JP4693299B2 - Column base connection structure - Google Patents

Column base connection structure Download PDF

Info

Publication number
JP4693299B2
JP4693299B2 JP2001241845A JP2001241845A JP4693299B2 JP 4693299 B2 JP4693299 B2 JP 4693299B2 JP 2001241845 A JP2001241845 A JP 2001241845A JP 2001241845 A JP2001241845 A JP 2001241845A JP 4693299 B2 JP4693299 B2 JP 4693299B2
Authority
JP
Japan
Prior art keywords
column
rod
foundation
steel pipe
support
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.)
Active
Application number
JP2001241845A
Other languages
Japanese (ja)
Other versions
JP2003055984A (en
Inventor
丈史 槙枝
哲也 菅野
正裕 鈴木
Original Assignee
旭化成建材株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 旭化成建材株式会社 filed Critical 旭化成建材株式会社
Priority to JP2001241845A priority Critical patent/JP4693299B2/en
Publication of JP2003055984A publication Critical patent/JP2003055984A/en
Application granted granted Critical
Publication of JP4693299B2 publication Critical patent/JP4693299B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a column base connection structure in which a leg portion of a building and a foundation structure are connected, and in particular, in a column base connection structure of a medium- and low-rise steel structure, a state where rigidity against rotational deformation of the column base is low. It is related with the column base connection structure which connected the leg part of the column and the foundation structure.
[0002]
[Prior art]
Conventionally, as a method of fixing a steel column leg to a foundation structure formed of reinforced concrete or the like, it is common to fix a base plate fixed to a column lower end to an anchor bolt or the like embedded in the foundation structure. .
[0003]
In general, the base plate projects largely around the periphery of the column base, and the anchor bolts are arranged substantially evenly with respect to the cross section of the column material on the surface of the projecting base plate.
[0004]
According to such a column base connection structure, even if the column leg is rotated by an external force such as an earthquake, the anchor bolt pulls in the lifting direction of the base plate, and the foundation structure compresses in the sinking direction of the base plate. A large rotational resistance is generated, and the deformation of the upper steel frame can be suppressed.
[0005]
Such a conventional column base connection structure has the feature that the deformation at the time of a middle earthquake can be reduced even if the cross section of the column material or the upper beam material is small, but the column base part is not in a large earthquake. There is also a risk of plasticizing and breaking.
[0006]
In such cases, the anchor bolts and base plate of the column base connecting part are made strong and the lower end of the column material is plasticized to improve safety, or the anchor bolt is anchored using a steel material with good elongation performance. It is conceivable that even if the bolt is plasticized, it is difficult to break, but in any case, there is a problem that a high-level design technique and a large connecting member are required.
[0007]
In addition, when the column and the foundation pile are rigidly connected, the bending moment is transmitted as it is from the column to the foundation pile due to the shaking of the earthquake, and the foundation pile must bear the bending moment. There is a problem that the piles need to be enlarged or arranged in parallel, and the foundation pile work requires a lot of labor and work period, and the construction cost increases.
[0008]
Further, a column base connection structure disclosed in Japanese Patent No. 3150987 has been proposed as a structure in which the connection state of the column base is made as small as possible with respect to rotational deformation. Specifically, the anchor bolts embedded in the concrete connected to the foundation pile are arranged on the four sides of the square steel pipe column, and the base plate fixed to the legs of the square steel pipe column is attached to the anchor bolt with a nut. It is fixed.
[0009]
With such a structure, the anchor bolts embedded in the concrete connected to the foundation pile as in the prior art are arranged on the outer periphery of the square steel pipe column, and the base plate fixed to the legs of the square steel pipe column is attached to the base plate. Compared with the case where the anchor bolt is fixed with a nut, the anchor bolt is closer to the column core, so that the rigidity against the rotational deformation of the column base can be reduced, and this causes the bending moment that the foundation pile bears. It is possible to reduce the labor, the construction period, or the construction cost for the foundation work by reducing the cost and the basic structure.
[0010]
[Problems to be solved by the invention]
However, it cannot be said that the above-described configuration in which the rigidity with respect to the rotational deformation of the column base is further reduced, and a configuration in which the rigidity with respect to the rotational deformation of the column base is further reduced is desired.
[0011]
The base plate at the lower end of the column needs to be rotated in order for the column leg to rotate and deform. However, in the above configuration, the anchor bolts are arranged on the lines of the four sides of the square steel pipe column in the sinking direction and the lifting direction of the base plate. For this reason, since the overhang of the base plate is small, the resistance is low, and the rotation occurs due to the compressive deformation of the concrete or the bending deformation of the base plate.
[0012]
However, since the upper surface of the foundation structure is located on the lower surface side of the base plate and there is a distance from the column core to the side of the square steel pipe column, it is difficult to quantitatively expect large rotational deformation.
[0013]
The present invention solves the above-mentioned problems, and the object of the present invention is to quantitatively expect a large rotational deformation of the column base, which is easy to manufacture at the factory and excellent in workability at the construction site. It is intended to provide a column base connection structure.
