【摘要】 为分析细石混凝土钢筋桁架楼承板双跨简支连续板的受弯性能以及极限承载力计算方法，对2块钢筋桁架排列方向不同的双跨连续板试件和1块现浇双跨连续板试件开展静力加载试验，分析各试件的破坏形态、承载能力等力学性能。研究结果表明，3个试件的破坏形态类似，属于典型的受弯破坏；钢筋桁架平行于跨度方向布置的试件承载能力与现浇连续板相当，钢筋桁架垂直于跨度方向布置的试件承载能力最弱，且在试验过程中未发现细石混凝土钢筋桁架楼承板叠合面出现滑移破坏现象，表明预制底板与后浇层混凝土之间具有良好的整体工作性能；基于塑性铰线理论并考虑薄膜效应的极限承载力计算方法计算的极限承载力与实际加载荷载值较为接近。更多还原

【Abstract】 To analyze the bending performance and ultimate bearing capacity calculation method of the double-span simply supported continuous slab with fine aggregate concrete reinforced steel bar truss floor slabs, static loading tests were conducted on two double-span continuous slab specimens with different steel bar truss arrangements and one cast-in-place double-span continuous slab specimen. The failure modes and mechanical properties such as bearing capacity of each specimen were analyzed. The research results show that the failure modes of the three specimens are similar and belong to typical bending failure. The bearing capacity of the specimen with the steel bar truss parallel to the span direction is comparable to that of the cast-in-place continuous slab, and the bearing capacity of the specimen with the steel bar truss perpendicular to the span direction is the weakest. During the test, no sliding failure of the composite surface of the fine aggregate concrete reinforced steel bar truss floor slab was found, indicating that the prefabricated bottom plate and the cast-in-place layer concrete have good overall working performance. The ultimate bearing capacity calculated by the ultimate bearing capacity calculation method based on the plastic hinge line theory and considering the membrane effect is close to the actual loading load value.更多还原