JP2015218454A - Bridge seat member fitting structure for bridge lower structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide structure capable of easily and reliably attaching a reinforcement member to a metallic or steel material lower structure.SOLUTION: A bridge seat member is formed of plural vertical beams 3a extending in a bridge axial direction and plural transverse beams 3b extending perpendicularly to a bridge axis in combination. Plural adhesive agent filling concaves 15 with a bottom, the depth of which is arranged to be within a range of plate thickness of plates constituting each surface are formed on at least either one of the adherend surface of the lower structure and the lower face of an adhesive plate 31 of the bridge seat member 3. The bridge seat member 3 is fixed to the lower structure by an adhesive agent 5 filled between the adhesive plate 31 and the top plate 11 and in the adherend surface side concave 15.

Description

  The present invention relates to a bridge member of a substructure in a bridge, which is a technique used when newly installing a support restraint structure, a lateral displacement restraint structure, a fallen bridge prevention structure, etc. in a substructure such as a pier or an abutment in a bridge. It relates to the mounting structure.

  As a seismic reinforcement work for the bridge, there is a work to reinforce the bridge girder support bridge fixed between the pier and the bridge girder in the horizontal and vertical directions.

  For example, in the method of exchanging bridges in a bridge shown in Patent Document 1, after removing existing bridges fixed on the upper surface of the pier, a base member such as a base plate is fixed on the upper surface of the pier, and seismic reinforcement is performed on the base plate. A new bag is fixed for use. In Patent Document 1, a stiffener is integrally formed at the end of a base plate, and the stiffener is fixed to a bridge girder side by an anchor bolt, whereby the base plate is fixed to a pier.

  Patent Document 2 discloses a technique for fixing a base plate to an upper surface (bridge seat surface) of a substructure such as a pier or an abutment in an existing bridge. In Patent Document 2, both ends of the base plate are extended outward from the bridge girder, and the extension is fixed to the pier or the like by an anchor bolt, whereby the base plate is fixed to the pier or the like.

  The above is an example of fixing a bridge member such as a base plate to a substructure such as a pier made of reinforced concrete. However, a steel pier or the like in which the top plate constituting the bridge surface is a steel plate. When fixing the base plate to the lower structure, for example, a method of fixing the base plate to a steel plate top plate of a pier by bolting is generally used.

JP 2004-124617 A Japanese Patent No. 3833659

  However, when fixing the base plate to the steel plate top plate of the pier by bolting, it requires many troublesome operations such as drilling bolt holes with bolts, bolting operations, etc. Since troublesome work on the back side of the top plate, such as welding and fixing to the back side of the plate, is necessary, there is a problem that fixing the base plate is difficult and construction is troublesome.

  Although a method of attaching the base plate to the top plate of the pier with an adhesive is also conceivable, there arises a problem that the base plate cannot be attached with sufficient strength.

  The present invention has been made in view of the above-described problems, and a bridge for a lower structure in a bridge that can easily and reliably attach a reinforcing bridge member to a metal lower structure such as a steel material. An object is to provide a member mounting structure.

  In order to achieve the above object, the gist of the present invention is as follows.

[1] A bridge member mounting structure for a lower structure in a bridge in which a reinforcing bridge member is attached to a lower structure having a bridge seat surface made of a metal top plate,
The bridge member is formed by combining a plurality of longitudinal beams extending in the bridge axis direction and arranged in parallel with a plurality of transverse beams extending in both sides orthogonal to the bridge axis and arranged in parallel. In addition, the portions corresponding to the top plate in the vertical beam and the horizontal beam are each constituted by an adhesive plate,
The bridge member is provided with a position restricting means for preventing displacement in the front-rear direction and the both-side direction with respect to the lower structure,
The depth is adjusted within the range of the thickness of the plate material constituting each surface on at least one of the adherend surface with the bridge member on the top plate upper surface and the lower surface of the adhesive plate. A bottomed adhesive filling recess is formed,
A lower structure in a bridge, wherein the bridge member is fixed to the lower structure by an adhesive filled between the adhesive plate and the adherend surface and in the concave portion on the adherend surface side Bridge member mounting structure.

  [2] The bridge member mounting structure of the lower structure in the bridge according to item 1, wherein an epoxy resin or an acrylic resin adhesive is used as the adhesive.

