A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for increasing flutter critical wind speed of ultra-large-span bridge, and reinforcing device
The invention relates to the technical field of bridge wind resistance, in particular to a method for improving the flutter critical wind speed of a super-large-span bridge, and a reinforcing device. The method comprises the following steps of firstly, a bridge flutter checking wind speed standard is reduced; secondly, the weather at the bridge is monitored, and when strong wind exceeding the wind speed standard in the first step is about to appear, the bridge is temporarily reinforced through a reinforcing device before the strong wind comes; and thirdly, after strong wind passes, the reinforcing device in the second step is dismantled. According to the method, the bridge flutter test wind speed standard is reduced, so that the construction cost is greatly reduced; temporary reinforcement is carried out only before strong wind comes, and then dismantling is carried out after the strong wind, so that daily navigation is not affected; when strong wind exceeding the designed wind resistance is encountered, the cost of a temporary reinforcing method is far lower than that of a bridge structure and other methods for permanently enhancing the wind resistance, and the construction cost is greatly saved.
本发明涉及桥梁抗风技术领域，尤其涉及一种提高超大跨度桥梁颤振临界风速的方法及加固装置，包括如下步骤：步骤一：降低桥梁颤振检验风速标准；步骤二：对桥梁处天气进行监测，当即将出现超过步骤一中风速标准的强风时，在强风来临前通过加固装置对桥梁临时加固；步骤三：在强风过去后，对步骤二中的加固装置进行拆除。本发明中，降低桥梁颤振检验风速标准，从而大幅降低工程造价；只在强风来临前进行临时加固，强风之后再拆除，不影响日常通航；遇到了超过其设计抗风能力的强风，采用临时加固的方法其费用也远小于对桥梁结构等方法去永久增强抗风能力所采用的费用，大大节省工程造价。
Method for increasing flutter critical wind speed of ultra-large-span bridge, and reinforcing device
The invention relates to the technical field of bridge wind resistance, in particular to a method for improving the flutter critical wind speed of a super-large-span bridge, and a reinforcing device. The method comprises the following steps of firstly, a bridge flutter checking wind speed standard is reduced; secondly, the weather at the bridge is monitored, and when strong wind exceeding the wind speed standard in the first step is about to appear, the bridge is temporarily reinforced through a reinforcing device before the strong wind comes; and thirdly, after strong wind passes, the reinforcing device in the second step is dismantled. According to the method, the bridge flutter test wind speed standard is reduced, so that the construction cost is greatly reduced; temporary reinforcement is carried out only before strong wind comes, and then dismantling is carried out after the strong wind, so that daily navigation is not affected; when strong wind exceeding the designed wind resistance is encountered, the cost of a temporary reinforcing method is far lower than that of a bridge structure and other methods for permanently enhancing the wind resistance, and the construction cost is greatly saved.
本发明涉及桥梁抗风技术领域，尤其涉及一种提高超大跨度桥梁颤振临界风速的方法及加固装置，包括如下步骤：步骤一：降低桥梁颤振检验风速标准；步骤二：对桥梁处天气进行监测，当即将出现超过步骤一中风速标准的强风时，在强风来临前通过加固装置对桥梁临时加固；步骤三：在强风过去后，对步骤二中的加固装置进行拆除。本发明中，降低桥梁颤振检验风速标准，从而大幅降低工程造价；只在强风来临前进行临时加固，强风之后再拆除，不影响日常通航；遇到了超过其设计抗风能力的强风，采用临时加固的方法其费用也远小于对桥梁结构等方法去永久增强抗风能力所采用的费用，大大节省工程造价。
Method for increasing flutter critical wind speed of ultra-large-span bridge, and reinforcing device
一种提高超大跨度桥梁颤振临界风速的方法及加固装置
XU FUYOU (author) / YING XUYONG (author) / DONG BOWEN (author) / XU JIAN (author) / ZHANG YUFENG (author) / ZHOU QIAN (author)
2021-07-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Self-adaptive control device for improving flutter critical wind speed of long-span bridge
| European Patent Office | 2024
A predictive critical flutter wind speed modeling for long-span bridges
| SAGE Publications | 2020
Large-span PC box girder bridge reinforcing structure and reinforcing method
| European Patent Office | 2022
Heaving Branch Coupled Flutter for Long Span Bridge
| British Library Conference Proceedings | 1998