KR102491293B1 - deck-coupled post-type footbridge with pile reinforcement cap and anti-loosening bolts - Google Patents

Abstract

A deck-coupled post-type footbridge with pile reinforcement caps and anti-loosening bolts is disclosed. The deck-coupled post-type footbridge with pile reinforcement caps and anti-loosening bolts according to the present invention comprises: a pile installed vertically on the ground; a reinforcement cap installed on an upper end of the pile; a steel coping installed on an upper part of the reinforcement cap in a direction perpendicular to a walking direction; upper girders installed on an upper surface of the steel coping; a plurality of crossbeams connecting the upper girders; respective square pipes provided on the upper girders and the crossbeams; and a deck road constructed on upper surfaces of the square pipes. The reinforcement cap is divided into 2 to 4 pieces with an accommodating portion for surrounding and accommodating a part of the upper end of the pile, and is composed of individual cap members with a flat seating end formed on an upper surface thereof, which are assembled together. Anti-loosening means are provided in first coupling bolts connecting the crossbeams and the upper girders and second coupling bolts connecting the steel coping and the upper girders to prevent loosening of each nut, caused by external forces and vibrations occurring when pedestrians walk.

Description

Deck-coupled post-type footbridge with pile reinforcement cap and anti-loosening bolts}

The present invention relates to a deck-coupled support type footbridge to which a pile reinforcement cap and an anti-loosening bolt are applied, and more particularly, when connecting an upper girder and a crossbeam and when connecting an upper girder and a steel coping, it is possible to prevent loosening of bolts, Regardless of the type of pile, such as PHC pile or steel pipe pile, the head of the pile can be reinforced by prefabricating the reinforcement cap, and after combining the steel coping with the prefabricated reinforcement cap, the upper girder can be stably and quickly installed on the steel coping. It relates to a deck-joint support type footbridge to which pile reinforcement caps and anti-loosening bolts that can be combined are applied.

In general, bridges are recognized as civil structures such as overpasses constructed on railways and roads or bridges constructed across rivers. These bridges are composed of abutments, piers, and superstructures consisting of girders and decks installed over them. do.

In addition, bridges are divided into simple bridges, continuous bridges, Gerber bridges, truss bridges, slab bridges, arch bridges, ramen bridges, suspension bridges and cable-stayed bridges according to the type of superstructure.

Recently, it is a trend that many facilities for jogging or riding bicycles are installed along rivers or streams. To this end, it is necessary to secure sufficient space because it must be installed on the ground on the river or riverside.

However, in places where roads are inevitably disconnected due to the conditions of the surrounding terrain, bridges must be installed to connect the disconnected roads, and in some cases, bridges are installed along rivers from the beginning.

In this way, a bridge installed in a river or the like so that people and bicycles can walk and run is commonly referred to as a footbridge.

As a prior literature on footbridges, Korean Patent Registration No. 10-1383208 (published date: 2014. 04.09) discloses 'sidewalk and bicycle bridges and their construction methods'. As shown in FIG. 1, the sidewalk and bicycle bridges according to the prior art include a PHC pile 10, a reinforcing cap 20 coupled to the top of the pile 10, and a reinforcing cap 20 It is configured to include a housing deer 30 coupled to the top of the housing, an upper structure 40 coupled to the top of the housing unit 30, and handrails 50 installed on both edges of the upper structure 40.

However, the sidewalk and bicycle bridges of this structure were difficult to construct because the piles supporting the top plate (girder) were composed of two. That is, there was a problem in that construction difficulties occurred because the main girder had to be placed and combined by matching the heights of the reinforcing caps coupled to the two piles on both sides.

On the other hand, a deck is provided on the upper structure of the footbridge so that users can safely walk.

The deck was constructed by arranging a plurality of natural timbers in the width direction and then coupling each natural timber to the upper structure of the footbridge with screws. In this way, damage such as widening of natural wood occurred due to the construction of fixing and coupling by penetrating natural wood with screws, and there were also problems such as deterioration in durability and damage to aesthetics due to rust caused by exposure of metal screws to rainwater. .

. Republic of Korea Patent No. 10-1383208 (Announcement date: 2014. 04.09)

The object of the present invention is to prevent the loosening of bolts when connecting the upper girder and the crossbeam constituting the footbridge and when connecting the upper girder and the steel coping, and to cover the head of the pile by prefabricating a reinforcing cap regardless of the type of pile. It is possible to reinforce the, and after combining the steel coping with the reinforcing cap, it is to provide a means to stably and easily combine the upper girder with the steel coping.

Another object of the present invention is to improve workability by simply combining deck materials using clips without directly connecting them with screws, in installing and constructing a deck made of natural wood, synthetic wood, or larch carbonized wood on the upper surface of the main girder of a footbridge. In addition, it is to provide a means that can minimize damage to the deck material.

