| Author | Cheali, Arfarn |
| 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 | Due to the shortage of labor in construction industry, the requirement of construction quality, and the competitive construction market were affected to the development of precast concrete structures in Thailand construction. The usage of precast beam-column frame by welding splice method are used widely in Thailand. However, the structural continuity is confirmed by previous researcher that this method could achieved only design load at 50 kN/m which less than 33.33% of sectional beam moment capacity. The development of precast for small sectional commercial building is emphasized in this study. This study compared monolithic specimen (MO) and precast specimen (PC) in order to study the failure mechanism and the performance of new precast beam-column connection. Both of monolithic specimen (MO) and precast specimen (PC) had same structural indices which tested under simulated uniformly gravity load of new developed boundary condition of interior beam-column frame. The construction process of beam-column moment frames required the continuity of beam reinforcement expressed as development length. The development length provided in precast specimen (PC) for splice bar was only 49.6% of 45?? length. The steel tube splice technique was used with spliced bar can be reduced the development length to 7?? length. The u-shell 700 mm length with wall thick 25 mm used as permanent formwork in casting beam-column joint. The installation process of precast specimen started by installed precast beam to column face, then inserted splice bar and steel tube, and casted high strength grout in beam-column joint and inner u-shell. As a result, the precast beam-column specimen (PC) can be resisted the load of their design section nominal load. |
| Year | 2020 |
| 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) | Punchet Thammarak; |
| Examination Committee(s) | Thanakorn PheeraphanRaktipong Sahamitmongkol; |
| Scholarship Donor(s) | Loom Nam Khong Pijai ( Greater Mekong Subregion) Scholarships; |