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<![CDATA[KOMPARASI NILAI FAKTOR AMPLIFIKASI TANAH DENGAN PENDEKATAN SSA DAN HVSR PADA WILAYAH KECAMATAN TEMBALANG KOTA SEMARANG ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Irsyam, Masyhur]]>;
<![CDATA[R.W, Sri Prabandiyani]]>;
<![CDATA[Maarif, Syamsul]]>
<![CDATA[ TEKNIK Volume 34, Nomor 3, Tahun 2013 ]]>
Publisher : <![CDATA[Diponegoro University ]]>
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DOI: 10.14710/teknik.v34i3.6983
<![CDATA[Several methods for evaluating the effect of site specific condition of soil layers against earthquakes are presently available. Site Specific Analysis (SSA) and Horizontal-to-Vertical Spectral Ratio (HVSR) are two methods commonly used for estimating the amplification factor of soil layers above bedrock. SSA can be performed using subsurface shear wave velocities and dynamic soil properties (density, shear modulus and damping). The HVSR is a simple method for estimating the site amplification factor. Based on the time and budget requirement HVSR is more efficient and effective compare to SSA method.This paper presents result of SSA and HVSR methodscomparison for estimating the amplification factor of soil layers. Two boring locations and six single station seismometer tests were perform within Tembalang District Area.]]>
<![CDATA[PERSEPSI PENGEMBANGAN PETA RAWAN GEMPA KOTA SEMARANG MELALUI PENELITIAN HAZARD GEMPA DETERMINISTIK ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Irsyam, Masyhur]]>;
<![CDATA[Retno Wardani, Sri Prabandiyani]]>;
<![CDATA[Maarif, Syamsul]]>
<![CDATA[ TEKNIK Vol 36, No 1 (2015): (Juli 2015) ]]>
Publisher : <![CDATA[Diponegoro University ]]>
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DOI: 10.14710/teknik.v36i1.7701
<![CDATA[Pengembangan peta resiko gempa berdasarkan analisa hazard gempa deterministik (DSHA) merupakan salah satu tahapan yang sangat penting untuk mitigasi kegempaan Kota Semarang. Penelitian peta resiko gempa mencakup perhitungan hazard gempa, analisa kondisi tanah lokal (SSA) dan analisa tingkat resiko kegempaan. Analisa hazard gempa diimplementasikan dengan pendekatan deterministic akibat gempa untuk sumber gempa sesar aktif disekitar Kota Semarang. Parameter geoteknik diperoleh dari hasil pengamatan atau pengujian geoteknik. Hasil dari penelitian ini mencakup pengembangan peta spektra percepatan gerakan tanah di permukaan dan faktor amplifikasi percepatan tanah yang sangat diperlukan pada pengembangan peta rawan gempa Kota Semarang.[Perception Development of Seismic Risk Map Semarang City Through Deterministic Hazard Analysis Research] Development of seismic risk map based on Deterministic Hazard Analysis (DSHA) is an important step for seismic disaster mitigation for Semarang City. The study includes estimation of seismic hazard (DSHA), site specific response analysis (SSA) and risk assessment. Seismic hazard is performed based on deterministic approach considering shallow crustal fault sources influencing Semarang City. Geotechnical parameters are interpreted from previous geotechnical measurements. The result of the hazard analysis includes the distribution of site response spectral acceleration and amplification ratios are performed corresponding to seismic risk assessment for Semarang City. ]]>
<![CDATA[Perbaikan Tanah Lempung Ekspansif Menggunakan Soda Api (NaOH) ]]>
<![CDATA[Pardoyo, Bambang]]>;
<![CDATA[Wardani, Sri Prabandiyani Retno]]>;
<![CDATA[Partono, Windu]]>
<![CDATA[ TEKNIK Vol 39, No 1 (2018): (July 2018) ]]>
Publisher : <![CDATA[Diponegoro University ]]>
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DOI: 10.14710/teknik.v39i1.14945
