Rapid plate load testing instrument

Abstract

The invention discloses a rapid plate load testing instrument which comprises a testing bridge and a bearing plate, wherein a pressure measuring device is arranged on the bearing plate; a jack is arranged on the pressure measuring device; a displacement measuring device is arranged on the testing bridge; probes on the displacement measuring device are in contact with one surface of the bearing plate; the pressure measuring device and the displacement measuring device are connected with a data processing device through conducting wires respectively; a bracket is arranged on the testing bridge; the displacement measuring device is mounted on the bracket; the jack comprises an oil cylinder; the oil cylinder is connected with a manual pump; a control value is arranged on the oil supply pipeline of the manual pump, and connected with the data processing device through a conducting wire; the upper surface of the bearing plate is horizontal, and a spirit level is arranged on the upper surface of the bearing plate; the lower surface of the bearing plate is a slope of 1-6 degrees; the data processing device can be utilized for acquiring testing data from a sensor and controlling open-close of the control valve on the jack. The rapid plate load testing instrument has the advantages of being high in mounting speed, simple and convenient to operate, and accurate and objective in result; meanwhile, the testing period is shortened, and the work intensity of testing personnel is reduced.

Description

technical field [0001] The invention relates to a detection device, in particular to a fast flat load tester. Background technique [0002] Plate load test is a common method used to detect the quality of subgrade compaction, mainly including foundation coefficient K30 test and secondary deformation modulus Ev2 test. The traditional plate load test method is to judge the soil compaction quality according to the relationship between load and subsidence by loading or unloading plates with different diameters multiple times. The use of traditional testing instruments shows certain shortcomings. On the one hand, due to the consideration of drainage needs in the design of the roadbed, a certain slope of drainage slope will be made from the center line of the line to both sides, such as 2%, 4%. In order to ensure the test When testing the level of the bearing plate, the test surface is usually dug to the level before the test, or the test surface is adjusted to the level with dry...

AI Technical Summary

Problems solved by technology

At present, because the pressure cannot be kept constant in the test, the pressure is continuously replenished manually

The above two aspects will result in inaccurate results of the plate load test and increase the influence of human factors in the test process.

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