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INDONESIA
JURNAL KARYA TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 592 Documents
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KAJIAN PERAN TULANGAN PADA GESER INTERFACE ANTARA BETON LAMA DAN BARU Devi, Fitrilia Ulfah Karina; Mulyawati, Riana Dwi; Tudjono, Sri; Wibowo, Hardi
Jurnal Karya Teknik Sipil volume 1, Nomer 1, tahun 2012
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

ABSTRAK Pada pekerjaan perbaikan atau perkuatan struktur dengan melakukan pengecoran beton baru yang melekat pada bidang beton lama akan membentuk semacam lapisan interface beton. Penelitian mengenai bagian interface dilakukan oleh Momayez et al., 2004 dan Hak-Chul Shin et al., 2010. Namun penelitian tersebut belum memasukkan parameter peran tulangan pada interface dalam pengujiannya. Sedangkan penelitian ini mengkaji peran tulangan terhadap kekuatan geser pada interface dan pola retak yang terjadi. Benda uji yang digunakan berbentuk kubus berdimensi 20 cm x 20 cm x 20 cm sebanyak 30 buah yang tersusun dari dua bagian, yaitu beton lama sebesar 2/3 bagian dan beton baru sebesar 1/3 bagian dari kubus benda uji. Variasi beda umur pengecoran terdiri dari 7, 14, dan 28 hari. Variasi bentuk dan diameter tulangan terdiri dari bentuk Tulangan I dan Tulangan U dengan diameter 8 mm dan 10 mm. Dari penelitian disimpulkan bahwa benda uji Tanpa Tulangan mempunyai kapasitas geser paling kecil, sedangkan benda uji dengan Tulangan U memiliki kapasitas geser yang lebih besar dibandingkan dengan Tulangan I. Hal ini dikarenakan penambahan tulangan memberikan pengaruh kekuatan geser yang lebih besar serta Tulangan U bersifat lebih kaku, interlocking dan lekatan antara beton dan tulangan lebih kuat dibandingkan dengan Tulangan I. Kata kunci: interface, kapasitas geser, peran tulangan, pola retak ABSTRACT Alpha In the work of repair or strengthening the structures by casting new concrete inherent in the old concrete surface will form concrete interface. Study on the interface has already been done by Momayez et al., 2004, and Hak-Chul Shin et al., 2010. However, these studies did not include the interface parameters of the influence of steel reinforcement in the test yet. While this study examines the influence of steel reinforcement to the shear strength at the interface and the crack patterns that occur. Specimens used cuboid dimensions 20 cm x 20 cm x 20 cm 30 pieces are composed of two parts, the old concrete for 2/3 parts and new concrete for 1/3 part of the cube specimen. Variations apart in age casting consisting of 7, 14, and 28 days. Variations in the shape and diameter of the steel reinforcement consists of I Reinforcement and U Reinforcement with diameters of 8 mm and 10 mm. From the study concluded that the specimen without steel reinforcement has the smallest shear capacity, whereas specimens with U Reinforcement has a shear capacity greater than I Reinforcement. This is due to the addition of steel reinforcement influence greater shear strength and U Reinforcement is more stiff, interlocking and bonding between concrete and reinforcement stronger than I Reinforcement. Keyword: interface, shear capacity, influence of steel reinforcement, crack pattern
KAJIAN PENGENDALIAN EROSI PADA SUNGAI PEDES KABUPATEN BREBES Wirawan, Andreas Raditya; Utama, Putra; Suharyanto, Suharyanto; Edisono, Sutarto
Jurnal Karya Teknik Sipil Volume 5, Nomor 2, Tahun 2016
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Pedes River is one of a branch of Glagah River at Brebes Regency. The length of Pedes River is ±29.175 km and the catchment area is 46.565 km2. Most of resident at Pedes River work as miner of the C excavation material. Mining activity that continuously occure cause the slope of the river is quite big so the velocity of the water is raising. The velocity of the water at Pedes River cause erosion that occure along the river. This condition is compounded by meandered shape of the river and the riverbank is steep. Erosion that occure eroded riverbank and riverbed. The effect of erosion are the slope of the river grows bigger, and landslide at some place in the river. Check dam is one of the solution to minimize the slope of the riverbed. But for the comprehensive solution along the river, study about erosion control is needed to determine solution along the Pedes River.
