Segmented string prestressed giant reticulated shell structure

Abstract

The invention discloses a segmented string prestressed giant reticulated shell structure, which comprises a crossed three-dimensional truss series cylindrical surface giant reticulated shell, a prestressed cable strut system and a stabilizing cable system, wherein the prestressed cable strut system consists of segmented string prestressed plane cable strut systems in symmetrical arrangement at thelower part of each middle transverse three-dimensional truss arch; each segmented string prestressed plane cable strut system is divided into three segments with the approximately identical lengths;the three segments are respectively arranged at the two sides and the midspan of each middle transverse three-dimensional truss arch; the stabilizing cable system is formed by stabilizing cables in parallel arrangement in the longitudinal direction of the structure between the lower ends of support rods of each segmented string prestressed plane cable strut system; and the two ends of each stabilizing cable are anchored onto main nodes of the transverse three-dimensional truss arches arranged at the two ends. The segmented string prestressed giant reticulated shell structure has the advantagesthat the problem of support rod destabilization due to overlength of the support rods caused by excessive structure span is solved; the use space occupation by the structure can be obviously reduced;the cables and the support rods are arranged at the lower part of the three-dimensional truss arch; and the structure maintenance, the roof arrangement and the waterproof treatment are convenient.

Description

technical field [0001] The invention relates to a roof structure for a building structure, in particular to a segmented chord prestressed giant reticulated shell structure suitable for a super-long-span roof. Background technique [0002] With the continuous development of social economy, people have put forward higher and higher requirements for the spanning ability of long-span spatial structures. develop. With the increase of the structural span, the irrationality of the mechanical performance of the single-form traditional large-span spatial structure has become more and more prominent, and it has been unable to meet the needs of super-long-span development. Engineers are also constantly exploring and proposing various new structural systems, such as suspension domes, cable domes, partial double-layer structures, and giant grid structures. With the application and development of prestressing technology in the steel structure system, the introduction of the prestressing...

AI Technical Summary

Problems solved by technology

However, a reasonable prestressed system layout needs to be considered comprehensively. The length of the struts in the existing string beam structure increases with the increase of the structural span, and the stability of the struts is prominent. Moreover, the overall length of the cables also significantly affects the indoor space.

If part of the cables and struts are arranged outside the structure, the cables and struts will be exposed, which will be greatly affected by the external environment, which is not conducive to the maintenance of the structure, and is also not conducive to the roof layout and waterproof treatment, affecting the durability of the structure and the appearance of the roof

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