Papers by Author: Rong Shi

Abstract: Engineering must maintain and repair the whole track bed daily and timely. Considering the different geographical conditions of the construction, soil conditions and the different construction methods and other factors, engineering methods adopted are not the same reinforcement. Mainly three categories: the repair of minor cracks in the surface of the coating law, pressure grouting which has a good condition of strength and durability, grooving repair methods. This paper focuses on various types of reinforcement construction methods for comparison.

Abstract: Using dynamic elastic-plastic finite element method, on the base of works together and interaction between loess and flexible retaining wall, 3-D nonlinear FEM (ADINA) is used to analyze and discussed the dynamic response of slope protected by soil nailing retaining wall under the EL-Centro and man-made Lanzhou accelerogram. A model that is capable of simulating the nonlinear static and dynamic elastic-plastic behavior of soil is used to model the soil, and a bilinear elastic-plastic model that has hardening behavior is used to model the soil nailing. Friction-element is employed to describe the soil-structure interaction behavior.The results show that the method is safe and credible. The results of the FEM dynamic analysis can be a useful reference for engineers of the design and construction of the soil nailed wall.

Abstract: Settlement monitoring in the process of roadbed construction is one of the key technologies in the quality of passenger railway roadbed construction. By the specific circumstances of the roadbed project of passenger railway Tianjin to Qinhuangdao, outlines the meaning and content of the purpose of roadbed settlement monitoring, and describes the characteristics of a variety of settlement monitoring, function and layout of facilities in implementation, the requirements of technology, etc. Investigate and analyze the settlement monitoring information management based on construction control.

Abstract: In this paper, rail fastening of shanghai metro line1,2,3,4, the species distribution from a variety of fasteners and fastening performance comparisons of the two main aspects of the investigation. To mastered the main content of the use of Shanghai Metro rail fastening. Analysis of the popular types fastener of Shanghai subway such as type WJ-2 fastener, type DTIII fastener, type DTIII-2 fastener, type II elastic fastener. Track fastener in the actual use of shock absorber characteristics of the process. Come to Shanghai Metro rail fastening design and selection of line with actual needs, Shanghai Metro rail fastening series featured a wide variety and distinctive. Also pointed out that lack of adjustable fasteners, fastener corrosion, fastener and the lack of vibration reduction and performance degradation caused by a wide range of management and maintenance of complex and emphasize on the use of investigation and analysis of search problems, tracking the course of the development, research the causes and improve the conservation measures to maintain rail fastening methods Keti the safe operation of the subway has a crucial role in.