[0014]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the column base connection structure according to the present invention includes a rod-like connection member provided in the foundation structure at a position substantially at the center of the cross section of the column connected to the foundation structure. A lower support member that protrudes from the head and has a convex portion on the head of the foundation structure The Insert the rod-shaped connecting member into the convex part of the lower support member Provided in the state As , Base plate fixed to column leg The Fix Flat Connecting member And inserting the connecting member on the convex part of the lower support member. In a state where it can be rotated and deformed Listed And connecting the connecting member and the base plate fixed to the leg portion of the column to connect the leg portion of the column and the foundation structure.
[0015]
Since the present invention is configured as described above, the base plate is inserted into the convex portion of the lower support member provided at the head of the foundation structure and fixed to the leg portion of the column. The Fix Flat Connecting member And inserting the connecting member on the convex part of the lower support member. In a state where it can be rotated and deformed Listed Place And fixing the connecting member and a base plate fixed to the leg portion of the column. As a result, the leg portion of the column is connected to the foundation structure in a state in which it can rotate and deform. As a result, large rotational deformation of the column base can be expected quantitatively, and since the structure is simple, it is possible to provide a column base connection structure that is easy to manufacture at the factory and excellent in workability at the construction site. .
[0016]
In addition, when the upper pressing member is provided on the rod-shaped connecting member, the vertical movement of the connecting member is restricted, and the lifting force of the column is transmitted to the rod-shaped connecting member, the upper pressing member Since the vertical movement of the connecting member fixed to the base plate fixed to the column leg is restricted, the column leg and the foundation structure can be reliably connected. Further, since the lifting force of the column is transmitted to the rod-like connecting member, it is possible to resist the drawing load.
[0017]
Further, when the foundation structure is a pile foundation and the rod-like connecting member is provided directly on the pile foundation, the bending moment that the pile foundation bears can be reduced because the column base can be rotationally deformed. Therefore, it is possible to adopt a small-diameter pile foundation, simplify the foundation structure, and reduce labor, construction period, or construction cost for foundation work.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a column base connecting structure according to the present invention will be described specifically with reference to the drawings. FIG. 1 is a cross-sectional explanatory view showing a column base connecting structure according to the present invention, FIG. 2 is an exploded perspective view showing an assembly state of a lower support member and a foundation structure, and FIG. 3 is an assembly state of a connection member. FIG. 4 is an exploded perspective view showing how the column base and the connecting member are assembled. FIG. 5 shows how the grout material is filled when the rod-like connecting member is embedded in the hollow steel pipe pile. FIG. 6 is a cross-sectional explanatory view showing the structure of the lower support member and the level cap.
[0019]
FIG. 7 is a cross-sectional explanatory view showing a state in which the horizontal level of the lower support member and the vertical level of the rod-like connecting member are adjusted by the level cap when the steel pipe pile is installed obliquely, and FIG. 8 is on the connecting member. Cross-sectional explanatory diagram showing how the connection member is temporarily fixed when the column base is placed and fixed, FIG. 9 is a cross-sectional explanatory diagram illustrating the state where the connection member to which the column base is fixed is rotated and deformed by an earthquake or the like It is.
[0020]
FIG. 10 is a perspective view showing a state in which grout material is filled from a level cap of another configuration, FIG. 11 is a cross-sectional explanatory view showing an example of a lower support member used in the level cap of FIG. 10, and FIG. FIG. 13 is an explanatory cross-sectional view showing the configuration of various rod-like connecting members and the lower support member.
[0021]
FIG. 14 is an exploded perspective view showing the state of assembling the lower support member and the foundation structure when three anchor bolts are used as rod-shaped connecting members, and FIG. 15 is a diagram showing three anchor bolts connected to the rod-shaped connecting members. FIG. 16 and FIG. 17 are configurations of various foundation structures to which the column base connecting structure according to the present invention can be applied. FIG. 18 is a cross-sectional explanatory view showing another configuration for adjusting the position of the column and the rod-like connecting member, and FIG. 19 is another foundation structure to which the column base connecting structure according to the present invention can be applied. It is a section explanatory view showing the composition.
[0022]
FIG. 1 shows a column base connection structure in which a leg portion of a building pillar 1 and a steel pipe pile 2 which is a foundation structure and a pile foundation are directly connected, and a hollow steel pipe pile 2 embedded in the ground 6 is shown. One end of the rod-like connecting member 3 is embedded by filling and curing a filler 4 such as non-shrink grout material, concrete, or expanded concrete, which is an irregular shaped filler, and the other end of the rod-like connecting member 3 Projecting from the head of the steel pipe pile 2 to the position of the substantially central portion of the cross section of the column 1.
[0023]
Inside the hollow steel pipe pile 2, a dam member 5 is fixed at a position below the embedded end of the rod-like connecting member 3, and when the filler 4 is filled, the filler 4 Prevents leakage to the lower side. The dam member 5 may be formed by welding a steel plate or the like inside the steel pipe pile 2 or may be provided with a protrusion provided at a predetermined depth in the steel pipe pile 2. As the dam member 5, in addition to the iron plate, a mesh wire net, a resin plate, a resin molded body, or the like may be disposed to dam the filler 4.
[0024]
Further, the damming member 5 capable of damming the filler 4 may be hung and hung at a predetermined depth inside the steel pipe pile 2 by a string, a wire, a reinforcing bar or the like and hooked on the head of the steel pipe pile 2 to be cured. . In addition, you may comprise so that the weir member 5 may be abbreviate | omitted and the filler 4 may be filled over the whole inside of the steel pipe pile 2. FIG.
