Analysis of Displacement Monitoring Measurement in Tunnel Construction

Based on measured data of Wuxinzhai tunnel in expressway of Shanyin to Pinglu, mathematical methods were used to make regressing analysis of measured date on crown settlement and periphery convergence. According to the time-effect of soil mass excavation in New Austrian Tunneling Method, the relations between rock deformation and time during the tunnel construction was analyzed. The results of analysis could provide an theoretical basis for modifying design and construction , and also could offer an example for similar projects in this area.

Evaluation and Performance Prediction for Asphalt Pavement Preventive Conservation Measures

Based on the monitoring data of pavement performances and traffic volume from the China key projects, the expressways from Shenyang to Shanhaiguan and from Panjin to Haicheng, the effects of asphalt pavement preventive conservation measures utilized in the two expressways and the remaining equivalent standard loads are evaluated. Three models are adopted to predict the pavement performances for the two expressways in six years by the regressing analysis and the reasonable performance prediction models are accomplished through modifying the initial models by the actual monitoring data.