scholarly journals Analisis Pengaruh Nilai Peak Ground Acceleration (PGA) Terhadap Story Shear Bangunan Bertingkat

2018 ◽  
Vol 9 (2) ◽  
pp. 1
Author(s):  
Ahmad Hamidi
Keyword(s):  
Coastal Area ◽  
Peak Ground Acceleration ◽  
Dynamic Method ◽  
Response Spectrum ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Spectrum Response

This study aims to analyze and examine the effect of peak land acceleration value (PGA) on shear story using dynamic method of response spectrum. The PGA value and the spectrum response used are the spectrum responses issued by the PU ministry. The review is soft land in the citys in Riau. The results showed that the higher the story shear value, the higher the PGA value in each region. The areas with the highest inner and PGA grades are Pasir Pangarian (Rohul) and the lowest is Kota Selat Panjang (Meranti District). This is because the area of Rohul Regency is an area close to West Sumatera Province that has a high enough earthquake intensity when compared with Meranti Regency which is a coastal area located on the lower plains.

scholarly journals Peak Ground Acceleration and Earthquake Intensity Microzonation in Watukumpul, Pemalang Regency

2019 ◽  
Vol 3 (2) ◽  
pp. 60
Author(s):  
Urip Nurwijayanto Prabowo ◽  
Ayu Fitri Amalia ◽  
Widodo Budhi
Keyword(s):  
Peak Ground Acceleration ◽  
Spectral Ratio ◽  
Ratio Method ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Predominant Period ◽  
The North ◽  
Central Java ◽  
Intensity Calculation ◽  
Microtremor Measurements

Watukumpul is located in Pemalang District, Central Java, which is adjacent to the fault seismotectonic line of Baribis fault in the north and subduction area of the Eurasian and Indies-Australian plates in the south. It makes Watukumpul often experiences an earthquake. This study aimed to map the peak ground acceleration calculated using the Kanai equation and earthquake intensity calculated using Wald equations in Watukumpul. This study used historical earthquake data occurred in 1988-April 2018 from the International Seismological Center and microtremor measurements of 33 points. Microtremor data were processed using the Horizontal to Vertical Spectral Ratio method and resulted the predominant period of study area ranged from 0.13 to 0.74 s. The results showed that the study area had a PGA value of 26.93 - 63.25 gal. The intensity calculation showed that the study area has the potential for earthquake damage with an III-IV MMI scale. Keywords: Kanai, Watukumpul, Intensity, Earthquake

Evaluation of Peak Ground Acceleration and Response Spectra Considering the Local Site Effects

2012 ◽  
pp. 1-17
Author(s):  
Sitharam T. G. ◽  
Vipin K. S.
Keyword(s):  
Seismic Hazard ◽  
Peak Ground Acceleration ◽  
Site Effects ◽  
Response Spectrum ◽  
Response Spectra ◽  
Site Classification ◽  
Ground Acceleration ◽  
Local Site Effects ◽  
Local Site ◽  
Uniform Hazard Response Spectrum

The local site effects play an important role in the evaluation of seismic hazard. The proper evaluation of the local site effects will help in evaluating the amplification factors for different locations. This article deals with the evaluation of peak ground acceleration and response spectra based on the local site effects for the study area. The seismic hazard analysis was done based on a probabilistic logic tree approach and the peak horizontal acceleration (PHA) values at the bed rock level were evaluated. Different methods of site classification have been reviewed in the present work. The surface level peak ground acceleration (PGA) values were evaluated for the entire study area for four different site classes based on NEHRP site classification. The uniform hazard response spectrum (UHRS) has been developed for the city of Bangalore and the details are presented in this work.

Effect of Ridge Topography on Earthquake Ground Motion

2012 ◽  
Vol 594-597 ◽  
pp. 1696-1701
Author(s):  
Guo Dong Xu ◽  
Zheng Hua Zhou ◽  
Jing Shan Bo ◽  
Wei Hua Fang
Keyword(s):  
Ground Motion ◽  
Peak Ground Acceleration ◽  
Response Spectrum ◽  
Vertical Direction ◽  
Earthquake Ground Motion ◽  
Topographic Effect ◽  
Ground Acceleration ◽  
Seismic Ground Motion ◽  
Remarkable Effect ◽  
Motion Amplitude

The ridge topography can substantially influence seismic ground motion and, in general, causes the amplification of seismic ground motion amplitude at ridges. Fortunately, sets of three-component accelerogram, obtained by the observation arrays for topographic effect at Zigong Xishan, Jiangyou Doutuan and Qingchuan Sanguo from the great Wenchuan earthquake and its aftershocks, provided basic data for analyzing the effect of ridge topography on seismic ground motion. On the base of these acceleration records, peak ground acceleration and response spectrum ratios are calculated, and examined and compared in order to grasp the effect of ridge topography on ground motion. The findings showed that ridge topography has the remarkable effect on seismic ground motion, in which the amplification characteristics varies depending on the shape of ridge topography, and the amplification effect of the horizontal directions are not similar to the vertical direction, and in some periods are even less than 1.0.

scholarly journals Towards improving the seismic hazard map and the response spectrum for the state of RN/Brazil

