CD Tesis

Karakteristik Mekanik Pada Jembatan Kupu-Kupu Menggunakan Metode Elemen Hingga

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Finite element method is an object modeling method to divide it into smaller parts because the whole still has the same properties as the whole before it is divided into smaller parts (discretization). The purpose of this research is to make a 3D modeling of the butterfly bridge which is then analyzed based on the angle of the bridge pile and the ratio of the height of the bridge profile to obtain the displacement deformation and natural frequency vibrations based on distribution in the middle of the span using the finite element method from the MARC Mentat software 2017.
In this study, the 3D butterfly bridge with a total span of 63.4 m was modeled in 3D using the Mentat MARC 2017 program. The analysis was carried out on model A with an angle of 63 degrees with the height ratio obtained from the comparison of the height of the middle profile pile divided by the long span. a bridge where the ratio of the elevation to an angle of 63 degrees is 0.16. FE analysis was also performed on models B (53 degrees) and C (73 degrees), with the angle and ratio values of 0.2 and 0.12, respectively. The concrete elements of the bridge structure are modeled using the solid element type while the steel elements are modeled using the shell element type. The entire 3D model is then analyzed using distributed loading in the middle span. From some variations of the 3D bridge model that has been analyzed, it can be seen the mechanical characteristics of each bridge model. This result is based on deflection values and natural frequency vibrations.
Based on the results of the analysis using the Mentat MARC 2017 Program, the deflection generated by model A (63 degree angle, 0.16 ratio) with distributed loading is 44.3 mm. The deflection does not exceed the permissible standards, that is, the length of 1/800 span 63.4 m, that is, 79 mm. From the results of the deflection produced by model B (angle 53 degrees, ratio 0.2) with distributed loading is 53.4 mm. From the results of the analysis model C (73 degrees angle and 0.12 ratio) is a very good and strong bridge model because it has a very small deflection level, namely 38.2 mm and 40.5 mm compared to an angle of 63 degrees with a profile height ratio of 0,16.
The mechanical characteristics of natural frequency vibrations produced by all models of less than 5 Hz, at an angle of 73 degrees have different bending modes in the 2nd Mode compared to 63 degrees and 53 degrees models.
Key words : Butterfly Bridge, Finite Element Method, Steel Bridge, Bridge

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 12. 220 (0044)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Teknik Sipil., 2020

Deskripsi Fisik

viii, 71 hlm.: ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 12. 220 (0044)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK SIPIL

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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