The above object, according to the present invention, a pile installed vertically on the ground; Reinforcement cap installed on top of the pile; Steel coping installed on the top of the reinforcing cap in a direction perpendicular to the walking direction; An upper girder installed on the upper surface of the steel coping; A plurality of crossbeams connecting the upper girder; Each of the square tubes provided on the upper girder and the crossbeam; And a deck rod installed on the upper surface of the square pipe, and the reinforcement cap is divided into 2 to 4 parts by having a receiving part for wrapping and accommodating a part of the upper end of the pile, and each of which has a flat seating end formed on the upper surface. The cap member is assembled with each other, and the first coupling bolt connecting the crossbeam and the upper girder and the second coupling bolt connecting the steel coping and the upper girder are caused by external force and vibration generated during walking of a pedestrian. It is achieved by a deck-coupled support footbridge to which a pile reinforcement cap and an anti-loosening bolt are applied, characterized in that each nut is provided with an anti-loosening means for preventing the loosening of each nut.

In the cap member, flanges having first fastening through-holes are formed in regions where they come into contact with each other, and reinforcing ribs are provided between the flange and the body.

In the joint area of the seating end and the steel coping, when the lower part of the steel coping is seated on the upper surface of the seating end and coupled, a plurality of second fastening through-holes formed on the bottom surface of the lower portion of the steel coping and formed on the seating end A positioning means is provided for maintaining a temporary coupling state in which the plurality of third fastening through-holes coincide with each other, and the positioning means includes: at least one positioning groove formed on an upper surface of the seating end; and at least one positioning protrusion protruding from the lower bottom surface of the steel coping to be inserted into the positioning groove.

Around the positioning groove, an extension guide surface for inducing entry of the positioning protrusion is formed to be inclined toward the positioning groove from the periphery, and an end of the positioning protrusion may be formed to be curved.

An elastic pad for absorbing impact may be provided between the upper end of the pile and the lower surface of the seating end.

The elastic pad may be configured by vulcanizing and integrating a steel plate and a rubber material alternately.

In the deck rod, each deck material made of natural wood, synthetic wood, or larch carbonized wood is coupled to the upper surface of the square tube by a clip, and the clip has a through hole formed vertically and the upper surface of the square tube A fixing portion seated on and fixed by a fixing screw fastened through the through hole; and a pair of pressing pieces having self-elasticity while forming a deformation space at the top of the through-hole by extending outwardly on both sides based on the fixing part and then extending inward facing each other.

An insertion protrusion for fixing the deck material by being inserted into a seating groove concavely formed on both sides of the deck material may be formed on an outer surface of the pressure piece.

In the clip, a horizontal through hole is formed in a horizontal direction that intersects the longitudinal direction of the fixing part, and when the pressing piece is inserted into the seating groove, a coupling screw is fastened to the side surface of the deck material through the horizontal through hole. It may be configured to combine the clip and the deck material.

The pressure piece is formed thinner from the bottom to the top, and a discharge hole for discharging rainwater flowing into the deformation space is formed in a vertical direction in the fixing part, and on the bottom surface of the fixing part, connected to the discharge hole. A discharge groove may be formed in a direction perpendicular to the longitudinal direction of the fixing part.

Inside the square tube, a filling material including waste tire chips is formed in a square bar shape to buffer shock caused by a pedestrian walking in the walking space, prevent noise, prevent loosening of the fixing screw, and block the inflow of foreign substances. It may be molded and inserted, or may be injected and filled into the inside of the square tube.

According to the present invention, by applying a spring washer to the bolts connecting the upper girder and the crossbeam constituting the footbridge and the bolts coupling the upper girder and the steel coping, it is possible to prevent the loosening of the nuts due to vibrations generated during pedestrian walking, However, by prefabricating the reinforcing cap, it can be applied regardless of the size or type of pile to provide the effect of reinforcing the head.

In addition, since the reinforcing cap is configured in a prefabricated manner, it is possible to provide an effect that it is easy to transport and store, and the work of coupling to the top of the pile can be performed easily and quickly.

In addition, since the deck material made of natural wood, synthetic wood, or larch carbonized wood is installed on the square pipe by the clip, not only can the work of fixing the deck material to the square pipe be done quickly and easily, but also the screws for fixing the deck material By not being exposed, it is possible to provide the effect of securing the safety of pedestrians.

In addition, when the clip is fixed to the square pipe with the fixing screw, the sealant is filled to fill the gap between the fixing screw and the through hole, preventing the inflow of rainwater and preventing corrosion of the fixing screw, and the sealant prevents loosening of the fixing screw. can provide an effect that can prevent

In addition, by using waste tire chips as a filling material filled in each tube, recycling of waste tires can be maximized and environmental pollution can be minimized.

