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近二十多年来,许多国家对予应力混凝土梁的抗剪强度进行了不少研究。由于影响予应力混凝土梁抗剪强度的因素较多,虽然已进行了大量的试验研究工作,但这个研究课题至今还没有得到较好的解决。以各国钢筋混凝土设计规范为例,有的是考虑予应力混凝土梁较普通钢筋混凝土梁的抗剪强度有所提高,如美国钢筋混凝土规范(ACI—318—71),欧州混凝
In the past two decades, many countries have conducted many studies on the shear strength of prestressed concrete beams. Because there are many factors affecting the shear strength of prestressed concrete beams, although a large number of experimental studies have been conducted, this research topic has not yet been well solved. Taking the design specifications of reinforced concrete in various countries as an example, some consider that the shear strength of prestressed concrete beams is higher than that of ordinary reinforced concrete beams, such as the American Reinforced Concrete Specification (ACI-318-71), European Coagulation