An integrated assembly and connection device for glulam structure beam-column-wall panel

Abstract

The present invention discloses an integrated assembly connection device for a glulam structure beam-column-wallboard, comprising an end plate connected between a frame beam and a column, a transverse steel plate and a pair of longitudinal steel plates vertically arranged on the end plate, the pair of longitudinal steel plates and the transverse steel plate being arranged perpendicularly to each other, a stiffening rib plate and a fixed ear plate being arranged between the outer side of the pair of longitudinal steel plates and the end plate, and a rotatable ear plate being hinged on the stiffening rib plate. The wooden wallboard is effectively integrated and assembled with the wooden frame beam and column, so that the structure formed by the glulam frame-wallboard has better integrity and seismic resistance, and has a significant effect in limiting the splitting damage of the beam end. In addition, it is convenient to quickly replace and install the wallboard when it is damaged or destroyed.

Description

Technical Field

[0001] The invention relates to the field of industrial and civil construction, and in particular to an integrated assembly connection device for a glued wood structure beam-column-wallboard. Background Art

[0002] Prefabricated glulam structures are one of the important directions for the development of building structures in my country. As a renewable natural resource, wood can be recycled. Compared with traditional reinforced concrete structures, prefabricated glulam structures are conducive to the development of my country's building industrialization. They save energy and have high production efficiency. They are one of the important ways to develop green and environmentally friendly buildings. Connection nodes are one of the key technologies of prefabricated glulam structures. Reliable, effective and convenient connection nodes are the key to ensuring the integrity and seismic performance of the structure. The node connection in the prefabricated glulam structure is mainly carried out by combining steel components and bolts.

[0003] At present, the node connection method of glued laminated timber structure is to connect the frame wooden beams and wooden columns with steel components through bolts or directly connect them using self-tapping screws. There is no direct connection between the wall panels and the wooden frame as a whole at the frame node connection, so that the wall panels are simply used as filling components and cannot be effectively connected to the overall frame to form a whole to provide more lateral stiffness for the structure.

[0004] In engineering, the construction process of glued laminated timber frames and wall panels is usually carried out separately, that is, the frame beams and columns are assembled first, and then the wall panels are assembled. The assembly process is cumbersome, time-consuming and labor costs are increased. Even due to errors in the early processing of components, the connection holes are misaligned, and the wall panels need to be returned to the factory for reprocessing, etc., which makes the degree of assembly integration of the wood structure too low.

[0005] Most traditional connectors of glued laminated wood structures are only composed of transverse steel plates or transverse steel plates and end plates. In experimental research and engineering applications, the main damage of wooden frames is splitting damage along the grain of beam ends, and the main damage of steel connectors is tearing damage of transverse steel plates and narrow welds of end plates. A few traditional connectors are equipped with longitudinal steel plates. Through research, it is found that longitudinal steel plates can effectively prevent the splitting damage along the grain of wood at beam ends and the tearing damage of transverse steel plates and narrow welds of end plates. However, since only longitudinal steel plates are set in connectors, the longitudinal steel plates are also prone to bending, so the effect of limiting the splitting damage along the grain of wood at beam ends is not significant.

[0006] In order to solve the above problems, it is necessary to provide an assembly connection component based on node connection to realize the integrated assembly connection of wooden frame beams and wall panels and the overall hoisting construction; at the same time, the overall performance of the wooden structure is strengthened, so that the glued timber frame-wall panel structure can achieve better seismic performance and effectively limit the splitting damage at the beam end. Summary of the invention

[0007] In order to solve the above defects existing in the prior art, the purpose of the present invention is to provide a glulam structure beam-column-wall panel integrated assembly connection device, which effectively integrates the wood wall panel with the wood frame beam column, so that the structure formed by the glulam frame-wall panel has better integrity and seismic performance, and has a significant effect in limiting the splitting damage of the beam end. In addition, it is convenient to quickly replace and install the wall panel when it is damaged or destroyed.

[0008] The present invention is achieved through the following technical solutions.

