Prefabricated evacuation platform for shield interval tunnel

Abstract

The invention discloses a prefabricated evacuation platform for a shield interval tunnel. The prefabricated evacuation platform comprises prefabricated evacuation platform brackets connected with shield segments and prefabricated platform plates, wherein the prefabricated evacuation platform brackets comprise supporting oblique beams and bottom beams; the supporting oblique beams are connected with cross beams; certain sides of the cross beams are connected with reserved bumps; the supporting oblique beams, the bottom beams, the cross beams and the reserved bumps are of a prefabricated integrated structure; the supporting oblique beams, the cross beams and the bottom beams define a space; the cross beams are used for supporting the prefabricated platform plates; the prefabricated platform plates are erected on the cross beams of the two prefabricated evacuation platform brackets; the corners of the prefabricated platform plates are provided with notches which are matched with the reserved bumps; the bottom beams are provided with reserved holes; the bottom beams are fixedly connected with the shield segments. The prefabricated evacuation platform and the segments are reliably connected, the stress is rational, the cambered bottom beams can be used for excellently transferring a load, and the positioning accuracy of mounting is improved; the platform plates are fixed by the reserved bumps on the end parts of the cross beams, so other mechanical connection of the platform plates and the cross beams is reduced, and the mounting and the construction are more convenient and faster.

Description

technical field [0001] The invention relates to a prefabricated evacuation platform of a shield section tunnel. Background technique [0002] With the continuous expansion of the city scale, it is increasingly eager for large-capacity, low-pollution, and high-efficiency urban rail transit. At present, more than 30 cities in my country are actively promoting the construction process of urban rail transit. [0003] The shield tunneling method has the characteristics of fast construction speed, low vibration, low noise, safety and reliability, and little impact on the surrounding environment. It has become one of the most widely used construction technologies in the construction of urban rail transit underground sections. The cross-sectional size of the hollow chamber is limited. While meeting the limit requirements, it is very important to arrange a large number of equipment pipelines reasonably and connect them reliably with the segments. The evacuation platform plays an imp...

AI Technical Summary

Problems solved by technology

The evacuation platform plays an important role in the daily operation and maintenance of the underground tunnel and the safe and rapid evacuation of passengers under special circumstances. It is an important facility that must be installed in the tunnel. Composite material deck, this kind of evacuation platform has disadvantages such as complex construction, low installation accuracy, easy corrosion and poor durability in complex underground environments, and easy loosening of connections under vibration loads.

Images