【作者】 杨绿峰； 周明； 陈正； 洪斌； 蒋琼明； 胡春燕；

【Author】 YANG LuFeng1,2,ZHOU Ming1,CHEN Zheng1,HONG Bin1,JIIANG QiongMing1,HU ChunYan1 (1.Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education,School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China 2.Department of Housing and Urban-Rural Development,Guangxi Zhuang Autonomous Region,Nanning,530013)

【机构】 广西大学工程防灾与结构安全教育部重点实验室； 广西壮族自治区住房与城乡建设厅；

【摘要】 实际海洋混凝土结构的部分构件截面为圆形,如跨海大桥的桥墩等,有必要开展圆形截面的氯离子扩散和分布规律研究。根据二维氯离子扩散的控制方程建立基于极坐标的氯离子扩散方程,推导了圆形截面的解析解,并通过Stokes方法求零阶贝塞尔函数的根,解决截面半径较大时使用传统解析方法求解出现的问题;此外,还利用贝塞尔函数的简化计算方法解决了贝塞尔函数的收敛慢、计算精度和效率较低的问题。更多还原

【Abstract】 The actual marine concrete structure member with circular section,such as bridge piers,etc.,and it is necessary to research the chloride diffusion and distribution in concrete with circular section.The chloride diffusion equation with circular section based on two-dimensional chloride diffusion control equations is developed by coordinate transformation,and the analytical solution of that is proposed in this paper.The calculation results of chloride concentration in concrete with circular section calculated by solving the roots of zero-order Bessel function by Stokes method is more precise than those by traditional analytical method.In addition,the slow convergence,lower computational accuracy and efficiency of Bessel functions can be solved by a simplified method presented in this paper.更多还原