钢—混双面结合梁负弯矩区抗弯强度计算探讨

Calculation of the Negative Bending Moment Strength of the Double Continuous Composite Beams

对钢—混双面结合连续梁负弯矩区抗弯强度进行了研究,并对梁截面塑性中和轴位于钢梁腹板、钢梁受压翼缘及混凝土受压翼缘的几种可能出现情况,分别推导得到了负弯矩区抗弯强度计算公式。初步了解和认识了这种新型结构的性能,有利于研究工作的进一步展开。

The double continuous composite beam is a new system, which is different from other structures such as the concrete, steel or composite structures. Besides the concrete roadway slab, there is also a concrete bottom slab at the haunches over the main piers. In this paper, the authors analyze its bending strength of the zone, which is subject to negative moment. A preliminary insight into the mechanical behavior of this system is gained. And this will help further research.