高速铁路双块式轨枕及道床板失效更换

随着运行里程及时间的增加,在不同运营条件下会导致高速线道床板及轨枕出现不同程度的损伤。通过对山西省某高速线实际运营条件、行车条件、高速线路线性进行收集,以车辆运行品质和轨道动态性能等指标作为个性化目标,在行车稳定性与安全性、优化变量的合理变化范围等约束条件下进行综合个性化设计,提出双块式轨枕及道床板个性化设计廊形,指导现场道床板及双块式轨枕维修,保证列车运行的舒适和安全,延长道床板混凝土使用寿命。

Hoffa＇s fracture with ipsilateral fibular fracture in a 16-year-old girl： An approach to a rare injury

Hoffa＇s fracture is an uncommon fracture of the femoral condyle with coronal orientation of the fracture line. The mechanism of injury in pediatric Hoffa＇s fracture is road traffic accident, sports injury, and trivial injury. Clinical examination and proper imaging is important for diagnosis of pediatric Hoffa＇s fracture because of high chances of missing these injuries which can lead to nonunion and malunion at the fracture site. Open reduction and anatomical reduction of intraarticular fragment is the gold standard treatment of these fractures. We present a rare case of Hoffa＇s fracture in a 16-year-old girl with asso- ciated ipsilateral fibular fracture.