A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Main girder structure for improving flutter critical wind speed and design method thereof
The invention relates to a main beam structure for improving flutter critical wind speed, when only incoming flow of wind in one direction exists, the main beam structure comprises two first box beams, a second box beam and a plurality of first cross beams, the plurality of first cross beams are arranged at intervals, and the width of the first box beams is smaller than that of the second box beam so as to form an asymmetric separated box beam structure; when incoming flows of wind in two directions exist, the main beam structure further comprises a third box beam, a plurality of second cross beams and a plurality of third cross beams which are arranged between the first box beam and the second box beam at intervals. According to the main beam structure capable of improving the flutter critical wind speed, the first box beam and the second box beam are arranged to be of an asymmetric separated box beam structure, the gap is formed between the first box beam and the second box beam, the main beam structure can bear torque, and in a quite large attack angle range, the aerodynamic performance better than that of a conventional symmetrically-arranged separated double box is obtained; and the flutter critical wind speed is higher. When a wind tunnel test is carried out, the change amplitude of the girder shape and pneumatic measures is reduced, and the workload of the wind tunnel test is reduced.
本申请涉及一种提高颤振临界风速的主梁结构，当仅有一个方向风的来流时，主梁结构包括两个第一箱梁和第二箱梁、多个第一横梁，多个第一横梁间隔设置，第一箱梁小于第二箱梁的宽度以形成不对称的分离箱梁结构；当有两个方向风的来流时，主梁结构还包括在第一箱梁和第二箱梁之间间隔设置的第三箱梁、多个第二横梁、多个第三横梁。本申请提供一种提高颤振临界风速的主梁结构，将第一箱梁和第二箱梁设置为不对称的分离箱梁结构，且二者之间具有空隙，主梁结构会受到扭矩，且在相当大的一个攻角范围，获得比常规的对称布置分离双箱更好的气动性能，颤振临界风速更高。进行风洞试验时，减小对于主梁外形和气动措施的改变幅度，降低风洞试验的工作量。
Main girder structure for improving flutter critical wind speed and design method thereof
The invention relates to a main beam structure for improving flutter critical wind speed, when only incoming flow of wind in one direction exists, the main beam structure comprises two first box beams, a second box beam and a plurality of first cross beams, the plurality of first cross beams are arranged at intervals, and the width of the first box beams is smaller than that of the second box beam so as to form an asymmetric separated box beam structure; when incoming flows of wind in two directions exist, the main beam structure further comprises a third box beam, a plurality of second cross beams and a plurality of third cross beams which are arranged between the first box beam and the second box beam at intervals. According to the main beam structure capable of improving the flutter critical wind speed, the first box beam and the second box beam are arranged to be of an asymmetric separated box beam structure, the gap is formed between the first box beam and the second box beam, the main beam structure can bear torque, and in a quite large attack angle range, the aerodynamic performance better than that of a conventional symmetrically-arranged separated double box is obtained; and the flutter critical wind speed is higher. When a wind tunnel test is carried out, the change amplitude of the girder shape and pneumatic measures is reduced, and the workload of the wind tunnel test is reduced.
本申请涉及一种提高颤振临界风速的主梁结构，当仅有一个方向风的来流时，主梁结构包括两个第一箱梁和第二箱梁、多个第一横梁，多个第一横梁间隔设置，第一箱梁小于第二箱梁的宽度以形成不对称的分离箱梁结构；当有两个方向风的来流时，主梁结构还包括在第一箱梁和第二箱梁之间间隔设置的第三箱梁、多个第二横梁、多个第三横梁。本申请提供一种提高颤振临界风速的主梁结构，将第一箱梁和第二箱梁设置为不对称的分离箱梁结构，且二者之间具有空隙，主梁结构会受到扭矩，且在相当大的一个攻角范围，获得比常规的对称布置分离双箱更好的气动性能，颤振临界风速更高。进行风洞试验时，减小对于主梁外形和气动措施的改变幅度，降低风洞试验的工作量。
Main girder structure for improving flutter critical wind speed and design method thereof
一种提高颤振临界风速的主梁结构及其设计方法
XIAO HAIZHU (author) / HE DONGSHENG (author) / XIE LANBO (author) / GAO ZONGYU (author) / LIU JUNFENG (author) / PAN TAO (author) / QIU YUANXI (author)
2024-05-31
Patent
Electronic Resource
Chinese
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