【作者】 郭金根；

【导师】 贾益纲；

【作者基本信息】 南昌大学 ， 结构工程， 2007， 硕士

【摘要】 为了弘扬南昌市的历史文化，提升南昌的投资环境和旅游环境，在南昌市建造洪洲宝塔。南昌洪洲宝塔是钢筋混凝土佛塔，但其结构形式与普通钢筋混凝土结构形式有很大差别，主要表现在结构由下往上逐层缩进，外筒结构上、下错位，基座平面尺寸大，高度较高，给结构设计带来一定的难度。如何考虑结构由太阳辐射导致的竖向温度效应及由此带来的重力二阶效应(即重力P-△效应)的影响是在这类结构形式设计中的一个比较复杂的问题，也是同类结构设计中的重要研究课题之一。本论文正是在此背景下开展的，经过总结前人有关结构在太阳辐射作用下温度荷载的计算方法和理论研究成果，确定了本文温度荷载的计算方法，得出了宝塔结构在两种不同太阳辐射方向下向阳面和背阴面的温度差；然后通过对实际结构的合理简化，采用ansys有限元程序对结构在太阳辐射下的竖向温度效应进行分析，得出结构在太阳辐射作用下的整体变形规律及结构主要构件—外筒墙、外筒墙间的连梁及转换节点处板的内力沿层高的变化规律及在同一层不同位置的变化规律；其次，本文还分析了结构在自重单独作用下各主要构件的内力沿层高方向及在同一层的变化规律；最后将太阳辐射作用下结构的侧向变形加在结构上来考虑由此导致的P-△效应，分析结构考虑此P-△效应后的整体变形及各主要结构构件的内力规律，并将其结果与重力荷载单独作用下的结果及在太阳辐射下的结果进行对比，得出了应如何考虑太阳辐射下的竖向温度效应及重力二阶效应的一些结论，对宝塔及同类实际结构的结构设计中如何考虑竖向温度效应及重力二阶效应有一定的指导意义。更多还原

【Abstract】 To enlarge nanchang’s history and culture and improve nanchang’s investmentand traveling’s environment, so that construct HongZhou pagoda in nanchang.TheHongZhou Pagoda is Buddha Pagoda of reinforced concrete,but the structural form ofthe building is different from the common reinforced concrete structure. The mostmanifestment in structure is that the structure floor area is reduced from down toup,that shear wall is staggered in the outer tube.what’s more,eccentric distance andheight are bigger, so it is diffcult to design the structure.How to consider the influenceof vertical temperatural effect which leaded by solar radiation and gravitysecond-order effect(P-△effect)which caused by vertical temperatural effect instructural design is a very complicated problem,which also is one of the vitallyimportant research topics in similar structure design.The paper launchs to research on the condition of the background,compute waysof temperature load in this paper is defined and the temperature difference betweenthe solar orientation and the shady orientation of the pagoda structure under thedifferent orientation of the solar radiatiom is obtained through summarizing some oldways in the paper.Then through simplifying rationally the real structure and analysisthe vertical temperatural effect of the pagoda structure under the solar radiation by thefinite element program of ANSYS,gets the whole deform law of the pagoda structureunder the solar radiation and the internal force variety regulation follow the story highat the same position and the same story high with different position of the outertube、the beam between the outer tube and the slab near the transferm joint,which arethe major member of the pagoda structure;secondly, in the thesis,the major member’sinternal force variety regulation under the gravity function is also obtained;finally, themajor member’s internal force law after consider P-△effect which is caused bygravity act on the deform is gone on regression analysis,then through contrast theobtained results,some conclusions which are about on how to consider the verticaltemperatual effect under the solar radiation and the P-△effect are obtained,these conclusions are valuable and helpful for the pagoda structure design and the similarstructure design on the condition of considering vertical temperatual effect andP-△effect.更多还原