EP2924169B1 - Joint structure of steel-pipe pile, and steel-pipe pile - Google Patents
Joint structure of steel-pipe pile, and steel-pipe pile Download PDFInfo
- Publication number
- EP2924169B1 EP2924169B1 EP13857558.4A EP13857558A EP2924169B1 EP 2924169 B1 EP2924169 B1 EP 2924169B1 EP 13857558 A EP13857558 A EP 13857558A EP 2924169 B1 EP2924169 B1 EP 2924169B1
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- EP
- European Patent Office
- Prior art keywords
- pipe pile
- steel
- external fitting
- convex portions
- axial direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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- 238000005452 bending Methods 0.000 description 32
- 230000007547 defect Effects 0.000 description 16
- 238000003754 machining Methods 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Definitions
- a gear-type joint structure of a steel-pipe pile is used, and although this joint structure is based on the screw type, the problems of a screw-type joint structure of a steel-pipe pile are solved.
- a plurality of outward engagement convex portions are provided along an axial direction in a male side end portion of a steel-pipe pile, and a plurality of inward engagement convex portions are provided along the axial direction in a female side end portion of the steel-pipe pile.
- the engagement convex portions are intermittently provided in the circumferential direction of the steel-pipe pile, and thus, are provided in a row in the axial direction. Accordingly, a cross-sectional defect occurs when viewed in the axial direction, and the bending load and the tension load which can be transmitted to the engagement convex portion are decreased by the cross-sectional defect. Therefore, in the joint structure of a steel-pipe pile disclosed in Patent Document 3, in order to withstand a predetermined bending load and tension load, it is necessary to use the engagement convex portion enlarged by the cross-sectional defect when viewed in the axial direction, and it is necessary to increase the number of steps of the engagement convex portion in the axial direction. Accordingly, there is a problem that machining costs and the cost of materials in the joint structure of the steel-pipe pile increase.
- the present invention is made in consideration of the above-described problems, and an object thereof is to provide a joint structure of a steel-pipe pile and a steel-pipe pile in which an increase in labor for rotation of the steel-pipe pile at a work site is prevented, an excessive increase in a plate thickness of the steel-pipe pile is avoided, and there is no concern of damage even when the bending load is applied.
- the present invention adopts the following measures.
- the loads transmitted from the external fitting convex portions and the internal fitting convex portions to a main body of the steel-pipe pile can be uniform in the circumferential direction, and an increase in a plate thickness of the steel-pipe pile can be avoided. Therefore, it is possible to avoid a case where the cost of materials of the joint structure is increased.
- any external fitting convex portion of the plurality of rows and any internal fitting convex portion of the plurality of rows can be accurately disposed on a portion corresponding to the outermost edge end portion of the steel-pipe pile at which tensile stress becomes the maximum. Accordingly, the bending load can be accurately applied to any external fitting convex portion and any internal fitting convex portion, and it is possible to avoid a case where the external fitting end portion and the internal fitting end portion are damaged.
- the upper steel-pipe pile in two step portions adjacent to each other in the axial direction of the steel-pipe pile, since the external fitting convex portions of the one step portion and the external fitting groove portions of the other step portion are provided to be adjacent to each other in the radial direction of the steel-pipe pile when viewed in the axial direction of the steel-pipe pile, the upper steel-pipe pile can be inserted into the lower steel-pipe pile while the external fitting convex portions and the internal fitting convex portions do not interfere with each other.
- the external fitting convex portions provided in each of the plurality of step portions are formed to fill gaps along the circumferential direction when viewed in the axial direction of the steel-pipe pile, contact areas between the external fitting convex portions and the internal fitting convex portions are maximized, and load bearing capacity with respect to the tensile load and the bending load can be increased.
- the plate thickness of the steel-pipe pile is thickened in stages along the axial direction from the outer side (upper side) in the axial direction of the lower steel-pipe pile toward the inner side (lower side) in the axial direction, and from the outer side (lower side) in the axial direction of the upper steel-pipe pile toward the inner side (upper side) in the axial direction, and thus, a plurality of step portions are formed. Accordingly, a structure in which the plate thickness of the steel-pipe pile is increased in stages according to the number of steps of the external fitting convex portions and the internal fitting convex portions in the axial direction can be easily realized.
