Papers by Keyword: Reinforcing Method

Abstract: In view of the rapid development of the high-speed rail construction in China at present, some new plain concrete piers of railway bridges cracked in an increasing trend. Combining a real project, this paper analyzed the causes of the cracking in massive concrete piers through the actual construction condition and the materials prosperities, and made corresponding prevention and improvements for the cracking, provided the reinforcing treatment of cracking piers with corresponding programmes. The analysis and treatment measures for the project will present a reference for the similar projects in the future.

Abstract: This paper presents experimental results of cyclic loading tests carried out on three L-shaped prestressed concrete beam-column corner joints. Three types of reinforcing methods to enhance the anchorage performance of beam and column longitudinal reinforcing bars were studied based on the experimental results such as the load-displacement relation curves, deformation capacity, prestressing force variation, and strain measurements of the beam and column reinforcing bars. The test specimens were KPCL1 with the column longitudinal reinforcement with 180-degree hooks at their ends, KPCL2 with the column longitudinal reinforcement bent in a U-shape, and KPCL3 with U-shaped column longitudinal reinforcement and additional transverse reinforcement on the beam longitudinal reinforcement. It can be concluded that the anchorage performance was somehow enhanced by the three reinforcing methods in the positive direction of loading (closing direction), while in the negative direction of loading (opening direction) there was no remarkable improvement.