A composite anti-buckling energy-dissipating support and its manufacturing process

Abstract

A composite anti-buckling energy-dissipating support, including a stressed main member, an unbonded material layer, and a restraint member located on the periphery of the stressed main member. The stressed main member includes a core stressed member, and The left non-yielding section and the right non-yielding section, the core stress member is made of steel-polyurethane composite pipe, the restraint member includes end plate, sleeve, filling material, the sleeve is set on the periphery of the core stress member, and the end plate is designed as a "Ten"-shaped hollow member, a cavity is formed between the sleeve, the left end plate, the right end plate, the left non-yielding section, the right non-yielding section and the core force-bearing member, and the grouting material is poured into the cavity; The surface of the left yielding section, the right yielding section and the core stress member is provided with an unbonded material layer. And a manufacturing process for a composite anti-buckling energy-dissipating support is provided. The invention reduces steel consumption, self-weight and manufacturing cost, and is suitable for large-span structures, over-story structures, large overhang structures and large-story structures.

Description

technical field [0001] The invention relates to the field of traffic engineering, in particular to an anti-buckling energy-consuming support in the field of highway bridge engineering and a manufacturing process thereof. Background technique [0002] my country is located between the two major seismic belts in the world - the circum-Pacific seismic belt and the Eurasian seismic belt. It is squeezed by the Pacific plate, the Indian plate and the Philippine Sea plate, and the seismic fault zone is very active. Earthquake disasters will occur every year, which will lead to the collapse of a large number of traffic bridges in our country, which has brought a huge threat to the life safety of our people. Due to the impact of earthquake disasters every year, our country will spend heavily on post-earthquake bridge construction. As an excellent energy-dissipating component, anti-buckling energy-dissipating bracing will ensure the safety of bridge structures and building structures,...

AI Technical Summary

Problems solved by technology

However, most of the existing energy-dissipating braces in the Chinese market are very uneconomical. Pure steel anti-buckling energy-dissipating braces use a large amount of steel, the weight of the brace is large, and the production cost is relatively high; the self-weight of steel-concrete anti-buckling energy-dissipating braces Larger, and due to the poor tensile capacity of concrete, after the concrete cracks and breaks, weak parts are prone to appear inside the restraint device, and the restraint transposition will not be able to effectively restrain the local buckling of the core stress-bearing members, resulting in energy consumption for buckling resistance Destruction of the support; with the rapid development of the national economy, there are more and more bridge structures across the river, bridge structures across the sea, and bridge structures with large overhangs. Buckling-resistant supports need to have greater length and bearing capacity, which is now a common practice It is to increase the cross-sectional area, which will not only affect the aesthetics of the structure, but also greatly reduce the utilization rate of materials.

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