Research On Rigidity And Crack Of Steel Reinforced Concrete Beam

This paper firstly introduced the properties,the history and the base form of Steel Reinforced Concrete (SRC). My thesj.s focus on the rigidity and crack of SRC structures,hoping to do some constructive works.Secondly,the calculation mode about bending rigidity of Reinforced Concrete (RC) member and SRC member is analyzed. Based on the test of two large-dimension SRC girders and the research of rigidity and some ever-proposed formulas,a simplified formula,which is suitable for calculation of engineering,is proposed.The formulas on crack width of RC beams and SRC beams are analyzed at home and abroad too. The calculation formulas on the maximum crack width of SRC beam under short time load are suggested. The calculation result tallies that of tests well.