Rescue evacuation facility on fabricated railway bridge and construction method

Abstract

The invention provides a rescue evacuation facility on fabricated railway bridge and a construction method. The rescue evacuation facility comprises a foundation body, stand columns and stairs, connecting columns are arranged at the bottoms of the stand columns, preformed holes correspond to connecting keys in the foundation body in a one-to-one mode, the stairs are arranged at the tops of the stand columns, and preformed holes are formed in the two sides of the bottoms of the stairs; shear key top free ends are arrange in a one-to-one corresponding manner with the bottoms of the stairs; Splicing seams are formed between the upper surface of the foundation body and the bottoms of the stand columns, the upper surface of the foundation body and the bottoms of the stand columns are spliced and connected with the connecting keys through the splicing seams, splicing seams are formed between the tops of the stand columns and the bottoms of the stairs, and the tops of the stand columns and the bottoms of the stairs are spliced and connected with the shear keys through the splicing seams; and grouting materials are arranged in the preformed holes of the connecting columns provided with theconnecting keys. The stand columns in an evacuation passage are high in height and small in size, the stand columns are prefabricated in factories and hoisted and assembled on site, supports do not need to be erected, and safety is high; stairs in the evacuation channel are of a continuous structure, prefabricated stairs are adopted, hole-by-hole hoisting and erection construction are conducted,and the site construction time is obviously shortened.

Description

Technical field [0001] The present invention belongs to the field of railway bridges, in particular, involving a rescue evacuation facility and construction method on assembled railway bridges. Background technique [0002] The rescue evacuation facility on the railway bridge is an important part of the railway disaster prevention and rescue security system. When there is an earthquake, the fire is used to quickly evacuate the passengers when there is an emergency situation in the bridge, and partly part of the maintenance and repair function, everyday In railway maintenance, the staff can be set at about 3km along the line direction by evacuation facilities. [0003] The rescue evacuation facility on the railway bridge is composed of foundation, column, beam and stairs. Currently, there is currently in-place construction, there is a problem of difficulty in casting bracket templates, poor concrete pouring, long construction period; for some approach to business line or level roa...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a rescue and evacuation facility and construction method on a prefabricated railway bridge, which is especially suitable for solving the disadvantages of large-scale cast-in-place support, poor stability, difficulty in supporting formwork on site ladder slabs, and difficulty in controlling the quality of concrete pouring and vibration

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