JP5661011B2 - Manufacturing method of superstructure for bridge, bridge and superstructure for bridge - Google Patents

Description

The present invention relates to a bridge and a superstructure used at the time of construction thereof , and particularly relates to a bridge that increases the strength of the bridge.

  The construction method of the pile type pier which is the construction method of the bridge using the conventional superstructure is demonstrated using FIG. The main girder 1 of the unfinished pier where the pile head fixing pipe 4 has been installed in advance is cantilevered from the completed part of the pier, and the projecting tip of the main girder 1 extends along the main girder 1 of the unfinished pier By adjusting the tension of the wire 2 passed between the bridge and the completed part of the jetty so that it is parallel to the main girder 1, the direction, angle, or distortion state of the main girder 1 is adjusted to approach the completed state. Hold. Thereby, the position of the pipe head fixing pipe 4 attached to the main girder 1 is brought close to the completed state, and the tubular pile 5 is driven through the pile head fixing pipe 4. Moreover, the cross beam 3 to which the pile head fixing pipe 4 is attached and the main beam 1 are connected by a double pipe structure that can rotate in the circumferential direction. Thereby, the kind of components can be reduced corresponding to the angle change with the main girder 1 and the pile head fixing pipe, and cost reduction can be aimed at.

JP 2000-96582 A

  However, the above-described conventional method for constructing a pile jetty has the following points to be improved. In the conventional method for constructing a pile-type pier, as shown in FIG. 18 (b), an interval is generated between the upper surface P 4 of the pile head fixing pipe 4 and the lining plate 6. For this reason, only the canopy (not shown) arrange | positioned on the pipe 4 for pipe head fixing must hold | maintain the thrust from the tubular pile 5, and the load of superstructure itself. For this reason, there is a point to be improved that it is difficult to further increase the strength of the pile-type jetty.

An object of the present invention is to provide an upper work to be used in the construction of a bridge that is easy to construct and can construct a high-strength bridge.

The superstructure manufacturing method according to the present invention is a superstructure manufacturing method for manufacturing a superstructure combining a pile member, and a main girder, a cross girder, and a pile head fixing member,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a cylindrical portion through which the pile member can be inserted, a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member, The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The upper surface of the pile head fixing member is in direct contact with a floor slab disposed on the superstructure or indirectly through a canopy that closes the upper surface of the pile head fixing member, and the upper surface of the pile head fixing member is The center of the cylindrical portion of all the pile head fixing members is the central axis in the longitudinal direction of the main girder and the cross beam so that it is perpendicular to the central axis of the pile member when inserted into the pile head fixing member Connecting the main girder and the cross girder to the side surface of the pile head fixing member so as to be located on the intersection with the central axis in the longitudinal direction of the pile, and arranging the short main girder so as to be flat, An inclined surface in which a long main girder is diagonally arranged between short main girders, and the pile head fixing member, the flat portion composed of the short main girder, and the oblique portion along the long main girder are alternately arranged. forming, said main beam and said crossbeam is rectangular, are arranged in a ladder-like or U-shaped To obtain the superstructure, characterized by.

The bridge according to the present invention is a bridge having a pile member, and a superstructure combining a main girder, a cross girder, and a pile head fixing member,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a cylindrical portion through which the pile member can be inserted, a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member, The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The superstructure is
The main girders and the cross beams are arranged so that the centers of the cylindrical portions of all the pile head fixing members are located on the intersections between the longitudinal central axis of the main girders and the longitudinal central axis of the cross girders. The main girder and the cross girder are connected to the side surface of the pile head fixing member , and the short main girder is arranged to be flat, and the long main girder is arranged obliquely between the short main girder. Is arranged in a rectangular shape, a ladder shape, or a U-shape, and the upper surface of the pile head fixing member is directly closed with the floor slab disposed on the upper work or the upper surface of the pile head fixing member. Indirect contact with the canopy, and the upper surface of the pile head fixing member is perpendicular to the central axis of the pile member when inserted through the pile head fixing member, and the pile head fixing member and the short Inclinations in which flat portions of main girders and oblique portions along the long main girders are alternately arranged It is a surface, characterized by.

