Construction method of large-span thin wall planar arch truss based on stiffened ring beam

A construction method and arch truss technology, applied in truss structures, joists, girders, etc., can solve problems such as stress concentration, uneven force, and difficult construction, so as to avoid stress concentration, avoid uneven force, The effect of strong stability
CN107090932AActive Publication Date: 2017-08-25CHINA CONSTR EIGHT ENG DIV CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA CONSTR EIGHT ENG DIV CORP LTD
Publication Date
2017-08-25

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Abstract

The invention relates to a construction method of a large-span thin wall planar arch truss based on a stiffened ring beam. The construction method comprises the steps: constructing an annularly closed ring beam foundation at the top of a main body structure; mounting a support seat on the ring beam foundation; arranging a support system at the top of the main body structure; arranging a single arch truss with an irregularly shape in the local area subsidence; forming multi-section truss units by segmenting the single arch truss; mounting the truss units two-symmetrically from bottom to top; connecting the adjacent two single arch trusses together through a connecting rod to form a roof cover structure; unloading the support system. By adopting the way of two- two symmetrically installation, the load of the installed truss unit on the support system is balanced; the truss unit is connected into a whole by the connecting rod to form a stable whole force structure, thus the problems of the unevenness of the force of the arch truss with the irregularly shape and concentrated stress are avoided.
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Description

technical field

[0001] The invention relates to the construction field of arch truss roofs, in particular to a construction method of a large-span thin-walled planar arch truss based on stiff ring beams. Background technique

[0002] At present, space structures are developing rapidly all over the world. Among many space structures, arched steel trusses have the following characteristics compared with other building materials such as concrete, masonry and space components: 1) High strength, less materials, and easy construction. The cycle is short, the spanning capacity is large, and it integrates the functions of force bearing and maintenance. It is especially suitable for components and structures with large spans or heavy loads. 2) Steel also has the characteristics of good plasticity and toughness. With good plasticity, the structure will not suddenly break due to overload under normal conditions; with good toughness, the structure has strong adaptability to dynamic load...

Claims

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