Cord string branch dome

Abstract

The invention relates to a dome used in the construction field, in particular to a cable-strut suspensive dome. It consists of upper and lower parts. The upper layer includes a central pressure ring (1), an upper radial rod (2), an upper ring cable (3) and an edge ring beam (7). The upper radial rod (2) is connected to the center of the dome The central pressure ring (1) is connected, the periphery is connected with the side ring beam (7), the middle is connected with the upper ring cable (3), and the upper layer is arranged in a grid shape. The lower layer includes a lower radial cable (5), a lower ring cable (6) and a strut (4). The lower end of the rod (4) is connected to the upper node, and the lower hoop cable (6) is also connected to the junction of the lower radial cable (5) and the strut (4). The lower hoop cable is closed and arranged along the hoop direction. The layers meet at the edge ring beam. The structure of the present invention is simple in force, the stability of the bar member of the pressure bar and the overall stability of the whole structure are high, and the ultimate bearing capacity is large.

Description

technical field [0001] The invention relates to a dome used in the construction field, in particular to a cable-strut suspensive dome. Background technique [0002] In recent years, with the development of prestressed steel structures, a large number of new structural systems have emerged, such as cable domes and suspension dome structures. The cable dome has the characteristics of simple structure, light system, and most of the components are tension members; the suspension dome is a new structure formed by combining the cable dome and the single-layer reticulated shell, which increases the roof rigidity and reduces the construction cost. difficulty. However, these two structural systems also have the following shortcomings: [0003] (1) The upper and lower layers of the cable dome structure are flexible systems, and the rods except the struts cannot bear the pressure, which makes the construction of the cable dome very difficult. Although it has been around for many year...

AI Technical Summary

Problems solved by technology

[0003] (1) The upper and lower floors of the cable dome structure are both flexible systems, and the rods other than the struts cannot bear the pressure, which makes the construction of the cable dome very difficult. Although it has been around for many years, there are few actual structures built so far

[0004] (2) In order to ensure that all the cables of the cable dome structure are in tension, the prestress level must be increased to increase the stress of the compression rod and edge ring beam, so it is necessary to set a very firm support or place a Huge ring beams are arranged, which increases the burden on the supporting structure and wastes materials

[0007] (5) The internal force of the single-layer reticulated shell on the upper layer of the suspensive dome is passively generated by the lower layer of steel cables and external loads, and cannot self-adjust the internal force, so that most of the hoop members of the upper single-layer reticulated shell are passively compressed and cannot be self-adjusted to reduce the stress. little pressure

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