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Eddy Purwanto
Universitas Lampung
Civil Engineering, Building, Construction & Architecture

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Tinjauan Momen Lentur Pelat Dua Arah dengan Metode Perencanaan Langsung dan Metode Elemen Hingga Fahri, Muhammad; Suyadi, Suyadi; Purwanto, Eddy
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 1 (2016): Edisi Maret 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i1.349

Abstract

This research conducted to study and determine the bending moment plate by using the DirectDesign Method and Finite Element Method. In the procedure of calculation of concrete structuresfor buildings, namely SNI 2847 2013 has been set up several plates planning methods one ofwhich is a method of using the Direct Design Method analysis. Finite element method (FEM) isdividing a complex problem into small elements where a simpler solution can be easily obtained.The theory used in plate analysis with the FEM is Kirchhoff-Love theory in which the limits areused specifically for the analysis of thin plates with small deflections by ignoring the transverseshear forces. The program is used by applying the Finite Element Method in this study is aMicrosoft Excel as a tool for calculations and modeling program SAP 2000 as a plate structure.From the calculations that the value of deflection and the bending moment on the plate twodirections with varying results.From the results obtained show that the static moments of totalfactored Direct Planning Method and the Finite Element Method showed results equal to eachother . Distribution moments on the foundation and interior plate field differently due to directPlanning Method using a great moment coefficients in pedestal while the Finite Element Methodusing transition stiffness matrixKeywords:Direct Design Method, Finite Element Method, Two way slab, SAP 2000
Pengaruh Penambahan Fiber Baja Seling dengan Volume Fraction 0,4%, 0,6% dan 0,8% terhadap Kuat Tekan dan Kuat Tarik Lentur pada Beton Mutu Normal. Marvin, Tiffany; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 3 (2016): Edisi September 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i3.402

Abstract

This research was conducted to study and determine the influence of steel sling fiber 0,4%, 0,6% and 0,8% volume fraction of compressive strength and flexural strength on normal quality concrete. This study used an experimental method in the Laboratory of Material and Construction Engineering Faculty, University of Lampung. The compressive strength test specimen is a 30 cm height and 15 cm diameter cylinder and the flexural strength test specimen is a 40 cm length, 10 cm width and 10 cm height beam. The compressive strength and flexural strength test of  normal quality concrete with 0,4%, 0,6% and 0,8% volume fraction held after 14 and 28 days. The maximum compressive strength and flexural strength value are at 0,6% volume fraction and decrease at 0,8% volume fraction. The maximum compressive strength is 27,5537 MPa at 0,6% volume fraction and the optimum value  from polynomial trendline chart is 27,6028 MPa at 0,5754% volume fraction. The maximum flexural strength is 5,6899 MPa at 0,6% volume fraction and the optimum value from polynomial trendline chart is 5,7163 MPa at 0,5687% volume fraction. The steel sling fiber didn’t affect a high increase of the compressive strength, but this steel sling fiber had a high flexural strength which is 1733,46 MPa, so it affected a significant increase of the flexural strength test.Keywords : compressive strength, flexural strength, fiber concrete, steel sling fiber
Analisis Konstruksi Jembatan Busur Rangka Baja Tipe A-half Through Arch Olyvia, Yumna Cici; Bayzoni, Bayzoni; Purwanto, Eddy
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 3 No. 1 (2015): Edisi Maret 2015
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v3i1.428

Abstract

Indonesia is an archipelago and has an important role connecting bridges between islands . Theneed for long -span bridges and lightweight materials and consist artistic value , then the arc steeltruss bridge is an alternative of the problem. In this research will focus on the type a half througharc.The bridge is design to 120 m,span and 12 m,height with a transverse dimension of thevehicle floor complete with sidewalk is 11 m to 2 lanes 2 -way with pavement width of 1 m .Loading calculations used in the planning of the bridge is based on the regulation BMS 1992 andRSNI T - 02-2005 and calculation of the power structure refers to RSNI T - 03-2005 and SNI 03-1729-2002.The results of the study are obtained composite vehicle floor plates , with a reinforced concreteslab thickness of 250 mm . Transverse girder and longitudinal girder using iwf.900.300.28.16iwf.400.200.13.8 with BJ 55. The connection between the ransverse girder and longitudinal girderusing bolts with A325 quality with a diameter of 25 mm with 10 mm thick plate BJ 34. The mainstructure of the arc in the form iwf.400.400 .21.13 . The main structure connection using bolts withA325 quality with a diameter of 35 mm with 2 5 mm thick plate BJ 5 0 .Keywords : bridge , A - Half Through Arch , steel
Pengaruh Penambahan Fiber Baja Seling Dengan Volume Fraction 0,4% Terhadap Kuat Tekan dan Kuat Tarik Lentur dengan Tinggi Beton Serat 0; 0,25; 0,50; 0,75 dan 1 Pada Beton Mutu Normal bimantara, bagus; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 4 (2016): Edisi Desember 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i4.501

