三跨的装配式预应力空心板桥毕业设计计算书.doc

摘 要 本设计为三跨的装配式预应力空心板桥，桥上的空间为2×3.5＋2×0.5m，桥的跨径为8米，桥下空间为7.8米。装配式预应力空心板桥的设计步骤可分为：一，设计装配式预应力空心板桥时考虑桥的跨度为8米，总跨度24米，板数为8块，板高62cm，宽度99cm长度796cm。根据具体尺寸计算空心板的受弯，抗剪等。二，桥面设计时还要考虑到各种受力，同时用到杠杆原理法、等效截面法或偏心压力法等方法，同时要验证桥面结构的稳定，合理性。还要对桥梁的正常使用状态下的截面抗裂性进行验算。对桥梁的相关变形产生的挠度进行计算。对桥梁的截面在持久状态下的相关预应力计算和复核。三，盖梁的计算，桥墩的设计采用桩柱式，桥墩的基础采用钻孔灌注桩且是双柱式桥墩。桥墩的相关计算对桥墩的钻孔桩的荷载、桩长进行计算。对桥墩的桩的内力进行计算。对桥墩的的墩顶的进行水平位移的纵向的计算和复核。 关键词 ： 预应力混凝土，空心板，杠杆原理 ABSTRACT The design for the three-span fabricated prestressed hollow slab bridge, bridge room for 2 × 3.5 + 2 × 0.5m, the bridge span of 8 meters, the bridge is 7.8 meters space. Prefabricated prestressed hollow slab bridge design steps can be divided into: First, the design prefabricated prestressed hollow slab bridge span bridge considering 8 meters, with a total span of 24 meters, plate number 8, plate height 62cm, width 99cm Length 796cm. Calculation hollow flexural, shear, etc. depending on the size. Second, the bridge design but also take into account the force, while the use of leverage law, effect or eccentric pressure section method and other methods, but to verify stability, reasonable structure of the bridge. Also on Diagonal Cracking under normal use of the bridge will be checking. Deflection of the bridge-related deformation of the calculation. The cross-section of the bridge in the persistent state associated prestressing calculation and review. Third, the calculated beam cover, pier design uses a pile column, foundation bored piles and piers using a double-column pier. Correlation calculation piers for loading piers drilled piles, pile length calculated. Pier pile internal force calculation. Piers for horizontal displacement of the top of the vertical calculation and review. Keywords: concrete, hollow plate, lever principle , 目 录 前言1 上部结构 TOC \o 1-2 \h \z \t 标题 3,3 1 桥梁得设计概况3 1.1 工程概况及依据3 2 桥梁设计的构造形式及尺寸选定3 3 桥梁上部部分的结构计算7