Analisis Perilaku Nonlinier Tiang Listrik Prestressed Concrete HVFA Dengan Variasi Konfigurasi PC Wire Melalui Pemodelan Finite Element Method

Alfayet, Muhamad Rifki (2026) Analisis Perilaku Nonlinier Tiang Listrik Prestressed Concrete HVFA Dengan Variasi Konfigurasi PC Wire Melalui Pemodelan Finite Element Method. Other thesis, Insitut Teknologi Sepuluh Nopember.

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Abstract

Industri semen merupakan penyumbang utama emisi CO₂, sehingga substitusi fly ash dalam proporsi tinggi menjadi strategi yang penting. Meskipun demikian, penerapan beton High Volume Fly Ash atau HVFA pada elemen struktural di Indonesia masih relatif terbatas. Penelitian ini menganalisis perilaku nonlinier tiang listrik prestressed concrete HVFA melalui pemodelan three-dimensional finite element dengan perangkat lunak ATENA. Objek penelitian berupa tiang spun-cast tipe 12-200 daN sesuai SPLN D3.019-2:2021 dengan panjang 12.000 mm, penampang lingkaran berongga berkeruncingan 1/75, diameter luar 350 mm pada pangkal dan 190 mm pada ujung, tebal dinding 75 mm pada pangkal dan 45 mm pada ujung, kuat tekan beton 53,4 MPa, serta penulangan berupa delapan PC wire Ø7 mm mutu Bj TPD 130/145 simetris setiap 45°, kawat spiral Ø3,2 mm, dan sebelas ring wire Ø6 mm. Model divalidasi terhadap hasil uji jenis eksperimental yang dibebani lateral hingga runtuh, lalu diterapkan pada tiga variasi, yaitu tujuh PC wire pada model V27, enam pada model V36, dan penurunan mutu menjadi Bj TPD 95/110 pada model V4R. Model V1 merepresentasikan respons eksperimen dengan deviasi perpindahan 0,44 sampai 10,12%, rasio FEM terhadap eksperimen 1,010, RMSE 13,38 daN, NRMSE 4,93%, dan R² 0,977, serta konservatif terhadap beban patah eksperimen 824,7 daN dengan rasio kapasitas 0,85. Beban retak pertama menurun dari 254 daN pada V1 menjadi 234, 213, dan 212 daN, seluruhnya di atas beban kerja. Seluruh model runtuh lentur secara daktail, diawali retak lentur dekat tumpuan jepit sebelum beton zona tekan hancur. Kapasitas ultimit menurun dari 703 daN pada V1 menjadi 645, 583, dan 581 daN, atau turun 8,25%, 17,07%, dan 17,35%, dengan faktor keamanan patah 3,52; 3,23; 2,92; dan 2,91. Defleksi permanen seluruh model berkisar 1,3 sampai 2,1 mm, jauh di bawah batas 24 mm SPLN D3.019-2:2021, sehingga seluruh konfigurasi berpotensi memenuhi persyaratan keberterimaan secara numerik dan tetap memerlukan verifikasi prototipe.
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The cement industry is a major contributor to CO₂ emissions, making high-volume fly ash substitution an important strategy. However, the application of High Volume Fly Ash or HVFA concrete in Indonesian structural elements remains limited. This study analyzes the nonlinear behavior of HVFA prestressed concrete utility poles through three-dimensional finite element modeling in ATENA. The specimen was a type 12-200 daN spun-cast pole per SPLN D3.019-2:2021, 12,000 mm long, with a hollow circular section of 1/75 taper, outer diameters of 350 mm at the butt and 190 mm at the tip, wall thicknesses of 75 and 45 mm, a compressive strength of 53.4 MPa, and reinforcement of eight Ø7 mm Bj TPD 130/145 PC wires at 45° intervals, Ø3.2 mm spiral wire, and eleven Ø6 mm ring wires. The model was validated against experimental type tests loaded laterally to failure, then applied to three variations, namely seven PC wires in V27, six in V36, and a grade reduction to Bj TPD 95/110 in V4R. Model V1 reproduced the experimental response with displacement deviations of 0.44 to 10.12%, an FEM to experiment ratio of 1.010, RMSE 13.38 daN, NRMSE 4.93%, and R² 0.977, and remained conservative against the 824.7 daN breaking load, a capacity ratio of 0.85. The first cracking load decreased from 254 daN in V1 to 234, 213, and 212 daN, all above the working load. All models failed in a ductile flexural mode initiated by cracking near the fixed support. The ultimate capacity decreased from 703 daN in V1 to 645, 583, and 581 daN, or 8.25%, 17.07%, and 17.35%, with breaking safety factors of 3.52, 3.23, 2.92, and 2.91. Permanent deflection ranged from 1.3 to 2.1 mm, far below the 24 mm SPLN limit, so all configurations potentially satisfy the acceptance criteria numerically, pending prototype verification.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Prestressed concrete HVFA, ATENA, load displacement, crack pattern, kapasitas lentur,High-volume fly ash prestressed concrete, ATENA, load displacement response, cracking pattern, flexural capacity
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA683 Precast concrete construction. Prestressed concrete construction. T Technology > TD Environmental technology. Sanitary engineering > TD427.F58 Fly ash
Divisions:	Faculty of Vocational > 22301-Civil Infrastructure Engineering (D4)
Depositing User:	Muhamad Rifki Alfayet
Date Deposited:	03 Aug 2026 08:43
Last Modified:	03 Aug 2026 08:43
URI:	http://repository.its.ac.id/id/eprint/142537

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