18 research outputs found
Respon Model Gedung Beton Bertulang dengan Penambahan Dinding Pengisi terhadap Beban Gempa
No full textEarthquake-resistant building structures designs usually are not considering the influence of non-structural walls. In fact, non-structural walls could give additional strength for building especially to help retaining seismic loads. The Influence of masonry walls on infill frame building structure model to the open frame model became the objective in this study. Spectrum response and time history are applied to both types of model to know and compare the behavior of those two samples. The observed building is an educational facility and located in an area prone to earthquakes. The parameters used in this research are based on natural periods, shear forces, and drift ratios. After performing linear analysis, the drift ratio on each floor of the building could be categorized as safe condition because it has not exceeded its limit. Structural models with masonry walls have larger stiffness than open frames. Moreover, the greater structure stiffness in the infill frame model is able to narrow the drifts that occur from the inter-story drift ratio to be smaller. Due to higher stiffness, the base shear results from structures with infill frame system models are also larger than structures modeled with open frames system
Hadis qudsi : firman Allah tabaraka wa ta'alla selain al-qur'an
No full textHadis Qudsi merupakan Sabda Rasulullah Saw, yang disandarkan kepada Allah, Beliau meriwayatkan dari Allah atau merupakan firman Allah yg diinformasikan kepada Nabi Muhammad SAW baik melalui Malaikat Jibril atau melalui ilham atau mimpi yg secara redaksional, susunan lafal dan kata-katanya serta 'uslub'(gaya)nya berasal dari Nabi SAW berdasarkan taufiq dari Allah SWT. Sedangkan isi dan substansinya dari Allah SWT Buku ini berisikan hadis-hadis qudsi yg meliputi akidah, ibadah dan akhlak dalam islam. Bersumber dari al-Kutub al-Tis'ah, sembilan kitab hadis, yaitu: Shahih Bukhari, Muslim, Al-Tirmidzi, an-Nasa'i, Abu Dawud, Ibnu Majah, Imam Ahmad, Imam Malik dan Ad-Darimiy
Perbandingan Analisis Two Way Slab With Beam dengan Flat Slab (Studi Kasus: Coal Yard PLTU Kalimantan Barat)
No full textFloor slab of coal yard as a storehouse was designed as two way slab with beam and flat slab in order to compare those two systems based on needs of materials and ease of implementation. The design process is based on the provision of SNI 03-2847-2002. Through the design results and analysis of material requirements can be concluded that the need for concrete material on a flat slab system is 2.1% greater than on the two way slab with beam. Meanwhile the steel material requirements for flat slab system is 9.7% greater than two way slab with beam. However, in term of ease of implementation, relatively flat plate systems are superior to the briquette plate system because the number of items of work a little mor
Asesmen Cepat Kerentanan Bangunan Sekolah Muhammadiyah Terhadap Gempabumi di Kecamatan Kasihan Bantul DIY
No full textSchool buildings are included as buildings with risk category IV (SNI 1726: 2012) because it is potentially causing multiple casualties if earthquakes occur during school hours. Therefore the readiness of school buildings to face the earthquakes should be prepared well. First of all, a rapid vulnerability assessment of the existing building under earthquake needs to be conducted. If the buildings are vulnerable then it should be followed by a strength check. This research objective is to assess the vulnerability of Muhammadiyah school buildings which are located in Kasihan sub-district of Bantul Regency, using Rapid Visual Screening FEMA 154-2002. There are 8 buildings, consist of elementary, middle school, and senior high school which are scattered in Tirtonirmolo, Tamantirto and Bangunjiwo, Kasihan, Bantul regency. According to FEMA 154-2002, the observation result finds that 4 schools indicated to have structure vulnerability under earthquake hazard so they need further analysis to know more detail about their strength. While the other 4 buildings do not need further analysis. The results of this study can be used as a recommendation for the Muhammadiyah Basic and Secondary Education Council (Majelis Pendidikan Dasar dan Menengah) to conduct more detailed testing for school buildings that are have vulnerabilites. In addition, this research method also can be extend to school buildings or non-school buildings in other areas.
