JPS6366962B2 - - Google Patents

Description

Detailed Description of the Invention The present invention relates to a support for a monorail girder, etc. that uses a girder member as a track and supports the end of the girder member fixedly or movably. This invention relates to a support that can resist overturning moments in the direction perpendicular to the bridge axis. Note that the present invention is not intended only for monorail girders, but any girder member used under the same conditions as monorail girders, regardless of whether it is a bridge or a structure, is covered by the present invention.

Generally, as shown in Figure 1, in a straddle type monorail girder (also called a track girder) G, the girder G is positioned on the pier B and Movable and fixed support devices S, each having a structure capable of escaping displacements such as expansion and contraction of the girder due to temperature changes and inclination (deflection) in a vertical plane due to the action of load, are arranged at both lower ends of the girder.

On the other hand, such a straddle-type monorail girder has a narrow girder width compared to general bridge girder members, and has a virtually elongated rectangular cross section (or I-shaped cross section), and the parallel girders are Because they are constructed independently of each other (horizontal grooves such as diagonals cannot be installed between the girders), they are susceptible to the effects of wind loads and/or centrifugal force generated by vehicle traffic on the curved portions of the girders. , not only vertical loads but also horizontal loads (perpendicular to the bridge axis) (horizontal overturning loads)
acts particularly strongly, generating an overturning moment.

In order to prevent the monorail girder from overturning due to this overturning moment, in the past, a high-strength member was used for the supporting device used, and an engaging part was provided on the upper and lower shoes to prevent overturning, resulting in a complicated shape. , has become expensive.

Furthermore, in accordance with Japanese Patent Application No. 55-55652, the present applicants have previously embedded and fixed a bottomed casing in a girder member with its opening facing downward, and inserted a columnar body fixed to a pier into the casing. We proposed a support that can be inserted through the casing and a bearing member and a guide member are arranged between the two (the casing and the columnar body) to effectively cope with the overturning moment. However, this method reduces the effective cross section of the upper girder member in which the casing is buried in the girder member, which poses problems in terms of strength. It is necessary.

The present invention has been made in view of the above-mentioned circumstances, and while inheriting the technical idea of the above-mentioned prior art proposed earlier, its technical problem is to obtain support that allows for a more rational design. Therefore, the present invention was developed by focusing on the rigidity of the trapezoidal or trilateral shape and the fact that this shape is the most rational shape for supporting and transmitting loads as a support device for a monorail girder.

The monorail girder support of the present invention adopts the following configuration (technical means) in order to solve the above technical problem. That is, it consists of an upper shoe that is fixed to the lower surface of the girder member and a lower shoe that is fixed to the upper surface of the lower structure with a fixing means that is anchored to the lower structure. The legs face each other at right angles and open like legs, and a concave groove is formed in the bridge axis direction between the ceiling surface and the inner wall surface, and the lower shoe has a shape that fits into the concave groove of the upper shoe. The upper surface of the upper shoe is spaced apart from the ceiling surface of the upper shoe, and the outer surface of the outer shoe in the direction perpendicular to the bridge axis is spaced apart from the inner wall surface of the upper shoe, and the upper surface of the upper shoe is spaced apart from the ceiling surface of the upper shoe. A bearing member is disposed between the upper shoe and the upper surface of the lower shoe, and between the upper part of the inner wall surface of the upper shoe and the upper part of the outer surface of the lower shoe, and the upper part of the upper shoe in the direction perpendicular to the bridge axis. An upper guide member and a lower guide member are arranged between the lower part of the inner wall surface of the shoe and the lower part of the outer surface of the lower shoe, respectively, to cut off the transmission of force in the vertical direction.

