Aiming at the situation that the negative bending moment area of the steel-concrete composite beam is easy to crack,the UHPC-narrow steel box composite beam structure is proposed,and the tension of the negative bending moment area of the combined beam is resisted by UHPC.Through the static loading test under negative bending moment of the five test beams,the influence of different steel fiber dosage on the crack distribution in the wing plate is obtained,the crack distribution characteristics of each test beam are analyzed,and the calculation method of the crack width is derived,and the theoretical value and the test value are well consistent.
万方数据
维普
