近年来中国桥梁工程应用领域开始研究一种新型预应力混凝土梁——折线配筋先张法预应力混凝土梁。该文以四川遂宁至广安高速公路华签寺大桥30 m预制预应力混凝土T形梁为实例,对预制梁在破坏加载过程中的力学性能进行了测试,对其挠度、应变和裂缝发展形式进行了分析评价。 In recent years, China’s bridge engineering applications began to study a new type of prestressed concrete beams - pre-tensioned prestressed reinforced concrete beams. Taking the 30 m prefabricated prestressed concrete T-beam of Huabei Temple Bridge from Suining to Guang’an Expressway in Sichuan as an example, the mechanical properties of the prefabricated beam under failure load were tested. The deflection, strain and crack development patterns Analysis and evaluation.