Abstract

AbstractConcrete is one of the important parts in the development of infrastructure building. Many advantages obtained from the use of concrete, nevertheless there is a shortage which is weak against tensile and ductile. The weakness of concrete can be improved by adding fiber into the concrete mix evenly with random orientation. This study was conducted to determine the effect of addition of wire rope fiber on compressive strength and flexural tensile strength with the height of fiber-reinforced concrete 0; 0.25; 0.50; 0.75 and 1 on normal strength concrete. This study used an experimental method which is conducted at the Laboratory of Materials and Construction Faculty of Engineering, University of Lampung. The sample for compressive strength test is a cylinder with a diameter of 15 cm and 30 cm in height, while the sample for flexural tensile strength test is a block with a length of 40 cm, 10 cm in width and 10 cm in height. The testing for the compressive strength and flexural tensilestrength of normal concrete with high-quality fiber-reinforced concrete 0; 0.25; 0.50; 0.75 and 1 performed after 14 and 28 days. Maximum compressive strength and flexural strength occurs at a height of 0,75 fiber-reinforced concrete. The maximum compressive strength is 27.3649 MPa, increasedby 3.5714%. The maximum flexural strength is 5.4880 MPa, increasedby 18.9475%. The addition of wire rope fiber does not make a major contribution to the increase of compressive strength, but the flexural tensile strength. The wire rope fiber in this study has high tensile strength, i.e. 1733.46 MPa so it can provide a significant increase in the flexural strength. Keywords : compressive strength, flexural strength, fiber concrete, wire rope fiber  AbstrakBeton merupakan salah satu bagian penting dalam perkembangan infrastruktur bangunan. Banyak kelebihan yang didapatkan dari penggunaan beton, meskipun demikian terdapat kekurangan yaitu lemah terhadap tarik dan bersifat getas. Kelemahan beton dapat diperbaiki dengan menambah serat kedalam adukan beton secara merata dengan orientasi acak. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan serat baja seling terhadap kuat tekan dan kuat tarik lentur dengan tinggi beton serat 0; 0,25; 0,50; 0,75 dan 1 pada beton mutu normal. Studi ini menggunakan metode eksperimen yang dilakukan di Laboratorium Bahan dan Konstruksi Fakultas Teknik Universitas Lampung. Benda uji kuat tekan berupa silinder dengan diameter 15 cm dan tinggi 30 cm, benda uji kuat lentur berupa balok dengan panjang 40 cm, lebar 10 cm dan tinggi 10 cm. Pengujian kuat tekan dan kuat lentur beton mutu normal dengan tinggi beton serat 0; 0,25; 0,50; 0,75 dan 1 dilakukan setelah 14 dan 28 hari. Kuat tekan dan kuat lentur maksimal terjadi pada ketinggian beton serat 0,75. Kuat tekan maksimal sebesar 27,3649 MPa, meningkat sebesar 3,5714%. Kuat lentur maksimal sebesar 5,4880 MPa, meningkat sebesar 18,9475%. Penambahan serat baja seling tidak memberikan kontribusi yang besar dalam peningkatan kuat tekan, akan tetapi pada kuat tarik lentur. Serat baja seling pada penelitian ini mempunyai kuat tarik yang tinggi, yaitu 1733,46 MPa sehingga dapat memberikan peningkatan kuat lentur yang signifikan. Kata kunci : kuat tekan, kuat lentur, beton serat, serat baja seling.
Evaluasi Perancangan Balok Beton Bertulang dengan Menggunakan Metode Elemen Hingga alia, fazadina; bayzoni, bayzoni; purwanto, eddy
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 4 (2016): Edisi Desember 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i4.504

