SAFETY AND SERVICEABILITY EVALUATION OF INFRASTRUCTURES SUBJECTED TO FROSTQUAKES: TREMORS COMMENCED AT NORTHERN AMERICA ON JANUARY 3, 2014

摘要：

　　Freezing unrest, indicative of water frost and pressure increases within soil and rocks, often precedes earth tremors.This intriguing form of tremor is called frostquakes (or cryoseisms).The frostquakes share similar felt effects of earthquakes.On January 3, 2014,Loud booms commenced across Toronto at Northern America, from Rexdale, Belleville,Schomberg, Richmond Hill, Newmarket, to Kleinburg, Stouffville, Ajax, Oshawa, Brampton and Orangeville.Residents across Toronto are reported being awoken by extremely loud booms, like presage of large destructive earthquakes.This causes worries and even frights of frostquakes.Thus, to evaluate the substantial damage that frostquakes may bring to civil infrastructures, this paper introduces a prediction model to study the implications of this tremor mechanism and the damage it may bring.A typical civil structure, a common 10-story RC building structure, is adopted as the case study.It can be predicted that the highest intensity of frostquakes will not exceed VI Modified Mercalli (MM) intensity.It is concluded that, though cracks within 0.3 mm in width may occur in some RC structures during frostquakes, no permanent damage which may decreases the safety or serviceability performance of structures would be brought to typical civil infrastructures.

关键词： frostquakes RC structures crack width serviceability evaluation safety evaluation

作者: Meng Zhou Jiansheng Fan Jianguo Nie

作者单位: Key Lab.of Civil Engineering Safety and Durability of China Education Ministry, Dept.of Civil Engineering, Tsinghua University, Beijing, China 100084

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: 293-299

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）