<![CDATA[An expansive clay is soil material that is composed of various minerals include kaolinite, montmorillonite and illite group. Mineral montmorilinite have the sensitivity to the effects of the water is very easy to swell and shrink. High and low levels of swelling and shrinkage (shrinkage) expansive clay is determined by the high and low content of montmorillonite on expansive clay granules. Because of these properties are very high content of montmorillonite often cause problems in the building. This study uses a solution of Soda Api (NaOH) as a stabilizer through the compaction process Modified Proctor on (OMC + 7,5%)  Proctor standard by the number of collisions each - each is 10 x, 25x and 56x, and the amount of additional water on weight soil  dry , with variations in increments of  water by 95% : 5% NaOH, water by 90%: 10% NaOH and water by 85% : 15% NaOH. This research was conducted testing - testing in the laboratory include: Index properties, Swelling Pressure, Swelling Potential and CBR with curing and no curing. Results - results in these tests show that the value of the property index showed an increase, Test UCS showed an decrease, Test CBR by soaking at the age of 7 days with a mixture of caustic soda 10% showed the best results, while the pressure test expands and Test Potential expands decreased significant.]]>
<![CDATA[Optimasi Distribusi Lubang Pada Balok Baja Kastela ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Sukamta, Sukamta]]>;
<![CDATA[Hardiyati, Siti]]>;
<![CDATA[Budi, Listiyono]]>
<![CDATA[ TEKNIK Vol 39, No 1 (2018): (July 2018) ]]>
Publisher : <![CDATA[Diponegoro University ]]>
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DOI: 10.14710/teknik.v39i1.12234
<![CDATA[Balok baja kastela adalah profil baja yang dikembangkan dari profil I yang dipotong bagian badan dan disambung lagi sedemikian rupa sehingga membentuk lubang pada bagian badan. Bentuk lubang profil balok baja kastela pada umumnya adalah persegi enam (heksagonal). Pembuatan balok baja kastela perlu memperhatikan jarak antar lubang agar balok mempunyai kemampuan menahan beban tertinggi. Tulisan ini menyajikan hasil penelitian untuk menentukan jarak antar lubang yang optimum pada balok baja kastela dengan mempertimbangkan distribusi tegangan, deformasi, dan kelelehan pada balok tersebut. Penelitian diawali dengan perhitungan menggunakan metode Elemen Elemen Hingga (Finite Element Method /FEM) kemudian dilanjut dengan pengujian di laboratorium. FEM dilakukan untuk menentukan ukuran dan jarak antar lubang optimum pada balok kastela. Variasi sudut bukaan lubang dilakukan antara 45o sampai 70o. Hasil analisis FEM kemudian diujikan di laboratorium dengan ukuran dan jarak antar lubang optimum untuk mengevaluasi perbedaan hasilnya. Hasil penelitian menunjukkan lubang profil dengan kemiringan antara 45o sampai 70o sebaiknya dibuat dengan jarak antar lubang antara 0.1 sampai 0.25 dari tinggi profil balok kastela dengan distribusi lubang terbaik adalah antara 5 sampai 7 lubang per meter.]]>
<![CDATA[EVALUASI KELAYAKAN PENDANAAN PROYEK DENGAN TEKNIK PEMROGRAMAN LINIER ]]>
<![CDATA[Partono, Windu]]>
<![CDATA[ TEKNIK Volume 28, Nomor 1, Tahun 2007 ]]>
Publisher : <![CDATA[Diponegoro University ]]>
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DOI: 10.14710/teknik.v28i1.2078
<![CDATA[One main problem characterizes linear programming is to seek the maximum or minimum of a linearexpression when the variables of the problem are subject to restrictions in the form of certain linearequalities or inequalities. Problems of this kind are encountered when we have to exploit limitedresources in an optimal way. Project Cost Evaluation which play an important role in project are ofspecial significance in this respect. The real problem of Project Cost Evaluation analysis are tomanipulate cash flow problems of project into linear programming model or mathematical model.This method should be selected technically according the actual condition of the project. In designingand selecting the mathematical models, it is necessary to take into consideration the relationshipbetween the limited resources (money) and the optimal solution.]]>
