JP2007039992A - Bridge girder movement inhibiting device, and method of producing bridge girder movement inhibiting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bridge girder movement inhibiting device which is low in cost and has sufficient earthquake resistance imparted thereto. <P>SOLUTION: The bridge girder movement inhibiting device is formed of a plurality of linear members 3 and a cylindrical member 4. The linear members 3 are arranged in a manner forming an almost circular or polygonal shape in plan and extending along the vertical direction, to thereby ensure a predetermined strength. The cylindrical member 4 is arranged along at least one of external and internal circumferences of an area A formed by the linear members 3, such that its peripheral surface follows a peripheral surface of the area A, and therefore the strength of the device is further increased, which achieves sufficient inhibition of the movement of a bridge girder in the horizontal direction in case of an earthquake or the like. Further the linear members 3 functioning as a damper absorb energy of the earthquake or the like. Herein, if upper and lower ends of the device 100 are embedded in structures, respectively, the device ensures a predetermined rigidity, while if at least one of the ends is not fixed to the structure but only inserted into the same, vertical expansion/contraction of the device 100 or horizontal expansion/contraction of the bridge girder is accommodated, and therefore breakage etc. , are prevented. In addition, employment of the linear members 3 as the component members brings about reduction of production costs etc. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bridge girder movement restriction device that is provided between a bridge girder and a support structure and restricts the movement of the bridge girder, and a manufacturing method of the bridge girder movement restriction device that produces this device.

  Conventionally, as shown in FIG. 12A, the bridge girder 90 is provided between the bridge girder 90 and supporting structures such as the abutments 81 and 82 and the piers 83 and 84 that support the bridge girder 90, and restricts the movement of the bridge girder 90. In addition, devices called bridge girder stoppers are known as devices 71, 72, 73, and 74 that prevent the bridge girder 90 from falling down by restricting this movement. For this bridge girder stopper, a steel bar stopper, a steel angle stopper, a damper type stopper, or the like is used depending on conditions, but a steel angle stopper is used for a medium-sized or larger bridge (for example, see Patent Document 1). .

In this gazette, as shown in FIG. 12B, for example, an embedded form 93 made of a steel plate or the like is installed on a pier 83, and after the concrete of the pier 83 is placed, the inside of the embedded form 93 is a box. Next, a steel corner stopper 95 formed by combining steel plates into a quadrangular prism shape is installed in the concave portion, and then the steel corner stopper 95 is embedded in the bridge girder 90. Describes a technique for constructing the bridge girder 90.
JP 2002-167711 A (page 1-6, FIG. 6)

  However, in the conventional steel angle stoppers described above, the current seismic design that takes into account the force that acts during a large-scale earthquake increases the shape, making the construction difficult, and producing the steel angle stopper. There was a problem that the cost and the construction cost of installation were high.

  The present invention has been made to solve such a problem, and it is easy to manufacture a bridge girder movement limiting device having low cost and sufficient seismic performance, and such a bridge girder movement limiting device. An object of the present invention is to provide a method for manufacturing a bridge girder movement restriction device.

  The bridge girder movement restriction device according to the present invention is provided between a bridge girder and a support structure that supports the bridge girder so as to restrict the movement of the bridge girder, and its lower end part enters or enters the upper end part of the support structure. A bridge girder movement restricting device that is embedded and fixed and the upper end of the bridge girder enters the lower end of the bridge girder or enters and is fixed embedded, and is arranged side by side so that the planar arrangement state is substantially circular or substantially polygonal. And a plurality of linear members arranged so that the longitudinal direction forms a vertical vertical direction, and at least one of the outer peripheral side and the inner peripheral side of the region formed by the plurality of linear members, the peripheral surface of the region And a tubular member disposed along the peripheral surface.