- the tip portion of the external fitting end portion and the internal fitting edge of the internal fitting end portion abut each other, and thus, complete fitting between the external fitting end portion and the internal fitting end portion can be visually confirmed from the outside.
- the third tapered portion abuts the first tapered portion
- the fourth tapered portion abuts the second tapered portion, and thus, the internal fitting convex portion can smoothly move in the circumferential direction on the external fitting engagement groove, and the external fitting end portion and the internal fitting end portion can be easily fitted together.
- the internal fitting convex portion is locked by the locking portion formed on the external fitting engagement groove, an excessive rotation of the steel-pipe pile can be prevented.
- the joint structure 1 of a steel-pipe pile according to the first embodiment is used to connect (join) a lower steel-pipe pile 2 (first steel-pipe pile) and an upper steel-pipe pile 3 (second steel-pipe pile) along an axial direction X.
- the joint structure 1 includes an external fitting end portion 20 provided on an upper end (opening end) of the lower steel-pipe pile 2, and a column shaped internal fitting end portion 30 provided on a lower end (one end) of the upper steel-pipe pile 3.
- the internal fitting end portion 30 of the upper steel-pipe pile 3 is fitted to the external fitting end portion 20 of the lower steel-pipe pile 2 which is buried under the ground.
- two external fitting step portions 29 (29a and 29b) arranged in the axial direction X of the lower steel-pipe pile 2 are provided on the external fitting end portion 20
- two internal fitting step portions 39 (39a and 39b) arranged in the axial direction X of the upper steel-pipe pile 3 are provided on the internal fitting end portion 30.
- Each external fitting step portion 29 (29a and 29b) includes a plurality of external fitting convex portions 21 which are formed to protrude toward a center side (an inner side in a radial direction) in an axis orthogonal direction Y (a direction (radial direction) orthogonal to the axial direction X: refer to FIG.
- the external fitting convex portion 21 of the first external fitting step portion 29a has a thickness having a predetermined width t1 in the axis orthogonal direction Y on the outer side (upper side) in the axial direction X of the lower steel-pipe pile 2.
- the external fitting engagement groove 23 is formed on the inner side (lower side) in the axial direction X of the lower steel-pipe pile 2 from the external fitting convex portions 21 and the external fitting groove portions 22, and has a predetermined height in the axial direction X of the lower steel-pipe pile 2 and approximately the same thickness as the external fitting groove portion 22 in the axis orthogonal direction Y.
- the external fitting convex portions 21 are formed on the first external fitting step portion 29a on the outer side (upper side) in the axial direction X of the lower steel-pipe pile 2, and the second external fitting step portion 29b adjacent to the first external fitting step portion 29a on the inner side (lower side) in the axial direction X of the lower steel-pipe pile 2 from the first external fitting step portion 29a.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b are formed at positions which deviate in the axial direction X.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b are formed at positions different from each other in the axial direction X.
- the external fitting convex portions 21 are not limited to the above, and for example, as shown in FIG. 4B , the external fitting convex portions 21 of the second external fitting step portion 29b may be formed at partial positions adjacent to the external fitting groove portions 22 formed on the first external fitting step portion 29a in the axis orthogonal direction Y when viewed in the axial direction.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b may be alternately formed with gaps in the circumferential direction Z when viewed in the axial direction.
- the first tapered portion 21 a has a predetermined height h in the axial direction X of the lower steel-pipe pile 2.
- the second tapered portion 23a extends in a portion facing the first tapered portion 21a in the axial direction X of the lower steel-pipe pile 2 and extends to the entire portion positioned below the external fitting groove portion 22.
- the second tapered portion 23a is not limited to the above, and for example, as shown in FIG. 5 , the second tapered portion may extend to an intermediate portion 23c positioned below the external fitting groove portion 22.
- the first tapered portion 21a and the second tapered portion 23a are linearly formed on the external fitting convex portion 21 and the external fitting engagement groove 23.
