The research and development of safety forewarning composite integral strong geocell

In the paper, we study the high strength geocell development technology route, analyze the rules of the tensile properties and creep properties of geocell, establish the relationship between elongation and stress and time, thus provide theoretical foundation for the development and engineering application of the new material. Through theoretical analysis, experimental research and numerical simulation, the characteristics, raw materials and craftsmanship of the geocell are studied. The research is given on its stress and deformation rules based on elongation test and creep test. The rationality of the experiment is verified through numerical simulation and the conclusions are as follows: (1) With the research on the geocell traditional craftsmanship, combined with new technologies as special ultrasonic welding technology, intelligent optical fiber technology and fixed locking plate technology, new-type safety forewarning high strength geocell can be developed. (2) Based on the geocell material characteristics, the elongation test and creep test are carried on and the tensile yield strength exceeds 250Mpa; the joint is welded by special crafts and the tensile strength ≥2000N/cm.(3) With FLAC3D numerical simulation, simulation study is performed on the mechanical properties of the new cell, analyze the relationship between stress and strain, time and displacement, and guide the safety design and management construction of the new-type geocell based on the actual situation of simulation.(4) The innovation points of the new-type geocell include the optimization technique of whole tensile yield strength, falling proof technique of lock parts, positioning and effective monitoring technique, which effectively solves the geological problems of special projects as ecological afforestation, sand fixation and high slope soft subgrade, ensures the quality of the project and has high economic benefits. © Qingbiao et al.