  [3] The item 1 above, wherein the position restricting means is constituted by a restraining tool that is fixed to both front and rear ends and left and right ends of the bridge member and that restrains the front and rear surfaces and both side surfaces of the lower structure from the outside. Or the bridge member attachment structure of the substructure in the bridge of 2.

  [4] Attaching the bridge member of the substructure in the bridge according to any one of items 1 to 3, wherein the adhesive filling recess is formed on both the lower surface of the adhesive plate and the attachment surface of the bridge pier. Construction.

[5] The adhesive filling recess is formed on the adherend surface,
Any one of the preceding items 1 to 4, wherein an insert member is provided on the lower surface of the adhesive plate in the bridge member so as to protrude downward, and the insert member is disposed in the adhesive filling concave portion on the adherend surface side. The bridge member mounting structure of the substructure in the bridge described in the item.

[6] The bridge seat surface of the lower structure is provided with an existing gutter for supporting the bridge girder,
6. A bridge member mounting structure for a substructure in a bridge according to any one of items 1 to 5, wherein the existing ridges are disposed in openings between the vertical beam and the horizontal beam in the bridge member.

  [7] At least one of the front end portion and the rear end portion of the bridge seat member is formed so as to extend in the front-rear direction with respect to the front-rear surface of the lower structure. The bridge seat member attachment structure of the lower structure in the bridge of any one of the preceding clauses 1-6 to which is attached.

  According to the bridge member mounting structure of the substructure in the bridge of the invention [1], the adhesive is filled also in the adhesive filling recess between the bridge pier and the bridge member, so that the adhesive is added in addition to the anchor effect. The bonding area of the bridge increases, and the bridge seat member can be securely attached to the pier. Furthermore, because the depth of the adhesive filling recess is adjusted within the range of the plate thickness, the work of drilling through holes in the pier top plate and the adhesive plate of the bridge seat member, the fastening operation of tightening bolts, There is no need for troublesome work such as welding and fixing a nut or a reinforcing plate to the back side of the top plate on the back side of the top plate, and construction can be easily performed.

  In the present invention, since there are openings between the vertical beams and the horizontal beams of the bridge member, the weight of the bridge member can be reduced, the handling can be easily performed, and the workability is further improved. Can be made.

  According to the bridge member mounting structure of the substructure in the bridge of the invention [2], the bridge member can be more securely attached to the pier.

  According to the bridge member mounting structure of the lower structure in the bridge of the invention [3], it is possible to prevent the displacement of the bridge member with respect to the pier more reliably.

  According to the bridge member mounting structure of the lower structure in the bridge of the invention [4] and [5], the bridge member can be more securely attached to the pier.

  According to the bridge member mounting structure of the lower structure in the bridge of the invention [6], it is not necessary to perform the work of removing the existing fence and the construction workability can be further improved.

  According to the bridge member mounting structure of the substructure in the bridge of the invention [7], for example, a seismic reinforcement device such as a bearing restraint device, a lateral displacement restraint device, and a falling bridge prevention device can be securely attached.

FIG. 1 is a side view schematically showing a bridge member mounting structure of a lower structure in a bridge according to an embodiment of the present invention. FIG. 2A is a plan view showing the pier in the bridge member mounting structure of the embodiment. FIG. 2B is a plan view showing a state where the bridge member is assembled in the pier in the embodiment. FIG. 2C is a plan view showing a state where a reinforcing device such as a bearing restraint device and a lateral displacement restraint device is attached to the pier in the embodiment. FIG. 3 is a perspective view for explaining a corner portion of the bridge member on the bridge pier in the bridge member mounting structure of the embodiment. FIG. 4 is a perspective view for explaining an upper front central portion of the bridge member on the pier in the bridge member mounting structure of the embodiment. FIG. 5A is a cross-sectional view showing a connecting portion between the bridge pier and the bridge seat member in the embodiment. FIG. 5B is an enlarged cross-sectional view of a main part of FIG. 5A. FIG. 6 is a perspective view for explaining a corner portion of a bridge seat member on a pier as a first modification of the present invention. FIG. 7 is a plan view showing a state where the bridge member is assembled in the pier which is the second modified example of the present invention. FIG. 8A is a cross-sectional view showing a connecting portion between a bridge pier and a bridge member as a second modification of the present invention. FIG. 8B is an enlarged cross-sectional view of the main part of FIG. 8A. FIG. 8C is an enlarged cross-sectional view showing a connecting portion between a bridge pier and a bridge member as a third modification of the present invention. FIG. 9A is a cross-sectional view showing a connecting portion between a bridge pier and a bridge seat member as a fourth modification of the present invention. FIG. 9B is a cross-sectional view showing a connecting portion between a bridge pier and a bridge seat member as a fifth modification of the present invention. FIG. 10 is a cross-sectional view showing a connecting portion of a pier with a bridge member as a sixth modification of the present invention.

