论文部分内容阅读
为了评价加铺碳纤维桥面板与桥面铺装结构层间的粘结性能,利用拉拔试验和剪切试验,研究了3种界面形式对层间粘结强度的影响,以及3种界面形式层间粘结强度随不同因素作用的变化规律,建立了层间粘结强度与剪切强度的关系。结果表明:在加铺碳纤维的桥面板上撒布机械砂,界面层间粘结强度较高;温度、加载速率、浸水、冻融、轮碾等对层间粘结强度都有一定的影响,其中浸水对粘结性能影响显著,碳纤维加铺在桥面板上,必须处理好桥面的排水、防水问题;界面层间粘结强度与剪切强度成线性关系,常温时粘结强度约为无垂直压力剪切强度的1/5,约为0.7 MPa垂直压力剪切强度的1/7～1/9。
In order to evaluate the bonding performance between the CFRP deck and the deck pavement structure, the effects of three interface modes on the interlaminar bond strength and the three interface modes The relationship between interlaminar bond strength and shear strength was established based on the variation of bonding strength with different factors. The results show that mechanical sand is spread on the carbon fiber bridge deck, and the interfacial bonding strength is high. Temperature, loading rate, water immersion, freezing and thawing, wheel rolling have some influence on the bonding strength between layers Water immersion has a significant effect on the bonding performance. Carbon fiber is spread on the bridge deck and drainage and waterproofing of the bridge deck have to be dealt with. The bond strength between the interface layers is linear with the shear strength. The bond strength at room temperature is about zero Pressure shear strength of 1/5, about 0.7 MPa Vertical pressure shear strength of 1/7 ~ 1/9.