Optimum buckling-restrained braces application to enhance seismic performance of RC frame with curtailed walls
No full textReinforced concrete (RC) frames are commonly built together with shear walls. In high seismicity regions, constructing shear walls along the frame’s height is proven ineffective. Thus, in numerous studies, using shear walls at a certain height is beneficial, and this kind of structure is popularly known as curtailed shear walls. However, the area above the curtailed walls could suffer significant deformation under high seismic load and upgrading the seismic performance in those upper parts is needed. In this study, the seismic performance of 2-dimension RC frame building with curtailed walls is improved by installing buckling-restrained braces (BRBs). The seismic response is performed through non-linear dynamic analysis using an open-licensed software, STERA_3D. To determine the ideal number and location of the BRBs above the curtailed walls, a classical genetic algorithm is exercised using Python language programming. The parameters involved in optimizations are inter-story drifts, the number of BRBs, and damage indices surround the frames. The result shows that the configuration of BRBs resulted from the optimization could reduce the excessive amount of displacement along the building height. Moreover, the genetic algorithm could give the fittest number and location of BRBs installation to upgrade the seismic response of RC frames with partial shear walls
Optimum buckling-restrained braces application to enhance seismic performance of RC frame with curtailed walls
No full textReinforced concrete (RC) frames are commonly built together with shear walls. In high seismicity regions, constructing shear walls along the frame’s height is proven ineffective. Thus, in numerous studies, using shear walls at a certain height is beneficial, and this kind of structure is popularly known as curtailed shear walls. However, the area above the curtailed walls could suffer significant deformation under high seismic load and upgrading the seismic performance in those upper parts is needed. In this study, the seismic performance of 2-dimension RC frame building with curtailed walls is improved by installing buckling-restrained braces (BRBs). The seismic response is performed through non-linear dynamic analysis using an open-licensed software, STERA_3D. To determine the ideal number and location of the BRBs above the curtailed walls, a classical genetic algorithm is exercised using Python language programming. The parameters involved in optimizations are inter-story drifts, the number of BRBs, and damage indices surround the frames. The result shows that the configuration of BRBs resulted from the optimization could reduce the excessive amount of displacement along the building height. Moreover, the genetic algorithm could give the fittest number and location of BRBs installation to upgrade the seismic response of RC frames with partial shear walls
Numerical static-load test and earthquake simulation of a cable stayed bridge
No full textA bridge is an essential component of transportation networks and plays a crucial role in the operation of infrastructure, so maintaining this structure to guarantee the regular operation of bridges in a healthy condition is needed. The establishment of a bridge model numerically is a critical step of the bridge evaluation because many cases of the bridge test can be done numerically. The generated results can then be verified and adjusted with the real or full-scale test. This research aims to establish a numerical model of a cable-stayed bridge and perform numerical bridge tests and earthquake simulations. The targeted bridge is located in Taiwan, and it consists of four spans with three pylons. Static load tests are performed using a truck load set applied at each mid-span. Bridge displacement due to the truckloads is the primary concern of the static load test. Besides, dynamic bridge simulation under earthquake excitation is also simulated. On 18 September 2022, a destructive earthquake of moment magnitude (Mw) 7.1 occurred in Taitung County, southeastern Taiwan. Some infrastructures like bridges and buildings were damaged and even collapsed due to this earthquake. The bridge is simulated using the earthquake history record of the earthquake. The bridge's dynamical system properties are first outputted to see the bridge's natural frequencies and mode shapes. Displacement and stress history responses due to the earthquake excitation at some critical points are also evaluated. The simulation results can be a reference for real bridge testing
Pengaruh upah minimum kabupaten dan inflasi serta pertumbuhan penduduk terhadap pengangguran