  FIG. 1 is a side view schematically showing the vicinity of a pier of a bridge according to an embodiment to which the present invention is applied. As shown in the figure, this bridge has been subjected to seismic reinforcement work and applied with support restraint structure, lateral displacement restraint structure, and falling-bridge prevention structure. Bridge girder 2 is supported. Further, a bridge member (base member) 3 is attached on the pier 1, and a seismic reinforcement device 22 is attached via the bridge member 3. Furthermore, the bridge member 3 and the bridge girder 2 are connected via a falling bridge prevention device including a connecting member 25 and the like. In this state, the bridge girder 2 is supported on the pier 1 through the existing ridges 21 before the seismic reinforcement work is performed on this bridge. A seismic reinforcement device 22 such as a device and a lateral displacement restraint device, a falling bridge prevention device (seismic reinforcement device) 25, 26, and the like are attached.

  The bridge reinforcing structure of the present embodiment will be described in detail below. 2A is a plan view of the pier 1, FIGS. 2B and 2C are plan views showing the pier 1 with the bridge member 3 assembled, and FIGS. 3 and 4 are perspective views for explaining the bridge member 3. .

  In the following description, “front-rear direction” means a direction corresponding to the bridge axis direction, and “left-right direction”, “both directions”, “lateral direction”, and “width direction” mean the bridge axis direction in the horizontal plane. Means the direction orthogonal to

  Furthermore, in this embodiment, the upper structure is a structure formed by an upper work, such as a bridge girder, and the lower structure is a structure formed by a lower work, such as an abutment or an abutment.

  As shown in FIGS. 1-4, in this embodiment, the pier 1 as a lower structure is a product made from steel, and orthogonally crosses with the top plate 11 which comprises a bridge seat surface (upper end surface), and a bridge axis. Front and rear plates 12 and 12 constituting the front and rear surfaces, and both side plates 13 and 13 constituting the left and right side surfaces arranged in parallel with the bridge axis are provided, and these plates 11 to 13 are each made of a steel plate. . Furthermore, reinforcing members 17 such as steel frames are appropriately provided on the inner surfaces of these plates 11 to 13 as necessary.

  A plurality of existing eaves 21 are fixed on the bridge seat surface of the pier 1 at predetermined intervals in the left-right direction in two rows in the front-rear direction. Needless to say, the existing fence 21 was constructed at the time of bridge construction. The structure in which the ends of the bridge girders 2 and 2 on both the front and rear sides are respectively supported by the existing gutter 21 is in a state before the reinforcement work as described above.

  In the present embodiment, the configuration of the bridge girder 2 is not particularly limited, and can be suitably adopted even if it is a steel bridge girder or a reinforced concrete bridge girder such as PC (prestressed concrete). be able to.

  As shown in FIG. 1 to FIG. 4, the bridge member 3 used for the reinforcement work is formed in a lattice shape, a grid shape, or a cross beam shape in a plan view. That is, the bridge member 3 includes a plurality of steel vertical beams 3a arranged in parallel and parallel to each other in the horizontal plane in the horizontal plane, and orthogonal to the bridge axial direction in the horizontal plane and mutually. And a plurality of steel cross beams 3b arranged in parallel. The vertical beam 3a and the horizontal beam 3b are assembled so as to be orthogonal to each other and fixed by welding or the like. In the present embodiment, the vertical beams 3a and the horizontal beams 3b are arranged such that their upper end surfaces are in the same horizontal plane. In the present invention, the upper surface of the vertical beam 3a and the upper surface of the horizontal beam 3b are not necessarily arranged in the same horizontal plane, and may be provided with a step.

  Each vertical beam 3a and each horizontal beam 3b have a substantially groove-shaped or substantially U-shaped shape opened upward, and are made of a strip-shaped steel plate attached to the upper end surface (bridge seat surface) of the pier 1 A plate 31 and steel plate standing plates 32 and 32 fixed on the adhesive plate 31 by welding or the like and continuously arranged along both side edges of the adhesive plate 31 are provided.