1 is a perspective view showing a deck rod according to the prior art.
2 is an exploded perspective view showing the lower structure of a deck-coupled footbridge to which a pile reinforcement cap and an anti-loosening bolt are applied according to the present invention.
3 is a perspective view showing a state in which a deck rod is coupled to the footbridge structure shown in FIG. 2;
4 is a bottom perspective view of a coupled state showing a deck-coupled footbridge to which the pile-reinforced cap and anti-loosening bolts shown in FIG. 2 are applied.
5 is a perspective view of a combined state of a deck-coupled footbridge to which the pile-reinforced cap and anti-loosening bolts shown in FIG. 2 are applied.
6 and 7 are exploded perspective views showing another embodiment of the loosening preventing means shown in FIG. 2 .
8 is a view showing another coupling structure to another embodiment of the upper girder and the crossbeam shown in FIG.
9 is a perspective view showing a positioning means provided on the lower surface of the inner shield and steel coping shown in FIG. 2;
10 to 13 are views for explaining the construction process of the deck rod provided in the deck coupled footbridge to which the pile reinforcement cap and the loosening prevention bolt according to the present invention are applied.
14 and 15 are views showing respective application examples as a footbridge according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

Among the accompanying drawings, Figure 2 is an exploded perspective view showing the lower structure of the deck-coupled holding type footbridge to which the pile reinforcement cap and the loosening prevention bolt according to the present invention are applied, and Figure 3 is the pile reinforcement cap and loosening prevention shown in FIG. It is a perspective view of a combined state showing a deck-joined support footbridge with bolts applied.

As shown in FIGS. 2 and 3, the deck-coupled holding footbridge 100 to which the pile reinforcement cap and the loosening prevention bolt according to the present invention are applied, the pile 200 installed vertically on the ground, and the pile 200 The reinforcing cap 300 of the prefabricated structure installed on the top of the reinforcing cap 300, the steel coping 400 installed in the direction perpendicular to the walking direction on the top of the reinforcing cap 300, and the upper part installed on the upper surface of the steel coping 400 The girder 500, a plurality of crossbeams 600 connecting each of the upper girders 500, each of the square tubes 700 provided on the upper surfaces of the upper girder 500 and the crossbeam 600, and the square tubes 700 The deck rod 800 constructed on the upper surface of the ), the first coupling bolt 610 coupling the upper girder 500 and the crossbeam 600, and the second coupling bolt 610 connecting the steel coping 400 and the upper girder 500. It includes a loosening prevention means 900 provided on the coupling bolt 510.

This will be described in more detail.

The pile 200 is for separating the footbridge 100 from the ground or water surface and supporting the lower part, and is a high-strength pile made by applying centrifugal force. : It can be composed of Pretensioned spun High strength Concrete pile, centrifugal reinforced concrete pile (RC-Pile: Reinforced Concrete pile), steel pipe pile or H-steel pile.

The reinforcing cap 300 is installed at the top of the pile 200 to reinforce the upper end of the pile 200 and to ensure that the connection with the steel coping 400 is made quickly, firmly and stably, the pile 200 are combined while wrapping the top of the In this embodiment, the reinforcing cap 300 is configured in a prefabricated manner. The reinforcing cap 300 is divided into two to four cap members 310 and 320 each having semi-cylindrical receiving portions 312 and 322 for accommodating a portion of the upper end of the pile 200. In this embodiment, it is described that it is divided into two parts, but it is not limited thereto. Flat seating ends 314 and 324 are formed on the upper surfaces of each cap member 310 and 320, respectively. A plurality of third fastening through-holes 314A and 324A are formed at the edge of each seating end 314 and 324, respectively. Flanges 316 and 326 having first fastening through-holes 316A and 326A are respectively formed in contact areas of each cap member 310 and 320 configured to face each other, and between the flanges 316 and 326 and the bodies 311 and 321, the flanges are formed. A plurality of reinforcing ribs 313 and 323 for supporting and reinforcing the ribs 316 and 326 are formed, respectively.

Since the flanges 316 and 326 on both sides are firmly coupled by the third coupling bolt 350 and the nut 350A in a state of contact with each other, both cap members 310 and 320 can be integrated with each other.

In addition, since the reinforcing cap 300 is divided into a pair of cap members 310 and 330, the operation of coupling the reinforcing cap 300 to the upper end of the pile 200 can be made quickly and easily. For example, since the reinforcing cap 300 is divided, transportation can be carried out smoothly, and if necessary, the cap members 310 and 320 on both sides are combined and integrated, and then covered and combined with the top of the pile 200, or both caps After the members 310 and 320 are separated and transported to the construction site, the top of the pile 200 is wrapped with each cap member 310 and 320, and then assembled to firmly couple to the pile 200 to reinforce the upper end of the pile 200. and a quick connection with the steel coping 400 is possible.

In addition, since the reinforcing cap 300 is divided into a pair of cap members 310 and 320, it can correspond to various sizes of the pile 200. As an example, when the outer diameter of the pile 200 is smaller than the inner diameter of the reinforcing cap 300, the top of the pile 200 is wrapped with a pair of auxiliary plates in a semicircular arc shape surrounding the outer circumferential surface of the pile 200 The reinforcing cap 300 can be firmly coupled to the upper end of the pile 200 by binding each auxiliary plate member to each other while wrapping the cap members 310 and 320 on both sides. At this time, both ends of the auxiliary plate are positioned between the flanges 316 and 326 on both sides to be coupled with the third coupling bolt 350 like the flanges 316 and 326 on both sides, so that the coupling force can be further improved. As another example, when the outer diameter of the pile 200 is larger than the inner diameter of the reinforcing cap 300, the length of the third coupling bolt 350 is long to firmly couple the flanges 316 and 326 of both cap members 310 and 320. By doing so, the cap member 300 can be firmly coupled to the top of the pile 200.

