Rolling friction joint suspended-dome structure and construction method thereof

A rolling friction, chord-supported dome technology, applied in the dome-roof structure, arched structure, roof and other directions, can solve the problems of inconsistency in the size distribution of internal force with the design, adverse effects on the mechanical properties of the chord-supported dome structure, and uneven tension, etc. The effect of enhanced self-adjustment function, high construction efficiency and reduced construction cost
CN100513719CInactive Publication Date: 2009-07-15ZHEJIANG UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2009-07-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a rolling friction node suspension dome structure and a construction method. It is composed of a single-layer reticulated shell and a cable-strut structure formed by nodes; the nodes are rolling friction nodes. According to the length of 5 to 10 cable segments as a line unit, divide a continuous hoop cable into several line units and set the same number of tension points. Firstly stretch the tension points simultaneously to 105%~120% prestressed construction control value, and then relax back to 100% prestressed construction control value. The internal force difference between the adjacent cable sections of the node is further reduced, so that the internal force of each cable section in a circle of hoop cables is basically kept equal. After the hoop cables of other rings are tensioned in sequence, the prestressed construction of the entire suspendome structure is completed. The invention has high construction precision, high construction efficiency, low construction cost and safe structure use.
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Description

technical field

[0001] The invention relates to a large-span prestressed space reticulated shell structure, in particular to a rolling friction node suspend dome structure and a construction method. Background technique

[0002] The prestressed construction methods of the suspension dome structure are: (1) stretching the circular cable method; (2) tensioning the longitudinal cable (rod) method; (3) jacking up the vertical pole method. Due to the large number of warp cables (rods) and vertical poles and their relatively independent geometric positions, the construction of the latter two methods is very cumbersome. The hoop cables are all or partially continuous, so method 1 is the most simple and efficient, and is the preferred method for prestressed construction of most suspensive dome structural engineering. However, this construction tensioning method also has a very prominent shortcoming. During the tensioning process, there will be relative sliding between the hoop cabl...

Claims

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