CN110777936A - Connecting structure and mounting method of box steel column and unequal-height I-shaped steel beam - Google Patents

Abstract

The invention discloses a connection structure and an installation method of a box-shaped steel column and an I-shaped steel beam of unequal height, comprising a box-shaped steel column, a high-side I-shaped steel, a low-side I-shaped steel, a horizontal top plate, a triangular plate and a second beam End plate, second U-shaped steel, angle steel, first bolt, second bolt, first beam end plate and first U-shaped steel. The connection node between the box-shaped steel column and the unequal-height I-shaped steel beam can not only exert the advantages of the combined structure, but also meet the requirements of aesthetics and functions, and at the same time, it can improve the construction speed, and the node has a large ductility and deformation capacity. To ensure construction quality and safety, it can be widely used in various building structures, which greatly promotes the development of the construction industry.

Description

A connection structure and installation method of box-shaped steel column and unequal-height I-shaped steel beam

technical field

The invention belongs to the technical field of construction engineering, and particularly relates to a connection structure and an installation method of a box-shaped steel column and an I-shaped steel beam of unequal height.

Background technique

With the development of modernization, the construction of large industrial plants and multi-high-rise and super-high-rise buildings, steel structures are used in more and more places. For beam-column connection joints in ordinary steel structures, full welding or flange welding-web bolt connection is often used. Although this connection method has high strength and stiffness, the ductility and deformation capacity of the joints are not sufficient. In addition, on-site welding is required, and the construction efficiency is low.

The appearance of prefabricated steel connection joints, compared with the existing ordinary connection joints, the main components and welding processes are completed in the factory, only need to be hoisted and bolted on site, the construction speed is accelerated, and it has greater ductility and ductility. Deformation ability, can maintain good performance in the event of earthquake or fire, to ensure the safety of people's lives and properties.

SUMMARY OF THE INVENTION

The present invention proposes a connection structure and an installation method of a box-shaped steel column and an I-shaped steel beam of unequal height, so as to solve the problems raised in the above-mentioned background technology. The technical scheme of the present invention is realized as follows:

A connection structure of a box-shaped steel column and an I-shaped steel beam of unequal height, comprising a box-shaped steel column, a high-side I-shaped steel, a low-side I-shaped steel, a horizontal top plate, a triangular plate, a second beam end plate, and a second U-shaped steel , angle steel, first bolt, second bolt, first beam end plate and first U-shaped steel,

Both sides of the box-shaped steel column are vertically welded with a horizontal top plate and a triangular plate, and the triangular plate is vertically welded on the upper surface of the horizontal top plate;

The high-side I-shaped steel and the short-side I-shaped steel are respectively arranged on both sides of the box-shaped steel column and below the horizontal top plate, and one end of the high-side I-shaped steel is welded with two symmetrical first beam ends. The two first U-shaped steels are respectively close to the two first beam end plates and are arranged on the inner side of the high-side I-shaped steel, and are connected to the box-shaped steel column with the first beam end plate through second bolts. side;

One end of the short side I-shaped steel is welded with two symmetrical second beam end plates, and the two second U-shaped steels are respectively close to the two second beam end plates and are arranged on the inner side of the short side I-shaped steel, and is connected with the second beam end plate on the side of the box-shaped steel column through a second bolt;

Both the high-side I-shaped steel and the low-side I-shaped steel are provided with angle steels at the bottom, and two pieces of the angle steels are respectively connected on both sides of the box-shaped steel column through second bolts;

The horizontal top plate, the upper side plate of high-side I-shaped steel, and the upper side plate of the first U-shaped steel arranged in order from top to bottom are connected together by first bolts, and the lower side of the first U-shaped steel arranged in order from top to bottom The plate, the lower side plate of the high-side I-beam, and the angle steel are connected together by the first bolt, and the horizontal top plate, the upper plate of the low-side I-beam, and the second U-beam upper plate, which are arranged in sequence from top to bottom, are connected by the first bolt. To be connected together, the second U-shaped steel lower side plate, the short side I-shaped steel lower side plate and the angle steel arranged in sequence from top to bottom are connected together by first bolts.

In the connection structure of the box-shaped steel column and the unequal-height I-shaped steel beam of the present invention, the first bolts are bilateral bolts.

In the connection structure of the box-shaped steel column and the unequal-height I-shaped steel beam of the present invention, the second bolt is a unilateral bolt.

In the connection structure of the box-shaped steel column and the unequal-height I-shaped steel beam of the present invention, the triangular plate is an isosceles right-angled triangular plate.

In the connection structure of the box-shaped steel column and the unequal-height I-shaped steel beam of the present invention, the angle steel is an equilateral angle steel.

