水电站蜗壳弹性垫层作用的简化计算  

Simplified Analysis of the Effect of the Elastic Layer on Turbine Case in Hydropower Station

作　　者：王胜[1] 

机构地区：[1]黄委会勘测规划设计研究院,郑州450003

出　　处：《水力发电学报》2000年第3期23-28,共6页Journal of Hydroelectric Engineering

摘　　要：在水电站钢蜗壳上半圆铺设弹性垫层 ,钢蜗壳、弹性垫层和外围混凝土就构成了复合结构。本文基于压力钢管的工程实践 ,采用弹性力学圆桶公式 ,简化出钢蜗壳、垫层和混凝土相互作用的计算模型 ,推导出垫层的厚度弹模比与内水压力外传比例的关系公式 ,并用工程实例加以验证。结合小浪底水电站的蜗壳垫层 ,计算了外传内水压。Elastic layer is often installated on the up semiturbine case in hydropower station. The steel turbine case, the elastic layer, and the out concrete form a composite structure. Based on the experience of penstock engineering and elastic cylindrical formulation, an analytical model on the interplay among the turbine case, the elastic layer and the out concrete is simplified. A relational formula between the ratio of width to Yang modulus and the ratio of internal water pressure to outer pressure is established and proved by construction experience. As an example, the outer pressure of the turbine case in Xiaolangdi hydropower station is calculated. The construction requirement of the elastic layer is introduced.

关 键 词：水电站钢蜗壳 弹性垫层 厚度弹模比 水轮机 

分 类 号：TK730.312[交通运输工程—轮机工程] TV7[动力工程及工程热物理—流体机械及工程]