Given the excellent crack resistance performance of steel fiber-reinforced self-stressing concrete (SFRSSC), the bending performance of some composite beams with SFRSSC laminated layers was studied. The experiment conducted in this study comprised a single-span composite beam test (including 3 test beams) and a two-span continuous composite beam test (including 2 test beams). All the test beams were T-shaped. The cracking load, yielding load, and ultimate load of all the test beams were recorded and comparatively analyzed. Experimental results showed that the cracking load of the test beam with an SFRSSC laminated layer is significantly increased. Mechanical analysis and numerical simulation of the test beams were conducted, and the obtained results agreed well with the experimental results. The composite beams under different working conditions were also numerically simulated. Through the simulation, reasonable ranges of precompressive stress and length of the SFRSSC laminated layer at intermediate support of continuous composite beam were obtained.

中文翻译：

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纤维增强自应力混凝土T形组合梁的抗弯性能

鉴于钢纤维增强自应力混凝土（SFRSSC）的优异抗裂性能，研究了一些带有SFRSSC层压层的复合梁的抗弯性能。在这项研究中进行的实验包括一个单跨复合梁测试（包括3个测试梁）和一个双跨连续复合梁测试（包括2个测试梁）。所有测试梁均为T形。记录并比较分析所有测试梁的开裂荷载，屈服荷载和极限荷载。实验结果表明，带有SFRSSC层压层的测试梁的破裂载荷显着增加。对试验梁进行了力学分析和数值模拟，所得结果与实验结果吻合良好。还对不同工况下的组合梁进行了数值模拟。通过模拟，获得了合理的预压应力范围和连续复合梁中间支撑处的SFRSSC层压层的长度。