According to the short lasting time of the vibration above , the maximum transient vibration value of the acceleration is selected as the comfort index , which is also the criterion to decide if the differential settlement is tolerable
2.
Then , taking into account the effect of the compression of the approach roadway and the differential slope of the bridge slab , the author analyzes the dynamic response of man - vehicle - road system when the vehicle approaches and leaves the bridge by means of laplace transform , the curve of man ' s acceleration versus time , the vertical force between the vehicle and road versus time , the man ' s maximum transient vibration value and the maximum force between the vehicle and road are got , and the program about the calculating progress above are edited . based on the analysis above , the influence on the maximum transient vibration value of some parameters about the vehicle and road such as the movement direction and speed and weight of the vehicle , the differential slope of the bridge slab and the length of the approach slab , are studied , and some conclusion are given
मोबाइल