With the above configuration, the present invention has the following effects.
The vertical load acting on the girder members of the monorail girder is transmitted from the upper shoe to the lower shoe via the bearing member, and the lower shoe has a substantially three-sided or ladder-shaped rigid structure with the bearing member at the apex. None, the vertical load is widely and evenly distributed and transmitted to the lower structure at the bottom in contact with the lower structure. In addition, the horizontal overturning load is transmitted to the lower shoe via the upper guide member and the lower guide member located diagonally from the split-shaped inner wall surface of the upper shoe. Only a small bearing force is required on the structure, and overturning moment is effectively prevented. Furthermore, the guide member does not transmit vertical force acting on the upper shoe, but simply contacts the upper shoe, thereby guiding the movement of the upper shoe that follows the movement of the upper structure, and preventing rotation of the upper shoe due to deflection of the upper structure. It can be smoothly released and has the function of maintaining the relative position of the upper shoe and the lower shoe with respect to the direction perpendicular to the bridge axis.

In addition, as is clear from the above-mentioned action, the function of the bearing member is sufficient as long as it can transmit the vertical load from the upper shoe to the lower shoe, and is not particularly limited to its structure.
It adopts an appropriate supporting mode, whether fixed or movable.

Since the present invention has the above configuration and functions, it has the following unique effects.

Since the entire support resists horizontal overturning loads and has a structure that is rigid against overturning, the entire support can be downsized and can be designed rationally.

It can be easily installed on the superstructure (girder member) or substructure.

The shape can be simplified and it can be constructed from general steel or cast steel without using high-strength materials.

The present invention adopts the following embodiments depending on the aspect of the means for fixing the lower shoe to the lower structure.

The lower shoe is fixed to the lower structure using anchor bolts anchored to the lower structure.

The lower shoe is supported by a lower shoe support member at both ends of the lower surface in the direction perpendicular to the bridge axis, and is fixed in the vertical direction by an anchor bolt that passes through the lower shoe support member and is anchored to the lower structure. Fixed in the horizontal direction with a stopper. This aspect allows the bearing to be adjusted in position in the vertical direction (height and inclination).

In addition to the above aspects, the anchor bolt anchored to the lower structure is movable in the horizontal direction within the space within the sheath tube embedded in the lower structure. This connection mode allows the support to be adjusted in position not only vertically but also horizontally.

Embodiments of the present invention will be described below with reference to FIGS. 2 to 9.

In the figure, G is a girder member such as a monorail girder, B is
is a lower structure such as a bridge pier, and S is a support for the monorail girder of the present invention. In addition, the A direction indicates the direction perpendicular to the bridge axis, and the B direction indicates the bridge axis direction.

The support S consists of the main components of an upper shoe 1, a lower shoe 2, a bearing pressure member 3, an upper guide member 4, and a lower guide member 5, as well as a lower shoe support member 6, a base plate 7, a horizontal force stop 8, and a sheath pipe. Members such as 94 are added as appropriate.

2 to 4 show a bearing according to the invention which allows the lower shoe 2 to be fixed directly to the substructure B. FIGS.

The upper shoe 1 has a main body that extends from the flat ceiling plate 11 and the ceiling surface 111 on the lower side of the ceiling plate in the direction perpendicular to the bridge axis (direction A in the figure) in a leg-like shape (that is, in a V-shape). It consists of a protruding leg wall plate 12. The ceiling plate 11 and the leg wall plate 12 are integrally formed. Thus, a concave groove 1A is formed in the ceiling surface 111 of the ceiling board and the inner wall surface 121 of the leg wall board 12 in the bridge axis direction (direction B in the figure). In addition, the inner wall surface 1 of the leg wall board 12
The upper and lower parts of the guide member 21 are normally formed into vertical surfaces so that the sliding plate that comes into sliding contact with the convex curved surface of the guide member, which will be described later, can be easily arranged vertically. The shape is not particularly limited to the shape of this embodiment. Additionally, a reinforcing frame 13 and ribs 14 are provided to supplement the rigidity of the main body. That is, the reinforcing frame 13 is a member that connects the leg wall plates 12 to each other on the side surface of the upper shoe 1 in the bridge axis direction (direction R in the figure), and the rib 14 is a member that connects the leg wall plates 12 to each other on the side surface of the upper shoe 1 in the direction perpendicular to the bridge axis (direction R in the figure). This is a member that connects the ceiling plate 11 and the leg wall plate 12 on the side surface in the A direction), and both members are also integrally molded. 1B is a ceiling plate 11, a leg wall plate 12, and a reinforcing frame 1 on the side surface of the upper shoe 1 in the bridge axis direction.
3, and 1C is an anchor member fixed to the upper surface of the upper shoe 1 by screwing or welding and embedded in the girder member G.

