JP-7856273-B1 - Concrete curing trolley and method for installing the concrete curing trolley

Abstract

[Problem] To provide a concrete curing trolley and a method for installing the concrete curing trolley that can be applied to the enlarged section of a tunnel. [Solution] The concrete curing trolley 1 of the present invention comprises a standard section frame 10 having a substantially semi-cylindrical outer shape corresponding to a standard section, and an expanded section frame 20 that is partially extended radially from the standard section frame 10 to correspond to an enlarged section, wherein the expanded section frame 20 comprises a plurality of curved support members 21, a plurality of spacing members 22, and a plurality of expansion connecting members 23, and the outer shape of the expanded section frame 20 is formed by the plurality of curved support members 21. The installation method of the concrete curing trolley of the present invention comprises a moving step S1 of moving the standard section frame 10 into the enlarged section through the standard section, and an assembly step S2 of assembling the expanded section frame 20 by connecting the plurality of curved support members 21, a plurality of spacing members 22, and a plurality of expansion connecting members 23 to the standard section frame 10 within the enlarged section. [Selection Diagram] Figure 1

Inventors

• 高林 敏正
• 石川　雅人

Assignees

• 株式会社東宏
• 八州電工株式会社

Dates

Publication Date

20260511

Application Date

20251222

Claims (5)

1. A concrete curing trolley for holding curing balloons on the inner surface of tunnel lining concrete, for use in an enlarged section of the tunnel where the cross-sectional shape is partially expanded radially from the standard cross-sectional section, A standard cross-section frame having a roughly semi-cylindrical outer shape corresponding to the standard cross-section, The system includes an extended section frame which is partially extended radially from the standard section frame to correspond to the enlarged section, The extended section frame comprises a plurality of curved support members made of fiber-reinforced plastic pipes , at least one end of which is connected to the standard section frame and which curves in the circumferential direction of the standard section frame and extends outward; a plurality of elongated spacing members that connect the standard section frame and the curved support members in the radial direction of the standard section frame; and a plurality of elongated extension connecting members that connect the plurality of curved support members or the plurality of spacing members in the front-rear direction of the standard section frame. The curved support member is supported on the standard cross section frame by the plurality of spacing members, and the outer shape of the extended cross section frame is formed by the plurality of curved support members. Concrete curing cart.
2. The spacing member is characterized by having a sheath tube at its tip capable of holding the curved support member. The concrete curing trolley according to claim 1.
3. The extended section frame is characterized in that, on the side of the standard section frame, it comprises a plurality of elongated reinforcing members that connect the standard section frame and the spacing member downward from the standard section frame. The concrete curing trolley according to claim 1.
4. The reinforcing material is characterized in that it is a turnbuckle. The concrete curing trolley according to claim 3 .
5. A method for installing a concrete curing trolley, wherein the concrete curing trolley described in any one of claims 1 to 4 is installed within the enlarged cross-section, A movement step of moving the standard section frame through the standard section into the enlarged section, The invention is characterized by comprising an assembly step of assembling the expanded section frame by connecting the plurality of curved support members, the plurality of spacing members, and the plurality of expansion connecting members to the standard section frame within the expanded section portion. How to set up a concrete curing trolley.

Description

This invention relates to a concrete curing trolley used for curing lining concrete in tunnel construction and a method for installing the same, and more particularly to a concrete curing trolley and a method for installing the same that are applicable to enlarged sections of a tunnel where the cross-section is partially expanded radially from the standard cross-section. In mountain tunnel construction, the balloon curing method is used, in which the surface of the lining concrete is covered with curing balloons after the formwork is removed. In the balloon curing method, curing balloons are inflated on the outer circumference of a concrete curing trolley and pressed against the inner surface of the lining concrete to hold it in place. This reduces the evaporation of moisture from the surface of the lining concrete, prevents the occurrence of cracks due to drying shrinkage, and improves construction quality (Patent Document 1) (Figure 4). The balloon curing trolley has a roughly semi-cylindrical outer shape corresponding to the cross-sectional shape of the tunnel, and moves toward the tunnel face using wheels provided at the bottom of the base, sequentially carrying out the curing work of the lining concrete after formwork removal. In the design of road tunnels, it is necessary to provide emergency parking areas (emergency roadside areas) at intervals of several hundred meters along the tunnel axis for disabled vehicles and emergency vehicles to stop. In the sections of the emergency parking areas, the cross-sectional shape of the tunnel changes from a standard cross-section to an enlarged cross-section that is partially expanded radially. In conventional technology, a concrete curing trolley for the enlarged cross-section was prepared in addition to the concrete curing trolley for the standard cross-section, and this enlarged cross-section concrete curing trolley was placed inside the enlarged cross-section to cure the lining concrete. Japanese Patent Publication No. 2005-299323 Diagram explaining a concrete curing trolley.Explanation diagram of a standard section frame.Diagram illustrating the extended section frame.Diagram illustrating the conventional technology The concrete curing trolley and the installation method of the concrete curing trolley of the present invention will be described in detail below with reference to the drawings. In this invention, unless otherwise specified, terms such as "height," "width," "front/back," "circumferential direction," "radial direction," and "axial direction" refer to the directions based on the approximately semi-cylindrical outer shape of the concrete curing trolley, with the axial direction of the semi-cylindrical shape being the front/back direction.