[0025]
It is preferable to increase the adhesion with the filler 4 by generating protrusions, recesses or rust on the hollow inner surface of the steel pipe pile 2.
[0026]
A level cap 7 having a hole 7a through which the rod-like connecting member 3 is inserted is attached to the head portion of the steel pipe pile 2 by a holding bolt 8, and a hole 9a through which the rod-like connecting member 3 is inserted above the level cap 7. A lower support member 9 having the above is placed.
[0027]
The lower support member 9 is formed with a convex portion 9b around the rod-like connecting member 3 inserted through the hole 9a, and the rod-like connecting member 3 is inserted above the convex portion 9b of the lower support member 9. A connecting member 10 having a hole 10a is placed.
[0028]
Further, a base plate 11 having a hole 11a through which the rod-like connecting member 3 is inserted is mounted on the upper portion of the connecting member 10.
[0029]
Column 1 can be composed of various steel columns such as square steel tube, round steel tube, assembled column, double column, H-shaped steel, I-shaped steel, etc. Base plate 11 is welded, bolted or fitted to the column base It is fixed by. In the case where the column 1 is H-shaped steel or I-shaped steel, the web connecting the flanges may be provided with a cutout that does not interfere with the end of the rod-like connecting member 3 protruding from the head of the steel pipe pile 2.
[0030]
The base plate 11 and the connecting member 10 are fixed by bolting with a high-strength bolt or the like, welding, or crimping.
[0031]
The rod-shaped connecting member 3 shown in FIG. 1 is composed of anchor bolts having threaded portions at both ends, and a fixing plate 12 such as a washer is fixed to the end portion embedded in the steel pipe pile 2 by bolting. ing. Thereby, the pulling-out resistance from the filler 4 of the rod-shaped connection member 3 is provided. Note that the fixing plate 12 can be omitted when the pull-out resistance is sufficient with the nut alone.
[0032]
A ring-shaped upper pressing member 13 is inserted into and contacted with the upper portion of the connecting member 10 at the end of the rod-shaped connecting member 3 on the side protruding from the head of the steel pipe pile 2. The member 13 is further fixed to the upper portion thereof by a double nut screwed to the screw portion of the rod-like connecting member 3.
[0033]
As shown in FIG. 2, the rod-like connecting member 3 is bolted to one end of an anchor bolt in advance at a factory or the like, and the lower support member 9 is inserted into the other end and a nut 14 is screwed outside. The combined product is produced.
[0034]
Then, as shown in FIG. 7, the rod-like connecting member 3 is inserted from the fixing plate 12 side into the hole 7 a of the level cap 7 provided at the head of the hollow steel pipe pile 2, and the lower support member 9 is attached to the level cap 7. The top end surface 7b is abutted and supported.
[0035]
Since the steel pipe pile 2 may be installed in a skewed state as shown in FIG. 7 when driven into the ground 6, the level cap 7 is adjusted by adjusting the fitting depth of the level cap 7 to the steel pipe pile 2. The level cap 7 is fixed to the steel pipe pile 2 by screwing and fastening the holding bolt 8 in a state where the top end surface 7b of 7 is aligned with the reference horizontal plane.
[0036]
A predetermined gap is set between the inner peripheral surface of the level cap 7 and the outer peripheral surface of the steel pipe pile 2, so that the top end surface 7b of the level cap 7 is set to a horizontal plane even when the steel pipe pile 2 is skewed. It can be done.
[0037]
In the present embodiment, the level cap 7 is fixed to the steel pipe pile 2 with three or more holding bolts 8, but the level cap 7 may be fixed to the steel pipe pile 2 by welding or the like. The level cap 7 and the steel pipe pile fixed by the holding bolt 8 after the inside of the steel pipe pile 2 in which the rod-like connecting member 3 is inserted and the inside of the level cap 7 are filled with the filler 4 such as concrete or grout material and hardened. Since a large force is not applied to the fixing part 2, various temporary fixing methods may be employed.
[0038]
As shown in FIG. 2, on the top end surface 7b of the level cap 7 fixed to the hollow steel pipe pile 2, an inking indicating the core of the column 1 (position of the central portion of the cross section of the column 1) obtained in advance by surveying. 7e is given.
[0039]
Then, when aligning the rod-like connecting member 3 with the core of the column 1 (the position of the central portion of the cross section of the column 1), the lower support member 9 is slid on the top end surface 7b of the level cap 7, and the lower support member 9 By positioning the positioning mark 9c formed in advance on the outer peripheral surface of the metal plate 7 and the inking 7e formed on the top end surface 7b of the level cap 7, the rod-like connecting member 3 can be easily set as the core of the column 1. .
[0040]
As shown in FIG. 6, the lower support member 9 of the present embodiment is formed by forming a convex portion 9b from a disk-shaped plate by press molding or the like. Filling ports 7c and 9d for filling the filler 4 are formed at predetermined positions on the top end surface 7b of the level cap 7 and the convex portion 9b of the lower support member 9, and FIGS. 5 (a) and 5 (b). As shown in FIG. 6, the filler 4 is filled from the filling ports 7c and 9d using the funnels 15a and 15b for filling the filler 4, and the steel pipe pile 2, the level cap 7 and the lower support are shown in FIG. The filler 4 is filled into the member 9 without any gap.
[0041]
In order to prevent the rod-like connecting member 3 from dropping when the filler 4 is hardened, the nut 14 screwed into the threaded portion at the upper end of the rod-like connecting member 3 is removed, and then, as shown in FIG. A hole 10a formed in the central portion of the connecting member 10 is inserted into the upper part of the convex portion 9b of the ninth member 9 and the connecting member 10 is placed.
[0042]
Then, a ring-shaped upper pressing member 13 is inserted through the bar-like connecting member 3 and placed on the upper part of the connecting member 10, the above-mentioned removed nut 14 is screwed and fastened, and another nut is screwed and fastened. Then fasten and fix with a double nut.
[0043]
