Swivel construction frame type pier and construction method thereof

Abstract

The invention relates to a swivel construction frame type pier and a construction method thereof. The swivel construction frame type pier comprises a swivel part and a non-swivel part. The swivel partsequentially comprises a first pile foundation, a pier bottom swivel system, a swivel pier column and a swivel cross beam from bottom to top. The swivel pile column and the swivel cross beam are fixedly connected and form an inverted-L-shaped structure. The pier bottom swivel system sequentially comprises a lower rotating disc, a spherical hinge and an upper rotating disc from bottom to top. Thespherical hinge comprises a lower spherical hinge and an upper spherical hinge. The lower spherical hinge and the lower rotating disc are fixedly connected. The upper spherical hinge and the upper rotating disc are fixedly connected. The center of the spherical hinge is located on the gravity center line of a rotating part formed by the upper spherical hinge, the upper rotating disc, the swivel pile column and the swivel cross beam. The swivel cross beam and the non-swivel part are combined through swivel construction to form a whole. According to the swivel construction frame type pier, swivel construction of the frame type pier can be achieved through self balance, the construction speed is high, and the interference with normal operating of existing lines is small.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a swivel construction frame type pier and a construction method thereof. Background technique [0002] Newly built railways often use frame piers to span existing lines. Frame piers are mature in technology, fast in construction, small in investment, and easy to use standardized beams for the superstructure. [0003] At present, the construction methods of frame piers mainly include: [0004] (1) Set up the cast-in-place construction of the bracket; [0005] (2) The beam is prefabricated, pushed into place, and then connected with the pier column to form a whole; [0006] (3) The beam is prefabricated, hoisted in place, and then connected with the pier column to form a whole. [0007] The problems of existing construction methods are: [0008] (1) The cast-in-place construction of the bracket needs to build a bracket across the existing line, which has a great impact on the ...

AI Technical Summary

Problems solved by technology

[0008] (1) The cast-in-place construction of the bracket needs to build a bracket across the existing line, which has a great impact on the existing line and a long construction period;

[0009] (2) The prefabricated beam jacking construction needs to cross the existing line to build a jacking slideway. The construction process needs to be pushed first and then dropped, which will interfere with the operation of the existing line for a long time;

[0010] (3) During the hoisting and assembling process of prefabricated beams, the existing lines are live, which poses a safety risk. The beams are easy to swing during the hoisting process, and it is not easy to control the positioning of the beams. Especially when crossing the existing high-speed railway, the height and span of the frame pier are large, and lifting equipment is required With large lifting capacity and boom length, the safety risk is prominent

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