The superstructure according to the present invention is a superstructure that combines a pile head and a pile head fixing member having a cylindrical portion into which a main girder, a cross girder, and the pile member can be inserted,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member,
The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The main girders and the cross beams are arranged so that the centers of the cylindrical portions of all the pile head fixing members are located on the intersections between the longitudinal central axis of the main girders and the longitudinal central axis of the cross girders. The main girder and the cross girder are connected to the side surface of the pile head fixing member , and the short main girder is arranged to be flat, and the long main girder is arranged obliquely between the short main girder. Are placed in a rectangular shape, a ladder shape, or a U-shape, and a canopy that directly or directly closes the top surface of the pile head fixing member and a floor slab on which the upper surface of the pile head fixing member is disposed on the superstructure Indirectly through the pile head fixing member, the upper surface of the pile head fixing member being perpendicular to the central axis of the pile member when the pile head fixing member is inserted, and the pile head fixing member and the short main girder Are inclined surfaces in which flat portions made of and oblique portions along the long main girder are alternately arranged. It features a.

  According to the manufacturing method of the superstructure which concerns on this invention, the upper surface of a pile head fixing member can be closed by a floor slab directly or indirectly. Therefore, the load of the floor slab can be made to oppose the pushing-up force of the pile member inserted through the pile head fixing member. Therefore, the strength of the bridge can be increased. Moreover, since the upper surface of the tubular pile head fixing member is perpendicular to the central axis of the pile member, the pile member can be easily inserted into the pile head fixing member. Therefore, bridge construction can be facilitated.

  According to the manufacturing method of the superstructure according to the present invention, the main girder and the horizontal girder can be coupled to the pile head fixing member, so that the shape of the superstructure can be easily formed. Therefore, bridge construction can be performed efficiently.

  According to the superstructure manufacturing method according to the present invention, since a U-shaped, rectangular, ladder-shaped superstructure can be used, the upper part corresponding to the construction of the boarding part and the standard part in the construction of the bridge Can be used. Therefore, since the superstructure suitable for construction can be provided, the construction of the bridge can be performed efficiently.

  According to the bridge and the superstructure according to the present invention, the upper surface of the pile head fixing member can be directly or indirectly closed by the floor slab. Therefore, the load of the floor slab can be made to oppose the pushing-up force of the pile member inserted through the pile head fixing member. Therefore, the strength of the bridge can be increased. Moreover, since the upper surface of the tubular pile head fixing member is perpendicular to the central axis of the pile member, the pile member can be easily inserted into the pile head fixing member. Therefore, bridge construction can be facilitated.

It is a three-plane figure of the superstructure used with the construction method of the bridge concerning the present invention. It is a figure which shows the structure of the pile head fixing member 115 of the superstructure 101. FIG. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of boarding part construction. It is a partial cross section figure when floor slab FS is constructed on superstructure 101. It is a three-plane figure of the superstructure used with the construction method of the bridge concerning the present invention. It is a figure which shows the construction method of the bridge using the superstructure at the time of standard part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of standard part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of standard part construction. It is a figure which shows the construction method of the bridge using the superstructure at the time of standard part construction. It is a three-plane figure of the superstructure used with the construction method of the bridge concerning the present invention. It is a partial cross section figure when floor FS is constructed on superstructure 301. It is a figure which shows the other Example of a superstructure. It is a figure which shows the construction method of the conventional bridge.

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

Configuration of First Superstructure The superstructure 101 used in the bridge construction method according to the present invention will be described with reference to FIG. The superstructure 101 is assembled in advance prior to the construction of the bridge. At the time of assembly, after assembling parts of a size that can be transported by a transporting means such as a truck in a factory, and further transporting to the actual construction site by the transporting means, the form of the superstructure 101 shown in FIG. Assemble until.

  1A is a top view of the superstructure 101, FIG. 1B is a front view of the superstructure 101, and FIG. 1C is a right side view of the superstructure 101. As shown in FIG. 1A, the superstructure 101 includes a plurality of main girders 111, cross girders 113, and pile head fixing members 115.

  The main beam 111 and the horizontal beam 113 are arranged in a ladder shape. The main beam 111 and the horizontal beam 113 are made of H-shaped steel.

  The main girder 111 includes a relatively short main girder 111a and a relatively long main girder 111b. As shown in FIG. 1C, one end of each of the main beam 111a and the main beam 111b is welded and fixed to a side surface portion 115a (described later) of the pile head fixing member 115. Moreover, as shown to FIG. 1 (a), (c), the other end which is not being fixed to the pile head fixing member 115 of the main girder 111a and the main girder 111b uses a predetermined fixing plate, a volt | bolt, and a nut. Are joined together on a straight line.