Then, as shown in FIG. 4, the base plate 11 is mounted on the upper portion of the connecting member 10 by inserting the hole 11 a provided in the central portion of the base plate 11 fixed to the leg portion of the column 1 through the rod-like connecting member 3. The bolts are inserted into the bolt holes of the base plate 11 provided at the four corners of the outer periphery of the column 1 and the bolt holes provided at the four corners of the connecting member 10, respectively, and the nuts are screwed and fastened. The connection member 10 and the base plate 11 are fixed by bolting. The connecting member 10 and the base plate 11 may be fixed by welding or the like other than bolting.
[0044]
Since the connecting member 10 is rotatably arranged on the convex portion 9b of the lower support member 9, when the base plate 11 is fixed to the connecting member 10, as shown in FIG. At least three sets of cambers 16a and 16b are installed between the top end surface 7b and the lower surface of the connection member 10, the connection member 10 is temporarily fixed, and the base plate 11 fixed to the leg portion of the column 1 is mounted on the upper portion. If it is placed and fixed, the fixing work can be performed stably.
[0045]
When the connection member 10 and the base plate 11 are fixed, the assembled cambers 16a and 16b are removed, and the connection member 10, the base plate 11 and the column 1 are configured to be integrally rotatable and deformable.
[0046]
In the above configuration, the connecting member 10 fixed to the base plate 11 fixed to the leg portion of the column 1 on the convex portion 9b of the lower support member 9 provided on the head of the steel pipe pile 2 is in a state in which the connecting member 10 can be rotationally deformed. The connecting member 10 is inserted into the rod-like connecting member 3 embedded in the steel pipe pile 2 so that the column 1 Are connected to the steel pipe pile 2 in a state in which the leg portion can be rotationally deformed. Thereby, when a shake occurs due to an earthquake or the like, a large rotational deformation of the column base can be quantitatively expected as shown in FIG.
[0047]
FIG. 9 shows a state where the upper frame attached to the column 1 is deformed to the right side of FIG. 9 due to an earthquake or the like. In this case, the column base part is subjected to rotational deformation while applying a shearing force to move to the right side of FIG. 9 and a pulling force or a compressing force upward in the vertical direction. A pulling force is generated in the rod-like connecting member 3 by this pulling force.
[0048]
Further, when the connecting member 10 tries to rotate between the lower support member 9 and the upper pressing member 13, an additional pulling force is generated to the bar-shaped connecting member 3, and these pulling forces are combined to form a bar-shaped link. Join the member 3.
[0049]
The force with which the rod-like connecting member 3 tries to escape from the inside of the steel pipe pile 2 is the adhesion force of the filler 4 around the rod-like connecting member 3 and the fixing force of the lower end portion of the rod-like connecting member 3 to the filler 4 such as the fixing plate 12 and nuts. Is transmitted to the filler 4.
[0050]
If a solid material such as grout material or concrete is used as the filler 4, the force that the rod-like connecting member 3 tries to escape from the inside of the steel pipe pile 2 can be transmitted to the steel pipe pile 2.
[0051]
In order to transmit the force that the filler 4 tries to escape upward to the steel pipe pile 2, it can be expected to adhere to the inner surface of the steel pipe pile 2 and the filler 4, but it resists a larger pulling force. When necessary, the hook effect can be improved by providing irregularities on the inner surface of the steel pipe pile 2.
[0052]
For example, rust is generated on the inner surface of the steel pipe pile 2, a reinforcing bar or a plate is welded to the inner surface of the steel pipe pile 2, the steel pipe pile 2 is prepared with a plate such as a striped steel plate having irregularities in advance, A screw may be driven in from the outer surface side to provide a projection on the inner surface, or the lower end portion of the rod-like connecting member 3 and the steel pipe pile 2 may be connected by a reinforcing bar or plate to transmit the pulling force directly. .
[0053]
The compressive force transmitted through the lower support member 9 is also transmitted from the filler 4 to the steel pipe pile 2, but the transmission means can be configured in the same manner as described above. It is also possible to expect the effect of compressive force transmission by fixing the blocking member 5 inside the steel pipe pile 2 to the steel pipe pile 2.
[0054]
In addition, when a rotational deformation occurs while applying a shearing force to move to the right side of FIG. 9 and a compressive force that pushes downward in the vertical direction, the compressive force is the pillar 1 → base plate 11 → connection member 10 → lower support member 9 → filler. It is transmitted in the order of 4 → steel pipe pile 2 → ground 6 and no direct force is applied to the rod-like connecting member 3.
[0055]
However, the bar-like connecting member 3 is subjected to an additional pulling force accompanying the rotation of the connecting member 10 and a shearing force in the horizontal direction.
[0056]
In the above-mentioned column base connection structure, since the structure is simple, it is easy to manufacture each part at the factory and the workability at the construction site is also excellent.
[0057]
Further, since the vertical movement of the connecting member 10 fixed to the base plate 11 fixed to the leg portion of the column 1 is restrained by the upper pressing member 13, the leg portion of the column 1 and the steel pipe pile 2 are reliably connected. I can do it. Further, since the lifting force is transmitted to the rod-like connecting member 3, it is possible to resist the drawing load.
[0058]
In addition, by adopting the steel pipe pile 2 as the pile foundation as the foundation structure, it is possible to reduce the bending moment that the steel pipe pile 2 bears because the column base can be rotated and deformed. The pile 2 can be employed, and the foundation structure can be simplified to reduce the labor, construction period, or construction cost for the foundation work.
[0059]
10 and 11 are diagrams showing another configuration of the level cap 7 and the lower support member 9. In the level cap 7 of the present embodiment, as shown in FIGS. 10A and 10B, in addition to the filling port 7c formed with an arc-shaped slit in the circumferential direction of the top end surface 7b of the level cap 7 described above. A filling port 7d formed of a radial slit continuous with the central hole 7a is formed to extend outward from the outer diameter of the lower support member 9. Further, as shown in FIG. 11, the lower support member 9 of the present embodiment has a filling port 9d omitted.
