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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
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Search results for , issue "Vol. XXII, No. 1, Mei 2017" : 6 Documents clear
ANALISIS DAN DESAIN STRUKTUR BETON BERTINGKAT BANYAK BERDASARKAN PERBANDINGAN ANALISIS RESPONS SPEKTRUM DAN DINAMIK RIWAYAT WAKTU Galuh Ayu Pratiwi; Widodo Widodo
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Indonesia is a country that has vulnerability to an earthquake. During the earthquake, the building has vertical and horizontal motion. Horizontal earthquake forces attack the weak points on structure that not strong enough and caused collapse building. To reduce the losses and casualities caused by the collapse of building especially multistory building, many seismic analyzes of structures are developed. This research explained the comparison of structural response between response spectrum and dynamic time history analysis to an irregular 9-story building. The building located in Yogyakarta with medium soil type and used as a hotel. The earthquake record that used for dynamic time history is El Centro 1979 earthquake (high frequency), El Centro 1940 earthquake (medium frequency), and Duzce earthquake (low frequency). Furthermore, the maximum result of structural response between them will be used for design purposes. The analysis in this research was done by ETABS version 9.6. The result showed that the maximum value of structural response such as displacement, story drift, momen force, shear force, and axial force caused by El Centro 1940 earthquake load. The next value caused by response spectrum load, Duzce earthquake load, and the smallest value caused by El Centro 1979 earthquake. The design calculation was done by using the result from dynamic time history analysis that caused by El Centro 1940 earthquake load because the load has the maximum response value.
EVALUASI KINERJA POLA OPERASI WADUK (POW) WONOGIRI 2014 Dinia Anggraheni; Rachmad Jayadi; Istiarto Istiarto
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Wonogiri Reservoir is one of the reservoirs in Central Java which is a multifunctional reservoir. The reservoir serves many functions as flood control, irrigation and raw water supply, and hydropower (PLTA). For managing the fulfillment of these functions, Wonogiri Reservoir has a Reservoir Operating Rule to adjust the elevation and release discharge every mid-month. However, There was for the condition of Wonogiri Reservoir in October 2014. The water level of October 30, 2014, was at+126,66 m, while in Reservoir Operating Rule, the water level was supposed to be at +127,63 m. Therefore, the operating rule performance needs to evaluate, especially in 2014. The evaluation step began by conducting a water balance study with the demand for irrigation water and raw water, actual release, and inflow into the reservoir. The next step was optimizing the operating rule of the reservoir by the objective function of maximizing the comparison between release and demand for the fulfillment of irrigation water with 10 years data. The final step was evaluating the Wonogiri Reservoir Operating Rule in 2014 using a new operating rule generated from the optimization process. Based on the results of the study can be concluded that the inflow that occurred in 2014 can fulfill the needs of irrigation water and maintain elevation in accordance with the operating rule in 2014.
PENGARUH INTERAKSI KINEMATIK MASSA BANGUNAN TERHADAP RESPONS NON LINIER INELASTIK LAPISAN TANAH Muhammad Irfan Marasabessy; Widodo Widodo
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Seiring bertambahnya intensitas beban gempa, respons tanah sudah akan memasuki respons inelastik. Mengingat tanah mempunyai hubungan beban-deformasi yang sifatnya non-linier, maka pada beban yang besar respons struktur akan menjadi analisis non-linier inelastik. Salah satu metode yang menggambarkan hubungan regangan-tegangan pada media tanah adalah Hysteretic Ramberg Osgood (1943). Kondisi lapisan tanah akan sangat berbeda antara tanah bebas (free field) dan ketika terdapat bangunan diatasnya (Buidling Mass Effect). Massa bangunan akan berdampak pada bertambahnya kekakuan tanah sehingga secara teori respons dinamik yang dihasilkan akan berbeda. Perbedaan respons seperti ini perlu ditinjau lebih lanjut untuk memberikan informasi seberapa besar pengaruh bangunan terhadap respons dinamik tanah dibawahnya.Evaluasi respons inelastik tanah dipelajari dengan mengambil sudut pandang secara teori dari referensi dan investigasi dua profil tanah yang berbeda di Yogyakarta. Kedua profil tanah tersebut adalah Hotel Mataram City dan Rumah Sakit Akademik UII. Selain data tanah juga diketahui data struktur bangunan sebagai input beban massa bangunan yang akan membebani lapisan tanah dibawahnya. Analisis dilakukan dengan variasi kedalaman tanah endapan dan rekaman gempa (Bucharest, Elcentro, Duzce Turki Elnashai, Manjil, Duzce Turki, dan Loma Prieta) yang menggunakan metode integrasi numerik langsung β-Newmark dan diapliksikan ke Excel MATLAB R210a. Hasil analisis menunjukan bahwa pengaruh respons inelastik akan sangat signifikan pada simpangan, regangan geser dan tegangan geser. Respons simpangan dan regangan akan mengecil ketika tanah dibebani oleh massa bangunan, sebaliknya respons tegangan akan membesar. Respons kecepatan dan Percepatan menunjukan penurunan yang cukup signifikan pada profil tanah 1 untuk setiap gempa. Sedangkan untuk profil tanah 2 nilai responsnya akan mengecil pada frekuensi gempa yang semakin besar. Pengaruh spektrum respons di lapisan permukaan menunjukan periode getar PGA yang mengecil ketika tanah dibebani oleh massa bangunan yang artinya frekuensi gempa akan membesar dari kondisi ketika tanah bebas (free field).
PENGARUH CAMPURAN ABU SEKAM PADI TERHADAP KAPASITAS DUKUNG PONDASI DANGKAL PADA TANAH GAMBUT Muhammad Rifqi Abdurrozak
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

