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Jurnal Teknik Sipil Unika Soegijapranata : G-SMART (Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air, Transfortasi)
Published by Universitas Katolik Soegijapranata
ISSN : 26205297     EISSN : 26205297     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Transportation
Jurnal G - SMART : Jurnal Teknik Sipil Unika Soegijapranata yang meliputi Geoteknik, Struktur, Manajemen Konstruksi, Sumber Daya Air dan Transportasi.
Arjuna Subject : -
Articles 96 Documents
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Pengaruh Substitusi Sebagian Agregat Halus Dengan Abu Batu Dan Penambahan Fly Ash Terhadap Kuat Tekan Beton Heronimus Lumenta; Stefanus Tri Bintoro; David Widianto; Widija Suseno
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1765

Abstract

The purpose of this research is to determine concrete compressive strengths with screenings variation of 0%, 25%, 50%, and 75% by addition the weight of fine aggregate (sand) and fly ash 15% by the weight of cement. The background of this research is increasing demand for concrete and the limited availability of concrete substances. Therefore innovation is needed to maintain the availability of concrete constituent materials and also to improve the quality of concrete. Up until now a lot of researches have been carried out regarding of substitute materials or added materials that can be substituted in making concrete. Based on this background the writer chose one of the added ingredients that can improve the quality (compressive strength) of concrete, namely fly ash. Fly ash produced from the remaining combustion of coal in the Steam Power Plant (PLTU).  While for substitution materials, the writer used the screenings that substituted by sand. In this study the writer used four variations of concrete with a ratio of 0% screenings : 100% sand, 25% screenings  : 75% sand, 50% screenings  : 50% sand, 75% screenings: 25% sand. Every variant was added with fly ash as much as 15% of the weight of cement.The result of this research was indicated that variations 25% screenings, 75% sand plus  fly ash of the weight of cement that having the highest quality of concrete among the other variations were as much as 298,95 kg/cm2 at the age of 7 days; 403,23 kg/cm2 at the age of 28 days; and 456,53 kg/cm2 at the age of 42 days. This was because means of air vents was in concrete filled by granules of screening so that the concrete became denser and made concrete strong press was increased.
Analisis Ketersediaan Air Waduk Jatiluhur Sebagai Dasar Penerapan Pola Operasi Pembangkit Listrik Tenaga Air Rumboko Kalbuardhi; Djoko Suwarno
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1573

Abstract

Analysis of the availability of water in a reservoir or mathematical approach required Jatiluhur physical, in order to predict discharge mainstay as the operating pattern of HYDROPOWER that was later used as a guide the management of the reservoir itself as initial predictions. With data-daily rainfall data of the 3 IE rain Rain Station station I, II and III, the discharge outflow, as well as the relative humidity-temperature reservoirs during the 2014 to 2016, then to estimate the availability of specialty discharge data processed with the method developed by Dr. f. j. Mock in 1973. This research is a descriptive quantitative research using secondary data obtained from relevant agencies namely Jasa Tirta II. This study aims to learn the specialty processed with debit method Mock with 15 precipitation process data daily range in year 2014 – 2016, produces a result with mainstay debit results Jatiluhur Reservoir Water Availability IE 814,399,963.00 m3/year, with 0.063341% RMSE with debit data field and serve as the basis of the operating pattern of Jatiluhur. The results of the mock model parameters where the average value of open land of outcrops (m) 39.17%, the value of the coefficient Infiltration (i) of 0.5, the Soil Moisture Capacity (SMC) of 200 mm, Flow Coefficient (K) amounted to 0.7, and Initial Storage of 100 mm.
Studi Angkutan Pekerja Di Kawasan Industri Sebagai Salah Satu Upaya Mengurangi Kemacetan Di Kota Semarang Albert Setyo Handoko; Elrangga Sadewa Nugroho; Rudatin Ruktiningsih
G-SMART Vol 3, No 2: Desember 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i2.1846