- first tapered portion 21a and the second tapered portion 23a may be formed to be inclined in an arc shape on the external fitting convex portion 21 and the external fitting engagement groove 23.
- first tapered portion 21a and the second tapered portion 23a may be separately formed with respect to the external fitting convex portion 21 and the external fitting engagement groove 23.
- an internal fitting edge 38 which is formed to protrude toward the outer side in the axis orthogonal direction Y of the upper steel-pipe pile 3, is formed on the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3 from the two internal fitting step portions 39 (39a and 39b).
- the internal fitting end portion 30 includes a plurality of internal fitting convex portions 31 which are formed to protrude toward the outer side in an axis orthogonal direction Y of the upper steel-pipe pile 3 on an outer wall surface (outer circumferential surface) of the internal fitting end portion 30, a plurality of internal fitting groove portions 32 which are formed among the plurality of internal fitting convex portions 31, and an internal fitting engagement groove 33 which is formed on the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3 from the plurality of internal fitting convex portions 31 and the plurality of internal fitting groove portions 32.
- a plate thickness of the upper steel-pipe pile 3 is thickened in stages in the axial direction X and the internal fitting step portion 39 is formed so that the internal fitting groove portions 32 of the first internal fitting step portion 39a in the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3, and the internal fitting convex portions 31 of the second internal fitting step portion 39b in the outer side (lower side) in the axial direction X of the upper steel-pipe pile 3 have approximately the same thickness in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- the internal fitting engagement groove 33 of the first internal fitting step portion 39a has a space having a predetermined width t2 in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- each internal fitting step portion 39 39 (39a and 39b)
- the internal fitting convex portion 31 is formed to protrude in an approximately rectangular shape in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- the internal fitting groove portions 32 are formed among the plurality of internal fitting convex portions 31, and each internal fitting groove portion has a predetermined width in a circumferential direction Z of the upper steel-pipe pile 3.
- the internal fitting engagement groove 33 is formed on the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3 from the internal fitting convex portions 31 and the internal fitting groove portions 32, and is formed so that the width t2 (refer to FIG.
- the internal fitting engagement groove 33 has a predetermined height in the axial direction X of the upper steel-pipe pile 3 and approximately the same thickness as the internal fitting groove portion 32 in the axis orthogonal direction Y.
- the internal fitting convex portions 31 are formed on the first internal fitting step portion 39a on the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3, and the second internal fitting step portion 39b adjacent to the first internal fitting step portion 39a on the outer side (lower side) in the axial direction X of the upper steel-pipe pile 3 from the first internal fitting step portion 39a.
- the internal fitting convex portions 31 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b are formed at positions which deviate in the axial direction X.
- the internal fitting convex portions 31 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b are formed at positions different from each other in the axial direction X.
- the internal fitting convex portions 31 of the second internal fitting step portion 39b are formed at all positions adjacent to the internal fitting groove portions 32 formed on the first internal fitting step portion 39a in the axis orthogonal direction Y when viewed in the axial direction. Accordingly, the internal fitting convex portions 31 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b are alternately formed without gaps in the circumferential direction Z when viewed in the axial direction.
- the internal fitting convex portions 31 are not limited to the above, and for example, as shown in FIG. 8B , the internal fitting convex portions 31 of the second internal fitting step portion 39b may be formed at partial positions adjacent to the internal fitting groove portions 32 formed on the first internal fitting step portion 39a in the axis orthogonal direction Y when viewed in the axial direction.
- the internal fitting convex portions 31 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b may be alternately formed with gaps in the circumferential direction Z when viewed in the axial direction.
- the internal fitting convex portion 31 includes a third tapered portion 31a which is linearly inclined in the circumferential direction Z of the upper steel-pipe pile 3 to abut the first tapered portion 21a shown in FIG. 5 and to be approximately parallel with the first tapered portion 21a on the upper end surface in the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3.
