Xác định tải trọng cầu trục tác dụng lên nhà công nghiệp một tầng theo en 1991-3=Determination of crane loads acting on single-storey industrial buildings according to en 1991-3

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Tác giả: Việt Hưng Đặng, Văn Thuật Đinh, Long Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học công nghệ xây dựng (Đại học Xây dựng Hà Nội), 2024

Mô tả vật lý: tr.66-78

Bộ sưu tập: Metadata

ID: 225454

Thêm vào giỏ

Bài báo trình bày các bước xác định tải trọng cầu trục tác dụng lên nhà công nghiệp một tầng theo EN 1991-3, bao gồm việc xác định: (i) tải trọng lớn nhất và nhỏ nhất tại các bánh xe cầu trục truyền lên ray theo phương đứng tương ứng với trọng lượng của cầu trục, xe con và vật nâng, cũng như vị trí của xe con và (ii) tải trọng lớn nhất tại các bánh xe cầu trục tác dụng theo phương ngang tương ứng với gia tốc của cầu trục, gia tốc của xe con và cầu trục bị lệch hướng. Bên cạnh đó, một số ví dụ tính toán khảo sát được minh hoạ cho trường hợp cầu trục có bốn bánh xe. Đồng thời, một số nhận xét được đưa ra cho việc xác định tải trọng lớn nhất theo phương đứng và phương ngang tại các bánh xe, cũng như việc xác định tải trọng cầu trục tác dụng lên cột khung. Kết quả tính đã chỉ ra rằng tải trọng cầu trục tác dụng lên cột khung theo phương ngang nhà do cầu trục bị lệch hướng có giá trị lớn hơn khá nhiều so với các trường hợp do gia tốc của cầu trục và gia tốc của xe con gây ra.The paper presents the steps to determine the crane loads acting on single-storey industrial buildings according to EN 1991-3, including determination of (i) the maximum and minimum loads per wheels of the crane which are vertically transmitted on rails corresponding to self-weights of the crane, crab and hoist load as well as the position of the crab and (ii) the maximum loads per wheels of the crane which are horizontally transmitted on rails corresponding to accelerations and decelerations of the crane and crab as well as skewing of the crane. In addition, examples for investigation are presented for the case of overhead travelling cranes with four wheels for industrial buildings. Several comments were made on the determination of the vertical and horizontal pressures at the wheels, as well as that of the crane loads acting on a frame column. The calculation results showed that the crane loads acting on the column in the horizontal direction caused by skewing of the crane are significantly larger than those caused by the accelerations and decelerations of the crane and crab.

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