Foundation pile bearing capacity test displacement testing device and method

Abstract

The invention discloses a foundation pile bearing capacity test displacement testing device, and relates to the technical field of foundation pile bearing capacity testing. The foundation pile bearing capacity test displacement testing device comprises a sealed first container, a sealed second container and a differential pressure transducer; a filling hole capable of being sealed is formed in the second container, and the bottoms of the second container and the first container are communicated; and one end of the differential pressure transducer is connected with the top of the first container, and the other end of the differential pressure transducer is connected with the top of the second container. By means of the foundation pile bearing capacity test displacement testing device, a datum line beam is not needed, distribution and construction are simple, influences of human factors can be removed, the testing errors are reduced, and the measurement accuracy is improved.

Description

Technical field [0001] The invention relates to the technical field of foundation pile bearing capacity detection, in particular to a displacement test device and method for foundation pile bearing capacity test. Background technique [0002] In the process of foundation pile bearing capacity test, the accurate test of foundation pile displacement is a very important work content. Foundation pile displacement test is mainly based on the load-displacement curve to determine whether the bearing capacity of the foundation pile meets the design requirements. [0003] The commonly used displacement test method in the bearing capacity test of foundation piles in the prior art adopts a settlement rod. One end of the settlement rod is connected to the test point of the foundation pile, and the other end is extended above the ground, and the settlement rod is connected to a displacement test instrument for The displacement of the settlement rod is detected, and the displacement of the found...

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Problems solved by technology

[0004] On the other hand, in order to obtain the displacement of each measuring point of the foundation pile directly according to the displacement of the settlement rod, it is necessary to install the displacement test instrument vertically on the settlement rod, which makes the installation verticality of the displacement test instrument very high and increases the difficulty of construction. Affected by human factors, it is easy to increase the test error and affect the accuracy of the measurement

Furthermore, since the displacement of the foundation pile requires high test accuracy, the range of the displacement sensor generally does not exceed 50mm. In order to adapt to the situation of large changes in the displacement of the foundation pile, the position of the displacement sensor needs to be adjusted many times during the test, which is cumbersome to operate. and lead to lower measurement accuracy

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