- the internal fitting convex portion 31 includes a fourth tapered portion 31b which is linearly inclined in the circumferential direction Z of the upper steel-pipe pile 3 to abut the second tapered portion 23a shown in FIG. 5 and to be approximately parallel with the second tapered portion 23a and the third tapered portion 31a on the lower end surface in the outer side (lower side) in the axial direction X of the upper steel-pipe pile 3.
- the third tapered portion 31a and the fourth tapered portion 31b have a predetermined height h in the axial direction X of the upper steel-pipe pile 3. Moreover, as described above, the third tapered portion 31a and the fourth tapered portion 31b are linearly formed on the internal fitting convex portion 31. However, the third tapered portion 31a and the fourth tapered portion 31b may be formed to be inclined in an arc shape on the internal fitting convex portion 31. In addition, the third tapered portion 31a and the fourth tapered portion 31b may be separately formed with respect to the internal fitting convex portion 31.
- FIGS. 11 and 12 the internal fitting end portion 30 of the upper steel-pipe pile 3 is inserted into the external fitting end portion 20 of the lower steel-pipe pile 2 along the axial direction X.
- FIG. 11 is a view showing a state where the internal fitting end portion 30 is inserted into the external fitting end portion 20
- FIG. 12 is a view showing a state where the internal fitting end portion 30 is further inserted into the external fitting end portion 20 from the state of FIG. 11 .
- FIGS. 11 is a view showing a state where the internal fitting end portion 30 is inserted into the external fitting end portion 20 from the state of FIG. 11 .
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting groove portions 22 of the second external fitting step portion 29b are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the lower steel-pipe pile 2
- the internal fitting groove portions 32 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- the lower steel-pipe pile 2 and the upper steel-pipe pile 3 are relatively rotated in the circumferential direction Z around the axis. Accordingly, as shown in FIGS. 16 and 17 , the internal fitting convex portions 31 move to portions under the external fitting convex portions 21 along the circumferential direction Z and engage with the external fitting convex portions 21 in the axial direction X. In this way, the external fitting end portion 20 of the lower steel-pipe pile 2 and the internal fitting end portion 30 of the upper steel-pipe pile 3 are fitted together.
- first tapered portion 21a and the second tapered portion 23 a shown in FIG. 5 and the third tapered portion 31a and the fourth tapered portion 31b shown in FIG. 9 have the predetermined height h in the axial direction X of the lower steel-pipe pile 2 and the upper steel-pipe pile 3.
- the height h is set to be approximately the same as the height of the gap d which is formed between the tip portion 28 of the external fitting end portion 20 and the internal fitting edge 38 of the internal fitting end portion 30.
- the third tapered portion 31a (refer to FIG. 9 ) abuts the first tapered portion 21a (refer to FIG. 5 ), and the fourth tapered portion 31b (refer to FIG. 9 ) abuts the second tapered portion 23a (refer to FIG. 5 ), and thus, the internal fitting convex portion 31 of the upper steel-pipe pile 3 moves in the circumferential direction Z on the external fitting engagement groove 23 of the lower steel-pipe pile 2.
- the lower steel-pipe pile 2 and the upper steel-pipe pile 3 approach each other in the axial direction X, and thus, the tip portion 28 of the external fitting end portion 20 and the internal fitting edge 38 of the internal fitting end portion 30 abut each other to fill the gap d.
- a feeler gauge abuts the gap d, and the fitting between the external fitting end portion 20 and the internal fitting end portion 30 may be confirmed according to whether or not the feeler gauge passes through the gap d.
- whether or not the external fitting end portion 20 and the internal fitting end portion 30 are fitted together can be more accurately determined.
- the external fitting convex portions 21 formed on the first external fitting step portion 29a and the external fitting convex portions 21 formed on the second external fitting step portion 29b are provided at positions which deviate in the axial direction X. Accordingly, in the joint structure 1 of a steel-pipe pile, the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be connected together without a cross-sectional defect when viewed in the axial direction.
- the loads transmitted from the external fitting convex portion 21 and the internal fitting convex portion 31 to the main bodies of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be uniform in the circumferential direction Z, and thus, increases in the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be avoided. Accordingly, it is possible to avoid a case where the costs of materials of the joint structure between the lower steel-pipe pile 2 and the upper steel-pipe pile 3 is increased.
