A two-end tension structure of bonded post-tension prestressed beam constructed in sections

Abstract

The invention discloses a two-end tension structure of a bonded post-tensioned prestressed beam subjected to section construction. The two-end tension structure of the bonded post-tensioned prestressed beam subjected to the section construction comprises an anchor plate and an installation cavity body. A thread sleeve is fixedly installed on one side of the anchor plate through a bolt column, anda fixed plate is fixedly installed on the thread sleeve through a second thread docking sleeve, an installation frame is fixedly installed on one side of the fixed plate, and a first installation plate is fixedly installed on the installation frame through a thread column. An installation gasket is fixedly installed on the other side of the anchor plate, a spiral bar is fixedly installed on one side of the installation gasket through a docking seat, and the installation cavity body is fixedly formed in the end part of the spiral bar through a second installation seat. According to the two-endtension structure of the bonded post-tensioned prestressed beam subjected to the section construction, the functions of tensioning and fine-tuning are realized through the arranged installation frameand the thread column, the situation that pulling and loosening again are required after the construction of a project is avoided or reduced, an arranged reset spring can realize the function of two-end tensioning through reset performance of the reset spring, and the two-end tension structure of the bonded post-tensioned prestressed beam subjected to the section construction is worth popularizingand using.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a tension structure at both ends of a bonded post-tension prestressed beam constructed in sections. Background technique [0002] At this stage, with the diversification of architectural forms, buildings are required to have large spaces and large spans, and higher requirements are placed on structures. Prestressed beams are widely used in large-span concrete structures. At the same time, with more and more construction projects along the track Many, segmental installation and pouring of prestressed beams caused by sub-pit construction. In view of this situation, an improvement is proposed for the construction of bonded post-tensioned prestressed beams. The length of conventional prestressed tendons does not exceed 20m. Bonded post-tensioned prestressed beams The anchorage section of the concrete beam adopts the above-mentioned form, and the extrusion anchor and bac...

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Problems solved by technology

[0002] At this stage, with the diversification of architectural forms, buildings are required to have large spaces and large spans, and higher requirements are placed on structures. Prestressed beams are widely used in large-span concrete structures. At the same time, with more and more construction projects along the track Many, segmental installation and pouring of prestressed beams caused by sub-pit construction. In view of this situation, an improvement is proposed for the construction of bonded post-tensioned prestressed beams. The length of conventional prestressed tendons does not exceed 20m. Bonded post-tensioned prestressed beams The anchorage section of the concrete beam adopts the above-mentioned form, and the extrusion anchor and backing plate of the anchorage section are directly poured into the concrete of the beam-column joint. The prestressed tendons on one side of the end are in a free state, and the use of conventional anchorage forms will cause uneven force on the spiral tendons during the concrete pouring process. Therefore, it is necessary to improve the existing technology to solve the above problems

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