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本文在预应力砼开洞梁抗剪强度的试验基础上,分析了影响开洞梁剪切强度的主要因素,提出了开洞梁弦杆剪力分配计算公式和抗剪强度设计公式的建议。建议公式的计算结果与试验结果符合较好。
Based on the test of shear strength of prestressed concrete beams with open holes, this paper analyzes the main factors that affect the shear strength of open beams, and proposes the calculation formulas of the shear distribution of the chords of open beams and the formulas of shear strength design. The formula’s calculation results are in good agreement with the test results.