Abstract

Industrial estates have a large scale workforce. Workers usually come from different locations, so they need transportation to get to the Industrial Estate location, because of the large movements of industrial workers. Especially at the turn of the morning and evening work shifts, at these hours the number of vehicle workers contributes to traffic congestion on the roads it passes. The survey was conducted at the entrance of the industrial area to determine the level of congestion that occurred at the entrance of the Industrial Zone road section, namely on the Kaligawe road, Jalan Candi Raya, Jalan Pantura Semarang - Kendal KM.12 especially when there was a shift of work shifts in terms of road capacity based on the Indonesian Road Capacity Manual. To determine the level of congestion if after provided worker transportation. From the data obtained, the largest VCR results in the Wijayakusuma Industrial Zone are 3.177 pcu / hour when the entry hours from the direction of Kendal are classified as the most jammed; in the Terboyo Industrial Zone is 0.917 pcu / hour when the hour enters from the direction of Demak; in the Temple Industrial Area is 0.875 pcu / hour when the hours go out towards Semarang are classified as quiet. After the workers of private vehicle users are transferred using buses, the largest VCRs are obtained from Type A buses with a capacity of 25 passengers, thus the value of VCRs in the Wijayakusuma Industrial Zone is 0.188 pcu / hour in the direction of Kendal; in the Terboyo Industrial Area is 0.066 pcu / hour in the direction of Demak; in the Temple Industrial Zone is 0.122 pcu / hour in the direction of Semarang. Planning to determine the number of buses that must be provided for each Industrial Estate, as well as efficient bus operating time.
Permodelan Hidrologi Daerah Aliran Sungai Sengkarang Kabupaten Pekalongan Dengan Perangkat Lunak HEC-HMS Angsa Dilaguna Biru; Tamara Budi A; Budi Santosa
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1764

Abstract

Along with the increase of human population, the necessity of housing will increase as well. Therefore land use change cannot be avoided. Land use change on watersheds (DAS) is one of the causes of flood. The purpose of this study is to examine the changes of hydrograph on watersheds caused by land use change within 20 years. The data used in the form of rainfall data in 2011-2016, land use maps in 2011 and 2031 and topographic maps of soil types. Using HEC-HMS software will be obtained the results of 2011 and 2031 river flow hydrograph. The results of this modeling were compared to find out the Peak Discharge at weir Ps. Kletak. In 2-year return period of 2011 and 2031 are 662,6 m3/s and 770,8 m3/s with increase 16.33%, and for a 50-year return period of 2011 and 2031 are sebesar 1643,2 m3/s dan 1774,2 m3/s with increase 7.97%.
Studi Penerapan Area Traffic Control System (ATCS) Di Beberapa Simpang Kota Semarang Descraredo Henky Sunyoto; Febriansyah Ramadhan; Rudatin Ruktiningsih
G-SMART Vol 3, No 1: Juni 2019
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v3i1.1766

Abstract

The increasing of transportation needs in big cities had almost a same problem, which is congestion on roads especially at the crossroads. Semarang is one of the cities located at a strategic point. Therefore, Area Traffic Control System came as a solution. Area Traffic Control System (ATCS) is a system that controlling road traffic intersections by using traffic lights where the setting of traffic light at each intersection was coordinated, so the road users could get a minimum delay. Government of Semarang plans to install  ATCS at the intersection of PRPP and Madukoro. The location of study is intersections of PRPP and Madukoro, where the intersection is a cross-city connecting route that is crossed by heavy and light vehicles and vehicles that going to and out from A. Yani airport. The method that used in this study is a survey method, including surveying traffic volume, queue length, delays, and light phase. The results then processed using a formula from the Indonesian Road Capacity Guidelines (PKJI'14). The results of this study is alternative coordination with a cycle time is 244 seconds for each intersection. Intersection I starts at 0 seconds, intersection II starts at 90 seconds. The degree of saturation obtained for the north and south PRPP intersections is 0. 28, for the east is 0. 36, for the west is 0. 42, while for intersection of north Madukoro  is 0. 35 , for the south is 0. 36, for the east is 0. 39, and for the west is 0. 45 So that the application of the Area Traffic Control System (ATCS) can have a positive resolution for reducing congestion and  get good traffic flow in the intersections of Madukoro and PRPP.
Kajian Kuat Lentur Balok Beton Komposit Dengan Angkur Baja Tulangan Johanna Indah Mannuela; Novita Cahyaningtyas
G-SMART Vol 2, No 2: Desember 2018
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gs.v2i2.1578

