Jurnal Rekayasa Sipil dan Desain
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Studi Kinerja Pelat dan Balok Beton Bertulang di Gedung E Fakultas Teknik Universitas Lampung Akibat Getaran
Get PDFIn General, the plate of building will restrain the live load from various activities on it. Furthermore, this live load may produce structural vibrations which cause the inconvenient condition for the users. The study aims to evaluate the vibrations of the plate based on testing on fieldand numerical analysis using SAP2000 Software. The analysis calcutionsaccording to ISO 2631-2 : 2003 and steel design guide 11th series floor vibrations due to human activity The measurement on field shows that the compression strength of reinforced concrete for the plate and beams are between K-350 and K-400 which means both of them are medium quality concrete in addition. Thefrequencies of plate are between 12,94 - 23,29 Hz with the acceleration rates of 0,235 - 1,13 m/s². The numerical analysis results that the frequences of plate in 8,05 Hz and 8,13 Hz frequences due to walking load with the accelerations under 0,5% g. Based on both of analysis is concluded that the plate E building is a rigid structure. Keywords: Beam, Plate, Vibrations and Acceleration
Kajian Permasalahan Getaran pada Pelat dan Balok Beton Bertulang di Gedung E Fakultas Teknik Universitas Lampung
Get PDFThe planning of a building has some criterias that need detailed attention which are the stiffness, strength, stability, flexibility and economical aspect. This result focus for building planner which is need the experimental method that use tools such as hammer test, Ultrasonic Pulse Velocity (UPV) and accelerator. Hence, the numerical method used SAP 2000 v.14.14.0.0. This result the frequency of the building was 1,953 Hz and the acceleration was 0,263 m/s2. Based on the SAP 2000 v.14.14.0.0 calculation, the building frequency was 7,078142 Hz and the acceleration was 0,001005 m/s2. The different results between those two methods were caused by unsatisfying building quality that caused the difference of result between those two methods. The building frequency fitted the specification attached on ISO 2631-2: 2003 but the acceleration was bigger 0,5% than the gravitation. The adding of BJ 37 IWF 350 mm x 175 mm could enhance the vibration frequency from 7,078142-7,3351 Hz as many as 3,630% and the acceleration from 0,001005-0,0009177 m/s2 as many as 8,6865%.Key words: Beam, Plate, Vibration, Frequency, Acceleration
Techincal Planning Of Strategical Bridge in Way Umpu Way Kanan Regency
No full textThe Way Umpu Bridge is located in Blambangan Umpu District, Way Kanan Regency which ispart of the Trans-Central Sumatra road section. In the structural elements of the bridge damageoccurs in the structural elements on the bridge so that it can endanger road and bridge users.Therefore effective and efficient planning is needed for the design of the new bridge.Standards used as a reference in planning the Way Umpu Bridge are SNI 1725-2016, RSNI T-02-2005 and PUPR PERMEN NUMBER 28 / PRT / M / 2016. By using supporting software for thecalculation and design of AutoCAD 2017, Microsoft Excel 2013, Google Earth Pro and SAP 2000V 14.The results of this plan are (1) effective type of bridge top structure is a class A bridge framestructure with a span length of 60 m, (2) the type of effective lower structure used is a supportedT-type support and the foundation of the pre-cast concrete piles ( rotating) pile), and (3) totalconstruction costs provided by labor costs, supply of materials and equipment, heavy equipmentoperating and rental costs and taxes of Rp 16,644,725,377
Kinerja Kuat Geser Interface Beton Lama (Substrate) Dan Beton Baru (Overlay) Dengan Variasi Sudut Kemiringan Dan Volume Fraksi Serat Baja
