CN211548381U - Corrugated web steel-wood composite beam and assembly joint - Google Patents

Abstract

The utility model discloses a corrugated web steel-wood composite beam and an assembly node. The steel-wood composite beam is composed of upper and lower wooden boards and a middle corrugated web steel beam, and epoxy resin is passed between the wooden boards and the corrugated web steel beam. The glue is connected with wood screws arranged at a certain distance on the flange, and the assembly nodes are the connection nodes between steel-wood composite beams and between beams and columns, including box-type connectors and high-strength bolts, box-type connectors and steel beams The flanges and boards are connected by high-strength bolts. Compared with the existing I-shaped steel-wood composite beam, the corrugated web steel-wood composite beam proposed by the utility model has the characteristics of high rigidity, high shear strength, good lateral torsion resistance and good stability; The box-type connector connection does not need to weld steel plates on the corrugated web as the connecting plate, which improves the freedom of the web wave design. The pure bolt connection also avoids the fire danger caused by the welding operation in the construction of wooden structures, and the construction is simple and convenient. Safe and suitable for assembly work.

Description

Corrugated web steel-wood composite beams and assembly nodes

technical field

The utility model relates to the field of construction, in particular to a corrugated web steel-wood composite beam and an assembly node.

Background technique

Wood is a green, environmentally friendly and beautiful renewable resource. The development of prefabricated wood structure buildings is changing with each passing day, and the building height and number of floors are constantly increasing. At the same time, higher requirements are placed on the bearing capacity of wood components. The tensile and compressive properties of wood along the grain are good, but the shear resistance is poor, and it is prone to brittle fracture. Steel has the advantages of high strength, light weight and good ductility. Taking advantage of the performance advantages of the two building materials, wood and steel, people have invented a steel-wood composite beam, the upper and lower are wooden boards, and the middle is an I-shaped steel beam. The problem of too large section size. However, the steel beam used in the existing steel-wood composite beam has an I-shaped section, and the moment of inertia of the two main axes of the I-shaped section is very different. When there is a large lateral force, the steel-wood composite beam is prone to lateral displacement or twisting deformation outside its main stiffness plane, resulting in the beam losing its bearing capacity at an extremely fast speed and lateral torsional instability, thus limiting the The use of steel-wood composite beams in multi-high-rise wooden buildings.

SUMMARY OF THE INVENTION

The purpose of the utility model is to overcome the deficiencies of the existing steel-wood composite beam, and propose a corrugated web steel-wood composite beam with good bearing performance, strong shear resistance and lateral torsion resistance, and a matching box-type connector assembly node.

The utility model is realized by the following technical solutions: a corrugated web steel-wood composite beam and an assembly node, characterized in that: the corrugated web steel-wood composite beam comprises an upper layer of wood, a lower layer of wood, and a middle corrugated web of steel The beam, the upper plank, the lower plank and the corrugated web steel beam are connected by epoxy resin glue and wood screws arranged at a certain distance on the upper and lower flanges to form a steel-wood composite beam; the assembly node is a steel-wood composite beam The connection nodes between the steel-wood composite beams and the wood columns, each connection node is connected by box-type connectors and high-strength bolts, the box-type connectors and the upper and lower flanges of the corrugated web steel beam, as well as the upper and lower wooden boards They are connected by high-strength bolts.

The connection form between the steel-wood composite beams of the present utility model includes the horizontal parallel connection between the steel-wood composite beams and the vertical direction connection between the ends of the steel-wood composite beams; the horizontal parallel connection between the steel-wood composite beams The vertical connection between the end of the steel-wood composite beam is to install first box-type connectors on both sides of the end of the corrugated web steel beam connected end-to-end, and the first high-strength bolts are used to connect the two first box-type connectors. The connecting piece is connected with the upper and lower flanges of the corrugated web steel beams of the two steel-wood composite beams, the upper layer of wood and the lower layer of wood to form a solid whole.