The lower shoe 2 has an overall shape that fits into the groove 1A of the upper shoe 1, that is, a trapezoidal shape, and includes an upper side portion 21, two oblique side plates 22, and a bottom side plate 2.
3, and the cross section in the direction perpendicular to the bridge axis forms a substantially trilateral shape. 2A is a hollow portion surrounded by the three sides and penetrating in the bridge axis direction. However, the lower shoe 2 is the upper shoe 1
It is arranged with a certain gap in the concave groove 1A. In other words, the upper shoe 1 is arranged astride the lower shoe 2. Further, anchor mounting ribs 24 are stretched at both ends of the bottom plate 23 in the bridge axis direction, and the anchor bolts 2B embedded in the lower structure B are inserted into the bolt through holes 241 of the ribs 24, and the spherical nuts 91 and Tighten with the spherical washer 92 to anchor the lower shoe 2 to the lower structure B. Reference numeral 25 denotes a floating prevention member fixed to the side surface of the upper side portion 21 in the bridge axis direction with a bolt 26, and projects into the window portion 1B of the upper shoe 1. The lifting prevention member 25 is a reinforcing frame 1 of the upper shoe 1.
The upper shoe 1 is prevented from floating by engaging with the upper surface of the upper shoe 3, and is attached by bolts 26 after the lower shoe 2 is fitted into the upper shoe 1. In addition, 23A is the bottom plate 23
This is a rib attached to the underside of the anchor.

The bearing pressure member 3 is attached to the ceiling surface 111 of the ceiling board of the upper shoe 1.
and the upper surface 211 of the upper side of the lower shoe 2. The bearing pressure member 3 is connected to the upper surface 211 of the lower shoe 2.
A sliding plate whose outer surface is formed into a convexly curved surface 3A such as a cylindrical or spherical surface, and whose convexly curved surface 3A is attached to the ceiling surface 111 of the ceiling board of the upper shoe 1 by welding or fixing. It is brought into sliding contact with the contact plate 31. In addition, when the convex curved surface 3A is a cylindrical surface, it is arranged with its axis directed in a direction perpendicular to the bridge axis. Therefore, the bearing member 3 supports the vertical load acting on the upper structure G, and also functions to release the expansion/contraction and inclination (rotation) of the upper structure G (i.e., a movable support), or (i.e. fixed bearing)
It is something. FIG. 5 shows the structure of the fixed support, in which engaging parts 32 are formed at both ends of the bearing pressure member 3 in the bridge axis direction, and a movement regulating member 33 is formed adjacent to the engaging parts 32. is the ceiling surface 1 of the ceiling board of upper shoe 1
It is fixedly installed at 11. In the movable support, such a structure is omitted or the engaging part 3
The gap between 2 and the movement regulating member 33 is made large enough to allow a sufficient amount of movement as a movable support. Further, without adopting such a configuration, a fixed or movable support can be constructed by engaging the reinforcing frame 13 of the upper shoe 1 and the side surface of the lower shoe 2 in the bridge axis direction in the bridge axis direction.
Note that, of course, if the ceiling surface 111 of the ceiling board 11 is sufficiently smooth and hard, the sliding contact plate 31 can be omitted.

