A lever loading system and assembly method

Abstract

The invention relates to the field of civil engineering test equipment, in particular to a lever loading system and an assembling method. The ground anchor beam of the lever loading system provided by the present invention is connected with the floor anchorage, the main beam is arranged at a position parallel to the ground anchor beam and higher than the ground anchor beam; Lever, a plurality of levers are parallel to each other, and each lever is perpendicular to the main beam; one end of the lever is flexibly connected to the ground anchor beam through a steel wire, the other end is hung with a hanging basket, and the hanging basket is equipped with weights; the invention also provides The assembly method of the lever loading system is described. The lever loading system and assembling method have the advantages of simple loading, occupying less structural loading space, and adapting to the simulation of large uniform loads, etc., safe, reliable, and high stability, and can realize multi-point arrangement loading for the main beam, and realize fine and graded loading. , more accurately simulate the force pattern of the main beam, and it is convenient to observe the displacement of the main beam and the cracks on the side during the test process.

Description

technical field [0001] The invention relates to the field of civil engineering test equipment, in particular to a lever loading system and an assembly method. Background technique [0002] Civil engineering test research is still an indispensable part of civil engineering. The task of civil engineering test is to analyze various parameters related to the working performance of the structure under the action of load or other factors on the test object, with instruments and equipment as the object, and various test techniques as means, so as to analyze Evaluate the working performance of the structure, make a correct estimate of the bearing capacity of the structure, and provide a reliable basis for the research and development of the calculation theory of the structure. [0003] In civil engineering test research, for the simulation of uniform load, heap load and equivalent concentrated load are often applied. When the uniform load is small, heap load is often used; when the...

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Problems solved by technology

[0004] The traditional lever loading method is that the middle fulcrum of the lever is pressed on the upper part of the structure, so the loading height of the lever increases or the clear height under the structure decreases, occupying the upper and side space of the structure, which is not convenient for the observation of the side cracks of the structure, and cannot Visually observe the displacement of the main beam; when the middle fulcrum of the lever is in point contact with the backing plate on the main beam, the lateral instability of the lever is easy to slip, and the tail end needs a strong rigid anchor, which makes the whole system of the lever bulky; when the main beam When the lateral width of the upper edge of the upper edge is wider, in order to facilitate the loading of the lever, the length of the lever must be lengthened, which makes the entire lever system complicated and expensive

For the large-displacement system structure, the displacement of the end of the lever is relatively large, and the inclination is relatively severe. It is difficult to ensure the loading ratio of the lever accurately, and the hanging basket at the end may be grounded, but it is difficult to pre-lift the lever.

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