Dynamic interaction between 10-wheel truck and steel multi-girder overpass bridge | |
| Author | Boonchu Sedchaicharn |
| Call Number | AIT Thesis no. ST-98-21 |
| Subject(s) | Structural dynamics Elevated highways |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | An analytical model which describes the dynamic interaction between overpass bridge and 10-wheel truck is formulated. The model consists of two parts: overpass bridge model, and 10-wheel truck model. The bridge model has two degrees of freedom because the bridge vibration is assumed to be dominated by bending mode and torsional mode. The truck model also has two degrees of freedom since only bounce and pitch motions are considered. The effects of surface roughness are also included. This interaction model is derived from Lagrange's equation of motion. To examine the accuracy of the model, a full-scale dynamic bridge test is carried out. The test bridge is a steel multi-girder overpass bridge at Ratchayodhin Intersection in Bangkok, while the test truck is a commercial 10-wheel truck which is commonly used in Thailand. Various dynamic responses, which include acceleration and strain responses are recorded. A separate test of the test truck is also conducted by running the test truck over sine-shaped bump. Based on the results of the separate test, the basic physical properties of the test truck are identified. These properties were incorporated in the dynamic interaction model. The comparison between the analytical and experimental results is then carried out. The results show that the interaction model. can simulate all principal dynamic interactions of bridge-vehicle system. The parametric analysis of the model is conducted to study the dynamic behavior of bridge and vehicle in the range beyond the test condition. From the analysis, it is shown that the DAF of girders of the overpass bridge is sensitive to various factors such as vehicle speed, roughness, frequency ratio, and span length. The results of this analysis are useful for bridge design and further study of the DAF. |
| Year | 1998 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai; |
| Examination Committee(s) | Worsak Kanok-Nukulchai;Wijeyewickrema, Anil C.;Taweep Chaisomphob; |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |