下白线分离2桥的标高和桩长计算(附CAD图纸)(含任务书,开题报告,外文翻译,文献综述,计算书3000字,CAD图纸15张)
摘要
标高计算首先根据桥梁平面布置图与任务书，得出要计算的桥梁墩台的桩号，再根据纵坡和竖曲线算出一个桥墩桩号的设计高程；然后根据桥梁标准横断面的横坡或超高，结合纵坡，得出合成坡，最后根据墩台一般构造图中的相关尺寸，算出相应的要求的标高。桩长计算是根据地质孔的土层性质情况，结合桥梁上部荷载的要求，桥桩基础按摩擦桩设计的来计算。根据土层主要物理力学指标得出浮容重，再得到加权平均重度，再得到桩端土容许承载力。结合桩侧土摩阻力，计算得到单桩轴向受压承载力容许值，最后得出合适答案。
关键词 标高，平面，超高，纵断面，竖曲线，设计线，合成坡，桩基础，桩长，单桩轴向受压承载力容许值，摩擦桩，地质钻孔。
under the white line separating 2 the elevation of the bridge and pile length calculation
Abstract
Calculation of the first bridge elevation floor plan in accordance with the mandate of the book, come to the calculation of the bridge Pile number, then according to calculate the longitudinal and vertical curve design of a bridge pier height Pile number; and then in accordance with the standard cross-section of a bridge or cross slope ultra-high, combined with longitudinal come Synthesis slope, and finally general structural map based on Piers relevant size, calculated the elevation of the corresponding request.
Pile length hole calculation is based on the geological nature of the soil, the combined load requirements of the upper bridge, bridge pile foundation pile according to the design of friction data. According to the main soil physical and mechanical indicators drawn float density, and then get the weighted average severe, and then be allowed to pile tip bearing capacity of soil. Combination of soil pile friction, calculate the bearing capacity of single pile to allow the value of axial compression, and finally come to the right answer.
Keywords： elevation, flat, ultra-high, vertical section, vertical curves, design lines, synthesis of the slope, pile foundation, pile length, pile bearing capacity to allow the value of axial compression, friction piles, geological drilling。
下白线分离2标高计算书
一、 桥梁概况
下白线分离2，中心桩号为K26+909.00，上部结构采用预应力砼(后张)简支空心板，桥面连续，下部结构桥板采用肋板台，桥墩采用柱式墩，墩台采用桩基础。本桥0 , 5号桥台单桩轴向受压承载力容许值为2270KN，桥墩单桩轴向受压承载力容许值为3400KN。
平面：本桥位于R＝2500m的左偏圆曲线上。
纵断面：位于i＝1.6％的直线上。
横断面：为整体式路基断面，桥梁宽度为2×17.75m，路幅布置为0.5m(防撞墙)+16.25m(行车道)+2×1.0m（波形护栏）+16.25m(行车道)+0.5m(防撞墙)。
二、 基础数据
铺装厚度＝0.2m，梁高=0.9m，支座厚度=0.041m,梁板宽1.25m；
桥墩盖梁高1.30m，桥台盖梁高1.20m，
三、 标高计算
以3号桥墩为例：
1、内外边线桩号计算
3号墩墩中心处桩号为K26+919,右偏角为70度，
目 录
一．标高计算••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••1
二．桩长计算••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••8
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