Abstract

Concrete is a structural element in a building that is widely known and utilized. However, in the construction world there are various problems that occur, one of the problems is on concrete beams. Well planned and designed construction always changes, failures and damage. One way of strengthening and improving the structure is with the method of composting the old concrete beams with new concrete blocks with reinforced steel anchors reinforced with chemicalanchor. This research uses a cylindrical test specimen, normal concrete beam measuring 15 cm × 15 cm × 60 cm, monolith concrete beam measuring 15 cm × 30 cm × 60 cm, and composite concrete beam with reinforced steel anchors reinforced with chemicalanchor HILTI HIT RE-500 V3 is 15 cm × 30 cm × 60 cm. The test was carried out to determine the bending strength values of the normal beam and composite beams and to know the increase of the bending strength values between normal, monolithic and composite concrete beams. The size of the maximum bending moments of concrete beams length 15 cm × 15 cm × 60 cm the biggest is 4820 kg. For the maximum bending moments of the new concrete beam specimens measuring 15 cm × 15 cm × 60 cm is 4110 kg. The average value of long bending strength of old concrete beams measuring 15 cm × 15 cm × 60 cm is 53.06 kg/cm2. For the average value of new flexible concrete beams measuring 15 cm × 15 cm × 60 cm is 51.91 kg/cm2. The maximum bending moments of monolith concrete beam specimens measuring 15 cm × 30 cm × 60 cm is 14733.33 kg. The average flexural strength is 49.11 kg/cm2. The maximum bending moments of composite concrete beam is 15 cm × 30 cm × 60 cm the largest is 13100 kg. For the average bending strength value is 43.67 kg/cm2.
Efektivitas Kolam Retensi Terhadap Pengendalian Banjir Alexander Nugi Pramono; Prasetyo Tri Saputro
G-SMART Vol 4, No 2: Desember 2020
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gsmart.v4i2.2331

Abstract

Kecamatan Semarang Utara merupakan salah satu wilayah di Kota Semarang yang sampai saat ini masih dihadapkan dengan permasalahan banjir, khususnya saat musim penghujan. Pada tanggal 19 Ferbruari 2008 banjir besar telah merendam Staisun Tawang dan sekitarnya dengan ketinggian banjir mencapai 50 cm. Hal ini sangat memprihatinkan mengingat pada wilayah tersebut terdapat beberapa bangunan penting yang notabene harus dihindarkan dari resiko banjir. Perubahan tata guna lahan diduga menjadi salah satu penyebab wilayah ini menjadi langganan terendam banjir saat musim penghujan. Dengan maraknya pembangunan di wilayah tersebut mengakibatkan lahan yang semula memiliki daya resap air yang besar menjadi lahan masive dengan daya resap air yang kecil. Selain itu diperparah dengan sistem drainase yang buruk, dimana kolam retensi yang terletak di depan Stasiun Tawang ternyata belum mampu menghindarkan Stasiun Tawang dari genangan banjir. Semestinya dengan adanya kolam retensi Polder Tawang ini diharapkan mampu mengeringkan Stasiun Tawang dan sekitarnya dari banjir, mengingat fungsi kolam retensi sebagai pengendali debit puncak banjir. Tujuan dari penelitian ini ialah menganalisa deit puncak aliran yang masuk ke kolam retensi Polder Tawang. Sehingga dengan menggunakan Program EPA SWMM hasil simulasi akan memunjukan debit puncak aliran pada masing-masing saluran. Dengan diketahuinya debit aliran tersebut dapat dilakukannya kajian mengenai optimalisasi kolam retensi Polder Tawang. Dengan dilakukannya optimalisasi kolam retensi ini diharapkan dapat mengeringkan atau membebaskan Stasiun Tawang dan sekitarnya dari resiko banjir.
Evaluasi Kinerja Sistem Jaringan Drainase Panggung Lor Kota Semarang Calvin Tanuwijaya; Made Wijaya Kusuma
G-SMART Vol 4, No 1: Juni 2020
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gsmart.v4i1.2123

Abstract

Kecamatan Semarang Utara merupakan wilayah Semarang bagian utara yang terdiri dari sembilan kelurahan, salah satunya adalah kelurahan Panggung Lor. Sejak tahun 1993, banjir dan rob menjadi langganan warga kelurahan Panggung Lor, Semarang Utara. Pada tahun 2017 situasi di wilayah Panggung Lor mulai berubah. Faktor yang menyebabkan banjir di daerah Panggung Lor mulai berkurang salah satunya adalah karena bantuan stasiun pompa. Tujuan penelitian ini adalah untuk mengetahui kondisi eksisting, kapasitas saluran drainase serta menganalisis dan mengevaluasi kinerja pompa di daerah Panggung Lor. Analisa menggunakan program EPA SWMM 5.1. Pada kondisi eksisting, terdapat kerusakan pada dinding badan saluran drainase di Jalan Kuala Mas 15. Berdasarkan hasil analisis, saluran drainase yang ada di Jalan Telaga Mas Raya kelurahan Panggung Lor masih mampu menampung debit air yang mengalir sebesar 86% dengan total inflow 13,65 m3/s. Pemodelan yang menggunakan periode ulang 2 dan 10 tahunan, apabila pompa aktif sesuai kondisi eksisting tidak akan menyebabkan flooding. Jika menggunakan periode ulang 25 tahunan, masih menyebabkan flooding sehingga perlu penambahan pompa dengan debit 0,7 m3/detik di rumah pompa 3 dan 1 pompa dengan debit 1 m3/detik di rumah pompa 4.
Kajian Kawasan Risiko Banjir Di Sungai Banjir Kanal Barat Dengan Mempertimbangkan Penurunan Muka Tanah (Land Subsidence) Ivan Kurniawan; Maria Marcellina Harnita Permatasari; Budi Santosa
G-SMART Vol 4, No 2: Desember 2020
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gsmart.v4i2.2332

