Abstract：Research purposes: Tropical marine environment has the characteristics of high temperature, high humidity, high salt, strong typhoon, heavy rainfall, strong corrosion and strong lightning. Under this condition, the construction of high-speed railway needs to solve the key technical problems such as corrosion prevention of bridge concrete structure in high temperature and high humidity marine environment, reliability of electrification equipment in strong typhoon, high corrosion and strong lightning, effective reinforcement and protection of subgrade slope and traffic safety of high-speed railway under the condition of strong typhoon and heavy rainfall, which are systematically studied in this paper. Research conclusions: (1) The concrete performance index of bridge cast-in-place pile in severely corrosive environment and the durability improvement technology of bridge cast-in-place pile and pier and abutment structure are put forward. (2) The wind proof integral cantilever system of high-speed railway catenary in strong typhoon environment, lightning protection method of catenary structure in strong lightning environment and anti-corrosion measures of electrification equipment in strong corrosion environment are put forward. (3) This paper reveals the protection effects of different protection forms of subgrade slope and different natural forest forms against heavy rainfall and typhoon, and puts forward the selection principle of subgrade slope reinforcement and protection form under the condition of coastal heavy typhoon and heavy rainfall. (4) This paper can provide a reference for the construction of high-speed railway in tropical marine environment.
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2022, Vol. 39 
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