A method for installing a box-shaped steel column and an unequal-height I-shaped steel beam, comprising the following steps:

Step 1: Place the welded box-shaped steel column in place in the factory, drill holes according to the height of the I-shaped steel to be connected, reserve bolt holes, position and weld the horizontal top plate on the two opposite sides of the box-shaped steel column, and then The triangular plate is welded on the box-shaped steel column and the horizontal top plate, and then the high-side I-shaped steel and the low-side I-shaped steel are welded to the beam end plates respectively to complete the production of prefabricated components;

Step 2: Transport the prefabricated box-shaped steel columns, high-side I-beams and low-side I-beams to the construction site and hoist them into place;

Step 3: Put the first U-shaped steel, the second U-shaped steel and the angle steel in place, place the first U-shaped steel close to the end plate of the first beam and place it on the inside of the high-side I-shaped steel, and then use unilateral bolts to connect the first U-shaped steel to the third. One beam end plate is tightened on one side of the box-shaped steel column, the second U-shaped steel is placed close to the second beam end plate and placed on the inner side of the short side I-beam, and then the second U-shaped steel and the second beam end plate are tightened with unilateral bolts. On the other side of the box-shaped steel column, place two angle steels on the bottom of the high-side I-shaped steel and the low-side I-shaped steel, and tighten them with the box-shaped steel column in turn with unilateral bolts. The section steel and the horizontal top plate are screwed together, and the U-shaped steel, I-shaped steel and angle steel are screwed together to complete the installation between the box-shaped steel column and the two I-shaped steel beams of different heights.

The connection structure and installation method of the box-shaped steel column and the unequal-height I-shaped steel beam of the present invention have the following beneficial effects:

(1) The triangular plate not only improves the stability of the connection node, but also acts as a cable, sharing part of the force of the horizontal top plate; the angle steel at the bottom can play a supporting role; the beam end plate welded by the I-beam increases the work force. The connection area between the shaped steel and the box-shaped steel column makes the joint more integrated; the beam end plate and the box-shaped steel column are connected by unilateral bolts, which overcomes the difficulty of tightening the bolts inside the box-shaped steel column, and can realize one-sided installation and one-sided installation. Tightening function, so there is no need to process additional installation holes, and the bolt connection can be completed without damaging other parts of the steel pipe; compared with traditional connection nodes, the opening of construction holes for box-shaped steel columns is reduced, and the workload is reduced at the same time. It also enhances the overall performance of the component;

(2) The welding of the box-shaped steel column and the horizontal top plate and the triangular plate, the welding of the beam end plate and the I-shaped beam are all completed in the factory. The prefabricated steel and the column are hoisted and positioned at the construction site, and then the installation is completed by anchoring with bolts. Compared with the traditional connection process, on-site welding is not required, and the construction efficiency will be improved;

(3) The connection node between the box-shaped steel column and the unequal-height I-shaped steel beam adopts a horizontal roof to set a uniform height, which can meet the requirements of floor flatness, no additional leveling treatment is required, and the structure is well coordinated;

(4) The components welded on site are prone to defects caused by insufficient welding process, and factory production can ensure the overall utilization and quality control of materials, and the production environment of the factory is more conducive to quality control than the changeable on-site construction environment. It can also effectively ensure the health and safety of workers on the construction site;

(5) The connection node between the box-shaped steel column and the unequal-height I-shaped steel beam can not only exert the advantages of the combined structure, but also meet the requirements of aesthetics and functions, and at the same time, it can improve the construction speed, and the node has greater ductility and Deformation ability, to ensure construction quality and safety, can be widely used in various building structures, which greatly promotes the development of the construction industry.

Description of drawings

Fig. 1 is the perspective view of the connection structure of the box-shaped steel column of the present invention and the unequal height I-shaped steel beam;

Fig. 2 is the front view of the connection structure of the box-shaped steel column of the present invention and the unequal-height I-shaped steel beam;

Fig. 3 is the right side view of the connection structure of the box-shaped steel column of the present invention and the unequal height I-shaped steel beam;

Fig. 4 is the top view of the connection structure of the box-shaped steel column of the present invention and the unequal height I-shaped steel beam;

