Communicating pipe type static force level for measuring vertical displacement of structure

Abstract

The invention discloses a communicating pipe type static force level for measuring vertical displacement of a structure. The communicating pipe type static force level comprises a horizontal base (11), and a vertical base (10) vertical to the horizontal base, wherein the vertical base (10) is provided with a vertical communicating pipe (6) and two sets of inclined communicating pipes, and the bottoms of the vertical communicating pipe and the inclined communicating pipes are mutually communicated through a flexible pipe (14); the first inclined communicating pipe (71) and the second inclined communicating pipe (72) are staggered for a certain height; the inclined communicating pipes comprise a plurality of straight pipes, and flexible pipes (8) for communicating two adjacent straight pipes; included angles alpha between axial lines of all straight lines and the horizontal plane are equal. According to the communicating pipe type static force level, a conventional vertical communicating pipe is inclined to form a controllable angle with the horizontal plane and the vertical displacement of liquid level in the conventional vertical communicating pipe is amplified to the displacement of liquid level in the inclined communicating pipes along the axial lines of the inclined communicating pipes by virtue of trigonometric function relationship. The angle is regulated, and thus the amplification factor of the displacement of the liquid level can be controlled.

Description

technical field [0001] The invention relates to the technical field of displacement measurement of building structures, in particular to a high-precision communicating tube type static level for measuring the vertical displacement of structures. Background technique [0002] In deformation tests of large bridges and long-span housing structures, the displacement of the structure is an important parameter for evaluating the health and performance of the structure. The displacement of each point of the structure can not only directly reflect the vertical overall stiffness of the structure, the change of each point displacement, but also the change of the structural stiffness. Displacement measurement is considered to be the most important and accurate indicator for judging the structural condition in actual structural testing, and it can directly judge whether the structure is in a linear elastic or nonlinear state. [0003] There are many methods for structural displacement ...

AI Technical Summary

Problems solved by technology

The problem with many methods is that it is necessary to provide a reference support point for the measuring instrument under the structure, so the measurement method that does not require the above support point can be more widely used in some test situations with complex measurement conditions, such as rivers under bridges where dial indicators cannot be installed, etc. The measurement situation

[0006] Among the various commonly used methods for measuring the vertical displacement of structures under static load, none of them can simultaneously satisfy the requirements of low cost, convenient operation, high precision, and less environmental restrictions (especially those without support points for fixing instruments under the structural measurement point) situation) requirements

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