Ultra-deep soft soil pile integral construction method based on high-precision information monitoring

Abstract

The invention relates to an ultra-deep soft soil pile integral construction method based on high-precision information monitoring. The integral construction method mainly comprises the following construction steps of site hardening, steel pile splicing, stud connecting, steel casing arranging, rebar cage lowering, steel pile cage frame assembling, steel pile hoisting and lowering, steel pile position adjusting, steel pile perpendicularity adjusting and the like. According to the integral construction method, jacks for adjusting the horizontal position and the vertical position are separately arranged on the upper and lower ends of a steel pile cage frame, and the two kinds of jacks both adopt a numerical control mode; during the whole construction lowering process of a steel pile, the horizontal position and perpendicularity of the steel pile can be adjusted through the jacks; the jacks are all arranged on the steel pile cage frame which is provided with jack placement plates through welding, so that the jacks cannot move casually during the construction process, and construction efficiency and construction quality are ensured; the construction method is high in construction speed and good in construction quality; the position and perpendicularity of the steel pile can be correctly and conveniently adjusted; adjustment on the position of the steel pile in a reverse building method can be effectively controlled; construction is convenient; information monitoring construction can be realized; and the ultra-deep soft soil pile integral construction method has good application prospect.

Description

technical field [0001] The invention relates to an integrated construction method of ultra-deep soft soil piles, in particular to an integrated construction method of ultra-deep soft soil piles based on high-precision information monitoring. Background technique [0002] The reverse method provides technical support for the development of underground space. The reverse method information construction technology, the column wall settlement control technology, the reverse excavation technology, the reverse method column-beam-slab and column-wall connection technology, etc., have laid a solid foundation for the promotion of the reverse method technology. necessary technical foundation. Compared with the traditional open method, the reverse construction method has the advantages of reducing the deformation of the foundation pit, saving support costs, and shortening the construction period. It is an energy-saving and environmentally friendly green construction method. [0003] M...

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Problems solved by technology

[0003] Most domestic reverse engineering projects are still limited by construction technical conditions. For example, the depth of the foundation pit of the project is not more than 20m, and the number of underground reverse structure layers is mostly less than 3 floors. There are load restrictions, etc.

At the same time, super-large and ultra-deep foundation pits are more and more common in reverse excavation and construction, and the design requirements for reverse support piles are also gradually increasing. Such high-precision steel column construction requires the verticality of the lower support pile to reach 1 In addition to the accuracy of / 300~1 / 200, there must be a set of mature, efficient and stable vertical adjustment methods and equipment. The traditional construction method uses an inclinometer to adjust the verticality of the steel column. This method has many measurement points and is subject to Affected by many factors, it is impossible to achieve high precision, and more importantly, it is time-consuming and labor-intensive, and the efficiency is very low

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