基于建桥逆序的混凝土桁架T构桥拆除方法研究

Research on demolition method of concrete truss T-frame bridge based on reverse order of bridge construction

以某预应力混凝土下承式三角形桁架T构梁桥为工程背景,采用建桥施工逆序的方法制定了桥梁拆除方法,并基于MIDAS有限元软件模拟了桥梁拆除施工全过程,对该拆除方法的安全性进行了评估,本文所述的桥梁施工逆序的桥梁拆除方案可行性分析研究方法可为同类复杂体系桁架结构桥梁拆除提供借鉴。

Based on the background of a prestressed concrete under supported triangular truss T-beam bridge,the bridge demolition method is established by using the reverse order of bridge construction,and the safety of the demolition method is evaluated based on MIDAS finite element software in the whole process of bridge demolition construction.The feasibility analysis and research method of the bridge demolition scheme in reverse order of bridge construction described in this paper can provide reference for the demolition of similar complex truss structure bridges.