Study on temperature characteristics of multi-tower cable-stayed bridge
| Autor: | Liu Chengyuan, Han Zhuowei, Li Wei, Zhao Lin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Archives of Civil Engineering, Vol vol. 69, Iss No 4 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1230-2945 2300-3103 |
| DOI: | 10.24425/ace.2023.147675 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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