Abstract This paper experimentally and numerically investigated the flexural behavior of steel-laminated concrete composite girders. The laminated concrete deck consists of a reinforced concrete (RC) layer and an ultra-high-performance concrete (UHPC) layer, and the resulting steel-laminated concrete composite girder is referred to as S-RC-UHPC girder. Experimental tests were first conducted to compare the flexural behavior of three composite girders, i.e., steel-reinforced concrete (S-RC) girder, steel-ultra high performance concrete (S-UHPC) girder, and S-RC-UHPC girder. The test results confirm the validity of using S-RC-UHPC girders. Detailed 3D finite element (FEM) model is then developed and benchmarked. The benchmarked model can be used to further investigate the flexural behavior of S-RC-UHPC girders.

中文翻译：

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钢夹层混凝土（RC和UHPC）组合梁试验行为与分析

摘要 本文通过实验和数值方法研究了钢叠层混凝土组合梁的抗弯性能。层压混凝土桥面板由钢筋混凝土（RC）层和超高性能混凝土（UHPC）层组成，由此产生的钢-层压混凝土组合梁称为S-RC-UHPC梁。首先进行了试验测试，以比较三种复合梁的弯曲行为，即钢筋混凝土 (S-RC) 梁、钢-超高性能混凝土 (S-UHPC) 梁和 S-RC-UHPC 梁。测试结果证实了使用 S-RC-UHPC 梁的有效性。然后开发详细的 3D 有限元 (FEM) 模型并进行基准测试。基准模型可用于进一步研究 S-RC-UHPC 梁的弯曲行为。