JP3004201U - Joint fitting for concrete segment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a concrete segment joint fitting that can be firmly attached to a main beam without a complicated structure and can reliably hold the joined state of concrete segments. According to the joint fitting 1 for concrete segment of the present invention, the fitting projection 6 of the reinforcing beam member 7 which is a flat steel arranged in the concrete segment is provided with the fitting recess of both side plates 5 of the fitting 1. 4, the flat beam reinforcing beam member 7 and the side plates 5 of the joint fitting 1 are simply attached to each other. Further, the reinforcing beam member 7 can be firmly fixed to the both side plates 5 by fitting the fitting convex portion 6 into the fitting concave portion 4 and welding the same, so that the concrete segment can be joined even when used for many years. Make sure that the state can be maintained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a joint fitting that is used by being provided on a joint end surface portion of a concrete segment for joining concrete segments to each other.

[0002]

[Prior art]

 Conventionally, this type of joint fitting has been provided on the joint end face side of a concrete segment and has a bearing plate with through holes for joining bolts drilled, and the widthwise ends of the bearing plate inside the concrete segment. It is generally known that it is formed in a substantially U-shaped cross-section from both side plates extending to.

[0003]

[Problems to be solved by this device]

 However, recently, in order to ensure that the stress applied to the joint bolts flows from the pressure bearing plate to the reinforcing member and from this reinforcing member to the concrete segment body, the joint fitting and the main beam of flat steel or the like in the concrete segment are surely flown. In some cases, it may be directly connected to the material also as the anchor member of the fitting. In such a case, in the above-mentioned conventional joint fitting, the structure of the attachment portion between the joint fitting and the main beam member becomes a problem.

That is, in the conventional fitting, the main beam may sometimes come out of the fitting because the fitting may be deformed when stress is applied to the fitting and the fitting may not come out. The installation state of may not be reliable. This means that after the concrete segments have been assembled, the joint condition deteriorates and the concrete segments are not sufficiently joined.

However, if an attempt is made to make the attachment state of the joint fitting and the main beam material strong, the structure of the attachment part becomes complicated, and the installation of the joint fitting at the time of manufacturing the concrete segment is troublesome. Become.

The present invention was created in view of the above-mentioned circumstances, and its purpose is to firmly attach the main beam member without a complicated structure, and to reliably maintain the connection state between concrete segments. The purpose is to provide a fitting for a concrete segment that can be made.

[0007]

[Means for Solving the Problems]

 A concrete segment joint fitting according to the present invention is provided on a joint end face portion of a concrete segment and has a support plate having a through hole for a joint bolt, and the widthwise both ends of the support plate inside the concrete segment. And the pressure bearing plates are integrated into a substantially U-shaped cross section, and both side plates have fitting recesses at the same position on the opposite surfaces, and the ends are widened to fit into the fitting recesses of both side plates. It is composed of a flat steel reinforcing beam member having a fitting convex portion formed by being arranged inside a concrete segment. Further, the reinforcing beam member is fixed to both side plates by welding while the fitting convex portion of the end portion is fitted into the fitting concave portions of the both side plates.

According to the joint fitting for a concrete segment of the present invention as described above, the flat bar is reinforced by fitting the fitting projection of the reinforcing beam member into the fitting recess of both side plates. The structure of the attachment part between the beam and both side plates of the joint fitting is simplified.

[0009] Furthermore, the reinforcing beam member can be fixed to both side plates firmly by fitting the fitting convex portion to the fitting concave portion and welding it, and even when it is used for many years, the joining of the concrete segment can be performed. Make sure that the state can be maintained.

[0010]

【Example】

 The concrete segment joint fitting of the present invention will be described below with reference to the illustrated embodiment.

The joint fitting 1 (see FIGS. 1 and 2) embedded in the joint end face portion and joining the concrete segments to each other is provided on the joint end face portion of the concrete segment (not shown) and is used for joining bolts. A pressure bearing plate 3 having a through hole 2 (see (b) of FIG. 1 and FIG. 2), and a pressure bearing plate 3 extending from both ends in the width direction of the pressure bearing plate 3 into the concrete segment and having a substantially sectional view Both side plates 5 which are integrated in a U-shape and have fitting recesses 4 (see FIG. 1 (b)) at the same position on opposite surfaces, and are fitted into the fitting recesses 4 of these side plates 5. In order to do so, it has a fitting projection 6 (see (a) and (b) in Fig. 1) formed by widening the end, and is a flat steel reinforcing beam member disposed inside a concrete segment. It consists of 7.

The reinforcing beam member 7 is fixed to the side plates 5 by welding while fitting the fitting protrusions 6 at the ends into the fitting recesses 4 of the side plates 5. .

The fitting recess 4 of the side plates 5 in this embodiment is located at a substantially central position in the vertical direction of the side plates 5 and at a predetermined distance at a central position in the extending direction of the side plates 5. Has been formed.

Further, the reinforcing beam member 7 in this embodiment is formed such that the distance in the width direction thereof is the same as the distance between the both side plates 5 in the joint fitting 1, and the longitudinal end portion, that is, At the end of the concrete segment on the joint end face side, a fitting projection 6 is formed by widening the end.

When the joint metal fitting 1 having such a structure is provided in the concrete segment and the concrete segments are joined, the structure of the attachment portion between the flat steel reinforcing beam member 7 and the both side plates 5 of the joint metal fitting 1 is obtained. In addition, the reinforcement beam 7 can be fixed to both side plates 5 firmly by the fitting welding of the fitting convex portion 6 and the fitting concave portion 4, and even when it is used for many years, the joining state of the concrete segment Can be securely held.

The reinforcing beam member 7 is installed in only one flat steel sheet in the above-described embodiment, but may be provided in a plurality of flat steel sheets depending on the required strength.

[0017]

[Effect of device]

 According to the joint fitting for a concrete segment of the present invention, the flat bar arranged in the concrete segment is configured so that the fitting projection of the reinforcing beam member is fitted into the fitting recess of both side plates of the fitting. It is possible to simplify the structure of the attachment portion between the reinforcing beam member of and the both side plates of the joint fitting.

Further, the reinforcing beam member can be firmly fixed to both side plates of the joint fitting by fitting the fitting convex portion to the fitting concave portion and welding. Therefore, the joint condition of the concrete segment can be surely maintained even when it is used for many years.

[Brief description of drawings]

FIG. 1 (a) is a plan view showing a concrete segment joint fitting of the present invention, (b) is a view taken along the line AA of (a), and (c) is a line BB of (a). FIG.

FIG. 2 is a schematic perspective view showing a concrete segment joint fitting of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Joint metal fittings, 2 ... Through hole, 3 ... Pressure support plate, 4 ... Fitting concave part, 5 ... Both side plates, 6 ... Fitting convex part, 7 ... Reinforcing beam material.

Claims (1)

[Scope of utility model registration request] 1. A pressure fitting plate embedded in a joint end surface portion for joining concrete segments together, the bearing plate being provided at the joint end surface portion of the concrete segment and having a through hole for a joint bolt formed therein. Both side plates that extend into the concrete segment from both ends in the width direction of the pressure support plate and are integrated with the pressure support plate in a substantially U-shaped cross section, and have recesses for fitting at the same positions on the opposing surfaces, and It has a fitting convex part formed by widening the end part to be fitted into the fitting concave part, and comprises a flat steel reinforcing beam member arranged inside the concrete segment, and the reinforcing beam member is A joint fitting for a concrete segment, characterized in that it is fixed to both side plates by welding in a state where the fitting convex part of the end part is fitted into the fitting concave parts of both side plates.