  The front and rear ends of each vertical beam 3a protrude forward and rearward from the front and rear edges of the upper end surface (bridge seat surface) of the pier 1 and are arranged outside the front and rear direction on the upper end surface of the pier 1. Has been. Furthermore, the left and right end portions of each horizontal beam 3 b protrude sideward from both side edges of the upper end surface of the pier 1, and are disposed on the outer side in the left and right direction on the upper end surface of the pier 1.

 In the present embodiment, both end portions of the vertical beam 3a and the horizontal beam 3b are configured as extensions.

  Steel fixtures 4a and 4b are fixed to the lower surfaces of both ends of the vertical beam 3a and the horizontal beam 3b so as to protrude downward.

  Each restraint 4a, 4b includes a steel plate connection plate 41 disposed along the front and rear surfaces and both side surfaces of the pier 1 and steel plate standing plates 42, 42 disposed on both sides of the outer surface of the connection plate 41. And each. The connection plate 41 is fixed to the lower surfaces of both ends of the horizontal beam 3a and the vertical beam 3b by welding or the like, and the standing plate 42 is formed between the outer surface of the connection plate 41 and the lower surfaces of both ends of the vertical beam 3a and the horizontal beam 3b. Each side is fixed by welding or the like.

  In addition, in this embodiment, as shown in FIG. 3, although each connection plate 41 and 41 of the restraint tools 4a and 4b arrange | positioned corresponding to the corner part of the pier 1 is each formed separately, only it Without being limited thereto, as shown in FIG. 6, the connection plates 41 and 41 of the restraining tools 4 a and 4 b arranged corresponding to the corner portions of the pier 1 may be formed integrally.

  Moreover, in this embodiment, the position control means which prevents the position shift of the bridge member 3 with respect to the bridge pier 1 in the front-back direction is comprised by the restraining tools 4a and 4b.

  The bridge member 3 is formed with rectangular openings (lattice holes, grid holes) 30 penetrating in the vertical direction between the plurality of vertical beams 3a and between the plurality of horizontal beams 3b. Has been. In the opening 30, the vertical beam 3 a and the horizontal beam 3 b of the bridge seat member 3 are arranged on the upper end surface of the bridge pier 1 so that the existing ridge 21 is arranged. This prevents the existing ridge 21 from interfering with the bridge member 3.

  Further, in the present embodiment, in a state where the bridge member 3 is disposed on the upper end surface of the pier 1, a region covered by the vertical beam 3a and the horizontal beam 3b in the upper end surface of the pier 1 is configured as a deposition surface. .

  On the other hand, as shown in FIG. 2A, FIG. 5A and FIG. 5B, a bottomed adhesive filling hole corresponding to the vertical beam 3a and the horizontal beam 3b of the bridge member 3 is formed on the adherence surface of the top plate 11 of the pier 1. 15 are perforated in a staggered manner. Each adhesive filling hole 15 is formed by cutting a part of the upper surface (attachment surface) of the top plate 11 with a cutting tool such as a grinder. Further, the depth D of each adhesive filling hole 15 is set within the range of the thickness (plate thickness) T of the top plate 11 constituting the upper surface (bridge seat surface) of the pier 1. Does not penetrate the top plate 11.

  In addition, on the side surfaces of the bridge pier 1 (the surfaces of the front and rear plates 12 and the surfaces of the side plates 13), the same bottomed adhesive filling holes (as shown) corresponding to the restraining tools 4a and 4b of the bridge member 3 are illustrated. (Omitted) are perforated in zigzag form.

  Here, in this embodiment, the adhesive filling recess 15 is configured by the adhesive filling hole 15.

  And in this embodiment, while the adhesive agent 5 is inject | poured and filled between the adhesion board 31 of the vertical beam 3a and the horizontal beam 3b in the bridge member 3, and the adherence surface of the bridge pier 1, the bridge member 3 The adhesive 5 is also injected and filled between the connection plates 41 of the restraining tools 4a and 4b and the front and rear surfaces and both side surfaces of the pier 1. The adhesive 5 thus filled is filled into the adhesive filling hole 15 on the surface of the bridge pier 1 and also filled into the adhesive filling hole (not shown) provided on the side surface of the pier 1. The

  When the adhesive 5 filled in each gap is cured, the bridge seat member 3 is firmly fixed to the upper portion of the bridge pier 1 via the adhesive 5.

