Movable truss beam connection node based on wall arrangement

Abstract

This utility model discloses a movable truss beam connection node based on wall arrangement, including two main steel beams arranged parallel in the front-to-back direction, and a truss beam component arranged in the left-to-right direction connecting the two main steel beams. The truss beam component is detachably connected to the main steel beam through independent supports. The main steel beam is provided with several connection positions for connecting with the truss beam component, and multiple bolt connection holes are pre-fabricated in the connection positions, and the horizontal width of the connection position is adapted to the width of the support. This utility model can flexibly adjust the installation position of the load-bearing beam according to the upper wall, thereby flexibly adjusting the interior space layout and significantly improving the indoor acoustic environment quality of steel structure houses.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and specifically to a movable truss beam connection node based on wall arrangement. Background Technology

[0002] In building structures, load-bearing beams are typically installed below the upper walls to support them. To ensure load-bearing capacity, traditional load-bearing beams are often cast integrally with the concrete structure or are made of heavy, solid-web steel beams. While these traditional steel load-bearing beams are strong, they are mostly fixed to the main steel beams by welding connecting plates, resulting in inflexible connections that cannot be easily adjusted to meet needs after construction. Furthermore, traditional laterally welded connecting plates often extend beyond the cross-section of the main beam, easily causing spatial interference with floor slabs, pipelines, and other components, increasing the complexity of on-site installation. Traditional steel load-bearing beams are mostly heavy, solid-web steel beams, requiring large machinery for installation and dismantling, leading to difficulties in reinstallation after dismantling and affecting the installation of other work processes, making reinstallation extremely difficult.

[0003] In addition, steel is a good sound bridge. The rigid connection between components makes it easy for solid-borne sound, such as impact sound, to be transmitted along steel components such as beams and columns inside the building, affecting the indoor acoustic environment. Utility Model Content

[0004] This utility model proposes a movable truss beam connection node based on wall arrangement. Its purpose is to solve the problems of traditional load-bearing beams being unable to adapt to indoor space layout adjustments due to inflexible connection methods, heavy weight and difficulty in installation and dismantling, as well as the problem of connection nodes forming sound bridges that affect the indoor acoustic environment.

[0005] The technical solution of this utility model is as follows: A movable truss beam connection node based on wall arrangement includes two main steel beams arranged parallel in the front-to-back direction, and a truss beam component arranged in the left-to-right direction connecting the two main steel beams; characterized in that: the truss beam component is detachably connected to the main steel beam through independent supports; the main steel beam is provided with a number of connection positions for connecting with the truss beam component, and the connection positions are pre-fabricated with multiple bolt connection holes, and the horizontal width of the connection position allows the support to be inserted and positioned; the truss beam component includes an upper chord and a lower chord, which are arranged parallel vertically.

[0006] As a further improvement of this utility model, the main steel beam is a hot-rolled or welded steel beam with a king-shaped cross section. The cross section of the main steel beam includes an upper flange, a middle flange, and a lower flange from top to bottom. In the web area between the upper flange and the middle flange, and between the middle flange and the lower flange, multiple sets of vertical stiffening ribs are symmetrically welded on both sides, and the stiffening ribs in the upper and lower spaces correspond one-to-one. The connection position is located between the middle flange and the lower flange and is defined by two adjacent stiffening ribs.

[0007] As a further improvement of this utility model, the ends of the upper chord and the lower chord are welded with sealing plates, and horizontally arranged end connecting plates are welded to both ends of the bottom surface of the upper chord. The sealing plates and the end connecting plates work together to strengthen the local stiffness and connection strength of the ends of the truss beam components. The upper chord and the lower chord are fixedly connected by a number of diagonal web members connected end to end, forming a stable triangular truss unit.

[0008] As a further improvement of this utility model, the upper chord, lower chord, and diagonal web members are all made of rectangular hollow steel tubes; the cross-sectional dimensions of the upper chord are larger than those of the lower chord and diagonal web members, and the area ratio of the upper chord cross-section to the lower chord or diagonal web cross-section is between 1.5 and 2.5.

[0009] As a further improvement of this utility model, the length of the upper chord is greater than the length of the lower chord.