Another vertical connection between the steel-wood composite beams of the present invention is to install first box-type connectors on both sides where the middle of the corrugated web steel beam and the end of the vertical corrugated web steel beam are connected respectively. , and the first high-strength bolts are used to connect the two first box-type connectors with the upper and lower flanges of the corrugated web steel beams of the two steel-wood composite beams, the upper layer of wood, and the lower layer of wood into a solid whole.

The connecting node between the steel-wood composite beam and the wooden column of the utility model is that second box-type connectors are respectively installed on both sides of the end of the steel-wood composite beam, and the first high-strength bolts are used to connect the two second box-type connectors. The upper and lower flanges of the corrugated web steel beam of the steel-wood composite beam, the upper plank, and the lower plank are connected, and the second high-strength bolts are used to connect the two second box-type connectors and the wooden column to form a solid whole .

The first box-type connecting piece and the second box-type connecting piece of the utility model both include a back plate, an upper and lower top plate, and left and right side plates. The heights of the webs of the beams are the same; bolt holes reserved for the first high-strength bolts are respectively set at the upper and lower top plates of the first and second box-type connectors connected to the corrugated web steel beams; Bolt holes reserved for second high-strength bolts are arranged at one side plate of the second box-type connector connected to the wooden columns.

The utility model is provided with a groove at the connection between the front end of the lower top plate and the side plate of the first box-type connecting piece, so as to avoid the possible occurrence of the connection between the first box-type connecting piece and the steel-wood composite beam with the screw head of the wood screw. Spatial position conflicts; slot holes are respectively provided at the middle position of the upper and lower top plates of the second box-type connector and where it is connected with the back plate, to avoid the possibility of wood screws when the second box-type connector is connected to the steel-wood composite beam. The spatial position of the screw head conflicts.

According to the invention, the upper wooden board and the lower wooden board are correspondingly set as the bolt holes reserved for the first high-strength bolts. The bolt holes are divided into upper and lower sections along the thickness direction of the wooden boards. The height of the head is the same, the diameter of the bolt hole is the same as the diagonal width of the head of the first high-strength bolt, the depth of the bolt hole in the second section is the difference between the thickness of the board and the height of the head of the first high-strength bolt, and the diameter of the bolt hole is the same as that of the first high-strength bolt. The screw diameters of the first high-strength bolts are the same.

The corrugated web steel beam of the utility model is H-shaped steel, the material is carbon steel, and the web form adopts any one of wave shape, broken line shape, trapezoid shape, curve shape, rectangle shape and broken line shape; Wood screw holes are arranged on the upper and lower flanges at a certain distance along the length of the steel beam, and bolt holes reserved for the first high-strength bolts are arranged at the four corners of the upper and lower flanges of the corrugated web steel beam.

The upper-layer wooden board and the lower-layer wooden board of the utility model can be any one of glued wood, square wood and log.

Compared with the prior art, the utility model has the following beneficial effects:

The corrugated web steel-wood composite beam proposed by the utility model has the characteristics of high rigidity, high shear strength, good lateral torsion resistance and good stability; the matching pure bolt assembly nodes are connected with the flanges of the beam by using box-type connectors , There is no need to weld steel plates on the corrugated webs as connecting plates, which greatly improves the freedom of web wave design. The pure bolt connection form avoids the fire danger caused by welding operations in the construction of wooden structures. The construction is simple and safe, and it is suitable for assembly. Operation.

Description of drawings

1 is a schematic diagram of the effect of a typical corrugated web steel-wood composite beam of the present utility model;

2 is a schematic diagram of a typical corrugated web steel beam of the present utility model;

3 is a schematic exploded view of the corrugated web steel-wood composite beam of the present invention;

Figure 4 is a schematic cross-sectional view of the upper plank along the bolt hole;

5 is a schematic diagram of a first box-type connector;

Fig. 6 is the exploded schematic diagram of horizontal connection of two steel-wood composite beams;

Figure 7 is a schematic diagram of the effect of horizontally connecting two steel-wood composite beams;

Figure 8 is a schematic diagram of a vertical connection effect of two steel-wood composite beams;

9 is an enlarged view of a vertical connection node;