  According to such a bridge girder movement restricting device, a plurality of linear members arranged in parallel so that the planar arrangement state is substantially circular or substantially polygonal and the longitudinal direction is vertically vertical. Thus, a predetermined strength is ensured and the tubular member is disposed on at least one of the outer peripheral side and the inner peripheral side of the region formed by the plurality of linear members so that the peripheral surface is along the peripheral surface of the region As a result, the strength is further enhanced, so that the movement of the bridge girder in the horizontal direction due to an earthquake or the like is sufficiently limited. For example, rebars and other linear members that mainly constitute this bridge girder movement limiting device have high elongation capacity after yielding, so even if tensile force due to a large earthquake or the like acts on the linear members The hysteresis energy of the linear member can be used when the member is stretched and deformed, and a function as a damper that absorbs energy such as an earthquake can be achieved. In addition, when the lower end of the bridge girder movement restricting device enters the upper end of the support structure and is embedded and fixed, and the upper end of the bridge girder movement restricting device enters the lower end of the bridge girder and is embedded and fixed, Since the bridge girder movement restricting device is firmly fixed to the support structure and the bridge girder, a predetermined rigidity is ensured. If at least one of the lower end and the upper end of the bridge girder movement restriction device is not fixed only by entering the support structure or the bridge girder, the vertical direction of the bridge girder movement restriction device due to temperature change, etc. The expansion and contraction of the bridge girder is allowed without being constrained by the support structure or the bridge girder, and the horizontal extension of the bridge girder due to a temperature change or the like is permitted without being constrained by the bridge girder movement restriction device or the support structure. And shear failure and cracking of bridge girders are prevented. From the above, sufficient seismic performance is ensured. Moreover, since linear members, such as a reinforcing bar, are the main components of the bridge girder movement restriction device, manufacturing costs and construction costs are greatly reduced compared to conventional steel angle stoppers and the like. For this reason, the cost is low.

  Further, the manufacturing method of the bridge girder movement restriction device according to the present invention is provided between the bridge girder and the support structure supporting the bridge girder so as to restrict the movement of the bridge girder, and the lower end portion thereof enters the upper end portion of the support structure. Or a method of manufacturing a bridge girder movement restricting device in which the upper end of the bridge girder enters or is fixed to be embedded and fixed, and the plurality of linear members are arranged in a plane. At least one side of the outer peripheral side and the inner peripheral side of the region formed by a plurality of linear members arranged in parallel so that the state is substantially circular or substantially polygonal, and the longitudinal direction is vertically vertical In addition, since the tubular member is disposed so that the peripheral surface thereof is along the peripheral surface of the region, it is easy to manufacture the bridge girder movement restricting device having the above-described action.

  Here, it is preferable to include a winding member wound spirally along at least one of the outer peripheral side and the inner peripheral side of the region formed by the plurality of linear members, and the winding member is provided on the inner peripheral side. Is provided, the strength is further enhanced, and when the winding member is provided on the outer peripheral side, the strength is further enhanced and the buckling deformation of the linear member is prevented.

  After arranging the plurality of linear members, the bridge girder movement restricting device having such a configuration is spirally wound along at least one of the outer peripheral side and the inner peripheral side of the region formed by the plurality of linear members. If the winding member is disposed and manufactured, it is easy to manufacture the bridge girder movement restricting device having the above-described action.

  Moreover, when the filler filled inside the tubular member is provided, the strength is further enhanced, and the strength is further enhanced by increasing the strength of the filler.

  When the bridge girder movement restricting device having such a configuration is manufactured by filling the inside of the tubular member with the filler after the tubular member is disposed, it is easy to manufacture the bridge girder movement restricting device having the above-described action. The

  When the tubular member is disposed outside the linear member (the tubular member is not disposed inside the linear member) and the filler having self-hardness is filled inside the linear member, Alternatively, when the tubular member is disposed outside the winding member (no tubular member is disposed inside the winding member) and the self-hardening filler is filled inside the winding member. The tubular member also functions as a mold to prevent further leakage of the filler that leaks outward from the linear member or the winding member, and installation and removal of the mold are unnecessary. Is done. For this reason, workability is improved.

  Moreover, since the base of a linear member is suppressed when the cyclic | annular restraint member which bundles the lower end part of a some linear member is provided, the variation of the said linear member when a linear member is extended is prevented. .

  When the bridge girder movement restricting device having such a configuration is manufactured by setting an annular restraining member that binds the lower ends of the plurality of linear members after arranging the plurality of linear members, the above-described effect is obtained. Manufacturing of the bridge girder movement restriction device is facilitated.

  Further, when manufacturing such a bridge girder movement restriction device, before placing the plurality of linear members, set a gantry having recesses and place a plurality of lower ends of the plurality of linear members on the recesses. If the linear member is disposed and manufactured, it is easy to manufacture the bridge girder movement restricting device having the above-described action.

  Further, before arranging the plurality of linear members, an annular guide member that guides the peripheral surfaces of the plurality of linear members so that the planar arrangement state of the plurality of linear members forms a substantially circular shape or a substantially polygonal shape. If a plurality of linear members are arranged and manufactured while being guided by a guide member, manufacture of a bridge girder movement restricting device having the above-described action is facilitated.

  As described above, according to the present invention, there are provided a bridge girder movement restriction device that is low in cost and has sufficient seismic performance, and a method of manufacturing a bridge girder movement restriction device that facilitates the production of such a bridge girder movement restriction device. It becomes possible.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a bridge girder movement restriction device and a method for manufacturing a bridge girder movement restriction device according to the present invention will be described with reference to FIGS. Note that, in each drawing, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  1 to 5 show the first embodiment of the present invention, and FIGS. 6 to 11 show the second to sixth embodiments of the present invention, respectively. FIG. 1 shows the first embodiment of the present invention. FIG. 2 is a perspective view showing the bridge girder movement restricting device, FIG. 3 is a plan cross-sectional view of the bridge girder movement restricting device, and FIG. FIG. 5 is an explanatory diagram showing a linear member disposing process when manufacturing the bridge girder movement restricting device, and FIG. 5 is an explanatory diagram showing a frame setting process when manufacturing the bridge girder moving restricting device.

  As shown in FIG. 1, the bridge girder movement restriction device 100 is provided between the bridge girder 1 and the pier 2 as a support structure, and its lower end is fixed to the upper end of the pier 2. The upper end portion is fixed to the lower end portion of the bridge girder 1.

  As shown in FIGS. 2 and 3, the bridge girder movement restriction device 100 is configured to include a plurality of linear members 3 and a tubular member 4 that surrounds the linear members 3.

  The plurality of linear members 3 mainly constitute the bridge girder movement restriction device 100 and are arranged such that the longitudinal direction thereof is the vertical vertical direction. These linear members 3 are arranged side by side so that the planar arrangement state is substantially circular. Accordingly, the plurality of linear members 3 form a substantially cylindrical region A. And the number of this linear member 3 is set so that predetermined intensity | strength is ensured according to structures, such as the bridge girder 1 and the bridge pier 2. FIG.

  Here, the linear member 3 is particularly preferably a reinforcing bar, and for example, a round bar-shaped reinforcing bar (hot rolled bar), a deformed bar (hot rolled deformed bar), a high strength reinforcing bar, or the like is used. In place of the reinforcing bars, for example, a PC steel material such as a PC steel bar, a PC steel wire, a PC steel twisted wire, or the like can be used.

  The tubular member 4 is located on the outer peripheral side of a region A (hereinafter simply referred to as region A) formed by a plurality of linear members 3, and the inner peripheral surface thereof is disposed along the outer peripheral surface of the region A. It is a cylindrical tube.

  The tubular member 4 is particularly preferably a steel pipe here, but it is also possible to use a tubular member formed from, for example, a synthetic resin. In addition, in the location which the tubular member 4 and the linear member 3 contact or adjoin, you may make it join both by welding, adhesion | attachment, etc.

  Further, a filler 5 is filled inside the tubular member 4. As the filler 5, a material that is initially in a fluid form and has a self-hardening property that hardens over time is used. Concrete materials such as cement concrete, fiber reinforced concrete (FRC), concrete / polymer composites, and the like are used. For example, mortar materials such as cement mortar, fiber reinforced mortar (FRM), and mortar-polymer composites, and resin materials such as epoxy resin and acrylic resin can be used.