Meanwhile, an elastic pad 380 for absorbing impact is provided between the upper end of the pile 200 and the lower surface of the seating ends 314 and 324 . More specifically, as shown in FIG. 2, a steel plate 382 and a rubber material 384 are alternately laminated on the top of the pile 200 and the bottom surface of the seating ends 314 and 324 (inside the receiving part) to vulcanize An elastic pad 380 integrated by adhesive is installed. An impact generated from the upper girder 500 can be buffered by the elastic pad 380, and displacement can be responded to by an external force.

The steel coping (400: steel coping) is for connecting the pile 200 and the upper girder 500 and supporting the upper girder 500, the center of the lower part is coupled to the reinforcing cap 300, and the upper girder (500) is combined. The steel coping 400 is installed on the top of the reinforcing cap 300 in a direction perpendicular to the walking direction, that is, in the width direction of the footbridge 100 to support each upper girder 500. At the edge of the lower portion 440 of the steel coping 400 seated and coupled to the seating ends 314 and 324 of the reinforcing cap 300, a second fastening through hole 442 for matching with the third fastening through hole 314A and 324A are formed The shape of the steel coping 400 is the upper surface on which the upper girder 500 is installed, the lower surface installed on the top of the reinforcement cap 300, and a pair of inclined surfaces installed upward at both ends of the bottom surface , It may be formed in an inverted trapezoidal shape including a plurality of vertical surfaces installed vertically between the upper and lower surfaces and a pair of inclined surfaces.

Meanwhile, the reinforcing cap 300 and the steel coping 400 are provided with positioning means for easily and quickly coupling the lower part 440 of the steel coping 400 to the reinforcing cap 300. As shown in FIG. 6, the positioning means places the lower portion 440 of the steel coping 400 on the lower surface of the lower portion 440, which is the joint area between the seating ends 314 and 324 and the steel coping 400, and the seating ends 314 and 324. A plurality of second fastening through-holes 442 formed on the bottom surface of the lower part 440 of the steel coping 400 and a plurality of third fastening through-holes 314A formed on the seating ends 314 and 324 when seated and coupled to the upper surface of the 324A) is to maintain a matched bonding state with each other.

As shown in FIG. 9, the positioning means includes at least one positioning groove 370 formed on the upper surface of the seating ends 314 and 324 and the steel coping 400 to be inserted into the positioning groove 370. It consists of at least one or more positioning protrusions 470 protruding from the bottom of the lower part 440 . Around the positioning groove 370, an extension guide surface 372 for inducing entry of the positioning protrusion 470 is formed inclined toward the positioning groove 370 from the periphery. In addition, the end of the positioning protrusion 470 is formed to be curved. It is preferably formed in a hemispherical shape. The extension guide surface 372 is formed around the positioning groove 370 and the end of the positioning protrusion 470 is formed in a hemispherical shape, so that the lower part 440 of the steel coping 400 is formed on the upper surface of the seating ends 314 and 324. After seating the positioning protrusion 470 into the positioning groove 370 can be quickly and easily inserted. That is, the hemispherical end of the positioning protrusion 470 can be easily guided and inserted into the positioning groove 370 only by being inserted into the expansion guide surface 372 . In particular, in the case where two or more positioning grooves 370 and positioning protrusions 470 are formed by maintaining a distance from each other, the second fastening through holes 442 and the third fastening through Matching of the balls 314A and 324A can be made more accurately and quickly.

Due to the action of the positioning means, the second fastening through holes 442 of the steel coping 400 and the plurality of third fastening through holes 314A and 324A formed in the seating ends 314 and 324 coincide with each other. Not only can the state be stably maintained, but also the lateral load of the reinforcing cap 300 and the steel coping 400 can be reinforced more firmly.

The upper girder 500 is composed of H beams, and has a structure in which a plurality of H beams are respectively disposed on the upper surface of the steel coping 400 in the width direction of the footbridge 100 and connected to each other by a plurality of cross beams 600. have This upper girder 500 can be freely manufactured in a flat, straight or curved shape. As shown in FIG. 2, each upper girder 500 is coupled to the steel coping 400 by second coupling bolts 510. The second coupling bolts 510 pass through the plurality of wing through-holes 522 formed in the lower wing 520 of the upper girder 500 and through the coping through-holes 450 formed in the steel coping 400, then nuts ( 512) is concluded. Therefore, the upper girder 500 and the steel coping 400 can maintain a solid coupling state.

The crossbeam 600 is made of an H beam to connect each of the upper girders 500 disposed in the width direction with respect to the footbridge 100. Each crossbeam 600 is connected to each upper girder 500 by a connecting plate 620. That is, as shown in FIG. 6, a connecting plate 620 formed with crossbeam through-holes 622 for the first coupling bolt 610 to pass through is welded and fixed to both ends of the crossbeam 600, and each Since the first coupling bolts 610 are fastened to the nut 612 through each crossbeam through hole 622 and the vertical through hole 532 formed in the vertical portion 530 of the upper girder 500, both upper girders ( 500) can be firmly connected and coupled by the crossbeam 600.

