JPH10292488A - Connecting structure for steel frame column and concrete foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the drawing yield strength of anchor bolts and rigidly connect a steel frame column base via the reinforcement by iron sheets of a column base installation portion by integrating a concrete foundation and the anchor bolts with the iron sheets. SOLUTION: Anchor bolts 1 cannot be sufficiently buried for the connection of a flat concrete foundation and a steel frame column base, and rigid connection cannot be made. An upper iron sheet 3 and a lower iron sheet 4 are fitted to the column and beam portions on the concrete foundation, prestress is applied by the anchor bolts 1 and column bars 2, and the iron plates 3, 4 and concrete are integrated to reinforce the column and beam portions. The iron sheets 3, 4 are utilized to fix the anchor bolts 1, and the steel frame column base is rigidly connected to the concrete foundation by the anchor bolts 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial applications] For the connection between the concrete foundation and steel column base shown in Fig. 1, rigid beams could not be rigidly connected because the required anchoring length of anchor bolts could not be obtained for flat beams (16) with low foundation height. If the foundation structure of the invention is used, an economical flat concrete foundation can be rigidly connected to a steel column base, and the steel frame construction can be omitted.

[0002]

[Prior art] Rigid connection between concrete foundation and steel column is either embedded method or exposed fixed column base method. However, since the foundation column is made higher and embedding and the length of anchor bolts are required more than a certain length, excavation formwork etc. Many are needed.

[0003]

SUMMARY OF THE INVENTION
Therefore, the anchor for fixing the column base is shortened and the strength is reduced.The column and beam are reinforced with steel plate.The fixing of the column base is transmitted to the base column and beam by using the iron plate, and the column and foundation can be rigidly connected. To

[0004]

[Means to solve the problem] Reinforce the foundation pillars (15) and beams (16) with the iron plate shown in Fig. 1 and tighten the columns and anchor bolts to make the foundation and the iron plate integral. Even if the anchor bolts are short, the iron plate The stress can be dispersed and transmitted, and the rigid connection between the steel column base and the foundation can be achieved.

[0005]

[Function] A concrete foundation column (15) and a beam (16) are sandwiched between steel plates. Prestress is introduced by bolts, and the steel plate is firmly joined to the foundation. Are distributed to the foundation and transmitted, and secure bonding can be performed.

[0006]

[Embodiment] An economical and labor-saving steel-frame building can be achieved by rigidly connecting steel columns with anchor bolts using a flat solid foundation and a steel plate. The steel column can be attached by attaching the base plate to the iron plate, placing concrete, tightening the column bolts, setting the steel column on the pace plate, welding the joints, and fixing the column. The connection between the foundation pillar (15) and the beam (16) is made using the reinforcing steel plate shown in Fig. 6. The upper main bar (18) and the lower main bar (19) of the beam
▼ can be welded and joined to the iron plate to eliminate the reinforcement. To increase the strength of the joint between the column, beam and steel column base, increase the thickness of the iron plate (13) shown in Fig. 7 in the beam direction and use the haunch (20) for the beam (16) In (15), the beam height can be increased to increase the strength of the joint.

[0007]

[Effect of the Invention] The joint between the column and the beam is reinforced with an iron plate and the iron plate and the concrete are integrated by the introduction of prestress, so that the joint between the foundation and the floor and the column can be labor-saving requiring a haunch. A stronger joint can be achieved by using a stiffened steel plate for the joint surface between the concrete and the steel plate. The method of assisting the joint of a column and a beam with an iron plate according to the present invention can be used even when the steel column is a concrete column (12), and as shown in FIG. Can be applied.

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a plan view of the present invention.

FIG. 3 is a cross-sectional view of the present invention.

FIG. 4 is a sectional view of the present invention.

FIG. 5 is a plan view of the present invention.

FIG. 6 is a sectional view of the present invention.

FIG. 7 is a sectional view of the present invention.

FIG. 8 is a sectional view of the present invention.

[Description of Signs] Anchor Bolt Column Main Bar Upper Iron Plate Lower Iron Plate Main Bar Nut Anchor Bolt Nut Base Plate Steel Column Joint ▲ 10 ▼ Steel Column Installation ▲ 11 ▼ Below Opening
▲ 12 ▼ Concrete pillar ▲ 13 ▼ Iron plate ▲ 14 ▼ Plate ▲ 15 ▼
Pillar ▲ 16 ▼ Beam ▲ 17 ▼ Steel pipe ▲ 18 ▼ Upper beam ▲ 19 ▼ Lower beam ▲ 20 ▼
Haunch ▲ 21 ▼ Floor beam

Claims (3)

[Claims] An upper steel plate and a lower steel plate to which anchor bolts for fixing a steel column base and column main reinforcements are attached are used as base columns.
Install concrete above and below 15 ▼ and beam ▲ 16 ▼. Pour concrete and harden. Pillar nut Nut of anchor bolt Nut of pre-stress is introduced. 2. The structure according to claim 1, wherein a steel column to be attached in place of the anchor bolt of FIG. 3. The steel column installation part (10) of the iron plate shown in FIG. 4 is opened larger than the column, and the lower part (11) of the opening is omitted at the time of concrete casting, and the steel column is installed and the plate (10) is removed.
The structure according to claim 1, wherein the steel frame is assembled after joining with the iron plate in (14), and concrete is cast in (11) to fix the pillar.