Abstract

Kota Semarang sebagai ibu kota Provinsi Jawa Tengah memiliki curah hujan tinggi yang mempengaruhi peningkatan muka air. Kota Semarang tak jarang dilanda bencana banjir karena sungai tidak lagi mampu menampung air sehingga melimpas ke daratan di daerah sekitarnya. Selain itu, penurunan muka tanah menjadi salah satu faktor terjadinya banjir di Kota Semarang. Oleh sebab itu, dilakukan pengkajian terhadap pemodelan kawasan risiko banjir pada Sungai Banjir Kanal Barat dengan menggunakan perangkat lunak HEC-RAS.Tujuan utama dari peneltian ini adalah mengetahui tingkat risiko banjir pada area di sekitar Sungai Banjir Kanal Barat. Penelitian ini melakukan kegiatan perhitungan curah hujan harian maksimum, mencari hidrograf aliran dan melakukan pemodelan Sungai Banjir Kanal Barat dengan menggunakan metode unsteady flow.Hasil analisis dari penelitian ini berupa peta risiko banjir kawasan Sungai Banjir Kanal Barat sebelum dan sesudah penuran muka tanah selama 10 tahun. Wilayah yang memiliki tingkat risiko banjir tertinggi dalam penelitian ini adalah Panggung Lor. Selama 10 tahun, peningkatan jumlah penduduk terpapar naik sebesar 5,52% pada kawasan Sungai Banjir Kanal Barat.
Analisis Kebutuhan Fasilitas Penyeberangan Orang Pandu Astha Lazuardi; Rizky Alfiandhi Prasetya; Djoko Setijowarno; Rudatin Ruktiningsih
G-SMART Vol 4, No 1: Juni 2020
Publisher : Universitas Katolik Soegijapranata Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24167/gsmart.v4i1.1894

Abstract

Bersamaan dengan kemajuan dan perkembangan populasi pada Kota besar volume kendaraan dan pejalan kaki semakin meningkat. Hal ini akan mengakibatkan konflik antara volume kendaraan yang melintas dengan pejalan kaki yang menyeberang. Permasalahan yang terjadi yaitu konflik antara penyeberang jalan dengan kendaraan bermotor yang memungkinkan terjadinya kecelakaan. Untuk menghindari terjadinya kecelakaan maka diperlukan fasilitas penyeberangan orang. Penelitian ini bertujuan untuk menganalisis akan kebutuhan fasilitas penyeberangan bagi pejalan kaki dan memberikan rekomendasi jenis fasilitas penyeberangan orang yang tepat. Pengumpulan data dilakukan dengan cara survey langsung di titik lokasi yang telah ditentukan yang diamati selama tiga hari pada jam – jam sibuk. Data- data yang diambil berupa volume kendaraan, volume pejalan kaki, dan geometri jalan. Data yang didapatkan digunakan untuk mendapatkan nilai PV2. Nilai tersebut akan digunakan untuk menentukan jenis fasilitas penyeberangan orang yang sesuai dengan titik lokasi yang ditentukan. Hasil perhitungan PV2 untuk empat titik lokasi yang diamati didapatkan tiga lokasi yang layak untuk direncanakan pembangunan fasilitas penyeberangan orang, yaitu pada ruas jalan Pandanaran di titik lokasi toko peralatan AGUSTA berupa pelican crossing (lampu swakelola) dengan nilai PV2 139.332.136,5. Ruas jalan MT Haryono di titik lokasi Java Mall berupa pelican crossing (lampu swakelola) dengan lapak tunggu yang nilai PV2  223.380.673,3. Ruas jalan Teuku Umar di titik lokasi Pasar Jatingaleh berupa penyeberangan tidak sebidang dengan nilai PV2 1.087.398.217. Satu lokasi tidak memerlukan fasilitas penyeberangan orang, yaitu pada ruas jalan Teuku Umar depan SMK Antonius tidak diperlukan fasilitas penyeberangan orang.

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