Modeling and simulation of high-frequency vibration of headrace tunnel in a pumped storage power station considering imperfect bounding condition

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-02-06 DOI:10.1016/j.tws.2025.113021

Xiuwei Yang , Jijian Lian , Haijun Wang , Xiaoqun Wang

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引用次数: 0

Abstract

High-frequency vibration (HFV) is a recently reported phenomenon in the headrace tunnel of pumped storage power stations (PSPS). These vibrations propagate through the upstream mountain, generating severe noise on the surface and disrupting the lives of local residents. In some cases, it may be necessary to relocate these residents, which increases the secondary costs associated with constructing PSPS. Therefore, modeling and predicting the vibration intensity of the headrace tunnel is crucial for the engineering design and stable operation of these facilities. In this study, a numerical model is developed to simulate the HFV response of the headrace tunnel, considering the interactions between the fluid, pipe, and surrounding rock. The interface between the pipe and surrounding rock is normally imperfectly bounded due to the existence of uneven surfaces, waterproof layers and interstices, and so on. The linear spring model is introduced to describe these imperfect characteristics. This study provides a strategy for determining the spring constants, which can be used to estimate the bonding degree between the pipe and the surrounding rock. The vibration response of the headrace tunnel is investigated based on the data from an actual PSPS, and the dominant vibration characteristics are analyzed.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.