JPH0132323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixed support that supports a bridge, an elevated structure, and particularly a girder such as a monorail that uses a bridge girder as a track, at a single fulcrum.

In general, the width of girder supports such as monorails is narrower than that of bridges and elevated structures such as roads and railways, so they are affected by centrifugal force or wind loads caused by vehicle traffic. Vertical, horizontal, and horizontal loads due to overturning moments are particularly likely to occur.

For this reason, the bearings that support the girder on the pier can support the load, and since the girder itself is used as a track, when installing the girder, it is necessary to make sure that the track surfaces of the adjacent girders are the same. It is desired that the structure be such that the height (left and right), horizontal position, or inclination can be adjusted.

In addition, in the bearings that support the girders of monorails, etc., the girders are positioned on the piers in the same way as those used for general road and railway bridges, and the girder expands and contracts due to temperature changes and in the vertical plane due to the action of loads. In order to deal with displacements such as inclination (deflection) of the girder, in addition to the fixed bearing function, which has the function of relieving only the inclination in the vertical plane of the girder, and the function of the fixed bearing, in particular, the movement of the girder in the direction of the bridge axis. A movable bearing is used that has the function of escaping expansion and contraction.

The arrangement of these is determined by the configuration of the bridge; for example, in a continuous girder, fixed supports are placed on a specific pier, movable bearings are placed on other piers, and in the case of a simple girder, fixed supports are placed on the pier that supports one end of the girder. It is always used in combination with a movable support on the pier that supports the other end.

In view of these, various studies have been conducted on supports that support a girder at a single fulcrum. A structure has been proposed in which the girder and the bridge pier are connected with separately provided anchor bolts, or a structure in which a bearing member consisting of a roller is used.

However, in order to satisfy the above-mentioned performance, these devices still have problems such as a complicated structure and an increased number of parts.

The present invention provides a fixed support that particularly satisfies the above performance, reduces the number of parts, and has a simple welded structure that facilitates manufacture and installation.

That is, a bed plate that is inserted into an anchor bolt arranged on a lower structure such as a bridge pier and placed and fixed on the lower structure, a casing that is embedded and fixed on the upper structure such as a bridge girder, and a space between the casing and the bed plate. The casing is formed into a box shape with an opening at one end, and the casing is attached to the upper structure. It is buried and fixed with its opening facing toward the lower surface of the upper structure.

A fixing member is provided at one end of the columnar body disposed on the bed plate, and a through hole into which an anchor bolt is inserted is formed in the fixing member, and the other end is fitted into the casing. There is a bearing member between the end face and the bottom face of the casing, and a guide member between the sides in the direction perpendicular to the bridge axis.
It is disposed to be locked or fixed to either the columnar body or the casing, and furthermore, a movement restriction part is provided between the side surfaces in the bridge axis direction or between the end face and the bottom surface to restrict movement of the casing in the bridge axis direction. There is.

With this configuration, the height and horizontal position can be adjusted either between the bed plate and the lower structure or between the bed plate and the columnar body, and the bed plate and the columnar body can be used to fix the columnar body to the lower structure. The present invention provides a fixed support characterized in that the members are integrally connected by anchor bolts.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, G is an upper structure such as a bridge girder, B is a lower structure such as a bridge pier, and C is a fixed support disposed between the upper and lower structures G and B.

Reference numeral 1 designates a bed plate of a fixed support C, and the bed plate 1 is provided with holes 4, 4 in the lower structure B into which anchor bolts 3, 3 supported by the anchor frame 2 are inserted, and holes 4, 4 are provided at the edges thereof. An adjustment member 5 made of a bolt for adjusting the height is arranged at the part.

Reference numeral 6 denotes a backing plate with which the adjustment member 5 comes into contact.

Reference numeral 7 denotes a columnar body of a fixed support C, and the columnar body 7 is formed of a welded structure with a fixing member 8 provided at one end disposed on the bed plate 1.