[0010] As a further improvement of this utility model, the support includes an upper plate, a vertical plate and a lower plate. The upper plate and the lower plate are arranged parallel to each other and are fixed by welding the vertically arranged vertical plate to form a stable inverted wedge-shaped component. A stiffening plate is also welded between the lower plate and the upper plate, and one side of the stiffening plate is welded and fixed perpendicularly to the vertical plate.

[0011] As a further improvement of this utility model, bolt holes are provided on the upper plate, and the position and diameter of the holes correspond one-to-one with the bolt connection holes on the end connecting plate of the truss beam component; bolt holes are also provided on the vertical plate, and the position and diameter of the holes correspond one-to-one with the prefabricated bolt holes in the connecting position on the web of the main steel beam.

[0012] As a further improvement of this utility model, sound insulation pads are fixed on the contact surfaces of the top of the upper chord of the truss beam component with the floor slab and the middle flange of the main steel beam, the contact surfaces of the vertical plate of the support with the main steel beam, the contact surfaces of the lower plate of the support with the main steel beam, and between the main steel beam and the bolt.

[0013] As a further improvement of this utility model, the sound insulation pad is made of rigid polyurethane elastomer; the thickness of the pad fixed on the horizontal force-bearing surface is designed to be 10 mm; the thickness of the pad fixed on the vertical non-main pressure-bearing surface is designed to be 6 mm.

[0014] Compared with the prior art, the present invention has the following advantages: (1) In this embodiment of the utility model, the truss beam component is detachably connected to the main steel beam through independent supports, and by setting multiple standardized connection positions defined by stiffening ribs on the main steel beam and pre-fabricating bolt hole groups in the connection positions, the reliable installation and convenient relocation of the truss beam component are realized.

[0015] (2) In this embodiment of the utility model, the truss beam body adopts a lightweight planar truss structure, and the members are made of rectangular hollow steel pipes with differentiated cross-section design, which achieves overall lightweighting while ensuring load-bearing capacity. This makes on-site relocation and installation do not require large hoisting equipment, but can be completed using only small tools, which significantly reduces the threshold and cost of modification.

[0016] (3) In the embodiment of this utility model, the length of the upper chord of the truss beam component is greater than the length of the lower chord, and a stable triangular unit is formed by the diagonal web members, which can effectively control the deformation of the upper chord, ensure that the upper chord is closely attached to the upper floor slab, and reliably transmit the load.

[0017] (4) This utility model systematically sets high-strength sound-insulating pads at key contact interfaces such as truss beam components and floor slabs, supports and main steel beams, and bolt connections, cutting off the transmission path of solid sound. At the same time, the thickness of the pads is designed differently according to the different stress characteristics of each part, thereby effectively blocking impact sound while ensuring the structural connection strength and rigidity, and significantly improving the quality of the indoor sound environment of steel structure buildings. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model (including the ceiling module); Figure 2 yes Figure 1 Sectional view of AA (excluding ceiling module); Figure 3 This is a structural schematic diagram of a truss beam component; Figure 4 yes Figure 3 Cross-sectional view of the middle section (BB); Figure 5 yes Figure 1 A schematic diagram of the structure of the central support (including the sound insulation pad).

[0019] The reference numerals in the figures include: 1. Main steel beam; 2. Floor slab; 3. Support; 31. Lower plate; 32. Vertical plate; 33. Upper plate; 34. Stiffening plate; 4. Truss beam components; 41. Upper chord; 411. End connecting plate; 42. Diagonal web member; 43. Lower chord; 5. Sound insulation pad. Detailed Implementation

[0020] The technical solution and effects of this utility model will be described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0021] like Figure 1 and Figure 2As shown in the embodiment of this utility model, a movable truss beam connection node based on a wall arrangement includes two main steel beams 1 arranged parallel in the front-to-back direction, and a truss beam component 4 arranged in the left-to-right direction connecting the two main steel beams 1. The truss beam component 4 is detachably connected to the main steel beams 1 through independent supports 3.

