压力水管竖向下弯的弯管支墩的设计计算  

The Design and Calculations of Buttress of Pressure Pipes Elbow Curved Downward

作　　者：张辉 ZHANG Hui(Xi'an Water Conservancy Planning Survey and Design Institute, Xi'an 710054, China)

机构地区：[1]西安市水利规划勘测设计院

出　　处：《中国农村水利水电》2019年第10期158-161,共4页China Rural Water and Hydropower

摘　　要：关于压力水管竖向下弯的弯管支墩(镇墩)的设计计算多种文献有介绍,还可以查标准图集直接得到支墩尺寸。但标准图集有下列不尽完善之处:图集所占篇幅大;参数范围有限,当实际参数超出图集范围时,就查不到支墩尺寸,当实际参数不等于图集中参数时,只能得到支墩尺寸的近似值,误差较大;图集中支墩体型不尽合理;只验算基底平均应力,而不验算基底应力的不均匀性,而前者是不需要验算的,后者才是重点需要校核的;不验算支墩的抗倾覆稳定性;无支墩定位尺寸。介绍竖向下弯的弯管支墩的设计计算,它克服了上述缺陷,可直接求解方程,而不用试算。该方法全面合理简单。Design and calculations of buttress of pressure pipes elbow curved downward are introduced in a variety of documents. It can be checked in the standard atlas and obtain the size of the buttress directly. However, the standard atlas has the following features: The atlas takes up a large space and the range of parameters is limited. When the actual parameters are outside the scope of the atlas the butt size can not be found. When the actual parameters are not equal to the parameters in the standard atlas, only the approximate value of the buttress size can be obtained and the error is large. The shape of the pier is not reasonable. Only the average base stress is checked without the unevenness of the base stress. But the former is not required to check and the latter is the key. No anti-overturn stability of the buttress is checked and there is no pier positioning size. This paper introduces the design and calculations of buttress of pressure pipes elbow curved downward. It overcomes the defects above and can directly solve the equation without a trial. The method in this paper is comprehensive, reasonable and simple.

关 键 词：压力水管 竖向下弯的弯管支墩 支墩设计计算 

分 类 号：TV67[水利工程—水利水电工程]