The loosening prevention means 900 includes a first coupling bolt 610 connecting the cross beam 600 and the upper girder 500 and a second coupling bolt 510 coupling the steel coping 400 and the upper girder 500. In ), it is to prevent loosening of each nut (512,612) due to external force and vibration generated during walking of a pedestrian. The anti-loosening means 900 is made of a coil spring 910 as shown in FIG. 2 or formed in a curved waveform as shown in FIGS. 6 and 7 and is formed by two neighboring bolts, that is, a neighboring Two first coupling bolts 610 or two neighboring coupling bolts 510 are made of plate springs 920 each having bolt through holes 924 formed in each of the two floors 922 so as to pass through.

In this way, by providing the loosening prevention means 900 to the first and second coupling bolts 610 and 510, the first and second coupling bolts 610 and 510 due to external force applied to the footbridge 100 or vibration generated when a pedestrian walks loosening can be prevented.

In particular, when the anti-loosening means 900 is made of a plate spring 920 having bolt through holes 924 formed in two floors 922, the two adjacent first coupling bolts 610 or two first Since the two coupling bolts 510 form a coupled state by forming a pair, loosening of the bolts 510 and 610 or the nuts 512 and 612 can be more firmly prevented.

Meanwhile, as shown in FIG. 8, each of the upper girder 500 and the crossbeam 600 may be mutually coupled by a connecting plate 680 having a "┏" shape. That is, one side of the connecting plate 680 is welded to the upper girder 500, and the other side protruding in the horizontal direction is coupled to the crossbeam 600 by bolts and nuts. Therefore, both upper girders 500 can be firmly coupled to each other. At this time, it is natural that the aforementioned anti-loosening means 900 can be applied to the bolt.

As shown in FIG. 11, each square pipe 700 coupled to the upper surface of the upper girder 500 and the cross beam 600 is made of a square pipe made of natural wood, synthetic wood, or larch carbonized wood. It is intended to horizontally support each deck material 810 made of. Deck materials 810 are installed on the upper surface of each pipe 700. Inside the square pipe 700, a filler 710 including waste tire chips is filled to buffer the walking impact caused by a pedestrian walking on the deck material 810, prevent noise, and block the inflow of foreign substances including rainwater. It can be.

The filler 710 is composed of 85 to 95% by weight of waste tire chips and 5 to 15% by weight of a binder made of urethane. Preferably, it may be configured by mixing 90% by weight of waste tire chips and 10% by weight of a binder. The filler 710 may be molded into a square bar shape and inserted into the square tube 700 to be filled. As another embodiment, the filler 710 may be mixed with 90% by weight of waste tire chips and 10% by weight of a binder, and then filled into the square pipe 700 by injection. In this case, the filler 710 can be filled even inside the square tube 700 having an irregular cross-sectional shape.

In this way, as the filler 710 is filled in the square tube 700, the clip 850 is fixed to the square tube 700, and the deck material 810 is installed by the deck material 810 by each clip 850. ) The filling material 710 absorbs the shock generated when walking while stepping on it, and since the walking shock is absorbed, noise generation during walking is minimized or noise is not generated. That is, all of the square tubes 700 are formed in a hollow shape. When a pedestrian walks while the deck material 810 is coupled to the hollow horizontal square tube, the walking impact according to the pedestrian's walking is applied to the hollow square tube. transmitted and makes noise. In order to solve this problem, by filling the inside of the square pipe 700 with the filler 710, noise according to the walking of the pedestrian is not generated and the walking shock can be buffered.

In addition, when the clip 850 is fastened to the square tube 700 with the fixing screw 830, the fixing screw 830 fastened to the square tube 700 and the filler 710 penetrates into the soft filler 710 and adheres to it. Loosening can be minimized, and the fixing force of the fixing screw 830 can be further improved when the filler 710 expands.

As shown in FIGS. 10 to 13, the deck rod 800 includes deck materials 810 made of natural wood, synthetic wood, or larch carbonized wood and constructed on the upper surface of the square pipe 700, and an upper girder ( 500) is constructed as a handrail 880 for protecting pedestrians walking in the walking space.

The deck material 810 is installed on the upper surface of each tube 700 to provide a walking space for pedestrians, and has a plate shape having a predetermined thickness, width, and length. On the upper surface of the deck material 810, protrusions for preventing slipping are formed long in the longitudinal direction, and seating grooves 814 are formed concavely along the longitudinal direction on both side surfaces in the width direction. The seating grooves 814 on both sides are for inserting the pressing pieces 852 of each clip 850 from both sides, respectively, and are formed in the same shape as the outer surface of the pressing pieces 852.

Since the deck material 810 is supported elastically by inserting the pressing pieces 852 of each clip 850 into the seating grooves 814 on both sides, the deck material 810 is attached to the square tube 700 without a separate fastening means. can be firmly fixed.

As shown in FIG. 10, the seating groove 814 is, when the pressing piece 852 is inserted into the seating groove 814, the ends 852A-1 of the pressing piece 852 are of both deck materials 810. It is formed with a depth (D) deeper than the width (W) of the pressing piece 852 so as not to protrude more than the upper end of each side. This is to prevent the pressing piece 852 inserted into the seating groove 814 from being exposed between both deck materials 810.

