en.Wedoany.com Reported - Recently, the static load test on the Ma'anshan Yangtze River Rail-cum-Road Bridge, a key control project of the Chaohu-Ma'anshan High-Speed Railway, was completed. This static load test is a component of the load testing conducted before large bridges open to traffic. All tests were carried out between 22:00 and 4:00 the following morning to minimize the interference of day-night temperature differences on the test data.
Starting from April 21, loading vehicles successively moved onto the bridge via lifting stations, and the static load test was carried out in an orderly manner as planned. The test team deployed 524 and 337 measurement points on the main navigation channel bridge and the auxiliary navigation channel bridge, respectively, to systematically verify 9 key structural indicators, including the overall stiffness of the bridge, main girder stress, cable force, and bearing displacement. A total of 74 data sets, comprising over 30,000 data entries, were collected during this test. The test results indicate that indicators such as the overall vertical stiffness of the main and auxiliary navigation channel bridges meet the requirements.
Load testing is divided into completed bridge state inspection, static load test, and dynamic load test. In the static load test, the test load is placed at predetermined loading positions to measure parameters such as static strain and static displacement, in order to understand the structural load-bearing characteristics, vertical stiffness, and beam-end rotation angle of the bridge, thereby determining whether the structure's strength and stiffness under static load meet the requirements. The dynamic load test for the bridge is planned to be carried out in July this year.
The Ma'anshan Yangtze River Rail-cum-Road Bridge is located in Anhui Province, China, and serves as the key control project of the Chaohu-Ma'anshan High-Speed Railway. The main line of the Chaohu-Ma'anshan High-Speed Railway has a total length of 61 kilometers and a design speed of 350 kilometers per hour. It starts from Chaohu East Station, heading east through Hanshan County, He County, Zhengpugang New District, Dangtu County, the Economic and Technological Development Zone, Yushan District, and Huashan District, before terminating at Ma'anshan East Station. Along the line, there are 5 stations: Chaohu East, Hanshan, Zhengpugang, Ma'anshan South, and Ma'anshan East. The Chaohu-Ma'anshan High-Speed Railway connects with the Hefei-Hangzhou High-Speed Railway at Chaohu East Station and with the Nanjing-Anqing High-Speed Railway at Ma'anshan East Station. It serves as a direct link between Ma'anshan and the provincial capital, Hefei, and is expected to meet the conditions for operational opening in September this year.
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