No full textTujuan dari penelitian ini adalah untuk menganalisis jumlah pengangguran yang ada di Kabupaten Kutai Kartanegara. Data bersifat kuantitatif yang bersumber dari dokumen tertulis maupun elektronik dan lembaga atau institusi. Penelitian ini menggunakan alat analisis regresi linier berganda dan diolah dengan menggunakan Program Statistical Product and Service Solution (SPSS 24). Hasil penelitian ini menunjukkan upah minimum kabupaten berpengaruh positif dan signifikan terhadap pengangguran di Kabupaten Kutai Kartanegara, inflasi tdak berpengaruh dan tidak signifikan terhadap pengangguran di Kabupaten Kutai Kartanegara, dan pertumbuhan penduduk berpengaruh positif dan signifikan terhadap pengangguran di Kabupaten Kutai Kartanegara
Numerical static-load test and earthquake simulation of a cable stayed bridge
No full textA bridge is an essential component of transportation networks and plays a crucial role in the operation of infrastructure, so maintaining this structure to guarantee the regular operation of bridges in a healthy condition is needed. The establishment of a bridge model numerically is a critical step of the bridge evaluation because many cases of the bridge test can be done numerically. The generated results can then be verified and adjusted with the real or full-scale test. This research aims to establish a numerical model of a cable-stayed bridge and perform numerical bridge tests and earthquake simulations. The targeted bridge is located in Taiwan, and it consists of four spans with three pylons. Static load tests are performed using a truck load set applied at each mid-span. Bridge displacement due to the truckloads is the primary concern of the static load test. Besides, dynamic bridge simulation under earthquake excitation is also simulated. On 18 September 2022, a destructive earthquake of moment magnitude (Mw) 7.1 occurred in Taitung County, southeastern Taiwan. Some infrastructures like bridges and buildings were damaged and even collapsed due to this earthquake. The bridge is simulated using the earthquake history record of the earthquake. The bridge's dynamical system properties are first outputted to see the bridge's natural frequencies and mode shapes. Displacement and stress history responses due to the earthquake excitation at some critical points are also evaluated. The simulation results can be a reference for real bridge testing
Analisa Kerentanan Hunian Tetap di Kabupaten Cianjur dengan Evaluasi Probabilitas Percepatan Gerakan Tanah
No full textIndonesia is one of the countries that has a fairly high seismic condition. This is because Indonesia is passed by the Pacific Ring of Fire, which brings together many world plates, so it is natural that many earthquakes occur in Indonesia. With a fairly high seismic condition, there is a need for vigilance and actions taken to overcome the situation. The infrastructure sector becomes an important spotlight when an earthquake occurs because casualties are often caused by structural failures that are not strong enough to withstand the earthquake load. This is similar to what happened in the earthquake in Cianjur in 2022, which claimed many lives due to the numerous structural failures in permanent residences. Therefore, this research was conducted to evaluate the permanent residences of the community related to the vulnerability that occurred due to the earthquake. Building vulnerability testing is carried out using the Incremental Dynamic Analysis (IDA) method with data from 11 earthquake records. Later, the building’s response to the earthquake load will be obtained, and the probability of damage seen from the vulnerability curve will be known. The five performance levels of the building are Operational Phase (OP), Immediate Occupancy (IO), Damage Control (DC), Life Safety (LS), and Collapse Prevention (CP).Indonesia menjadi salah satu negara yang memiliki kondisi seismik yang cukup tinggi. Hal tersebut disebabkan karena Indonesia dilewati oleh cicin api pasifik yang mempertemukan banyak lempeng dunia, sehingga wajar bila banyak terjadi kegempaan di wilayah Indonesia. Dengan kondisi kegempaan yang cukup tinggi perlunya kewaspadaan serta Tindakan yang diambil guna menanggulangi keadaan tersebut. Sektor infrastruktur menjadi sorotan penting ketika terjadi gempa bumi, karena korban jiwa sering kali disebabkan karena kegagalan struktur yang tidak kuat menahan beban gempa yang terjadi. Hal ini serupa seperti yang terjadi pada gempa bumi di Kabupaten Cianjur pada tahun2022 yang memakan banyak korban jiwa karena banyaknya kegagalan struktur pada hunian tetap. Oleh karena itu pada penelitian ini dilakukan untuk mengevaluasi hunian tetap masyarakat terkait kerentanan yang terjadi akibat gempa bumi. Pengujian kerentanan bangunan dilakukan dengan metode Incremental Dynamic Analysis (IDA) dengan menggunakan data 11 rekaman gempa bumi. Nantinya akan diperoleh respon bangunan terhadap beban gempa yang bekerja serta diketahui angka probabilitas kerusakan yang dilihat dari kurva kerentanan. 5 performa level bangunan tersebut adalah Operational Phase (OP), Immediate Occupancy (IO), Damage Control (DC), Life Safety (LS), dan Collapse Prevention (CP)
