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INFLUENCE FACTORS ANALYSIS OF OPTIMAL ARRANGEMENT OF NEGATIVE MOMENT STEEL IN FRAME BEAM

Yao Qian-feng

Abstract

The factors influencing frame beam negative moment steel arranged in web are discussed in frame structure.It is feasible that frame beam negative moment steel to be arranged in web if these conditions as followed are fulfilled: the RC floor thickness h≥110mm,the second row steel bar diameter D≤25mm,the floor crack is not run-through,and the crack width is less than limitation of the code.The optimized arrange manner of beam negative moment steel can insure the concrete density degree,and benefit the whole construction quality of frame structure.

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Key concepts: Structural engineering, Moment (physics), Frame (networking), Beam (structure), Bar (unit), Materials science, Steel frame, Engineering