  Here, in the present embodiment, an epoxy resin or an acrylic resin adhesive is used as the adhesive 5. By using this type of adhesive 5, the gap between the bridge member 3 and the pier 1 and the adhesive filling hole 25 can be reliably filled by the injection method, and the bridge member 3 is attached to the pier 1. It can be securely bonded and fixed.

  In this embodiment, in a state where the bridge member 3 is fixed to the pier 1, the restraining tools 4a and 4b of the bridge member 3 are firmly fixed to the front and rear side surfaces and the left and right side surfaces of the bridge pier 1, respectively. Even if a strong stress is applied to the seat member 3 in the front / rear / left / right / up / down direction, the position of the bridge member 3 in the front / rear / left / right / up / down direction (horizontal and vertical directions) is surely shifted relative to the bridge seat surface of the pier 1. It is to be prevented.

  On the other hand, as shown in FIGS. 1 and 2C, in this embodiment, seismic reinforcement devices 22 such as a bearing restraint device and a lateral displacement restraint device are attached to both the front and rear sides of the existing rod 21 on the upper surface side of the bridge member 3. It is done. That is, as shown in FIG. 2C, FIG. 3 and FIG. The base plate 23 is fixed, and the seismic reinforcement device 22 is fixed on the base plate 23. The upper side of the seismic reinforcement device 22 is fixed to the lower surface of the bridge girder 2 via a receiving plate (not shown) such as a steel plate bracket. Direction) stress is supported. As a result, in this embodiment, a bearing restraint structure and a lateral displacement restraint structure are formed.

  As shown in FIG. 1, between the bridge pier 1 and the bridge girder 2, a falling bridge prevention device (seismic reinforcement device) including a bracket 26 and a connecting member 25 is provided. That is, the bracket 26 is fixed in the vicinity of the pier 1 at the lower part of the bridge girder 2. On the other hand, in the present embodiment, any of the restraining tools 4a arranged before and after the bridge member 3 also functions as a bracket, and the restraining tool 4a and the bracket 26 on the bridge girder 1 side include a chain, a cable, a rope, By being connected by a connecting member 25 such as a bar, a falling bridge prevention structure and the like are formed.

  In this invention, although the construction procedure at the time of assembling the bridge seat member 3 with respect to the pier 1 before reinforcement construction is not limited, For example, it constructs in the following procedures.

  First, the adhesive filling hole 15 is drilled in the bridge seat surface of the pier 1. Subsequently, the bridge member 3 in a disassembled state, that is, the vertically separated beam 3a, the transverse beam 3b, and the restraining tools 4a and 4b are individually installed on the upper end of the bridge pier 1 while these members 3a, 3b, and 4a are installed. , 4b are appropriately connected and fixed to assemble the bridge member 3 at a predetermined position of the pier 1. Needless to say, in this case, the vertical beam 3 a and the horizontal beam 3 b are inserted and arranged at positions avoiding the existing rod 21 so that the existing beam 21 is arranged in the appropriate opening 30 of the bridge member 3. Then, the bridge member 3 is assembled.

  Thereafter, the adhesive 5 is injected and filled between the pier 1 and the pier member 3, and the pier member 3 is bonded and fixed to the pier 1.

  Subsequently, the seat plate 23 (see FIGS. 3 and 4) is fixed to a required region on the bridge seat member 3, and the reinforcing device 22 is fixed between the seat plate 23 and the bridge girder 2 (see FIG. 2C). Thereafter, the bracket 26 fixed to the bridge girder 1 and the restraint (bracket) 4a of the bridge seat member 3 are connected by the connecting member 25 as necessary. Thereby, the bearing restraint structure, the lateral displacement restraint structure, and the falling bridge prevention structure in the present embodiment are formed.

  As described above, according to the bridge member mounting structure of the lower structure of the present embodiment, the adhesive 5 is also filled into the adhesive filling hole 15 of the pier 1, so that the adhesive 5 is added in addition to the anchor effect. The adhesion area of the bridge pier 1 to the pier 1 is also increased, and the attachment strength of the bridge member 3 to the pier 1 can be sufficiently secured.

