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1)  complete bearing spiral case
直埋蜗壳
1.
In order to study the stressing characteristic of spiral case structure with different embedding types and to ascertain the application feasibility in large-scale hydropower station powerhouse,the spiral case embedded with cushion layer and the complete bearing spiral case were analyzed using three-dimensional nonlinear finite element method(FEM) from an actual project.
结合某工程实例,对垫层蜗壳和直埋蜗壳进行了三维非线性有限元计算,重点从蜗壳外围混凝土裂缝的开展宽度和范围及机墩结构的不均匀上抬位移两方面,对两种埋设方式蜗壳结构进行了比较。
2.
By means of the ABAQUS software,a nonlinear finite element method(FEM) based on damage theory was used in structural calculations of the complete bearing spiral case of a large-scale hydropower station.
基于损伤理论,采用ABAQUS程序对某大型水电站直埋蜗壳方案进行非线性有限元计算,实现了蜗壳加载过程及超载的数值仿真,研究了此新型结构在内水压力上升的过程中钢蜗壳和钢筋应力、混凝土开裂区和机墩上抬位移的变化规律以及结构的超载能力。
2)  complete bearing spiral case
直埋式蜗壳
1.
Nonlinear dynamic responses of complete bearing spiral case under the action of pulsation pressure;
脉动压力作用下直埋式蜗壳非线性动力响应
2.
Three-dimensional nonlinear finite element static calculation of complete bearing spiral case;
直埋式蜗壳三维非线性有限元静力计算
3)  directly embedded spiral case
直埋式蜗壳
1.
Among the three forms mentioned above, the directly embedded spiral case has a good perspective in application with the characteristics of convenient construction and steady working performance of the hydraulic turbine generator unit.
蜗壳可分为垫层、充水保压与直埋式三种,其中直埋式蜗壳施工方便、机组运行稳定,被认为是很有应用前景的蜗壳形式。
4)  directly-embedded spiral case
直埋式蜗壳
1.
The rationality of the contact model was proved by the simulated results of the practical directly-embedded spiral case.
结合三峡电站直埋式蜗壳结构建立有限元模型,分别计算分析了钢衬和外围混凝土间按常规共节点和考虑摩擦接触时结构的静动力特性,并对考虑摩擦接触模型在各项静动荷载作用下的接触间隙进行了研究,对比了不同方案外围混凝土的静动态损伤特性及结构的振动响应,选取不同脉动压力相似比对接触间隙和结构振动响应进行敏感性分析,验证了接触界面模型的合理性。
2.
The stress and strain of a directly-embedded spiral case in the Three Gorges Project was analyzed by using 3-D nonlinear FEM.
本文结合三峡水电站,采用三维非线性有限元法对右岸某机组段直埋式蜗壳结构的受力和变形特性进行分析。
5)  direct embedment of spiral case
蜗壳直埋方案
6)  spiral casing direct laying method
蜗壳直接埋入法
1.
Compared with the bedding laying method and the pressure retaining laying method,the spiral casing direct laying method can make reinforced concrete to bear higher hydraulic pressure.
由于蜗壳直接埋入法施工比较方便,三峡电站15#机组拟采用直接埋入法。
补充资料:蜗壳居
1.比喻窄小的住所。
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