Get PDFDalam suatu pekerjaan struktur seringkali dijumpai pekerjaan perbaikan atau perkuatan struktur beton. Permasalahan yang sering muncul pada pekerjaan perbaikan atau perkuatan struktur terletak pada lekatan antara beton lama dan baru, dimana pertemuan (interface) merupakan bagian terlemah dari struktur. Penelitian ini bertujuan untuk mengetahui kinerja kuat geser lekatan interface antara beton lama (substrate) dengan beton baru (overlay) dengan variasi sudut kemiringan dan volume fraksi serat baja pada beton baru. Metode yang digunakan adalah metode Slant Shear Test, dengan menggunakan benda uji berbentuk prisma dengan dimensi 150 x 150 x 300 mm. Terdapat 2 variasi yang digunakan yaitu, (1) variasi sudut kemiringan 30°,45°, dan 70°dan (2) variasi campuran serat baja pada lapis overlay sebesar 0%, 0,5%, 1% dan 1,5%. Pada setiap variasi dibuat benda uji kuat tekan (kubus 150 x 150 x 150) dan kuat tarik lentur (balok 100 x 100 x 400). Dari hasil penelitian dapat disimpulkan bahwa 1) Kemiringan interface antara beton lama dan beton baru terhadap arah beban tekan mempengaruhi kuat geser lekatan antara beton lama dan beton baru, 2) Penambahan serat baja dalam beton overlay dapat meningkatkan kuat lekatan antara beton lama-baru dan kuat tarik lentur beton. Kata kunci : kuat geser, interface, substrate, overlay, kuat tarik lentur
Desain Struktur Utama Suspension Building Menggunakan Balok Pelat Berdinding Penuh (Pelat Girder)
Get PDFAbstractPlate girder is a flexible structural component that composed from several plate elements. Basically, plate girder is a beam with a large cross-sectional size and a long span. Plate girder is an alternative if the largest hot rolled steel profile is insufficient to carry the working load due to its long span.This research will plan the main structure, that is girder plate for a multi-storey building with a hanging system (suspension building), and also plan the complementary components. Generally, the implementation steps of the process are collecting planning data, calculating loading, calculating the forces those worked on the structure using SAP2000, after that, designing the girder plate profile, and other components such as joint design and stiffener design, so that safe structural details are obtained.In the design that has been done, the column dimensions are obtained (h = 1500, bf = 500, tw = 8, tf = 30) mm, beam (h = 1500, bf = 450, tw = 8, tf = 30) mm, transverse stiffener ( bp = 120, tp = 8, h = 1440) mm, column-beam joints (Db = 24mm, n1 = 36 bh, n2 = 78 bh), beam-beam joints (Db = 24mm, n1 = 32 bh, n2 = 70 bh), splice joints (Db = 24mm, n1 = 26 bh, n2 = 16 bh), and base plate connections (Db = 24mm, n1 = 10 bh). Based on the design, the profile and components are quite safe to use.Keywords : Girder Plate Beam, Steel Structure, Building Structure Design, Suspension Building.
Uji Kepadatan Tanah Timbunan Pilihan Untuk Inti Bendung Terhadap Nilai Permeabilitas
Get PDFThe development of infrastructure development in Indonesia is increasing in various areas, such as the construction of reservoirs, reservoirs, dams and other constuctions. One of the important things that is the basis of development is land because almost all buildings stand on the ground. Therefore, it is necessary to know the type of soil used and the nature of the soil permeability. Soil permeability describes the ability of the soil to pass water. Soil samples used were soil samples from Pamenang village, Pagelaran sub-district, Pringsewu district. Soil samples taken are disturbed and undisturbed soil samples. The soil is then compacted by the standard method and with the pressure method test apparatus at a pressure of 2,5 MPa, 5 MPa, 7,5 MPa, 10 MPa, 15 MPa, 20 MPa, and 30 MPa, each method has one sample being tested. Furthermore the permeability test was carried out to obtain the permeability coefficient value.Results from observations in the laboratory show that the greater the pressure exerted on the soil, the smaller the permeability coefficient. The relationship between the permeability coefficient and the standard compaction method and the pressure method obtained different permeability coefficient values.Keyword : Soil, Compaction, Pressure and Permeabilit
Gap Acceptance Review Of Traffic Conflic In The Road Of Raden Ajeng Kartini.
