Detecting device and method for static load test

Abstract

The invention provides a detecting device of a static load test. Liquid water can be utilized for serving as a balance weight to achieve detection while water injection. The device is characterized in that a base platform, a central stand column, side stand columns, inclined pull rods, horizontal pull rods and supporting legs are connected to form a supporting frame, a water bag is put into a supporting frame space, and is connected with a water conveying pipeline provided with an automatic valve, the water is injected into the water bag by controlling a control computer so as to provide the gravity for the static load test, and the control computer adjusts the water injection amount of the water bags through pressure sensors. The invention further provides a detecting method for the detecting device. The method comprises the steps that (1), the detection device is mounted on a jack and a detection instrument; (2), the water is injected into the detection device according to a first-stage load weight, and sedimentation is recorded; (3), water is continuously injected according to the loading weight and the number of steps, and a sedimentation value is recorded; (4), the highest loading weight is achieved, and sedimentation is recorded; and (5), the water is drained in a step-by-step manner according to the deloading weight and the number of steps for unloading, and sedimentation recording is carried out

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a detection device and a detection method for a static load test of foundation bearing capacity. Background technique [0002] In the process of building construction, it is necessary to test the bearing capacity of the foundation. Among them, the static load test is the most convenient and accurate test method. In the prior art, there are usually two ways to apply load to the pile foundation in the static load test, that is, anchor pile and surcharge. In the anchor pile test, a certain number of anchor piles are first driven on the periphery of the test piles, and the pull-out force of the anchor piles provides a counter force for the beam or bracket, which is transmitted to the jack to read the load test data. The disadvantage of this test device is that the requirement for the pullout resistance of the anchor piles is very high, and the number of anchor piles is large, so th...

AI Technical Summary

Problems solved by technology

The disadvantage of this test device is that it uses steel blocks or sandbags for counterweight, which is inconvenient for loading and unloading, and difficult for transportation, which increases the cost of the test.

At the same time, in the process of solid heaping, load eccentricity is likely to occur, resulting in system instability and potential safety hazards

In addition, in the utility model patent with the announcement number 2119443U and the application number 92203746.9, there is also a test method using liquid as the load counterweight. This method still adopts the traditional load transmission method, and the liquid container is huge and difficult to transport and deploy. , and the liquid for counterweight cannot be reused to cause waste

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