At the bottom of both sides of the deck material 810, when the pressing piece 852 is inserted into the seating groove 814 in a state where the clip 850 is fixed to the upper surface of the square tube 700, the fixing part 854 of the clip 850 ) is closely adhered to the side surface of the To this end, the lower side of the side of the deck material 810 forms a vertical plane, such as the side of the fixing part 854. In this way, since the bottom of the side of the deck material 810 adheres to the side of the fixing part 854 without any gap, the deck material 810 can be firmly fixed and coupled to the square tube 700 by the clip 850.

The clip 850 for fixing the deck material 810 to the square tube 700 is for fixing the deck material 810 to the square tube 700 in a non-fastening manner. As shown in FIGS. 10 and 11, the clip 850 is formed with a predetermined width, height, and length, and a plurality of through holes 854A are formed on both sides of the upper surface and seated on the upper surface of the square tube 700 to form through holes. The fixing part 854 fixed by the fixing screw 830 fastened to the square tube 700 through (854A), extending outwards on both sides based on the fixing part 854, and then extending inward again to "<" It is formed into a shape and includes a pair of pressing pieces 852 extending upward to face each other so as to form a deformation space S at an upper portion of the through hole 854A. That is, pressing pieces 852 of a “<” shape facing each other are protruded from both sides of the upper end of the fixing part 854 .

Insertion protrusions 852A are formed on the outer surface of each pressure piece 852 to be inserted into and seated in the seating grooves 814 concavely formed on both sides of the deck material 810. The insertion protrusions 852A protrude outwards as the pressing pieces 852 are formed in a “<” shape. Since the "<" shaped insertion protrusion 852A is inserted into the seating groove 814, the deck material 810 and the clip 850 can maintain a more robust and stable coupled state, and the deck material 810 Departure upward can be prevented.

The pressing piece 852 is formed thinner from the bottom to the top. That is, the thickness from the fixing part 854 to the insertion protrusion 852A is thicker than the thickness from the insertion protrusion 852A to the upper end 852A-1. This is to respond to the contraction and expansion of the deck material 810 while the lower part of the pressing piece 852 generates a solid supporting force and the upper part is deformed when the deck material 810 contracts or expands. In addition, since the lower part of the pressing piece 852 is formed thicker than the upper part, it is to generate a greater elastic force when a large load is applied. In this way, since the lower portion of the pressing piece 852 is formed thicker, the deck material 810 can be firmly pressed and supported with a stronger supporting force.

As described above, the pressing pieces 852 are formed on both sides of the upper part of the fixing part 854 so as to face each other, so that the deformation space S is formed between the pressing pieces 852 on both sides corresponding to the upper part of the through hole 854A. Since the deformation space S is formed between the pressing pieces 852, each of the pressing pieces 852 can be sufficiently deformed during contraction and expansion of both deck materials 810 due to temperature change. In addition, since each pressing piece 852 can be elastically deformed, even when the deck material 810 contracts and expands, the pressing piece 852 does not depart from the seating groove 814 and is stably inserted into the pressing state. can keep

Meanwhile, a discharge hole 854B for discharging rainwater flowing into the deformation space S is formed in the fixing part 854 . This discharge hole 854B is formed in the vertical direction between both through holes 854A. And, on the bottom surface of the fixing part 854, a discharge groove 854C connected to the discharge hole 854B is formed in a direction perpendicular to the longitudinal direction of the fixing part 854. The discharge groove (854C) is to ensure that rainwater discharged through the discharge hole (854B) is discharged to both sides of the lower surface of the fixing part (854) without pooling. Rainwater flowing into the upper surface of the fixing part 854 by this rainwater discharge structure may be discharged to the lower part of the fixing part 854 through the discharge hole 854B and the discharge groove 854C. In particular, the discharge hole 854B formed on the bottom surface of the fixing part 854 forms a rainwater discharge path between the bottom surface of the fixing part 854 and the top surface of each pipe 700 to prevent rainwater from accumulating. However, when the sealant is injected and filled into the discharge hole 854B, the inflow of rainwater may be fundamentally blocked.

In the clip 850, at least one horizontal through hole 880 is formed in the longitudinal direction of the fixing part 854, that is, in a horizontal direction crossing the longitudinal direction of the clip 850. The horizontal through hole 880, when the pressing piece 852 is inserted into the seating groove 814, the coupling screw 882 is fastened to the side surface of the deck material 810 through the horizontal through hole 880, and the clip 850 ) And to further combine the deck material 810. Since the coupling screw 882 is fastened to the deck material 810 through the horizontal through hole 880, the clip 850 and the deck material 810 can maintain a more robust coupling state. At this time, loosening of the coupling screw 882 may be prevented by fastening the coupling screw 882 while the sealant is injected into the horizontal through hole 880 .

Such a clip 850 may be made of a synthetic resin material or a metal material.

On the other hand, in the through hole 854A of the fixing part 854, as shown in FIG. 12, when the fixing screw 830 is fastened, the gap between the fixing screw 830 and the through hole 854A is filled to secure the fixing screw ( Sealant 870 is injected to prevent loosening of 830 and block inflow of rainwater or foreign matter.