  Moreover, in this embodiment, since the depth D of the adhesive filling hole 15 formed in the top plate 11 is set within the range of the thickness T of the top plate 11, a through hole is drilled in the top plate 11. There is no need for troublesome work such as work and bolt fastening to tighten bolts, and no need for troublesome work on the back side of the top plate such as welding and fixing nuts and reinforcing plates to the back side of the top plate 11 Workability can be improved.

  In the present embodiment, the bridge member 3 fixed on the pier 1 is formed in a lattice shape, a grid shape, or a cross beam shape in which the vertical beam 3a and the horizontal beam 3b are incorporated in the front, rear, left, and right. The existing ridge 21 can be disposed in the opening 30 of the bridge member 3, and there is no need to remove the existing ridge 21. For this reason, troublesome work such as removal work of the existing cage 21 is not required, work efficiency can be improved, and the existing cage 21 can be continuously used as a structural material.

  Furthermore, since the bridge member 3 of the present embodiment has a plurality of openings 30, the weight can be reduced by the presence of the openings 30. Therefore, handling of the bridge member 3 is facilitated, construction workability can be further improved, and the burden on the pier 1 due to the construction of the bridge member 3 can be reduced.

  In addition, the bridge member 3 of the present embodiment can accurately confirm the state of the existing ridge 21 and the bridge seat surface through the opening 30 due to the presence of the opening 30. Maintenance work such as maintenance and inspection can be performed easily and accurately.

  Moreover, in this embodiment, since the bolt is not used in order to fix the bridge member 3 to the pier 1, the bridge member 3 can be easily removed when the bridge member 3 is replaced, and the pier 1 Side damage can also be reduced. In other words, the bridge member 3 is removed in a state where the bridge member 3 is fixed to the bridge pier 1 by a bolt (through bolt) penetrating the adhesive plate 31 of the bridge member 3 and the top plate 11 of the pier 1. In some cases, it is difficult to remove the through bolts, which requires a lot of labor, and the removal work becomes difficult. In addition, since a large number of bolt holes (through holes) exist on the side of the pier 1 after the bolt is removed, the pier 1 is greatly damaged.

  On the other hand, in this embodiment, since it fixes with the adhesive agent 5 without using a penetration bolt, the bridge seat member 3 can be easily removed from the pier 1 only by tearing at the part of the adhesive agent 5. it can. Further, the bridge pier 1 side is hardly damaged only by the bottomed shallow adhesive filling hole 15 remaining. Moreover, since the adhesive 5 remains in the adhesive filling hole 15 of the pier 1 after the bridge member is removed, the strength of the pier 1 is sufficiently maintained by the filling reinforcement effect of the adhesive 5. Even if the bridge member 3 is removed in this manner, damage to the pier 1 can be suppressed to a minimum, and therefore, re-installation of the new bridge member 3 can be easily and reliably performed.

  However, in the present invention, the structure in which the metal reinforcing member is inserted and disposed in the adhesive filling hole 15 of the pier 1 is not excluded.

  For example, as shown in FIG. 7, FIG. 8A and FIG. 8B, in the bridge member mounting structure as this modified example, the adhesive plates 31 and 31 of the vertical beam 3a and the horizontal beam 3b in the bridge member 3 are connected to the pier 1 side. Corresponding to each adhesive filling hole 15, threaded holes 34 are formed in a staggered manner. Further, insert bolts 35 as metal reinforcing members are respectively screwed into the respective threaded holes 34 of the vertical beam 3 a and the horizontal beam 3 b from the outside, and the insertion side shaft portions of the respective insert bolts 35 are inserted into the respective adhesive filling holes 15. Has been placed. The adhesive 5 is filled in the gap between the insertion side shaft portion of the insert bolt 35 and the inner peripheral surface of the adhesive filling hole 15.

  In this bridge member mounting structure, since the insert bolt 35 is fixed so as to protrude from the lower surface of the bridge member 3, the adhesive 5 is arranged in a complicated state, and the bridge pier 1 of the bridge member 3 is arranged. The attachment strength (adhesive strength) with respect to can be further improved.

  Moreover, when fixing insert members (metal reinforcement members), such as the insert bolt 35, to the adhesive plate 31 of the bridge member 3, the fixing method is not particularly limited. For example, a rod-shaped insert member (insert pin) is fixed to the adhesive plate 31 by welding or the like, or a nut member is fixed to the adhesive plate 31 by welding or the like, and an insert bolt (insert member) is screwed into the nut member and fixed. You may make it do.