10 is a schematic diagram of a first box-type connector with grooves;

Figure 11 is a schematic diagram of another vertical connection effect of two steel-wood composite beams;

Figure 12 is an exploded schematic view of the connection between a steel-wood composite beam and a wooden column;

Figure 13 is a schematic diagram of the effect of the connection between the steel-wood composite beam and the wooden column;

Figure 14 is a schematic diagram of the second box-type connector;

Fig. 15 is a schematic diagram of the effect after the wooden column and a plurality of corrugated web steel-wood composite beams are assembled.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 15, the corrugated web steel-wood composite beam of this design includes an upper layer of wood 21, a lower layer of wood 22 and a middle corrugated web steel beam 1, an upper layer of wood 21, a lower layer of wood 22 and a corrugated web steel beam 1 is connected by epoxy resin glue and wood screws 31 arranged at a certain distance on the upper flange 1-1 and the lower flange 1-2 to form a steel-wood composite beam; the assembly nodes are between the steel-wood composite beams, The connection node between the steel-wood composite beam and the wooden column 61, each connection node is connected by a box-type connector and high-strength bolts, the box-type connector and the upper flange 1-1 and the lower flange of the corrugated web steel beam 1 1-2, the upper layer of wood 21, and the lower layer of wood are connected by high-strength bolts.

As shown in Figures 6 to 9, the connection forms between the steel-wood composite beams include the horizontal connection between the steel-wood composite beams and the vertical connection between the ends of the steel-wood composite beams; the connection between the steel-wood composite beams The horizontal connection and the vertical connection between the ends of the steel-wood composite beam are installed on both sides of the end of the corrugated web steel beam connected end to end. The two first box-type connectors 51 are connected to the upper flange 1-1, the lower flange 1-2, the upper wooden board 21 and the lower wooden board 22 of the corrugated web steel beam 1 of the two steel-wood composite beams to form a firm structure. Overall (in Figure 6, the first box-type connector 51 is installed on both sides of the web end at the connection of the two steel-wood composite beams. For the convenience of intuitive understanding, only one side of the first box-type connector is shown in this figure. 51).

As shown in Figure 11, another vertical connection between steel-wood composite beams is to install first box-type connections on both sides where the middle of the corrugated web steel beam meets the end of the vertical corrugated web steel beam 51, and use the first high-strength bolts 41 to connect the two first box-type connectors 51 to the upper flange 1-1, the lower flange 1-2, the upper flange of the corrugated web steel beam 1 of the two steel-wood composite beams The wooden boards 21 and the lower wooden boards 22 are connected to form a solid whole.

As shown in Fig. 12, Fig. 13 and Fig. 15, the connection node between the steel-wood composite beam and the wooden column 61 is to install second box-type connectors 53 on both sides of the steel-wood composite beam end, and adopt the first high-strength Bolts 41 connect the two second box-type connectors 53 to the upper flange 1-1, lower flange 1-2, upper plank 21, and lower plank 22 of the corrugated web steel beam 1 of the steel-wood composite beam. Two high-strength bolts connect the two second box-type connectors 53 and the wooden column 61 into a solid whole.

As shown in Figure 5, Figure 12, Figure 14, Figure 15, the first box-type connector includes a first back plate 51-1, a first upper and lower top plate 51-2, and a first left and right side plate 51-3. The second box The type connector includes a second back plate 53-1, a second upper and lower top plate 53-2, and a second left and right side plate 53-3. The height of the first box-type connector 51 and the second box-type connector 53 is related to the corrugated web. The heights of the webs 1-3 of the steel beam 1 are the same; The first bolt hole 44 and the second bolt hole 45 reserved for the first high-strength bolt are respectively arranged at the top plate 53-2; the third bolt hole 47 reserved for the second high-strength bolt is arranged on the wooden column 61, and the A fourth bolt hole 46 reserved for a second high-strength bolt is provided at one side plate 53 - 3 of the second box-type connecting member 53 connected to the columns.

