Frame node self-balancing continuous loading device for coupling chlorine salt environment and load

Abstract

The invention provides a frame node self-balancing continuous loading device for coupling a chlorine salt environment and a load, which can simulate the stress condition of a frame edge node in an actual engineering in the chlorine salt environment, and comprises the frame edge node of a frame structure, a loading system, a rusting system and a measurement system. The loading system applies an axial load to the column end of the frame edge node and applies a load parallel to the direction of the frame column to the beam end of the frame edge node, the rusting system is connected with the frameedge node and is used for rusting the internal metal parts of the frame edge node according to preset parameters, and the frame edge node is connected with the measurement system and is used for monitoring the time-varying mechanical properties of the frame structure in a rusted environment in real time. The device is simple in structure and is convenient to mount and dismount, can apply the continuous load on a component to obtain the experimental data while the environmental erosion is simulated, can keep the no stress relaxation during the long-term load holding process, and real-timely monitors the time-varying degradation mechanical property of the frame edge node under the load and environment coupling effect.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a frame node self-balancing continuous loading device used for coupling the chloride salt environment and the load. Background technique [0002] A large number of concrete durability studies are carried out without continuous load, while concrete structures in actual engineering are subject to certain continuous loads while being subjected to environmental erosion (such as carbonation, freeze-thaw, chloride salt penetration, etc.), so The durability research results without considering the continuous load cannot truly and comprehensively reflect the actual stress state of the structure. The long-term time-varying mechanical properties of reinforced concrete members under the coupling of load and environment has become a hot and difficult point in the field of civil engineering research. However, there is currently no self-balancing continuous loading device for reinfo...

AI Technical Summary

Problems solved by technology

However, there is currently no self-balancing continuous loading device for reinforced concrete frame edge joints under the coupling of load and environment

[0003] Existing reinforced concrete frame edge joints are tested on the steel structure reaction frame test bench, which is generally a destructive test, and the test bench cannot apply continuous load (the oil pump is overheated and the equipment is damaged); the environment is also not considered The influence of the action on the mechanical properties of the frame edge nodes (chlorine salt environment is very easy to corrode precision instruments such as electro-hydraulic servo actuators, force sensors, extensometers), and it is impossible to monitor the time-varying mechanics of the frame edge nodes under the coupling of load and environment in real time performance

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