Continuous beam hogging moment zone chlorine salt environment load holding experiment device and experiment method

Abstract

The invention discloses a continuous beam hogging moment zone load holding experiment device and experiment method in a chlorine salt environment, and relates to the technical field of engineering experiments. Comprising a high-rigidity main frame, a load system, an erosion system and a test beam, and the test beam is detachably arranged on the high-rigidity main frame; the load system is arranged on the high-rigidity main frame, is positioned below the test beam and is used for applying a load to the test beam; the erosion system is arranged on the test beam, and a chlorine salt solution is arranged in the erosion system; the test beam is a continuous beam meeting design requirements. According to the experimental device, the test beam can be fixed to the load system, reverse balance force is provided for the test beam by adjusting the adjustable counter-force support, the load system provides force needed by load holding, and the load holding state is simulated; the erosion system and the dry-wet circulation system provide dry-wet circulation conditions in a chlorine salt environment; the experimental device provided by the invention is stable and reliable, is convenient to use, and can provide test conditions for the dry-wet cycle and loading coupling effect in the chlorine salt environment.

Description

technical field [0001] The invention relates to the technical field of engineering experiments, in particular to a load-holding experimental device and an experimental method in a chloride-salt environment in a continuous beam negative moment zone. Background technique [0002] Continuous beams refer to beams with three or more supports in construction, bridge, aviation and pipeline projects. In engineering, the negative bending moment area of ​​continuous beam bridges is subject to upward concentrated loads. When there is snow on the road in winter, use chlorine The salt deicing agent is used for snow removal, and the process of snow melting changes from dry to wet, which causes the continuous beam to be eroded by the chloride salt solution, so that the continuous beam negative moment area is subject to concentrated load and chlorine salt erosion and dry-wet cycle Joint action; both load and chloride salt environment have an impact on the bearing capacity of continuous beam...

AI Technical Summary

Problems solved by technology

[0002] Continuous beams refer to beams with three or more supports in construction, bridge, aviation and pipeline projects. In engineering, the negative bending moment area of ​​continuous beam bridges is subjected to upward concentrated loads. When there is snow on the road in winter, use chlorine The salt deicing agent is used for snow removal, and the process of snow melting changes from dry to wet, which causes the continuous beam to be eroded by the chloride salt solution, so that the continuous beam negative moment area is subject to concentrated load and chlorine salt erosion and dry-wet cycle Joint action; both load and chloride salt environment have an impact on the bearing capacity of continuous beams; this effect is aggravated under the action of dry-wet cycle; how does load and chloride-salt environment dry-wet cycle affect the chloride ion intrusion into concrete At present, devices are installed on the bridge body for detection. This on-site detection method cannot be continuously detected, the load is not constant, and it is inconvenient to detect chloride ion erosion. The test is not accurate and the cost is high.

Images