Temperature stress control expansion joint

Abstract

The invention discloses a temperature stress control expansion joint and belongs to a stress control device, and the temperature stress control expansion joint mainly comprises an inner part, a middle part and an outer part, wherein the inner layer is provided with a center guide pole, and the outer layer is provided with a left sleeve and a right sleeve, the middle layer comprises disk springs (4, 5 and 6) ad a rubber spring (10). The left sleeve is in contact and connection with the right sleeve. The path transferred by the expansion joint is as follows: the disk spring (4 and 6) generate deformation for realizing energy release under the action of a temperature load when a structure rod member bears an axial tensile stress; the disk spring (5) generates deformation for realizing energyrelease under the action of the temperature load when the structure rod member bears an axial pressure stress; and the rubber spring (10) can bear a relatively smaller initial pressure stress and canbear a sudden impact load. The temperature stress control expansion joint disclosed by the invention has a wide bearing force amplitude and can bear the tension stress and the pressure stress, is accurate in a force-transferring path, can generate corresponding deformation according to demands for releasing the temperature stress, and has good stability and simple and rapid installation process, and can be connected with circular steel pipes with different diameters.

Description

technical field [0001] The invention relates to a novel temperature stress control device, in particular to a component temperature stress release expansion joint that can be widely used in building space structures, and belongs to the stress control device. Background technique [0002] With the enhancement of the country's economic strength and the needs of social development, the large-span spatial structure has developed rapidly in my country, the number of engineering applications has increased, and the structural forms tend to be diversified. This puts forward higher requirements for the safety of the structure in the process of design, construction and use. The space structure is a high-order statically indeterminate structure system, and the structure is greatly affected by temperature. In the design and construction of the existing space structure, structural measures are often used to partially release the temperature stress. The commonly used treatment methods are...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the structural form, the joints lack versatility, and can only be designed according to the cross-sectional characteristics of specific structural members (round steel pipes), which brings inconvenience to engineering design and construction;

[0005] (3) The plate hinge support can release the temperature stress in the structure as a whole, but its bearing capacity is limited

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