JP2005273299A - Column base structure of foundation and construction method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a column base structure of a foundation improved in the workability and the construction method thereof. <P>SOLUTION: The column base structure K of a foundation in the present invention is provided with a foundation block 10. The foundation block 10 has a base plate P of a steel-frame C and a steel-framed side plate 12 fastened by bolts. After a joint member 20 has been connected to the foundation block 10, it is set in the specified position of the foundation and the base plate P of the steel-frame C is put on the steel-framed side plate 12, both plates 12, P are bolted to erect the steel-frame C. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a base column base structure and a construction method thereof. More specifically, the present invention relates to a base column base structure capable of simplifying construction and a construction method thereof.

  Conventionally, a column base structure K ′ as shown in FIGS. 8 and 9 is used in a column base of a steel frame concrete foundation.

  That is, a base shaft member 101 made of a square steel pipe, a joint member 102 made of H-shaped steel joined to the lower end portion of the base shaft member 101, and a predetermined arrangement around the joint member 102. A column base portion structure K ′ including a reinforcing bar 103 is used. After the foundation steel frame made of H-shaped steel is joined to the joint member 102, the concrete is cast to complete the steel concrete foundation, and the lower end of the column is welded to the tip of the shaft member 101 to construct the steel frame. Made.

  However, since the front end of the shaft member 101 and the lower end of the column are welded and joined by on-site welding, there is a problem that the work is required to be careful and the workability is poor.

  The present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a foundation column base structure with improved workability and a construction method thereof.

  The foundation column base part structure of the present invention is a foundation column base part structure, comprising a foundation block, wherein the foundation block has a steel side plate that is bolted to a steel base plate.

  In the base column base structure of the present invention, the steel plate is preferably reinforced by a reinforcing member.

  In the base column base structure of the present invention, the reinforcing member is preferably the same size as the steel frame.

  Furthermore, in the column base part structure of the foundation of the present invention, it is preferable that the reinforcing member is disposed directly below the steel frame on the back surface of the steel frame side plate.

  Furthermore, in the column base part structure of the foundation of the present invention, it is preferable that the joint member is joined to the foundation block.

  The construction method of a foundation column base structure of the present invention is a construction method of a foundation column base structure, which is a procedure for producing a foundation block having a steel side plate to be bolted to a steel base plate, and the foundation It includes a procedure for joining the joint member to the block and a procedure for setting the foundation block to which the joint member is joined at a predetermined position of the foundation.

  The foundation block of the present invention is a foundation block used for a foundation column base structure, and has a steel side plate that is bolted to a steel base plate.

  In the foundation block of the present invention, it is preferable that the steel side plate is reinforced by a reinforcing member.

  Moreover, in the basic block of this invention, it is preferable that a reinforcement member is made the same size as a steel frame.

  Furthermore, in the basic block of the present invention, it is preferable that the reinforcing member is disposed directly below the steel frame on the back side of the steel plate.

  According to the present invention, since the steel frame can be constructed without in-situ welding between the base column base structure and the steel frame, an excellent effect can be obtained that rapid construction can be performed while improving the quality.

  Hereinafter, although the present invention is explained based on an embodiment, referring to an accompanying drawing, the present invention is not limited only to this embodiment.

  A basic column base structure (hereinafter simply referred to as a column base structure) according to an embodiment of the present invention is shown in FIG.

  As shown in FIG. 1, the column base part structure K includes a foundation block 10 and joint beams (joint members) 20, 20,... Made of H-shaped steel having one end joined to the foundation block 10. And as a main component. In the figure, reference numeral 30 denotes concrete, C denotes a steel frame, P denotes a steel base plate, and B denotes a one-side bolt.

  The base block 10 includes a base plate 11, a steel side plate 12 that receives a base plate P of a steel frame (square steel pipe) C, a joining member 13 that joins the base plate 11 and the steel side plate 12, and a joining member 13. A reinforcing member 14 is provided between the plates 11 and 12 to reinforce the steel frame side plate 12.

  The base plate 11 is a rectangular flat plate having a predetermined thickness larger than that of the base plate P of the steel frame C.

  The steel frame side plate 12 is a rectangular flat plate having the same size as the base plate 11 and having a predetermined thickness. Bolt insertion holes (not clearly shown) corresponding to bolt insertion holes provided in the base plate P of the steel frame C are formed at the four corners of the steel frame side plate 12.

  The joining member 13 is a square steel pipe having a size that does not hinder the insertion of the one-side bolt B from the bolt insertion hole.

  The reinforcing member 14 is a square steel pipe having the same size as that of the square steel pipe used for the steel frame C, and has the same size as that of the joining member 13. Yes. By making the reinforcing member 14 a square steel pipe having the same size as the square steel pipe, the end material of the steel frame C can be used, and the material cost can be made substantially zero.