[0060]
And the filling material 4 is filled from the filling port 7c using the funnel 15a, so that the filling material 4 is filled on the lower surfaces of the steel pipe pile 2, the level cap 7 and the lower support member 9, and then the filling material is filled excessively. When the material 4 overflows from the filling port 7d, the lower portion of the convex portion 9b of the lower support member 9 can be filled and cured without any gap.
[0061]
12A to 12C are diagrams showing another configuration of the lower support member 9. FIG. 12A shows an example in which the convex portion 9b of the lower support member 9 is formed thick by welding or cutting, and FIG. A body-like ring-shaped member 17 is placed to form a convex portion. FIG. 12C shows the use of the nut 14 as a convex portion while leaving the nut 14 as it is at the top of the flat lower support member 9.
[0062]
These configurations of the lower support members 9 can provide the same effects as described above.
[0063]
FIG. 13A is an example in which a deformed reinforcing bar is used as the rod-like connecting member 3 and two rod-like connecting members 3 are arranged. The lower support member 9 has two rod-like connecting members 3. Two holes to be inserted are formed. FIG. 13 (b) shows an example in which a plate 18 or the like is welded to the head of the steel pipe pile 2 and a bolt 19 is stud-welded and fixed upright. Then, the lower support member 9 is inserted into the bolt 19 and configured in the same manner as described above.
[0064]
In FIG. 13C, a bolt 19 is inserted through a washer 20 into a hole 7 a formed at the center of the level cap 7, and a nut 14 is screwed and fastened through the washer 20. Then, the level cap 7 is welded to the steel pipe pile 2. The nut 14 is configured as a convex portion of the lower support member. The bolt 19 shown in FIGS. 13B and 13C is preferably made of a relatively high strength material.
[0065]
14 and 15 show an example in which the column 1 is relatively large, and three rod-like connecting members 3 are arranged, and the lower support member 9 has three holes through which the three rod-like connecting members 3 are inserted. Is formed. These three holes are through-holes similar to those described above, and are configured to pass through the rod-like connecting member 3 and prevent the rod-like connecting member 3 from falling by a nut (not shown).
[0066]
As shown in FIG. 14, the rod-like connecting member 3 is inserted into the hollow steel pipe pile 2, filled with the filler 4 through the filling ports 7c and 9d as described above, and cured, as shown in FIG. The rod-like connecting member 3 is inserted into the hole 10a formed in the central portion of the member 10, the connecting member 10 is placed on the upper portion of the convex portion 9b of the lower support member 9, and a disk-like upper presser is further provided thereon. The bar-like connecting member 3 is inserted into the hole 13a of the member 13, the upper pressing member 13 is placed on the upper part of the connecting member 10, and the nut 14 is screwed and fastened to each bar-like connecting member 3.
[0067]
Then, on the upper part of the connecting member 10, the base plate 11 is placed by inserting the rod-like connecting member 3 into the hole 11 a provided in the center portion of the base plate 11 fixed to the leg portion of the column 1, and the outer periphery of the column 1. A bolt (not shown) is inserted into each of the bolt holes of the base plate 11 provided on the four sides of the part and each of the bolt holes provided on the four sides of the connecting member 10, and the nut is screwed and fastened to connect the connecting member 10. And the base plate 11 are fixed by bolting. The connecting member 10 and the base plate 11 may be fixed by welding or the like other than bolting. Other configurations are the same as described above, and the same effects can be obtained.
[0068]
FIG. 16 is a diagram showing another configuration of the foundation structure. 16 (a) shows a foundation structure in which a steel pipe pile 2 is embedded in the hollow part of a PC (precast concrete) pile 20, and FIG. 16 (b) shows a steel pipe pile inside a ground improvement body 21 improved from the ground 6. Reference numeral 2 denotes an embedded foundation structure.
[0069]
FIG. 16 (c) shows a foundation structure in which the upper periphery of the steel pipe pile 2 is reinforced with a large diameter steel pipe 22. The foundation structure shown in FIGS. Effective for improving shear resistance. 16 (d) shows a hollow steel pipe concrete pile (SC pile) 23 in which concrete is provided inside the steel pipe, and FIG. 16 (e) shows a hollow concrete pile (PHC pile) 24 as a foundation structure. It is an example. Other configurations are the same as described above, and the same effects can be obtained.
[0070]
FIG. 17 shows an example of the case where the rod-like connecting member 3 and the lower support member 9 are attached to an RC (reinforced concrete) foundation 25 embedded in the ground 6. In FIG. 17 (a), before the concrete of the RC foundation 25 is placed, the rod-like connecting member 3 is previously supported by a reinforcing bar 26 or a formwork (not shown), and the concrete is placed and hardened. The rod-like connecting member 3 is inserted into the hole 9a formed in the center of the lower support member 9 in the head of the RC base 25, and the lower support member 9 is placed.
[0071]
17B, the rod-like connecting member 3 is inserted and fixed to the head of the existing RC foundation 25, and the hole 9a formed in the central portion of the lower support member 9 is sticked to the head of the RC foundation 25. The lower support member 9 is placed through the connecting member 3. Other configurations are the same as described above, and the same effects can be obtained.
[0072]
FIG. 18 is a cross-sectional explanatory view showing another configuration for adjusting the positions of the pillar 1 and the rod-like connecting member 3. A large-diameter hole or notch is formed in the base plate 11 fixed to the leg portion of the pillar 1. A position adjustment region 11b is formed, and a bolt is inserted into the bolt hole of the connection member 10, the position adjustment region 11b of the base plate 11, and the bolt hole of the auxiliary fixing plate 27, and the nut is screwed and fastened. By using the position adjustment region 11b, the column 1 and the rod-like connecting member 3 can be aligned and bolted.
[0073]
After the connection member 10 and the base plate 11 are fixed, the filler 4 such as a grout material is filled from the filling port 27a formed in the auxiliary fixing plate 27 to fill the position adjustment region 11b and harden.
