New methodology for safety assessment of steel-lined pressure shafts using high-strength steel

A.J. Pachoud; Stucky Ltd; P.A. Manso; A.J. Schleiss

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New methodology for safety assessment of steel-lined pressure shafts using high-strength steel

机译：高强度钢衬里压力轴安全评估的新方法

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Although high-strength steel provides higher tensile yield strength, the fatigue resistance of the steel welded joints is not increased compared with mild, more ductile, steels. Under more severe operational conditions, particularly for pumped-storage plants, the number of starts and shut-downs of the generation units increases. Fatigue of the welded joints may become critical, especially in the case of imperfections and undetected flaws in the welds. This paper proposes a new methodology for safety assessment of the steel liners of pressure tunnels and shafts.

机译：尽管高强度钢具有较高的拉伸屈服强度，但与低碳钢，延性更高的钢相比，钢焊接接头的耐疲劳性并未提高。在更严峻的运行条件下，特别是对于抽水蓄能电站，发电机组的启动和关闭次数都会增加。焊接接头的疲劳可能变得至关重要，尤其是在焊缝中存在缺陷和未发现缺陷的情况下。本文提出了一种用于压力隧道和竖井钢衬板安全性评估的新方法。

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《The international journal on hydropower & dams》 |2017年第3期|80-88|共9页
作者
A.J. Pachoud; Stucky Ltd; P.A. Manso; A.J. Schleiss;
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Switzerland;

Switzerland;

Laboratory of Hydraulic Constructions, Ecole Polytechnique Federale de Lausanne, Switzerland;

Laboratory of Hydraulic Constructions, Ecole Polytechnique Federale de Lausanne, Switzerland;

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机译：钢衬压力轴 - 外部压力的适当设计
2. Stresses and Displacements in Steel-Lined Pressure Tunnels and Shafts in Anisotropic Rock Under Quasi-Static Internal Water Pressure [J] . Pachoud Alexandre J., Schleiss Anton J. Rock Mechanics and Rock Engineering . 2016,第4期

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3. Design of Pressure Relief Valves for Protection of Steel-Lined Pressure Shafts and Tunnels Against Buckling During Emptying [J] . Anton J. Schleiss, Pedro A. Manso Rock Mechanics and Rock Engineering . 2012,第1期

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5. Methodology for assessment by regulatory bodies of the safety of existing steel offshore platforms. [D] . Aggarwal, Rajiv Kumar. 1991

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6. Critical Assessment of Techniques for the Description of the Phase Composition of Advanced High-Strength Steels [O] . Anna Knaislová, Darya Rudomilova, Pavel Novák, 2019

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7. Detection of Local Wall Stiffness Drop in Steel-Lined Pressure Tunnels and Shafts of Hydroelectric Power Plants Using Steep Pressure Wave Excitation and Wavelet Decomposition [O] . F. E. Hachem, A. J. Schleiss 2012

机译：利用陡峭的压力波激励和小波分解检测钢衬压力隧道局部壁刚度下降钢衬压力隧道和水力发电厂轴
8. Assessment of the Need for an Advanced High-Strength Chromium-Molybdenum Steel for Construction of Third-Generation Gasifier Pressure Vessels [R] . Swindeman, R. W., Thomas, R. D., Nanstad, R. K., 1984

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New methodology for safety assessment of steel-lined pressure shafts using high-strength steel

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