An Inflatable Multi-Point Displacement Meter Anchor Head for Soft Ground

Abstract

The invention relates to an inflatable type multipoint displacement meter anchor head for soft soil stratums. The anchor head comprises a plurality of inflatable type anchoring heads, a hollow center pipe and high pressure inflatable pipes with the equal number as the number of the inflatable type anchoring heads, airbags are arranged in the inflatable anchoring heads, and triangular anchor claws are arranged outside the inflatable anchoring heads. The upper end and the lower end of each inflatable type anchoring head are provided with an upper connecting sleeve and a lower connecting sleeve respectively, the hollow center pipe sequentially penetrates through all the inflatable type anchoring heads and is connected with the upper connecting sleeves and the lower connecting sleeves on all the inflatable type anchoring heads respectively. One ends of the high pressure inflatable pipes are connected with a ground high pressure inflatable device, and the other ends of the high pressure inflatable pipes penetrate through the hollow center pipe and go deep into the airbags in all the inflatable type anchoring heads. Compared with the prior art, the inflatable type multipoint displacement meter anchor head for the soft soil stratums has the advantages of being large in measuring range, high in precision, capable of not being disturbed by construction in the measuring process, free of manual measuring errors, safe in construction, simple in mounting, convenient to measure, high in working efficiency and the like.

Description

technical field [0001] The invention relates to an anchor head of a multi-point displacement gauge, in particular to an anchor head of an inflatable multi-point displacement gauge used in soft ground. Background technique [0002] The biggest feature of construction projects in soft soil areas is that soft soil has the characteristics of "three highs and one low", that is, high water content, high compressibility, high thixotropy and low strength. Therefore, how to accurately monitor the soil during construction The deformation of the body is related to the safety of the entire project, and it is also the top priority in the project. [0003] At present, in the process of engineering construction, the anchor heads of soil displacement meters in soft soil areas generally use claw hook anchors, compressed wood anchors, grouting or anchoring agent bonded anchors, and open umbrella-shaped soil anchors. These anchoring methods are limited by the technical level of engineering co...

AI Technical Summary

Problems solved by technology

However, this patent is more suitable for anchoring in soil foundation pits and slope walls, and is not suitable for anchoring in water-rich and soft soil layers. If high-pressure grouting is used to open the anchor and cut into the wall of the anchor hole, it will cause damage to the soil structure. Destruction, affecting the accuracy of measurement data

[0006] Chinese patent CN207622U pipe seam anchor type multi-point displacement meter, the device includes pipe seam anchor head, pipe seam anchor head is a truncated cone-shaped anchor head with seam made of spring steel, and is equipped with an open tail ring and barbs, However, the anchor head is mainly used for geotechnical engineering of rock foundations, shafts, chambers and tunnel lights, and cannot be used for anchoring in soft strata.

This patent is suitable for the measurement of soft rock formations, coal bodies and soil layers, but it is not suitable for water-rich and weak soft formations, which may easily cause damage to the soil structure at the anchorage position, resulting in insufficient anchoring force of the soil mass and affecting the accuracy of displacement measurement.

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