No full textThe behavior of drivers who do not consider the movements of other drivers can cause traffic problems, such as congestion and traffic accidents that can occur on the road. The stagger intersection at Jalan Raden Ajeng Kartini is often crowded with vehicles that can cause congestion. This is due to the behavior of drivers crossing from Cut Nyak Dien road to Lindu road, causing a conflict of delays influenced by weaving movements. The purpose of this research is to analyze the amount of delay due to weaving motion on the Raden Ajeng Kartini road.This study uses an analysis of the gap acceptance approach, to get the big results of vehicle delays caused by weaving motion, the average gap time and critical gap.The results of this study show that the vehicle delay caused by weaving motion is 3.20 seconds and 8.93 seconds in the morning and evening. The average gap time was 82.50 seconds in the morning and 94.36 seconds in the afternoon, while the critical gap was 4.34 seconds in the morning and 3.88 seconds in the afternoon. Keywords: Gap Acceptance, Weaving, Delay
Feasibility Study of Flyover Project on R.A. Basyid Street – Untung Suropati Reviewed in Terms of Traffic and Economic Engineering
No full textAbstractTraffic jam is a problem that always exists as an area develops, especially at the Untung Suropati intersection in Bandarlampung City. To solve the problem, a fly over is built and a feasibility study is needed.Feasibility studies conducted are reviewed in terms of traffic performance using pkji method. In terms of economy, it is reviewed from BCR and NPV parameters by analyzing saving of vehicle operating costs variables and Vehicle Travel Time Value.With the development, the degree of saturation for the direction of Labuhan Dalam – Labuhan Ratu decreased from 0.57 to 0.32, for the direction of Labuhan Ratu – Labuhan Dalam reduced from 0.66 to 0.32, for way Halim – Rajabasa reduced from 0.80 to 0.41 and for rajabasa direction – Way Halim reduced from 0.82 to 0.46 so it is said to be feasible in terms of traffic performance. In terms of economy obtained bcr value is 10,059 and NPV is Rp 398,062,846,073.96. So in terms of economics it is said to be feasible.Keywords: Feasibility, Flyover, Traffic ja
Pengaruh Suhu Pemeraman terhadap Kinerja Fly Ash untuk Tanah Lempung Lunak
Get PDFOne of the construction problems that is often encountered in the world, including Indonesia, is the construction of highways carried out on soft soil subgrade. In general, the improvement of soft subgrade is carried out with special modifications or handling, one of which is by stabilization so the subgrade can be used based on the standards. The use of fly ash as a stabilization material is considered an effective option because of its economical price and the elements in it have the ability to harden and increase strength when reacting with water. This study aims to find out the improvement of soft soil quality that has been mixed with several variations of fly ash seen from parameters such as Atterberg Limits and CBR. By reviewing the highest temperature conditions that ever happened in Indonesia based on Badan Meteorologi dan Geofisika (BMKG) and relating it with temperature conditions in the field, the study also reviewed the influence of high temperatures of 40°C on these parameters. The results are a decrease in the maximum dry density and an increase in the optimum moisture content. In addition, the value of the Atterberg Limit decreased significantly. The largest CBR value is shown in the addition rate of fly ash by 10% with a 7-day curing time at a temperature >40°C.Keywords: soft soil, soil stabilization, fly ash, high curing temperature, CB
An Evaluation of Shuttle Bus Operating Pattern at University of Lampung
No full textThis study was conducted to determine and analyze the operationalperformance of shuttle bus services within the campus, namely at theUniversity of Lampung. The data used in this study is primary data inthe form of data on the number of passengers, data up and downpassengers, and data on travel mileage.The primary data is then processed and produces data on load factor,headway time, cycle time, travel speed and frequency of shuttle busservices. To make it easier for the reader, the data is then entered intothe form of tables and graphs. From the graph results can be seen thecorrelation between the speed and distance of the service.Based on these results, it can be concluded that the average loadfactor value is 41.49%, the average cycle time is 15.6 minutes, theaverage headway is 6.125 minutes, and the service frequency is 8buses/hour.Keywords: time headway, load factor, campus bus, shuttle bus, speed,cycle time