EVALUASI KELONGSORAN PADA RUAS JALAN WELERI – PATEAN KM50 DAN ALTERNATIF PENANGANANNYA Tanro, Danni; Hidayat, Moh. Ariawan; Retno Wardani, Sri Prabandiyani; Atmanto, Indrastono Dwi
Jurnal Karya Teknik Sipil Volume 2, Nomor 1, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Road between Weleri - Patean is a national road that has an important role in regional and national economic development. The road is an alternative route that connects the “Pantura” to the “Selatan” route. In January 2012, there was a catastrophic landslide occurred in kilometers 50 from Weleri to Patean. It’s 6.8 meters in height and 8 meters in lenght landslide. As result,, only half the roads are passable by vehicles, and by the implementation of on way system, the flow of traffic became pretty slow.After slope stability analysis using Fellenius method is performed, it is shown that the SF or safety factor of the slope is 0.665 and for 1.284 by using Plaxis V.8.2 program. Both SF less than normal safety factor which is 1.3. So it can be inferred that the slope is in critical condition. Therefore, it is very important to install special reinforcement to restrain or stabilize the slope.The first alternative of slope reinforcement is gabion, the second alternative is retaining wall and the third alternative is steel sheet pile reinforcement. Based on finite element method calculation using Plaxis V.8.2 software, it is found that gabion changes the safety factor of the slope from 1,284 to 1.512 and gives  4.645 cm displacement. Meanwhile, retaining wall increases the value of safety factor from 1.284 to 1.538 and gives 4.365 cm displacement. In otherhand, steel sheet pile reinforcement gives a noticeable safety factor value which is 2.075 and gives 2.932 cm displacement. Compared to the other alternatives, steel sheet pile reinforcement performs the best stabilization reinforcement, resulting in high safety factor value and small displacement value, therefore, steel sheet pile reinforcement is is considered as the best alternative solutions for landslide in Weleri – Patean Km 50 Road.
PENGARUH POLA KEBIJAKAN PRODUKTIVITAS KONSTRUKSI INDONESIA TERHADAP DAYA SAING INFRASTRUKTUR Imam Adhie Prakoso; Stefanus Marco Andromeda; Ilham Nurhuda; Parang Sabdono
Jurnal Karya Teknik Sipil Volume 6, Nomor 4, Tahun 2017
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Sektor konstruksi mempunyai peran penting dalam menggerakkan sektor riil dan meningkatkan pertumbuhan ekonomi dengan menciptakan lapangan kerja dan peningkatan produktivitas serta daya saing konstruksi. Untuk itu diperlukan adanya kebijakan – kebijakan yang mengatur tentang hal – hal yang mempengaruhi produktivitas (5M) terutama pada bidang konstruksi sehingga terjadi peningkatan produktivitas yang secara tidak langsung akan meningkatkan daya saing infrastuktur. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pola kebijakan produktivitas konstruksi Indonesia terhadap daya saing infrastruktur berdasarkan data – data seperti UU Jasa Konstruksi, UU Ketenagakerjaan, Peraturan Presiden, Peraturan Menteri ,Peraturan Daerah dan Standar Nasional Indonesia (SNI) beserta data – data sekunder seperti jumlah penduduk Indonesia, jumlah tenaga kerja konstruksi, jumlah tenaga kerja konstruksi ahli dan terampil, nilai konstruksi yang diselesaikan dan proyek strategis nasional yang dikeluarkan oleh Badan Pusat Statistik (BPS). Untuk mengolah data – data tersebut dipakai metode penelitian yang digunakan adalah analisis deskriptif dan metode Crosstab. Kesimpulan dari penelitian ini adalah kebijakan – kebijakan yang dibuat pemerintah dalam hal produktivitas konstruksi secara tidak langsung berpengaruh terhadap daya saing insfrastuktur seperti semakin meningkatnya nilai konstruksi yang diselesaikan, semakin banyaknya proyek stategis nasional yang rampung  sesuai dengan tahun pengoperasian dan peningkatan tenaga kerja konstruksi yang bersertifikasi.
