Method and device for seismic strengthening of shape memory alloy pipe networks

Abstract

The invention provides a method and device for seismic strengthening of shape memory alloy pipe networks, and the method and device provided by the invention are used for reducing the tensile stress and bending stress of pipelines in earthquakes, dissipating the earthquake input energy, decreasing the earthquake reaction of pipe networks and protecting the pipe networks from being damaged and destroyed under the action of the earthquake. The device provided by the invention is composed of pipelines, a fixed connecting piece flange, a pipeline flange, a pipeline connecting bolt, a shape memory alloy bar and a shape memory alloy bar connecting bolt, wherein the pipelines are connected with the pipeline flange; the pipeline flange is connected with the pipeline connecting bolt; the fixed connecting piece flange is positioned at two sides of the pipeline flange, and is connected with the shape memory alloy bar; and the shape memory alloy bar is connected with the shape memory alloy bar connecting bolt. The method and device provided by the invention have the advantages that the earthquake input energy is dissipated, the pipeline earthquake reaction is decreased, and the nonoccurrence of damage and destroy of the pipelines under the action of earthquake is prevented; and after the earthquake, because the shape memory alloy has the capability of self restoration, the deformation of the pipelines is reset automatically without any maintenance and replacement.

Description

(1) Technical field [0001] The invention relates to pipeline technology, in particular to an anti-seismic reinforcement method and device for a shape memory alloy pipeline network. (2) Background technology [0002] With the development of economy and society and the acceleration of urbanization, my country's population and wealth are gradually concentrated in cities. When cities suffer from strong earthquake disasters, they will inevitably suffer heavy losses. The pipeline network is an important infrastructure for urban operation. It undertakes the carrying functions of industrial and civil water supply, gas supply, oil supply, and sewage discharge. It transports various resources for industrial production and people's daily life, just like the blood circulation system of the city. Once the lifeline pipe network system is damaged by an earthquake, the operation of the entire city will stop, resulting in huge and immeasurable economic losses. Since 1971, many major earthqu...

AI Technical Summary

Problems solved by technology

At present, there are two main methods for pipeline reinforcement: one is to strengthen the connection strength and enhance its resistance, but this method is easy to cause brittle failure of the connection; the other method is to set the connection form as a flexible connection. Large deformation can be produced in the middle, so that the main deformation is concentrated at the joint of the pipeline, which protects the damage of the pipeline itself

However, due to this method, the deformation is concentrated at the pipe joint, which may easily cause excessive deformation of the pipe joint, causing leakage and other problems.

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