Name: how steel sections are joined
Uploaded: 2024-09-12T16:16:25.000Z
Duration: 1 min 17 s
Channel: JoVE

Las secciones de acero se pueden sujetar con remaches, pernos o soldadura.
Un remache es un sujetador de acero con un eje cilíndrico y una cabeza de forma especial.
El remache se calienta a calor blanco en una forja, se inserta mientras está caliente a través de los orificios en los miembros de unión y luego se le da forma con un martillo neumático para formar una segunda cabeza opuesta a la primera
Por lo general, los pernos se colocan en orificios que son un dieciseisavo de pulgada más anchos que el diámetro del perno. Las arandelas de acero endurecido se colocan con frecuencia debajo de uno o ambos extremos del perno antes de atornillar la tuerca.
Por lo general, los pernos se aprietan con una llave de impacto neumática o eléctrica.
En la soldadura, se crea un potencial eléctrico entre las piezas de acero destinadas a la unión y un electrodo metálico.
Cuando el electrodo se coloca cerca de la costura de los miembros de acero, forma un arco eléctrico continuo que funde un área específica tanto de los miembros de acero como de la punta del electrodo, creando un charco fundido
El electrodo se mueve gradualmente a lo largo de la costura, depositando un cordón continuo de metal que se solidifica, formando una conexión sin costuras entre las piezas de acero.

técnicas de fijación de acero

Las secciones de acero se pueden unir mediante diversas técnicas de fijado, como remachado, atornillado y soldadura, cada una de ellas adecuada para diferentes requisitos y condiciones estructurales.

Los remaches son elementos de fijación de acero cilíndricos con una cabeza especialmente diseñada. Durante la aplicación, los remaches se calientan hasta que están al rojo vivo y luego se insertan a través de orificios previamente perforados en las secciones de acero. Se utiliza un martillo neumático para dar forma al extremo expuesto en una segunda cabeza, asegurando las secciones entre sí.

El atornillado es otro método de fijación común en el que los pernos se insertan en orificios que son ligeramente más grandes que el diámetro del perno, generalmente 1,59 mm. A menudo se colocan arandelas de acero endurecido debajo de las cabezas de los pernos o las tuercas para distribuir la carga y evitar daños al acero. Los pernos se aprietan con llaves de impacto neumáticas o eléctricas para garantizar un ajuste seguro.

La soldadura crea una unión fuerte y sin costuras al fundir las piezas de acero en el punto de contacto. Se genera un arco eléctrico entre un electrodo de metal y las secciones de acero. Este arco funde la punta del electrodo y las superficies de acero adyacentes, formando un charco de metal fundido. El electrodo se mueve progresivamente a lo largo de la costura, depositando metal fundido que se solidifica para formar una unión continua y duradera.

Estas técnicas proporcionan soluciones robustas para ensamblar estructuras de acero, cada una de las cuales ofrece diferentes beneficios en términos de resistencia, eficiencia y adecuación a la aplicación.

Técnicas de fijación de acero

Las secciones de acero se pueden sujetar con remaches, pernos o soldadura.
Un remache es un sujetador de acero con un eje cilíndrico y una cabeza de forma especial.
El...

Education

Educación

JoVE Core

Civil Engineering

Ingeniería Civil

Unit 1

Unidad 1

Masonry Materials

Materiales de albañilería

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

Steel Fastening Techniques

how steel sections are joined

Steel sections are joined with rivets, bolts, or welding. Each method fits different structural needs and working conditions. These fastening techniques help assemble strong steel structures in practical ways.

Riveting uses cylindrical steel fasteners with a specially designed head. The rivets are heated until white-hot and then placed through pre-drilled holes in the steel sections. A pneumatic hammer shapes the exposed end into a second head, which locks the pieces together.

Bolting is another common method for joining steel. The bolt holes are slightly larger than the bolt diameter, usually by one-sixteenth inch. Hardened steel washers are often placed under the bolt heads or nuts to spread the load and reduce damage to the steel. The bolts are then tightened with pneumatic or electric impact wrenches for a secure fit.

Welding creates a strong, seamless joint by melting the steel at the contact point. An electric arc forms between a metal electrode and the steel sections. The arc melts the electrode tip and the nearby steel surfaces, creating a molten puddle. As the electrode moves along the seam, it deposits molten metal that solidifies into a continuous, durable bond.

How Steel Sections Are Joined

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Steel sections are joined with rivets, bolts, or welding. Each method fits different structural needs and working conditions. These fastening techniques help assemble strong steel structures in practical ways. Riveting uses cylindrical steel fasteners with a specially designed head. The rivets are heated until white-hot and then placed through pre-drilled holes in the steel sections. A pneumatic hammer shapes the exposed end into a second head, which locks the pieces together. Bolting is...

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key terms and concepts

Learn how steel sections are joined by riveting, bolting, and welding. See how each method works and why builders choose different fastening techniques.

How Steel Sections Are Joined | JoVE K12

JoVE Core Civil Engineering provides a foundational exploration of essential construction materials in civil engineering, focusing on bricks, stones, steel, wood, and concrete through easy-to-understand animated videos. This collection covers the properties, manufacturing processes, and practical applications of these materials. Additionally, the accompanied science-in-action videos demonstrate the research experiments performed in laboratories.

civil engineering

How Steel Sections Are Joined

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