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INDONESIA
Teknisia
Published by Universitas Islam Indonesia
ISSN : 08538557     EISSN : 27460185     DOI : 10.20885/teknisia
Core Subject : Engineering,
Engineering
Jurnal Teknisia terbit pertama kali pada bulan April 1996. Pada awal berdirinya, Jurnal Teknisia merupakan jurnal ilmiah berkala yang diterbitkan tiga kali setahun oleh Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Daerah Istimewa Yogyakarta yang berisi artikel-artikel bidang teknik sipil, teknik lingkungan, dan arsitektur.
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Articles 6 Documents
 1 
Search results for , issue "Vol. XXVI, No. 2, November 2021" : 6 Documents clear
PENGEMBANGAN PERANGKAT LUNAK PERANCANGAN LAPIS ULANG PERKERASAN LENTUR BERDASARKAN MANUAL BINA MARGA 2017 Kushari, Berlian; Hidaya, Nur Robbi
Teknisia Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art5

Abstract

The Benkelman Beam method is used to design overlay thickness on a flexible pavement based on its maximum rebound deflection representing its structural capacity. This method has been adopted in the 2017 Bina Marga Design Manual applicable for Indonesian road design since June 2017. This research was aimed to develop a tool that can facilitate rebound deflection data analysis and overlay thickness design based on the overlay design curves adopted in the Bina Marga guide. Visual Basic 6.0 was used as the environment for the development. In addition to the standard curves, the tool added four intermediate curves corresponding to the design load of 7.5x106, 3.5x106, 1.5x106, and 0.75x106 ESALs to enable more economical designs. Furthermore, a manual overlay procedure was conducted using overlay data from Sampaan – Singosaren, Kowangan – Maron, and Imogiri Barat road sections to validate the usability of the developed tool. The validation showed an acceptable difference of less than 2% between results obtained from the software and the manual calculations.
RASIO KEKAKUAN LENTUR (FLEXURAL STIFFNESS RATIO) ELEMEN BETON AKIBAT GEMPA BERDASARKAN ANALISIS DINAMIK STRUKTUR SINGLE DEGREE OF FREEDOM (SDOF) Widodo Pawirodikromo; Anggit Mas Arifudin; Dewi Ayu Harjani
TEKNISIA Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art6

Abstract

Modeling the effective stiffness of reinforced concrete elements for structural analysis is an important problem and needs to be solved. The effective stiffness is then expressed in terms of the average flexural stiffness ratio Ck. whose value has been determined by Codes. Previous studies have shown that the stiffness ratio is assumed/stated to be strength-dependent. Based on this statement, research on the flexural stiffness ratio Ck of reinforced concrete elements through dynamic analysis of the SDOF structure was carried out. The SDOF structural model used has a vibration period T = 0.48 sec. The dynamic load used is 50 earthquake records consisting of 3-groups of frequency content (low, moderate, high). The dynamic analysis that was carried out has accommodated the inelastic responses whose behavior follows Modified Takeda hysteretic loops. The study results showed that the maximum response of the structure generally occurred in the strong middle part of the earthquake recording or the period of the effective duration of D595. The main finding in this study is that the strength dependent of flexural stiffness is proven. The relationship between the average flexural stiffness ratio Ck and peak ground acceleration of PGA can be mathematically expressed in the equation Ck = -0.981.PGA + 0.822. The relationship is negative, meaning that the higher the PGA value, the smaller the Ck value with a correlation coefficient of R = 0.635 (moderate correlation). The Ck value negatively correlates with the drift ratio and damage index, DI.
STUDI PENAMBAHAN STRUKTUR BETON BERTULANG MENJADI KOMPOSIT DENGAN BAJA BERGELOMBANG PADA OVERPASS PUCUNG LOR KROYA Raden Aufa Dhia Anggara; Ashar Saputra
TEKNISIA Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art1