KAJIAN STRUKTUR PENGAMAN PANTAI SIGANDU, BATANG Widhianto, Sidiq Leonanda; Kharisma, Dicki; Suharyanto, Suharyanto; Hardiyati, Siti
Jurnal Karya Teknik Sipil Volume 3, Nomor 4, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Generally, the problems that occur in Sigandu Beach - Batang is abrasion, resulting in damage to the beach. This has an impact on the coastal areas along the coast of Sigandu, among others land that has been covered with sea water exceeds 2 m within 5 months, trees and houses around the beach collapsed due to erosion beach by sea water. The information and supporting data are collected from several literatures, interview, laboratory research, and a collection of documents from several institutions, including the Department of Marine and Fishery of Batang, BPDP and BPPT of Yogyakarta in 2013, BMKG Climatology Station in Semarang, Soil Mechanics Laboratory of Diponegoro University and several other institutions. The dominant wind direction effect used in the calculations come from the Northwest and North. Wave height representative used a H33% at 2,94 m and a representative period T33% 8,82 seconds. Sea level caused of tide by the calculation of admiralty generating value HWL =+0.49 m; MSL = ± 0.00 m; LWL = -0.49 m. The tide of Sigandu Beach included in mixed tide prevailing semidiurnal. In the calculation, the wave breaking occurs at a depth of 4.22 m at a distance of ± 787.09 meters from the shoreline. Based on studies of the selection safety structure from some aspects of the Sigandu Beach, the elected lower threshold breakwater structure (Pegar) Geotube. Because a bad soil conditions in Sigandu Beach, then there needs to be retaining structures on Geotube is by giving it a pile of bamboo and bamboo mattresses that had been assembled under the structure of Geotube. Geotube structure is composed of Giant Sand Bag with dimension length 20 m, width 2 m and 1,5 m high with a weight of 6 tons/m' and Sand Bag with dimension length 2,2 m, width 1,4 m, and height 0,4 m with a weight of 1,12 tons/m'. To be expected to form the salient, the structure compiled in series with spacing distance of 10 m with a 100 m length of the building and placed 75 m from the shoreline.
PERENCANAAN EMBUNG TAMBAKROMO UNTUK MEMENUHI KEBUTUHAN AIR BAKU Fahmi, Mushafa; Halim, Fandy; Atmojo, Pranoto Samto; Sriyana, Sriyana
Jurnal Karya Teknik Sipil Volume 2, Nomor 4, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

The increasing scarcity of water resources, there needs to be an effort that must be implemented to meet the needs of the water. One way PT. Indocement to meet the water requirement of 60 liters / second to harness the potential of Beku river with Tambakromo Embung development plan, in Wukirsari Village, District Tambakromo, Pati. Based on the mainstay discharge analysis by the method of FJ mock obtained the discharge of 120 liters / sec. For the body design of the small dam used the flood discharge hydrological data with HSS Gamma I method with flood discharge plan 1000 years return period amounted 116.92 m3/second. Tambakromo Small Dam capacity is 5,000,000 m3. Tambakromo Small Dam height is 20 meters, 7 meters wide summit reservoir, spillway width of 15 meters, spillway height is 2 meters. Estimated cost to build Tambakromo Small Dam amounted Rp.33.874.000.000, 00.
ANALISIS PERUBAHAN PERILAKU PENGENDARA SEPEDA MOTOR PADA RUAS JALAN DI KOTA SEMARANG (Studi Kasus di Jalan Pandanaran dan Jalan Soekarno Hatta) Wahyuningsih, Dewi; Akbar, Fadhil; Yulipriyono, EPF.Eko; Suptiyono, Supriyono
Jurnal Karya Teknik Sipil Volume 6 ,Nomor 1, Tahun 2017
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Sejak diterbitkannya MKJI 1997, kondisi yang dialami prasarana dan sarana transportasi jalan serta penggunanya, baik dari segi kuantitas maupun kualitas, sudah tidak sesuai lagi dengan karakteristik lalu lintas dan kondisi prasarana saat itu. Pada kota Semarang, jumlah kendaraan bermotor khususnya pada moda sepeda motor mengalami peningkatan yang cukup signifikan. Kondisi tersebut diduga akan mengubah parameter analisis dalam MKJI. Peningkatan jumlah sepeda motor, perilaku pengendara yang berbeda-beda, meningkatnya perkembangan mesin motor mengakibatkan meningkatnya nilai emp MC. Hal ini berpengaruh pada kapasitas jalan dan kecepatan lalu lintas. Karakteristik lingkungan juga merupakan salah satu faktor penyebab meningkatnya nilai emp MC. Hasil dari analisis didapatkan nilai emp untuk jalan Soekarno Hatta (jalan perkotaan terbagi) adalah emp HV = 0,705 dan emp MC = 0,459 sedangkan untuk jalan Pandanaran (jalan perkotaan tak terbagi) adalah emp HV = 1,055 dan emp MC = 0,418. Dengan adanya dominasi sepeda motor maka perlu adanya pemberlakuan jalur khusus sepeda motor.
PENGENDALIAN BANJIR KAWASAN SIMPANG LIMA SEMARANG Krissetyatno, Febri Wisda; Budi, Ganang Setyo; Darsono, Suseno; Kodoatie, Robert J.
