Discussion of “Commentary on the Tentative Recommendations for Cable-Stayed Bridge Structures”

1978 ◽  
Vol 104 (1) ◽  
pp. 234-236
Author(s):  
Larry L. Ichter
Keyword(s):  
Cable Stayed Bridge ◽  
Bridge Structures

Temperature distribution in different bridges types based on data from SHM systems

2021 ◽  
Author(s):  
Jan Biliszczuk ◽  
Maciej Hildebrand ◽  
Marco Teichgraeber ◽  
Hanna Onysyk
Keyword(s):  
Temperature Distribution ◽  
Monitoring Systems ◽  
Temperature Changes ◽  
Cable Stayed Bridge ◽  
Stay Cables ◽  
Bridge Structures ◽  
Temperature Impact ◽  
Materials Used ◽  
Long Term Observation

<p>Monitoring systems have given the possibility of varied and long-term observation of bridge structures. The paper prestents the analysis of temperature impact on various bridge elements. The data comes from three different large bridges in Poland, equipped with extensive monitoring systems, namely from an arch bridge in Puławy (built in 2008), cable-stayed bridge in Płock (built in 2005) and the cable-stayed bridge in Wrocław (built in 2011). After few years of observation an enormous and valuable database of measured parameters was stored. The analysis shows how temperature changes between individual bridge components (e.g. between decks, pylon and stay cables) affect the structure mechanical behaviour and whether the influence fulfil the standards’ recommendations. Due to various static schemes and materials used in the described bridges, individual and non-typical impact of thermal loads is expected.</p>

scholarly journals Bridge Carbon Emissions and Driving Factors Based on a Life-Cycle Assessment Case Study: Cable-Stayed Bridge over Hun He River in Liaoning, China

2020 ◽  
Vol 17 (16) ◽  
pp. 5953 ◽  
Author(s):  
ZhiWu Zhou ◽  
Julián Alcalá ◽  
Víctor Yepes
Keyword(s):  
Life Cycle ◽  
Environmental Impact ◽  
Building Materials ◽  
Future Research ◽  
Cable Stayed Bridge ◽  
Full Life Cycle ◽  
Global Environmental ◽  
Bridge Structures ◽  
Development Analysis

Due to the rapid growth of the construction industry’s global environmental impact, especially the environmental impact contribution of bridge structures, it is necessary to study the detailed environmental impact of bridges at each stage of the full life cycle, which can provide optimal data support for sustainable development analysis. In this work, the environmental impact case of a three-tower cable-stayed bridge was analyzed through openLCA software, and more than 23,680 groups of data were analyzed using Markov chain and other research methods. It was concluded that the cable-stayed bridge contributed the most to the global warming potential value, which was mainly concentrated in the operation and maintenance phases. The conclusion shows that controlling the exhaust pollution of passing vehicles and improving the durability of building materials were the key to reducing carbon contribution and are also important directions for future research.

scholarly journals Evaluation of the Wind-Resistant Performance of Long-Span Cable-Stayed Bridge Using the Monitoring Correlation between the Static Cross Wind and Its Displacement Response

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Gaoxin Wang ◽  
Youliang Ding ◽  
Dongming Feng ◽  
Jihong Ye
Keyword(s):  
Health Monitoring ◽  
Wavelet Packet ◽  
Identification Accuracy ◽  
Good Service ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Cross Correlation Analysis ◽  
Bridge Structures ◽  
Service State ◽  
Static Cross

The wind-resistant performance of existing long-span cable-stayed bridge structures will inevitably deteriorate due to concrete carbonation, reinforcement corrosion, accumulated fatigue damage, etc., which can threaten the entire bridge safety. However, few studies currently focus on assessing the wind-resistant performance of existing long-span cable-stayed bridge structures, and at present, no studies have revealed how to identify the deterioration of the wind-resistant performance using a bridge health-monitoring technique. Therefore, based on the health-monitoring system installed on the Sutong Cable-stayed Bridge, the monitoring wind field and GPS displacement are captured to analyze the wind-resistant performance. First, the correlation between static cross wind and transversal displacement is analyzed, which is nearly linear but also contains discrete points caused by environmental noise. Second, considering that the discrete points can decrease the identification accuracy, one new method called the cross-correlation analysis of wavelet packet coefficients is put forward to effectively remove the discrete points. Third, considering that the traditional function cannot match the monitoring correlation very well, some new fitting functions are thoroughly studied to determine the best function for fitting the monitoring correlation. Fourth, the abnormal variation in the monitoring correlation caused by a deterioration in the wind-resistant performance is studied, and the root-mean-square (RMS) variable, which represents the difference between a good service state and a deteriorated service state, is used as a detection indicator to identify the deterioration of wind-resistant performance. Finally, the monitoring data from ten months are selected to evaluate the wind-resistant performance of the Sutong Bridge, and the result shows that its wind-resistant performance was still in a good service state during these ten months.

scholarly journals Оperational state of Myanmar cable-stayed bridge structures

2019 ◽  
Vol 6 (4) ◽  
Author(s):  
Sherali Valiev ◽  
Maung Maung Vin Aung ◽  
Ilya Ovchinnikov
Keyword(s):  
Bearing Capacity ◽  
Road Network ◽  
Physical Design ◽  
Point Of View ◽  
Suspension Bridges ◽  
Cable Stayed Bridge ◽  
Bridge Structures ◽  
History Of ◽  
Cable Stayed Bridges ◽  
Average Durability

The features of the Myanmar road network are briefly reviewed, the country’s bridge park, which includes about 500 bridges, is analyzed in more detail, examples of various types of bridge structures used in Myanmar (arched, hanging, frame, truss, adjustable, cable-stayed) are given. Particular attention is paid to cable-stayed bridges, data on their condition according to the results of surveys conducted jointly with Japanese specialists is given, characteristic defects and damage to the bridges are given, and the reasons for their appearance are indicated. It is noted that the average durability of Myanmar bridges is 30–35 years. In conclusion, the history of the construction of cable-stayed bridges in the USSR and Russia is briefly reviewed, the most famous cable-stayed bridges of Russia of various years of construction and their parameters are listed/ The disadvantages of cable-stayed bridges from the point of view of their resistance to wind loads are analyzed and it is shown that cable-stayed bridges with large spans have insufficient bearing capacity. The reasons for local and global cable-stayed bridge failures (physical, design, technological) are considered. It is concluded that in the case of large spans, suspension bridges have significant advantages over cable-stayed.

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