<![CDATA[Kajian Pemilihan Koefisien Situs pada Perhitungan Spektra Percepatan Gerakan Tanah di Permukaan ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Irsyam, Masyhur]]>;
<![CDATA[Sengara, I Wayan]]>;
<![CDATA[Asrurifak, Muhammad]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1, JULI 2019 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v25i1.22962
<![CDATA[SNI 1726:2012 states that surface spectral accelerations SMS (0.2 second) and SM1 (1 second) can be calculated by multiplying site factors Fa (0.2 second) and Fv (1 second) with spectral accelerations SS (0.2 second) dan S1 (1 second). All site factors used by SNI 1726:2012 are adopted from ASCE/SEI 7-10. In 2013 Stewart and Seyhan proposed new and different site factors compared to ASCE/SEI 7-10. These site factors are then used for developing ASCE/SEI 7-16 with minor improvement for site class SE (soft soil). ASCE/SEI 7-16 states that the site factors for site class SE with SS greater than 1g or S1 greater than 0.2g, shall be calculated using Site Specific Analysis (SSA). The SSA method used for calculating site factor is difficult for ASCE/SEI 7-16 to be implemented in Indonesia. This paper describes the result of SMS and SM1 study at five cities (Jakarta, Bandung, Semarang, Yogyakarta and Surabaya) for site class SC, SD and SE using site factors proposed by Stewart and Seyhan and site factor SNI 1726:2012. The SMS and SM1 at five cities calculated using site factors proposed by Stewart and Seyhan are ±15% differences compared to SMS and SM1 calculated usingSNI 1726:2012 site factors.]]>
<![CDATA[Aplikasi Metode HVSR pada Perhitungan Faktor Amplifikasi Tanah di Kota Semarang ]]>
<![CDATA[Partono, Windu]]>;
<![CDATA[Irsyam, Masyhur]]>;
<![CDATA[Prabandiyani R.W., Sri]]>;
<![CDATA[Maarif, Syamsul]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 2, DESEMBER 2013 ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v19i2.8421
<![CDATA[The Horizontal-to-Vertical Spectral Ratio (HVSR) is a simple method for estimating the resonance frequency of sedimentary layers. This method can also be used for estimating the site amplification factor. By using the resonance frequency and the amplification factor HVSR method can also be used for predicting the depth of the bed rock or the thickness of sediment layer (Nakamura, 1989). This paper presents results of HVSR method applied to ambient vibrations for estimating the amplification factor of sedimentary layer. A total of 16 ambient vibration measurements were performed in the City of Semarang to predict the amplification factor for the shallow sedimentary layers.]]>
<![CDATA[PERENCANAAN STRUKTUR GEDUNG SILOAM HOSPITALS MEDAN ]]>
<![CDATA[Aprilliana, Fitri]]>;
<![CDATA[Angelina P., Lasmaria]]>;
<![CDATA[Partono, Windu]]>;
<![CDATA[Adi, Rudi Yuniarto]]>
<![CDATA[ Jurnal Karya Teknik Sipil Volume 3, Nomor 4, Tahun 2014 ]]>
Publisher : <![CDATA[Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro ]]>
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<![CDATA[SNI 1726- 2012 has been implemented and used as basic guidance for earthquake-resistant building design. This regulation replaced RSNI 1726- 2002 which is not suitable for Indonesia’s area that always undergoes earthquake. Siloam Hospitals Medan Building was designed by RSNI 1726- 2002. This journal describes the result of Siloam Hospitals Medan Building’s calculation by SNI 1726- 2012. Structural analysis of Siloam Hospitals Medan Building is calculated by SAP2000 software. The outputs are internal forces which are used to calculate the dimension of structure and bar which is needed. This structure uses the method of Special Moment Resisting Frame which is expected that it has a high ductility due to its location where is in soft soil earthquake risk area.]]>
