【作者】 邹常海；

【导师】 周凌远；

【作者基本信息】 西南交通大学 ， 桥梁与隧道工程， 2013， 硕士

【摘要】 在当今桥梁界,刚构桥得到了非常广泛的应用。传统的刚构桥受中跨混凝土自重影响中跨跨度非常有限,为了加大中跨跨度,桥梁工程师在刚构桥中跨中部用钢箱梁代替混凝土箱梁形成混合梁刚构桥。为了将钢箱梁中内力传递到混凝土箱梁中,必须在钢箱梁与混凝土箱梁连接处设置钢混结合段,钢混结合段是混合梁刚构桥的薄弱环节,所以有必要对钢混结合段的构造设计进行研究。以诸永高速公路温州段延伸工程上的瓯江大桥为工程背景,在瓯江大桥的钢混结合段基础上采用通用有限元软件ANSYS建立了不同构造的钢混结合段模型,主要进行了以下研究：(1)采用通用有限元软件MIDAS建立瓯江大桥的全桥模型,用通用有限元软件ANSYS建立不同构造的钢混结合段局部模型。(2)在全桥模型中,在恒载作用下进行静力分析,得到钢混结合段局部模型的边界位移。(3)根据相同长度不同承压板构造形式的钢混结合段局部模型的计算结果,通过对比钢混结合段应力分布及其内力传递过程评价不同承压板构造形式的合理性。(4)根据不同长度的后承压板式钢混结合段局部模型的计算结果,通过对比钢混结合段应力分布及其内力传递过程评价不同长度的后承压板式钢混结合段的合理性。更多还原

【Abstract】 In today’s bridge community, rigid frame bridge has been widely used.The span of midspan of the traditional rigid frame bridge is limited by the weight of midspan, in order to increase the span of midspan, bridge engineers use steel box girder take place of concrete box girder in the middle of midspan to form hybrid girder. In order to transfer force from steel box girder to concrete box girder, we must build steel-concrete joint section at the location of the steel box girder and concrete box girder connection, steel-concrete joint section is the weakness of the hybrid girder rigid frame bridge, so it is necessary to study structural design of steel-concrete joint section.Taken the Oujiang bridge on the extension project of Wenzhou section of Zhuyong highway as the background, Using the finite element software of ANSYS build model of steel-concrete joint section with different structure on the base of Oujiang bridge, the main research of this paper are shown as following:(1)Using the finite element software of MIDAS build the full-bridge model of Oujiang bridge, using the finite element software of ANSYS build partial model of steel-concrete joint section with different structure.(2)In the full-bridge model, take the static analysis under the dead load to get the boundary displacement of the partial model of steel-concrete joint section.(3)According to the result of partial model of steel-concrete joint section with same length and different bearing plate structure, evaluated the reasonableness of steel-concrete joint section with same length and different bearing plate structure by comparing the stress distribution and force transmission of steel-concrete joint section.(4) According to the result of partial model of rear bearing plate structural steel-concrete joint section with different length, evaluated the reasonableness of rear bearing plate structural steel-concrete joint section with different length by comparing the stress distribution and force transmission of steel-concrete joint section.更多还原