Fiber reinforced resin composite rod/plate pulling-bending coupling loading device

Abstract

The invention discloses a fiber reinforced resin composite material rod / plate pulling-bending coupling loading device, which solves the problem that the current testing device cannot meet the requirement of a material performance characterization test, and comprises a fixing device and a loading device, the fixing device comprises two groups of anchorage devices, two groups of vertical plates, an upper base, a lower base and four groups of height adjusting screw rods, the two sets of anchorage devices penetrate through anchorage device preformed holes in the two sets of vertical plates respectively and are located on the outer sides of the two sets of vertical plates to be fixedly connected with the two sets of vertical plates, the two ends of the FRP rod / plate are fixedly connected with the two sets of anchorage devices respectively, and the loading device comprises a pressure sensor, an adapter, a counter-force frame, a jack and a dowel bar. The stress area of the pressure sensor is tightly attached to the outer wall face of the side vertical plate, the anchorage device on the other side is fixedly connected with one end of the dowel bar through the adapter, and the other end of the dowel bar sequentially penetrates through the side plate of the reaction frame and an action rod of the jack and is fixedly connected with the action rod of the jack. The device can provide accurate loading amplitude.

Description

technical field [0001] The invention relates to a fiber reinforced resin composite material rod / plate tension-bending coupling loading device. Background technique [0002] Fiber Reinforced Polymer (FRP) has the advantages of high specific strength / modulus, corrosion resistance, fatigue resistance, etc. It has been widely concerned in the field of civil engineering, and has been widely promoted and applied. Compared with steel, FRP has become an ideal substitute for steel in many civil engineering structures because of its light weight, corrosion resistance, and long-term maintenance costs are much lower than the latter. Since the 1990s, my country has carried out a lot of work on the research and development, performance evaluation and demonstration applications of FRP products for civil engineering. At present, the application of FRP in the field of civil engineering shows a rapid development trend. Generally, FRP products for civil engineering mainly include FRP plates,...

AI Technical Summary

Problems solved by technology

Although in the above application scenarios, the tensile properties of FRP rods / plates are mainly used, lateral loads will inevitably be generated during their service. Due to the large pre-tension in FRP rods / plates in service, the lateral load and The coupling stress generated by the longitudinal load may lead to unpredictable damage or even brittle fracture of the FRP rod / plate

[0004] The existing FRP rod / plate mechanical performance test devices mainly use a single loading method, such as uniaxial tension device, three-point bending device, short beam shear device, etc. These devices cannot meet the tension-bend coupling stress in the above application scenarios. The application of and the cable body displacement boundary conditions in service

Images