Deep load testing device

Abstract

The invention discloses a deep load testing device. The deep load testing device comprises a pressure bearing plate arranged at the bottom of a foundation pit; a force transfer column and displacement rods are arranged above the pressure bearing plate; the displacement rods are positioned around the force transfer column; a displacement rod fixed plate is arranged at the top ends of the displacement rods; an automatic numerical control pressing device is arranged at the top end of the force transfer column; a protection arm sleeve is arranged in the foundation pit; the protection arm sleeve is placed after manual or mechanical poring; a disturbance soil layer at the bottom of a well is manually removed for leveling; medium-coarse sand is paved for leveling; after the pressure bearing plate is connected with the displacement rods, the pressure bearing plate is mounted in a testing position at the bottom of the well; after the pressure bearing plate is placed, the force transfer column is put down, and installation is finished through total engaged connection with a conical force transfer column connecting cap; and the deep load testing device provides powerful guarantee to the test safety and precision.

Description

technical field [0001] The invention relates to the technical field of foundation bearing capacity detection, in particular to a deep load test device. Background technique [0002] The existing deep load test device is to put the pressure bearing plate and the force transmission column into the hole after the hole is formed manually or mechanically. For the stratum that passes through, the problems of hole wall collapse and hole wall necking often occur; with As the depth of the test increases, the requirements for the stability of the hole wall become higher and higher, and the accuracy of the subsidence monitoring of the bearing plate becomes lower and lower, resulting in a decrease in the accuracy of the test results, thereby affecting the authenticity of the bearing capacity of the foundation. Contents of the invention [0003] In order to solve the above problems, the present invention provides a deep load test device, which can be applied to various formations, prev...

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Problems solved by technology

[0002] The existing deep load test device is to put the pressure bearing plate and the force transmission column into the hole after the hole is formed manually or mechanically. For the stratum that passes through, the problems of hole wall collapse and hole wall necking often occur; with As the depth of the test increases, the requirements for the stability of the hole wall are getting higher and higher, and the accuracy of the subsidence monitoring of the bearing plate is getting lower and lower, resulting in a decrease in the accuracy of the test results, which affects the authenticity of the bearing capacity of the foundation.

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