Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Study on Mechanical Properties of Segmental Precast Assembled Concrete T-section Beams
The division of sections makes multiple joints in the beam, and also prevents the longitudinal reinforcement from being continuously arranged, resulting in a discontinuous local mechanical behavior of the beam at the joint location. The number of key-joints at the joints and the position of key-joints are used as variable parameters for the study. Four test beams were designed, including one single, one double, and one combined key-joint T-section beam and one integral beam. The mechanical properties of each type of test beam were judged according to the load-deflection curves in the span of the static load test, the damage characteristics of the test beams, the law of concrete stress changes along the beam height, and the stress changes of prestressing strands during the test. The results show that increasing the number of key-joints (from single to double) can improve the load-carrying capacity of the test beam within a certain range. Under the same conditions, the deflection of the integral beam is the smallest, followed by double, combined, and single key-joint segmental T-section beam; the strain of concrete at both sides of the B-joint is the largest for single key-joint segmental T-section beam, followed by combined key-joint and double key-joint segmental T-section beam; and the strain at the span center position is the largest for integral T-section beam, followed by single key-joint, combined key-joint, and double key-joint segmental T-section beam.
Experimental Study on Mechanical Properties of Segmental Precast Assembled Concrete T-section Beams
The division of sections makes multiple joints in the beam, and also prevents the longitudinal reinforcement from being continuously arranged, resulting in a discontinuous local mechanical behavior of the beam at the joint location. The number of key-joints at the joints and the position of key-joints are used as variable parameters for the study. Four test beams were designed, including one single, one double, and one combined key-joint T-section beam and one integral beam. The mechanical properties of each type of test beam were judged according to the load-deflection curves in the span of the static load test, the damage characteristics of the test beams, the law of concrete stress changes along the beam height, and the stress changes of prestressing strands during the test. The results show that increasing the number of key-joints (from single to double) can improve the load-carrying capacity of the test beam within a certain range. Under the same conditions, the deflection of the integral beam is the smallest, followed by double, combined, and single key-joint segmental T-section beam; the strain of concrete at both sides of the B-joint is the largest for single key-joint segmental T-section beam, followed by combined key-joint and double key-joint segmental T-section beam; and the strain at the span center position is the largest for integral T-section beam, followed by single key-joint, combined key-joint, and double key-joint segmental T-section beam.
Experimental Study on Mechanical Properties of Segmental Precast Assembled Concrete T-section Beams
Sustain. Civil Infrastruct.
Yuan, Bingxiang (Herausgeber:in) / Bilgin, Hüseyin (Herausgeber:in) / Luo, Qingzi (Herausgeber:in) / Han, Zejun (Herausgeber:in) / Yang, Xueqiang (Herausgeber:in) / Xun, Jingchuan (Autor:in) / Bu, Jianqing (Autor:in) / Meng, Lingpei (Autor:in) / Zhang, Zizhuo (Autor:in) / Guo, Zhibo (Autor:in)
International Conference on Civil Architecture and Structural Engineering ; 2024 ; Guangzhou, China
28.10.2024
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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