Large-area ultra-soft foundation settlement monitoring device and method

Abstract

The invention provides a large-area ultra-soft foundation settlement monitoring device and method. The device comprises a recovery peg, a settlement plate and a leveling rod. The settlement plate is placed on a foundation surface layer to be measured. The leveling rod is fixed to the settlement plate. The face which is provided with scales of the leveling rod faces towards the recovery peg. The elevation of the top of the recovery peg is higher than a bottom scale mark of the leveling rod. Scale changes of the leveling rod are measured and read through an observation instrument erected on the recovery peg so as to obtain the settlement amount of the foundation surface layer. The device has the advantages of simple structure, convenient operation, high measuring precision and the like, and manual rod support and station moving are not needed, so that the labor cost is greatly lowered, the working efficiency is improved, and the device has high application value.

Description

technical field [0001] The invention relates to the technical field of soil settlement monitoring, in particular to a large-area ultra-soft foundation settlement monitoring device and monitoring method. Background technique [0002] With the acceleration of my country's coastal development process, large-scale land reclamation on coastal beaches has become an important way for coastal cities to solve the shortage of land resources. Usually, the shallow surface layer of the surrounding area is newly deposited or newly filled ultra-soft soil with extremely high water content, basically no bearing capacity, and unable to meet the requirements of construction machinery entering the site. Therefore, the foundation must be reinforced before the development and construction of the surrounding area. The land obtained from sea reclamation can be used as construction land, and settlement monitoring is required in the process of foundation reinforcement to understand the compression an...

AI Technical Summary

Problems solved by technology

However, this method has many shortcomings in the settlement monitoring of large-area ultra-soft foundations: 1) The engineering properties of ultra-soft soil are extremely poor, and there is no relatively stable tripod erection platform, and settlement monitoring cannot be realized before the ultra-soft soil has a certain bearing capacity; 2) ) The artificial ruler needs to be close to the settlement measuring point, and the disturbance to the ultra-soft soil will cause the settlement plate to overturn. The test is very difficult and there are potential safety hazards; Low work efficiency, poor observation accuracy, and easy damage to the membrane surface and drainage filter pipe, which interferes with the construction

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