Abstract:Various methods of soil improvement have been widely developed, one of the improvement are with soil stabilization as an alternative problem-solving to the subsidence of soil and its bearing capacityy. One of the alternatives given to this model is rice husk ash (RHA) as a filler for stabilization of shallow foundations on peat soils. This paper presents changes in soil bearing capacity and the subsidence that occurs with RHA mixed variations. From the research results obtained that Central Kalimantan peat soil has high organic content of 80,15%. The result of triaxial test with Unconsilidated-Undrained (UU) condition on the original soil obtained cohesion value (c) of 0,645 kg/cm2 and the value of φ of 8,6 °, while the addition of RHA levels of 8%, during the period of 3 days with cohession value of 0,3089 kg/cm2 and the value of φ of 29,53 °. The addition of RHA can increase the bearing capacity of the soil to above 100% of the bearing capacity of the original soil. The qult result on the original soil is 750,612 kN/m2, whereas with the addition of RHA, the largest qult value is found at 11% of the seven days duration with the value of 2162,763 kN/m2 and the smallest qult value in the addition of 5% RHA and one day period with a value of 1.010,885 kN/m2.
STUDI PERBANDINGAN PENGGUNAAN PCU GIRDER DAN PCI GIRDER PADA STRUKTUR ATAS JEMBATAN JURANG GEMPAL, WONOGIRI Bastya Pratama Putra; Yunalia Muntafi; Suharyatmo Suharyatmo
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

The Bridge is one of the infrastructure buildings that support social, economic and industrial growth of a region. Jurang Gempal Bridge in Wonogiri is the main highway access that connects the Solo-Wonogiri Road. The main material of that bridge is steel which has corrosive prone nature so that need a routine maintenance. In contrast to steel, concrete material is easier to maintain and better to reduce shocks. Therefore, this research will be use concrete material that is PCU Girder and PCI Girder on the upper structure of the bridge.The research aims to compare the results of the design related to required total Girder area, number of tendons and reinforcement of the bridge designed with PCU Girder and PCI Girder from the Binamarga Office of Central Java. Research begins by surveying the location of the bridge, collecting the data, then designing and comparing the bridge upper structure design with both the PCU Girder and PCI Girder. The research shows that the design of PCU Girder bridge requires less girder than the PCI Girder, but the total area of the Girder is 36% greater than PCI Girder. Likewise, the need of tendons, moment, and shear reinforcement of PCU Girder bridge is more than the PCI Girder bridge.
PERBANDINGAN KINERJA CAMPURAN HOT ROLLED ASPHALT (HRA) DENGAN BAHAN IKAT ASPAL PEN 60/70 DAN ASPAL RETONA BLEND 55 DENGAN VARIASI DURASI RENDAMAN AIR LAUT Bayu Aditya Pratama; Miftahul Fauziah, S.T., M.T., Ph.D.
TEKNISIA Vol. XXII, No. 1, Mei 2017
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

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Abstract

One aspect that is important in highway design is to protect from water. The damage caused by water on the asphalt, such as hole, peel and cracking. If the influence of water in a highway construction is not controlled, it will decrease the value of durability, consequently it will shortening serviceability of highway. The purpose of this research is to determine the performance of Hot Rolled Asphalt mixture with Pen 60/70 and Retona Blend 55 as binder due to variations of the duration of sea water immersion, with observing to the characteristics of Marshall, Indirect Tensile Strength, Index of Retained Strength and their Permeability. Testing of material specifications in this study refers to the specifications. The sea water immersion time are 0 hours; 48 hours; 96 hours; and 192 hours. HRA with asphalt Retona as binder has a value smaller than asphalt Pen 60/70. HRA with Retona are more impermeable than asphalt Pen60/70. The stability HRS with Retona lost of has a percentage of 18, 09 %, is smaller than the loss with asphalt Pen 60/70 the 20, 12 % on the duration of the immersing time 192 hours. The IRS with asphalt Retona be obtained better results in each the length of immersion the sea water than the asphalt Pen60/70. However, the percentage of the decline in the duration of the end of the immersing of the sea water, which is 192 hours, a mixture of HRA with the connective Retona, with a value of 11, 35 % compared with asphalt Pen 60/70 to come down to just 8, 66 %. While the testing of ITS in the duration of immersing time 192 hours with asphalt Retona has a value of 10, 83 %, larger than asphalt Pen 60/70 to the decline in only 6,45 %.

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