2021 ◽  
Vol 14 (3) ◽  
Author(s):  
Petrus Gorgônio Bulhões da Nóbrega ◽  
Bruno Rammon Silva Souza ◽  
Selma Hissae Shimura da Nóbrega
Keyword(s):  
Seismic Hazard ◽  
Peak Ground Acceleration ◽  
Hazard Analysis ◽  
Response Spectrum ◽  
The State ◽  
Hazard Map ◽  
Intraplate Earthquakes ◽  
Ground Acceleration ◽  
Design Response Spectrum ◽  
Seismic Hazard Map

Abstract Although Brazilian seismic activity is defined as low to moderate, it is known that intraplate earthquakes can also be associated to high intensities. In Brazil, the state of Rio Grande do Norte (RN) is one of the most seismically active areas, but there is no specific study to evaluate the seismic hazard in this region. This paper presents analyses towards improving the seismic hazard map, the peak ground acceleration value and the response spectrum of RN. The methodology is based on Probabilistic Seismic Hazard Analysis, comparing the results to the design criteria defined in the Brazilian code NBR 15421:2006 (Design of seismic resistant structures – Procedure). The analyses show that, in general, the code sets conservative values for the peak ground acceleration and for the design response spectrum; however, related to this last one, the shape is quite different.

scholarly journals Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) Analyze for Microzonation of Earthquake Hazard Area: Case Study in West Nusa Tenggara

2021 ◽  
Vol 873 (1) ◽  
pp. 012046
Author(s):  
T Razin ◽  
K Khatimah ◽  
Y Annisa ◽  
A Hamzah ◽  
M F I Massinai
Keyword(s):  
Peak Ground Acceleration ◽  
Earthquake Damage ◽  
Peak Ground Velocity ◽  
Risk Level ◽  
Soil Conditions ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Tectonic Zone ◽  
Local Soil ◽  
Earthquake Data

Abstract The Lombok region is located around a complex tectonic zone with an Indo-Australian oceanic crust transition zone with Australian continental crust in the west and Sundanese arc in the east. This complexity makes some area in West Nusa Tenggara have a high level of earthquake vulnerability and to determine the potential level of seismic damage risk this study was conducted by analyzing Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) using earthquake data since 2000 - March 2020 with an intensity more than M4.5. Earthquake data are analyzed using the Yin-Min Yu formula to get the relationship between Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), and earthquake intensity, so areas with risk level of earthquake damage can be mapped as preliminary earthquake mitigation schemes. The results of the study show that the highest PGA value in West Nusa Tenggara is 74.73 gal at the bedrock and when it on the surface, the PGA value can increase due to amplification of local soil conditions. Likewise PGV value about 32.21 gal where this maximum value is located in East Lombok Regency and North Lombok Regency. According to the classification of PGA and PGV values, the study area has a potential high-risk level of earthquake damage.

scholarly journals ANALYSIS OF A PEAK GROUND ACCELERATION VALUE AND EARTHQUAKE INTENSITY USING DONOVAN METHOD IN BANTEN PROVINCE

2020 ◽  
Vol 5 (3) ◽  
pp. 213-220
Author(s):  
Elsi Ariani
Keyword(s):  
Peak Ground Acceleration ◽  
Risk Level ◽  
Historical Earthquake ◽  
Moderate Risk ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Prone Area ◽  
Maximum Earthquake ◽  
Data Analysis Result ◽  
Earthquake Data

Analysis of a peak ground acceleration value and earthquake intensity in Banten Province has been carried out using historical earthquake data from 2008 to 2018. This research aims to describe a prone area of the earthquake. The specification of data was a magnitude > 5 SR and the depth 0-70 km. The Donovan method was used to analyze peak ground acceleration value and the earthquake’s intensity. According to the data obtained, 31 earthquake points with a maximum earthquake strength occurred on October 16, 2019, with a depth of 10 km and a magnitude of  6.48 SR. This earthquake was located in Ujung Kulon with coordinates -6.81 LS and 105.113 BT. Based on data analysis result was obtained a peak ground acceleration value and the intensity of earthquake maximum in The Pandeglang Regency with a peak ground acceleration value was 211.56 cm/s2, and intensity of scale VIII and a large risk level of three. While a peak ground acceleration minimum is located in the South Tangerang City was 62.82 cm/s2 with a scale of intensity VII and a moderate risk level.

scholarly journals PENENTUAN ZONASI GEMPA BERDASARKAN POLA PENYEBARAN GEMPA BUMI DI DAERAH PROVINSI JAWA BARAT

Wahana Fisika ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 62
Author(s):  
Siti Azizah Sutisna ◽  
Mimin Iryanti ◽  
Judhistira Aria Utama
Keyword(s):  
Seismic Data ◽  
Peak Ground Acceleration ◽  
Earthquake Intensity ◽  
West Java ◽  
Ground Acceleration ◽  
Tectonic Earthquake ◽  
Calculation Process ◽  
Class 1 ◽  
Year 2000 ◽  
Earthquake Data