The upper guide member 4 is interposed between the upper part of the inner wall surface (that is, the vertical surface part) of the leg wall plate 12 of the upper shoe 1 and the side surface of the upper side part 21 of the lower shoe 2 with respect to the direction perpendicular to the bridge axis. It will be done. The upper guide member 4 is integrally attached to the side surface of the upper side portion 21 of the lower shoe, and its outer surface is formed into a convex curved surface 4A such as a cylindrical surface. It is brought into sliding contact with a sliding contact plate 41 attached to the inner wall surface 121 of No. 12 by welding or fixing. Therefore, the upper guide member 4 supports the load acting on the upper structure G in the direction perpendicular to the bridge axis, and does not resist the forces (vertical force and force in the bridge axis direction) acting in the vertical plane ( (i.e., cutting off the transmission of force), the upper shoe 1 follows the movement of the upper structure G.
This serves to guide the upper shoe 1 and the lower shoe 2 and maintain the relative positional relationship in the direction perpendicular to the bridge axis. Note that the sliding plate 41 can be omitted if the inner wall surface of the leg wall plate of the upper shoe 1 is sufficiently smooth and hard.

The lower guide member 5 is interposed between the lower part of the inner wall surface (that is, the vertical surface part) of the leg wall plate 12 of the upper shoe 1 and both sides of the bottom plate 23 of the lower shoe 2 with respect to the direction perpendicular to the bridge axis. provided. The mounting structure and function of the lower guide member 5 are similar to those of the upper guide member 4 described above.

Other embodiments of the present invention are shown in FIGS. 6 and 7. In this embodiment, a lower shoe support member 6 and a horizontal force stop 8 are added, and the position of the support S can be adjusted in the vertical direction. Note that members having the same functions as those in the previous embodiment are given the same reference numerals.

That is, the lower shoe support member 6 includes a support plate 61, an adjustment plate 62, and a seat plate 63, and a base plate 7.
It supports the lower shoe 2 on top and also functions to adjust the height of the main support S. The upper surface of the support plate 61 is formed into a convexly curved surface 61A, and the support plate 61 linearly supports the lower surface of the bottom plate 23 of the lower shoe 2 at its apex in the bridge axis direction. In addition, the adjustment plate 62 can be adjusted to support the support S by appropriately changing its thickness or by stacking an appropriate number of plates.
Adjust the height (or tilt) of the Furthermore, bolt through holes 611 and 6 are provided in the support plate 61 and the seat plate 63.
31, and a split groove 621 is bored in the adjustment plate 62, and the anchor bolt 2B is inserted through these bolt through holes and the split groove.

The horizontal force stopper 8 is interposed between the bottom plate 23 of the lower shoe 2 and the base plate 7, and prevents the lower shoe 2 from moving in the horizontal direction due to horizontal force. The horizontal force stopper 8 includes a pin 81 fixed to the base plate 7, a prismatic block 82 into which the pin 81 is fitted from above, a plate 83 attached to the inner surface of the hole 23B of the bottom plate 23 of the lower shoe 2, and the block 82 which fits the pin 81 from above. It consists of a pair of wedge plates 84 interposed between the block 82 and the plate 83 to integrally fix each member.

Note that the base plate 7 can be omitted if the upper surface of the lower structure G is sufficiently hard and smooth. In this case, the pin 81 of the horizontal force stop 8 is embedded directly in the substructure G.

Still other embodiments of the present invention are shown in FIGS. 8 and 9. In this embodiment, a sheath pipe 94 is added, and the position of the support S can be adjusted in the vertical and horizontal directions.

That is, on the lower surface of the base plate 7, there is an anchor frame 93 embedded in the lower structure B, and a square tube whose one end is fixed to the anchor frame 93 and the other end is fixed to a fixing hole 71 drilled in the base plate 7. A shaped or cylindrical sheath tube 94 is arranged. The anchor bolt 2B is placed inside the sheath tube 94, and its lower end is brought into contact with the anchor frame 93 via the backing plate 95, and the space inside the sheath tube 94 is
It is inserted and arranged so that it can move within the range of 4a.

