Nghiên cứu kháng dao động cho bồn chứa chất lỏng lớn chịu ảnh hưởng của động đất=Study on sloshing resistance for large liquid storage tank subjected to seismic excitation

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Văn Ninh Nguyễn, Văn Tùng Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Xây dựng, 2024

Mô tả vật lý: tr.124

Bộ sưu tập: Báo, Tạp chí

ID: 478696

Thêm vào giỏ

Với sự phát triển bùng nổ của nền kinh tế Việt Nam, nhu cầu về năng lượng như dầu mỏ đang tăng lên đáng kể và bể chứa thẳng đứng là phương tiện lưu trữ năng lượng quan trọng nhất và nhu cầu về chúng cũng ngày càng tăng. Là kho chứa vật liệu dễ cháy nổ, khi xảy ra hư hỏng không chỉ trực tiếp gây ra những thảm họa nghiêm trọng như hỏa hoạn mà còn gây ra những thảm họa khác như ô nhiễm môi trường. Vì vậy, việc tiến hành nghiên cứu động đất trên bể chứa chất lỏng có giá trị thực tiễn rất lớn. Khi xảy ra động đất mạnh, chất lỏng bị va đập vào bể chứa chất lỏng sẽ ảnh hưởng xấu đến kết cấu bể. Để giải quyết những vấn đề như vậy, một thiết bị vách ngăn hình khuyên có thể được lắp đặt trong bể chứa chất lỏng để kiểm soát phản ứng trượt chất lỏng. Để nghiên cứu ảnh hưởng của vị trí và kích thước tấm vách ngăn trong bể chứa chất lỏng đến phản ứng va đập của chất lỏng, nghiên cứu này dựa trên phần mềm phần tử hữu hạn tổng quát lớn ADINA. Giả sử chất lỏng là chất lỏng nhớt và không thể nén được, vách ngăn có hình dạng như một tấm tròn mỏng và vuông góc với thành bể, đồng thời thiết lập hệ thống tương tác nền-bể-chất lỏng. Đầu tiên, phân tích tĩnh và phương thức của hệ thống bể chứa chất lỏng không có tấm vách ngăn được thực hiện và sau đó kết quả được so sánh với kết quả của các chỉ tiêu liên quan. Ngoài ra, việc phân tích tham số của phản ứng va đập của chất lỏng trong bể có vách ngăn dưới tác dụng kích thích địa chấn ngang cũng được thực hiện một cách kỹ lưỡng. Từ khóa: Tấm vách ngăn
bể chứa chất lỏng
kháng dao động
anh hưởng động đất.With the booming development of Viet Nam's economy, the demand for energy such as petroleum is growing dramatically, and the vertical storage tanks are the most important energy storagefacilities, and their demand is also growing. As a facility for storing flammable and explosive materials, once damage occurs, it not only causes directly serious disasters such as fires, but also causes other disasters such as environmental pollutions. Therefore, it is of great practical value to conduct seismic research on liquid storage tanks. Under strong earthquakes, liquid sloshing in the liquid storage tank will adversely affect the tank structure. In order to solve such problems, an annular baffle device can be installed in the liquid storage tank to control the liquid sloshing response. In order to investigate the influence of the baffle plate position and size in the liquid storage tank on the liquid sloshing response, this study is based on the large general finite element software ADINA. Assuming that the liquid is a viscous and incompressible fluid, the baffle is shaped as a thin circular plate and perpendicular to the tank wall, and establish a foundation-tankliquid interaction system. Firstly, the static and modal analysis of the liquid storage tank system without baffle plate is carried out and then the results are compared with the results of relevantcriterions. Moreover, the parametric analysis of the liquid sloshing response in the baffled tank under horizontal seismic excitation is carried out thoroughly. Keywords: Baffle plate
liquid storage tank
sloshing response
seismic excitation.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR