A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ROLL MOLDING SQUARE STEEL PIPE
PROBLEM TO BE SOLVED: To provide a roll molding square steel pipe capable of reducing as further as possible deterioration in an extension performance of a corner part in which a stress is loaded most.SOLUTION: In the square steel pipe, the condition of D≥B is satisfied between a longitudinal side length and a lateral side length and the square steel pipe has plate thickness (t). The corner part in the square steel pipe is formed from a corner linear part Land curve parts (also called corner curve parts) at both sides of the corner linear part. The corner linear part Land a longitudinal side flat plate part (d) satisfy an inequality (1) of t/2
【課題】最も応力を負担するコーナー部の伸び性能の低下を極力少なくすることが可能なロール成形角形鋼管を提供する【解決手段】縦辺長さＤ≧横辺長さＢで板厚ｔの角形鋼管におけるコーナー部がコーナー直線部ＬＭとその両側の曲げ部（コーナー曲げ部とも呼ぶ）とからなり、前記コーナー直線部ＬＭ及び縦辺側平板部ｄが式（１）を満たし、かつ、縦辺側及び横辺側の曲げ部曲げ半径の係数ＲＤ、ＲＢと幅厚比D/tとの関係が式（２）を満たす。 ｔ／２＜ＬＭ＜ｄ ・・・（１）。 ２．０＜ＲＤ、ＲＢ≦0．3231（D/t）−0．3273 ・・・（２）。 但し、式（２）はＲＤ、ＲＢがいずれも式（２）を満たすことを意味する。【選択図】図１
ROLL MOLDING SQUARE STEEL PIPE
PROBLEM TO BE SOLVED: To provide a roll molding square steel pipe capable of reducing as further as possible deterioration in an extension performance of a corner part in which a stress is loaded most.SOLUTION: In the square steel pipe, the condition of D≥B is satisfied between a longitudinal side length and a lateral side length and the square steel pipe has plate thickness (t). The corner part in the square steel pipe is formed from a corner linear part Land curve parts (also called corner curve parts) at both sides of the corner linear part. The corner linear part Land a longitudinal side flat plate part (d) satisfy an inequality (1) of t/2
【課題】最も応力を負担するコーナー部の伸び性能の低下を極力少なくすることが可能なロール成形角形鋼管を提供する【解決手段】縦辺長さＤ≧横辺長さＢで板厚ｔの角形鋼管におけるコーナー部がコーナー直線部ＬＭとその両側の曲げ部（コーナー曲げ部とも呼ぶ）とからなり、前記コーナー直線部ＬＭ及び縦辺側平板部ｄが式（１）を満たし、かつ、縦辺側及び横辺側の曲げ部曲げ半径の係数ＲＤ、ＲＢと幅厚比D/tとの関係が式（２）を満たす。 ｔ／２＜ＬＭ＜ｄ ・・・（１）。 ２．０＜ＲＤ、ＲＢ≦0．3231（D/t）−0．3273 ・・・（２）。 但し、式（２）はＲＤ、ＲＢがいずれも式（２）を満たすことを意味する。【選択図】図１
ROLL MOLDING SQUARE STEEL PIPE
ロール成形角形鋼管
OKADA TADAYOSHI (author) / KAWABATA YOSUKE (author)
2016-11-17
Patent
Electronic Resource
Japanese
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