Abstract

Perancangan balok dilakukan sedemikian rupa agar tidak menimbulkan retak berlebihan pada penampang sewaktu mendukung beban kerja dan tegangan lebih lanjut tanpa mengalami keruntuhan.  Agar tidak terjadi keruntuhan tersebut, batang balok sebagai bagian dari sistem yang menahan lentur harus kuat untuk menahan tegangan tekan dan tarik pada balok tersebut.  Oleh karena itu dalam teknik sipil klasik, penyelesaian analisis tegangan struktur di pakai metode-metode seperti kemiringan lendutan (slope deflection) dan distribusi momen namun di teknik sipil modern ini terdapat metode baru yaitu metode elemen hingga dengan prinsip dikritisasi yang membagi suatu benda menjadi benda-benda yang berukuran lebih kecil agar lebih mudah pengelolaanya.Tujuan dari penelitian ini adalah untuk mendapatkan tegangan yang diterima balok beton bertulang dengan menggunakan metode elemen hingga sehingga bisa mendapatkan suatu evaluasi perancangan balok beton bertulang dengan membandingkan tegangan yang di terima antara menggunakan metode konvensional dengan metode elemen hingga. Dari perhitungan yang telah dilakukan menunjukkan bahwa nilai pembesaran defleksi arah y (vertikal) lebih besar dibandingkan dengan nilai pembesaran defleksi arah x (horizontal), hal ini terjadi karena pengaruh dari beban vertikal yang diberikan dan juga konfigurasi balok yang digunakan dari struktur yang simetris.  Tidak hanya itu dari hasil analisis tegangan pada tulangan dan pada beton di balok beton bertulang dengan menggunakan metode elemen hingga memiliki nilai yang lebih kecil bila dibandingkan dengan nilai fy dan  f’c pada metode konvensional.  Hal ini menunjukkan bahwa balok beton bertulang tersebut dapat menahan beban yang lebih besar dari pada nilai beban yang digunakan dalam perancangan balok bertulangan rangkap.Kata Kunci: Beton bertulang, Balok, Metode elemen hingga, Tegangan 
Perencanaan Pintu Pelimpah Bendungan Margatiga Kabupaten Lampung Timur Provinsi Lampung Susanti, Lidya; Purwanto, Eddy; Wahono, Endro Prasetyo
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.667

Abstract

AbstractSpillway has an important role for both operating rules as well as a safety structure, particularly during flood, of a dam. In Margatiga Dam, gated-spillways were designed in order to regulate discharge to downstream mainly for irrigation purpose. The Margatiga Dam, located in East Lampung Regency, is a rock fill type of dam with vertical core, formed from specific clay materials. The dam was designed to supply the Sragi’s irrigation area mostly located in East Lampung Regency, which has more than 80% of its citizen are farmers. The main objective of this research is to design gate leaf structure of the spillway, in the form of skin plates and beams that fulfill safety requirement of the structure. Design was performed for two conditions, which are during normal water level, and during the flood conditions. Based on those two conditions, the most extreme forces was selected as the basis of the structural design. The loads, which are used for design, consist of hydrostatic pressure, sediment pressure, dynamic pressure during the earthquake, and the hydrodynamic pressure. This research provide dimension of the gate leaf of the concerned spillway. Thickness of the steel plates is 13 mm, meanwhile the dimension of girder plates are 900x300 mm, 860x100 mm, and 900x150 mm, for the horizontal beams, vertical beams, and the edge of the beams respectively. Thickness of flense and web for all the beams are designed to be 13 mm and 5 mm respectively. Design of the gate provide maximum deflection of the beams for 10.06 mm and maximum deflection of the plates is 5.16 mm, which are considered to fulfill the safety requirement for the conditions during probable maximum discharge (QPMF).Keywords : spillway, gate leaf, QPMF, girder plate
PERBANDINGAN PENGARUH PENAMBAHAN SERAT BENDRAT LURUS (STRAIGHT) DENGAN SERAT BENDRAT BERKAIT (HOOKED) TERHADAP PERILAKU BETON DENGAN BEBAN TEKAN BERULANG Faizah, Poppy Nitiranda; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.735

Abstract

In this research, the concrete mixture is added by the material of straight and hooked wire bendrat fibers. This addition aimed to study and compare the effect of adding bendrat fiber straight and hooked to the compressive strength, tensile strength and flexural strength in normal quality concrete with 0.75% fiber concentration and aspect ratio 60 with repeated press load. The test specimen compressive and  tensile strength in the form of cylinders with a diameter of 15 cm and height 30 cm and the flexural strength test specimen in the form of beam with a length of 60 cm, width 15 cm and height 15 cm. Testing is done after 28 days. Concrete with additional hooked bendrat fiber is more able to withstand fatigue due to repeated load that generates more experienced loading intervals until concrete destroyed, the compressive strength at the 13th interval, 14th tensile and 6th flexural. The compressive strength, tensile and flexural maximum split value occurred in the concrete with the addition of hooked bendrat fiber. However, the value did not increase significantly between the variations of straight bendrat fiber with hooked bendrat fiber. The maximum compressive strength in the hooked bendrat fiber of 34.5189 MPa, tensile strength of 3.2067 MPa and flexural strength of 8.9380 MPa.______ Key words:   bendrat fiber, repeated press load, compressive strength, tensile strength, flexural strength.
Studi Eksperimental Pengujian Kuat Tekan, Kuat Tarik Belah dan Kuat Lentur pada Campuran Beton dengan Penambahan Serat Kawat Bendrat Berkait Zhafiira, Atika Ulima; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 4 (2017): Edisi Desember 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i4.760