- each of the external fitting convex portions 21 and the internal fitting convex portions 31 is formed in one step (one row), and the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 are sufficient if the plate has load bearing capacity with respect to the bending load and the tension load by the one step.
- the second external fitting step portion 29b and the second internal fitting step portion 39b the number of steps (the number of rows) of the external fitting convex portion 21 and the internal fitting convex portion 31 increases, and it is necessary to set the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 according to the increase in the number of steps.
- the cross-sectional defect does not occur when viewed in the axial direction, and the loads transmitted from the external fitting convex portions 21 and the internal fitting convex portions 31 to the main bodies of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be uniform in the circumferential direction.
- the plate thickness of the lower steel-pipe pile 2 is thickened in stages in the axial direction X and the external fitting step portion 29 is formed so that the external fitting convex portions 21 of the first external fitting step portion 29a in the outer side (upper side) in the axial direction X of the lower steel-pipe pile 2, and the external fitting groove portions 22 of the second external fitting step portion 29b in the inner side (lower side) in the axial direction X of the lower steel-pipe pile 2 from the first external fitting step portion 29a have approximately the same thickness in the axis orthogonal direction Y of the lower steel-pipe pile 2, and the external fitting convex portions 21 of the second external fitting step portion 29b, and the external fitting groove portions 22 of the third external fitting step portion 29c in the inner side (lower side) in the axial direction X of the lower steel-pipe pile 2 from the second external fitting step portion 29b have approximately the same thickness in the axis orthogonal direction Y of the lower steel-pipe pile 2.
- the external fitting convex portions 21 formed on the first external fitting step portion 29a and the external fitting convex portions 21 formed on the second external fitting step portion 29b are provided at positions which deviate in the axial direction X.
- the external fitting convex portions 21 formed on the second external fitting step portion 29b and the external fitting convex portions 21 formed on the third external fitting step portion 29c are provided at positions which deviate in the axial direction X.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b are alternately formed with gaps in the circumferential direction Z when viewed in the axial direction
- the external fitting convex portions 21 of the second external fitting step portion 29b and the external fitting convex portions 21 of the third external fitting step portion 29c are alternately formed with gaps in the circumferential direction Z when viewed in the axial direction.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting groove portions 22 of the second external fitting step portion 29b are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the lower steel-pipe pile 2
- the internal fitting groove portions 32 of the first internal fitting step portion 39a and the internal fitting convex portions 31 of the second internal fitting step portion 39b are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- the external fitting convex portions 21 of the second external fitting step portion 29b and the external fitting groove portions 22 of the third external fitting step portion 29c are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the lower steel-pipe pile 2
- the internal fitting groove portions 32 of the second internal fitting step portion 39b and the internal fitting convex portions 31 of the third internal fitting step portion 39c are formed to all have approximately the same thicknesses in the axis orthogonal direction Y of the upper steel-pipe pile 3.
- the lower steel-pipe pile 2 and the upper steel-pipe pile 3 are relatively rotated in the circumferential direction Z around the axis. Accordingly, as shown in FIGS. 26 and 27 , the internal fitting convex portions 31 move in the circumferential direction Z in the external fitting engagement groove 23 to portions under the external fitting convex portions 21. Moreover, the internal fitting convex portions 31 engage with the external fitting convex portions 21 in the axial direction X, and the external fitting end portion 20 of the lower steel-pipe pile 2 and the internal fitting end portion 30 of the upper steel-pipe pile 3 are fitted together.
- the tip portion 28 of the external fitting end portion 20 and the internal fitting edge 38 of the internal fitting end portion 30 abut each other to fill the gap d. Accordingly, whether or not the external fitting end portion 20 of the lower steel-pipe pile 2 and the internal fitting end portion 30 of the upper steel-pipe pile 3 are completely fitted together can be determined by visually confirming the gap d from the outside.
- the feeler gauge abuts the gap d, and the fitting between the external fitting end portion 20 and the internal fitting end portion 30 may be confirmed according to whether or not the feeler gauge passes through the gap d.
