JPH0237447B2 - KEEBURUNOTEICHAKUHOHO - Google Patents

Description

[Detailed Description of the Invention] When installing structural cables, which are the main components of suspension bridges, cable-stayed bridges, etc., the cables are subjected to repeated loads due to wind, etc., and fluctuating stresses are generated. , it is necessary to anchor the cable end to have sufficient fatigue resistance.

The present invention was proposed for the purpose of satisfying these demands and providing a cable fixing method with excellent fixing force and fatigue resistance. In a cable anchor formed by integrally molding a cable anchor made of resin-impregnated concrete or resin-impregnated mortar, the cable is inserted into the cable insertion hole, and the cable end anchoring portion is inserted into the cable anchor. The present invention relates to a method for fixing a cable anchor, which comprises fixing the cable anchor to an end face, and then injecting a resin into a gap around the cable in the cable insertion hole.

According to the present invention, as described above, a cable anchor is used in which a cable fixing body made of resin-impregnated concrete with high strength and excellent fatigue resistance or resin-impregnated mortar is integrally molded into a steel socket. Insert the cable into the cable insertion hole provided on the body, and insert the tip of the cable into the
It is fixed to the end surface of the cable fixing body through a fixing part such as a wedge, a button head, a compression grip, or the like.

Furthermore, by injecting resin into the gap between the cable insertion hole provided in the cable fixing body and the cable outer circumference, the cable fixing force is increased by the adhesion force between the resin and the cable and the cable end. The cable is supported by a fixing section, and the cable is securely fixed to the cable anchor.

The resin injected between the cable and the cable insertion hole of the cable fixing body has strong adhesion and excellent fatigue resistance, and also has good adhesion to concrete surfaces.
Since it blends well with the mortar surface, it constitutes a cable anchor part with high strength and excellent fatigue resistance.

The present invention will be described below with reference to the illustrated embodiments.
A cable anchor is constructed by integrally molding a cable fixing body 3 made of resin-impregnated concrete or resin-impregnated mortar and having a cable insertion hole 2 in a steel socket 1.

Although ribs 4 are provided on the inner circumferential surface of the socket 1 to resist shearing forces, they are not necessary if there is sufficient adhesion force. Also, the cable fixing body 3
A steel bearing plate 5 is embedded in the bearing surface of the cable fixing body 3, but the cable may be fixed directly to the end face of the cable fixing body 3.

When fixing the cable 6, the cable 6 is inserted into the cable insertion hole 2 of the cable fixing body 3.
The end fixing portion 7 of the cable 6 is fixed to the end surface of the cable fixing body 3.

The end fixing portion 7 of the cable 6 may be a wedge, a button head, a compression grip, or the like.

As described above, the cable 6 is attached to the cable fixing body 3.
After the cable 6 is fixed, resin 8 is injected into the gap around the outer circumference of the cable 6 in the cable insertion hole 2, and the cable 6 is fixed by dividing it into a fixing part at the end of the cable and the adhesion force between the cable and the resin.

The cable fixing body 3 made of resin-impregnated concrete or resin-impregnated mortar has high strength and excellent fatigue resistance, and securely fixes the cable 6.

2 to 4 show the process of manufacturing the cable anchor and fixing the cable using the same anchor. As shown in FIG. 2, the inside of the steel socket 1 is filled with concrete or mortar, and the cable insertion hole 2 is After the concrete or mortar hardens, it is impregnated with a resin such as acrylic resin to form the cable anchor 3. At this time, pressure is applied under reduced pressure to impregnate the resin.

(See Figure 2) Next, the cable 6 is inserted into the cable insertion hole 2 of the cable fixing body 3 integrally molded inside the steel socket 1 as described above, and the end fixing part 7 is inserted. is fixed to the end face of the cable fixing body 3 (see FIG. 3), and resin 8 is injected into the gap around the cable 6 in the cable insertion hole 2. (See Figure 4).

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing the implementation status of an embodiment of the cable fixing method according to the present invention, and FIGS. 2 to 4 are partial vertical cross-sectional views showing the manufacturing process of a cable anchor and the cable anchoring process using the same anchor. It is a diagram. 1...Steel socket, 2...Cable insertion hole,
3... Cable fixing body, 6... Cable, 8...
resin.

Claims (1)

[Claims] 1 Insert a cable into the cable insertion hole in a cable anchor made of a cable anchor made of resin-impregnated concrete or resin-impregnated mortar integrally molded with a cable insertion hole in a steel socket. A method for fixing a cable anchor, comprising fixing a cable end fixing part to an end surface of the cable fixing body, and then injecting a resin into a gap around the cable in the cable insertion hole.