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通过对6座既有预应力混凝土桥梁检测结果进行评估分析,将有限元分析和AASHTO规范得到的应变、荷载分布系数,退化与实测结果进行了比较;由于受到许多现场因素的影响,分析与实测结果之间存在很大的差异。为了检测这种差异及量化其影响,在更细化的有限元分析中模拟了横隔板梁、支座刚度和斜交角等对荷载分布与最大应变的影响,结果发现现场因素对最大应变的影响比对荷载分布系数的影响要大得多。
Through the analysis and evaluation of the test results of six existing prestressed concrete bridges, the finite element analysis and the strain, load distribution coefficient and degradation obtained from the AASHTO code are compared with the measured results. Due to the influence of many on-site factors, analysis and measurement There are big differences between the results. In order to detect this difference and quantify its influence, the influence of load on the load distribution and maximum strain of the diaphragm, such as the diaphragm, bearing stiffness and skew angle, was simulated in the more detailed finite element analysis. The results show that the influence of on-site factors on the maximum strain The effect of the influence ratio on the load distribution factor is much larger.