Jurnal Karya Teknik Sipil Volume 3, Nomor 1, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Simpang Lima area of Semarang is administration region, education residence, service, and industry which are constructed in the center of Semarang sub district. Center Semarang region is an area where is topographically flat. Industry development, trade, and rapid growth people bring Simpang Lima are of Semarang as the prominent center growth of Semarang city. In addition flood happened in region of Simpang Lima area of Semarang is caused by the lack of drainage performance, high sedimentation, and not yet maximum in flood control using provision of water pumps. There are some scenarios to solve that proble,. the first scenario is by fixing the channels in Simpang Lima are of Semarang in order to increase the capacity of channel flow. This way includes widening the channel, fixing the slope of bottom channel, and scanting the discourtesy of channel flow wall. Second scenario is by making new channel in Simpang Lima cycle, because of the difficult to rehabilitate the existing channel which locates under sidewalk of Simpang Lima cycle, so taken solution to make new channel. The new channel locates under the road of Simpang Lima cycle and uses closed channel type. The third scenario is by maximizing the capacity in Kartini Pump Station. Hope by maximizing the capacity of pump may fasten the process of water disposal from Kampung Kali River to Banjir Kanal Timur River and reduce water level in Simpang Lima area of Semarang drainage channel downstream section.
PERENCANAAN PERBAIKAN MUARA SUNGAI BANJIR KANAL TIMUR SEMARANG Citra Ermas Victoria; Irene Bernike Hutapea; Salamun Salamun; Sugiyanto Sugiyanto
Jurnal Karya Teknik Sipil Volume 7, Nomor 1, Tahun 2018
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Salah satu permasalahan yang sering terjadi di berbagai sungai adalah permasalahan sedimentasi. Sedimentasi seringkali menjadi awal bagi permasalahan lainnya, seperti banjir, dan terhambatnya aliran sungai. Sedimentasi kerap diakibatkan oleh kecepatan aliran yang rendah. Kecepatan aliran yang rendah ini kemudian mengakibatkan terjadinya endapan yang berpotensi pada pendangkalan dasar sungai. Kawasan muara dari suatu sungai adalah yang paling rawan terhadap masalah ini. Letaknya yang berada berdekatan dengan garis pantai membuat aliran menjadi sangat lambat. Oleh karena itu pada muara yang kecepatan alirannya lambat, perlu dilakukan usaha untuk menaikkan kecepatan aliran.Dalam kasus Sungai Banjir Kanal Timur, melalui simulasi hidraulis dengan HEC-RAS 5.0.3. didapati kecepatan aliran pada saat pasang tertinggi dengan debit 79.0025 m3/detik adalah 0.18 m/detik, dengan diameter butiran d50 sebesar 0,0059 mm. Jika dievaluasi dengan grafik Hjulstrom maka kondisi tersebut akan jatuh pada fase transisi, dimana sedimen baru akan mulai bergerak.Penempatan krib corrugated concrete sheet piles W 350 sebanyak 8 buah di kedua sisi sungai dengan jarak 30 m antar sheet piles, sepanjang 1000 m dari muara, pada debit 79,0025 m3/detik, ternyata memberikan penambahan kecepatan sebesar 0,72 m/detik. Sehingga kecepatan pada muara Sungai BKT menjadi 0,8 m/detik. Jika dievaluasi dengan grafik Hjulstrom maka kondisi tersebut akan jatuh pada fase bergerak atau fase dimana sedimen sudah tertransportasi.
PENGARUH JARAK DAN VARIASI PENEMPATAN MULTI-INKLUSI BERBENTUK LINGKARAN TERHADAP PERILAKU BETON Anastasia Yesica; Rakhma Nurfitriani Editia; Rudi Yuniarto Adi; Han Ay Lie
Jurnal Karya Teknik Sipil Volume 4, Nomor 4, Tahun 2015
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

The stress-strain response of the basic concrete making material, i.e. the mortar and aggregates, are well known. In general, the aggregate behaves linearly up till failure, possessing a very high ultimate compression strength and stiffness. The behavior of mortar is non-linear, even at low loading levels. The resulting composite material, the concrete, exhibits a less stiff response, in combination with degradation in strength. This study looked into the influence of the centroid distance and configuration of a 100x100x50 mm mortar specimen. Two inclusion configurations were considered, parallel and diagonal to the line of loading with the distance variety. It was shown that the centroid distance and configuration strongly influenced the strength, the stiffness, and failure mode. The strength behavior had a minimum and a maximum bifurcation point, while the stiffness response increased, as a function of an increase in the inclusion-to-specimen volume ratio. Visual observation of the cracking pattern revealed that the initial cracking was always situated at the interface between the aggregate and mortar in tension and propagated through the mortar matrix. It was also perceived that the crack propagation path of the very dense, diagonally arranged inclusions deviated from the columnar configuration observed from the parallel inclusion formation.

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