JP4893391B2 - Steel pipe sheet pile upset, steel pipe sheet pile using upset, and upset method - Google Patents

Description

  The present invention relates to a bellows material for a steel pipe sheet pile, and more particularly to a material for preventing a fixing portion of a tie material from being damaged or damaged.

Conventionally, Thai-style sheet pile walls using steel pipe sheet piles for revetments and retaining walls have been used.
FIG. 5 is a cross-sectional view showing an example of a tie-type steel pipe sheet pile wall used for revetment construction.

  The tie-material-type steel pipe sheet pile wall 60 shown in FIG. 5 connects the steel pipe sheet pile 12 and the constructions 40a, 40b with tie materials 14a, 14b such as tie ropes or tie rods, and the steel pipe sheet pile 12 is embedded into the ground and the tie material 14a. , 14b, and the stability of the wall structure is improved.

  In general, in such construction, a tie material 14a is often provided between the preparatory work 40a and the upper portion of the steel pipe sheet pile 12. However, when the wall height of the steel pipe sheet pile wall 60 is large due to construction at a large water depth, When the depth of penetration of steel pipe sheet piles is not sufficient with respect to the wall height after dredging the bottom of the sea or river facing the sea, or when reinforcement of the revetment or seismic reinforcement is performed As shown in FIG. 5, another stub 40b is provided, and a tie material 14b is additionally installed between the stub 40b and the central portion of the steel pipe sheet pile 12, thereby providing a structure of the steel pipe sheet pile wall 60. May be reinforced. By carrying out like this, the yield strength with respect to the bending stress concerning especially the steel pipe sheet pile 12 can be improved.

  By the way, in constructing the steel pipe sheet pile wall 60 adopting the two-stage tie material 14a, 14b as described above, the fixing unit 19 for fixing the additionally installed tie material 14b to the steel pipe sheet pile 12 includes: Conventionally, the following structure is used.

  6 is an enlarged cross-sectional view of the fixing portion 19 between the tie material 14b and the steel pipe sheet pile 12 in FIG. 5, and FIG. 7 is a plan view thereof.

As shown in FIGS. 6 and 7, the tie material 14 b is installed so as to penetrate the connecting portion between the steel pipe sheet piles 12, and the reaction force is transmitted from the tie material 14 b to the steel pipe sheet pile 12 to the penetrated end portion. The grooved steel 54 is provided so as to sandwich this end portion from above and below. Then, the grooved steel connecting plate 48 and the bearing plate 50 are inserted into the end portion of the tie material 14b, and the nut 28 is screwed to the tip end portion of the tie material 14b having a screw structure, whereby the steel pipe sheet pile 12 is tied. The material 14b is fixed.
Further, an additional striking material 56 may be filled between the groove steel 54 and the steel pipe sheet pile 12 in order to disperse the stress transmitted from the groove steel 54 to the steel pipe sheet pile 12.

  However, in the configuration shown in FIG. 6 and FIG. 7, the fixing portion 19 protrudes to the water side (left side in the drawing) on the side surface of the central portion of the steel pipe sheet pile 12. There is a risk that the tie material 14b may come off when the hull swings or the like and contacts the fixing unit 19 and the fixing unit 19 is damaged. Further, even if the contact is small enough to cause direct damage, the fixing portion 19 is always exposed to water, so that corrosion gradually proceeds from the damaged portion, and the tie material 14b eventually becomes. There is also a risk of detachment. Further, the contact may cause damage or breakage not only to the fixing portion but also to the hull.

  In addition, when the tie material 14b is newly installed along with the fence, the steel pipe sheet pile 12 is affected by soil water pressure due to aging and is deformed or moved from the initial installation position. For example, the contact between the channel steel 54 and the steel pipe sheet pile 12 may be insufficient, and stress may not be transmitted. On the other hand, since a large stress is locally applied to the steel pipe sheet pile 12 at the contacting portion, the steel pipe sheet pile 12 may be deformed.

