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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Proceedings ACES (Annual Civil Engineering Seminar)
Hendra Jingga, Hendra
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Civil Engineering, Building, Construction & Architecture Engineering

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EVALUASI DAYA DUKUNG TIANG PANCANG BERDASARKAN METODE DINAMIK Maizir, Harnedi; Jingga, Hendra; Toni, Nopember
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Pengujian tiang dinamik merupakan salah satu metode pengujian untuk mengevaluasi dayadukung tiang. Pengujian tiang metode dinamik (Pile Driving Analyzer/PDA) dilaksanakandengan memasang sensor sepanjang tiang untuk merekam parameter kecepatan dan gaya saattiang dipukul menggunakan palu dengan besaran energi tertentu. Pada penelitian ini, data ujiPDA untuk tiang pancang beton pracetak pada proyek pembangunan gedung Rumah SakitUniversitas Riau digunakan untuk dianalisis daya dukungnya. Metode yang digunakan untukmenganalisis daya dukung tiang adalah perhitungan manual Metode CASE, hasil keluaran ujiPDA, dan hasil keluaran software CAPWAP. Nilai daya dukung yang dihasilkan ketiga metodetersebut kemudian dibandingkan dan dievaluasi. Berdasarkan hasil analisis, nilai daya dukungyang diperoleh dari perhitungan manual Metode CASE adalah 98,8 ton, hasil keluaran uji PDAsebesar 98 ton, dan hasil keluaran software CAPWAP sebesar 98,3 ton. Hal ini menunjukkanbahwa ketiga metode tersebut menghasilkan daya dukung tiang yang relatif sama denganselisih kurang dari 1%. Oleh karena itu, ketiga metode tersebut dapat digunakan untukmenganalisis daya dukung tiang dengan tingkat keandalan yang baik.Kata kunci: CAPWAP, Metode CASE, Pengujian Dinamik, Pile Driving Analyzer (PDA).
RESPONS STRUKTUR BANGUNAN BERDASARKAN SPEKTRA GEMPA INDONESIA UNTUK IBUKOTA PROVINSI DI PULAU SUMATERA Jingga, Hendra; Suryanita, Reni; Yuniarto, Enno
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Sumatera Island is a very active seismic area in Indonesia, which is crossed by the infamousPacific Ring of Fire. The western side of Sumatera Island suffers more from the groundshaking due to its closer distance to the epicenter. Combined with huge coverage of soft soil,building structures built on this island may experience excessive deformation and eventuallycollapse in a brittle way. For high-rise reinforced concrete (RC) building, the impact is evenmore devastating and may endanger its occupants. Due to these facts, this study aims toanalyze the deformation characteristic (story-drift) of high-rise RC building under earthquakeloading in Sumatera Island. Modal response spectrum analysis is performed to compute themaximum story-drift of three RC building models (10 story, 15 story, and 20 story) used in thisstudy. The seismic acceleration response spectrum function is derived from the lastestIndonesia’s Seismic Hazard Map (2010) and SNI 1726-2012. Eight capital cities in SumateraIsland and three soil conditions (soft, medium, and hard soil) are selected to generate 24seismic acceleration response spectrum functions. Combined with three RC building modelvariations, 72 story-drift data are obtained for each X and Y horizontal direction. Based on theanalysis result, taller buildings in soft soil condition are at greater risk to experience excessivedeformation due to seismic loading. Seismic locations in the western side of Sumatera Island isalso observed to exhibit higher seismic hazard compared to central and eastern side ofSumatera Island.Keywords: artificial neural network (ANN), earthquake, modal response spectrum analysis,structural response, Sumatera Island
Prediksi Respons Struktur Bangunan Berdasarkan Spektra Gempa Indonesia Di Pulau Sumatera Menggunakan Jaringan Saraf Tiruan Jingga, Hendra; Suryanita, Reni; Yuniarto, Enno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sumatera Island is one of the most active seismic area in Indonesia. The high seismic acvitity combined with mostly soft soil condition turn some location in this island into a devastating shaking area especially for highrise building. If not well designed, highrise reinforced concrete (RC) building may experience excessive deformation and endanger its occupants.Due to these facts, this study aims to predict deformation characteristics of highrise RC building under earthquake loading using artificial neural network (ANN). Prior to ANNanalysis, modal response spectrum analysis is conducted to produce building response data sets. By selecting 8 capital cities and 3 other cities in Sumatera Island as seismic location,1080 data sets are generated for ANN training and 405 data sets for testing. The ANN analysis uses 3 layers: input layer, hidden layer, and output layer. Building geometry, soilcondition, and seismic load are selected as input parameters, while story-drift, velocity, and acceleration are selected as output parameters. After 6000 iterations at training process,average mean-squared errors (MSE) of 3x10-4 and 4x10-4 are achieved for training and testing process, respectively. The calculated R2 is ranging from 83% to 95% which isadequately high for prediction rate. This shows that ANN is a very promising tool to predict story-drift, velocity, and acceleration of highrise RC building under earthquake loading.Keywords: artificial neural network (ANN), Sumatera Island, modal response spectrum analysis, structural response
Co-Authors Enno Yuniarto Harnedi Maizir Nopember Toni, Nopember Reni Suryanita