The surrounding rock mass of the tgp shiplocks is jointed rock mass cut by well - developed discontinuous joints . the middle frusta and vertical border wall are the important components of the lock room construction . its deformability and stability will directly affect the construction function and using security 永久船闸区岩体属于一种断续节理切割的裂隙岩体，中隔墩和直立边墙是闸室结构的重要组成部分，其变形大小和稳定程度将直接影响三峡航道的结构功能和运行安全。
For the structure that the side - frusta is also used as retain wall , considering the side frusta fastened on the weir body , the plane stress is calculated at first . then the moments , horizontal shear force and vertical force on the bottom of the retain wall are applied as fixate , and stress distribution on the weir body are calculated piecewise 对于边墩兼作挡上墙结构，通常是将边墩视为固端于岩体上，先进行下端为固端的挡墙平面受力计算，再将挡墙下部的弯矩、水平剪力和垂直力作为集中外荷载进行堰体的应力计算，堰体也只能分段进行片面受力计算。
( 2 ) on the base of winkler model , compute the anti - forces of pipeline without frusta , considering the loess cohesion . compute the distortion and force of pipeline under different length of collapse . and get the stress field and the greatest mises stress and its location ( 2 )以winkler线形地基模型为基础，确定无固定墩管道两端的地基反力，并考虑黄土的内聚力作用，计算了不同长度黄土坍塌发生时管道的受力和变形，给出了管道上应力场的分布和最大mises应力部位。
Shankou spillway project has many specific characteristics , for example , the gate frusta and weir body have equivalent thickness , the weir body is low and have corridor , the foundation of the weir body is " high - low foot " " and the side frusta is also used as retain wall . in view of the characteristics , to better analyze the stress distribution on weir body , gate frusta , the joints between gate chamber and weir body , under the condition that the gate chamber is applied with asymmetrical loads and complicated constraints , three dimensional finite element method is applied in this paper 本文针对山口溢洪道闸墩与堰体底板厚度相当，堰体为低堰且设有廊道、堰体建基面“高低脚”及边墩兼作挡土墙等具体特点，在闸室设计中采山口水利枢纽工程溢洪道闸室三维有限元整体应力计算分析用三维有限元整体应力计算方法分析闸室的受力状态，分析闸室在荷载不对称。
