GFRP-花旗松胶合木夹芯桥面板受弯性能试验与结构设计

采用花旗松胶合木作为芯材，玻璃纤维增强复合材料（GFRP）作为面层制备夹芯结构桥面板，在对花旗松胶合木芯材和 GFRP 开展基本力学性能试验研究的基础上，开展了 GFRP-花旗松胶合木夹芯梁的受弯性能试验，得出了其荷载-跨中挠度曲线与 GFRP 荷载-跨中应变曲线，并对抗弯刚度测试值与理论计算值进行了对比；针对某 GFRP-花旗松胶合木桥面板，提出了完整的结构设计流程，给出了桥面板的合理设计参数。研究结果表明：GFRP-花旗松胶合木桥面板应用于钢梁-复合材料桥面板组合桥梁结构较为可行。

Experiment on Bending Capacity and Structural Design of GFRP-pseudotsuga Taxifolia Glulam Bridge Deck

The bridge panel of sandwich structure was manufactured by using pseudotsuga taxifolia glulam as core materials and glass fiber reinforced polymer （GFRP） as surface course . The bending experiment of GFRP-pseudotsuga taxifolia glulam beam was carried out based on basic mechanical property of pseudotsuga taxifolia glulam core materials and GFRP .From the bending experiment ,the load-midspan deflection curve and GFRP load-midspan strain curve were got ,and the test value was compared with theoretical value of bending stiffness .It brought up a whole structured design process of a sandwich structure bridge deck , and gave the design parameter of bridge deck .The study results show that using GFRP-pseudotsuga taxifolia glulam bridge deck into girder-composite bridge panel is feasible .