  The present invention has been made in view of the above points, and in supporting a steel pipe sheet pile with a tie material, it is possible to protect the fixing portion at the end of the tie material with a simple configuration. An object of the present invention is to provide a steel pipe sheet pile upset material capable of preventing a large force from being applied locally on the sheet pile, a steel pipe sheet pile using the upset and upset, and a construction method thereof.

In order to achieve the above object, the present invention has a horizontally extending abutment plate that abuts a plurality of continuously installed steel sheet piles from the water side, and one end portion of the tensile reinforcing material is fixed. a wale material you support the plurality of steel pipe piles are, the abutment plate has a projecting portion that projects so as to enter into the valleys between the steel pipe sheet pile adjacent the overhanging portion The tensile reinforcement material is fixed to the first (first invention).

  According to the bellows raising material of the steel pipe sheet pile according to the present invention, since the fixing portion of the tie material is fixed at the position where it enters the trough on the side surface between the steel pipe sheet piles, the height protruding from the steel pipe sheet pile of the fixing portion Can be reduced. Thereby, the possibility that an external object such as a hull comes into contact with the fixing unit is reduced, and breakage or damage of the fixing unit can be prevented. The tensile reinforcing material is a tie material such as a tie rod or a tie rope.

According to a second aspect, in the first aspect, the contact plate includes curved portions that contact the outer periphery of the steel pipe sheet pile on both sides of the projecting portion.
According to the steel pipe sheet pile upset material according to the present invention, stress can be distributed and transmitted from the tie material to the steel pipe sheet pile, so that a large stress is not locally applied to the steel pipe sheet pile. Thereby, stress can be fully transmitted to a steel pipe sheet pile, suppressing a deformation | transformation of a steel pipe sheet pile. In addition, since stress can be dispersed and transmitted to the steel pipe sheet pile, it is not necessary to fill with additional striking material or the like, and construction costs can be reduced.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the protective portion includes a protective portion that protects the fixing portion to which one end portion of the tensile reinforcing material is fixed, and the protective portion includes an upper edge and a lower edge of the contact plate. The rib plate is provided on at least one of the ribs and protrudes to the one end side of the tensile reinforcing material larger than the protrusion length of the fixing portion .
According to wale material of the steel pipe piles according to the present invention, to protect the fixing portion more external object to the protection unit is a rib plate, it is possible to prevent breakage or damage to the protruding portion of the fixing portion, the rib plate Thus, it is possible to effectively resist the reaction force applied from the tie material to the fixing portion of the erection material .

4th invention is an upset of a steel pipe sheet pile, Comprising: The upset material in any one of Claims 1-3 is provided between the said several steel pipe sheet piles, and the adjacent upset material is connected mutually. It is characterized by becoming.
According to the upset of the steel pipe sheet pile according to the present invention, the stress between the tie material and the steel pipe sheet pile can be transmitted evenly and dispersedly. Thereby, while avoiding a deformation | transformation of a steel pipe sheet pile, a tie material can fully support a steel pipe sheet pile.

A fifth invention is characterized in that, in the fourth invention, the erection material is provided for each of the two steel pipe sheet piles.
According to the bellows of the steel pipe sheet pile according to the present invention, the bellows material is provided for every two steel pipe sheet piles, so that the bellows material can be always in contact with the outer peripheral side surfaces of the steel pipe sheet piles that are continuously installed. Thus, stress can be transmitted evenly and distributed to all steel pipe sheet piles.

6th invention is a steel pipe sheet pile, Comprising: It supported using the belly raising of Claim 4 or 5. It is characterized by the above-mentioned.

7th invention is the construction method of a steel pipe sheet pile, and while driving a plurality of steel pipe sheet piles continuously, it connects an adjacent steel pipe sheet pile by a joint, forms an insertion hole in the joint, and the other end is One end portion of a tensile reinforcement member connected to the preparatory work is inserted into the insertion hole, and the urging member according to any one of claims 1 to 3 is inserted into the valley portion between the adjacent steel pipe sheet piles. It is installed so that a portion may enter, and one end portion of a tensile reinforcement member inserted through the insertion hole is fixed to the overhanging portion, and the adjacent belly raising member is connected.

