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Ground motion prediction equation for east Malaysia and structural response of building in main cities of sabah

Ground motion prediction equation for east Malaysia and structural response of building in main cities of sabah / Khoo Zheng Yang
Pada Jun 2015 Malaysia mengalami gempa bumi yang paling besar dalam sejarah terdekat ini apabila satu gempa bumi bermagnitud 6 di Ranau, Sabah dan telah menyebabkan kerosakan yang serius terhadap bangunan-bangunan di rantau Ranau dan Kundasang. Sejak peristiwa gempa bumi ini, reka bentuk seismik telah menjadi satu perhatian bagi para jurutera penyelidik untuk mencegah bangunan dan infrastruktur daripada kerosakan seismik pada masa depan. Ciri-ciri gerakan bumi adalah amat penting bagi manghasilkan reka bentuk struktur yang tahan beban seismik serta ekonomi. Namun kekurangan data gerakan bumi di Malaysia Timur menyababkan kesukaran untuk membangunkan persamaan pengecilan gerakan bumi untuk Malaysia Timur. Kajian berkaitan yang telah dilakukan untuk Malaysia Timur adalah sangat terhad. Dengan adanya lebih banyak data terkini daripada peristiwa gempa bumi yang berlaku di Sabah, projek penyelidikan ini bertumpukan terhadap memilih persamaan pengecilan gerakan bumi yang sesuai untuk aplikasi di rantau Malaysia Timur berdasarkan 15 model pengecilan yang terpilih. Set data yang terdiri daripada 509 rekod pecutan bumi puncak (PGA) sebenar yang berasal daripada 159 peristiwa gempa bumi telah digunakan dalam penyelidikan ini. Set data ini yang diperolehi daripada 33 stesen seismik yang beroperasi di bawah Jabatan Meteorologi Malaysia (JMM) digunakan untuk perbandingan antara model pengecilan. Penormalan ralat punca min kuasa dua (RMSENor) juga dikira sebagai pengukuran kuantitatif bagi ketepatan ramalan gerakan bumi oleh model pengecilan. Hasil analisis menunjukkan bahawa model Ambraseys et al. (2005) memberi ramalan PGA yang terdekat bagi gempa bumi untuk julat magnitud 2 ke 4 di rantau Sabah. Model Fukushima and Tanaka (1990) dicadangkan untuk digunakan bagi ramalan PGA gempa bumi untuk julat magnitud 5 dan 6 di rantau Sabah. Manakala untuk rantau Sarawak, model Ambraseys et al. (2005) dicadangkan untuk digunakan bagi ramalan PGA. Seterusnya, ramalan PGA digunakan untuk menjalankan analisis struktur bagi memahami sambutan struktur di bawah beban seismik di Ranau, Kota Kinabalu dan Ladah Datu bagi beberapa senario gempa bumi. Sambutan struktur dijangka akan meningkat 55% hingga 60% di Kota Kinabalu, 25% hingga 30% di Ranau dan 20% di Lahad Datu untuk gempa bumi ramalan berbanding dengan gempa bumi sejarah yang paling besar. _______________________________________________________________________________________________________ In June 2015 Malaysia experienced the strongest earthquake in recent years as a magnitude 6.0 earthquake struck Ranau and damaged many buildings in the region of Ranau and Kundasang. Since this earthquake event, seismic design for East Malaysia has become a concern for many engineers and researchers to prevent seismic damage of important structures and infrastructures in the future. Characteristics of ground motions is vital for safe and economical design of seismic resistant buildings. However due to the scarcity of historical data, it is difficult to establish a ground motion prediction equation (GMPE) for East Malaysia. Very limited past related studies have been conducted for East Malaysia. With the availability of more data from the latest earthquakes in Sabah, this study focuses on selecting suitable established GMPE to be adopted for use in East Malaysia from a total of 15 pre-selected GMPE. A data set which consist of 509 actual recorded peak ground acceleration (PGA) from 159 earthquake events obtained from 33 seismic station operated by Malaysian Meteorological Department (MMD) was used for comparison with the predicted PGA of each GMPE. Normalised root mean squared error (RMSENor) values were calculated to provide quantitative measure of how well the GMPEs predict ground motions. From the result, Ambraseys et al. (2005) GMPE is proposed for the use of predicting ground motion for earthquake with magnitude range of 2 to 4 in Sabah while Fukushima and Tanaka (1990) is proposed for the use of predicting ground motion for earthquake with magnitudes 5 and 6 in Sabah. As for Sarawak, Ambraseys et al. (2005) GMPE is proposed for the use of predicting ground motion. Predicted ground motions were used for the study of structural response of a four storey building in Ranau, Kota Kinabalu and Lahad Datu under different earthquake scenarios. The structural responses are expected to increase 55% to 60% in Kota Kinabalu, 25% to 30% in Ranau and 20% in Lahad Datu for forecast earthquake as compared to the largest historical earthquake.
Contributor(s):
Khoo Zheng Yang - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875008303
Language:
English
Subject Keywords:
earthquake; magnitude; Ranau
First presented to the public:
6/1/2019
Original Publication Date:
9/26/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 119
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-09-26 15:17:53.062
Submitter:
Mohd Jasnizam Mohd Salleh

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