  An annular restraining member 6 is wound around the lower ends of the plurality of linear members 3. The restraining member 6 is a member that presses the base of the linear member 3 by bundling the lower ends of the plurality of linear members 3, and here, a plate bent in a cylindrical shape is used. It is also possible to bend and use steel bars such as reinforcing bars.

  The lower ends of the linear member 3 and the tubular member 4 that are the lower ends of the bridge girder movement restriction device 100 enter the upper ends of the bridge piers 2 and are embedded and fixed, and the lines that are the upper ends of the bridge girder movement restriction device 100 The upper end portions of the shaped member 3 and the tubular member 4 enter the lower end portion of the bridge girder 1 and are embedded and fixed. That is, the upper end portion and the lower end portion of the linear member 3 and the tubular member 4 are embedded and fixed in the concrete forming the bridge girder 1 and the pier 2.

  Next, a construction method (manufacturing method) of the bridge girder movement restriction device 100 having such a configuration will be described. First, in a state in which the concrete of the pier 2 is placed halfway, the gantry 7 is set at a predetermined position on the concrete as shown in FIG. The gantry 7 has an annular recess 7b between the rings by attaching an annular ring protruding upward in the figure to the vicinity of the inner periphery and the outer periphery of a disc having a circular through hole 7a in the center. Is provided.

  Next, the annular guide member 8 shown in FIG. 5 is set at a predetermined position above the gantry 7. In this case, a plurality of stays (not shown) such as rods are erected along the circumferential direction on an annular ring on the outer peripheral edge of the gantry 7 shown in FIG. 4, and a guide member 8 is provided at the upper end of the stay. set. Here, a short steel pipe is used as the guide member 8. Next, the lower ends of the plurality of linear members 3 are placed in the recesses 7b of the gantry 7, and the plurality of linear members 3 are guided by the guide member 8, and specifically, as shown in FIG. While the side surfaces of the shaped members 3 are in contact with the inner peripheral surface of the guide member 8, they are spaced apart from each other so that the planar arrangement state is substantially circular.

  Next, the restraining member 6 is set so that the lower ends of the plurality of linear members 3 are bundled, and then the tubular member 4 is disposed outside the plurality of linear members 3, and then the filler 5 is attached to the tubular member. Fill inside 4 This filler 5 is hardened | cured with progress of predetermined time. In FIG. 2, the gantry 7 and the guide member 8 are omitted in order to prevent the drawing from being complicated.

  After that, the concrete of the pier 2 is placed in a predetermined manner to form the pier 2. Thereby, the lower end portions of the linear member 3 and the tubular member 4 are embedded and fixed in the concrete forming the pier 2. Next, the bridge girder 1 is formed by placing concrete of the bridge girder 1 in a predetermined manner. Thereby, the upper end portions of the linear member 3 and the tubular member 4 are embedded and fixed in the concrete forming the bridge girder 1.

  Since it manufactures in this way, manufacture of the bridge girder movement restriction apparatus 100 is made easy.

  And according to the bridge girder movement restricting device 100 manufactured easily in this way, the following operations and effects are achieved.

  That is, a predetermined strength is ensured by the plurality of linear members 3 that are arranged side by side so that the planar arrangement state forms a substantially circular shape and the longitudinal direction forms the vertical vertical direction, and the region The strength is further enhanced by the tubular member 4 disposed on the outer peripheral side of A so that the inner peripheral surface thereof is along the outer peripheral surface of the region A. For this reason, the movement which the bridge girder 1 tries to move to the horizontal directions D1 and D2 (refer FIG. 1) by the earthquake etc. is fully restrict | limited. The linear member 3 such as a reinforcing bar, which mainly constitutes the bridge girder movement restriction device 100, has a high elongation ability after yielding, so that even when a tensile force due to a large earthquake or the like acts on the linear member 3 When the linear member 3 expands and deforms, the hysteresis energy of the linear member 3 can be used, and a function as a damper that absorbs energy such as an earthquake can be achieved. Moreover, since the lower end part of the bridge girder movement restriction device 100 enters the upper end portion of the pier 2 and is embedded and fixed, the upper end part of the bridge girder movement restriction device 100 enters the lower end part of the bridge girder 1 and is embedded and fixed. The bridge girder movement restriction device 100 is firmly fixed to the bridge girder 1 and the pier 2. For this reason, predetermined rigidity is ensured. From the above, sufficient seismic performance is secured. Further, since the linear member 3 such as a reinforcing bar is a main component of the bridge girder movement restriction device 100, the manufacturing cost and the construction cost are greatly reduced as compared with the conventional steel angle stopper and the like. For this reason, the cost is low.

