Non-disturbance compressive static load test system of foundation base

Abstract

The invention discloses a non-disturbance compressive static load test system of a foundation base. The non-disturbance compressive static load test system comprises a pressure bearing platform, two rotating platforms, two outer boats, a longitudinal motion and lifting mechanism, two inner boats and a transverse motion mechanism, wherein transverse motion rails are transversely arranged on the lower surfaces of the rotating platforms; two transverse motion cylinders are positioned in the transverse motion rails; the inner ends of the transverse motion cylinders are close to the centers of the rotating platforms, and are connected with the rotating platforms; telescopic rods at the outer ends of the transverse motion cylinders are connected with transverse motion trolleys on the two sides; the tops of inner boat struts are connected with the transverse motion trolleys; and the bottoms of the inner boat struts are connected on inner boat bodies. According to the non-disturbance compressive static load test system, during transverse motion, the inner boat transverse motion trolleys move under the rotating platforms in a suspension manner, the rails corresponding to the two inner boats are in the same plane, and the motion resistance caused by uneven ground is avoided; and the inner boats can be separated, the lengths of the rotating platforms are decreased while a larger interval between the inner boats is achieved and a non-disturbance effect is achieved, and the rotating power is higher and more efficient.

Description

technical field [0001] The invention relates to the field of foundation detection, in particular to a non-disturbance walking type foundation anti-compressive static load test system. Background technique [0002] The anti-static static load test of the foundation (hereinafter referred to as the static load test) is a test method that applies pressure step by step on the top surface of the inspected part and measures its settlement over time to determine the bearing capacity. It is the most recognized test method in foundation testing. Intuitive, reliable, and above all traditional methods. [0003] The applicant's published patent application document "A Ground Foundation Compressive Static Load Test System" (application number: 201410146815.0), such as figure 1 As shown, the longitudinal movement of the long ship and the lateral displacement of the inner ship are used to approach and align the fixed-point piles, and the main measuring cylinder installed in the middle of t...

AI Technical Summary

Problems solved by technology

Since the inspection site cannot be completely flat, the tracks corresponding to the two inner ships are not on the same plane, and the actual movement resistance is relatively large, and in extreme cases, it may not be possible to move laterally

At the same time, the inner ship safety buttress is connected with the inner ship lateral movement trolley, and the center of gravity changes with the lateral movement. When the inner ship is lifted, it will be tilted and affect walking

Furthermore, the distance between the inner ships is not variable. In order to reduce the disturbance of the external ballast to the inspected part, the code requires that the distance from the edge of the ballast platform pier to the center of the inspected part shall not be less than 4 times the diameter of the inspected part and greater than 2 meters, taking the commonly used pipe pile with a diameter of 0.6 meters as an example, the distance between the two inner ships is always not less than 4.8 meters, the length of the rotating platform must also be adapted to it, and the position of the sliding block of the rotating platform is far from the center line of the platform , the effective component of the rotational power mainly provided by the slider of the rotating platform is very small, which makes the rotation difficult. At the same time, because of the need for rotation control, the inner ship is set to form a certain gap between the hypotenuse and the outer ship, and the length of the rotating platform is correspondingly lengthened.

Therefore, in the existing technical solutions, the problem of the distance between inner ships is avoided, that is, the disturbance to the inspected part cannot be avoided

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