  You may make it comprise a non-cutting part (remaining part) as a projecting insert member by cutting a part of inner surface of the adhesive plate made from a steel plate with cutting tools, such as a grinder.

  Moreover, in the said embodiment, although insert members, such as insert bolt 35, are being fixed to the adhesive board 31 of the vertical beam 3a and the horizontal beam 3b in the bridge member 3, it is not restricted only to it, In this invention, a bridge member 3, the insert member may be fixed to the connection plate 41 of the restraining tools 4a and 4b in an inward projecting manner. In this case, an adhesive filling concave portion is formed on the outer peripheral side surface of the pier 1 corresponding to the insert member of the connection plate 41, and the tip end portion of the insert member may be disposed in the concave portion.

  In the present invention, when the insert bolt 35 as described above is used, the insert bolt 35 may be screwed into the top plate 11 of the pier 1. That is, as shown in FIG. 8C, a female screw may be engraved on the inner peripheral side surface of the adhesive filling hole 15 formed in the top plate 11, and the male screw of the insert bolt 35 may be screwed into the female screw and fixed. . In this case, the adhesive 5 is also filled in the gap between the male screw of the insert bolt 35 and the female screw of the adhesive filling hole 15. In this configuration, the screwing by the male screw of the insert bolt 35 and the female screw of the adhesive filling hole 15 is auxiliary, and the top plate 11 of the pier 1 and the bridge member 3 are mainly fixed by the adhesive 5. It is planned by.

  Moreover, in the said embodiment, although the adhesive filling hole 25 as the adhesive filling recessed part formed in the top plate 11 of the pier 1 is formed in zigzag arrangement, the arrangement | sequence shape of the adhesive filling hole 25 is especially limited. However, it may be formed in any arrangement. Further, in the above-described embodiment, the adhesive filling holes 25 are formed to be scattered individually. However, the present invention is not limited to this, and in the present invention, the adhesive filling concave portions may be formed in a continuous groove shape. good. For example, a groove-like adhesive-filled concave portion that is continuous along the length direction of the vertical beam 3a or the horizontal beam 3b, the direction intersecting the length direction, or the like may be formed on the adherend surface of the top plate 11. good.

  Further, in the present invention, the cross-sectional shape of the adhesive-filled concave portion is not particularly limited. For example, the adhesive-filled concave portion 16 is formed in a semicircular cross-section, or the adhesive-filled concave portion 26 is formed in a triangular shape (mountain shape). (Shape).

  Further, when the adhesive filling recess 16 is formed in a continuous groove shape, the insert member may be formed in a continuous protrusion shape (projection) in accordance with the groove shape.

  Moreover, in the said embodiment, although the adhesive agent filling recessed part 16 is formed only in the top plate 11 side among the top plate 11 of the pier 1 and the adhesive plate 31 of the bridge seat member 3, in this invention, it is a bridge. An adhesive filling recess may be formed on the inner side surface (lower surface) of the adhesive plate 31 in the seat member 3. For example, as shown in FIGS. 9A and 9B, the lower surface side of the adhesive plate 31 is cut with a cutting tool such as a grinder so that the depth is adjusted within the range of the thickness of the adhesive plate 31 on the lower surface of the adhesive plate 31. The formed adhesive filling recess 36 may be formed. Further, when the adhesive plate side concave portion 36 is formed on the inner surface of the adhesive plate 31, the adhesive plate side concave portion 36 may be formed so as to be continuous in the longitudinal direction of the vertical beam 3a or the horizontal beam 3b. You may form in.

  Further, in the present invention, the adhesive filling recess may be formed only on the lower surface side of the adhesive plate 31 of the bridge member 3 without forming the adhesive filling recess on the adherend surface of the pier 1. . In short, if a bottomed adhesive-filled concave portion whose depth is adjusted within the range of the plate thickness is formed on at least one of the adherend surface of the pier 1 and the lower surface of the adhesive plate, good.

  Further, in the present invention, as shown in FIG. 10, by fixing a member such as a plate material to at least one of the lower surface of the adhesive plate 31 and the adherend surface of the pier 1 by welding or the like, the lower surface side of the adhesive plate or the pier Convex portions 6 may be formed on the adherend surface to increase the adhesion area of the lower surface of the adhesive plate or the pier adherent surface.