That is, when the fixing screw 830 is fastened, the sealant 870 is injected to prevent loosening of the fixing screw 830 by filling the gap between the fixing screw 830 and the through hole 854A and to block the inflow of rainwater or foreign substances. do. The sealant 870 may also be made of silicon.

In this way, when the fixing screw 830 is fastened to the square tube 700 through the through hole 854A in a state where the sealant 870 is injected into the through hole 854A, the sealant 870 is attached to the fixing screw 830. Since the gap between the inner diameters of the through hole 854A and the gap between the fixing screw 830 and the sealant 870 are filled, the inflow of foreign substances or rainwater through the through hole 854A may be blocked. In addition, since the sealant 870 integrates the fixing part 854 and the fixing screw 830, loosening of the fixing screw 830 can be prevented or minimized. In particular, since the inflow of rainwater is blocked, corrosion of the square pipe 700 as well as the fixing screw 830 due to the inflow of rainwater can be prevented, and thus the durability of the square pipe 700 can be improved.

The assembly construction process of the deck-coupled support type footbridge 100 to which the pile reinforcement cap and the loosening prevention bolt configured as described above are applied will be described as follows.

As shown in FIG. 2, in a state in which the pile 200 is vertically constructed, the elastic pad 380 is seated on the upper surface of the pile 200.

Next, wrap the elastic pad 380 and the upper end of the pile 200 with both cap members 310 and 320 so that the upper end of the elastic pad 380 and the pile 200 is accommodated in each receiving part 312 and 322, and then the third coupling bolt Assemble by fastening with (350). In this process, the reinforcing cap 300 is firmly coupled to the top of the pile 200.

When the reinforcing cap 300 is coupled to the pile 200, the bottom surface of the lower part 440 of the steel coping 400 is seated on the upper surface of the seating ends 314 and 324 of the reinforcing cap 330, and then the positioning protrusion 470 It is inserted into the positioning groove 370.

As the positioning protrusion 470 is inserted into the positioning groove 370, the second fastening through hole 442 and the third fastening through hole 314A, 324A coincide with each other to enter a temporary coupling state.

When the second fastening through hole 442 and the third fastening through hole 314A and 324A are matched, the fourth coupling bolt 460 is attached to the second fastening through hole 442 and the third fastening through hole 314A and 324A. After penetrating, it is coupled by fastening with a nut 462. At this time, the loosening prevention means 900 may be installed on the fourth coupling bolt 460 .

Through this process, the steel coping 400 can be firmly coupled to the correct position on the upper surface of the reinforcing cap 300.

On the other hand, after each upper girder 500 is seated on the upper surface of the steel coping 400 at intervals, the second coupling bolts 510 are connected to a plurality of bolts formed on the lower wings 520 of the upper girder 500 matched with each other. After passing through the wing through hole 522 and the coping through hole 450 formed in the steel coping 400, insert the loosening preventing means 900 and fasten with the nut 512. Therefore, the upper girder 500 and the steel coping 400 can maintain a solid coupling state, and the loosening of the second coupling bolts 510 can be prevented.

Subsequently, after matching the through holes 622 of the connecting plate 620 provided at both ends of the crossbeam 600 with the vertical through holes 532 formed in the vertical portion 530, the first coupling bolts 610 are passed through. After doing so, the loosening prevention means 900 is inserted into the first coupling bolts 610 and the nuts 612 are fastened. Through this process, the upper girders 500 on both sides can be firmly connected and combined by the cross beam 600.

When the upper girders 500 are connected to each other by the cross beams 600, the square tubes 700 are arranged on the upper surfaces of the upper girders 500 and the cross beams 600 and then fixed so that the upper surfaces of each are aligned horizontally with each other .

When the square tube 700 is installed, the clip 850 is fixed to the upper surface of each square tube 700 with a fixing screw 830, and the pressing piece 852 on one side of the clip 850 is one deck material 810 After pressing the deck material 810 toward the clip 850 to be inserted into the seating groove 814 of the deck material 810 through the horizontal through-hole 880, the coupling screw 882 (814) ) to conclude Subsequently, the pressing piece 852 of the other clip 850 is inserted into the receiving groove 814 on the opposite side of the deck material 810, and then fixed to the square tube 700 with another fixing screw 830. Then, another coupling screw 882 is fastened to the opposite mounting groove 814 through the horizontal through hole 880 . In this process, the deck material 810 is able to maintain a stable and firm coupling state to the square pipe 700. And by repeating these operations, the deck rod 800 is completed.

As described above, by combining the upper girder 500 and the crossbeam 600 constituting the footbridge 100 and applying the loosening prevention means 900 when combining the steel coping 400 and the upper girder 500. It is possible to prevent loosening of the nuts 512 and 612 due to vibration generated when a pedestrian walks.

In addition, by prefabricating the reinforcing cap 300, it can be applied regardless of the type and size of the pile 200, and transport and coupling operations can be performed quickly and easily.

In addition, since the deck material 810 made of natural wood, synthetic wood, or larch carbonized wood is installed to the square pipe 700 by the clip 850, the work of fixing the deck material 810 to the square pipe can be done quickly and easily. In addition, since the fixing screw 830 for fixing the deck material 810 is not exposed, the safety of pedestrians can be secured, and in particular, when the deck material 810 is stretched, the clip 850 is deformed and contracted. By accommodating the deformation or damage of the deck material 810 due to expansion and contraction can be prevented.