[0074]
FIG. 19 shows an example in which the column 1 is connected by attaching the rod-like connecting member 3 and the lower support member 9 to the head of foundation concrete (hereinafter referred to as “fabric foundation 28”) laid on the ground 6. The fabric foundation 28 has a split stone 29 laid on the ground 6, a concrete 30 is placed on the top of the split stone 29, and a fabric foundation 28 is placed on the top.
[0075]
Before placing the concrete of the fabric foundation 28, the rod-like connecting member 3 is previously supported by a reinforcing reinforcing bar or a formwork (not shown) placed inside, placed and hardened by placing the concrete, The rod-like connecting member 3 is inserted into a hole 9a formed in the central portion of the lower support member 9 in the head of the fabric base 28, and the lower support member 9 is placed. Other configurations are the same as those in FIG. 1, and the same effects can be obtained.
[0076]
【The invention's effect】
Since the present invention has the above-described configuration and operation, the base plate includes a rod-like connecting member inserted into the convex portion of the lower support member provided at the head of the foundation structure and fixed to the leg portion of the column. By arranging the connecting member to be fixed in a state in which it can be rotationally deformed, the leg portion of the column is coupled to the foundation structure in a state in which it can be rotationally deformed. As a result, large rotational deformation of the column base can be expected quantitatively, and since the structure is simple, it is possible to provide a column base connection structure that is easy to manufacture at the factory and excellent in workability at the construction site. .
[0077]
In addition, when an upper pressing member is provided on the rod-shaped connecting member to restrict the vertical movement of the connecting member and the lifting force of the column is transmitted to the rod-shaped connecting member, Since the vertical movement of the connecting member fixed to the base plate fixed to the leg portion is restricted, the leg portion of the column and the foundation structure can be reliably connected. Further, since the lifting force of the column is transmitted to the rod-like connecting member, it is possible to resist the drawing load.
[0078]
In addition, when the foundation structure consists of a pile foundation and a rod-shaped connecting member is provided directly on the pile foundation, the bending moment borne by the pile foundation can be reduced because the column base can be rotated and deformed. Therefore, a small-diameter pile foundation can be adopted, and the foundation structure can be simplified to reduce labor, construction period, or construction cost for foundation work.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing a column base connecting structure according to the present invention.
FIG. 2 is an exploded perspective view showing how the lower support member and the foundation structure are assembled.
FIG. 3 is an exploded perspective view showing how a connecting member is assembled.
FIG. 4 is an exploded perspective view showing a state of assembling the column base and the connection member.
FIG. 5 is a perspective view showing a state in which a grout material is filled when a rod-like connecting member is embedded in a hollow steel pipe pile.
FIG. 6 is a cross-sectional explanatory view showing a configuration of a lower support member and a level cap.
FIG. 7 is an explanatory cross-sectional view showing a state in which the horizontal level of the lower support member and the vertical level of the rod-like connecting member are adjusted by the level cap when the steel pipe pile is installed obliquely.
FIG. 8 is an explanatory cross-sectional view showing a state in which the connection member is temporarily fixed when the column base is placed and fixed on the connection member.
FIG. 9 is an explanatory cross-sectional view illustrating a state in which a connecting member to which a column base is fixed is rotated and deformed by a shake such as an earthquake.
FIG. 10 is a perspective view showing a state in which a grout material is filled from a level cap having another configuration.
11 is an explanatory cross-sectional view showing an example of a lower support member used in the level cap of FIG.
FIG. 12 is a cross-sectional explanatory view showing the configuration of various lower support members.
FIG. 13 is an explanatory cross-sectional view showing configurations of various rod-like connecting members and a lower support member.
FIG. 14 is an exploded perspective view showing a state of assembling the lower support member and the foundation structure when three anchor bolts are used as rod-like connecting members.
FIG. 15 is an exploded perspective view showing a state where the connecting member is assembled and the column base and the connecting member are assembled when three anchor bolts are used as rod-like connecting members.
FIG. 16 is an explanatory cross-sectional view showing configurations of various foundation structures to which the column base connection structure according to the present invention can be applied.
FIG. 17 is an explanatory cross-sectional view showing configurations of various foundation structures to which the column base connection structure according to the present invention can be applied.
FIG. 18 is an explanatory cross-sectional view showing another configuration for adjusting the positions of columns and rod-like connecting members.
FIG. 19 is a cross-sectional explanatory view showing a configuration of another foundation structure to which the column base connection structure according to the present invention can be applied.
[Explanation of symbols]
1 ... Pillar
2 ... Steel pipe pile
3 ... Rod-shaped connecting member
4 ... Filler
5 ... Damping member
6 ... Ground
7 Level cap
7a ... hole
7b ... Top end face
7c, 7d ... filling port
7e ... Inking
8 ... Holding bolt
9 ... Lower support member
9a ... hole
9b ... convex portion
9c ... Positioning mark
9d ... Filling port
10… Connecting member
10a ... hole
11… Base plate
11a ... hole
11b ... Position adjustment area
12 ... Fixing plate
13… Upper holding member
13a ... hole
14 ... Nut
15a, 15b ... funnel
16a, 16b ... set camber
17… Ring-shaped member
18 ... Plate
19 ... Bolt
20 ... PC pile
21 ... Ground improvement body
22 ... Steel pipe
23 ... SC pile
24 ... PHC pile
25 ... RC basics
26 ... Reinforcing bars
27 ... Fixing auxiliary plate
27a ... Filling port
28… Fabric foundation
29 ... Written stone
30 ... concrete