[0022] The main steel beam 1 is a hot-rolled or welded steel beam with a king-shaped cross-section and a yield strength greater than or equal to 355 MPa. The cross-section of the main steel beam 1, from top to bottom, includes an upper flange, a middle flange, and a lower flange. To provide local reinforcement and create adjustable installation conditions for the movable support 3, multiple sets of vertical stiffening ribs are symmetrically welded on both sides in the web area between the upper and middle flanges and between the middle and lower flanges, with the stiffening ribs in the upper and lower spaces corresponding one-to-one. The thickness of the stiffening ribs is greater than or equal to the web thickness of the main steel beam 1, and their vertical edges are connected to adjacent flanges using penetration welding or equal-strength fillet welding. The stiffening ribs located between the middle and lower flanges form multiple standardized connection positions on the web of the main steel beam 1. Each connection position is a rectangular area enclosed by two adjacent stiffening ribs, the middle flange, and the lower flange. Each connection position has multiple pre-drilled bolt holes, and the horizontal width of the connection position allows the support 3 to be inserted and positioned, so as to ensure that the support 3 can be accurately positioned and effectively transfer the load.

[0023] like Figure 3 and Figure 4 As shown, the truss beam component 4 is a lightweight planar truss structure, mainly comprising an upper chord 41 and a lower chord 43. The upper chord 41 and lower chord 43 are arranged parallel vertically, with the length of the upper chord 41 greater than that of the lower chord 43, to create a connection space at the end with the support 3. Sealing plates are welded to the ends of both the upper chord 41 and lower chord 43 to seal the pipe ends. Furthermore, horizontally arranged end connecting plates 411 are welded to both ends of the bottom surface of the upper chord 41. The sealing plates and end connecting plates 411 work together to strengthen the local stiffness and connection strength at the ends of the truss beam component 4. The upper chord 41 and lower chord 43 are fixedly connected by several diagonal web members 42 connected end-to-end, forming a stable triangular truss unit.

[0024] All members of the truss beam component 4, namely the upper chord 41, lower chord 43, and diagonal web members 42, are made of rectangular hollow steel tubing, preferably Q355B or equivalent strength steel. The upper chord 41 has a larger cross-sectional dimension than the lower chord 43 and diagonal web members 42 to directly bear the line load transmitted from the upper wall. The area ratio of the upper chord 41 cross-section to that of the lower chord 43 or diagonal web member 42 is between 1.5 and 2.5, optimizing steel usage while ensuring load-bearing capacity and achieving structural lightweighting.

[0025] like Figure 5As shown, the support 3 includes an upper plate 33, a vertical plate 32, and a lower plate 31. The upper plate 33 and the lower plate 31 are arranged parallel to each other vertically and are welded together by the vertically arranged vertical plate 32 to form a stable inverted wedge-shaped component. To further enhance the torsional and bending stiffness of the support 3, a stiffening plate 34 is welded between the lower plate 31 and the upper plate 33. One side of the stiffening plate 34 is welded and fixed perpendicularly to the vertical plate 32. The support 3 is bolted to the web of the lower space of the main steel beam 1 through its vertical plate 32, bolted to the lower flange of the main steel beam 1 through its lower plate 31, and bolted to the end connecting plate 411 of the truss beam component 4 through its upper plate 33, thus forming a complete force transmission path. To achieve the above-mentioned detachable connection, bolt holes are provided on the upper plate 33, and the hole positions and diameters correspond one-to-one with the end connecting plates 411 of the truss beam component 4; bolt holes are also provided on the vertical plate 32, and the hole positions and diameters correspond one-to-one with the prefabricated bolt holes in the connecting positions on the web of the main steel beam 1.

[0026] To block solid-borne sound transmission and improve the acoustic environment quality of the building, this embodiment includes sound-insulating pads 5 at key contact surfaces. Specifically, sound-insulating pads 5 are provided at the contact surfaces between the top of the upper chord 41 of the truss beam component 4 and the floor slab 2 and the middle flange of the main steel beam 1. Simultaneously, sound-insulating pads 5 are also fixed to the contact surfaces between the vertical plate 32 of the support 3 and the main steel beam 1, the contact surfaces between the lower plate 31 of the support 3 and the main steel beam 1, and between the main steel beam 1 and the bolts using high-strength structural adhesive.

