Sensitivity Analysis of Punching Shear Capacity of concrete bridge deck: a case study of Sirilak Bridge, Ratchaburi province

Abstract

Thailand has an increasing rate of transport, especially land transport and traffic on bridge structures. The increase in vehicular traffic has resulted in damage to the bridge deck due to the tendency of the load to increase and the load acting on the bridge structure over a long period. The bridge condition assessment must consider the loading behavior and the current condition of the bridge structure to ensure maximum safety for drivers and road users. As a result, the Sirilak Bridge, Amphoe Mueang Ratchaburi, Ratchaburi province, serves as a case study to conduct a non-destructive examination of the bridge health and apply field data to develop a mathematical model with analytical equations for predicting the load under the punching shear failure of the bridge deck. The results demonstrated that the reduction in concrete compressive strength affected the initial stiffness and applied load capacity. The crack propagation of the bridge deck has also reduced.