Vibration isolation pile foundation of variable cross-section of pier and construction method of vibration isolation pile foundation

Abstract

The invention discloses a vibration isolation pile foundation of a variable cross-section of a pier and a construction method of the vibration isolation pile foundation. The vibration isolation pile foundation comprises a steel pile, an upper segment, a middle segment and a lower segment, wherein the upper segment, the middle segment and the lower segment successively surround and are arranged onthe periphery of the steel pile from top to bottom; the upper segment successively comprises three vibration isolation layers, a first concrete layer, a first corrugated steel layer and a first concrete retaining wall from inside to outside, the middle segment successively comprises a vibration isolation layer, a second concrete layer, a second corrugated steel layer and a second concrete retaining wall from inside to outside, the lower segment successively comprises a third concrete layer, a third corrugated steel layer and a third concrete retaining wall from inside to outside, and the bottom of the lower segment is enclosed. The foundation has the advantages that construction is convenient, and the cost of the pier is reduced; the single pile structure form of the pier is simple, the force transferring route is clear, and displacement vibration of the pier top adapts to the bending moment character gradually reduced from top to bottom; when vibration waves are diffused to surrounding soil by the vibration isolation layers, partial vibration energy is consumed.

Description

technical field [0001] The invention belongs to the technical field of bridge pile construction, and in particular relates to a bridge pier variable-section vibration-isolation pile foundation and a construction method thereof. Background technique [0002] With the development of bridge facilities, the structure and construction environment of bridges are becoming more and more complex. Therefore, more and more stringent requirements are put forward for the stability of bridge piles. Existing bridge pier foundations are usually filled with reinforced concrete. The bottom of the above structure has poor vibration resistance. When the upper structure of the bridge shakes, it is difficult for the pier to provide sufficient vibration damping force, resulting in a decrease in bridge stability. Contents of the invention [0003] The purpose of the present invention is to provide a bridge pier variable section vibration isolation pile foundation and its construction method accor...

AI Technical Summary

Problems solved by technology

Existing pier foundations are usually filled with reinforced concrete. The bottom of the above-mentioned structure has poor vibration resistance. When the upper structure of the bridge shakes, the pier is difficult to provide sufficient vibration damping force, resulting in reduced bridge stability.

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