The bearing pressure member 3 may take other forms in addition to the embodiments described above. That is, as shown in FIG. 10, one surface is a convex curved surface 31'.
Then, the convex curved surface 31' of the bearing pressure member 3' whose other surface is formed as a flat surface 32' is brought into sliding contact with the receiving seat H having a concave curved surface 33' fixed to the upper surface 211 of the lower shoe 2, and the flat surface 32' is brought into sliding contact with the lower surface 34' of a sliding plate I fixed to the ceiling surface 111 of the upper shoe 1. 35' is a movement regulating member provided as appropriate. According to this aspect, displacement such as expansion and contraction of the girder member G is caused by sliding contact between the sliding plate I and the plane 32';
Displacement such as inclination is released by sliding contact between the concave curved surface 33' and the convex curved surface 31'. With this configuration, the convex curved surface 3 of the bearing pressure member 3'
1' and the concave curved surface 33' of the catch seat H (and eventually the lower shoe),
Also, the flat surface 32' of the bearing pressure member 3' and the sliding plate I
(and in turn, the top surface 34' of the upper shoe), the bearing pressure area increases, and the ability of the girder member G to support the load in the vertical direction increases.In other words, if the load is constant, it can be supported. This has effects such as being able to downsize the pressure member.

As shown in FIG. 11, the bearing pressure member 3'' is integrally layered with a rubber elastic body J and a sliding material K arranged on one surface of the rubber elastic body J by vulcanization adhesion or the like.
and a sliding plate L that is in sliding contact with the sliding material K, the sliding plate L is fixed to the ceiling surface 111 of the upper shoe 1, and the rubber elastic body J overlapping the sliding material K is connected to the sliding material K. the lower shoe 2 so that it comes into sliding contact with the sliding plate L.
The one arranged on the upper surface 211 of. According to this aspect, displacement such as expansion and contraction of the girder member G is caused by the sliding contact between the sliding plate L and the sliding member K, and displacement such as inclination is relieved by the deformation of the rubber elastic body J. With this configuration, the sliding plate L of the bearing member 3'' and the sliding member K come into surface contact, so that the bearing force increases, and the vibrations of the girder member G are absorbed by the rubber elastic body J. It has the effect that it can.

In the above embodiment, the concave curved surface 33' is directly attached to the upper surface 211 of the lower shoe without using the receiving seat H.
Moreover, the sliding plates I and L can be omitted if the surfaces to which they are attached are smooth and hard.

Furthermore, in addition to the above-mentioned embodiment, there is also an embodiment in which the bearing pressure member is constituted by a roller, and the expansion/contraction and inclination of the girder member are relieved by the roller. This embodiment is suitable as a movable end when the span of the girder member is large.

Furthermore, the following aspects can be adopted for the guide members 4 and 5 as well. That is, as shown in FIG. 12, the guide members 4',
5', and the sliding surface N of the sliding material M is the sliding plate 4.
1,51 in sliding contact. In this embodiment, it is necessary that the sliding surface N of the sliding material M be accurately arranged in the vertical direction.

The configuration of the present invention is not limited to the above embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, contrary to the above-mentioned embodiments, the bearing pressure member 3 is attached to the ceiling surface 111 of the upper shoe 1.
be attached to. Therefore, the sliding contact plate 31 is attached to the lower shoe 2.
be installed on the top surface of the Similarly to the guide members 4 and 5, the attachments to the upper and lower shoes are reversed. Although the guide members 4 and 5 are in sliding contact in each embodiment, they should be in rolling contact using rollers or the like. Change the lower shoe to one with a hollow part 2A to make it a solid lower shoe. In this case, horizontal force stops are installed on both sides of the lower shoe in the bridge axis direction. In the embodiment described above, the support member 6 is provided with a through hole and the anchor bolt 2B is inserted into the through hole, but the support member and the anchor bolt are not limited to this configuration, and the anchor bolt can be inserted from the support member. It is also possible to provide it independently, and therefore, in this case, a through hole in the support member is not required.

