EFFECT OF CRACK ON SERVICE LIFE PREDICTION OF RC PIPE PILES EXPOSED TO MARINE ENVIRONMENTS

摘要：

　　In the present paper, the service life of RC pipe pile exposed to marine environments is predicted considering the crack effect on the chloride diffusion.The diffusion mechanism is mathematically described using the partial differential equation of the Ficks second law.The governing equation of chloride diffusion into RC pipe pile is solved analytically by using the Bessel functions.The equivalent diffusion coefficient through cracked RC pipe pile is derived by dividing the total chloride diffusion flux of cracked RC pipe pile into two flows, and the threshold chloride content is estimated from a wide review of previous experimental studies.Furthermore, an illustrative example of analytical method is demonstrated by predicting service life of cracked RC pipe pile exposed to marine environments.The effects of widths, inclined angles and number of cracks on chloride diffusion coefficient, chloride concentration profiles and service life of cracked RC pipe piles are also analyzed, respectively.

关键词： Reinforced Concrete pipe pile Cracks Chloride diffusion Service life prediction Marine environments

作者: Jingpei Li Wei Shao

作者单位: Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University, Shanghai 200092, China;Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China

会议类型: 国际会议

会议名称: The 3rd International Conference on Service Life Design for Infrastructure(2014第三届基础设施服役寿命设计国际会议)

会议地点: 珠海

会议语种:英文

页码: 471-482

在线出版日期: 2014-10-15（万方平台首次上网日期，不代表论文的发表时间）