9, 9' are flanges constituting the fixing member 8;
Reference numerals 10 and 10' indicate through holes into which the anchor bolts 3 provided on the flanges 9 and 9' are inserted;
0 and 10' are formed to have a size that allows the horizontal position of the columnar body 7 to be adjusted on the bed plate 1.

Reference numeral 11 denotes a washer for fixing the columnar body 7 with the anchor bolt 3, and the washer 11 is formed in a size that covers a through hole 10' provided in the flange 9'.

12 is a side surface of the columnar body 7 in the bridge axis direction, and 13 is a side surface of the columnar body 7 in the direction perpendicular to the bridge axis.

Reference numeral 14 denotes a casing of the fixed support C, and the casing 14 has an opening 15 at one end, and a side surface 16 in the bridge axis direction has a columnar body 7 fitted into the casing 14.
A box-shaped welded structure is formed with a gap 17 between the side surface 12 and the upper structure G to allow the inclination of the upper structure G to escape, and a side surface 18 in the direction perpendicular to the bridge axis has a minute gap 19 with the side surface 13 of the columnar body.

Reference numeral 20 denotes a bearing member disposed between the casing 14 and the columnar body 7, and the bearing member 20 has one surface formed into a convex curved surface 21 and the other surface formed into a flat surface 22.

The bearing pressure member 20 has the axis of the convex curved surface 21 oriented in a direction perpendicular to the bridge axis so that the convex curved surface 21 is in sliding contact with the end surface 23 of the columnar body, and its plane 22 is directed to the bottom surface corresponding to the opening 15 of the casing. 24 by means such as welding, and supports the vertical load acting on the upper structure G, and also relieves the tilt of the upper structure G.

Reference numeral 25 denotes a movement restriction part that restricts movement of the casing 14 in the bridge axis direction, and the movement restriction part 25 is locked to the end surface 23 of the columnar body so as to restrict the sliding movement of the bearing pressure member 20 in the direction. It is constructed by fixing the block 26.

27 is the side surface 18 of the casing and the side surface 1 of the columnar body
A plate-shaped guide member disposed between the guide member 2 and the guide member 2.
7 is fixedly disposed on the side surface 18 of the casing by, for example, adhesive or welding, so as to fill the gap 19 formed between the side surfaces 18 and 13.

The guide member 27 supports the horizontal load of the upper structure G, guides the casing 14 to follow the movement of the upper structure G, and serves to maintain a constant positional relationship between the casing 14 and the columnar body 7. It is something that does.

28 is mortar filled between the bed plate 1 and the lower structure B.

Below, the assembly and installation of the fixed support C of the present invention will be explained in detail.

In the fixed support C of the present invention, the bed plate 1 is placed on the lower structure B by inserting the hole 4 into the anchor bolt 3 fixed in advance to the lower structure B, and supporting it with the adjustment member 5. Next, the columnar body 7 is arranged on the bed plate 1 by inserting the anchor bolt 3 into the through holes 10, 10' provided in the flanges 9, 9' of the fixing member.

In this state, by adjusting the height of the columnar body 7 using the adjustment member 5, that is, the height of the bed plate 1 supported by the adjustment member 5, the columnar body arranged on the bed plate 1 can be adjusted. By adjusting the height of the columnar body 7 and sliding the columnar body 7 on the bed plate 1, the horizontal position of the columnar body 7 can be adjusted. Adjust by sliding within the gap range of 10 and 10'.

After the adjustment, the columnar body 7 and the bed plate 1 are integrated by fixing the fixing member 8 of the columnar body to the bed plate 1 by means such as welding, and then the bed plate 1 is attached to the lower structure B. The columnar body 7 is connected to the lower structure B by filling mortar 28 between the plate 1 and the lower structure B to fix the plate 1 and the lower structure B, and then fixing the fixing member 8 with the anchor bolt 3.