Claims (3)

  1. A rod-shaped connecting member provided on the foundation structure is projected from the head of the foundation structure at a position substantially at the center of the cross section of the column connected to the foundation structure, and is convex on the head of the foundation structure the rod-like connecting the lower support member to the plate-like connecting member for fixing the lower the convex portion of the support member Rutotomoni provided in a state of inserting the rod-like connecting member, a base plate which is fixed to the leg portion of the column having a section with inserting the member, that the connecting member and location mounting a rotary deformable state on the convex portion of the lower support member, and fixing the base plate which is fixed to the leg portion of the connecting member and the pillar A column base connecting structure characterized in that the column leg and the base structure are connected with each other.
  2.   The upper pressing member is provided on the rod-like connecting member, the vertical movement of the connecting member is restricted, and the lifting force of the column is transmitted to the rod-like connecting member. Column base connection structure.
  3.   The column base connection structure according to claim 1, wherein the foundation structure is a pile foundation, and the rod-like connection member is provided directly on the pile foundation.
JP2001241845A 2001-08-09 2001-08-09 Column base connection structure Active JP4693299B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001241845A JP4693299B2 (en) 2001-08-09 2001-08-09 Column base connection structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001241845A JP4693299B2 (en) 2001-08-09 2001-08-09 Column base connection structure

