Control and Study on Cracking and Distortion of Ladder-Reinforce Steel Concreted Beam

摘要

Bi-steel is an economic and safe structure .Its popular using in reinforced concrete structure can save a lot of steel. This is an ideal way to make more profit for company. This paper analyzes the bi-steel structure which is welded by grade 3 hot rolled ribbed steel, emphasizes on the methods of calculating the cracking and deformation of flexural member, and also analysis the stiffness and the feature of cracking completely in theory. At the same time, this paper presents the calculating formulas of stiffness and cracking to the bi-steel concrete structure with grade 3 hot rolled ribbed steel by the observation and theoretical analysis.