Shifted communicating vessel type settlement observation instrument

Abstract

The invention belongs to the technical field of measurement, and relates to a shifted communicating vessel type settlement observation instrument, which is used for wide-range continuous settlement observation of building and structure foundations, and particularly has an outstanding observation effect on nonuniform settlement occasions with large change rates. The settlement observation instrument is designed according to a principle that liquid levels at two ends have the same height, and comprises three functional parts, namely a riser, a channel guide pipe and a relative elevation measurement instrument; the channel guide pipe has ring stiffness and axial stiffness; the relative elevation measurement instrument comprises a ball-shaped device, a barrel-shaped device and a liquid guide pipe; the ball-shaped device is dragged to move in the channel guide pipe; a feedback system of the barrel-shaped device guides the barrel-shaped device to move in the riser to indirectly keep the relative liquid level height in the ball-shaped device unchanged; and by measuring the elevation of the liquid levels of the ball-shaped device at different horizontal positions and the like, a full-section settlement curve is drawn. The settlement observation instrument has a simple and novel structure, reliable principle, high observation accuracy and scientific and reliable data, is convenient to operate, saves labor and can automatically calculate and draw an observation structure.

Description

Technical field: [0001] The invention belongs to the technical field of measurement, and relates to a displacement connector type settlement observation instrument, which is used for large-scale continuous settlement observation of building and structure foundations, such as road or dam vertical and horizontal section settlement observation, especially for large change rate In the case of uneven settlement, its observation effect is more prominent. Background technique: [0002] At present, in road construction and various building infrastructure constructions, the equipment, instruments and observation techniques used to observe the settlement of building foundations mainly include two categories: single-point settlement observation and full-section settlement observation; single-point settlement observation There are mainly settlement plates, layered settlement instruments and water tube settlement instruments. The first two types of settlement instruments have high measur...

AI Technical Summary

Problems solved by technology

[0002] At present, in road construction and various building foundation constructions, the equipment, instruments and observation techniques used to observe the settlement of building foundations mainly include single-point settlement There are two types of observation and full-section settlement observation; single-point settlement observation instruments mainly include settlement plates, layered settlement instruments and water pipe settlement instruments. The first two types of settlement instruments have high measurement accuracy, but they need to be continuously connected, which greatly conflicts with the filling project. , the facilities are easily damaged, which has a negative impact on the local compaction, especially during the road operation stage, it is difficult for these instruments to continue to observe; the disadvantage of the water pipe settlement instrument is that the water pipe burial requirements are relatively high, and if the burial is not smooth, it is easy to form air bubbles to block the water pipe , so that the test cannot be carried out. At the same time, the water pipe type settlement instrument has high requirements for stability, and the disturbance during the construction process may easily cause the tilt of the settlement observation head; the typical equipment for full-section settlement observation is the inclinometer, which can be used without interference. Measure the settlement of the whole section, but its main disadvantages include: first, the axial stiffness is relatively large, and the inclinometer tube may "cut the soil", that is, when the settlement is large enough, because the stiffness of the tube is greater than the stiffness of the soil, the deformation of the inclinometer tube The deformation of the soil is not synchronized, and there are precision problems; the second is that when the settlement deformation is too large, the settlement tube may break, etc.

To sum up, the existing settlement observers generally have the disadvantages of complex structure and principle, high requirements for operating conditions, small application range, poor measurement stability, unsatisfactory observation effect, low test accuracy, high price, and inconvenient movement.

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