  Moreover, since the filler 5 is filled inside the tubular member 4, the strength is further enhanced and the earthquake resistance is further improved. By increasing the strength of the filler 5, the strength is further enhanced and the seismic performance is further improved.

  Moreover, since the tubular member 4 disposed outside the linear member 3 also serves as a formwork for preventing leakage of the filler 5 leaking outside from the linear member 3 to the outside, Installation / removal of the formwork is unnecessary, and workability is improved.

  Moreover, since the lower end part of the some linear member 3 is bundled by the restraint member 6, and the root is pressed down, when the linear member 3 expands, the said linear member 3 is prevented from flaking, and seismic performance is improved. It is further improved.

  FIG. 6 is a cross-sectional configuration diagram showing a bridge girder movement restriction device according to a second embodiment of the present invention. The bridge girder movement restriction device 200 of the second embodiment is different from the bridge girder movement restriction device 100 of the first embodiment in that the tubular member 14 is disposed not on the outer peripheral side of the region A but on the inner peripheral side. The tubular member 14 is disposed such that the outer peripheral surface thereof is along the inner peripheral surface of the region A.

  Even if comprised in this way, the effect similar to 1st Embodiment can be acquired.

  FIG. 7 is a cross-sectional configuration diagram showing a bridge girder movement restriction device according to a third embodiment of the present invention. The bridge girder movement restriction device 300 according to the third embodiment is different from the bridge girder movement restriction devices 100 and 200 according to the first and second embodiments in that the tubular member 4 according to the first embodiment is disposed on the outer circumference side of the region A. It is the point which has arrange | positioned each tubular member 14 of 2nd Embodiment on the side.

  In the bridge girder movement restriction device 300 of the third embodiment configured as described above, the seismic performance is further improved as compared with the first and second embodiments.

  FIG. 8 is a perspective view showing a bridge girder movement restricting device according to a fourth embodiment of the present invention, and FIG. 9 is a plan sectional configuration diagram of the bridge girder movement restricting device shown in FIG. The bridge girder movement restricting device 400 of the fourth embodiment is different from the bridge girder movement restricting device 100 of the first embodiment in that the winding is spirally wound between the outer peripheral surface of the region A and the tubular member 4. This is the point at which the member 9 is disposed. In FIG. 8, the tubular member 4 outside the winding member 9 is indicated by phantom lines, and the above-described frame 7 and guide member 8 are omitted in order to avoid the drawing from becoming complicated.

  The winding member 9 is disposed such that its inner periphery is along the outer peripheral surface of the region A and its outer periphery is along the inner peripheral surface of the tubular member 4. As this winding member 9, it is possible to use various rebars (round bar rebar, deformed rebar, high strength rebar) similar to the linear member 3 and PC steel. Further, as the winding member 9, glass fiber, metal fiber using, for example, steel or stainless steel, carbon fiber, or synthetic fiber such as aramid fiber or polyester fiber, or boron fiber, volthic, for example. It is possible to use a reinforced wire rod, a reinforced bar-shaped member, a reinforced string-shaped member, or the like by any one of a fiber made of a ceramic composite material such as a fiber or a combination thereof.

  And the lower end part of this winding member 9 goes into the upper end part of the bridge pier 2 together with the lower end parts of the linear member 3 and the tubular member 4 and is fixed in an embedded manner. The upper end part of the winding member 9 is fixed to the linear member 3. And it enters into the lower end part of the bridge girder 1 together with the upper end part of the tubular member 4 and is embedded and fixed.

