The calculation method and construction method of broken-line pile foundation structure and its foundation force

Abstract

The invention relates to a folding-line-shaped pile foundation structure and a foundation acting-force computing method of the folding-line-shaped pile foundation structure as well as a construction method of the folding-line-shaped pile foundation structure. The folding-line-shaped pile foundation structure comprises an inclined upper segment and a vertical lower segment, wherein the inclined upper segment is used for connecting an upper structure, the vertical lower segment is used for being buried underground, the upper end surface of the vertical lower segment is connected with the lower end surface of the inclined upper segment, a connecting line between the center of the upper end surface of the inclined upper segment and the center of the upper end surface of the vertical lower segment is a folding line, the intersection point of the projection extending line, on the upper end surface of the vertical lower segment, of the folding line and the connecting part of the folding line and the upper end surface of the vertical lower segment is a folding point, and the folding point is positioned at the lower part of the anchoring end of a connecting piece between the inclined upper segment and the upper structure and is positioned above the computed buried-depth ground of the vertical lower segment. According to the folding-line-shaped pile foundation structure, a horizontal force transmitted by the upper structure is counteracted by utilizing the folding-line-shaped structure of a pile foundation, so that the horizontal bearing force of the pile foundation is met, a method for increasing the pile diameter and the pile length is avoided, the usage amount of foundation steel bars is also decreased, and therefore the folding-line-shaped pile foundation structure is especially applicable to the pile foundation which has certain computed exposed height and a larger horizontal foundation acting force.

Description

technical field [0001] The invention relates to a foundation structure in the construction field, in particular to a zigzag pile foundation structure and a calculation method and a construction method for foundation force. Background technique [0002] The pile foundation can carry relatively large vertical force of the foundation, but the horizontal bearing capacity of the pile foundation is generally relatively low. The foundation meets the bearing capacity requirements, but increasing the pile diameter or increasing the pile depth will increase the cost of the foundation project. It is also possible to use inclined pile foundations like port projects, but the construction equipment for inclined pile foundations is more complicated and the construction cost is also relatively high. . Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a broken-line pile foundation structure and its foundatio...

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Problems solved by technology

[0002] The pile foundation can carry relatively large vertical force of the foundation, but the horizontal bearing capacity of the pile foundation is generally relatively low. The foundation meets the bearing capacity requirements, but increasing the pile diameter or increasing the pile depth will increase the cost of the foundation project. It is also possible to use inclined pile foundations like port projects, but the construction equipment for inclined pile foundations is more complicated and the construction cost is also relatively high.

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