- whether or not the external fitting end portion 20 and the internal fitting end portion 30 are fitted together can be more accurately determined.
- the third tapered portion 31a (refer to FIG. 9 ) abuts the first tapered portion 21a (refer to FIG. 5 ), and the fourth tapered portion 31b (refer to FIG. 9 ) abuts the second tapered portion 23a (refer to FIG. 5 ), and thus, the internal fitting convex portion 31 of the upper steel-pipe pile 3 can smoothly move in the circumferential direction Z on the external fitting engagement groove 23 of the lower steel-pipe pile 2. Accordingly, the external fitting end portion 20 of the lower steel-pipe pile 2 and the internal fitting end portion 30 of the upper steel-pipe pile 3 can be easily fitted together. In addition, the internal fitting convex portion 31 is locked to the locking portion 23b (refer to FIG. 5 ) of the external fitting engagement groove 23, and thus, it is possible to prevent the upper steel-pipe pile 3 from being rotated more than necessary.
- the internal fitting convex portions 31 of the first internal fitting step portion 39a engage with the external fitting convex portions 21 of the first external fitting step portion 29a
- the internal fitting convex portions 31 of the second internal fitting step portion 39b engage with the external fitting convex portions 21 of the second external fitting step portion 29b
- the internal fitting convex portions 31 of the third internal fitting step portion 39c engage with the external fitting convex portions 21 of the third external fitting step portion 29c.
- the bending load and the tension load are transmitted to the main body of the steel-pipe pile.
- the loads transmitted from the external fitting convex portion 21 and the internal fitting convex portion 31 to the main bodies of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be uniform in the circumferential direction Z, and thus, increases in the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 can be avoided. Accordingly, it is possible to avoid a case where the cost of materials of the joint structure between the lower steel-pipe pile 2 and the upper steel-pipe pile 3 is increased.
- the external fitting convex portions 21 and the internal fitting convex portions 31 are formed in one step (one row), and the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 are sufficient if the plate has load bearing capacity with respect to the bending load and the tension load by the one step.
- the number of steps (the number of rows) of the external fitting convex portion 21 and the internal fitting convex portion 31 increases in the second external fitting step portion 29b and the second internal fitting step portion 39b
- the number of steps of the external fitting convex portion 21 and the internal fitting convex portion 31 increases in the third external fitting step portion 29c and the third internal fitting step portion 39c, and thus, it is necessary to set the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 according to the increase in the number of steps.
- the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 are thickened in stages from the outer side (upper side) toward the inner side (lower side) in the axial direction X of the lower steel-pipe pile 2 and from the outer side (lower side) toward the inner side (upper side) in the axial direction X of the upper steel-pipe pile 3, and the external fitting step portion 29 and the internal fitting step portion 39 are formed. Accordingly, also in the second embodiment, the structure in which the plate thicknesses of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 increase in stages according to the number of steps of the external fitting convex portions 21 and the internal fitting convex portions 31 can be easily realized.
- the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b are provided at positions which deviate in the axial direction X
- the external fitting convex portions 21 of the second external fitting step portion 29b and the external fitting convex portions 21 of the third external fitting step portion 29c are provided at positions which deviate in the axial direction X.
- the external fitting convex portions 21 of any of the first external fitting step portion 29a, the second external fitting step portion 29b, and the third external fitting step portion 29c, and the internal fitting convex portions 31 of any of the first internal fitting step portion 39a, the second internal fitting step portion 39b, and the third internal fitting step portion 39c can be accurately disposed at the portions corresponding to the outermost edge ends of the lower steel-pipe pile 2 and the upper steel-pipe pile 3 at which the tensile stress is maximized.
- the bending load is accurately applied to any of the external fitting convex portions 21 and any of the internal fitting convex portions 31, and it is possible to avoid a case where the external fitting end portion 20 of the lower steel-pipe pile 2 and the internal fitting end portion 30 of the upper steel-pipe pile 3 are damaged.
