Study on Static Load Test of Pre-tensioned Pre-casted U-Beam
SONG Yu-min1, WU Ding-jun2, HUANG Jian3
1.College of Urban Railway Transportation，Shanghai University of Engineering Science; 2. Department of Bridge Engineering, Tongji University; 3. Qingdao Metro Group Co., Ltd.
Abstract：
The schemes and testing methods of static load test can directly affect the reliability, accuracy and efficiency of test results. In this paper, taken pre-tensioned pre-casted U shaped beam in Qingdao rail transport as an example, some schemes of static load test was formulated and optimized, and a reasonable scheme and testing methods was selected by comparison. Then static load tests were carried out for pre-tensioned pre-casted U-beam, and rigidity, stresses and crack width were tested. Lastly, the test experimental results were analyzed, and the mechanical properties of U-beam were assessment. A certain technical support will be provided for the use of pre-tensioned pre-casted U-beam in the future.
