Study on temperature characteristics of multi-tower cable-stayed bridge
Li Wei 3
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Shandong High-speed Group Co., Ltd., No. 0, Longding Road, Jinan, China
Geotechnical and Structural Engineering Research Center, Shandong University
Shandong Expressway Jinan West Ring Road Co., Ltd, No. 15551, Jingshi Road, Jinan, China
Submission date: 2023-03-08
Final revision date: 2023-06-17
Acceptance date: 2023-08-29
Publication date: 2023-12-21
Archives of Civil Engineering 2023;4(4):535-548
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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