Chain type cutting ground breaking equipment capable of being fixed to open caisson and construction method of chain type cutting ground breaking equipment

Abstract

The invention discloses chain type cutting ground breaking equipment capable of being fixed to an open caisson and a construction method of the chain type cutting ground breaking equipment. The water jetting pipe is buried in the outer wall of the open caisson and communicates with an external high-pressure water source and the bottom of the open caisson; the cutting device comprises a fixed bracket which is fixed on the inclined surface of the open caisson blade foot; the rotating shaft is rotationally connected with the fixed bracket; the reamer is fixed on the rotating shaft and is provided with a water jetting hole communicated with the outside; the water jetting channel is used for communicating the water jetting hole with the water jetting pipe; and the chain is used for driving the rotating shaft to rotate under the driving of the cutting equipment main machine. The cutting device is arranged at the bottom of the open caisson blade foot and matched with the water jetting pipe and the chain type transmission mechanism on the outer wall of the open caisson, the soil body below the slope of the blade foot can be accurately cut, the problem that the open caisson is difficult to sink due to the fact that the soil body in the soil taking blind area cannot be effectively damaged is solved, and meanwhile excessive excavation of the soil body below the open caisson is avoided; and the open caisson construction quality and construction efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of caisson construction. More specifically, the present invention relates to a chain-type cutting earth-breaking equipment that can be fixed on a caisson and a construction method thereof. Background technique [0002] With the development of long-span bridge construction across rivers and seas in China, caisson foundations have also been widely used, and are developing in the direction of deeper burial depth, larger structural dimensions, and more complex geological conditions. However, in the process of sinking of large caisson, it is often accompanied by difficulties in sinking and limited means of assisting sinking. It is necessary to gradually weaken the soil at the blade foot, so that the caisson squeezes the soil and sinks; Existing, making the effective weakening of the blade foot soil and avoiding the deep excavation of the bottom of the well are contradictory, and the subsidence control in the con...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a chain-type cutting earth-breaking equipment that can be fixed on the caisson and its construction method. By setting the cutting device at the bottom of the caisson blade foot and cooperating with the water jet pipe and the chain-type transmission mechanism on the outer wall of the caisson, it can cut precisely The soil below the slope of the blade foot solves the problem that the soil in the blind area cannot be effectively destroyed and the caisson is difficult to sink, and at the same time avoids excessive excavation of the soil below the caisson, improving the construction quality and efficiency of the caisson

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