Phương pháp thực hành tính toán cốt đai chịu cắt của dầm bê tông cốt thép tiết diện chữ nhật

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Tác giả: Thái Hoàn Phạm, Quang Minh Phan

Ngôn ngữ: Vie

Ký hiệu phân loại: 624 Civil engineering

Thông tin xuất bản: Tạp chí Xây dựng 2023

Mô tả vật lý: 127-135

Bộ sưu tập: Metadata

ID: 409344

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Tóm tắt
Chủ đề

Bài báo đề xuất phương pháp thực hành tính toán cốt đai chịu lực cắt của dầm bê tông cốt thép tiết diện chữ nhật dưới tác dụng của tải trọng phân bố đều và tải trọng tập trung. Phương pháp được đề xuất dựa trên cơ sở tiêu chuẩn Thiết kế bê tông và bê tông cốt thép - Tiêu chuẩn thiết kế TCVN 5574:2018, kết hợp tham khảo điều kiện tính toán của một số tiêu chuẩn thiết kế kết cấu bê tông cốt thép tiên tiến trên thế giới như tiêu chuẩn Đức, châu Âu và Canada, trong đó cho phép tính toán cường độ trên tiết diện nghiêng mà không cần xem xét các tiết diện nghiêng khi xác định lực cắt do ngoại lực tác dụng. Phương pháp đề xuất cho phép thực hành tính toán cốt đai chịu lực cắt của dầm bê tông cốt thép tiết diện chữ nhật dưới tác dụng của tải trọng phân bố đều và tải tập trung một cách thuận tiện và dễ dàng với sai số tương đối nhỏ so với tính toán chính xác theo tiêu chuẩn. Sự đơn giản và thuận tiện cùng với sai số chấp nhận được của phương pháp phù hợp cho các kỹ sư trong thực hành tính toán kết cấu bê tông cốt thép., Tóm tắt tiếng anh, This study presents a practical method for stirrups design of reinforced concrete beam with rectangular cross section subjected to uniformly distributed and concentrated loads. The proposed method is based on the TCVN 5574:2018, combined with reference to the calculation conditions of some advanced reinforced concrete structure design standards in the world such as German, European and Canadian standards, which allows to calculate the strength on the inclined section without considering the inclined sections when determining the shear force due to the external force. The proposed method allows to conveniently and easily calculate the stirrups of reinforced concrete beams with rectangular cross section under the effect of uniformly distributed and concentrated loads with small relative error when compared to the exact method. The simplicity and convenience along with the acceptable error of the proposed method are suitable for engineers in the practice calculation of reinforced concrete structures.

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