Jurnal Rekayasa Sipil dan Desain
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Evaluasi Kekuatan Struktur Gedung Bertingkat Akibat Pengaruh Beban Gempa Menggunakan Analisis Dinamik Respon Spektrum (Studi Kasus: Gedung B Rumah Sakit Umum Muhammadyah Metro)
Get PDFAbstractIndonesia is an area with a high level of earthquake vulnerability. One of the efforts to anticipate these impacts is to meet the needs of earthquake-resistant buildings. In this case, it is necessary to carry out a comprehensive planning and evaluation of earthquake-resistant buildings by taking into account the lateral forces caused by earthquake loads in accordance with the latest regulations. This research takes a case study in Building B of the Muhammadiyah Metro General Hospital. In planning, the structure of the building still uses the old regulations, namely SNI 1726-2012, SNI 1727-2013, and SNI 2847-2013. Meanwhile, currently the latest planning standards have been implemented, namely SNI 1726-2019, SNI 1727-2020, and SNI 2847-2019, so it is necessary to evaluate the strength of the structure using the latest regulations. This study aims to compare the results of evaluating the strength of high-rise buildings due to the influence of earthquake loads and without earthquake loads using the dynamic response spectrum analysis method. Based on the results of the study, it was concluded that the building structure was not strong enough to withstand earthquake loads, and there was a significant difference between conditions without earthquake loads and with the influence of earthquake loads. Keywords: Response Spectrum Analysis, Earthquake Resistant Building, Evaluation of Structural Strength AbstrakIndonesia merupakan wilayah dengan tingkat kerawanan gempa yang tinggi. Salah satu upaya untuk mengantisipasi dampak tersebutadalahdengan memenuhi kebutuhan bangunan tahan gempa. Dalam hal ini perlu dilakukan perencanaan dan evaluasi yang menyeluruh terhadap bangunan tahan gempa dengan memperhitungkan gaya lateral yang diakibatkan oleh beban gempa sesuai dengan peraturan terbaru.Penelitian ini mengambil studi kasus pada Gedung B Rumah Sakit Umum Muhammadyah Metro. Dalam perencanaannya, struktur gedung tersebut masih menggunakan peraturan lama yaitu SNI 1726-2012, SNI 1727-2013, dan SNI 2847-2013. Sedangkan untuk saat ini telah diberlakukan standar perencanaan terbaru yaitu SNI 1726-2019, SNI 1727-2020, dan SNI 2847-2019, sehingga perlu dilakukan evaluasi kekuatan struktur dengan menggunakan peraturan terbaru tersebut.Penelitian ini bertujuan untuk mengetahui perbandingan hasil evaluasi kekuatan struktur gedung bertingkat akibat pengaruh beban gempa dan tanpa beban gempa menggunakan metode analisis dinamik respon spektrum. Berdasarkan hasil penelitiandisimpulkan bahwa struktur gedung tidak cukup kuat untuk menahan beban gempa, dan terdapat perbedaan yang signifikan antara kondisi tanpa beban gempa dan dengan pengaruh beban gempa. Kata Kunci : Analisis Respon Spektrum, Bangunan Tahan Gempa, Evaluasi Kekuatan Struktu
Analisis Desain Geometrik Fly Over Pramuka - Indra Bangsawan
Get PDFAs the capital city of Lampung Province, traffic density in Bandar Lampung City cannot be avoided. Due to the density of existing traffic flow, transportation facilities need to be improved. Transportation facilities improve can be done with many examples of traffic engineering, like make an intersections, roundabout, underpasses, flyovers, etc. In the Pramuka traffic area, the government took the decision to make a fly over. The construction of fly over Pramuka – Indra Bangsawan impressed not pay attention to the applicable geometric standard of urban roads, so it needs to be evaluated to find out the safe speed to cross on it. The research method is by first searching for the ideal radius length after that searching for the ideal arch length which will be compared with the existing arch length. The result, a safe passing speed when crossing the fly over is 18 km / h (full circle) and 16 km / h (spiral-spiral), and at the cross over fly over is 12 km / h (full circle) and 8 km / h (spiral-spiral). Speed requirements for urban road plans are 30 - 50 km / h, so it can be concluded that the construction of fly-over pramuka - indra bangsawan has not met the applicable urban road planning standards
Pengaruh Serat Kulit Kayu Gelam Terhadap Kuat Tarik Lentur Beton Menggunakan Semen OPC