[Brief explanation of drawings]

The drawings show an embodiment of the support for a monorail girder, etc. of the present invention, and FIG. 1 is an explanatory diagram of the arrangement and operation of the monorail girder support, and FIGS. 2 to 5 show an embodiment of the present invention. Fig. 2 is a partially sectional perspective view of the bridge, Fig. 3 is a partially longitudinal side view of the bridge as viewed from the direction of the bridge axis, Fig. 4 is a partially longitudinal side view of the bridge as seen from the direction perpendicular to the bridge axis, and Fig. 5 is a partially longitudinal side view of the bridge. Detailed view of bearing pressure member, No. 6
The figure is a partial cross-sectional perspective view of another embodiment, FIG. 7 is a partial vertical side view of the bridge as seen from the axis direction, FIG. 8 is a partial cross-sectional perspective view of still another embodiment, and FIG. 9 is the same. Partial longitudinal side view seen from the bridge axis direction, Figures 10 and 1
1 is a diagram showing another embodiment of the bearing pressure member, and FIG. 12 is a diagram showing another embodiment of the guide member. G...Girder member, B...Substructure, S...Support,
1... Upper shoe, 11... Ceiling board, 111... Ceiling surface, 12... Leg wall board, 121... Inner wall surface, 1A...
...Concave groove, 2...Lower shoe, 2B...Anchor bolt,
21... Upper side part, 211... Upper surface, 22... Oblique side plate, 23... Bottom plate, 3... Bearing pressure member, 4... Upper guide member, 5... Lower guide member.

Claims (1)

[Claims] 1. Consists of an upper shoe 1 fixed to the lower surface of the girder member G, and a lower shoe 2 fixed to the upper surface of the lower structure B with fixing means fixed to the lower structure B, On the lower surface of the upper shoe 1, there are a ceiling surface 111 and an inner wall surface 121, which are opened in the shape of legs facing each other in the direction perpendicular to the bridge axis.
A concave groove 1A is formed in the bridge axis direction, and the lower shoe 2 has a shape that matches and fits into the concave groove 1A of the upper shoe, and its upper surface 211 is connected to the ceiling surface of the upper shoe, Further, the outer surface in the direction perpendicular to the bridge axis is arranged at a constant distance from the inner wall surface of the upper shoe, and the ceiling surface 111 of the upper shoe 1 and the upper surface 21 of the lower shoe 2 are arranged.
A bearing member 3 is disposed between the upper shoe and the inner wall surface 12 of the upper shoe in the direction perpendicular to the bridge axis.
between the upper part of 1 and the upper part of the outer surface of the lower shoe, and
An upper guide member 4 and a lower guide member 5, which cut off the transmission of vertical force, are arranged between the lower part of the inner wall surface 121 of the upper shoe and the lower part of the outer surface of the lower shoe, respectively. Support S for monorail girders, etc. 2. The support for a monorail girder or the like according to claim 1, wherein the upper shoe 1 has a reinforcing frame 13 on the side surface in the bridge axis direction. 3. The lower shoe 2 is provided with a lifting prevention member 25 on the side surface in the bridge axis direction, and the lifting prevention member 25 and the reinforcing frame 13 are engaged with each other to support a monorail girder or the like according to claim 2. . 4 Claims 1 to 3, in which a movement regulating member 33 for regulating the movement of the upper shoe 1 in the bridge axis direction is arranged between the upper shoe 1 and the lower shoe 2 and is fixed to the upper shoe or the lower shoe. Supports for monorail girders, etc. described in any of the paragraphs. 5. The support for a monorail girder, etc. according to any one of paragraphs 1 to 4, wherein the fixing means fixed to the lower structure B is an anchor bolt 2B. 6 The fixing means fixed to the lower structure B is the lower shoe 2.
A lower shoe support member 6 that supports the lower shoe support member 6 at both ends of the lower surface in the direction perpendicular to the bridge axis, an anchor bolt 2B that penetrates the lower shoe support member 6 and is fixed to the lower structure B, and the lower shoe support member 6
A support for a monorail girder according to any one of items 1 to 4, comprising a horizontal force stop 8 for preventing horizontal movement of the lower shoe 2 fixed to the support.