  In addition, in the location which the linear member 3 and the winding member 9 contact or adjoin, you may make it bind both by a soft iron wire etc., and may make both join by welding, adhesion | attachment, etc. Moreover, you may make it join both by welding, adhesion | attachment, etc. in the location where the winding member 9 and the tubular member 4 contact or adjoin.

  Such a winding member 9 is disposed after the plurality of linear members 3 are disposed and before the filler 5 is filled inside the tubular member 4 and inside the winding member 9. Thereby, manufacture of the bridge girder movement restriction device 400 is facilitated.

  In the bridge girder movement restricting device 400 thus easily manufactured, in addition to the action and effect of the bridge girder movement restricting device 100 of the first embodiment, the winding disposed on the outer peripheral side of the region A. Since the member 9 further increases the strength and prevents the linear member 3 from buckling, the seismic performance is further improved. In this embodiment, the tubular member 4 disposed outside the winding member 9 prevents further leakage of the filler 5 leaking outside from the winding member 9 to the outside. It also serves as a formwork.

  Incidentally, the winding member 9 is not limited to a substantially spiral shape with a gap between the upper and lower directions as shown in FIG. 8, and the leakage to the outside of the strength surface and the filler 5 is minimized. Considering the reduction, it is preferable that the winding members are wound in a substantially spiral shape so that the winding members are in close contact with each other so that there is no gap in the vertical direction. Further, the winding members may be configured to be wound in a substantially spiral shape so as to slightly overlap each other.

  FIG. 10: is a plane cross-section block diagram which shows the bridge beam movement restriction | limiting apparatus which concerns on 5th Embodiment of this invention. The bridge girder movement restricting device 500 of the fifth embodiment is different from the bridge girder movement restricting device 400 of the fourth embodiment in that the winding member 19 is disposed not on the outer peripheral side of the region A but on the inner peripheral side. The winding member 19 is disposed such that the outer peripheral surface thereof is along the inner peripheral surface of the region A.

  In the bridge girder movement restriction device 500 configured in this way, in addition to the action and effect of the bridge girder movement restriction device 100 of the first embodiment, the winding member 19 disposed on the inner peripheral side of the region A Because the strength is further enhanced, the seismic performance is further improved. In this embodiment, the tubular member 4 disposed outside the winding member 19 and the linear member 3 is further outside the filler 5 that leaks outside the winding member 19 and the linear member 3. It also serves as a formwork for preventing leakage into the water.

  The winding member is not limited to be provided only on the outer peripheral side or only on the inner peripheral side of the region A, and may be provided on both the outer peripheral side and the inner peripheral side of the region A. 3, as shown in FIG. 6 and FIG. 7, it is combined with a tubular member provided only on the outer peripheral side of the region A, only on the inner peripheral side, and on both the outer peripheral side and the inner peripheral side. The arrangement relationship of the winding member with respect to the tubular member is not limited, and is provided on the inner side of the tubular member, on the outer side of the tubular member, on both sides of the tubular member, or on the circumferential side where the tubular member of the region A is not provided. It may be done. In particular, when the tubular member is disposed outside the winding member (the tubular member is not disposed inside the winding member; see, for example, FIGS. 9 and 10), the tubular member is disposed outside the winding member. The tubular member also functions as a mold for preventing further leakage of the filler leaking out to the outside, and there is an advantage that it is not necessary to install and remove the mold.

  Incidentally, in the first to fifth embodiments, the upper and lower ends of the linear member 3 and the tubular members 4, 14, or the linear member 3, the tubular members 4, 14 and the winding members 9, 19. The upper and lower ends are embedded and fixed in the concrete, but at least the linear member 3 only needs to be embedded and fixed as the upper and lower ends of the bridge girder movement restriction device.

  FIG. 11 is a side sectional view showing a bridge girder movement restricting device according to a sixth embodiment of the present invention together with a bridge girder and a support structure. In the sixth embodiment, the bridge girder movement restriction devices 100, 200, 300, 400, and 500 described in the first to fifth embodiments are collectively described as a bridge girder movement restriction device 600.

