采用碳纤维布加固的高桩码头地震响应数值模拟分析

Numerical simulation analysis of seismic response of high pile wharf strengthened with carbon fiber sheet

高桩码头是我国沿海地区广泛应用的一种码头结构形式,同时也有易遭受地震破坏且难以修复的缺点。文章基于实际工程利用有限元软件ABAQUS建立高桩码头三维模型,对结构进行地震动力响应特性研究,分析碳纤维布加固前后高桩码头面板和桩基的位移、弯矩变化规律,研究碳纤维布的加固部位、加固厚度等不同加固参数对结构动力响应的影响规律。研究结果表明,碳纤维布节点加固抗震效果比较明显,在考虑经济和作用效果的前提下,存在一个最优加固厚度。

High pile wharf is a kind of wharf structure widely used in coastal areas of our country,but at the same time,it is easily damaged by and difficult to be repaired.In this paper,a three-dimensional model of high-pile wharf was established based on the actual engineering by using finite element software ABAQUS.The seismic dynamic response of the structure was studied by analying the displacement,bending moment of the slab and pile foundation of the high-pile wharf before and after reinforcement.The influence of reinforcement parameters such as the location and thickness of CFRP sheets on the dynamic response of the structure was studied.The experimental results show that the joints strengthened by CFRP is effective to improve the property of high pile wharf under the action of earthquake.In consideration of the economy and high-usage,the optimal reinforcement thickness there is determined.