Feasibility Simulation of Placing the Hanging Tank into Warehouse in the Concrete Construction of Inflated Membrane Structure in Cold Region
Yebatan Hydropower Station is located in the alpine region.Due to the low extreme temperature in winter,closed thermal insulation measures should be taken in the construction of concrete silo surface.However,it is difficult to solve the problem of heat preservation and unloading of hanging tank at the same time because the concrete needs to be placed in the warehouse without covering the warehouse surface.Therefore,it is particularly important to determine a suitable construction scheme and verify its feasibility.Through the analytic hierarchy process,the construction scheme of air-ribbed membrane greenhouse is determined as the thermal insulation scheme of concrete warehouse surface construction.The finite element analysis method was used to verify the feasibility of the scheme in terms of heat preservation and unloading,and to determine the working conditions with relatively low power consumption.The results show that it is recommended to use the construction plan of the inflated membrane structure as the concrete construction plan of the Yebatan Hydropower Station.A permanently supply opening on top of the inflated membrane structure can meet the temperature of the concrete construction area inside the inflated membrane structure above 5℃ under an ambient temperature of-20℃.10 hot air fans are evenly arranged in the inflated membrane structure.The air supply volume was set to 800m3/h,the temperature was set to 30℃,and it was opened 50 minutes in advance and continued to operate for 6 hours.The total power consumption was relatively small,about 818.4kW·h each time.
concreteinflated membrane structuresimulationanti-freezingtemperature control
万方数据
维普
