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针对框构桥顶进施工的安全关键,对施工期间的线路加固体系进行空间受力分析。采用ANSYS软件建立有限元模型,综合考虑地基承载力和支座处情况;同时按施工期间受力情况确定最不利工况情况,考查最不利工况下加固体系的最大竖向位移、最大应力为施工提供可靠的数据保证;同时根据结构特点给出简化算法,并对两者做出比较分析。
Aiming at the key safety problem of jacking construction of frame bridge, the space reinforcement analysis of line reinforcement system during construction is carried out. ANSYS software was used to establish the finite element model and comprehensively consider the bearing capacity of the foundation and the situation of the support. At the same time, the most unfavorable condition was determined according to the force during construction. The maximum vertical displacement of the reinforcement system under the most unfavorable conditions was investigated. The maximum stress was Construction to provide reliable data assurance; At the same time according to the structure characteristics of the simplified algorithm, and make a comparative analysis of the two.