end-plate type moment connection is one of the most popular connection in Indonesia. Many buildings use this type of connection, one of which is the steel building of Universitas Tujuh Belas Agustus (UNTAG) Surabaya. The existing connection in the building was analyzed manually, the results of the analysis stated
that the end-plate installed was relatively thin and not in accordance with the requirements of SNI 7972-2020 so that it is necessary to strengthen the connection.
The research methodology consists of two stages. The initial stage is the reverse analysis of experimental research specimens from Shi et al. (2006) which is used to control accuracy in modeling, the results of the analysis will be compared with the results of experimental research. The specimen analyzed from experimental studies was specimen JD-02. The next stage is to analyze the retrofitting proposal. The number of models studied was three connection models.
The BEEP-UR connection model is an existing connection taken from the steel building of Universitas Tujuh Belas Agustus (UNTAG) Surabaya, BEEP-RTH is a strengthening of the connection using triangular haunch, while BEEP-RH is a strengthening of the connection with horizontal haunch. The connection model will be analyzed and cyclically loaded in accordance with SNI 7860-2020. The results of the analysis show that under the BEEP-UR model produces a moment
capacity of 496.47 kN-m, the value is lower than 80% of the plastic moment of the beam when a rotation of 4% occurs. The reinforcement models of BEEP-RTH, BEEP-RHH and BEEP-RTRH are able to increase the moment capacity by 36.90% each; 8.16% and 35.80%. The BEEP-RTH model produces the largest moment
capacity among other reinforcement models at 679.66 kN-m at 4% rotation. The energy dissipation produced by the BEEP-UR model is kN-m-rad. The reinforcement models of BEEP-RTH, BEEP-RHH and BEEP-RTRH produced an average dissipation energy of 124,62 kN-m-rad, the largest energy dissipation
produced by the BEEP-RTH Model was 135,98 kN-m-rad. The two proposed reinforcement models, BEEP-RTH and BEEP-RTRH, have met the requirements given by SNI 7860-2020, which are able to withstand 80% of the plastic moment of the beam when a 4% rotation occurs. Retrofitting using trapezoid haunch, BEEP
RTRH, is the most optimal retrofitting option because it produces the highest ductility figures, has the best behavior and degredation in stiffness compared to other models.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Bolted Extended End-Plate, Sambungan Terprakualifikasi, Perkuatan Sambungan, Haunch, ANSYS Bolted Extended End-Plate, Prequalified Connection, Strengthening of Connection, Haunch, ANSYS
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA656.2 Buckling T Technology > TA Engineering (General). Civil engineering (General) > TA660.C6 Columns
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Dinda Almirah Hariadi
Date Deposited:	30 Jul 2024 08:37
Last Modified:	30 Jul 2024 08:37
URI:	http://repository.its.ac.id/id/eprint/110062

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