<![CDATA[STABILISASI TANAH LEMPUNG EKSPANSIF DENGAN CAMPURAN LARUTAN NaOH 7,5 % ]]>
<![CDATA[Gunasro, Andreas]]>;
<![CDATA[Nuprayogi, Rizqi]]>;
<![CDATA[Partono, Windu]]>;
<![CDATA[Pardoyo, Bambang]]>
<![CDATA[ Jurnal Karya Teknik Sipil Volume 6, Nomor 2, Tahun 2017 ]]>
Publisher : <![CDATA[Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro ]]>
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<![CDATA[Tanah merupakan dasar dari suatu struktur atau konstruksi, baik itu konstruksi bangunan maupun konstruksi jalan, yang sering menimbulkan masalah bila memiliki sifat-sifat yang buruk. Sifat-sifat tanah yang buruk dan kurang menguntungkan bila digunakan sebagai dasar suatu bangunan atau kontruksi, antara lain plastisitas yang tinggi, kekuatan geser yang rendah, kemampatan atau perubahan volume yang besar dan potensi kembang susut yang besar. Berbagai cara digunakan untuk memperbaiki kekuatan dari tanah lempung ekspansif, diantaranya dengan penambahan bahan kimia (stabilisasi secara kimiawi). Untuk mengatasi permasalahan yang ada pada tanah lempung eksapnsif maka diadakan penelitian dengan menggunakan soda api (NaOH) sebagai bahan stabilisasinya. Sampel tanah lempung ekspnasif diambil dari daerah Godong – Purwodadi Km ± 49,Jawa Tengah. Komposisi campuran soda api (NaOH) sebesar 7,5 %.Hasil penelitian menunjukkan bahan stabilisasi soda api (NaOH) belum dapat memperbaiki sifat fisik dan mekanik tanah lempung ekspansif. Pada sifat fisik : berat volume, kadar air, berat jenis, dan batas-batas Atterberg mengalami kenaikan setelah distabilisasi.]]>
<![CDATA[Site Soil Classification Interpretation Based on Standard Penetration Test and Shear Wave Velocity Data ]]>
<![CDATA[Windu Partono]]>;
<![CDATA[Muhammad Asrurifak]]>;
<![CDATA[Edy Tonnizam]]>;
<![CDATA[Frida Kistiani]]>;
<![CDATA[Undayani Cita Sari]]>;
<![CDATA[Kukuh Cahya Adi Putra]]>
<![CDATA[ Journal of Engineering and Technological Sciences Vol. 53 No. 2 (2021) ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Institut Teknologi Bandung ]]>
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DOI: 10.5614/j.eng.technol.sci.2021.53.2.6
<![CDATA[Site soil classification provides vital information for predicting the soil amplification or the site factor. The site factor is important for calculating the surface spectral acceleration in the seismic design of buildings. Based on the Indonesian seismic code, site soil classification can be conducted by calculating the average standard penetration (N-SPT) resistance, the average shear wave velocity (VS) and the average undrained soil strength (Su) of the upper 30 m of a subsoil layer. Different results may be obtained at the same location when the site soil classification is predicted using N-SPT than when using VS data. The restriction of N-SPT values until a maximum of 60 compared to a VS maximum of 750 m/sec can produce different soil classes and will directly impact the calculation of the surface spectral acceleration. This paper describes the different results of site soil classification prediction calculated using the average N-SPT and the average VS, conducted at Semarang City, Indonesia. Site soil classification maps developed based on both datasets are also presented, to evaluate the different site soil classification distributions. Only soil classes SD and SE were observed using N-SPT maximum 60, whereas soil classes SC, SD and SE were observed using N-SPT maximum 120.]]>
