Lining construction method and lining trolley thereof

Abstract

The invention provides a lining construction method. The lining construction method includes equipment of a lining trolley and a concrete pumping mechanism, wherein the lining trolley comprises a formwork system, a portal frame system and a walking mechanism. The lining construction method comprise the following steps that the walking mechanism drives the portal frame system to convey formwork system single pieces to a construction site; the portal frame system splits the formwork system single pieces; the concrete pumping mechanism conveys concrete into pouring gates or working windows of theformwork system single pieces for lining construction; after lining construction of the construction site is completed, the walking mechanism drives the portal frame system to convey the formwork system single pieces to a next construction site. During application of the lining construction method, the combination of the portal frame system and the walking mechanism can serve as a standard component, which can be combined with a number of sets of formwork systems simultaneously to achieve simultaneous construction of multiple sets of formwork system single pieces, thereby greatly improving the construction efficiency. The invention also provides the lining trolley. The lining trolley is concise in structure and small in the number of parts; the formwork system single pieces serve as majorload bearing parts and accordingly are less prone to deformation and shifting during a pouring process.

Description

technical field [0001] The invention relates to the technical field of lining, in particular to a lining construction method and a lining trolley used therefor. Background technique [0002] At present, in the secondary lining construction of tunnel concrete, the concrete is directly transported to the designated position on the formwork of the trolley through the pumping pipeline by using the towed concrete delivery pump, or the concrete is delivered to the platform through the pumping pipeline. A designated position on the car is delivered to each required injection port through a diversion device to complete pouring. The existing defects are: the concrete conveying pipeline and the process are long, and it takes labor and time to build one by one; the concrete is prone to segregation during the flow process, which affects the pouring quality; the concrete is prone to leakage or seepage during the conveying process, causing on-site Environmental pollution and waste; after...

AI Technical Summary

Problems solved by technology

The existing defects are: the concrete conveying pipeline and the process are long, and it takes labor and time to build one by one; the concrete is prone to segregation during the flow process, which affects the pouring quality; the concrete is prone to leakage or seepage during the conveying process, causing on-site Environmental pollution and waste; after the pouring is completed, the residual concrete in the pipeline or pipeline is not easy to clean quickly, which consumes a lot of labor and time, and the labor intensity is high; when the pouring port is replaced during the pouring process, manual replacement or switching is required, which takes a long time and labor High strength, long interruption time, large concrete impact and disturbance; generally, one trailer pump can only be used for the second lining construction of one lining trolley, and the construction efficiency is low

There are many links of force transmission, which are prone to adverse effects and interference factors. It is easy to run out of molds and dislocations due to improper installation or support of any of the above links, structural deformation, etc., resulting in misalignment or deformation of the lining surface

[0006] 3. The skeleton in the trolley is used as the main force-bearing part, and the structural strength requirements are relatively high. The design weight is heavy, while the template is a huge shell structure with a round molding surface, but the weight is light, and the skeleton and the template are supported by a jack. Unstable rigid structure with pin connection

When the trolley is lining or moving, especially when there is a slope, due to the slope height difference between the front and rear and the instantaneous impact force when the trolley starts, there will be a tendency for relative movement between the two major components of the trolley door frame and formwork. The formwork will be distorted and deformed or tilted and misaligned with the portal frame, resulting in the displacement, deformation or collapse of the formwork during the later lining process

[0007] 4. The skeleton structure of the trolley is complex, with horizontal and vertical staggered connections, occupying a lot of space, and the tunnel construction environment is complex, requiring a variety of engineering vehicles to pass through the interior. It is difficult to ensure that the upper working platform compresses the lower space. Clearance requirements required for vehicle traffic, great potential safety hazards

[0008] 5. The internal space of the trolley has many rod structures with small ventilation cross-sections, resulting in difficult ventilation and poor air quality in the tunnel, which affects human health; the internal space is narrow and the passages such as ladder platforms are not humanized design, which makes it inconvenient for construction workers to pass and operate on site. There are also security risks

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