Numerical study of blast loads on buildings to understand the lethality of non-structural elements | |
| Author | Tanyaporn Chouydamrong |
| Call Number | AIT Thesis no.ST-22-08 |
| Subject(s) | Blast effect--Mathematical models Buildings--Blast effects |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | As the world evolves, some hazardous chemical substances are created for use in everyday facilities, such as gas, oxygen tanks, or some chemical substances utilized on factory manufacturing lines. Several situations do not have results in deaths, but most of injuries are damaged by non-structural components or flying debris of bricks or glasses. The study of the non-structural components should follow, and it should focus on finding materials that can be used to limit damage to residents on their own. The collapse process of the building subjected to blast load started with the continuum to the discrete elements because the blast loading is an extremely forceful event that generates high strain rates in short duration. Then, the suitable approach to simulate it is the Applied Element Method (AEM). This numerical method outperforms others in terms of CPU performance and ability to predict the collapse process. Additionally, the Comprehensive Blast Analysis (CBA) was used in this study to analyze the numerical results. The main purpose of this research is to investigate the impact of blast pressure with various scaled distance, to conduct the comprehensive blast analysis to obtain the lethality of non-structural elements, and to provide the recommendations for blast loading resistant the building. The lethality was separated into two considered parts, which are the structural health of the structure and flying debris impacting the inhabitants. The absorbed energy calculated by integrating the square acceleration represents the structural health. Moreover, the kinetic energy of flying debris highlights the serious harm to individuals. According to the study's findings, glass walls are the ones that absorb energy the least. On the other hands, this material creates the highest kinetic energy of fragment components. For inhabitants’ safety, reinforced concrete (RC) and reinforced concrete with opening infilled glass walls (RCO) are lower than other materials. The reinforced concrete with opening infilled glass (RCO) can then be absent if the building's interior is to be visible, but the infilled component must nevertheless improve the material's qualities by utilizing fiber-reinforced concrete or polymer layers to lessen the kinetic energy that harms inhabitants. |
| Year | 2022 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Krishna, Chaitanya; |
| Examination Committee(s) | Pennung Warnitchai;Thanakorn Pheeraphan;Anwar, Naveed; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2022 |