JPS60112905A - Apparatus for supporting fixed end of structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure fixed end support device for supporting a fixed end of a structure such as a bridge so that the fixed end thereof can be fully rotated and prevented from moving laterally.

Next, the present invention will be explained in detail by way of fully illustrated example.

The drawing shows one embodiment of the present invention, in which a cross-shaped rib 10 embedded in a support structure 1 such as a concrete vat abutment or a bridge pier is integrated into the lower part of a metal lower support member 2. Anchoring reinforcing bars 11 are fixed by welding and are embedded in the support structure 1, and the upper part of the metal upper support member 5 is provided with supported objects such as bridge girders made of concrete IJ. The cross-shaped ribs 12 embedded in the structure 4 are integrally connected, and the anchoring reinforcing bars 16 are embedded in the structure 4.
is fixed by welding.

A lower concave spherical surface 6 that opens upward is provided on the upper part of the lower support member 2, and flantz 14 are integrally provided on both sides of the lower support member 2 in a direction perpendicular to the longitudinal direction of the structure. The flange 14 has a through hole 15 for bolt insertion.
Further, an upper concave spherical surface 6 that opens downward is provided at the lower part of the soil support member 5, and flantz 16 are integrally formed on both sides of the upper support member 5 in the direction perpendicular to the longitudinal direction of the structure. A through hole 17 for bolt insertion is provided in the flange 16 connected to the flange 16.

The upper concave spherical surface 6 of the upper support member 5 is disposed above and opposite to the lower concave spherical surface 6 of the lower support member 2, and the lower convex spherical surface 8 formed at the lower part of the metal bearing member 7 is connected to the lower concave spherical surface 6 of the lower support member 2. The upper convex spherical surface 9, which is fitted into the spherical surface B and formed on the upper part of the bearing part @7, is fitted into the upper concave spherical surface B.

Through holes 15 in each of the Franz 14 and 16. The nut 19 was screwed into the bolt 18, and the lower i5B bearing was removed by the bolt 18 and nut 19.
and the upper support member 5 are tightened together via the bearing member 7, and in this state, the lower support part 4Δ2 is fixed to the support structure 1, and the upper support member 5 is fixed to the fixed side end of the structure 4. After that, the tightening by the bolts and nuts is released so as not to impede the rotation of the structure 4 (vertical rotation around the support part).

In the device of the above embodiment, a significantly large horizontal force acts on the structure 4, and the bearing assembly 7 tries to rise along the lower concave spherical surface B of the lower support member 2, and
When the upper support member 5 attempts to rise along the upper convex spherical surface 9 of the bearing member 7, the upward movement of the upper part 9 is prevented by the bolt 18 and nut 19.

When carrying out this invention, the lower support member 2 and the upper support member 5 are made of steel, such as cast steel, and the bearing member 7 is made of a softer metal than the lower support member 2 and the upper support member 5, such as JIS, H5102 high grade. For brass castings or other yellow %1 grade, to t + 'J
'! ! I1~,11 I1.1 Peno' Ring Gua i11.11'7 <tI・jll (If the bearing part phase 2 and the upper support member 5 are also made of soft metal, the bearing member 7 and the lower support member 2 and soil support member 5 can be made to fit better.

Further, it is preferable to provide a large number of shallow recesses in the lower concave spherical surface 6 and the upper convex spherical surface 9, and to store graphite lubricant in the recesses, since rotational resistance can be reduced. Furthermore, said Franz 14.16 and bolt 18. The nut 19 may be omitted.

According to the present invention, the lower concave spherical surface 6 opening upward is provided on the upper part of the metal lower support member 2 fixed to the upper part of the support structure 1, and the metal upper part fixed to the lower part of the structure 4 An upper concave spherical surface 6 that opens downward 1 is provided at the lower part of the bearing member 5, and a lower convex spherical surface 8 formed at the lower part of the metal bearing member 7 is fitted into the lower concave spherical surface 6. Since the upper convex spherical surface 9 formed on the upper part of the bearing member 7 is fitted into the upper concave spherical surface B, the lower convex spherical surface 8 rotates relative to the lower concave spherical surface 6 or the upper concave spherical surface rotates 60 times relative to the upper convex spherical surface 9. 40 rotations of the structure (vertical rotation around the support center) and torsion, etc. due to the rotation of both of them, and each of them was constructed with a metal mouthpiece. The lower support member 2, the bearing member 7, and the upper support member 5 can always be brought into surface contact, so that the bearing device can be manufactured in a small size and at low cost. 8
Since a large load from the structure 4 is applied to the fitting part between the upper concave spherical surface 6 and the upper convex spherical surface 9, lateral displacement of the structure due to horizontal force is prevented. , so that the lower bearing member 2 and the bearing member 7
and between the upper support member 5 and the bear 1 non-gang member 7 or between the lower support member 2 and the upper sound support member 5. Effects can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a side view showing how the fixed end support device for structures is used, and FIG. 2 is an enlarged longitudinal section showing how the fixed end support device for structures is used. A front view, FIG. 6 is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 is a partially longitudinal H7 (II! It is.

Claims (1)

[Claims] A metal lower support member 2 fixed to the upper part of the support structure 1
A lower concave spherical surface 6 that opens upward is provided at the upper part of the
An upper concave spherical surface 6 that opens downward is provided at the lower part of the metal upper support member 5 fixed to the lower part of the structure 4, and the lower convex spherical surface 8 formed at the lower part of the metal bearing member 7 is connected to the lower concave surface. An upper convex spherical surface 9 formed on the upper part of the bearing member 7 is fitted into the spherical surface B, and an upper concave spherical surface 6 is fitted into the upper concave spherical surface 6.