I题目：基于荷载试验的装配式桥梁梁格模型研究摘 要现阶段中国以前建造的许多桥梁进入管养期，越来越多的桥梁面临着安全隐患，如何加强桥梁的养护与管理，对其运营信息进行实时跟踪审查，对桥梁的安全运营是一个巨大的挑战，由于我国特大跨径桥梁已经建立了桥梁健康监测系统，为其安全运营提供了保障。而对于为数众多的中小型桥梁，则可以对其建立桥梁基准有限元模型作为反映桥梁技术状况和承载能力的档案。由于装配式预应力混凝土空心板梁桥在我国中小型桥梁中运用广泛，在对比某城镇干线公路配套桥梁（装配式预应力混凝土空心板梁桥）静动载实验测试数据的基础上，利用 Midas Civil 2018 建立桥梁有限元模型，对装配式预应力混凝土梁式桥梁格模型的纵梁结点缝刚度，桥面板刚度和护栏形式等因素的影响进行对比分析。计算得到刚结与铰结模型的跨中扰度及应变数据，与实测数据进行对比，考虑三种类型的桥面板和三种类型的护栏形式，综合比较得出结果制成折线图。最终得到桥梁基准有限元模型，其跨中扰度及应变已最大成大接近实测值，且可为其他桥梁的有限元模型建立提供参考。关键词：荷载试验；装配式桥梁；梁格模型；有限元模型；分析 IIIIIAbstractMany Bridges previously built in China are now in custody, more and more Bridges facing safe hidden trouble, how to strengthen the bridge maintenance and management, the real.time operating information review, the safety of the operation of the bridge is a huge challenge, due to the large span Bridges in our country have established a bridge health monitoring system, has provided the safeguard for the safe operation.For a large number of small and medium.sized Bridges, the reference finite element model of the bridge can be established as a file reflecting the technical status and bearing capacity of the bridge.Prefabricated prestressed concrete slabs was a bridge in our country, widely used in the small and medium.sized Bridges, a supporting urban trunk road Bridges in contrast (prefabricated prestressed concrete slabs bridge), on the basis of static and dynamic loa...
