Method for microwave treatment of red-layer mudstone pile foundation pile bottom sediments

Abstract

The invention discloses a method for microwave treatment of red-layer mudstone pile foundation pile bottom sediments. The method comprises the following steps that: firstly, according to a construction design scheme, a pile hole machine is used for punching a hole reasonably according to specifications; then, a microwave generating device, a horizontal waveguide tube, a vertical waveguide tube anda microwave probe are connected, and the vertical waveguide tube is placed and fixed in a pile hole; and finally, a power supply is switched on, the microwave generating device is generated, and microwaves is output by the microwave probe to treat the red-layer mudstone pile foundation pile bottom sediments. In addition, other methods are used for further treating the sediments after microwave treatment. According to the treatment method for the red-layer mudstone pile foundation pile bottom sediments, the principle is that microwave energy is converted into heat energy, the water content ofthe red-layer mudstone sediments is rapidly reduced, the mechanical strength and the water stability of the red-layer mudstone sediments are improved, and therefore the purposes of controlling pile body sedimentation and improving the pile foundation bearing capacity are achieved. Compared with a traditional pile foundation sediment treatment method, the method has the advantages of being simple in operation steps, short in construction period, low in cost and the like.

Description

technical field [0001] The invention relates to the field of pile foundations of construction engineering, highway engineering, railway engineering, etc., in particular to a method for microwave treatment of sediment at the bottom of pile foundations of red bed mudstone pile foundations. Background technique [0002] In recent years, a large number of high-rise and super-high-rise urban housing buildings have emerged in our country. At the same time, more and more pile foundations are used in engineering. Red beds are widely distributed in my country, especially in the Sichuan Basin. Red bed mudstones span Chengdu, Leshan, Meishan, Lushan, Baoxing, Dayi, Mianzhu, Pujiang, Xinjin, Pengshan, Panzhihua and other large and medium-sized cities. With the increasing number of railways, highways, and bridges, pile foundations are widely used in the foundations of high-rise and heavy buildings (structures). Therefore, most of the pile foundation works will pass through the distribut...

AI Technical Summary

Problems solved by technology

The method of rotary drilling, drilling and hole cleaning adopts the method of mechanical slag removal to achieve the sediment thickness specified in the specification, but the bottom of the hole cannot be completely cleaned, which is a waste of time and high cost

The water pump hole cleaning method will damage the structure of the pile foundation to a large extent, causing the structure of the pile foundation to be unstable and affecting the quality of pile driving

The vacuum suction mud method requires few equipments, is easy to operate, and the hole cleaning is relatively thorough, but it is easy to damage the stability of the pile foundation. There is an urgent need for a fast and economical red bed mudstone pile bottom sediment treatment method in engineering

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