AI SearchA numerical study on the application of the sub-structure method for retrofitting : (Record no. 838)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04094nas a2200373 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817161323.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 260202s20249999th u ms t 000 eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12473881 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.ST-24-27 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | May Chue Nyeint |
| 245 10 - TITLE STATEMENT | |
| Title | A numerical study on the application of the sub-structure method for retrofitting : |
| Remainder of title | a case study of a school building in Dhaka, Bangladesh |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2024 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 90 leaves : |
| Other physical details | ill.+ |
| Accompanying material | 1 online resource |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. ST-24-27 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2024 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This thesis presents a numerical analysis aimed at assessing the effectiveness of external sub-structure retrofitting methods for enhancing the seismic performance of a school building in Dhaka, Bangladesh. Due to the region{u2019}s geological conditions and history of seismic events, improving the resilience of existing structures, particularly in densely populated and economically vital areas, is crucial. The study focuses on the Kobbad Sardar Government Primary School, a two-story reinforced concrete (RC) structure constructed under outdated seismic codes.The research employs the Applied Element Method (AEM) to evaluate three external sub-structure retrofitting techniques: the Master Frame Construction Method, the Portal Grid (PG) Method, and the External PT-PBSPC Frame Sub-Structure Method. Numerical models of both the existing building and retrofitted configurations were analyzed under static monotonic and incremental dynamic loads. Comparative assessments were performed to evaluate seismic performance improvements in terms of base shear capacity, drift ratio, ductility, crack pattern and deformation.Results from static analyses reveal significant enhancements in base shear capacity for all retrofitted cases. While the un-retrofitted building achieves a base shear of 998 kN, Retrofit-1 demonstrates the highest improvement at 2349 kN (a 135% increase), followed by Retrofit-2 at 2157 kN and Retrofit-3 at 2311 kN. Incremental dynamic analysis further confirms the effectiveness of retrofitting. For instance, under Imperial Valley ground motions, the un-retrofitted structure suffers extensive damage, while all retrofitted cases reduce this to slight damage with minimized deformation across all PGA levels. Similarly, under Parkfield and Tottori ground motions, retrofitting mitigates damage significantly, with Retrofit-3 exhibiting the best performance.Additionally, retrofitting slightly reduces the natural frequency of the structure, signifying increased stiffness and improved resistance to seismic forces. These findings highlight the importance of adopting external sub-structure retrofitting techniques for similar buildings in Dhaka, ensuring enhanced safety, cost-effectiveness, and minimal disruption. The proposed methods contribute to sustainable and resilient urban infrastructure development in earthquake-prone regions. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | School buildings |
| General subdivision | Retrofitting |
| Geographic subdivision | Bangladesh |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | School buildings |
| General subdivision | Earthquake effects |
| Geographic subdivision | Bangladesh |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Building repair |
| Geographic subdivision | Bangkadesh |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Krishna, Chaitanya, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pennung Warnitchai, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Anwar, Naveed, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Loom Nam Khong Pijai (Greater Mekong Subregion) Scholarships, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. ST-24-27 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B23546">http://203.159.5.9/ait-thesis/Viewer/viewer.php?id=B23546</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12473881 |
| b | mnarc |
| c | a |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 260216 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 260213 |
| First date, FD (RLIN) | m |
| -- | h |
| -- | a |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 67-Electronic Resource |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2026-02-02 |
| RECORD Id | RECORD # : i13570511 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.ST-24-27 | 17/08/2026 | 1 | 17/08/2026 | 67-Electronic Resource |