Stochastic dynamic transient gusty wind effect on the sliding and overturning of quayside container cranes

Su, Ning; Peng, Shitao; Nie, Hong

doi:10.1080/15732479.2020.1809465

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…Wind gusts are strong, short-duration wind events that are measured by the average wind speed over several seconds. Wind gusts exceeding a certain threshold have a significant impact on housing, transportation, and/or maritime production (Sheridan, 2018;Teoh et al, 2019;Su et al, 2021). Accurate and timely wind gust forecast information can effectively reduce the loss of life and property.…”

Section: Introductionmentioning

confidence: 99%

Establishment of Wind Gust Estimation Equation in Bohai Sea

Huang

Dai

et al. 2022

Front. Earth Sci.

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Wind gusts over the ocean can have a great influence on maritime transport and production operations. However, owing to the scarcity of marine observation data and the complex causes of wind gusts, the estimation and forecasting of gusts at sea are even more difficult. In this study, a gust estimation equation applicable to the Bohai Sea is established based on observation and reanalysis data, with representative observation stations on the coast and offshore in the Bohai Sea. During the process, partial correlation analysis and a significance test of correlation coefficient differences were used to further clarify the influence of average wind speed and vertical wind shear at different heights on wind gusts. The final gust estimation equation includes a mean wind speed term, a turbulence term, and a convection term, which are statistically significant contributors; in addition, there are clear physical meanings. Comparing two gust factor methods in this study, the average errors and fitting errors of the least squares gust estimation equation are the smallest. For wind gusts between 10 and 26 m/s, the fitting error in the gust estimation equation is 7.68–12.25% and 21.10–30.08% lower than those of the two gust factor methods in this study. The gust estimation equation better reflects the difference of wind gusts typical under different average wind speeds and vertical wind shear conditions, so a better prediction for wind gusts can be achieved.

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Section: Introductionmentioning

confidence: 99%

Establishment of Wind Gust Estimation Equation in Bohai Sea

Huang

Dai

et al. 2022

Front. Earth Sci.

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“…Wind gusts are short-lived extremes within the spectrum of wind variations that are typically responsible for the worst damage caused by winds [1] . Strong wind gusts can damage buildings, bridges, aircraft, and trains and interrupt electric power distribution, air traffic, waterway transport, and port operations [2][3][4][5] . Accurate forecasts of peak wind gusts are crucial for saving lives, reducing economic losses, and preserving construction.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Wind Gust and Associated Gust-factor Model for the Gust-producing Weather over the Northern South China Sea

HUANG,

LIU,

LIU

2023

JTM

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Wind gusts are common environmental hazards that can damage buildings, bridges, aircraft, and cruise ships and interrupt electric power distribution, air traffic, waterway transport and port operations. Accurately predicting peak wind gusts in numerical models is essential for saving lives and preventing economic losses. This study investigates the climatology of peak wind gusts and their associated gust factors (GFs) using observations in the coastal and open ocean of the northern South China Sea (NSCS), where severe gust-producing weather occurs throughout the year. The stratified climatology demonstrates that the peak wind gust and GF vary with seasons and particularly with weather types. Based on the inversely proportional relationship between the GF and mean wind speed (MWS), a variety of GF models are constructed through least squares regression analysis. Peak gust speed (PGS) forecasts are obtained through the GF models by multiplying the GFs by observed wind speeds rather than forecasted wind speeds. The errors are thus entirely due to the representation of the GF models. The GF models are improved with weather-adaptive GFs, as evaluated by the stratified MWS. Nevertheless, these weather-adaptive GF models show negative bias for predicting stronger PGSs due to insufficient data representation of the extreme wind gusts. The evaluation of the above models provides insight into maximizing the performance of GF models. This study further proposes a stratified process for forecasting peak wind gusts for routine operations.

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“…Based on the aerodynamic data obtained from wind tunnel tests, the dynamic transient wind-induced sliding force and tilting moment response of container cranes on shore were analyzed. Aiming at the problems of a lack of an online data simulation test environment, poor openness of data collection, and a low degree of data visualization in the online control process of port cranes, some scholars proposed a port crane operation status monitoring system framework based on digital twins [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Specific Point in Time Excitation Control Method for Spatial Multi-Degree-of-Freedom Systems under Continuous Operation

Zhang,

Qin

2023

Electronics

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The port container gantry crane studied in this paper is a four-degree-of-freedom spatial continuous system. In actual work, in order to make the container transfer smoothly, the response of the whole system needs to be accurately predicted and timely adjusted. The whole system is divided into rotary mechanism, lifting mechanism, lifting trolley mechanism, and big cart mechanism for detailed analysis. By constructing the field transfer matrix, a one-dimensional wave equation of continuous system and the Lagrange equation with redundant parameters, the response of each subsystem is solved precisely. The results of the study found that in some periods, the swing of the container was too large. In order to improve the safety and stability of transmission, an active control method of specific point in time excitation (SPE) is proposed for the first time. This method predicts the swing amplitude of the container in advance using the response results of the numerical model. When the set response interval is exceeded, the external excitation intervention can effectively inhibit the moving range of the container in the transit process. Finally, the results are compared with the simulation model to achieve the experimental purpose. It is in line with the expected experimental effect.

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Stochastic dynamic transient gusty wind effect on the sliding and overturning of quayside container cranes

Cited by 11 publications

References 22 publications

Establishment of Wind Gust Estimation Equation in Bohai Sea

Establishment of Wind Gust Estimation Equation in Bohai Sea

Adaptive Wind Gust and Associated Gust-factor Model for the Gust-producing Weather over the Northern South China Sea

Specific Point in Time Excitation Control Method for Spatial Multi-Degree-of-Freedom Systems under Continuous Operation

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