| 摘要 |
PURPOSE: A span expansion support beam structure is provided to extend a span length by improving the curability and strength of concrete. CONSTITUTION: A span expansion support beam structure is composed like the same. An inclined extension bar(2) is attached on the lower part horizontal supporting surface(13) of section shape steel(1). A reinforcement device(3) is welded on the upper horizontal support plane(12) of the inclined extension bar and the end part of the section shape steel. A bottom portion(21) of the inclined extension bar attached on the lower part horizontal supporting surface of the section shape steel.
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