重力式挡土墙课程设计重力式挡土墙设计

1、 重力式挡土墙课程设计作者姓名学号班级学科专业土 木 工 程指导教师所在院系建 筑 工 程 系提交日期设计任务书一、 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+415.00DK23+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，内摩擦角；墙后填土表面为水平，即，其上汽车等代荷载值；地基为砾石类土，承载力特征值；外摩擦角取；墙底与岩土摩擦系数

2、。3、墙体材料采用MU80片石，M10水泥砂浆，砌体抗压强1.14，砌体重度。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）目录设计任务书····································

3、·············2一、设计题目····································

4、;·········2 二、设计资料·······································

5、83;·····2设计计算书···········································

6、83;·····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······················&#

7、183;················41、 计算破裂角································

8、;········42 、计算主动土压力系数K和K1··························43、计算主动土压力的合力作用点··········&#

9、183;··············5 三、挡土墙截面计算·································

10、83;·····51、计算墙身重G及力臂ZG·······························62、抗滑稳定性验算·········

11、83;···························6 3、抗倾覆稳定性验算····················

12、83;··············6 4、基底应力验算··································

13、;·····75、墙身截面应力验算···································7四、设计挡土墙的排水措施······

14、;···························8五、设计挡土墙的伸缩缝和沉降缝····················&

15、#183;······8六、参考文献··········································

16、···8七、附图··············································&

17、#183;··8设计计算书一、设计挡土墙的基础埋深、断面形状和尺寸如图所示，挡土墙墙体高为H=8.5m，基础埋置深度d=1.5m,墙身纵向分段长度为L=10m；墙面与墙背平行，墙背仰斜，仰斜坡度1：0.25(02)，墙底倾斜度0.2:1（=11.31°），墙顶宽2.1m，墙底宽2m。二、主动土压力计算1、 计算破裂角经试算，按破裂面交于荷载中部进行计算：<90°tan=-tan+ =-0.701+=0.722=35.8°2 、计算主动土压力系数K和K1K=3、计算主动土压力的合力作用点kN =三、挡土墙截面计算图3-4-1 挡土墙计算图1

18、、计算墙身重G及力臂ZG墙身体积计算：墙身自重计算：力臂ZG计算： ZG1=0.125H+0.476b1=0.125×8.5+0.476×2.1=2.06mZG2=0.651b1=0.651×2.1=1.37m2、抗滑稳定性验算满足抗滑稳定性要求。 3、抗倾覆稳定性验算 墙底倾斜，需把求得的、修正为、。 满足抗倾覆稳定性要求。 4、基底应力验算 满足要求。 5、墙身截面应力验算取墙底截面，按每延米墙长计算。 1）强度计算 满足强度要求。 2）稳定计算 因为 墙为矮墙，取=1，即满足稳定要求。 3）正截面直接受剪时验算 满足受剪要求。四、设计挡土墙的排水措施墙身排水：设置直径为10cm的泄水孔，泄水孔向墙外倾斜5%，间距2.5m，上下交错设置。最下排泄水