  According to the present invention, in supporting a steel pipe sheet pile with a tie material, it is possible to protect the fixing portion at the end of the tie material with a simple configuration, and furthermore, a large force is locally applied to the steel pipe sheet pile. Steel pipe sheet piles that can prevent the above problem, steel pipe sheet piles using the belly upsets and the belly upsets, and the construction method thereof can be provided.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.
In the following description, parts corresponding to those using the same configuration as in FIG. 5 or FIG.

FIG. 1 is a perspective view schematically showing a state in which the belly raising material according to the present embodiment is installed on a steel pipe sheet pile.
As shown in FIG. 1, the belly raising member 10 in the present embodiment is provided to extend in the horizontal direction along the horizontal surface of the steel pipe sheet pile 12 in order to transmit the tension of the tie material 14 b to the steel pipe sheet pile 12. By being connected to each other, the abdomen 11 is formed.

2 is an enlarged perspective view showing an installation portion of the bellows material of FIG. 1, FIG. 3 is a vertical sectional view of FIG. 1 cut along a joint portion of a steel pipe sheet pile, and FIG. 4 is a plan view of FIG. It is.
As shown in FIG. 2, the flank 11 is configured by connecting the flank member 10 including the contact plate 101 and the rib plate 102 in a horizontal direction by a connection plate 30. In addition, the length of the connecting direction of the urging member 10 constituting the urging member 11 is, for example, about two of the outer diameters of the continuous steel pipe sheet piles 12.

  As shown in more detail in FIG. 4, the abutment plate 101 is formed in a flat shape, and a projecting portion 101a projecting into a valley between adjacent steel pipe sheet piles 12, and a steel pipe from both sides of the projecting portion 101a. The curved portion 101b is curved with substantially the same curvature as the outer periphery of the sheet pile 12, and the curved portion 101b is in contact with the outer peripheral surface of each adjacent steel pipe sheet pile 12. The overhanging portion 101a is provided with a through hole 16, and the end portion of the tie material 14b passes through the through hole 16 and is fixed to the overhanging portion 101a by the fixing portion 18 including a nut 28 or the like. Yes. The details of the fixing unit 18 will be described in the description of the construction procedure described later.

  The rib plate 102 has a side on the steel pipe sheet pile 12 side that is formed in the same shape as the horizontal cross-sectional shape of the contact plate 101, and is joined to the upper and lower edges of the contact plate 101 by welding or the like on this side. Further, the side opposite to the steel pipe sheet pile 12 of the rib plate 102 has a linear shape, and the fixing unit 18 is accommodated in the space between the upper and lower rib plates 102.

Next, the installation procedure to the steel pipe sheet pile 12 of the urging member 10 will be described.
As shown in FIGS. 3 and 4, the steel pipe sheet piles 12 are connected to each other by a joint 20 such as a two-port (LT) type. First, the tie material 14 b is inserted into the joint 20. The insertion hole 22 is drilled. As described above, since the end portion of the tie material 14b is fixed through the insertion hole 22 and the through hole 16 of the bellows material 10, this portion of the joint 20 is located at a position where the through hole 16 of the bellow material 10 is disposed. The insertion hole 22 is formed. The shape of the insertion hole 22 is perforated in consideration of the diameter and inclination of the tie material 14b so as not to hinder the insertion of the tie material 14b. In the case of drilling work in water, for example, an underwater gas cutting method is used.

  Next, the setting work 40b described with reference to FIG. 5 and the tie material 14b connected from the setting work 40b to the steel pipe sheet pile 12 are set.

  FIG. 8 is a view for explaining the installation procedure of the tie member 40b and the tie material 14b that is connected to the steel pipe sheet pile 12 from the keeper 40b.

  As shown in FIG. 8, since the installation positions of the laying work 40b and the tie material 14b are underground, for example, a shaft 44 is formed from the ground surface position 42 of the laying work 40b to a predetermined depth. By excavating from the shaft 44 to the position of the fixing portion 19 of the steel pipe sheet pile 12 by using an excavator or the like carried into the shaft 44, the buried pipe 46 is installed in the drilled hole and the tie material 14b is inserted. Do. At this time, the end of the tie material 14b on the steel pipe sheet pile 12 side is installed so as to be inserted into the insertion hole 22 and protrude toward the water side (see FIGS. 3 and 4). In addition, these construction work is performed for every tie material 14b installed in the stomach, and the shaft 44 formed by these constructions is backfilled after the completion of all the work.