  The cross beam 113 is composed of a horizontal beam 113a and a horizontal beam 113b having a predetermined length. As shown in FIG. 1B, one end of each of the cross beam 113a and the cross beam 113b is welded and fixed to the side surface portion 115a of the pile head fixing member 115. Moreover, as shown to FIG. 1 (a), (b), the other end which is not being fixed to the pile head fixing member 115 of the cross beam 113a and the cross beam 113b uses a predetermined fixing plate, a volt | bolt, and a nut. Are joined together on a straight line.

  As shown in FIG. 1A, the pile head fixing member 115 has a center C <b> 5 disposed on the central axis J <b> 1 of the main girder 111. In addition, the pile head fixing member 115 is arranged on the center axis J3 of the center axis J3 of the cross beam 113, that is, the pile head fixing member 115 has the center C5 and the center axis J1 of the main girder 111. It arrange | positions so that it may exist on the intersection with the central axis J3 of the cross beam 113. FIG. Thereby, the shape of the superstructure 101 can be easily prepared. Moreover, as shown in FIG.1 (b), the pile head fixing member 115 is arrange | positioned so that the upper surface P5 may become perpendicular | vertical with respect to the central axis J5 of the steel pipe pile which penetrates the pile head fixing member 115. FIG. Furthermore, as shown in FIG.1 (c), the main girder 111 arrange | positioned on both sides of the pile head fixing member 115 is arrange | positioned on a straight line.

  Each pile head fixing member 115 is joined with a main beam 111a, a main beam 111b, and a horizontal beam 113a or a horizontal beam 113b. However, for the pile head fixing member 115 located at the upper end of the superstructure 101 in FIG. 1A, only the main girder 111a and the horizontal beam 113a or the horizontal beam 113b are joined to the pile head fixing member 115. Yes. In addition, in FIG. 1 (a)-(c), description is abbreviate | omitted about the rib part 115c (after-mentioned) arrange | positioned at each pile head fixing member 115. FIG.

  The configuration of the pile head fixing member 115 will be described with reference to FIG. 2A shows a top view of the pile head fixing member 115, and FIG. 2B shows an XX cross-sectional view of the pile head fixing member 115 shown in FIG. 2A. As shown in FIG. 2A, the pile head fixing member 115 has a cylindrical portion 115a, a flange portion 115b, and a rib portion 115c. A flange portion 115b is disposed at one end of the cylindrical portion 115a. A plurality of holes 115d are formed in the flange portion 115b. The holes 115d are formed to fix the pile head canopy (described later) to the pile head fixing member 115 using bolts and nuts. The inner diameters of the cylindrical portion 115a and the flange portion 115b are substantially equal to the outer shape of the steel pipe pile serving as a pier.

  The rib portions 115c are arranged radially from the center C5 of the pile head fixing member 115. As shown in FIG. 2B, the rib portion 115c is joined to the side surface of the cylindrical portion 115a and the flange portion 115b. Thereby, the strength of the pile head fixing member 115 is increased.

2nd bridge construction method The bridge construction method using the superstructure 101 is demonstrated using FIGS. In addition, about the bridge construction method, when constructing the superstructure 101 with respect to the abutment (hereinafter, when constructing the superstructure), and newly constructing the superstructure 101 with respect to the constructed superstructure 101 (Hereinafter, the standard part construction)

1. At the time of carrying-in part construction As shown in FIG. 3 (a), the guide piles G1 to G4 are installed in a rectangular shape at predetermined positions using the vibratory hammer VH by the crane truck CT arranged on the already-finished abutment BA. In addition, in Fig.3 (a), the guide pile G2 and the guide pile G4 which exist in the back | inner side of the guide pile G1 and the guide pile G3 are represented by the parenthesis writing.

  Next, as shown in FIG.3 (b), receiving material R1 is installed so that the guide pile G1 and the guide pile G2 installed in parallel with respect to the front-end | tip of the abutment BA may be bridged using the crane vehicle CT. Similarly, the receiving material R2 is installed for the guiding pile G3 and the guiding pile G4. As shown in FIG.3 (c), the superstructure 101 is arrange | positioned on the receiving material R1 and the receiving material R2 using the crane vehicle CT.

