Active temperature control prestressed concrete ventilating duct device capable of relieving thaw collapse of railway bed in permafrost region

Abstract

The utility model relates to an active temperature control prestressed concrete ventilating duct device which can be used for relieving thaw collapse of a railroad bed in a permafrost region. Comprising a forward prestressed concrete ventilation pipe (1) and a backward prestressed concrete ventilation pipe (2). Wherein pipe orifice blades (3), impurity filter screens (4), control systems (5), air doors (6), ground temperature monitoring devices (7) and air temperature monitoring devices (8) are arranged in the forward prestressed concrete ventilation pipe (1) and the backward prestressed concrete ventilation pipe (2), the manufacturing cost of the ventilation pipe is reduced through the prestressed concrete ventilation pipe, and the durability of the ventilation pipe is improved; the ground temperature monitoring device (7) and the air temperature monitoring device (8) are connected with the control system (5) to actively recognize the temperature difference and control the air door (6) to achieve active cooling of the roadbed, the effect of cooling the roadbed is effectively achieved by absorbing external cold air, and the stability of the roadbed is further improved.

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