After that, a bearing member 20 is attached to the bottom surface 24 of the columnar body 7.
However, there is also a guide member 27 on the side surface 18 in the direction perpendicular to the bridge axis.
The casing 14 in which the guide member 27 is disposed on the side surface 13 of the columnar body and the bearing member 20 is disposed on the end face 23 of the columnar body are located between the locking blocks 26 constituting the movement restricting portion 25. , and its end face 23
The casing 1 is attached to the superstructure G so as to slide on the upper structure G.
When manufacturing the upper structure G, the lower surface of the upper structure G and the opening 15 are buried and fixed on the same level, and the upper structure G is fitted and installed through the opening 15 of the upper structure G, thereby being assembled and installed. .

Here, a method has been described in which the upper structure G is manufactured by burying and fixing only the casing 14 in advance in a factory etc., and is transported and placed on the lower structure B. There is also a method of temporarily fixing the columnar body 7 and the bed plate 1 to the casing 14 fixed to the upper structure G, and transporting and placing it on the lower structure B. Alternatively, there is also a method of manufacturing directly on the lower structure B using a formwork. It can be adopted.

In the former case, after fixing the columnar body 7 to the lower structure B, the temporary fixing is removed, and in the latter case, the casing 14 is fixed.
is fixed to the upper structure G by placing it on the lower structure B by fitting it into the columnar body 7 in advance, and fixing it when the upper structure G is manufactured.

In this embodiment, the height and horizontal position adjustments and furthermore the fixing of the bed plate 1 and the columnar body 7 to the lower structure B are described as being performed at the time the columnar body 7 is arranged on the bed plate 1. However, once the casing 14 is fitted into the columnar body 7, even if the adjustment and fixing are performed, there is no difference in the effect.

In addition, although the embodiment has been described in which the adjustment member 5 is composed of bolts and arranged on the bed plate 1 in order to adjust the height, it is possible to use other embodiments without using the bolts, such as anchor bolts 3, a steel plate, or even a temporary receiver. It is also possible to use

To be more specific, the mode in which the anchor bolt 3 is used is that the anchor bolt 3 protrudes from the lower structure B.
A threaded portion is formed on the entire surface of the screw, and an adjusting member 5 is attached to the threaded portion.
By screwing in the nut that constitutes the bed plate 1 and supporting the bed plate 1 with the nut, the height can be adjusted at the top and bottom of the nut. Adjusting the height by inserting a steel plate and using a temporary support is particularly useful when the upper structure G and fixed support C are integrated and placed on the lower structure B. An embodiment is also possible in which the upper structure G is supported by the upper structure G and its position (height and horizontal position) is adjusted.

In addition, to enable horizontal position adjustment,
Although a mode has been described in which a gap is formed between the anchor bolt 3 fixed to the lower structure B in advance and the through holes 10, 10' of the fixing member 8, and the position is adjusted within the gap range, the present invention is not limited to this mode but generally. It is also possible to adopt a mode in which the anchor bolt 3 being used is moved.

That is, the anchor bolt 3 is attached to the lower structure B,
The anchor bolt 3 is inserted into a protective tube that allows horizontal movement but is locked upward, and the protective tube is arranged so as to fit into the bed plate 1 on the upper surface of the lower structure B.

The fixing member 8 of the columnar body is provided with through holes 10 and 10' having a small gap with the anchor bolt 3, and by inserting the anchor bolt 3, the horizontal position of the columnar body 7 can be adjusted. Along with
It is also possible to adopt a mode in which the anchor bolt 3 is moved within the protective tube and fixed to the protective tube.

With this configuration, the number of parts can be reduced, and since it is a welded structure, it can be manufactured easily.Furthermore, its height and horizontal position can be easily adjusted, and it can act on the upper structure G. It can also support loads smoothly.

Further, the inclination of the upper structure G is determined by the sliding of the guide member 27 disposed between the casing 14 and the side surfaces 13 and 18 of the columnar body 7 in the direction perpendicular to the bridge axis, the end surface 23 of the columnar body, and the convex curved surface 21 of the bearing member. It can be released by movement, and expansion and contraction is restricted by a movement restricting section 25 made of a locking block 26.

