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本文根据66条受集中荷载简支预应力混凝土迭合梁的试验资料,提出形式比较简单,符合性较好和应用方便的抗剪强度计算公式。公式表明,预应力迭合梁的抗剪强度比钢筋混凝土梁一般可提高20～30％。
Based on the test data of 66 simply supported prestressed concrete laminated beams under concentrated loads, this paper proposes a simple form, good consistency and convenient application of shear strength calculation formula. The formula shows that the shear strength of prestressed laminated beams can generally be increased by 20-30% compared with reinforced concrete beams.