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桥梁的上部结构采用新型混杂纤维增强复合材料与混凝土结构系统。这种系统是一种具有耐久性、结构合理和成本低的混合系统,它充分利用了纤维增强复合材料与混凝土材料之间固有和互补的特征,由纤维增强复合单元外包构成并在受压区放置混凝土薄层。对一跨长18·3m的简支单跨单孔原型桥的上部结构进行设计,通过试验和计算对结构的性能进行分析。制作了1/4原型大小的模型,对模型进行一系列荷载试验,包括破坏性试验和非破坏性试验。试验和计算分析的结果证实所提出的混杂桥上部结构系统从结构工程的角度具有良好的性能。此外,通过详细的线性有限元分析能够预测不同工况下试件的性能。
The superstructure of the bridge uses a new hybrid fiber reinforced composite material and concrete structural system. This system is a hybrid system with durability, reasonable structure and low cost. It makes full use of the inherent and complementary features of fiber reinforced composite materials and concrete materials, which are composed of fiber reinforced composite unit and outsourced in the compression zone Place a thin layer of concrete. The design of the superstructure of a simple supported single-span single-hole prototyping bridge with a length of 18.3 m was conducted. The performance of the structure was analyzed through experiments and calculations. A prototype of 1/4 prototype size was made and the model was subjected to a series of load tests including destructive tests and non-destructive tests. Experimental and computational analysis results confirm that the proposed hybrid bridge superstructure system has good performance from the perspective of structural engineering. In addition, the performance of specimens under different operating conditions can be predicted through detailed linear finite element analysis.