Investigation Of Failure Mechanism Analysis Of Cold Formed Steel Truss Bridge Due To Static Load

Ammar, Mohamad Ibrahim Zaed (2020) Investigation Of Failure Mechanism Analysis Of Cold Formed Steel Truss Bridge Due To Static Load. Doctoral thesis, Institut Teknologi Sepuluh Nopember Surabaya.

Text 03111360017001-Dissertation.pdf - Accepted Version Restricted to Repository staff only Download (3MB) | Request a copy

Abstract

Jembatan sebagai salah satu infrastruktur penghubung yang cukup penting
di banyak negara membuat kegiatan pemeliharaan dan pemeriksaan jembatan
menjadi sangat penting. Kegagalan suatu jembatan rangka baja sering terjadi,
terbukti menjadi masalah yang sangat besar dalam hal pengaruhnya terhadap
perekonomian, menghilangkan banyak nyawa, dan mengakibatkan kerugian yang
sangat besar. Tujuan dari penelitian ini adalah untuk mengetahui mekanisme
keruntuhan jembatan rangka baja ringan untuk mengetahui faktor-faktor penting
yang menyebabkan kemungkinan kegagalan jembatan dan untuk mengetahui
perilaku struktur jembatan dan kerusakan akibat pengujian.
Jenis jembatan penelitian ini adalah jembatan rangka ringan tipe Warren
karena sering digunakan dalam konstruksi jembatan. Dibuat dua spesimen
jembatan rangka yaitu B1 dan B2 dengan panjang bentang total 4,8 m, lebar 0,85
m, dan tinggi 0,75 m. Spesimen B1 dibuat dengan sambungan hanya
menggunakan sekrup dan spesimen B2 dibuat dengan sambungan menggunakan
kombinasi sekrup dan lem adesif. Metode penelitian akan menggunakan program
perangkat lunak SAP2000 untuk pemodelan. Uji eksperimental dengan
menempatkan sistem sensor (LVDT dan pengukur regangan) yang dipasang di
jembatan untuk memantau perpindahan relatif yang terjadi di bawah beban yang
berbeda. Studi ini berkonsentrasi pada mekanisme kegagalan jembatan rangka
baja ringan dengan beban statis untuk menunjukkan inovasi dari struktur tersebut.
Dari hasil solusi analitik dan program pengujian didapatkan beban
maksimum spesimen B1 sebesar 3420 kg dan spesimen B2 sebesar 5700 kg.
Kerusakan pertama spesimen B1 karena kegagalan sambungan, pelat simpul
mengalami tekuk lokal dan beberapa sekrup putus dan spesimen B2 mengalami
kegagalan pertama karena kegagalan batang, bagian kompresi mengalami tekuk
lokal dan semua sambungan masih dalam kondisi baik. Dapat disimpulkan bahwa
spesimen B2 memiliki kinerja yang lebih baik daripada spesimen B1 karena
adanya kontribusi kombinasi ulir dan perekat dan penambahan tebal pelat simpul
pada sambungan dapat membuat struktur menjadi lebih kuat dan kaku, karena
sambungan menjadi lebih kuat dari batang
====================================================================================================
Bridge as one of the connecting infrastructures is quite important in many
countries makes maintenance and inspection of the bridge become very important.
Failure of a steel truss bridge often occurs, it proves to be a huge problem in terms
of its impact on the economy, eliminate many lives, and result in enormous losses.
The purpose of this study is to investigate of failure mechanism of the cold formed
steel truss bridge to understand the significant factors that increase the possibility
of the bridge failure and to examine the staic behavior of the bridge and damage
from resulting of the test.
The bridge type of this study is Cold Formed Steel (CFS) truss bridge type
Warren because it is often used in bridge construction. Two truss bridge
specimens called B1 and B2 were made with total length span of 4.8 m, width of
0.85 m, and height of 0.75 m. Specimen B1 was made with connection using
screw only and specimen B2 was made with connection using combination of
screw and adhesive. The method of the study will use a software program
SAP2000 for modeling the design. The experimental test will put sensor systems
type (Linear Variable Differential Transducers LVDTs and strain gauges SGs)
installed on the bridge to monitor the relative displacements that could occur
under different loadings. This study concentrates on failure mechanism of steel
truss bridges under satic load to indicate innovation from the structure.
From the results of analytical solution and experimental program, they
showed that the maximum load of specimen B1 is 3420 kg and specimen B2 is
5700 kg. The first failure of specimen B1 due to connection failure, the gusset
plate experienced local buckling and some screws were broken and the first failure
of specimen B2 due to member failure, the compression member experienced
local buckling and all connections were still in good condition. It can be
concluded that specimen B2 is better performance than specimen B1 due to the
contribution of combination of screw and adhesive and adding thickness of gusset
plate on connection, it can make the structure becomes stronger and stiffer,
because the connections become stronger than members

Item Type:	Thesis (Doctoral)
Uncontrolled Keywords:	baja ringan, mekanisme kegagalan, jembatan rangka, sambungan, beban statik
Subjects:	T Technology > TE Highway engineering. Roads and pavements > TE7 TG300 Bridges--Design and construction.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22001-(S3) PhD Thesis
Depositing User:	Mohamad Ibrahim Zaed Anwar
Date Deposited:	07 Nov 2020 13:10
Last Modified:	19 Oct 2021 06:46
URI:	http://repository.its.ac.id/id/eprint/82232

Actions (login required)

View Item