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Assessment of building fragility curve due to earthquake excitation / Siti Nur Aqilah Saruddin

Assessment of building fragility curve due to earthquake excitation_Siti Nur Aqilah Saruddin_A9_2017_MYMY
Tujuan utama kajian ini ialah membentuk lengkung kerapuhan untuk rangka tetap dan tidak tetap berdasarkan perbezaan jenis bahan struktur, ketinggian dan rekod pergerakan tanah. 6 set rangka konkrit dan keluli telah digunakan dalam kajian ini dengan ketinggian yang berbeza iaitu 3-, 6-, dan 9-tingkat untuk rangka tetap dan tidak tetap. Setiap struktur rangka direka berdasarkan Eurocode 2 dan 3 dengan bantuan Eurocode 8 untuk beban gempa bumi. Perisian SAP2000 telah digunakan sebagai perisian utama untuk analisa. Analisa pushover (POA) telah dijalankan untuk mendapatkan prestasi struktur berdasarkan beban statik. Daya corak segi tiga telah digunakan untuk menghasilkan hubungan dasar ricih-hanyut. Manakala, analisis dinamik tambahan (IDA) dijalankan dengan menggunakan tiga rekod pergerakan tanah bagi setiap medan dekat dan medan jauh. Di samping itu, gempa bumi Ranau telah dipertimbang dalam kajian ini untuk dua jenis keadaan; gempa bumi tunggal dan gempa bumi berulang. Keputusan daripada analisa IDA akan digunakan sebagai parameter utama untuk membentuk rangka kerapuhan. Lengkung IDA dibandingkan dengan 5 tahap prestasi seperti dinyatakan dalam kajian Xue et al. (2008) iaitu fasa operasi (OP), penghunian serta merta(IO), kawalan kerosakan (DC), keselamatan hayat (LS) dan runtuh pencegahan (CP). Berdasarkan keputusan daripada kajian ini, keputusan POA menunjukkan rangka tetap menghasilkan permintaan yang lebih tinggi berbanding rangka tidak tetap untuk struktur konkrit dan keluli. Daripada keputusan IDA, rangka tetap menunjukkan prestasi yang lebih baik untuk kedua-dua bahan di bawah rekod medan dekat dan medan jauh. Berdasarkan lengkung kerapuhan dihasilkan untuk medan dekat dan medan jauh, rangka tidak tetap menunjukkan kebarangkalian yang lebih tinggi untuk mencapai tingkat prestasi untuk rangka konkrit. Sementara itu, rangka tetap keluli menunjukkan kebarangkalian yang lebih tinggi untuk mencapai tahap prestasi. __________________________________________________________________________________ In this study, the main objective is to develop fragility curve of regular and irregular moment-resisting frame based on different types of structural material, height, and ground motion records. 6 sets of concrete and steel frames were used in this study and varied in terms of heights which are 3-, 6- and 9-storey for regular and irregular frame. Each structure frames was designed based on Eurocode 2 and 3 with the aid Eurocode 8 for earthquake loading. The SAP2000 was used as the main tool to carry out the analysis. A pushover analysis (POA) was performed to get the performance of the structure due to static load. Triangular load was used to produce base shear-drift relationship. Then, an incremental dynamic analysis (IDA) was carried out with 3 ground motion records for each set near and far field. In addition, the Ranau earthquake also considered in this study for two types of case; single and repeated earthquake. While to develop the fragility curve, the result from IDA will be used as the main parameters. The IDA curves were compared with five level of performance level from Xue et al. (2008) study which are operation phase (OP), immediate occupancy (IO), damage control (DC), life safety (LS), and collapse prevention (CP). On the basis of the result of this thesis, it can be concluded that from POA result showed regular frames demonstrate a higher demand compared to irregular frames for concrete and steel frames. From the IDA results, it was proven that regular frames perform better for both materials under near and far field records. Based on the fragility curves developed for the near and far field records, irregular frames showed a higher probability of reaching or exceeding the performance level for concrete frame. On the other hand, regular steel frames showed a higher probability of reaching and exceeding the performance level.
Contributor(s):
Siti Nur Aqilah Saruddin - Author
Primary Item Type:
Thesis
Identifiers:
Accession Number : 875008738
Language:
English
Subject Keywords:
fragility; Eurocode; exceeding
Sponsor - Description:
Pusat pengajian Kejuruteraan Awam -
Originally created:
2/1/2017
Original Publication Date:
3/4/2020
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 181
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2020-03-04 15:11:14.388
Date Last Updated
2020-11-27 15:27:49.144
Submitter:
Mohamed Yunus Yusof

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