Method and device for analyzing driving stability of bridge deck
An analysis method and stability technology, which is applied in the field of driving stability analysis, can solve problems such as reduced comfort, achieve accurate hindrance, ensure accuracy, and improve safety
Active Publication Date: 2020-04-10
CHINA HIGHWAY ENG CONSULTING GRP CO LTD +2
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Problems solved by technology
Under the action of side wind, the comfort of the driving vehicle is not only greatly reduced, but also there are safety problems such as roll and sideslip
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[0062] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0063] The embodiment of the present invention provides a method for analyzing the driving stability of a bridge deck, figure 1 It is a schematic diagram of the steps of the method for analyzing the driving stability of the bridge deck in the embodiment of the present invention, as shown in figure 1 As shown, the method includes the steps of:
[0064] S1, carry out wind tunnel test to described model bridge, determine the equivalent wind speed of driving on described model bridge, calculate wind speed reduction factor and moment reduction factor
[0065] S2. For a specific vehicle model, abstract its force model in the wind environment according to its size and force characteristics;
[0066] S3, carry out roll and si...
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The invention provides a method for analyzing the driving stability of a bridge deck in a wind environment. The method comprises the steps of: modeling a preset bridge, and determining a model bridge;carrying out a wind tunnel test on the model bridge, measuring the wind speeds of all lanes on the bridge deck at different heights by arranging sensors, and calculating an equivalent wind speed Ue;and introducing two concepts of a wind speed reduction coefficient lambda and a moment reduction coefficient gamma to represent the weakening effect of a bridge structure on lateral wind. On the basisof a wind tunnel experiment on the model bridge, the wind speed reduction coefficient and the moment reduction coefficient are introduced, and a calculation formula of a driving roll and sideslip critical wind speed based on the above-mentioned parameters is deduced; and an evaluation method for driving stability is given in combination with specification and related regulations, and the drivingsafety is improved.
Description
technical field [0001] The invention relates to the field of driving stability analysis, in particular to a method and device for analyzing the driving stability of a bridge deck. Background technique [0002] With the rapid development of social economy and transportation industry, more and more long-span bridges have been built, and a considerable part of them are bridges spanning wide rivers or bays. Due to navigation requirements, such long-span bridges often have high deck elevations and high deck design wind speeds, which means that vehicles traveling on the bridge will suffer greater crosswind effects. Under the action of crosswind, the comfort of the driving vehicle is not only greatly reduced, but also there are safety problems such as roll and sideslip. Long-span bridges often belong to first-class highways, and there are various types of vehicles passing through them at high speeds, which makes the influence of crosswind on vehicle driving stability very prominen...
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IPC IPC(8): G06F30/20G06F119/14
CPCG06F2119/06G06F30/20Y02T90/00
Inventor 上官甦周奇刘闯吴敬武孙平宽白墨李兆鹏张迎春吕晓宇彭翀张春符策源刘文张汉生艾佑元王宇何为许笛徐峰李殿斌张彦林李勃秦峰
Owner CHINA HIGHWAY ENG CONSULTING GRP CO LTD