- the present invention is not limited to the above, and for example, the external fitting convex portions 21 of the first external fitting step portion 29a and the external fitting convex portions 21 of the second external fitting step portion 29b may be provided at positions which deviate in the axial direction X, and the external fitting convex portions 21 of the second external fitting step portion 29b and the external fitting convex portions 21 of the third external fitting step portion 29c are provided at positions matched in the axial direction X. Also in this case, the cross-sectional defect does not occur when viewed in the axial direction, and the loads transmitted from the external fitting convex portions 21 and the internal fitting convex portions 31 to the main body of a steel-pipe pile can be uniform in the circumferential direction.
- the external fitting convex portions 21 of one external fitting step portion 29 and the external fitting groove portion 22 of the other external fitting step portion 29 may be provided to be adjacent in the axis orthogonal direction Y when viewed in the axial direction X.
- the first embodiment shows the case in which the number of steps in each of the external fitting step portion 29 and the internal fitting step portion 39 is two
- the second embodiment shows the case in which the number of steps in each of the external fitting step portion 29 and the internal fitting step portion 39 is three.
- the number of steps is two.
- the thicknesses in the inner sides in the axial direction X can be thinned while the thicknesses of the tip portions (the outer sides in the axial direction X) of the external fitting step portion and the internal fitting step portion are maintained in certain thicknesses or more. Accordingly, the increase in the cost of materials due to the increase in the plate thickness of the steel-pipe pile can be prevented.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012255304 | 2012-11-21 | ||
PCT/JP2013/080748 WO2014080824A1 (ja) | 2012-11-21 | 2013-11-14 | 鋼管杭の継手構造、及び鋼管杭 |
Publications (3)
Publication Number | Publication Date |
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EP2924169A1 EP2924169A1 (en) | 2015-09-30 |
EP2924169A4 EP2924169A4 (en) | 2016-07-27 |
EP2924169B1 true EP2924169B1 (en) | 2017-06-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP13857558.4A Not-in-force EP2924169B1 (en) | 2012-11-21 | 2013-11-14 | Joint structure of steel-pipe pile, and steel-pipe pile |
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Country | Link |
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EP (1) | EP2924169B1 (ja) |
JP (1) | JP5811289B2 (ja) |
CN (1) | CN104508210B (ja) |
HK (1) | HK1207133A1 (ja) |
IN (1) | IN2014DN11226A (ja) |
SG (1) | SG11201408621VA (ja) |
TW (1) | TWI541448B (ja) |
WO (1) | WO2014080824A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015086619A (ja) * | 2013-10-31 | 2015-05-07 | シントク工業株式会社 | 鋼管杭接続構造 |
TW201608084A (zh) * | 2014-07-24 | 2016-03-01 | 新日鐵住金股份有限公司 | 鋼管樁之接頭構造 |
