Multi-plane complex load loading test system and test method for spatial structure

Abstract

The present invention provides a multi-plane complex load loading test system and test method for a spatial structure, and belongs to the technical field of the civil and marine engineering structuretest. The test system comprises a test system base arranged on the foundation, a loading system operating platform, a hydraulic oil source, a pressurized oil pump, a cooling water tank, and an electronic control system. The test system base is provided with an adjustable reaction force column and a plurality of independent loading units, wherein one side of the adjustable reaction force column isprovided with a cantilever flange fixed end. The upper end of the chord of the test piece is fixedly connected with the cantilever flange fixed end, the lower end of the chord of the test piece is fixed on the test system base, and struts of the test piece are fixedly connected with the flange connection faces of the respective independent loading units. The test system has two kinds of loading modes of force control and displacement control, cyclic loading of a single load or a load combination can be realized, and the test system can be applied to carrying out a space structure fatigue failure test, verifying a fatigue ultimate bearing capacity, and revealing a fatigue failure mechanism.

Description

technical field [0001] The invention relates to a multi-plane complex load loading test system and test method for a space structure, which is used to carry out research on failure modes and damage mechanisms of multi-plane loaded structures under the joint action of axial force, bending moment and torque, which belongs to civil and ocean engineering structures field of test technology. Background technique [0002] With the development of the economy and the progress of society, more and more large-scale, special-shaped, complex buildings and structures have appeared, and correspondingly more and more complex components have been produced. For example, the connection components in the space support system of large stadiums, the force transmission components in the transfer layer of super high-rise buildings, the connection components in the roof grid structure of airports, the multi-plane pipe nodes in the fixed foundation structure of offshore wind turbines, etc., the abov...

AI Technical Summary

Problems solved by technology

At present, there is still a lack of relevant test equipment in China to accurately simulate the complex stress state of the space structure, and carry out the safety evaluation and damage mechanism research of the space structure under complex load conditions

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