Ultra-high performance concrete prefabricated underground evacuation platform

The invention relates to the technical field of underground evacuation platforms, in particular to an ultra-high-performance concrete prefabricated underground evacuation platform which comprises an evacuation platform plate and an evacuation platform support, the evacuation platform support is fixedly installed and connected with an external channel, and the evacuation platform plate and the evacuation platform support are both made of ultra-high-performance concrete materials. The evacuation platform support is of an inclined triangular support structure and comprises a cross beam, inclined struts and a support. The evacuation platform plate is installed on the cross beam, the support is fixedly installed in the external channel, and the inclined strut is connected with the cross beam and the support. According to the rail transit evacuation platform, the ultra-high-performance concrete is applied to the rail transit evacuation platform, and the technical scheme that the evacuation platform plate, the evacu