  Next, the belly raising material 10 described above is installed so that the end portion of the tie material 14b is inserted into the through hole 16, and the bearing plate fixing plate 24 is attached to the end portion of the tie material 14b inserted through the through hole 16. And the bearing plate 26 is installed and fixed with the nut 28. The bearing plate fixing plate 24 has an inclined surface corresponding to the inclination direction of the tie material 14b at the tip side of the tie material 14b, whereby the bearing plate 26 is in close contact with the inclined surface and opposite to the inclined surface. When the tie material 14b is inclined and installed, the stress on the pressure bearing plate 26 can be transmitted to the erection material 10 without difficulty when the side surface is in close contact with the contact plate 101 of the erection material 10. It can be done. At this time, as described above, the fixing portion 18 of the tie material 14b is constructed so as not to protrude beyond the protruding width of the rib plate 102 in the water side direction of the rib member 102.

  After the installation of each of the bellows members 10 is completed, the bellows members 10 are connected to each other using the connection plate 30. First, the connection plate 30 is placed so as to straddle between the rib plates 102 of the adjacent belly raising members 10. Since the connection hole 30 is formed in the connection plate 30 in advance, the connection hole 32 is formed in the rib plate 102 at the same position using a drill or the like based on the connection hole 32. Then, the connection hole 32 between the connection plate 30 and the rib plate 102 is fastened with a bolt or the like. These operations are performed between the upper and lower rib plates 102 of the bellows material and between all the bellows materials 10.

  Finally, the steel pipe sheet pile wall 60 is constructed by sealing the periphery of the drilled through hole with clay cement 34 in order to block the passage of soil and water between the water side and the land side through the steel pipe sheet pile 12.

  According to the belly raising member 10 according to the present embodiment described above, the contact plate 101 is formed in a planar shape and has a protruding portion 101a that protrudes into a valley between adjacent steel pipe sheet piles 12. As a result, the tie material 14b is fixed to the steel pipe sheet pile 12 at the position where the tie material 14b enters the trough, so that the height of the fixing portion 18 protruding from the steel pipe sheet pile 12 can be reduced. As a result, the possibility that an external object such as a hull contacts the fixing unit 18 can be reduced, and the fixing unit 18 can be prevented from being broken or damaged.

  Furthermore, according to the belly raising material 10 according to the present embodiment, the contact plate 101 has the curved portions 101b that are curved from both sides of the overhanging portion 101a with substantially the same curvature as the outer periphery of the steel pipe sheet pile 12, Since stress can be dispersed and transmitted from the tie material 14b to the steel pipe sheet pile 12 in a plane, a large stress is not locally applied to the steel pipe sheet pile 12. Thereby, stress can be sufficiently transmitted to the steel pipe sheet pile 12 while suppressing deformation of the steel pipe sheet pile 12. Further, since the stress can be distributed and transmitted to the steel pipe sheet pile 12, it is not necessary to fill the additional hitting material 56 and the like described in FIG. 7, and the construction cost can be reduced.

  Further, according to the bellows member 10 according to the present embodiment, the rib plate 102 is formed such that the side on the steel pipe sheet pile 12 side has the same shape as the horizontal sectional shape of the contact plate 101, and the upper and lower sides of the contact plate 101 on this side. By being joined to the edge by welding or the like, the cross-sectional performance is improved, and the reaction force applied from the tie material 14b to the contact plate 101 can be effectively resisted.

  Further, since the fixing unit 18 is accommodated in a space between the upper and lower rib plates 102, the rib plate 102 protects the fixing unit 18 from an external object such as a hull. Breakage and damage of the fixing unit 18 can be prevented.