FIG. 5 is a schematic structural diagram of the first bolt of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in Figures 1 to 5, a connection structure between a box-shaped steel column and an I-shaped steel beam of unequal height includes a box-shaped steel column 1, a high-side I-shaped steel 2, a low-side I-shaped steel 3, and a horizontal top plate 4. , triangle plate 5, second beam end plate 6, second U-shaped steel 7, angle steel 8, first bolt 9, second bolt 10, first beam end plate 11 and first U-shaped steel 12, the first bolt 9 is a bilateral bolt , the second bolt 10 is a unilateral bolt, the triangular plate 5 is an isosceles right-angled triangular plate, the angle steel 8 is an equilateral angle steel, both sides of the box-shaped steel column 1 are vertically welded with a horizontal top plate 4 and a triangular plate 5, and the triangular plate 5 is vertically welded on the horizontal top plate 4 The upper end face; the high-side I-beam 2 and the short-side I-beam 3 are respectively arranged on both sides of the box-shaped steel column 1 and below the horizontal top plate 4, and one end of the high-side I-beam 2 is welded with two symmetrical first beam ends Plate 11, two first U-shaped steels 12 are respectively close to the two first beam end plates 11 and are arranged on the inner side of the high-side I-shaped steel 2, and are connected with the first beam end plate 11 through the second bolt 10 on the side of the box-shaped steel column 1 One end of the short side I-beam 3 is welded with two symmetrical second beam end plates 6, and the two second U-shaped steels 7 are respectively close to the two second beam end plates 6 and are located on the inner side of the short side I-beam 3, and with The second beam end plate 6 is connected to the side of the box-shaped steel column 1 by the second bolt 10; the bottom of the high-side I-beam 2 and the low-side I-beam 3 are provided with angle steel 8, and the two angle steels 8 are respectively connected by the second bolt 10. On both sides of the box-shaped steel column 1; the horizontal top plate 4, the upper side plate of the high-side I-shaped steel 2, and the upper side plate of the first U-shaped steel 12, which are arranged in order from top to bottom, are connected together by the first bolts 9, in order from top to bottom. The lower side plate of the first U-shaped steel 12, the lower side plate of the high-side I-shaped steel 2, and the angle steel 8 are connected together by the first bolt 9, and the horizontal top plate 4 and the upper side of the short-side I-shaped steel 3 are arranged in order from top to bottom. The plate and the upper side plate of the second U-shaped steel 7 are connected together by the first bolt 9, and the lower side plate of the second U-shaped steel 7, the lower side plate of the short side I-shaped steel 3, and the angle steel 8, which are arranged in sequence from top to bottom, are passed through the first bolt 9. connected. The idea of factory prefabricated on-site bolt connection is adopted, which improves the construction speed. The triangle plate 5 not only improves the stability of the connection node, but also acts as a cable, sharing a part of the force of the horizontal top plate 4; the angle steel 8 at the bottom can play a supporting role; the beam end plate welded by the I-beam increases the work force. The connection area between the shaped steel and the box-shaped steel column 1 makes the joint more integrated; the beam end plate and the box-shaped steel column 1 are connected by unilateral bolts, which overcomes the difficulty of tightening the bolts inside the box-shaped steel column 1, and can be installed on one side , One-side tightening function, so there is no need to process additional installation holes, and the bolt connection can be completed without damaging other parts of the steel pipe; compared with traditional connection nodes, the opening of construction holes for box-shaped steel columns is reduced. It also enhances the performance of the components; the structural coordination is good; the construction speed is improved, and the nodes have greater ductility and deformation capacity, ensuring the construction quality and safety.

A method for installing a box-shaped steel column and an unequal-height I-shaped steel beam, comprising the following steps: placing the welded box-shaped steel column 1 in place in a factory, drilling holes according to the height of the I-shaped steel to be connected, and reserving Out the bolt holes, position and weld the horizontal top plate 4 on the two opposite sides of the box-shaped steel column 1, then weld the triangular plate 5 on the box-shaped steel column 1 and the horizontal top plate 4, and then weld the high-side I-beam 2 and the low-side I-beam steel. 3 respectively welded with the beam end plate 6 to complete the production of prefabricated components; transport the prefabricated box-shaped steel column 1, high-side I-beam 2 and low-side I-beam 3 to the construction site and hoist it in place; The U-shaped steel 12, the second U-shaped steel 7 and the angle steel 8 are in place, the first U-shaped steel 12 is placed close to the first beam end plate 11 and placed on the inside of the high-side I-shaped steel 2, and then the first U-shaped steel 12 is connected with the unilateral bolts. The first beam end plate 11 is tightened on one side of the box-shaped steel column 1, the second U-shaped steel 7 is placed close to the second beam end plate 6 and placed on the inner side of the short side I-shaped steel 3, and then the second U-shaped steel 7 is connected with the unilateral bolts. The second beam end plate 6 is tightened on the other side of the box-shaped steel column 1, and then two angle steels 8 are placed on the bottom of the high-side I-shaped steel 2 and the short-side I-shaped steel 3, and are screwed with the box-shaped steel column 1 in turn with unilateral bolts. Together, the U-shaped steel, I-shaped steel, and horizontal top plate 4 are screwed together with bilateral bolts, and the U-shaped steel, I-shaped steel, and angle steel 8 are screwed together, and the box-shaped steel column and the two unequal heights are completed. Installation between beam steel beams.