Publications (2)

Publication Number Publication Date
JP2003055984A JP2003055984A (en) 2003-02-26
JP4693299B2 true JP4693299B2 (en) 2011-06-01

Family

ID=19072210

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001241845A Active JP4693299B2 (en) 2001-08-09 2001-08-09 Column base connection structure

Country Status (1)

Country Link
JP (1) JP4693299B2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4491206B2 (en) * 2003-08-15 2010-06-30 岡部株式会社 Washer with grout injection hole
JP2006265999A (en) * 2005-03-25 2006-10-05 Koyama Kosakusho:Kk Basic structure of independent pile without basic beam
JP5038261B2 (en) * 2008-08-27 2012-10-03 株式会社クボタ Pile construction structure and construction method
JP5467983B2 (en) * 2009-10-02 2014-04-09 新日鉄住金エンジニアリング株式会社 Pile head joint structure
JP5574366B2 (en) * 2010-04-14 2014-08-20 学校法人福岡大学 Pile head joint member and pile head joint structure using the same
KR101127994B1 (en) * 2010-04-29 2012-03-29 한국토지주택공사 Connection between foundation and pipe pile
JP5701158B2 (en) * 2011-06-08 2015-04-15 岡部株式会社 Exposed steel column joint structure of pin joint type
CN102425189A (en) * 2011-09-13 2012-04-25 赵正义 Vertical connecting structure of tower mechanical equipment and foundation
JP5841851B2 (en) * 2012-01-31 2016-01-13 新日鉄住金エンジニアリング株式会社 Pile head joint structure assembly jig and pile head joint structure assembly method using the same
JP5940318B2 (en) * 2012-02-13 2016-06-29 城東テクノ株式会社 Installation method of mounting base
JP2013213333A (en) * 2012-04-02 2013-10-17 Hakusui Kosan Kk Foundation structure for installation of roof floor structure
JP5498595B1 (en) * 2013-01-30 2014-05-21 大和ランテック株式会社 Foundation pile
JP6175243B2 (en) * 2013-02-04 2017-08-02 日鐵住金建材株式会社 Base support structure
JP6245814B2 (en) * 2013-03-01 2017-12-13 旭化成建材株式会社 Pile head structure
JP6457886B2 (en) * 2014-05-20 2019-01-23 青木あすなろ建設株式会社 Pile head pin joint structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931643U (en) * 1982-07-26 1984-02-27
JPH11131495A (en) * 1997-10-24 1999-05-18 Fujita Corp Connecting structure between foundation pile and foundation footing
JPH11181790A (en) * 1997-12-18 1999-07-06 Matsumura Kouzou Keikaku:Kk Execution method of building foundation
JP2000248560A (en) * 1999-03-01 2000-09-12 Ohbayashi Corp Base isolation construction of pile
JP2002129583A (en) * 2000-10-20 2002-05-09 Shimizu Corp Building construction method and stress transmission device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5931643U (en) * 1982-07-26 1984-02-27
JPH11131495A (en) * 1997-10-24 1999-05-18 Fujita Corp Connecting structure between foundation pile and foundation footing
JPH11181790A (en) * 1997-12-18 1999-07-06 Matsumura Kouzou Keikaku:Kk Execution method of building foundation
JP2000248560A (en) * 1999-03-01 2000-09-12 Ohbayashi Corp Base isolation construction of pile
JP2002129583A (en) * 2000-10-20 2002-05-09 Shimizu Corp Building construction method and stress transmission device

Also Published As

Publication number Publication date
JP2003055984A (en) 2003-02-26

Similar Documents

Publication Publication Date Title
AU2016204963B2 (en) Construction frame shear lug
JP3002107B2 (en) Column base structure and column base construction method
US6503024B2 (en) Concrete foundation pierhead and method of lifting a foundation using a jack assembly
US6431797B2 (en) Masonry retainer wall system and method
KR100799358B1 (en) Combined retaining wall and method for constructing thereof
US20020129568A1 (en) Brace-type damper mounting structure
JP2007535634A (en) How to set up a tower
JP4284056B2 (en) Non-embedded column base construction method and non-embedded column base structure
KR100713692B1 (en) A prestresed connection set bridge post using unit filled concrete with internally confined hollow and a method for construction
JP2007527971A (en) How to set up a tower
JP4691690B2 (en) Joint structure and joining method of pedestal
US5157882A (en) Pole support system for a carport and the like
JP3899354B2 (en) Seismic isolation building
JP4079975B2 (en) Retaining wall construction method
KR20060072934A (en) Bridge bearing for preventing upper-slab from falling and construction method thereof
KR20110103000A (en) Precast bridge joint structure with composite hollow concrete filled tube and a construction method for the same
KR100662811B1 (en) Non-synthetic complex steel pipe columm having tie ends for filling a steel soncrete and construction method thereof
US5609005A (en) Foundation connector for tilt-up concrete wall panel and method of use
JP5113342B2 (en) Embankment structure
JP2004162362A (en) Aseismatic reinforcing structure for pile foundation structure
KR20150063490A (en) Structural foundation
KR20130124266A (en) Structure and method of constructing concrete footing structure of top structure
KR100837608B1 (en) J.K Bracket Method
WO2006030893A1 (en) Foundation structure of tower
KR101397800B1 (en) Method for reinforcing seismic capability of existing moment frames buildings of reinforced concrete by section enlargement

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20080131

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080801

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20101006

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101019

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101202

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110222

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110222

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140304

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4693299

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150