JP-2026075822-A - Concrete fixing joint member

Abstract

[Problem] To provide a concrete joint member for stopping concrete that allows easy confirmation of the concrete top surface position at joints when concrete is poured into multiple areas. [Solution] A concrete jointing member for preventing concrete from flowing in when concrete is poured between two adjacent areas, comprising: a frame formed by integrating an angle material having a substantially L-shaped cross-section and a flat plate material via connecting members provided at both longitudinal ends to form a gap of a predetermined width between the angle material and the flat plate material; and concrete jointing members that constitute a fence by being inserted in a plurality of rows into the gap, wherein the angle material has through holes formed at at least both ends in the longitudinal direction of the fence, and level adjustment bolts that can adjust the vertical height of the frame are inserted into the through holes. [Selection Diagram] Figure 2

Inventors

• 新田 泰裕

Assignees

• 岡部株式会社

Dates

Publication Date

20260511

Application Date

20241023

Claims (3)

1. A concrete joint member for preventing concrete from flowing in when concrete is placed between two adjacent areas, A frame is formed by integrating an angle material having a roughly L-shaped cross-section and a flat plate material via connecting members provided at both ends in the longitudinal direction so as to form a gap of a predetermined width between the angle material and the flat plate material, The fence is formed by inserting multiple concrete stoppers in a row into the gap, The angle material has through holes formed at at least both ends in the longitudinal direction of the fence body. A concrete fixing joint member, characterized in that a level adjustment bolt capable of adjusting the vertical height of the frame portion is inserted into the aforementioned insertion hole.
2. The concrete joint member for concrete fastening according to claim 1, further comprising one or more deflection-preventing materials inserted between adjacent concrete fastening materials in the gap to prevent deflection of the frame portion.
3. The deflection prevention material includes a hooking portion that hooks onto the angle material and an insertion portion that is inserted into the gap, The concrete joint member for fixing concrete according to claim 2, characterized in that the width of the insertion portion is the same as the design width of the gap portion.

Description

This invention relates to a concrete jointing member for securing concrete. Because there is a limit to the amount of slab concrete that can be poured in one go, it is common practice to pour concrete in multiple stages, using joints, when pouring large-area concrete slabs. For example, when pouring concrete in multiple areas, a fence-like concrete-stopping joint member is used between the area being poured and the area to be poured next to prevent unhardened concrete from flowing into the next area. For example, Patent Document 1 discloses a concrete joint spacer constructed by housing a core sandwiched between porous elastic material inside a bag made of synthetic resin. This concrete joint spacer is said to be easily installed and handled at various construction sites. Utility Model Registration No. 3212109 This is a schematic diagram illustrating a concrete joint construction site.This is a schematic enlarged view of the vicinity of the concrete joint member used for securing the concrete.This is a schematic plan view of a concrete joint member used for securing concrete.This is a schematic diagram illustrating the deflection prevention material.This is a schematic diagram illustrating the connection of concrete joint members used for securing concrete. The embodiments of the present invention will be described below with reference to the drawings. In this specification and the drawings, components having substantially the same functional configuration are denoted by the same reference numerals, thus omitting redundant explanations. <Concrete joint construction site> Figure 1 is a schematic diagram illustrating a concrete joint construction site using the concrete joint member for concrete retention according to this embodiment. As shown in Figure 1, the concrete joint member for concrete retention according to this embodiment is placed at the boundary (so-called joint) between one area S1, which is an area where concrete U1 has already been poured, and the other area S2, which is adjacent to area S1 and where concrete will be poured in the future, in the ground G which is the construction site. A structural element 10, which will be embedded within the concrete after it is poured, is placed in the ground G. The configuration of this structural element 10 is arbitrary; for example, it may include multiple main reinforcing bars 11 and multiple distribution reinforcing bars 13 perpendicular to them. Alternatively, as shown in Figure 1, the structural element 10 may have flow-preventing reinforcing bars 15 fixed by welding. The concrete-stopping joint member 1 is constructed by integrating an angle member 20 having a substantially L-shaped cross-section and a flat plate member 30 so as to form a gap 40 of a predetermined width L1 between the angle member 20 and the flat plate member 30. These angle member 20 and flat plate member 30 are connected by a connecting member 90 (described later), and integrated so that their upper end positions coincide to form a frame portion 60. Here, it is preferable that the flat plate member 30 of the frame portion 60 faces region S1 and the angle member 20 faces region S2. A concrete retaining material 50 is inserted into the gap 40 between the angle material 20 and the flat plate material 30. The concrete retaining material 50 is inserted so that its upper end protrudes above the frame 60 and its lower end contacts the ground G. The thickness of the concrete retaining material 50 (thickness in the X direction in the figure) is designed to match the design width L1 of the gap 40. Although not shown in Figure 1, multiple concrete retaining materials 50 are inserted along the longitudinal direction of the frame 60, and these multiple concrete retaining materials 50 constitute a fence extending along the longitudinal direction of the frame 60. The structure and configuration of the concrete stopper 50 are arbitrary; for example, as shown in Patent Document 1, a rectangular prism-shaped material may be used, in which a core is embedded in a porous elastic material inside a bag made of synthetic resin. An insertion hole (described later, insertion hole 93) formed on the bottom surface of the angle member 20 is fitted with a level-adjusting bolt 70 that supports the frame 60 including the angle member 20. The frame 60 is configured to be fixed at any height in the vertical direction (Z direction in the figure) relative to the level-adjusting bolt 70. Furthermore, a clamp 75 is positioned in area S2. This clamp 75 is attached to a structural member and connected to the level adjustment bolt 70 via a separator, in order to prevent the concrete joint member 1, including the level adjustment bolt 70, from tilting due to the lateral pressure of the concrete. <Structure of concrete retaining joint members> Figure 2 is a schematic enlarged view including the vicinity of the concrete joint member 1 for concrete retention according to this embodiment. Figure 3 is a schematic plan view of