[0027] Specifically, the sound insulation pad 5 is made of high-strength, high-damping rigid polyurethane elastomer material. Considering the combined requirements of pressure bearing and sound insulation performance, the pad thickness is designed to be 10 mm for pads fixed on horizontal load-bearing surfaces, such as the top of the upper chord 41 of the truss beam component 4 and the lower plate 31 of the support 3; and the pad thickness is designed to be 6 mm for pads fixed on vertical non-primary load-bearing surfaces, such as the side of the vertical plate 32 of the support 3.

[0028] The processing, fabrication, and assembly method of the connection node of truss beam component 4 in this embodiment: 1. Workshop processing and manufacturing First, densely packed stiffening ribs are pre-installed on the main steel beam 1 within the range where the wall may be arranged. Bolt connection holes are reserved in the connection positions formed between adjacent stiffening ribs.

[0029] The processing flow for truss beam component 4 is as follows: The upper chord 41 and lower chord 43 of the truss beam component 4 are cut and prepared at the laser cutting robot workstation. All diagonal web members 42 are cut at the rectangular tube intersection workstation, and the upper and lower chords 43 are welded to the diagonal web members 42 to form a stable hollow truss structure. End caps are welded to both ends of the lower chord 43 and both ends of the upper chord 41, and an end connecting plate 411 connecting to the upper plate 33 of the support 3 is welded to the upper chord 41. High-strength rigid polyurethane pads are bonded to the upper surface of the upper chord 41, i.e., the contact surface with the floor slab 2, using structural adhesive, thus completing the fabrication of the truss beam component 4.

[0030] The machining process for support 3 is as follows: The upper plate 33, vertical plate 32, lower plate 31 and stiffening plate 34 are cut and welded respectively in the laser cutting robot workstation and the welding robot workstation; In the three-dimensional drilling workstation, bolt holes corresponding to the end connecting plate 411 are drilled on the upper plate 33, bolt holes corresponding to the reserved screw holes in the web of the main steel beam 1 are drilled on the vertical plate 32, and bolt connection holes corresponding to the reserved screw holes in the connecting plate of the truss beam component 4 and the web of the main steel beam 1 are drilled on the upper plate 33 and the vertical plate 32 respectively. High-strength rigid polyurethane pads are bonded to the outside of the vertical plate 32, i.e., the contact surface with the web of the main steel beam 1, and the lower surface of the lower plate 31, i.e., the contact surface with the lower flange of the main steel beam 1, using structural adhesive to complete the fabrication of the support 3.

[0031] 2. On-site installation and relocation adjustment The truss beam component 4 is lightweight, and on-site disassembly, movement, and installation can be carried out using specialized small disassembly and reassembly tools with lifting, telescopic, and rotation functions.

[0032] The initial installation steps are as follows: Place the truss beam component 4 parallel to the length of the main steel beam 1, and adjust its planar position so that the midpoint of the upper chord 41 of the truss beam component 4 is aligned vertically with the center of the hole group at the target connection position on the web of the main steel beam 1.

[0033] Within the space between the floor slab 2 and the lower flange of the main steel beam 1, rotate the upper chord 41 90 degrees along its vertical centerline so that its length is perpendicular to the main steel beam 1. Using installation and dismantling equipment, slowly lift the truss beam component 4 until the sound insulation pad 5 at the top of its upper chord 41 is tightly fitted against the bottom surface of the floor slab 2. Insert the support 3 from the side and below, ensuring its vertical plate 32 is flush against the web of the main steel beam 1, and its upper plate 33 is flush against the lower surface of the end connecting plate 411 at the bottom of the upper chord 41. After alignment, tighten the bolts connecting the vertical plate 32 of the support 3 to the web of the main steel beam 1, and the bolts connecting the upper plate 33 of the support 3 to the end connecting plate 411 in sequence. Finally, install the prefabricated ceiling to complete the interior finishing work.

[0034] The steps for moving truss beam component 4 during wall displacement are as follows: Dismantle and properly store the upper wall and prefabricated ceiling. Use specialized installation and dismantling tools to hold the truss beam component 4 in place. Remove the connecting bolts between the support 3 and the web of the main steel beam 1 and the connecting plate of the truss beam component 4; remove the support 3, lower the truss beam component 4 by approximately 100 mm, and move the truss beam component 4 parallel to the new installation position. Repeat the lifting, alignment, support 3 installation, ceiling and wall installation procedures from the initial installation steps to complete the relocation and repositioning of the truss beam component 4.

