Large-sized concrete cylindrical structure whose wall end possesses excavating device and sinking method

Abstract

The present invention relates to a large concrete cylindrical structure whose wall end is equipped with an excavation equipment and its sinking method. The cylindrical wall o f the bottom end of the large concrete cylindrical structure to be sunk is made into the cylinder feet which are arranged along the peripheric direction and formed into an inverted bellmouth cavity form, on the cydinder the the vertical through holes of high-pressure water, air pipe and mud-discharging pipe are alternatively arranged, and its circular excacation equipment is formed from vertical connecting side frames positioned at two sides and horizontal net-like steel blades positioned on the bottom portions of the side frames. Said invention also provides its sinking method by utilizing net-like steel blades, high-pressure water and air pipe and mud-discharging pipe.

Description

technical field [0001] The invention relates to a large concrete cylinder structure with an excavation device at the wall end and a sinking method. The utility model relates to a construction method for a structural part and a sinking large concrete cylinder structure in the field of port, coast and bridge engineering. Background technique [0002] Large concrete cylindrical structures can be used to build piers, breakwaters, and bridge piers in rivers and oceans. At present, there are three methods that can be implemented to sink a large concrete cylinder structure into the foundation soil: one is to excavate the foundation pit, put the cylinder structure in and then backfill it, or hollow out the inside of the cylinder and The soil at the bottom of the cylinder wall is allowed to sink. This method requires a large amount of engineering, takes a long time, and is expensive; another method is to add ballast on the top of the cylinder, such as vacuum...

AI Technical Summary

Problems solved by technology

At present, there are three methods that can be implemented to sink a large concrete cylinder structure into the foundation soil: one is to excavate the foundation pit, put the cylinder structure in and then backfill it, or hollow out the inside of the cylinder and The soil at the bottom of the cylinder wall is allowed to sink. This method requires a large amount of engineering, takes a long time, and is expensive; another method is to add ballast on the top of the cylinder, such as vacuum ballast and water ballast. The sinking depth of the cylindrical structure is limited, and the deviation is difficult to control and adjust; the third method is to destroy the soil around and at the bottom of the cylindrical structure through vibration to make the cylinder sink. This method requires a large power vibration equipment

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