A connection node of a strut structure double as a light guide and its installation method

Abstract

The invention relates to a connecting node of a strut structure serving as a light guide tube and an installation method thereof, comprising a strut structure, a chord structure, and a joint bearing node; the strut structure is broken at the lower surface of the chord structure and divided into an upper Half of the struts and the lower half of the struts, the upper half of the struts pass through the middle of the chord structure and are welded together with the chord structure; the lower half of the struts and the chord structure are connected by two joint bearing nodes Integrate, the strut realizes the rotation along the length direction of the cable through the joint bearing node, and at the same time realizes that the strut structure is hollow and unobstructed in the vertical direction. The invention aims to overcome the insufficient technical problem of the integrated design of the existing light guide tube and the strut of the string structure.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a strut structure connecting node also serving as a light guide tube and an installation method thereof. Background technique [0002] With the development of long-span space structures, the shape of space buildings is becoming more and more complex, and the integrated design of structures and buildings has always been one of the design goals pursued by structural engineers. Among them, the integrated design of the light guide tube and the string structure strut is a better product, which not only saves the amount of engineering steel, but also prevents the light guide tube from occupying the building space, making the indoor space more concise and orderly. [0003] Since the strut structure that doubles as the light guide needs to be hollow and unobstructed, the currently designed project uses the strut as the main through member, and the chord of th...

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Problems solved by technology

[0004] 1. The upper part is rigidly connected. During use, the cable force of the lower part will generate a large additional bending moment inside the strut, which requires a large cross-sectional specification of the strut; at the same time, the cross-sectional specification of the strut must not be smaller than the specification of the chord to ensure the rigidity of the chord. In addition, stiffening plates cannot be installed inside the light pipe, and the rigidity of the nodes is weak

[0005] 2. During the tension construction of the prestressed structure, the lower part of the strut needs to be pre-deflected to meet the tensioning requirements. However, the upper part of the strut is rigidly connected and cannot be pre-deflected. The lower part of the strut needs to be used as a sliding node. The position is fixed, the process is complicated, and the construction is cumbersome

[0006] 3. During structural construction, when the struts and chords are assembled and hoisted together on the ground, a turning process needs to be added during the hoisting process. At the same time, when the height of the struts is large, an additional crane is required to assist turning over; when the struts are separated from the chords During hoisting, a support frame needs to be installed at the position of the strut, which increases the amount of construction measures. At the same time, the weld between the strut and the chord needs to be welded at high altitude, resulting in low construction efficiency and high safety risks

The above three problems greatly limit the application of the integrated design of the light guide tube and the string structure strut

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