Construction method of embedded lower chord member propeller strut web member fabricated truss

Abstract

The invention relates to a construction method of an embedded lower chord member propeller strut web member fabricated truss. The construction method comprises the following steps of (1) simultaneously prefabricating a propeller strut, an upper chord, an embedded lower chord member body and an end rod in parallel in a prefabrication factory; (2) assembling the propeller strut and the embedded lower chord member body, placing the embedded lower chord member body into an embedded space of a first tail end frame body at the lower part of the propeller strut, and injecting post-slurry into a gap between the propeller strut and the lower chord member body to form an assembled propeller strut web member; (3) flatly laying the upper chord on the propeller strut, placing a second tail end of the upper part of the propeller strut into a hole of the upper chord, and wedging the tail end of the propeller strut by adopting a wedging body; (4) arranging a rib body in the embedded lower chord member body, and tensioning the rib body to tension the lower chord member; and (5) hoisting the embedded lower chord member propeller strut web member fabricated truss to a required position. According to the construction method of the embedded lower chord member propeller strut web member fabricated truss, the method of split prefabrication and on-site assembly is adopted, transportation and storage yard storage are facilitated, cost is saved, convenience is improved, the construction period is greatly shortened, economic benefits are brought, wide application prospects are achieved, and the development of fabricated buildings is greatly promoted.

Description

technical field [0001] The invention relates to the technical field of concrete structures in civil engineering, in particular to an assembled truss and a construction method thereof, in particular to a construction method for an embedded bottom chord herringbone web assembly truss. Background technique [0002] Prefabricated concrete structures have become the mainstream trend in the construction industry. The production and production of precast concrete components occupy an important position. Trusses are commonly used structural forms. Precast concrete trusses have been used as buildings, roof structures and bridge structures. Used extensively in engineering. However, the overall prefabricated concrete truss not only takes up a lot of space due to its huge external dimensions, but is often produced on site due to transportation restrictions, and the storage space required for the overall prefabrication of the truss, as well as the complex reinforcement of the truss and t...

AI Technical Summary

Problems solved by technology

However, the overall prefabricated concrete truss not only takes up a lot of space due to its huge external dimensions, but is often produced on site due to transportation restrictions, and the storage space required for the overall prefabrication of the truss, as well as the complex reinforcement of the truss and the complex mold system Both the cost and the high cost make this process flawed. Even compared with the solid beam, the saving of the truss material is offset by the cumbersomeness caused by the cost of the mold and the complex reinforcement.

In addition, when the span of the truss is large, the on-site open-air cast-in-place production is also affected by factors such as typhoon, heavy rain, and low temperature weather, which also affect the progress

Practice has proved that as a traditional construction method of overall prefabrication, trusses affect the construction period and cost, resulting in an increase in construction period costs, and it is difficult to reflect the advantages of prefabricated structures

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