As shown in FIGS. 10 and 14 , a groove 52 is provided at the connection between the front end of the upper and lower top plates 51-2 of the first box-type connector 1 and the side plate 51-3, so as to avoid the first box-type connector 51 and the steel wood When the composite beam is connected, it may conflict with the spatial position of the screw head of the wood screw 31; The slotted hole 54 avoids the spatial position conflict with the screw head of the wood screw 31 that may occur when the second box-type connecting piece 53 is connected to the steel-wood composite beam.

As shown in Figure 1, Figure 3, Figure 6, Figure 8, Figure 11, Figure 12, Figure 13, the upper wooden board 21 and the lower wooden board 22 are correspondingly provided with fifth bolt holes 43 reserved for the first high-strength bolts. The thickness direction of the board is divided into upper and lower sections. The depth of the bolt hole of the first section 43-1 is the same as the height of the head of the first high-strength bolt 41, and the diameter of the bolt hole is diagonal to the head of the first high-strength bolt 41. The width is the same, the depth of the bolt hole of the second section 43-2 is the difference between the thickness of the board and the height of the screw head of the first high-strength bolt, and the diameter of the bolt hole is the same as the diameter of the screw of the first high-strength bolt 41 .

As shown in Figures 1 to 3, wood screw holes 32 are arranged at a certain distance along the length of the steel beam on the upper flange 1-1 and the lower flange 1-2 of the corrugated web steel beam 1, and the corrugated web The four corners of the upper flange 1-1 and the lower flange 1-2 of the steel beam 1 are set as sixth bolt holes 42 reserved for the first high-strength bolts.

Example 1:

As shown in Figure 1, a typical steel-wood composite beam in this design is composed of corrugated web steel beam 1, upper plank 21, lower plank 22 and wood screws 31. The upper and lower planks are made of glulam. The webs 1-3 can be designed in wave shape, broken line shape, trapezoidal shape, curved shape, rectangle shape and broken line shape.

As shown in FIG. 2 , the upper flange 1-1 and the lower flange 1-2 of the corrugated web steel beam 1 are provided with screw holes 32 for wood screws 31 at a certain distance, and the four corners of the steel beam flange are set as The sixth bolt hole 42 reserved for the first high-strength bolt. For ease of understanding, here is an example of setting a bolt hole at each corner. In the actual project, additional bolt holes can be added to the upper and lower flanges according to the size of the components, the load-bearing conditions and the connection between components (see the following implementation). Example 3, Example 4 and Example 5).

As shown in FIG. 3 , which is an exploded schematic view of a steel-wood composite beam, the four corners of the upper and lower wooden boards are provided with fifth bolt holes 43 reserved for the first high-strength bolts.

As shown in Figure 4, this figure is a cross-sectional view of the upper wooden board along the bolt hole 43. The bolt hole is divided into upper and lower sections along the thickness direction of the board. The depth of the bolt hole of the first section 43-1 is the same as that of the first high-strength bolt. The height of the screw head of 41 is the same, the diameter of the bolt hole is the same as the diagonal width of the screw head of the first high-strength bolt 41, and the depth of the bolt hole of the second section 43-2 is the thickness of the board and the head height of the first high-strength bolt. The difference is that the diameter of the bolt hole is the same as the diameter of the screw of the first high-strength bolt 41 . Thereby, the surface of the wooden board is guaranteed to be flat after the first high-strength bolts 41 are installed, which is convenient for laying floor slabs or wall boards on the wooden boards in the later stage. The lower plank and the upper plank are mirror-symmetrical.

Example 2:

As shown in Fig. 5, the first box-type connector 51 includes a back plate 51-1, an upper and lower top plate 51-2, and left and right side plates 51-3. The upper and lower top plates 51-2 are provided with first bolts reserved for the first high-strength bolts hole 44.