  A fitting member (H-shaped steel) 20 to be bonded to the basic steel frame (H-shaped steel) is bonded to appropriate surfaces (four surfaces in the illustrated example) of the basic block 10. For example, H-shaped steel flanges are joined to the end faces of both plates 11 and 12 by butt welding, and the web is joined to the back surfaces of both plates 11 and 12 and the side surfaces of the joining member 13 by fillet welding.

  Next, an example of a method for constructing the column base part structure K having such a configuration will be described with reference to FIGS.

  Procedure 1: One end of the reinforcing member 14 is welded and joined to the steel plate 12 on which the bolt insertion hole is formed at a position corresponding to the steel frame C (see FIG. 2).

  Procedure 2: One end of the joining member 13 is welded to the steel plate 12 so as to form a housing space for the one-side bolt B between the reinforcing member 14 (see FIG. 3).

  Procedure 3: The other end of the joining member 13 is welded to the base plate 11. Thereby, the basic block 10 is completed (refer FIG. 4). In this case, it is preferable to turn the top and bottom so that the steel side plate 12 faces upward so that welding can be performed by downward welding.

  Procedure 4: A joint beam (H-shaped steel) 20 is welded to a predetermined position of the foundation block 10 (see FIG. 5).

  Procedure 5: The foundation block 10 to which the joint beam 20 is joined is carried into the construction site and set at a predetermined position.

  Procedure 6: A basic steel frame is bolted to the joint beam 20.

  Procedure 7: Concrete 30 is cast while curing the upper surface of the steel plate 12 to complete the steel concrete foundation (see FIG. 6).

  Procedure 8: The base plate P of the steel frame C is placed on the upper surface of the steel side plate 12, and the steel side plate 12 and the base plate P of the steel frame C are fastened by the one side bolt B.

  As described above, according to this embodiment, the workability is good because the column can be constructed without welding at the site. Therefore, a rapid construction can be achieved while improving the quality, and the construction period is shortened.

  The column base part structure K is also a simple structure in which the joint beam 20 is joined to the foundation block (which is the same height as the foundation steel frame) 10 to which the plates 11 and 12 are joined at both ends. It can be done. Further, since the steel side plate 12 is reinforced by the reinforcing member 14, desired strength is ensured while suppressing an increase in the thickness of the steel side plate 12. Moreover, since the reinforcing member 14 uses the end material of the steel frame C, the material cost required for the reinforcing member 14 can be made substantially zero.

  As mentioned above, although this invention has been demonstrated based on embodiment, this invention is not limited only to this embodiment, A various change is possible. For example, in the present embodiment, a steel concrete foundation is described as an example, but the present invention can also be applied to a steel foundation. In that case, there is no problem in the construction of the steel frame even if the backfilling is performed.

  The present invention can be applied to a steel concrete foundation and a steel foundation to be joined to a column base.

It is a 2nd page figure of the basic column base part structure concerning one embodiment of the present invention, and (a) shows a top view and (b) shows a front view. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state to which the reinforcement member was joined to the steel frame side plate is shown. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state to which the joining member was joined to the steel frame side plate is shown. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state to which the joining member was joined to the baseplate is shown. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state where the joint beam was joined to the foundation block is shown. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state which the steel-frame concrete foundation was completed is shown. It is explanatory drawing of the construction method of the column base part structure of the embodiment, Comprising: The state which the base plate of the steel frame was fastened by the steel frame side plate is shown. It is a perspective view of the conventional column base part structure. It is the same schematic.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Base block 11 Base plate 12 Steel side plate 13 Joint member 14 Reinforcement member 20 Joint member, joint beam 30 Concrete C Steel P Base plate B One side bolt

Claims (10)

The column base structure of the foundation, with a foundation block,
The foundation column base structure, wherein the foundation block includes a steel side plate that is bolted to a steel base plate.   2. The foundation column base part structure according to claim 1, wherein the steel side plate is reinforced by a reinforcing member.   3. The column base structure of a foundation according to claim 2, wherein the reinforcing member is the same size as the steel frame.   The foundation column base part structure according to claim 2, wherein the reinforcing member is disposed directly below the steel frame on the rear surface of the steel plate.   2. The column base part structure of a foundation according to claim 1, wherein a joint member is joined to the foundation block. A construction method of a base column base structure,
A procedure for producing a foundation block having a steel side plate to be bolted to a steel base plate;
A procedure for joining a joint member to the foundation block;
And a step of setting the foundation block to which the joint member is joined at a predetermined position of the foundation. A foundation block used for the column base structure of the foundation,
A foundation block having a steel side plate to be bolted to a steel base plate.   The foundation block according to claim 7, wherein the steel side plate is reinforced by a reinforcing member.   The foundation block according to claim 7, wherein the reinforcing member has the same size as the steel frame. The foundation block according to claim 7, wherein the reinforcing member is disposed directly below the steel frame on the back surface of the steel frame side plate.

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