Development of a nonlinear truck model for the analysis of bridge-truck dynamic interaction | |
| Author | Krit Chaimoon |
| Call Number | AIT Thesis no. ST-99-26 |
| Subject(s) | Bridges--Live loads Trucks--Dynamics |
| Note | A thesis submitted in paitial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Abstract | A non-linear truck model of three-axle, single-unit truck, typically used in Thailand is developed. The model is three-dimensional and is composed of a rigid body mass, non-linear suspension systems, four unsprung masses, and linear tire springs. This model has seven degrees of freedom. The non-linear relation of force and displacement of suspension springs and tires are identified by direct quasi-static loading test of a full-scale truck. It is found that the obtained force-displacement relations of suspension springs fit well with the Francher model. Parameters of the model that give the best fit are identified. It is also found that tires behave as linear springs. The verification of the developed non-linear truck model is accomplished by comparing the computed results with test results for the case that a truck is running over a bump at a constant speed. The verification indicates that the developed truck model exhibit dynamic characteristics similar to real truck. A bridge-truck interaction model based on the proposed truck model is also formulated. This interaction model is used for the parametric study. As expected, bridge response depends on various parameters such as speed, span length, surface roughness, and bridge damping. |
| Year | 1999 |
| Type | Thesis |
| School | School of Engineering and Technology |
| 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;Pennung Warnitchai; |
| Examination Committee(s) | Worsak Kanok-Nukulchai;Taweep Chaisomphob; |
| Scholarship Donor(s) | AIT Partial Scholarship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology. |