  Moreover, according to the bellows raising material 10 by this embodiment, by providing for every two steel pipe sheet piles 12, it can be sure to contact each outer peripheral side surface of the steel pipe sheet pile 12 with which the bellow raising material 10 is installed continuously. Furthermore, since the adjacent belly raising members 10 are connected to each other by the connection plate 30, the stress between the tie member 14 b and the steel pipe sheet pile 12 can be transmitted evenly and distributed. Thereby, while avoiding a deformation | transformation of the steel pipe sheet pile 12, the support force by each tie material 14b can fully be transmitted to the steel pipe sheet pile 12. FIG.

  In addition, although demonstrated as using the belly raising material 10 by this embodiment when installing the tie material 14b in the side surface of the center part of the steel pipe sheet pile 12, not only this but the tie material 14a is fixed to the steel pipe sheet pile 12. It may also be used.

  Moreover, although the steel pipe sheet pile wall 60 by this embodiment was demonstrated as being used for revetment construction, you may use not only for this but for a retaining wall.

It is a perspective view showing typically the state where the stomach raising material concerning this embodiment was installed in the steel pipe sheet pile. It is an expansion perspective view which shows the installation part of the stomach raising material of FIG. It is the vertical sectional view which cut | disconnected FIG. 1 in the joint part of the steel pipe sheet pile. It is a top view of FIG. It is structural sectional drawing which shows an example of the steel pipe sheet pile wall of a Thai material type used for revetment construction. It is sectional drawing to which the fixing | fixed part of the tie material and steel pipe sheet pile in FIG. 5 was expanded. It is the top view to which the fixing | fixed part of the tie material and steel pipe sheet pile in FIG. 5 was expanded. It is a figure for demonstrating installation of a tie material connected to a steel pipe sheet pile 12 from a temporary work and a temporary work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Raising material 11 Raising 12 Steel pipe sheet pile 14a, 14b Tie material 16 Through hole 18, 19 Fixing part 20 Joint 22 Insertion hole 24 Bearing plate fixing plate 26 Bearing plate 28 Nut 30 Connection plate 32 Connecting hole 60 Steel sheet pile wall 101 Contact plate 101a Overhang portion 101b Curved portion 102 Rib plate

Claims (7)

Contact from the water side to a plurality of steel pipe sheet piles placed sequentially, have a contact plate extending in the horizontal direction, you support the plurality of steel pipe sheet pile end portion of the tensile reinforcing material is fixed abdomen A raising material,
The contact plate has a projecting portion that projects so as to enter a trough between adjacent steel pipe sheet piles, and the tensile reinforcing material is fixed to the projecting portion. Steel pipe sheet pile upset material. The said contact plate is provided with the curved part which contact | abuts the outer periphery of the said steel pipe sheet pile on both sides of the said overhang | projection part, The steel sheet pile sheet upset material of Claim 1 characterized by the above-mentioned. A protective portion for protecting a fixing portion to which one end of the tensile reinforcement is fixed;
The protection portion is a rib plate that is provided on at least one of an upper edge and a lower edge of the contact plate and protrudes to the one end side of the tensile reinforcing material larger than a protrusion length of the fixing portion. The steel sheet pile sheet upset according to claim 1 or 2, characterized in that A bellows of a steel pipe sheet pile, wherein the bellows raising material according to any one of claims 1 to 3 is provided between the plurality of steel pipe sheet piles, and adjacent belly raising materials are connected to each other. 5. The steel pipe sheet pile upset according to claim 4 , wherein the upset material is provided for each of the two steel pipe sheet piles. A steel pipe sheet pile supported by using the erection of claim 4 or 5 . A steel pipe sheet pile construction method,
While continuously placing a plurality of steel pipe sheet piles, connecting adjacent steel pipe sheet piles with a joint,
Forming an insertion hole in the joint,
Insert one end of the tensile reinforcement with the other end connected to the backer through the insertion hole,
One end of the tensile reinforcement member which is installed so that the overhanging part may enter the valley part between the adjacent steel pipe sheet piles, and the urging member according to any one of claims 1 to 3. Fixing the part to the overhanging part,
A method comprising connecting adjacent bell lining materials.

Images