[0035] It should be noted that, as will be apparent to those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. The scope of this utility model is defined by the claims rather than the foregoing description.

Claims

1. A movable truss beam connection node based on wall arrangement, comprising two main steel beams (1) arranged parallel in the front-to-back direction, and a truss beam component (4) arranged in the left-to-right direction connecting the two main steel beams (1); characterized in that: The truss beam component (4) is detachably connected to the main steel beam (1) through an independent support (3); the main steel beam (1) is provided with several connection positions for connecting with the truss beam component (4), and the connection positions are prefabricated with multiple bolt connection holes, and the horizontal width of the connection position allows the support (3) to be inserted and positioned; the truss beam component (4) includes an upper chord (41) and a lower chord (43), and the upper chord (41) and the lower chord (43) are arranged parallel to each other vertically.

2. The movable truss beam connection node based on wall arrangement as described in claim 1, characterized in that: The main steel beam (1) is a hot-rolled or welded steel beam with a king-shaped cross section. The cross section of the main steel beam (1) includes an upper flange, a middle flange and a lower flange from top to bottom. In the web area between the upper flange and the middle flange and between the middle flange and the lower flange, multiple sets of vertical stiffening ribs are symmetrically welded on both sides, and the stiffening ribs in the upper and lower spaces correspond one-to-one. The connection position is located between the middle flange and the lower flange and is defined by two adjacent stiffening ribs.

3. The movable truss beam connection node based on wall arrangement as described in claim 1, characterized in that: The ends of the upper chord (41) and the lower chord (43) are welded with sealing plates. At both ends of the bottom surface of the upper chord (41), horizontally arranged end connecting plates (411) are welded. The sealing plates and the end connecting plates (411) work together to strengthen the local stiffness and connection strength of the ends of the truss beam component (4). The upper chord (41) and the lower chord (43) are fixedly connected by several diagonal web members (42) connected end to end, forming a stable triangular truss unit.

4. The movable truss beam connection node based on wall arrangement as described in claim 3, characterized in that: The top chord (41), bottom chord (43) and diagonal web member (42) are all made of rectangular hollow steel pipes. The cross-sectional dimensions of the top chord (41) are larger than those of the bottom chord (43) and diagonal web member (42). The area ratio of the cross-section of the top chord (41) to that of the bottom chord (43) or diagonal web member (42) is between 1.5 and 2.

5.

5. The movable truss beam connection node based on wall arrangement as described in claim 3 or 4, characterized in that: The length of the upper chord (41) is greater than the length of the lower chord (43).

6. The movable truss beam connection node based on wall arrangement as described in claim 1, characterized in that: The support (3) includes an upper plate (33), a vertical plate (32) and a lower plate (31). The upper plate (33) and the lower plate (31) are arranged parallel to each other and are fixed by welding through the vertically arranged vertical plate (32) to form a stable inverted wedge-shaped component. A stiffening plate (34) is also welded between the lower plate (31) and the upper plate (33). One side of the stiffening plate (34) is welded and fixed perpendicularly to the vertical plate (32).

7. The movable truss beam connection node based on wall arrangement as described in claim 6, characterized in that: The upper plate (33) has bolt holes, the position and diameter of which correspond one-to-one with the bolt connection holes on the end connecting plate (411) of the truss beam component (4); the vertical plate (32) also has bolt holes, the position and diameter of which correspond one-to-one with the prefabricated bolt holes in the connecting position on the web of the main steel beam (1).

8. The movable truss beam connection node based on wall arrangement as described in claim 1, characterized in that: Sound insulation pads (5) are fixed on the contact surfaces of the top of the upper chord (41) of the truss beam component (4) with the floor slab (2) and the middle flange of the main steel beam (1), the contact surfaces of the vertical plate (32) of the support (3) with the main steel beam (1), the contact surfaces of the lower plate (31) of the support (3) with the main steel beam (1), and between the main steel beam (1) and the bolts.

9. The movable truss beam connection node based on wall arrangement as described in claim 8, characterized in that: The sound insulation pad (5) is made of rigid polyurethane elastomer; the pad thickness fixed on the horizontal bearing surface is designed to be 10 mm; the pad thickness fixed on the vertical non-main bearing surface is designed to be 6 mm.

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