Nested standardized prefabricated assembled bent cap and construction method thereof

Abstract

The invention discloses a nested standardized prefabricated assembled bent cap and a construction method thereof. Comprising a prefabricated core block and a plurality of prefabricated nested blocks which are prefabricated and matched; the prefabricated core block is of a rectangular strip-shaped structure, and the three side faces in the length direction of the prefabricated core block are embedded into the embedding groove of the first prefabricated embedding block. The cross section of each prefabricated nesting block is of a concave strip-shaped structure, and an embedding groove penetrating through the two ends is formed in the middle of the surface of one side in the length direction; the embedded groove of each prefabricated nested block is matched with the shape of the previous prefabricated nested block or matched with the shape of the prefabricated core block. During construction, firstly, the prefabricated core block and the prefabricated nesting block are prefabricated, and then the prefabricated core block is hoisted; and after completion, connection of the prefabricated core block and the first prefabricated nesting block is achieved through a wet joint, and then connection of all the prefabricated nesting blocks is completed one by one. Standardized design of the cover beam is achieved, and the construction speed of the cover beam is increased.

Description

technical field [0001] The invention relates to the technical field of cover beam construction, in particular to a nested standardized prefabricated assembled cover beam and a construction method thereof. Background technique [0002] The prefabricated assembly construction of bridges avoids erecting brackets on site, and is an effective means to speed up construction, reduce on-site pollution, and achieve low-carbon construction. [0003] At present, the prefabricated assembly technology of bridges has gradually been recognized by all parties. The assembly technology of the bridge superstructure has been relatively mature, and there has been a lot of research on the assembly of the substructure in recent years, especially for the connection between the column and the platform, the column and the cover beam. There are many patents, and the grouting sleeve was invented. Connection, grouting metal bellows connection and other forms. However, less consideration is given to th...

AI Technical Summary

Problems solved by technology

[0005] Although the construction of this method can avoid the use of full-height brackets, the left section 2 of the prefabricated cover beam, the right section 3 of the prefabricated cover beam and the middle section 1 of the prefabricated cover beam arranged at the upper end of the upper column 6 of the cap platform 7 still cannot be spliced. To obtain effective support, it is still necessary to set up temporary support 4 separately. The temporary support can only be removed after the joint reaches the design strength or tension prestress, which will still affect the traffic on both sides

[0006] At the same time, the shape of each section is not the same, so that the formwork of each section of the cover beam cannot be used universally, and with the change of the bridge width (that is, the change of the length of the cover beam), the formwork of the entire set of cover beam needs to be remade, which is not necessary. Conducive to saving resources

Images