波形钢腹板PC简支箱梁桥设计理论与试验研究
发布时间：2018-09-04 05:58
【摘要】：波形钢腹板PC箱梁桥是一种新的桥梁结构。它由混凝土顶底板、体外预应力钢筋与波纹钢腹板三者构成的钢一混凝土组合结构。这种结构恰当地将波纹钢、混凝土结合起来,减少自重,充分发挥了各种材料的性能,且造型美观、施工方便。本文分析了波形钢腹板PC箱梁的结构构造及施工特点,对波形钢腹板PC箱梁的抗弯、抗扭、稳定性及轴向变形等特性进行了研究。给出了波形钢腹板PC箱梁桥的设计理论、计算方法,包括概念设计、主梁截面计算、波形钢腹板计算、预应力钢筋设计等。并将设计理论及方法应用于试验桥的设计实践。本文对试验桥采用ANSYS有限元仿真计算软件及GQJS平面杆系计算软件进行分析计算,研究了主梁各构件的受力状况。重点计算了各种工况下的主梁顶底板的正应力、钢腹板的剪应力及主梁的变形特征。并验算了承载能力极限状态主梁正截面抗弯强度,钢腹板剪切强度等。为对试验桥进行了试验研究,施工过程中在主梁两处断面布置了应力及变形测试点,监测了各阶段主梁顶底板及腹板的应力数据。通过对比监测数据与理论计算数据,验证了理论计算可靠性及设计的合理性。同时通过试验桥的研究,进一步完善了设计理论。
[Abstract]:PC box girder bridge with corrugated steel webs is a new bridge structure. It is a steel-concrete composite structure composed of concrete top and bottom slab, external prestressed steel bar and corrugated steel web plate. This kind of structure combines corrugated steel and concrete properly, reduces the weight of the body, gives full play to the performance of all kinds of materials, and its shape is beautiful and the construction is convenient. In this paper, the structural structure and construction characteristics of the corrugated steel web PC box girder are analyzed, and the bending, torsion, stability and axial deformation of the corrugated steel web PC box girder are studied. The design theory and calculation method of PC box girder bridge with corrugated steel webs are presented, including conceptual design, section calculation of main beam, calculation of corrugated steel web plate, design of prestressed steel bar, etc. The design theory and method are applied to the design practice of the test bridge. In this paper, the finite element simulation software of ANSYS and the software of GQJS plane bar system are used to analyze and calculate the test bridge, and the stress condition of each member of the main beam is studied. The normal stress of the top and bottom plate of the main beam, the shear stress of the steel web plate and the deformation characteristics of the main beam are calculated. The flexural strength of normal section and shear strength of steel web are calculated. In order to study the test bridge, the stress and deformation test points were arranged in two sections of the main girder during the construction process, and the stress data of the top and bottom plates and web plates of the main girder were monitored. The reliability of the theoretical calculation and the rationality of the design are verified by comparing the monitoring data with the theoretical calculation data. At the same time, through the research of the experimental bridge, the design theory is further improved.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U448.216
本文编号：2221218
[Abstract]:PC box girder bridge with corrugated steel webs is a new bridge structure. It is a steel-concrete composite structure composed of concrete top and bottom slab, external prestressed steel bar and corrugated steel web plate. This kind of structure combines corrugated steel and concrete properly, reduces the weight of the body, gives full play to the performance of all kinds of materials, and its shape is beautiful and the construction is convenient. In this paper, the structural structure and construction characteristics of the corrugated steel web PC box girder are analyzed, and the bending, torsion, stability and axial deformation of the corrugated steel web PC box girder are studied. The design theory and calculation method of PC box girder bridge with corrugated steel webs are presented, including conceptual design, section calculation of main beam, calculation of corrugated steel web plate, design of prestressed steel bar, etc. The design theory and method are applied to the design practice of the test bridge. In this paper, the finite element simulation software of ANSYS and the software of GQJS plane bar system are used to analyze and calculate the test bridge, and the stress condition of each member of the main beam is studied. The normal stress of the top and bottom plate of the main beam, the shear stress of the steel web plate and the deformation characteristics of the main beam are calculated. The flexural strength of normal section and shear strength of steel web are calculated. In order to study the test bridge, the stress and deformation test points were arranged in two sections of the main girder during the construction process, and the stress data of the top and bottom plates and web plates of the main girder were monitored. The reliability of the theoretical calculation and the rationality of the design are verified by comparing the monitoring data with the theoretical calculation data. At the same time, through the research of the experimental bridge, the design theory is further improved.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U448.216
【参考文献】
相关期刊论文 前1条
1 刘磊,钱冬生;波纹钢腹板预应力结合梁桥[J];国外公路;1999年01期
，本文编号：2221218
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