  In the bridge girder movement restriction device 600 of the sixth embodiment, the lower end portion of the bridge girder movement restriction device 600 is only entered into the upper end portion of the pier 2, and the upper end portion of the bridge girder movement restriction device 600 is the bridge girder 1. It is only supposed to enter into the lower end portion of the.

  Specifically, recesses 1a and 2a are formed in the lower end surface of the bridge girder 1 and the upper end surface of the pier 2 respectively, and sheath tubes 11 and 12 made of, for example, steel pipes are embedded and fixed in the recesses 1a and 2a. The upper end portion of the bridge girder movement restricting device 600 (the upper end portion of the linear member, tubular member, winding member, etc.) enters the sheath pipe 11 and the lower end of the bridge girder movement restricting device 600 enters the sheath pipe 12. The part (the lower end part of a linear member, a tubular member, a winding member, etc.) enters, and the bridge girder movement restriction device 600, the bridge girder 1 and the bridge pier 2 are in an unfixed state.

  In such a bridge girder movement restriction device 600 of the sixth embodiment, in addition to obtaining substantially the same effect as the bridge girder movement restriction devices 100 to 500 of the first to fifth embodiments, the bridge girder can be obtained. Since the upper end and the lower end of the movement restriction device 600 only enter the bridge girder 1 and the bridge pier 2 respectively and are not fixed, the vertical extension of the bridge girder movement restriction device 600 due to temperature change or the like is caused by the bridge pier 2 or the bridge girder 1. The bridge girder 1 is allowed to be expanded and contracted in the horizontal direction due to temperature changes and the like, and is permitted without being constrained by the bridge girder movement restricting device 600 or the pier 2, and shear breakage or cracking of the pier 2 or the bridge girder 1 occurs. It is prevented.

  Here, the sheath pipes 11 and 12 are arranged on both the bridge girder 1 and the bridge pier 2 so that the upper end and the lower end of the bridge girder movement restriction device 600 are respectively entered. 2 is arranged so that only one of the upper end portion and the lower end portion of the bridge girder movement restriction device 600 enters, and the other one is the bridge girder 1 and the pier as in the first to fifth embodiments. 2 may be embedded and fixed. Even if comprised in this way, as mentioned above, expansion / contraction of the bridge girder movement restricting device 600 and the bridge girder 1 due to a temperature change or the like is allowed, and the occurrence of shear fracture and cracking is prevented.

  The present invention has been specifically described above based on the embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, an example in which the bridge girder 1 is a concrete structure has been described. However, the present invention can also be applied to bridge girders having other configurations such as a steel girder and a steel / concrete composite girder.

  In addition to the pier 2, the support structure may be an abutment (reference numerals 81 and 82 in FIG. 12A).

  In the above embodiment, the filler 5 is particularly preferably filled. However, the filler is not an essential component and may not be disposed.

  Further, the planar arrangement state of the linear member 3 may be a substantially quadrangular shape or a substantially polygonal shape such as a pentagon or more.

  Moreover, it is preferable to provide a rust prevention layer made of a thin film such as a synthetic resin on the surfaces of the tubular members 4 and 14 exposed to the outside in order to prevent corrosion. Moreover, you may give a rust prevention layer similarly to the surface of the linear member 3 or the winding members 9 and 19 as needed.

