重力式挡土墙课程设计
重力式挡土墙课程设计
作学班学指所提
者姓名 号 级
土 木 工 程
建 筑 工 程 系
科导在交
专教院日
业 师 系 期
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重力式挡土墙课程设计
设计任务书
一、 设计题目
本次课程设计题目:重力式挡土墙设计
二、 设计资料
1、线路资料:建设地点为某一级公路DK23+415.00~DK23+520.00段,在穿过一条深沟时,由于地形限制,无法按规定放坡修筑路堤,而采取了贴坡式(仰斜式)浆砌片石挡土墙。线路经过的此处是丘陵地区,石材比较丰富,挡土墙在设计过程中应就地选材,结合当地的地形条件,节省工程费用。
2、墙后填土为碎石土,重度?0?18kN/m3,内摩擦角??35?;墙后填土表面为水平,即??0?,其上汽车等代荷载值q?15kN/m2;地基为砾石类土,承载力特征值
fk?750kPa;外摩擦角?取14?;墙底与岩土摩擦系数??0.6。
3、墙体材料采用MU80片石,M10水泥砂浆,砌体抗压强1.14N/mm2,砌体重度?0?24kN/m3。
4、挡土墙布置形式及各项计算参数如下图所示:
图4-1 挡土墙参数图(单位:m)
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重力式挡土墙课程设计
目录
设计任务书·················································2
一、设计题目·············································2
二、设计资料·············································2
设计计算书·················································4
一、设计挡土墙的基础埋深、断面形状和尺寸·················4 二、主动土压力计算·······································4
1、 计算破裂角········································4 2 、计算主动土压力系数K和K1··························4 3、计算主动土压力的合力作用点·························5 三、挡土墙截面计算·······································5
1、计算墙身重G及力臂ZG·······························6 2、抗滑稳定性验算·····································6 3、抗倾覆稳定性验算···································6 4、基底应力验算·······································7
5、墙身截面应力验算···································7 四、设计挡土墙的排水措施·································8 五、设计挡土墙的伸缩缝和沉降缝···························8 六、参考文献·············································8 七、附图·················································8
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