小角度缠绕复合材料护岸管桩抗弯性能试验与设计

Test and design of bending performance of small-angle winding.composite revetment pipe piles

本文提出一种新型复合材料护岸管桩。该护岸管桩由纤维缠绕工艺制备的复合材料缠绕管制成。通过四点弯曲试验,得到试件的破坏模式以及荷载-位移关系,以此分析缠绕角度±55°、±15°以及是否浇筑混凝土对护岸管桩抗弯性能影响。结果表明:纤维缠绕角度由55°减小为15°与浇筑混凝土都能极大提高复合材料护岸管桩的刚度和抗弯承载力。在此基础上进行复合材料护岸管桩嵌固端深度计算公式推导,并给出护岸管桩的设计流程以及应用建议。这为之后复合材料护岸管桩应用于护岸工程提供了参考。

This paper proposes a new.composite revetment pipe pile.The revetment pipe pile is made of.composite winding pipe prepared by the fiber winding process.Through the four-point bending test,the failure mode and load-displacement relationship of the specimen were obtained,and the influence of winding angle ±55°,±15° and whether concrete was poured on the bending performance of the revetment pipe pile was analyzed.The results show that the reduction of the fiber winding angle from 55° to 15° and the pouring of concrete can greatly improve the stiffness and bending bearing capacity of the.composite revetment pipe pile.Then,the calculation formula of the embedded end depth of.composite revetment pipe piles is derived on this basis,and the design process and application suggestions of revetment pipe piles are given.This provides a reference for the later application of.composite revetment pipe piles in revetment projects.