Long-span beam string truss beam off-site construction method

Abstract

A method for off-site construction of large-span beam string truss beam include such steps as establishing three-dimensional solid model according to construction drawing, automatically lofting and numbering component according to three-dimensional solid model, transporting that component to construction site after factory processing is completed, and removing the component from construction site.According to the span and section form of the beam string truss beam, the assembled tire frame is made on the external surface of the venue, and temporary support frames are respectively made on bothsides of the venue, and the temporary support frames are located at the lower and middle parts of the beam string truss beam; The beam body of a beam string truss beam is divided into two sections and assembled on the assembled jig by the components. The two sections of beams are hoisted on the temporary support frame through the lifting equipment outside the venue, and the whole section of beamsis welded after being adjusted and corrected. The beam string truss beam is constructed by off-site two-machine lifting, which avoids the problems of lifting machinery entering into the stadium or being unable to radiate. The installation of the upper steel structure and the construction of the competition site are carried out simultaneously, which greatly shortens the construction period.

Description

technical field [0001] The invention relates to the technical field of construction methods for string-tensioned truss beams, in particular to an off-site construction method for long-span string-tensioned truss beams. Background technique [0002] At present, my country's construction industry is developing rapidly, especially there are more and more large-span space buildings. According to the social development trend, there is an urgent need for construction methods that adapt to it. Inner Mongolia Ice Sports Training Center Construction Project - Avenue Speed ​​Skating Hall Project Roof Large-span Tensile Truss Beam Construction Methods include segmental hoisting construction on site, cumulative slip construction, cumulative lifting construction, etc. The disadvantages of each construction method are as follows: [0003] (1) The main disadvantage of segmental hoisting construction on site is that the crawler crane needs to enter the first floor, and the reinforcement mea...

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Problems solved by technology

[0003] (1) The main disadvantage of segmental hoisting construction in the site is that the crawler crane needs to enter the first floor, and the reinforcement measures are large, difficult and risky

[0004] (2) The main disadvantage of cumulative slip construction is that due to the different heights of each string truss, a large number of support frames need to be erected at the lower part of each string truss as a sliding platform and a sliding tire frame, which requires a large amount of measures and poor economy

[0005] (3) The main disadvantage of cumulative lifting construction is that the string truss assembly needs to be completed on the first floor, and the steel structure and the lower ice surface cannot be constructed at the same time, which is unfavorable for the control of the construction period

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