Shaped airbag and its test device and method for applying uniform load to the plate

Abstract

A shaped airbag and its test device and method for applying a uniform load to a plate, the shaped airbag includes an airbag body, the airbag body is provided with an external shaped bandage or / and an internal shaped bandage, and the outer shaped bandage is located on The outer wall of the airbag body, the inner shaped bandage is connected to the two inner walls of the airbag body oppositely arranged, the outer shaped bandage or / and the inner shaped bandage are respectively along the horizontal, vertical and vertical directions of the airbag body Extending and shaping the airbag body. The shaped airbag is applied to the uniformly distributed load loading test of the plate, and the principle of the same pressure transmitted by the closed gas to the shaped airbag in all directions is used to simulate the situation of the uniformly distributed load on the plate, and the use of the jack force device can be convenient Control the size of the load, and the bearing capacity of the slab can be measured through the test. The test results are accurate and scientific, and can provide a basis for the design of the slab.

Description

technical field [0001] The invention relates to the field of structural testing, in particular to a shaped airbag and a testing device and method for applying a uniform load to a plate by using the same. Background technique [0002] At present, for the test of uniformly distributed load on the slab, the method of stacking sandbags or counterweights is mainly used, or the method of loading with distribution beams. Although the former can better simulate the uniform load, the test speed is slow and the labor cost is high because the loading relies on artificial piles of sandbags or counterweights. When the required load is large, the height of sandbags or counterweights is very high Large, even if the stacking height is very large, it cannot meet the load loading requirements. At the same time, when the slab is damaged, the unloading speed is slow and it is prone to danger; the latter is loaded by the jack through the distribution beam, which cannot simulate the actual unifor...

AI Technical Summary

Problems solved by technology

Although the former can better simulate the uniform load, the test speed is slow and the labor cost is high because the loading relies on artificial piles of sandbags or counterweights. When the required load is large, the height of sandbags or counterweights is very high Large, even if the stacking height is very large, it cannot meet the load loading requirements. At the same time, when the slab is damaged, the unloading speed is slow and it is prone to danger; the latter is loaded by the jack through the distribution beam, which cannot simulate the actual uniform load. In this case, it can only be equivalent to a uniform load, and for two-way slabs, this method is not applicable. Therefore, the scope of application of the above two slab uniform load test methods is limited, and it cannot meet the requirements of the slab uniform load test. scientific research and engineering needs

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