Provinsi Jawa Barat dibatasi oleh 5°50’ sampai 7°50’ Lintang Selatan dan 104°48’ sampai 108°48’ Bujur Timur. Penelitian ini bertujuan untuk mengetahui seismisitas dan zonasi di daerah Provinsi Jawa Barat. Seismisitas dapat di ketahui dari peta seismisitas berdasarkan kedalaman dan magnitudo, untuk memperoleh peta seismisitas di daerah Provinsi Jawa Barat yaitu dengan menggunakan data gempa bumi tektonik harian atau realtime dengan periode terjadinya gempa bumi pada tahun 2000-2015, yang bersumber dari BMKG (Badan Meteorologi Klimatologi dan Geofisika) Klas 1 Bandung. Data gempa terdiri dari tanggal, waktu  terjadinya gempa, lintang, bujur, kedalaman dan magnitudo (M ≥ 4.5 SR), data yang ada di proses dengan menggunakan Software Arcgis 10.3 sehingga menjadi peta seismisitas yang telah di klasifikasikan berdasarkan kedalaman dan magnitudo gempa bumi. Zonasi di daerah Provinsi Jawa Barat di peroleh dengan menentukan nilai Percepatan Tanah Maksimum (Peak Ground Acceleration) yang terbagi kedalam 18 kabupaten, dan menentukan nilai PGA dan intensitas gempa di setiap Kabupaten, adapun cara untuk memperoleh nilai PGA dan intensitas gempa yaitu dengan melakukan proses perhitungan data gempa yang ada, dengan menggunakan metode Gutenberg Richter. Sehingga di peroleh kesimpulan berdasarkan peta seismisitas di dapatkan distrubusi gempa bumi berjumlah 792 gempa bumi, serta zonasi gempa bumi di daerah Provinsi Jawa Barat berdasarkan nilai PGA sebesar 25-29 gal, dan nilai intensitas gempa bumi sebesar V.West Java province bounded by 5 ° 50 'and 7 ° 50' south latitude and 104 ° 48 'to 108 ° 48' east longitude. This study aims to determine the seismicity and zoning in the area of West Java Province. Seismicity can be in the know of seismicity map based on the depth and magnitude, to obtain the map of seismicity in the area of West Java province is by using daily tectonic earthquake data or realtime with the period of the earthquake in the year 2000-2015, which is sourced from BMKG (Meteorology and Geophysics) Class 1 Bandung. Seismic data consists of the date, the time of the earthquake, latitude, longitude, depth and magnitude (M ≥ 4.5 SR), the data that is in the process of using ArcGIS 10.3 software so that a map of seismicity which has been classified based on the depth and magnitude of the earthquake. Zoning in the area of West Java province was obtained by determining the value of the Acceleration of Land Maximum (Peak Ground Acceleration), divided into 18 districts, and determine the value of PGA and intensity of earthquakes in each district, as for how to obtain the value of PGA and earthquake intensity by performing the calculation process existing seismic data, using Gutenberg Richter. Thus obtained conclusions based on maps of seismicity in distrubusi get earthquakes amounted to 792 earthquakes, and earthquake zoning in the area of West Java Province based on the value of the PGA of 25-29 gal and earthquake intensity value of V.Keywords: Zoning earthquake, seismicity , Software ArcGIS 10.3., Methods Gutenberg Richter earthquake intensity.

Seismic Response Characteristics of Deep Soft Site with Depth under Far-Field Ground Motion of Great Earthquake

2011 ◽  
Vol 378-379 ◽  
pp. 477-483
Author(s):  
Ji Yan Zhan ◽  
Guo Xing Chen ◽  
Dan Dan Jin
Keyword(s):  
Peak Ground Acceleration ◽  
Response Spectrum ◽  
Ground Motions ◽  
Great Earthquake ◽  
Far Field ◽  
Acceleration Response ◽  
Ground Acceleration ◽  
Long Period ◽  
Reduction Coefficient ◽  
Acceleration Response Spectrum

Considering the dynamic nonlinear characteristics of soil by equivalent linear method, one-dimensional wave models were established to study the seismic effects along depth of deep soft sites under far-field ground motions of great earthquake. The results show that the magnified effect of acceleration response spectrum of each layer present more outstanding under far-field ground motions than under Suzhou artificial waves, with the increasing of bedrock peak ground acceleration, there is probability that the peak of long-period component of acceleration response spectrum appears higher than that of the short-period within 15m depth, which may adversely affect the long-period building structures. However, the reduction coefficient of peak ground acceleration (PGA) along depth according to the three levels of earthquake fortification standard was relatively higher when inputting far-field ground motions of great earthquake. As the curve fitted by Longjun Xu et al. based on records collected California Strong Motion Instrumentation Program geotechnical arrays of the United States and Hosokura Mine arrays of Japan, is not suitable for Suzhou area, suited quantitative formula about reduction coefficient curve of PGA with depth in deep soft site is given. Besides, maximum shear strain at the depth of approximately 15m and 40m present to be greatly changed when inputting far-field ground motions of great earthquake, with the growth of inputting bedrock peak ground acceleration, the layer in the depth of about 15m comes to be the most unfavorable position of shear deformation.

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