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Tunnel primary lining formwork trolley and its construction method

A formwork trolley and formwork technology, which is applied to tunnel lining, tunnel, shaft lining, etc., can solve the problem that the formwork trolley cannot be used as the primary lining of the tunnel, and achieve the effects of easy replacement, improved construction progress, and high safety.

Inactive Publication Date: 2018-04-10
GANSU ROAD & BRIDGE CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These formwork trolleys are used for the concrete pouring of the secondary lining of the tunnel. Since the excavation cannot be affected during the concrete maintenance period, if the existing formwork trolleys are used for the tunnel primary lining, the excavation cannot be carried out during the concrete maintenance period. Therefore, the existing formwork trolley cannot be used for the tunnel lining

Method used

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  • Tunnel primary lining formwork trolley and its construction method
  • Tunnel primary lining formwork trolley and its construction method
  • Tunnel primary lining formwork trolley and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A formwork trolley for the initial lining of a tunnel, including a formwork mechanism and a door frame assembly. When concrete is pumped, the formwork mechanism forms a steel arch at the lining position, and the steel arch is supported on the door frame assembly; When the injected concrete is in the curing period, the pumped concrete is supported on the steel arch, and the steel arch is separated from the door frame assembly.

[0045] The formwork mechanism includes a base formwork 6 and an arch formwork. The base formwork 6 is pre-set at the position to be lined, and the arch formwork is transported by the portal frame assembly to cooperate with the foundation formwork 6 to form a rigid arch.

[0046]The arch formwork includes a top arch formwork 1 and a side arch formwork 4, the two sides of the top arch formwork 1 are respectively hinged with the side arch formwork 4, and the side arch formwork 4 is connected with the base formwork 6 by bolts.

[0047] The gantry ass...

Embodiment 2

[0063] The invention is designed for the initial lining of the upper tunnel of the tunnel, and can be used with multiple sets of templates. like figure 1 Shown, the present invention is in concrete casting state. The length of a single set of formwork on the trolley is 3 meters, and it can be equipped with multiple sets of formwork for construction. The portal frame of the trolley is moved and put in place, and the formwork is driven away 3 hours after the concrete pouring is completed, and the self-supporting formwork alone bears the concrete load. When the formwork is in place, place the base formwork 6 first and fix it, then place the side arch formwork 4 and the top arch formwork 1, and lock it with the formwork locking bolt 3 after adjusting it in place.

[0064] The present invention is designed with a jacking mechanism and a translation mechanism, which can adjust the trolley up and down and left and right, and can also correct the direction of the trolley when the tr...

Embodiment 3

[0068] The jacking oil cylinder seat 14 of the present invention is installed in the longitudinal beam sliding seat, and one end of the jacking oil cylinder 15 is connected with the jacking oil cylinder seat 14, and the other end is connected with the longitudinal beam sliding seat, and the telescoping of the oil cylinder drives the mast up and down.

[0069] The jacking cylinder base 14 is slidably installed on the trolley base 12 at the same time, one end of the translation cylinder 13 is hinged with the jacking cylinder base 14 , and the other end is hinged with the trolley base 12 . The translation cylinder 13 telescopically drives the door frame to slide laterally relative to the trolley base 12 . Tire and driving mechanism are installed on the door frame longitudinal beam 5.

[0070] The two sides of the top arch formwork 1 are respectively hinged with the side arch formwork 4, and can also be fixedly connected by bolts or connected by formwork pins 2 at the same time. ...

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Abstract

The invention discloses a tunnel primary lining formwork trolley and a construction method thereof. The tunnel primary lining formwork trolley comprises a formwork mechanism and a portal assembly. When concrete is pumped, a rigid arch frame is formed at the lining position through the formwork mechanism, and the rigid arch frame is supported on the portal assembly. When the pumped concrete is in the maintaining period, the pumped concrete is supported on the rigid arch frame, and the rigid arch frame is separated from the portal assembly. By means of the tunnel primary lining formwork trolley and the construction method thereof, the excavating operation can be carried out in the concrete maintaining period.

Description

technical field [0001] The invention relates to a tunnel lining formwork trolley, in particular to a tunnel initial lining formwork trolley and a construction method thereof, which are used for the initial lining of tunnel upper tunnels. Background technique [0002] During the construction of the loess tunnel, due to the poor self-supporting force of the surrounding rock, it is not possible to excavate in a long length. Generally, the initial support of the tunnel is required immediately after each excavation does not exceed 3 linear meters. There are generally two types of initial support, one is spray anchor construction for hanging steel mesh, and the other is for molded concrete construction. [0003] In the construction of molded concrete, the core soil needs to be reserved, and the construction space is small. At present, the steel arches are erected manually, and the concrete is poured after the formwork is combined. This kind of construction method has the disadva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/105
Inventor 陈建民岳永和唐桂芳崔建文张訸崔鹏宋卫忠金明亮晏社刚罗宏涛田过勤刘斌郝东张海强李永忠张常安于澍江余波谢永明
Owner GANSU ROAD & BRIDGE CONSTR GROUP