It is a side section lineblock diagram showing the bridge girder movement restriction device concerning a 1st embodiment of the present invention with a bridge girder and a support structure. It is a perspective view which shows the bridge girder movement restriction apparatus in FIG. It is a plane cross-section block diagram of the bridge girder movement restriction apparatus shown in FIG. It is explanatory drawing which shows the mount frame setting process at the time of manufacturing the bridge girder movement restriction apparatus shown in FIGS. It is explanatory drawing which shows the linear member arrangement | positioning process at the time of manufacturing the bridge girder movement restriction apparatus shown in FIGS. It is a plane section lineblock diagram showing the bridge girder movement restriction device concerning a 2nd embodiment of the present invention. It is a plane section lineblock diagram showing a bridge girder movement restriction device concerning a 3rd embodiment of the present invention. It is a perspective view which shows the bridge beam movement restriction | limiting apparatus which concerns on 4th Embodiment of this invention. It is a plane cross-section block diagram of the bridge girder movement restriction apparatus shown in FIG. It is a plane section lineblock diagram showing a bridge girder movement restricting device concerning a 5th embodiment of the present invention. It is a side section lineblock diagram showing a bridge girder movement restricting device concerning a 6th embodiment of the present invention with a bridge girder and a support structure. It is a schematic block diagram which shows an example of the conventional bridge girder movement restriction apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Bridge girder, 2 ... Pier (support structure), 3 ... Linear member, 4,14 ... Tubular member, 5 ... Filler, 6 ... Restraint member, 7 ... Mount, 7b ... Recess of mount, 8 ... Guide member , 9, 19 ... winding members, 100, 200, 300, 400, 500, 600 ... bridge girder movement restriction device, A ... area.

Claims (10)

In order to limit the movement of the bridge girder, it is provided between the bridge girder and the support structure that supports the bridge girder, and the lower end of the bridge girder enters or enters the upper end of the support structure and is fixed by being embedded. A bridge girder movement restriction device in which a part enters or enters and embeds into the lower end of the bridge girder,
A plurality of linear members arranged in parallel so that the planar arrangement state is substantially circular or substantially polygonal, and the longitudinal direction is vertically vertical;
A bridge girder movement limiting device comprising: a tubular member disposed on at least one of an outer peripheral side and an inner peripheral side of a region formed by the plurality of linear members so that a peripheral surface thereof is along the peripheral surface of the region. .   The bridge girder movement restriction device according to claim 1, further comprising a winding member wound spirally along at least one of an outer peripheral side and an inner peripheral side of a region formed by the plurality of linear members.   The bridge girder movement limiting device according to claim 1, further comprising a filler filled inside the tubular member.   The bridge girder movement restriction device according to any one of claims 1 to 3, further comprising an annular restraining member that bundles lower ends of the plurality of linear members. In order to limit the movement of the bridge girder, it is provided between the bridge girder and the support structure that supports the bridge girder, and the lower end of the bridge girder enters or enters the upper end of the support structure and is fixed by being embedded. A method for manufacturing a bridge girder movement restriction device in which a part enters the lower end of the bridge girder or enters and is embedded and fixed.
A plurality of linear members are arranged side by side so that the planar arrangement state is substantially circular or substantially polygonal, and the longitudinal direction is vertically vertical,
A bridge girder movement restriction device, wherein a tubular member is disposed on at least one of an outer peripheral side and an inner peripheral side of a region formed by the plurality of linear members so that a peripheral surface thereof is along the peripheral surface of the region. Manufacturing method.   After disposing the plurality of linear members, disposing a spirally wound member along at least one of the outer peripheral side and the inner peripheral side of the region formed by the plurality of linear members. The method for manufacturing a bridge girder movement limiting device according to claim 5.   The method for manufacturing a bridge girder movement limiting device according to claim 5 or 6, wherein after the tubular member is disposed, a filler is filled inside the tubular member.   The bridge girder movement according to any one of claims 5 to 7, wherein after arranging the plurality of linear members, an annular restraining member for bundling lower ends of the plurality of linear members is set. A method of manufacturing a restriction device. Before disposing the plurality of linear members, set a frame having a recess,
The manufacturing of the bridge girder movement restriction device according to any one of claims 5 to 8, wherein the plurality of linear members are disposed while lower ends of the plurality of linear members are placed in the recesses. Method. Before arranging the plurality of linear members, an annular shape that guides the peripheral surfaces of the plurality of linear members so that the planar arrangement state of the plurality of linear members forms the substantially circular shape or the substantially polygonal shape. Set the guide member of
The method for manufacturing a bridge girder movement restriction device according to any one of claims 5 to 9, wherein the plurality of linear members are arranged while being guided by the guide member.

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