Study on temperature characteristics of multi-tower cable-stayed bridge
Temperature effects have a great influence on the mechanical behavior of cable-stayed bridges, especially for long-span bridges, which have significant time-varying and spatial effects. In this paper, the temperature characteristics of multi-tower cable-stayed bridge are obtained by data acquisition...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Polish Academy of Sciences
2023-12-01
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| Series: | Archives of Civil Engineering |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/129789/PDF/art32_int.pdf |
| Summary: | Temperature effects have a great influence on the mechanical behavior of cable-stayed bridges, especially for long-span bridges, which have significant time-varying and spatial effects. In this paper, the temperature characteristics of multi-tower cable-stayed bridge are obtained by data acquisition with wireless acquisition module. The test results show that: the daily temperature-time curves of atmospheric temperature and structural temperature are similar to sinewaves with obvious peaks and troughs; structure temperature and atmospheric temperature have obvious hysteresis; longitudinal displacement, transverse displacement and vertical of mid-span beam are negatively correlated with atmospheric temperature; the temperature distribution of the cable tower is not uniform, and the maximum temperature difference of the section is 23.7°C considering 98% of the upper limit value; the longitudinal, transverse and vertical displacement of cable tower and the cable force is negatively correlated with atmospheric temperature, and the relationship between cable force and atmospheric temperature is a cubic function rather than linear function. |
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| ISSN: | 1230-2945 2300-3103 |