JP6439596B2 (ja) * | 2014-07-24 | 2018-12-19 | 新日鐵住金株式会社 | 鋼管杭の継手構造 |
AU2016360218B2 (en) * | 2015-11-27 | 2019-05-02 | Nippon Steel Corporation | Joint structure for steel pipe pile |
CN105544527A (zh) * | 2015-12-14 | 2016-05-04 | 中铁大桥局第七工程有限公司 | 一种带有拆卸式刃脚的钢管桩 |
EP3433499A4 (en) * | 2016-03-24 | 2019-11-27 | Archi Enterprises Inc. | MODULAR SUPPLY SYSTEM |
CN106015238B (zh) * | 2016-06-02 | 2019-01-22 | 北京航空航天大学 | 具有容错特性的旋转驱动对接机构 |
CN106703020A (zh) * | 2016-12-30 | 2017-05-24 | 重庆中材参天建材有限公司 | 超长水下桩基础用可回收的标准钢护筒 |
JP6897514B2 (ja) * | 2017-11-14 | 2021-06-30 | 日本製鉄株式会社 | 鋼管杭の継手構造 |
CN108999342B (zh) * | 2018-09-11 | 2023-06-20 | 深圳大学 | 预制模块化装配式框架结构柱-柱连接节点及制作方法 |
CN109610448A (zh) * | 2018-10-15 | 2019-04-12 | 板垣次男 | 钢管桩连接套结构 |
CN109914421A (zh) * | 2019-03-01 | 2019-06-21 | 华北水利水电大学 | 一种基坑边坡加固用可回收微型桩钢管及其施工方法 |
CN110438982A (zh) * | 2019-08-12 | 2019-11-12 | 中国建筑第二工程局有限公司 | 一种管桩端板以及管桩连接方法 |
CN111411738B (zh) * | 2020-03-26 | 2021-08-31 | 上海市房屋建筑设计院有限公司 | 一种定制波形钢管柱 |
CN111677024B (zh) * | 2020-06-19 | 2021-04-20 | 南京工业大学 | 一种可回收的螺旋钢管桩自平衡测试装置 |
CN112253530B (zh) * | 2020-10-30 | 2022-08-05 | 重庆水泵厂有限责任公司 | 互锁式定位结构与平衡鼓轴向定位方法 |
CN112282208B (zh) * | 2020-11-06 | 2022-01-25 | 安徽军瑶新型材料有限公司 | 一种装配建筑的组装梁结构及其生产方法 |
CN219175212U (zh) * | 2022-03-24 | 2023-06-13 | 昊恒(福建)建材科技有限公司 | 钢结构套管 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2800656B2 (ja) | 1993-09-14 | 1998-09-21 | 日本鋼管株式会社 | 地すべり抑止用鋼管杭 |
JP3755966B2 (ja) * | 1997-07-29 | 2006-03-15 | 株式会社クボタ | 杭の継手部構造 |
JPH1143936A (ja) * | 1997-07-29 | 1999-02-16 | Kubota Corp | 杭の継手部構造 |
JP3775959B2 (ja) | 1999-01-08 | 2006-05-17 | 株式会社クボタ | 杭及び杭接続構造 |
JP3896318B2 (ja) * | 2002-09-03 | 2007-03-22 | Jfeスチール株式会社 | 鋼管杭接続構造 |
JP5391941B2 (ja) * | 2009-09-04 | 2014-01-15 | Jfeスチール株式会社 | 鋼管コンクリート複合杭及び該鋼管コンクリート複合杭の継手構造 |
NL2004010C2 (nl) * | 2009-12-23 | 2011-06-27 | Ihc Holland Ie Bv | Koppeling voor het losmaakbaar koppelen van buizen. |
JP2012117233A (ja) * | 2010-11-30 | 2012-06-21 | Sansui Co Ltd | 鋼管杭の継手構造および継手付き鋼管杭 |
CN202227334U (zh) * | 2011-10-09 | 2012-05-23 | 中建七局第三建筑有限公司 | 承插式钢管桩接头 |
-
2013
- 2013-11-14 EP EP13857558.4A patent/EP2924169B1/en not_active Not-in-force
- 2013-11-14 WO PCT/JP2013/080748 patent/WO2014080824A1/ja active Application Filing
- 2013-11-14 IN IN11226DEN2014 patent/IN2014DN11226A/en unknown
- 2013-11-14 SG SG11201408621VA patent/SG11201408621VA/en unknown
- 2013-11-14 JP JP2014548535A patent/JP5811289B2/ja not_active Expired - Fee Related
- 2013-11-14 CN CN201380040518.1A patent/CN104508210B/zh not_active Expired - Fee Related
- 2013-11-15 TW TW102141725A patent/TWI541448B/zh not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
CN104508210B (zh) | 2016-12-14 |
JPWO2014080824A1 (ja) | 2017-01-05 |
JP5811289B2 (ja) | 2015-11-11 |
IN2014DN11226A (ja) | 2015-10-02 |
SG11201408621VA (en) | 2015-01-29 |
HK1207133A1 (en) | 2016-01-22 |
TW201435224A (zh) | 2014-09-16 |
TWI541448B (zh) | 2016-07-11 |
EP2924169A4 (en) | 2016-07-27 |
CN104508210A (zh) | 2015-04-08 |
EP2924169A1 (en) | 2015-09-30 |
WO2014080824A1 (ja) | 2014-05-30 |
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