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中文摘要：
为了研究型钢高强高性能混凝土（SRHSHPC）梁的正截面承载力，对7榀不同跨度、剪跨比、含钢率及混凝土强度的型钢高强高性能混凝土粱进行了抗弯试验，分析了型钢高强高性能混凝土梁的破坏机理、粘结滑移、截面应力一应变以及荷载一挠度曲线等。试验结果表明：在加载初期，梁截面高度平均应变符合平截面假定，但到后期则不能很好地符合；型钢高强高性能混凝土梁受力过程中，型钢与混凝土界面有可能成为构件破坏的薄弱区而引发构件的不同破坏形态。最后，通过引入粘结滑移影响系数和截面对称性影响系数，提出了型钢高强高性能混凝土梁正截面承载力计算公式，其计算结果和试验结果吻合较好，可为相关设计提供参考。
英文摘要：
The beating capacity of steel reinforced high strength high performance concrete （ SRHS- HPC） beams was investigated through a bending test of 7 beam specimens with various span, shear span ratio, steel ratios and concrete strength. The failure process, bond-slip characteristic, stress- strain of cross section and load-deflection curve of SRHSHPC beams were analyzed. The test results showed that the strain along height of cross section is approximately agreed with the assumption of plane cross-section in early loading stage, but not in later stage. The interface between steel and concrete may be the weak zone of SRHSHPC beams, which caused different failure modes. Finally, the bond-slip influence coefficient and the interface symmetry coefficient were introduced to establish a formula for the calculation of bearing capacity in the design of SRHSHPC beams. The comparison showed that the calculation results agreed with the test results well. The results established in this paper can provide reference for the design.
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