  Moreover, in the said embodiment, although the thing made from a steel plate is used as the adhesive plate 31, it is not restricted only to it, In this invention, the raw material of an adhesive plate is not limited. For example, in the present invention, the adhesive plate 31 may be made of fiber reinforced plastic (FRP) such as carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GRRP, GMT).

  In the above embodiment, the pier is described as an example of the substructure of the present invention. However, the present invention is not limited to this, and the present invention can be applied to a substructure other than the pier, such as an abutment. it can.

  Moreover, in the said embodiment, although the existing ridge 21 remains in the pier 1, it is not restricted to it, In the present invention, you may make it remove the existing ridge 21 as needed.

  In the above embodiment, the vertical beam 3a and the horizontal beam 3b constituting the bridge member 3 are formed in a substantially groove shape or a substantially U-shaped shape. However, the present invention is not limited to this, and in the present invention, the beams 3a, 3b The shape of is not particularly limited. For example, the beams 3a and 3b may be mountain-shaped, or the vertical beam 3a and the horizontal beam 3b may be formed in different shapes.

  Moreover, in the said embodiment, although restraint tool 4a, 4b as a position control means is attached to the edge part of the vertical beam 3a and the horizontal beam 3b in the bridge member 3, it is not restricted only to it, In this invention, it is a position. The attachment position of the restricting means is not particularly limited.

  The bridge member mounting structure for a lower structure in a bridge according to the present invention can be employed when a reinforcing bridge member is mounted on a lower structure such as a pier or an abutment.

1: Pier (substructure)
11: Top plate 15: Adhesive filling hole 16: Adhesive filling concavity 2: Bridge girder 21: Existing gutter 22: New gutter 3: Bridge seat member 30: Opening 3a: Vertical beam 3b: Cross beam 31: Adhesive plate 35 : Insert bolt (insert member)
36: Adhesive filling recesses 4a, 4b: Restraint 5: Adhesive D: Anchor hole depth T: Plate thickness

Claims (7)

A bridge member mounting structure of a lower structure in a bridge in which a reinforcing bridge member is attached to a lower structure having a bridge seat surface made of a metal top plate,
The bridge member is formed by combining a plurality of longitudinal beams extending in the bridge axis direction and arranged in parallel with a plurality of transverse beams extending in both sides orthogonal to the bridge axis and arranged in parallel. In addition, the portions corresponding to the top plate in the vertical beam and the horizontal beam are each constituted by an adhesive plate,
The bridge member is provided with a position restricting means for preventing displacement in the front-rear direction and the both-side direction with respect to the lower structure,
The depth is adjusted within the range of the thickness of the plate material constituting each surface on at least one of the adherend surface with the bridge member on the top plate upper surface and the lower surface of the adhesive plate. A bottomed adhesive filling recess is formed,
A lower structure in a bridge, wherein the bridge member is fixed to the lower structure by an adhesive filled between the adhesive plate and the adherend surface and in the concave portion on the adherend surface side Bridge member mounting structure.   The bridge member mounting structure for a substructure in a bridge according to claim 1, wherein an epoxy resin or an acrylic resin adhesive is used as the adhesive.   The said position control means is comprised by the restraint tool which is fixed to the front-and-rear both ends and right-and-left both ends of the said bridge member, and suppresses the front-and-back surface and both sides | surfaces of the said lower structure from the outside. The bridge member mounting structure of the substructure in the bridge described in 1.   The bridge member mounting structure for a substructure in a bridge according to any one of claims 1 to 3, wherein the adhesive filling recess is formed on both the lower surface of the adhesive plate and the attachment surface of the bridge pier. The adhesive filling recess is formed on the adherend surface,
The insert member is provided on the lower surface of the adhesive plate in the bridge seat member so as to protrude downward, and the insert member is disposed in the adhesive filling concave portion on the adherend surface side. A bridge member mounting structure for a substructure in the bridge according to item 1. On the bridge seat surface of the lower structure, an existing ridge for supporting the bridge girder is provided,
The bridge member mounting structure for a substructure in a bridge according to any one of claims 1 to 5, wherein the existing eaves are arranged in an opening between each of the vertical beam and the horizontal beam in the bridge member. . At least one of the front end portion and the rear end portion of the bridge seat member is formed to extend in the front-rear direction with respect to the front-rear surface of the lower structure, and an earthquake-proof reinforcement device is attached to the extension portion. A bridge seat member mounting structure for a substructure in a bridge according to any one of claims 1 to 6.

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