Get PDFThe load from vehicles received by rigid pavement is characterized as dynamic load that move and change quantitively, so the r2eaction accepted by rigid pavement is the combination of compressive and tensile strength. In the reaserch, as the effort to know the effect of flexural and split tensile strength on normal quality concrete with 0%, 0,4%, 0,6% and 0,8%. The samples of flexural tensile strength testimonial use 60 cm x 15cm x 15 cm beam and the sampes of split tensile and compressive strength test use 15 cm x 30 cm cylinder. As the result, the concrete sample with 0,4% of volume fraction has the most significant progress in the flexural tensile strength, split tensile strength and compressive strength. The result of this research also shows that the progress of flexural tensile test sample reach 9,42%, split tensile strength 7,5% and compressive strength 6,12% from concrete sample with 0% of volume fraction and it has decreased test result from 0,6% and 0,8% of volume fraction. The maximum of flexural tensile test, split tensile test, and compressive test are 6,62 MPa, 2,58 MPa, and 30,54 MPa. Key words : Melaleuca bark fiber, flexural tensil strength,split tensil strength, compressive strength, volume fraction, and rigid pavement
Analisis struktur atas jembatan kereta api jalur tunggal pc i girder bentang 35 meter way pengubuan
Get PDFBeton prategang merupakan jenis beton dengan tulangan baja ditarik dan menghasilkan sistem kesetimbangan pada tegangan dalam tarik pada baja dan tekan pada beton yang dapat meningkatkan kemampuan beton menahan beban luar. Terdapat beragam bentuk profil gelagar beton prategang antara lain box girder, profil U, dan profil I. Pada analisis struktur atas jembatan ini digunakan gelagar profil I atau disebut juga PC I girder. Tujuan dari penelitian ini adalah menganalisis struktur atas jembatan dengan gelagar profil I, menghitung dan melakukan kontrol keamanan terhadap besar lendutan, geser, tegangan serta momen ultimit.Berdasarkan analisis struktur atas jembatan diperoleh dimensi PC I girder dengan tinggi 2,17 m, lebar bidang bawah 0,75 m, lebar bidang atas 0,5 m, dan lebar bidang badan 0,25 m. Pada perhitungan gaya prategang didapatkan gaya prategang awal sebesar 13513,98 kN, gaya prategang saat jacking sebesar 15898,8 kN, dan total kehilangan gaya prategang sebesar 4291,811 kN atau sebesar 27%, sehingga diperoleh nilai gaya prategang efektif sebesar 11606,99 kN. Dan pada perhitungan momen ultimit dinyatakan aman karena diperoleh kapasitas momen ultimit pada balok prategang sebesar 21047,65905 kNm yang nilai nya lebih besar dari momen ultimit terbesar dari hasil kombinasi yaitu sebesar 13764,95 kNm.Kata Kunci : Struktur Atas Jembatan, PC I Girder, Beton Prategan
Analisis Stabilitas Lereng Dengan Variasi Lapisan Tanah Berbeda Yang Di Pengaruhi Nilai Kohesi Tanah
Get PDFNatural disasters often occur in hilly areas in Lampung Province, namely landslides. Slides thatoccur due to increased soil pore water pressure. The GeoStudio SLOPE / W 2012 program cananalyze slope stability which can be modeled according to the original conditions in the field andcan determine the value of the slope safety factor. In this study, there are four cross sections ofslopes with four different layers with an angle of 30 ° each, and following a maximum height of 18meters.The results of the analysis of the GeoStudio Slope / W 2012 program using 4 methods of analysis,namely Ordinary, Bishop, Janbu and Morgenstern Price, obtained different safe factor values, theMorgenstern Price method and the Bishop method have a safe factor value that tends to be thesame and greater than the Ordinary method and the method. Janbu tends to have a smaller safetyfactor.The shape of the cross section of the slope in the 5 soil layers is the most safe factor, different soillayers, it can be seen that each layer of soil has different safety factors but does not differ muchfrom the others
Analisis Nilai Waktu Kendaraan Pribadi (Mobil dan Motor) Di Kota Bandar Lampung Dengan Metode Regresi Linear (Studi Kasus : Jalan Kartini)
Get PDFThe value of travel time is the amount of money a person can spend to save a unit of travel time. Loss of travel time is a form of losses in terms of cost and time experienced by road users. This research is conducted at Kartini Street, Bandar Lampung. The purpose of this study is to obtain the value of travel time for car and motorbike users using the linear regression method processed with SPSS. The dependent variable is the cost per length of trip. The independent variables are the lengths, the costs, and the distance of the trip, as well as the socio-economic data of the respondents, namely gender, age, occupation and income. Based on the results of the processing, it is found that the independent variables that have a significant effect on the value of travel time at the research location are age, income, travel time and travel costs. By distributing the mode value of the survey data into the regression equation, the value of travel time on Kartini street for private car drivers is Rp. 25,452.24 / hour and for motorbike riders is Rp. 14,527.26 / hour. Keywords: travel time value, private vehicle, linear regressio
Perbandingan antara Campuran Pasir Baik dengan Pasir Buruk pada Perbaikan Tanah Dasar Jalan Terhadap Daya Dukung Setelah Dilakukan dan Tidak Dilakukannya Swelling Potential Ditinjau Terhadap Tebal Perkerasan Jalan