Abstract

The construction of a nonlevel railway crossing in Pucung Lor Kroya was aimed to improve safety and smooth traffic between railways and roads. Increasing frequency of railways through the Double Track Railway Project of South Java demands a fast pace construction of railway crossing without disrupting any railway traffic. So, the overpass structure will be built using Corrugated Mortar Busa Pusjatan (CMP) technology with Corrugated Steel Plate (CSP) on a curve structure 1 (P1) with a 25-meter span and curve structure 2 (P2) with a 12-meters span. When construction began, planners added reinforced concrete layers until composite with CSP to increase structural capacity and became structural protectors if CSP yielded or corrosions. Overpass modeling was done using MIDAS Civil 2019 based on finite element 3D to check strength capacity and service limits. The addition of reinforced concrete structures to composites with CSP is also compared to the non-composite design of CMP Pusjatan to see the effect on internal forces, stress, and deflection of CSP although the stress on foam mortar. Based on the results, the composite design overpass analysis satisfies compression-bending and shearing capacity checks based on Ultimate Limit States (ULS-PBKT) and service limit based on Serviceability Limit State (SLS-PBL). The addition of reinforced concrete to composite with CSP increases safety factor value because CSP stresses are lower than non-composite designs. The potential collapses from foam mortar can also be reduced as the structure becomes rigid.
ANALISIS PERBANDINGAN PRODUKTIVITAS PEKERJAAN FONDASI DANGKAL DENGAN MATERIAL BLOK BETON DAN PRODUKTIVITAS PEKERJAAN SESUAI SNI 2836:2008 Hari Nuryanto; Setya Winarno
TEKNISIA Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art2

Abstract

The use of concrete block material instead of rubble stone on shallow foundation work has many advantages. One aspect that needs to be studied is its workforce productivity. This paper aims to elaborate workforce productivity on shallow foundation work with concrete block material and compare its result to Standard of SNI 2836:2008. Data are collected from construction project which has site-wide construction in Krandon and site-narrow construction in Keringan. The method of data collection has been done by direct investigation from the beginning to the end of the foundation project and complemented by photo and video. These findings have shown that workforce productivity on shallow foundation work with concrete block material both in wide-site and narrow site construction is higher than that of SNI Standards, i.e. 48,87% and 7,14% higher, respectively. Moreover, the productivity rate tends to increase due to the learning effect and adaptation on this foundation work done repetitively. There is a learning curve: y=0,1271.ln(x)+0,4818, in which y=productivity rate and x=work session.
EVALUASI FASILITAS BAGI PENYANDANG DISABILITAS DI STASIUN YOGYAKARTA Aisyah Nur Jannah; Prayogo Afang Prayitno; Prima Juanita Romadhona
TEKNISIA Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art3

Abstract

Yogyakarta Station is a railway station located in Yogyakarta City. As a transportation mode transfer point, the station must be inclusive for all train passengers, including passengers with disabilities. An inclusive railway station will be accomplished by providing station facilities that accommodate accessibility for passengers with disabilities. This study aims to evaluate the facilities for passengers with disabilities at Yogyakarta Station. By understanding the evaluation, railway operators and governments will create specific improvements that would make the station more inclusive. The facilities are following the Minister of Transportation Regulation Number PM 98 of 2017 concerning Providing Accessibility to Public Transportation Services for Service Users with Special Needs. This study uses the IPA (Importance Performance Analysis) method obtained through observation and questionnaires. The result shows that based on 15 (fifteen) facilities evaluated, all facilities are available in Yogyakarta Station except the guide block to the counters and toilets, information in Braille letters, ticketing counters/special ticketing counters, and information/customer service rooms which accessible easily. In addition, based on the IPA method, improving facilities for passengers with disabilities at Yogyakarta Station should be prioritized for ready-to-use wheelchair facilities, access to and from passengers in multi-story buildings, and toilet access.
THE USE OF AN INERTER FOR BASE-ISOLATION SYSTEM IN A SINGLE-DEGREE-OF-FREEDOM STRUCTURE Predaricka Deastra
TEKNISIA Vol. XXVI, No. 2, November 2021
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.vol26.iss2.art4

Abstract

This paper presents seismic performance of a single-degree-of-freedom (SDOF) structure equipped with a base isolation system (BIS). Common BIS employs rubber material to provide lateral flexibility in order to minimize the transmitted energy induced by the ground motion to the structure. The concept is to lower the structural natural frequency such that it falls far below the pre-dominant frequency of most earthquakes. A similar effect can also be achieved by using a device called inerter, a two-terminal device generated forces proportional to the relative acceleration between its two terminals. Instead of reducing stiffness, inerter amplifies the theoretical mass of the structure without significantly increase its physical mass. It is because, depending on the inertance-generation mechanism, an inerter is capable of generating inertance – a constant ratio of forces and relative accelerations of the inerter – several times higher than its physical mass. In this paper, the effectiveness of inerter for use as a BIS is compared to the common BIS concept. The results show that, for a similar natural frequency level, a BIS with inerter has narrower response around the resonance in the frequency domain. Furthermore, in the time domain analysis, the structure with an inerter has a lower response compared to the structure with a traditional BIS when subjected to a long-period earthquake ground motion

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