In addition, when the clip 850 is fixed to the square tube 700 with the fixing screw 830, the sealant 870 is filled to fill the gap between the fixing screw 830 and the through hole 854A, thereby blocking the inflow of rainwater. Accordingly, corrosion of the fixing screw 830 can be prevented, and the sealant 870 can provide an effect of preventing the fixing screw 830 from loosening.

In addition, by using waste tire chips as a filling material filled in each pipe 700, recycling of waste tires can be maximized and environmental pollution can be minimized.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and it is common knowledge in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should fall within the scope of the claims of the present invention.

100: footbridge 200: file
300: reinforcement cap 400: steel coping
500: upper girder 600: cross bar
700: square tube 800: deck rod
900: loosening prevention means

Claims (11)

Pile installed vertically on the ground;
Reinforcement cap installed on top of the pile;
Steel coping installed on the top of the reinforcing cap in a direction perpendicular to the walking direction;
An upper girder installed on the upper surface of the steel coping;
A plurality of crossbeams connecting the upper girder;
Each of the square tubes provided on the upper girder and the crossbeam; and
Including a deck rod installed on the upper surface of the each pipe,
The reinforcing cap,
It has an accommodating part for wrapping and accommodating a part of the upper end of the pile, and is divided into 2 to 4 pieces, and is composed of each cap member having a flat seating end formed on the upper surface and assembled with each other,
A first coupling bolt connecting the crossbeam and the upper girder, and a second coupling bolt connecting the steel coping and the upper girder,
The steel coping is between the upper surface where the upper girder is installed, the lower surface installed on the upper portion of the reinforcement cap, a pair of inclined surfaces installed upward at both ends of the bottom surface, and the upper surface, the lower surface, and the pair of inclined surfaces. It has an inverted trapezoidal shape including a plurality of vertical surfaces installed vertically on the
The cap member,
Flanges having first fastening through-holes are formed in areas that contact each other, and reinforcing ribs are respectively provided between the flange and the body,
The deck load,
Each deck material made of natural wood, synthetic wood, or larch carbonized wood is coupled to the upper surface of each tube by a clip,
The clip is
A fixing unit having a through hole formed vertically and seated on the upper surface of the square tube and fixed by a fixing screw fastened through the through hole; and
It is configured to include a pair of pressing pieces having self-elasticity while forming a deformation space at the top of the through hole by extending upward and outward from the fixing part and then extending upward and facing each other inward,
On the outer surface of the pressing piece,
An insertion protrusion is formed for fixing the deck material by being inserted into the seating groove formed concavely on both sides of the deck material,
In the clip,
A horizontal through hole is formed in a horizontal direction crossing the longitudinal direction of the fixing part, and when the pressing piece is inserted into the seating groove, a coupling screw is fastened to the side surface of the deck material through the horizontal through hole, and the clip and the deck to combine ashes,
The first coupling bolt or the second coupling bolt is provided with a loosening preventing means for preventing loosening of the nut due to external force and vibration generated during walking of a pedestrian,
The loosening prevention means,
made of coil springs,
Characterized in that it is made of a plate spring formed in a curved waveform and having a bolt through hole formed on each floor so that the two neighboring first and second coupling bolts pass through each.
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied. delete According to claim 1,
In the joint area of the seating end and the steel coping,
When the lower portion of the steel coping is seated on the upper surface of the seating end and coupled, the plurality of second fastening through-holes formed on the bottom surface of the lower portion of the steel coping and the plurality of third fastening through-holes formed on the seating end coincide with each other A positioning means is provided to maintain the temporary coupling state,
The positioning means,
at least one positioning groove formed on an upper surface of the seating end; And characterized in that it consists of at least one or more positioning protrusions protruding from the lower bottom surface of the steel coping to be inserted into the positioning groove.
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied. According to claim 3,
Around the positioning groove,
Characterized in that the extension guide surface for inducing entry of the positioning protrusion is formed inclined toward the positioning groove from the periphery, and the end of the positioning protrusion is formed curved.
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied. According to claim 1,
Between the top of the pile and the bottom of the seating end,
Characterized in that an elastic pad for absorbing shock is provided,
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied. delete delete delete delete According to claim 1,
The pressure piece,
It is formed thinner from the bottom to the top, and a discharge hole for discharging rainwater flowing into the deformation space is formed in a vertical direction in the fixing part, and a discharge groove connected to the discharge hole is formed on the bottom surface of the fixing part. Characterized in that it is formed in a direction perpendicular to the longitudinal direction of the government,
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied. According to claim 1,
Inside the tube,
A filler containing waste tire chips is molded and inserted in the form of a square bar to buffer shock caused by a pedestrian walking in the walking space, prevent noise, prevent loosening of the fixing screw, and block the inflow of foreign substances, or Characterized in that it is injected and filled into the interior of
Deck combined support type footbridge with pile reinforcement cap and anti-loosening bolt applied.

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