Get PDFSwelling of clay soil has an impact on building construction. The problem that occurs in Marga Kaya Village, in the rainy season the soil is mushy and the carrying capacity becomes low so that the road is bumpy and the road body decreases. This study uses good sand stabilization material and bad sand with a mixture variation of 5%, 10% and 15% This study aims to find out the thick decrease in road pavement from each addition of mixed variations. Cbr results unsoaked and soaked maximum good sand occurs in a mixture of sand 15% with a value of 14.2% and 3.2%. The thickness of pavement on CBR unsoaked and soaked sand is well efficient on a mixture of sand 15% with a thickness of D1 = 2.25 cm, D2 = 20 cm and D3 = 10 cm, and soaked D1 = 8.75 cm, D2 = 20 cm and D3 = 10cm. Cbr unsoaked and soaked maximum value of bad sand occurs in 15% sand mixture with values of 13.9% and 2.6%. Thickness of pavement on CBR unsoaked and soaked bad sand maximum on the sand mixture 15% with thickness D1 = 2.5 cm, D2 = 20 cm and D3 = 10 cm, and soaked with thickness D1 = 9.25 cm, D2 = 20 cm and D3 = 10 cm. The value of swelling decreased from 11.4% to 5.7% and 8% in the addition of sand 15%
The effect of El Nino and La nina on the rain data of Lampung Barat Regency, Lampung Province
No full textThe purpose of this research to analyze and determine dominant impact area due to the effect of El Nino and La Nina on 6 rainfall station in west Lampung Regency, Lampung Province. This study also compred between Fast Fourier Transform (FFT) methods, and Lomb Periodogram methods. This study using rainfall data from 1998 to 2019 taken from Balai Besar Wilayah Sungai Mesuji – Sekampung (BBWSMS). According on comparison result, it is known that both methods indicate that Air Hitam Rainfall Station experience the effect of El Nino and La Nina more dominantly than the others, with the looping period of 3,9165 years from Lomb Periodogram method and 3,7381 years from (FFT) Method. It is also known that Lomb Periodogram Method has a better accuracy than (FFT) method. This is because Lomb Periodogram can read the length of data more accurately than Fast Fourier Transform (FFT) method. Keywords: El Nino, La Nina, rain station, rainfall, Fast Fourier Transform, Lomb Periodogra
Pengaruh Kegiatan Samping Jalan Terhadap Kecelakaan Lalu Lintas (Studi Kasus Ruas Jalan By Pass Soekarno-Hatta Bandar Lampung)
Get PDFTraffic accidents are serious problem in Bandar Lampung City, especially the Soekarno-Hatta Bandar Lampung By Pass Road, considering that this road is the primary arterial road that should not be disturbed by shuttle traffic, local traffic, and local activities. Roadside activities are one of the disruptions that can cause accidents and need to be analyzed. Blackspot are determined by the Equivalent Accident Number (EAN) method based on accident fatality rate each segment of the road. Roadside activities are grouped into pedestrians and crossers (PED), park and stop vehicles on the side of the road (PSV), slow moving vehicles (SMV), also enter and exit vehicles of activity centers (EEV). Analysis with linear regression is used to calculate the level of impact of roadside activities with accident rates. From 25 segments along Soekarno-Hatta Road, 16 segments are classified as blackspot and 6 segments are still classified as blackspot until 2017. EEV is the highest number that affects the decrease in the number of accidents, PSV for the 2nd number, SV for the 3rd number and PED for the smallest number. Besides the average vehicle speed is only 42,8 km/h due to the high volume of vehicles with an average of 2708 skr/h also the damaged of some segments and poor support facilities of the road
Perbandingan Intensitas Curah Hujan Menggunakan Data Badan Meteorologi Klimatologi dan Geofisika (BMKG) dan Satelit Tropical Rainfall Measuring Missions (TRMM) di West Java
Get PDFDalam penelitian ini data curah hujan diambil dari beberapa stasiun hujan BMKG dan TRMM yaitu Stasiun Bogor, Stasiun Tangerang Selatan, Stasiun Kemayoran.Tujuan penelitian ini adalah seberapa besar nilai korelasi data curah hujan BMKG dengan TRMM, hasil analisis perbandingan parameter statistik dari data curah hujan BMKG dan TRMM, dan bentuk persamaan hubungan antara data curah hujan BMKG dengan TRMM. Nilai korelasi yang paling terbesar pada data bulanan adalah 0,7359 dengan persamaan linier nya adalah y 1,0427x–41,629 yang dimana terletak pada di stasiun Kemayoran. analisa parameter statistik yang dilakukan dapat diketahui bahwa mean dan simpangan baku data BMKG lebih besar dibandingkan dengan data TRMM. Dikarenakan bahwa adanya data yang kosong dan pola grafik nya memiliki kesamaan.Perlu adanya pengkajian lokasi yang lebih banyak dan panjang untuk dapat melihat kemungkinan data TRMM mampu mengisi dalam data yang kosong. Perlu adanya dilakukan pengamatan secara detail, seperti ketinggian tempat pengukuran curah hujan dan pengaruh arah angin pada temporal Precipitation Radar TRMM