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该文研究了旧桥普通钢筋混凝土(RC)空心板与新桥预应力混凝土(PC)空心板两种不同配筋混凝土结构之间横向拼接可行性问题。采用空间梁格有限元方法进行力学分析研究,研究成果表明:从结构内力的分配角度看,预应力混凝土结构与钢筋混凝土结构的横向拼接应该更有利于旧桥结构的内力状态改善,对于旧桥各主梁的内力及结构变形都有一定程度的卸载作用,因此这种不同配筋种类的空心板梁桥之间进行横向拼接是可行的,但是对于刚度较大的预应力混凝土空心板而言,将分担更大的外荷载,这一点对其结构受力可能是不利的,设计时需要进行空间分析。
This paper studies the feasibility of transverse splicing between two kinds of reinforced concrete structures of old reinforced concrete (RC) hollow slab and Xinqiao prestressed concrete (PC) hollow slab. The results of the research show that the lateral splicing of the prestressed concrete structure and the reinforced concrete structure should be more conducive to the improvement of the internal force state of the old bridge structure, The internal forces and structural deformations of the main girders have a certain degree of unloading, so horizontal splicing of the hollow girder bridges with different kinds of reinforcement is feasible. However, for the rigid concrete prestressed concrete hollow slabs , Will share a larger external load, which may be detrimental to the structure of the force, the design requires spatial analysis.