The embodiment shown in FIGS. 4 to 11 is a part A in FIG.
5 shows another aspect of No. 5.

That is, in the embodiment shown in FIG. 4, the bearing pressure member 20 is fixed to the columnar body 7 so as to slide on the bottom surface 24 of the casing 14, and the locking block 26 constituting the movement regulating section 25 is provided on the bottom surface 24 of the casing. This shows a configuration opposite to that of the present embodiment.

In the embodiment shown in FIG. 5, one surface of the bearing pressure member 20 is formed as a convex spherical surface 29 and the other surface is formed as a flat surface 30, and the convex spherical surface 29 of the bearing pressure member slides on the end surface 23 of the columnar body. This shows an embodiment in which a locking block 26 forming a concave spherical surface 31 and constituting a movement restricting portion 25 is provided on the bottom surface 24 of the casing.

With this configuration, the load of the upper structure G is supported by the surface, and the inclination is released by sliding between the concave spherical surface 31 provided on the end surface of the columnar body and the convex spherical surface 29 of the bearing member.

The embodiment shown in FIG. 6 is a so-called hinge mechanism in which the bearing pressure member 20 is constituted by a roller 32 and a locking block 26 constituting a movement regulating portion 25 is provided on the end face 23 of the columnar body. be.

With this configuration, the inclination of the upper structure G is relieved by the rotation of the rollers 32.

In the embodiment shown in FIG. 7, the bearing pressure member 20 is
A fitting recess 35 is formed of a rubber elastic body 34 reinforced with 3, and constitutes a movement regulating part 25 on the bottom surface 24 of the casing and the end surface 23 of the columnar body.
35' is shown.

With this configuration, the load of the upper structure G is supported on the surface, and the inclination is relieved by deformation of the rubber elastic body 35.

In the embodiment shown in FIG. 8, the bearing pressure member 20 has the same structure as that of the embodiment shown in FIG. This figure shows an embodiment in which an engaging recess 36 is provided in the engaging recess 36, and the flat surface 30 of the bearing pressure member is fitted into the engaging recess 36 to restrain its movement.

In the embodiment shown in FIG. 9, the bearing pressure member 20 is composed of a rubber elastic body 37 and an intermediate plate 38, and a recess 39 is formed in the end surface 23 of the columnar body, and the movement regulating part 25 is shown in FIG. By making it the same as the embodiment, the rubber elastic body 37 is housed in the recess 39, and the intermediate plate 38 is fitted onto the rubber elastic body 37 into the engagement recess 36 provided on the bottom surface 24 of the casing. This figure shows the arrangement.

With this configuration, the load of the upper structure G is supported by the surface, and the inclination is relieved by deformation of the rubber elastic body 30.

The embodiments shown in FIGS. 10 and 11 show modified embodiments of the locking block 26 constituting the movement restricting portion 25. As shown in FIG.

That is, in FIG. 10, the locking block 2
6, one surface is a convex curved surface 40, and the other surface is a flat surface 4
1, and its mounting position is formed on the convex curved surface 4.
This figure shows an embodiment in which a fitting recess 42 is provided in the side surface 12 of the columnar body so that the side surface 16 of the columnar body contacts the side surface 16 of the casing in the bridge axis direction, and a flat surface 41 is fitted and fixed in the fitting recess 42.

With this configuration, the inclination of the upper structure G is relieved by the casing 14 sliding along the convex curved surface 40.

Note that the locking block 26 has a convex curved surface 40.
It is also possible to arrange it in such a manner that it abuts against the side surface 12 of the columnar body, a so-called reverse mode.

FIG. 11 shows an embodiment in which the locking block 26 is made of a rubber elastic body 44 reinforced with a reinforcing plate 43, and its mounting manner is the same as the embodiment shown in FIG. 10. It is.

In addition, in order to release the inclination of the superstructure G, the fifth
8 and 9, the concave spherical surface 31 and the recess 39 are provided on the end surface 23 of the columnar body. However, in the embodiment shown in FIG. 8 and FIG. It may be any other mode, and is not limited to only the illustrated mode.