Examples are only examples, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. A connecting structure of a box steel column and a non-equal-height I-shaped steel beam is characterized by comprising a box steel column (1), a high-side I-shaped steel (2), a low-side I-shaped steel (3), a horizontal top plate (4), a triangular plate (5), a second beam end plate (6), a second U-shaped steel (7), angle steel (8), a first bolt (9), a second bolt (10), a first beam end plate (11) and a first U-shaped steel (12),

a horizontal top plate (4) and a triangular plate (5) are vertically welded on two sides of the box-type steel column (1), and the triangular plate (5) is vertically welded on the upper end face of the horizontal top plate (4);

the high-side I-shaped steel (2) and the low-side I-shaped steel (3) are respectively arranged on two sides of the box-shaped steel column (1) and are positioned below the horizontal top plate (4), two symmetrical first beam end plates (11) are welded at one end of the high-side I-shaped steel (2), the two first U-shaped steels (12) are respectively arranged on the inner side of the high-side I-shaped steel (2) by being close to the two first beam end plates (11) and are connected with the first beam end plates (11) on the side of the box-shaped steel column (1) through second bolts (10);

one end of the short side I-shaped steel (3) is welded with two symmetrical second beam end plates (6), the two second U-shaped steel (7) are respectively arranged on the inner sides of the short side I-shaped steel (3) by being close to the two second beam end plates (6) and are connected with the second beam end plates (6) on the sides of the box-shaped steel columns (1) through second bolts (10);

the bottom parts of the high-side I-shaped steel (2) and the low-side I-shaped steel (3) are respectively provided with an angle steel (8), and the two angle steels (8) are respectively connected to two sides of the box-shaped steel column (1) through second bolts (10);

arrange from top to bottom in proper order horizontal roof (4), high side I-shaped steel (2) roof boarding, first U shaped steel (12) roof boarding link together through first bolt (9), arrange from top to bottom in proper order first U shaped steel (12) lower sideboard, high side I-shaped steel (2) lower sideboard, angle steel (8) link together through first bolt (9), arrange from top to bottom in proper order horizontal roof (4), short side I-shaped steel (3) roof boarding, second U shaped steel (7) roof boarding link together through first bolt (9), arrange from top to bottom in proper order second U shaped steel (7) lower sideboard, short side I-shaped steel (3) lower sideboard, angle steel (8) link together through first bolt (9).

2. The connection structure of the box-type steel column and the unequal-height I-shaped steel beam according to claim 1, wherein the first bolt (9) is a double-sided bolt.

3. The connection structure of the box-type steel column and the unequal-height I-shaped steel beam according to claim 1, wherein the second bolt (10) is a single-side bolt.

4. The connection structure of the box-type steel column and the unequal-height I-shaped steel beam according to claim 1, wherein the triangular plate (5) is an isosceles right-angle triangular plate.

5. The connection structure of the box-type steel column and the unequal-height I-shaped steel beam according to claim 1, wherein the angle steel (8) is an equilateral angle steel.

6. A method for mounting a box steel column and an unequal-height I-shaped steel beam is characterized by comprising the following steps of:

the method comprises the following steps: the method comprises the following steps of (1) placing a welded box type steel column (1) in place in a factory, drilling according to the height of I-shaped steel connected as required, reserving bolt holes, welding a horizontal top plate (4) on two opposite side surfaces of the box type steel column (1) in a positioning manner, then welding a triangular plate (5) on the box type steel column (1) and the horizontal top plate (4), and then welding a high-side I-shaped steel (2) and a low-side I-shaped steel (3) with a beam end plate (6) respectively to complete the manufacturing of a prefabricated part;

step two: transporting the prefabricated box steel column (1), the high-side I-shaped steel (2) and the low-side I-shaped steel (3) to a construction site and hoisting in place;

step three: putting a first U-shaped steel (12), a second U-shaped steel (7) and angle steel (8) in place, putting the first U-shaped steel (12) close to a first beam end plate (11) and placing the first U-shaped steel (12) and the first beam end plate (11) on the inner side of a high-side I-shaped steel (2), screwing the first U-shaped steel (12) and the first beam end plate (11) on one side of a box-shaped steel column (1) by using a single-side bolt, putting the second U-shaped steel (7) close to a second beam end plate (6) and placing the second beam end plate (6) on the inner side of a low-side I-shaped steel (3), screwing the second U-shaped steel (7) and the second beam end plate (6) on the other side of the box-shaped steel column (1) by using a single-side bolt, placing two angle steel (8) at the bottoms of the high-side I-shaped steel (2) and the low-side I-shaped steel (3), screwing the second U-shaped steel (7) and the, The I-shaped steel and the angle steel (8) are screwed together, and the installation between the box-type steel column and the two I-shaped steel beams with different heights is completed.

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