Continuous operation rolling over docking type tunnel lining formwork trolley

Abstract

The invention relates to a continuous operation rolling over docking type tunnel lining formwork trolley which can conduct tunnel secondary lining concrete pouring construction operation. The trolley comprises a platform frame, a walking device, a hydraulic driving device, a supporting lead screw set and formwork sets. The walking device is installed on the bottom portion of the platform frame. The walking device drives the platform frame to process along the tunnel piercing direction. The hydraulic driving device and the supporting lead screw set are installed on the platform frame. The number of the formwork sets is at least two, and the formwork sets can be unfolded and shrunk along the tunnel section direction. The outer outline size of the shrunk formwork sets is lower than the inner outline size of the unfolded formwork sets, and the shrunk formwork set can penetrate through the unfolded formwork set. The continuous operation rolling over docking type tunnel lining formwork trolley has the advantages that one set of walking support working platform is matched with a plurality of sets of independent formwork sets, concrete continuous pouring construction can be conducted, circulating streamlined operation of the formwork sets can be achieved, and therefore the phenomenon that concrete is extruded and damaged due to slab staggering and lap joint is avoided, quality of concrete construction is ensured, and construction efficiency is improved.

Description

technical field [0001] The invention belongs to tunnel construction equipment, in particular to a tunnel lining formwork trolley for continuous operation overturning butt joint. Background technique [0002] Most of the current high-speed railway tunnels and expressway tunnels adopt the standard design drawings of the Ministry of Railways or the Ministry of Communications, and adopt a unified tunnel structure and the same radius, which has strong versatility. "Construction Quality Acceptance Standards for High-Speed ​​Railway Tunnel Engineering" (TB10753-2010 / J1149-2011) clearly stipulates that "the secondary lining of tunnels with weak surrounding rock and poor geological The rock shall not be larger than 90m, and the surrounding rock of grade V and VI shall not be larger than 70m", so there is a contradiction between the rapid construction of the second lining and the equal strength of concrete, and the lack of concrete strength does not allow formwork removal, so it is im...

AI Technical Summary

Problems solved by technology

"Construction Quality Acceptance Standards for High-Speed ​​Railway Tunnel Engineering" (TB10753-2010 / J1149-2011) clearly stipulates that "the secondary lining of tunnels with weak surrounding rock and poor geological The rock shall not be larger than 90m, and the surrounding rocks of Grade V and VI shall not be larger than 70m", so there is a contradiction between the rapid construction of the second lining and the equal strength of concrete.

Secondary lining concrete is often seriously misplaced, and it is difficult to avoid the phenomenon of misplacement due to the inconsistent shrinkage of the old and new concrete

Due to the overlapping and extrusion of concrete, the internal structure of the overlapping part of the concrete is damaged, and there is a hidden danger of falling blocks, which endangers the safety of operation. If it falls on a high-speed train or car, it will cause particularly serious consequences.

[0003] At present, the existing scheme is to adopt a set of walking support operation platform to match the corresponding formwork system to carry out the construction work of concrete pouring for the secondary lining of the tunnel. The walking support system and the formwork system are inseparable from each other; the defects of this system are: 1. Equal strength It takes a long time to affect the next set of lining construction; 2. The concrete construction adopts lap joints, which are prone to misplacement and block dropping; 3. It is impossible to use multiple sets of formwork construction in the same tunnel at the same time, which cannot continue uninterrupted construction and cannot meet the requirements of rapid Construction requirements

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