Moreover, the bearing pressure member 20 and the first
The material of the locking block 26 constituting the movement regulating portion 25 shown in FIG. It is preferable that a plate or the like is embedded therein, and the roller 32 of the embodiment shown in FIG. 6 is preferably provided with a hardened layer or a hard overlay layer on its sliding surface.

In addition, the embodiment shown in FIGS. 12 and 13 is based on the so-called guide member 27 in the D section in FIG.
This shows another aspect of.

That is, the embodiment shown in FIG.
This figure shows a mode in which the casing is fitted into an engagement recess 45 provided on the side surface 13 of the columnar body, and a sliding contact plate 46 made of stainless steel or the like is arranged on the side surface 18 of the casing, which is the opposite mounting mode from this embodiment. be.

In the embodiment shown in FIG. 13, one surface of the guide member 27 is formed as a flat surface 47 and the other surface as a convex curved surface 48, and a fitting recess 49 into which the flat surface 47 fits is provided in the side surface 13 of the columnar body. This shows the mode.

With this configuration, it is possible to support the force acting on the upper structure G in the direction perpendicular to the bridge axis, and also to guide the casing 14 to follow the movement of the upper structure G and to maintain the position of the columnar body 7 and the casing 14. It is.

In addition, in this embodiment and the embodiment shown in FIG. 12, the material of these guide members 27 is such that the base is formed of a bearing alloy material or steel material, and the sliding surface is coated with a solid lubricant or fluorine resin. Preferably, the material has a plate embedded therein, a steel plate coated with a synthetic resin, or even a single synthetic resin plate.

Further, in the embodiment shown in FIG. 13, it is preferable that the base is formed of a bearing alloy material or steel material, and that a solid lubricant or a fluororesin plate is embedded in the convex curved surface 48. .

The present invention has the above-described configuration, and the number of parts can be reduced, and since the present invention has a welded structure, manufacturing can be performed easily.

In addition, the height and horizontal position can be easily adjusted, and the load acting on the superstructure can be smoothly supported, which has the great effect of improving workability and functionality.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the arrangement of fixed bearings;
The figure is a partially longitudinal side view showing the fixed support of the present invention,
Figure 3 is a partially longitudinal front view, and Figure 4 to 1.
FIG. 1 is a cross-sectional view showing another example of the bearing pressure member and the movement regulating part, and FIGS. 12 and 13 are cross-sectional views showing other examples of the guide member. 1: bed plate, 3: anchor bolt,
7: Column body, 8: Fixing member, 10, 10': Through hole, 13, 18: Side surface, 14: Casing, 1
5: opening, 20: bearing member, 23: end surface, 2
4: Bottom surface, 25: Movement restriction section, 27: Guide member.

Claims (1)

[Claims] 1 A bed plate that is placed and fixed on the lower structure by being inserted into an anchor bolt arranged on a lower structure such as a bridge pier, a casing that is embedded and fixed on the upper structure such as a bridge girder, and a space between the casing and the bed plate. The casing is formed into a box shape with an opening at one end, and the casing is attached to the upper structure. The columnar body is buried and fixed with its opening facing toward the lower surface of the upper structure, and a fixing member is provided at one end of the columnar body disposed on the bed plate, and the fixing member has a through hole into which an anchor bolt is inserted. A hole is formed at the other end that is inserted into the casing, and a bearing member is provided between the end surface and the bottom surface of the casing.
A guide member is disposed between the side surfaces in the direction perpendicular to the bridge axis, and is locked or fixed to either the columnar body or the casing, and a guide member is disposed between the side surfaces in the direction of the bridge axis or between the end face and the bottom face of the casing. A movement regulating section is provided to regulate movement in the direction, and its height and horizontal position are adjusted either between the lower structure and the bed plate or between the bed plate and the columnar body, and the bed plate and the columnar body are A fixed support characterized in that it is integrally connected to a lower structure by an anchor bolt via a fixing member of the columnar body.