  As shown to Fig.4 (a), the table machine TM is arrange | positioned on one pile head fixing member 115 of the superstructure 101 using the crane vehicle CT. Next, as shown in FIG. 4B, the down-the-hole hammer DH is inserted into the table machine TM and the pile head fixing member 115 from above using the crane vehicle CT. And as shown in FIG.4 (c), the ground is excavated by the table machine TM and the down-the-hole hammer DH, and the fixing hole for fixing a steel pipe pile to a ground is formed.

  When the formation of the fixing hole is completed, the down-the-hole hammer DH is pulled upward as shown in FIG. Further, the table machine TM is removed. As before, as shown in FIG. 5 (b), after placing the table machine TM on the other pile head fixing member 115 of the superstructure 101, placing the down-the-hole hammer DH, excavating the ground, Drill one fixed hole. Then, as shown in FIG. 5 (c), while the bucket BK charged with mortar is moved using the crane vehicle CT, the mortar for rooting is driven into the fixed hole using the tremy pipe TT.

  As shown to Fig.6 (a), the steel pipe pile SP used as a bridge pier is penetrated from the top to the pile head fixing member 115, and is inserted in a fixing hole using the crane vehicle CT after placement of mortar. Then, as shown in FIG.6 (b), after inserting the steel pipe pile SP in a fixed hole, the monken HB is operated with the crane vehicle CT and the steel pipe pile SP is piled.

  As shown to Fig.7 (a), the steel pipe pile SP1 which protruded upwards from the upper surface of the superstructure 101 is cut | disconnected and removed. Then, as shown in FIG.7 (b), mortar is driven in the pile head of the steel pipe pile SP.

  As shown in FIG. 7 (c), after placing mortar on the pile head, the pile head canopy TC is fixed to the upper surface of the pile head fixing member 115. The pile head fixing member 115 and the pile head canopy TC are fixed to holes 115d (see FIG. 2) formed in the flange portion 115b of the pile head fixing member 115 and holes formed in the pile head canopy TC. Insert the bolt and fix it with a nut.

  After fixing the pile head canopy TC, the conductive material is removed as shown in FIG. And as shown in FIG.8 (b), the crawler scaffold is laid on the installed superstructure 101, and construction of the boarding part in bridge construction is completed. After that, bridge construction will be performed at the time of construction of the standard part.

  After the construction of the superstructure 101 at the time of the entry section construction, the floor FS and the adjustment concrete AS are constructed on the superstructure 101 through the construction of the superstructure 201 at the time of the standard construction shown in Example 2. The FIG. 9 shows a side view of the superstructure 101 in a state where the floor slab FS and the adjusting concrete AC are applied. In addition, in FIG. 9, some pile head fixing members 115 and some steel pipe piles SP are displayed by the cross section.

  After the steel pipe pile SP is inserted into the pile head fixing member 115 perpendicularly to the upper surface P5 of the pile head fixing member 115 and the upper surface P5 of the pile head fixing member 115 is closed by the canopy TC, the floor FS is placed on the canopy TC. Is constructed. Therefore, the upper surface P5 of the pile head fixing member 115 is in contact with the lower surface PF of the floor slab FS indirectly through the canopy TC. Thereby, the excess weight F1 from the floor slab FS can be made to oppose the pushing force F2 by the steel pipe pile SP. Therefore, it is possible to construct a bridge having high strength.

  The superstructure 101 in Example 1 described above was used at the time of construction of the boarding portion. On the other hand, the superstructure 201 in the present embodiment is used when performing construction on the superstructure 101 that has already been constructed (hereinafter referred to as standard construction).

Configuration of First Superstructure The superstructure 201 used in the bridge construction method according to the present invention will be described with reference to FIG. Here, FIG. 10A is a top view of the upper work 201, FIG. 10B is a front view of the upper work 201, and FIG. 10C is a right side view of the upper work 201. 10 (a) to 10 (c), the same reference numerals are given to the same configurations as those in FIGS. 1 (a) to 1 (c).

  In the superstructure 201, unlike the superstructure 101 in which the main beam 111 and the horizontal beam 113 are arranged in a ladder shape, the main beam 111 and the horizontal beam 113 are arranged in a U-shape.

