Mobile fabricated beam erection system for support method beam splicing of prefabricated segmental beams

Abstract

The invention discloses a mobile fabricated beam erection system for support method beam splicing of prefabricated segmental beams. The mobile fabricated beam erection system comprises gantry crane track foundations, a gantry crane, a lifting device for lifting the beams, a support system, steel rails and slipping wire jacks. According to the mobile fabricated beam erection system for support method beam splicing of the prefabricated segmental beams, positioning of the segmental beams can be quickly and effectively adjusted through the combination of "gantry crane + lifting device", and quicksupport removal can be performed through the slipping wire jacks; the slipping wire jacks, the steel rails and the support system together form a slipping system, and movement of beam bodies in trackscan be completed through temporary tensioning; a rotatable movable head is arranged to enable the mobile fabricated beam erection system to be adapted to the slope of different beams through rotation; a lifting system is formed by screw rods, screw rod sleeving heads and clamping boards, and the elevation of the beams can be controlled by adjusting the length, protruding above the screw head sleeving heads, of the screw rods; through the special structures of the slipping wire jacks, the time consumed by wet joint construction and external prestress tensioning can be saved, less dependence onequipment is achieved, and a plurality of working faces can be arranged at the same time.

Description

technical field [0001] The invention belongs to the technical field of assembly of prefabricated segmental beams, and in particular relates to a mobile assembly type beam erecting system used for prefabricated segmental beam brackets. Background technique [0002] The use of bridge erecting frame girders includes the placement of bridge erecting machines, lifting beams, gluing, temporary tensioning, wet joint construction, external prestressed tensioning, and passing holes; the construction period is generally 6-7 days. The equipment is highly dependent. In severe weather such as rain and snow, the wet joint strength cannot meet the construction conditions on time, which affects the construction period, and night construction is more dangerous. Therefore, it is necessary to use the bracket method to erect the beam, but the existing prefabricated beam erection system for the bracket method is not mature enough, which makes the efficiency low. [0003] In the process of splic...

AI Technical Summary

Problems solved by technology

[0002] The use of bridge erecting frame girders includes the placement of bridge erecting machines, lifting beams, gluing, temporary tensioning, wet joint construction, external prestressed tensioning, and passing holes; the construction period is generally 6-7 days. The equipment is highly dependent. In bad weather such as rain and snow, the wet joint strength cannot meet the construction conditions on time, which affects the construction period. Night construction is more dangerous

Therefore, it is necessary to use the bracket method to erect the beam, but the existing prefabricated beam erection system for the bracket method is not mature enough, making the efficiency low

[0003] In the process of splicing beams by the bracket method, since the beam body is divided into several segments, several segments need to be assembled into a whole during construction. In this process, splicing glue needs to be applied, and there is a 30cm reserved seam between the beam bodies. At this time, it is necessary Segmental beams slip in a small range, and the alignment accuracy of the beams is too high during gluing. At this time, it is necessary to fine-tune the elevation after the alignment of the beams is completed. , the existing technology cannot solve this kind of problem very well

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