Overview of standards for static and dynamic proof load testing of RC bridges

Abstract

The primary purpose of the testing of structures with proof load is to obtain data on their actual load-bearing capacity, stability, serviceability, as well as on other parameters of their behaviour, ie., on the compliance of the constructed structure with the used numerical model. In addition, such testing can be a final control (confirmation) of the quality of the newly built buildings. Bridges are one of the structures that, depending on their purpose and span, are subject to proof load testing, which depending on the way the load is applied, can be static and dynamic. As a prerequisite for performing a quality test, it is necessary to follow and apply standardized procedures, including a quality test program and the application of precise, calibrated measuring equipment. The neglect of these procedures leads to doubts about the measured results' reliability and usability. This paper first focuses on reinforced concrete bridges' static and dynamic proof load testing procedures. The specific aspects of the proof load testing are then presented, with an overview of the necessary previous work to be done before starting the test, determining the intensity of the proof load, the procedures that follow during the test process, and the post-processing of the measured results and their analysis. Based on the performed review and systematization of the procedures for examination with proof load, as well as the experiences gained from examination of a large number of real scale objects, in the end, specific procedures and practical recommendations for conducting this type of examination are proposed.