Novel flexural member sustained loading test device based on secondary level effect

Abstract

The invention relates to a novel flexural member sustained loading test device based on a secondary level effect. The device comprises an inclined strut (1), a built-in beam (2), a screw (3), a lever beam b (4), a lever beam a (5), a distribution beam (6), a weight hanging plate (7), a steel plate b (8), a dialgage bracket (9), an inclined strut b (10), a flexural test piece (11), a steel plate a (12), a counterforce beam (13) and a static data acquisition system. The weight hanging plate (7) is hung at one end of the lever beam b (4), the other end of which is fixed on the steel plate b (8). The lever beam a (5) is arranged between the steel plate b (8) and the steel plate a (12), and the flexural test piece (11) is disposed on the counterforce beam (13). Compared with the prior art, the device of the invention has the advantages of convenient assembling, strong applicability, stable loading performance, etc., and can be conveniently applied to flexural member long-term performance tests as well as flexural member durability tests under load-environment combined action.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a test device capable of applying continuous load to a flexural member, which provides a feasible loading tool for studying the durability of the flexural member under the coupling action of different environments and loads. Background technique [0002] The development of continuous loading devices for flexural members is helpful for the following two types of tests: one is the long-term performance test of flexural members; the other is the durability test of flexural members under the joint action of load and environment. [0003] Commonly used loading methods for long-term performance tests of flexural members include heap loading method, lever method, jack loading method and screw method. The heap loading method has a stable load, but due to space constraints, a large number of heavy objects are required, and the loading level is limited. The jack loading method...

AI Technical Summary

Problems solved by technology

[0004] The research on the performance degradation of flexural components under the action of the environment mostly adopts the method of deteriorating first and then loading, which is inconsistent with the joint action of the two in actual engineering.

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