六跨连续梁0号块托架设计

Design of Bracket 0 for Six-span Continuous Beam

针对渭滩渭河特大桥2联(40+4×65+40)m连续梁桥墩截面尺寸的多样性,通过对桥墩上部连接位置先预留槽口,后采用垫块垫出的方式,设计了一套适应全桥桥墩且可拆卸重复利用的三角托架,建立有限元整体分析模型,检算结果表明:托架结构在满足施工安全要求的同时,可满足此桥所有桥墩之间的通用,节省了材料和工程投入,为此类桥梁0号块托架施工设计提供经验。

Aiming at the section size diversity of two(40+4×65+40)m continuous girder piers of the Weitan Weihe River Bridge,the method of the gap firstly reserved at the upper joint of the pier,and then the cushion block pad out is used to design a set of triangular brackets adapted to the full bridge piers,and detachable and reusable.The finite element integral analysis model is established.The calculation results show that the bracket structure can meet the construction safety requirements,and can meet the commonality among all piers of the bridge,and save the material and engineering investment,which can provide the experience for the construction of the Block 0 bracket of the similar bridges.