At the time of construction of the second standard part As shown in FIG. 11 (a), the crane CT is disposed on the superstructure SS where the steel pipe pile SP (1) and the steel pipe pile SP (2) have been constructed. The upper work 201 is placed at a predetermined position by the crane truck CT, and the main beam 111b of the upper work 201 and the main beam 111a of the upper work SS are connected. As a result, the upper work 201 is cantilevered with respect to the upper work SS. When the upper work 201 is cantilevered at a predetermined position, a wire rod (for example, a piano wire) is passed between the main beam 111b of the upper work 201 to be connected and the main beam 111a of the upper work SS. By adjusting the tension of the wire rod so as to be parallel to the main girder 111a of the work SS, the state of the main girder 111b of the upper work 201, the angle, the distortion, and the like may be brought closer to the state at the time of completion ( JP 2000-96582).

  Next, as shown in FIG.11 (b), the table machine TM is arrange | positioned on one pile head fixing member 115 of the superstructure 101 using the crane vehicle CT. Then, as shown in FIG. 11C, the down-the-hole hammer DH is inserted through the table machine TM and the pile head fixing member 115 from above using the crane vehicle CT. At this time, the down-the-hole hammer DH is inserted perpendicularly to the upper surface P5 (see FIG. 10) of the pile head fixing member 115.

  As shown in FIG. 12A, the ground is excavated by the table machine TM and the down-the-hole hammer DH, and a fixing hole for fixing the steel pipe pile to the ground is formed. When the formation of the fixing hole is completed, the down-the-hole hammer DH is pulled upward as shown in FIG. Further, the table machine TM is removed. And as shown in FIG.12 (c), while moving the bucket BK which injected | thrown-in mortar using the crane vehicle CT, the mortar for rooting is driven in a fixed hole using the treme tube TT.

  As shown in FIG. 13 (a), after placing the mortar, the steel pipe pile SP (3) serving as a bridge pier is inserted into the pile head fixing member 115 from above and inserted into the fixing hole using the crane vehicle CT. At this time, the steel pipe pile SP (3) is inserted perpendicularly to the upper surface P5 (see FIG. 10) of the pile head fixing member 115. Then, as shown in FIG.13 (b), after inserting the steel pipe pile SP (3) in a fixed hole, the monken HB is operated with the crane truck CT, and the steel pipe pile SP (3) is piled.

  As shown in FIG. 13C, the steel pipe pile SP1 (3) protruding upward from the upper surface of the superstructure 201 is cut and removed.

  Then, as shown to Fig.14 (a), mortar is driven in the pile head of the steel pipe pile SP. After placing the mortar on the pile head, the pile head canopy TC is fixed to the upper surface of the pile head fixing member 115. The pile head fixing member 115 and the pile head canopy TC are fixed to a hole 115g formed in the flange portion 115f (see FIG. 2) of the pile head fixing member 115 and a hole formed in the pile head canopy TC. Insert the bolt and fix it with a nut.

  Then, as shown in FIG. 14B, a crawler scaffold is laid on the installed superstructure 201. Then, as shown in FIG.14 (c), steel pipe pile SP (4) is constructed similarly to construction of steel pipe pile SP (3), and the crawler scaffold is laid. Thereby, the area | region for laying the floor slab by the crane vehicle CT is ensured. Then, after removing the already laid crawler scaffold, a floor slab is laid in the removed area. Thereby, the construction of the standard part in the bridge construction is completed.

  In the bridge construction method in Example 1 and Example 2 described above, the floor slab was laid horizontally. In the construction of the bridge in this embodiment, a floor slab is laid with a predetermined inclination.

First Superstructure Configuration The superstructure 301 used in the bridge construction method according to the present invention will be described with reference to FIG. The superstructure 301 is used when constructing a bridge having an inclination. 15A is a top view of the upper work 301, FIG. 15B is a front view of the upper work 301, and FIG. 15C is a right side view of the upper work 301. In FIGS. 15A to 15C, the same components as those in FIGS. 1A to 1C are denoted by the same reference numerals, and detailed description thereof is omitted.

  The superstructure 301 includes a main beam 311, a horizontal beam 113, and a pile head fixing member 115. The main beam 311 and the horizontal beam 113 are arranged in a ladder shape. The main beam 311 and the horizontal beam 113 are made of H-shaped steel.