Abstract

Abstrak Beton adalah bahan konstruksi yang paling banyak digunakan untuk bangunan sipil dikarenakan memiliki beberapa kelebihan. Kelemahan pada struktur beton yaitu mempunyai kuat tarik yang rendah dan bersifat getas (brittle) sehingga beton diberi tulangan baja sebagai bahan alternatifnya. Pada penelitian ini, campuran beton diberi bahan tambah serat bendrat berkait.  Penambahan ini dilakukan untuk mengetahui pengaruh serat bendrat berkait terhadap kuat tekan, tarik belah dan kuat lentur pada beton mutu normal dengan variasi kadar serat 0%, 0,75%, 1,0% dan 1,25% dengan panjang serat 60 mm dan diameter 1 mm. Benda uji kuat tekan dan tarik belah berupa silinder dengan diameter 15 cm dan tinggi 30 cm berjumlah 24 buah dan benda uji kuat lentur berupa balok dengan panjang 60 cm, lebar 15 cm dan tinggi 15 cm sebanyak 12 buah. Pengujian dilakukan setelah 28 hari. Kuat tekan, tarik belah dan kuat lentur pada beton meningkat setelah diberi penambahan serat kawat bendrat berkait. Peningkatan optimum terjadi pada variasi kadar serat 0,75% dengan hasil berturut-turut sebesar 35,9336 MPa, 3,9848 MPa, dan 8,9380 MPa. Semakin banyak variasi kadar serat akan menyebabkan sulitnya pergerakan agregat sehingga semakin besar kemungkinan terjadi balling effect pada saat pengerjaan beton. Kata kunci : kawat bendrat, kuat tekan, tarik belah, kuat lentur.
Analisis Dinamik Struktur Bangunan Gedung Yang Menggunakan Sistem Seismic Isolation Lead Rubber Bearing Dwiyanto, Efri; Bayzoni, Bayzoni; Purwanto, Eddy
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 4 (2017): Edisi Desember 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i4.780

Abstract

ndonesia is an archipelagic country that passes seismic path, so that earthquakes often occur. Earth vibrations caused by an earthquake, can vibrate the structure on it and cause deformation that can damage the structural building. One effort to reduce the damage is by using seismic isolation system. This system will separate the structure of the horizontal components of ground movement by inserting the base isolator. This study was conducted to examine the effect of using base isolator (lead rubber bearing) when compared with the building without using base isolator on the medium soil and soft soil. Interstory drift is calculated using the response spectrum method by manual and Software SAP2000. Results of the analysis showed that the use of base isolator increase the natural period of the structure so that it can decrease the interstory drift in the building. The maximum interstory drift at fix base and base isolation is 4,3335 mm and 0,5741 mm on medium soil, 6,8606 mm and 0,9139 mm in soft soil, respectively. The reduction of interstory drift in both soil type reached 91%. Keywords: Interstory drift, seismic isolation, lead rubber bearing, response spectrum, SAP2000.
Desain Sambungan Menggunakan Link Slab Untuk Jembatan Gelagar Beton Pratekan Lestari, Tika Ayu Triana; Sebayang, Surya; Purwanto, Eddy
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 2 (2018): Edisi Juni 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i2.837

Abstract

In Indonesia, bridges normally use a simply-supported system or a multisimple-span system withexpansion joint. Several problem occurred due to the use of expansion joints in bridge, iecorrosion problem on girders and supports due to rainwater intrusion, users discomfort, high costmaintenance, as well as reduction in bridge lifetime as well. In the design, the existing expansionjoints in the bridges were replaced by using continuous slab construction with link slab system.Design of link slab use classic method by Caner and Zia 1998. The design was conducted on theprestress bridges with length of span 2 x 50 m. The loadings adopted for the design referred to the1725 2016 SNI standard and dimension of girder from WIKA Beton standard. From design werefound that length of link slab zone of 7,55 m and length of debonding zone of 5,05 m. The rotationgained by 0,0058 caused by the truck load. The link slab used reinforcment stool bar D16-125 mmfor the main reinforcement and D12-300 mm for shrinkage-temperature reinforcement. It isexpected that link slab analysis can then use more variable beam types and span lengths.Keyword: Prestress bridge, Link Slab, Expansion Joint
Co-Authors alia, fazadina Amanda, Oktary Putri Bagus, Krisna Bayzoni Bayzoni, Bayzoni bimantara, bagus Dwiyanto, Efri Endro Prasetyo Wahono Faizah, Poppy Nitiranda Fikri Alami Hasti Riakara Husni Laksmi Irianti Lestari, Tika Ayu Triana Lidya Susanti Majid, Audy Nadyaputri Marvin, Tiffany Muhammad Fahri, Muhammad Muzakir, Bayzoni Putri, Farida Rahma Hadi Sanjaya, Fajar Putra Surya Sebayang Suyadi Suyadi Yumna Cici Olyvia, Yumna Cici Zhafiira, Atika Ulima