As shown in Figures 6 and 7, when two steel-wood composite beams are connected in a horizontal direction, a first box-type connector 51 is installed on both sides of the webs 1-3 at the joint, and a first box-type connector is used. The high-strength bolts 41 connect the first box-type connecting piece 51 , the upper and lower flanges of the corrugated web steel beam 1 , the upper wooden boards 21 and the lower wooden boards 22 into a solid whole. The first back plate 51-1 and the first upper and lower top plates 51-2 of the first box-type connector 51 can provide better shear resistance at the connection, and the left and right side plates 51-3 are similar to the stiffeners at the beam ends, so that the entire joint is The connection area has greater stiffness.

Example 3:

As shown in FIG. 8 , when two steel-wood composite beams are connected in a vertical direction, and the connection is made at the ends of the two beams, a bolt of the first high-strength bolt 41 needs to be pre-installed on one of the beams. Holes (including steel beams and upper and lower planks). In the actual engineering of multi-story wood structures, this type of vertical connection is basically the connection between the main beam and the secondary beam, and the additional bolt holes should be set on the main beam.

As shown in FIG. 9 and FIG. 10 , the first box-type connector 51 is in conflict with the spatial position of the head of a wood screw 31 of the beam, and a groove 52 is opened on the first box-type connector, so that the first box-type connector can be assembled. The box-type connector 51 avoids the screw head of the wood screw 31 , so as to realize the tight fit between the first box-type connector 51 and the flange of the steel beam 1 .

Example 4:

As shown in Figure 11, when two steel-wood composite beams are connected in a vertical direction, and the connection is made in the middle of one of the beams, two bolt holes for the first high-strength bolts 41 ( Including steel beams and upper and lower planks). In the actual engineering of multi-high-rise wood structures, this type of vertical connection is basically the connection between the primary and secondary beams, and this bolt hole should be set on the primary beam.

Example 5:

As shown in Fig. 12, Fig. 13 and Fig. 14, when the steel-wood composite beam is connected with the wooden column 61, the wooden column and the steel-wood composite beam are connected by the second box-type connecting piece 53 and the second high-strength bolt 35, in order to strengthen the For the connection between the beam and the wooden column, two bolt holes for the first high-strength bolts 41 (including the steel beam and the upper and lower planks) are pre-installed at the end of this type of beam, so that each flange of the beam member can be provided with two bolt holes. The first high-strength bolts are connected. In addition to the second bolt holes 45 reserved for the first high-strength bolts on the top plate of the second box-type connector 53 , a second high-strength bolt 35 for connecting wooden columns and beams is also provided on a side plate. the fourth bolt hole 46. Third bolt holes 47 reserved for second high-strength bolts are arranged on the wooden post 61 . When the second box-type connector 53 conflicts with the spatial position of the head of a wood screw 31 of the beam, a slotted hole 54 is formed on the box-type connector, so as to avoid the wood screw 31 when assembling the box-type connector. The screw head realizes the tight fit between the box-type connector and the flange of the steel beam and the wooden column.

It should be noted that this embodiment is one of the connection forms of the wooden column and the steel-wood composite beam, and the two can also use the wooden column to be arranged at the lower part of the steel-wood composite beam, and the top of the wooden column to be attached to the lower layer of the steel-wood composite beam. The conventional T-shaped/U-shaped connector and high-strength bolt connection are combined. Since this connection form is relatively simple, the present utility model will not repeat them.

Example 6:

As shown in Figure 15, this figure combines beam-to-beam horizontal connection, beam-to-beam vertical connection, and wood-column connection.

Claims (9)

1. The utility model provides a corrugated web steel-wood composite beam and assembly node which characterized in that: the corrugated web steel-wood composite beam comprises an upper layer wood board, a lower layer wood board and a middle corrugated web steel beam, wherein the upper layer wood board, the lower layer wood board and the corrugated web steel beam are connected through epoxy resin glue and wood screws arranged on upper and lower flanges at certain intervals to form the steel-wood composite beam; the assembly nodes are connection nodes between the steel-wood composite beams and the wood columns, each connection node is connected through a box-type connecting piece and a high-strength bolt, and the box-type connecting pieces are connected with the upper flange and the lower flange of the corrugated web steel beam and the upper layer wood board and the lower layer wood board through high-strength bolts.

2. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 1, wherein: the connection form between the steel-wood composite beams comprises horizontal forward connection between the steel-wood composite beams and vertical connection at the end parts between the steel-wood composite beams; the horizontal forward connection between the steel-wood composite beams and the vertical connection between the end parts of the steel-wood composite beams are respectively provided with first box-type connecting pieces at two sides of the end parts of the corrugated web steel beams connected end to end, and the two first box-type connecting pieces are respectively connected with the upper flange, the lower flange, the upper plank and the lower plank of the corrugated web steel beams of the two steel-wood composite beams into a firm whole by adopting first high-strength bolts.

3. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 1, wherein: the other vertical connection between the steel-wood composite beams is characterized in that first box-type connecting pieces are respectively arranged on two sides of the middle part of the corrugated web steel beam connected with the end part of the corrugated web steel beam in the vertical direction, and the two first box-type connecting pieces are connected with the upper flange, the lower flange, the upper plank and the lower plank of the corrugated web steel beam of the two steel-wood composite beams into a firm whole by adopting first high-strength bolts.

4. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 1, wherein: the connecting joint between the steel-wood composite beam and the wood column is characterized in that second box-type connecting pieces are respectively arranged on two sides of the end part of the steel-wood composite beam, the two second box-type connecting pieces are connected with the upper flange, the lower flange, the upper plank and the lower plank of the corrugated web steel beam of the steel-wood composite beam through first high-strength bolts, and the two second box-type connecting pieces and the wood column are connected into a firm whole through second high-strength bolts.

5. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 4, wherein: the first box-type connecting piece and the second box-type connecting piece both comprise a back plate, an upper top plate, a lower top plate, a left side plate and a right side plate, and the heights of the first box-type connecting piece and the second box-type connecting piece are the same as the height of a web plate of the corrugated web plate steel beam; the upper top plate and the lower top plate of the first box-type connecting piece and the second box-type connecting piece which are connected with the corrugated web steel beam are respectively provided with a reserved bolt hole of a first high-strength bolt; on the post to and all set up the bolt hole that the second bolt that excels in reserved with a curb plate department of the second box connecting piece that the post links to each other.

6. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 5, wherein: a groove is formed at the joint of the front ends of the upper and lower top plates of the first box-type connecting piece and one side plate, so that the space position conflict with the screw head of a wood screw, which may occur when the first box-type connecting piece is connected with the steel-wood composite beam, is avoided; slotted holes are respectively formed in the middle positions of the upper top plate and the lower top plate of the second box-type connecting piece and the connecting position of the upper top plate and the lower top plate of the second box-type connecting piece and the back plate, so that the spatial position conflict with the screw head of the wood screw, which possibly occurs when the second box-type connecting piece is connected with the steel-wood composite beam, is avoided.

7. The corrugated web steel-wood composite beam and assembly joint as claimed in any one of claims 1 to 4, wherein: the bolt hole that upper plank, lower floor's plank correspondence set up to first high strength bolt and reserve, and the bolt hole divide into two upper and lower sections along plank thickness direction, and the bolt hole degree of depth of first section is the same with the height of the spiral shell head of first high strength bolt, and the diameter of bolt hole is the same with the spiral shell head diagonal width of first high strength bolt, and the bolt hole degree of depth of second section is the difference of the spiral shell head height of plank thickness and first high strength bolt, and the diameter of bolt hole is the same with the screw rod diameter of first high strength bolt.

8. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 1, wherein: the corrugated web steel beam is H-shaped steel, the material is carbon steel, and the web is in any one of wave shape, fold line shape, trapezoid shape, curve shape, rectangle shape and fold line shape; set up the wood screw hole along girder steel length direction interval certain distance on the upper and lower edge of a wing of corrugated web girder steel to four bights on the upper and lower edge of a wing of corrugated web girder steel set up the bolt hole that first high-strength bolt reserved.

9. The corrugated web steel-wood composite beam and the assembly joint as claimed in claim 1, wherein: the upper layer wood board and the lower layer wood board can be made of any one of glued wood, square wood and log.

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