  The main girder 311 is composed of relatively short main girders 311a and 311c and a relatively long main girder 311b. As shown in FIG. 15C, one end of each of the main girder 311a and the main girder 311c is welded and fixed to the side surface portion 115a (see FIG. 2) of the pile head fixing member 115. As shown in FIGS. 1A and 1C, both ends of the main girder 311b are connected to one end of the main girder 311 not fixed to the pile head fixing member 115, a predetermined fixing plate, bolts and nuts. Using each other and joined on a straight line.

As shown in FIG. 15A, the pile head fixing member 115 has the center C <b> 5 disposed on the central axis J <b> 1 of the main girder 311. In addition, the pile head fixing member 115 is arranged on the center axis J3 of the center axis J3 of the cross beam 113, that is, the pile head fixing member 115 has the center C5 and the center axis J1 of the main girder 311. It arrange | positions so that it may exist on the intersection with the central axis J3 of the cross beam 113. FIG. 15B, the pile head fixing member 115 is disposed so that the upper surface P5 is perpendicular to the central axis J5 of the steel pipe pile passing through the pile head fixing member 115. Furthermore, as shown in FIG.15 (c), the main girders 311a and 311c arrange | positioned on both sides of the pile head fixing member 115 are arrange | positioned on a straight line. On the other hand, the main beam 311b connected between the main beam 311a and the main beam 311c is arranged obliquely. That is, as shown in FIG. 15C, the superstructure 301 has an inclined surface in which flat portions around the pile head fixing member 115 and oblique portions along the main beam 311b are alternately arranged. .

Construction using the second superstructure 301 The construction of the bridge at the time of entry work construction using the superstructure 301 is the same as in the first embodiment. Moreover, in the construction at the time of construction of the standard part, similarly to the second embodiment, construction is performed using an upper work in which the main girder 311b of the main girder 311 is obliquely arranged in a U-shape (see FIG. 10). The construction of the bridge at the time of construction of the standard part is the same as in Example 2.

  Here, FIG. 16 shows a side view of the superstructure 301 in a state in which the floor slab FS and the adjustment concrete AS are applied. In addition, in FIG. 16, some pile head fixing members 115 and some steel pipe piles SP are displayed by the cross section.

  Similarly to the construction using the superstructure 101 in the first embodiment, also in the construction using the superstructure 301, the steel pipe pile SP is inserted into the pile head fixing member 115 perpendicularly to the upper surface P5 of the pile head fixing member 115. After the top surface P5 of the pile head fixing member 115 is closed by the canopy TC, the floor slab FS is constructed on the canopy TC. Therefore, the upper surface P5 of the pile head fixing member 115 is in contact with the lower surface PF of the floor slab FS indirectly through the canopy TC. Thereby, the excess weight F1 from the floor slab FS can be made to oppose the pushing force F2 by the steel pipe pile SP. Therefore, it is possible to construct a bridge having high strength. In addition, in order to form a predetermined inclined surface using the superstructure 301, the adjustment concrete AC2 is applied.

[Other Embodiments]
(1) Shape of superstructure: In the first embodiment, the superstructure 101 has a ladder shape, but may have a rectangular shape. The same applies to the superstructure 301 in the third embodiment. In the second embodiment, the upper work 201 has a U-shape, but a plurality of U-shaped upper works 201 may be connected. What is necessary is just to connect the main beam 111a and the main beam 111b on the straight line in the case of connection.

  In the first embodiment, the main girder 111 arranged between the pile head fixing members 115 is formed by connecting the two main girders 111a and the main girder 111b as in the superstructure 101 (FIG. 1), the number of main beams forming the main beam arranged between the pile head fixing members 115 is not limited. For example, as in the superstructure 102 shown in FIGS. 17A and 17B, three main beams 112a, main beams 112b, and main beams 112c are combined to form the main beam 112. Furthermore, you may make it form the main beam arrange | positioned between the pile head fixing members 115 by one main beam, without couple | bonding a several main beam. In this case, pile head fixing members 115 are coupled to both ends of the main beam.

  Similarly to the main beam, the number of the horizontal beam forming the horizontal beam arranged between the pile head fixing members 115 is not limited. For example, you may make it form the cross beam arrange | positioned between the pile head fixing members 115 by one cross beam 114 like the superstructure 102 shown to Fig.17 (a), (b).

