To solve the problems of excessive midspan deflection and web cracking in traditional pres-tressed concrete box girder bridges,a new bridge structure of"Long span corrugated steel web-UHPC composite continuous box girder bridge"is proposed.Through finite element modeling and computa-tional analysis,the structural performance of corrugated steel web-UHPC composite continuous box girder bridge is studied and the performance advantages of this bridge structure are discussed.The re-search shows that,corrugated steel web-UHPC composite continuous box girder bridges have the fol-lowing characteristics:①Compared to traditional PC or corrugated steel web PC composite continuous box girder,the proportion of internal force under dead load of the structure is significantly reduced;②The structure has good adaptability to foundation subsidence;③The lateral stiffness of the struc-ture is weaker than the vertical stiffness;④The eccentric load has a significant impact on the stress of the top deck,followed by the stress of the bottom slab,and has little impact on the vertical displace-ment of the girder;⑤This bridge structure has significant advantages in beam height,top plate thick-ness,and transverse prestressing on the top plate.With the promotion and application of UHPC ma-terials,the combination of corrugated steel webs and UHPC continuous box girder is expected to be-come a competitive bridge type solution for long span continuous beam bridges.
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