  (2) Coupling of cross beam: In the above-described first to third embodiments, the cross beam 113 is connected to the pile head fixing member 115. May be rectangular, ladder, or U-shaped.

101 ··· Superstructure 111 ··· Main girder 111a ··· Main girder 111b ··· Main girder 113 ··· Horizontal girder 113a ··· Horizontal girder 113b ··· Horizontal girder 115 · ··· Pile head fixing member P5 ··· Upper surface FS ··· Floor slab 201 · · · Upper work 301 · · Upper work 311 · · · Main girder 311a ···・ Main girder 311b ... Main girder 311c ... Main girder 102 ... Superstructure 112 ... Main girder 112a ... Main girder 112b ... Main girder 112c ... Main girder 114 ...... Horizontal girder

Claims (3)

A superstructure manufacturing method for manufacturing a superstructure combining a pile member, and a main girder, a cross girder, and a pile head fixing member,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a cylindrical portion through which the pile member can be inserted, a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member, The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The upper surface of the pile head fixing member is in direct contact with a floor slab disposed on the superstructure or indirectly through a canopy that closes the upper surface of the pile head fixing member, and the upper surface of the pile head fixing member is The center of the cylindrical portion of all the pile head fixing members is the central axis in the longitudinal direction of the main girder and the cross beam so that it is perpendicular to the central axis of the pile member when inserted into the pile head fixing member Connecting the main girder and the cross girder to the side surface of the pile head fixing member so as to be located on the intersection with the central axis in the longitudinal direction of the pile, and arranging the short main girder so as to be flat, An inclined surface in which a long main girder is diagonally arranged between short main girders, and the pile head fixing member, the flat portion composed of the short main girder, and the oblique portion along the long main girder are alternately arranged. forming, said main beam and said crossbeam is rectangular, are arranged in a ladder-like or U-shaped Possible to obtain the superstructure,
The manufacturing method of the superstructure characterized by this. A pile member and a bridge having a superstructure combining a main girder, a cross girder and a pile head fixing member,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a cylindrical portion through which the pile member can be inserted, a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member, The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The superstructure is
The main girders and the cross beams are arranged so that the centers of the cylindrical portions of all the pile head fixing members are located on the intersections between the longitudinal central axis of the main girders and the longitudinal central axis of the cross girders. The main girder and the cross girder are connected to the side surface of the pile head fixing member , and the short main girder is arranged to be flat, and the long main girder is arranged obliquely between the short main girder. Is arranged in a rectangular shape, a ladder shape, or a U-shape, and the upper surface of the pile head fixing member is directly closed with the floor slab disposed on the upper work or the upper surface of the pile head fixing member. Indirect contact with the canopy, and the upper surface of the pile head fixing member is perpendicular to the central axis of the pile member when inserted through the pile head fixing member, and the pile head fixing member and the short Inclinations in which flat portions of main girders and oblique portions along the long main girders are alternately arranged It is a surface,
A bridge characterized by A pile member, and a superstructure combining a pile head fixing member having a main girder, a horizontal girder, and a cylindrical portion through which the pile member can be inserted,
The main girder consists of a relatively short main girder and a relatively long main girder,
The pile head fixing member has a flange portion arranged at one end of the cylindrical portion, and a rib portion arranged radially from the center of the pile head fixing member,
The rib portion is joined to the side surface of the cylindrical portion and the flange portion,
The inner diameter of the cylindrical portion and the flange portion is substantially equal to the outer diameter of the pile member,
The main girders and the cross beams are arranged so that the centers of the cylindrical portions of all the pile head fixing members are located on the intersections between the longitudinal central axis of the main girders and the longitudinal central axis of the cross girders. The main girder and the cross girder are connected to the side surface of the pile head fixing member , and the short main girder is arranged to be flat, and the long main girder is arranged obliquely between the short main girder. Are placed in a rectangular shape, a ladder shape, or a U-shape, and a canopy that directly or directly closes the top surface of the pile head fixing member and a floor slab on which the upper surface of the pile head fixing member is disposed on the superstructure Indirectly through the pile head fixing member, the upper surface of the pile head fixing member being perpendicular to the central axis of the pile member when the pile head fixing member is inserted, and the pile head fixing member and the short main girder Are inclined surfaces in which flat portions made of and oblique portions along the long main girder are alternately arranged. That,
Superstructure used for the construction of bridges characterized by