[0009] A glued wood structure beam-column-wall panel integrated assembly connection device includes an end plate connected between a frame beam and a column, a transverse steel plate and a pair of longitudinal steel plates vertically arranged on the end plate, the pair of longitudinal steel plates and the transverse steel plate are vertically arranged to each other, stiffening ribs and fixed ear plates are arranged between the outer sides of the pair of longitudinal steel plates and the end plate, and a rotatable ear plate is hinged on the stiffening rib.

[0010] For the above technical solution, the present invention has a further preferred solution:

[0011] Preferably, the stiffening rib plate is hingedly connected to the rotatable ear plate via a hinge.

[0012] Preferably, the stiffening rib plate is a right-angled triangle structure, and the hinge is arranged on the hypotenuse of the triangle.

[0013] Preferably, the rotatable ear plate is rectangular or triangular.

[0014] Preferably, the width of the end plate is the same as the width of the frame column; the height of the transverse steel plate is the same as the height of the frame beam.

[0015] Preferably, bolt holes are respectively provided on the end plate, the transverse steel plate, the fixed ear plate and the rotatable ear plate; and the bolt holes on the end plate are staggered with respect to the connection ends of the stiffening rib plates.

[0016] Preferably, the longitudinal steel plates, the transverse steel plates, the end plates, the fixed ear plates, the stiffening rib plates, the hinges and the rotatable ear plates are connected by full penetration welding.

[0017] The present invention provides a method for integrating the glulam structure beam-column-wallboard of the device, comprising:

[0018] Connect the connector to the frame beam column, use the fixed ear plate as a positioning device, open the rotatable ear plate on the hinge side to 90° toward the outside of the steel plate, place the wall panel in, close the hinge, and connect the fixed ear plate to the wall panel through the reserved bolt holes; the end plate is connected to the frame column through the reserved bolt holes; the transverse steel plate is connected to the pre-opened notch of the frame beam through the reserved bolt holes.

[0019] The present invention adopts the above technical solution, which has the following beneficial effects:

[0020] The present invention adds a stiffening rib plate and a longitudinal steel plate on the basis of a traditional steel plate connector. The stiffening rib plate on one side is extended to form a fixed ear plate, and the stiffening rib plate on the other side is connected to the ear plate through a hinge, so that the ear plate can rotate around the stiffening rib plate through the hinge. The glulam structure beam-column-wall panel integrated assembly device of the present invention can be applied to a wood wall panel and a wood frame beam-column system.

[0021] Its advantages are:

[0022] 1) The present invention provides stiffening ribs at the corners of the longitudinal steel plates and the end plates, thereby enhancing the bending rigidity of the nodes; making the structural nodes have better connection performance, reducing the rotation of the end plates, and effectively limiting the longitudinal splitting damage of the wood at the beam ends.

[0023] 2) The fixed ear plate on the side without hinges is integrated with the stiffening rib and can be used as a positioning device during the wall panel assembly process, thereby improving the refinement of the wall panel assembly.

[0024] 3) The rotatable ear plate on the hinged side and the stiffening rib are connected by hinges. The ear plate can realize the integrated connection between the wall panel and the wooden frame beam column, and at the same time it is conducive to improving the assembly integration of modern wooden structures. When the wall panel is damaged or destroyed, it is convenient to replace and install a new wall panel, which enhances the overall and seismic performance of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A structural schematic diagram of the present invention is shown;

[0027] Figure 2 A schematic diagram of the hinge structure connection is presented;

[0028] Figure 3 A schematic diagram of the node connection assembly structure of the present invention applied to a glued-laminated timber frame-CLT wall panel is presented;

[0029] Figure 4 A schematic diagram of structural loading when the present invention is applied to a glued wood frame-CLT wall panel is presented;

[0030] Figure 5 A schematic diagram of the hysteresis and skeleton curves of the present invention applied to a glued-laminated timber frame-CLT wall panel structure is presented.

[0031] In the figure: 1. longitudinal steel plate; 2. transverse steel plate; 3. end plate; 4. fixed ear plate; 5. stiffening rib plate; 6. hinge; 7. rotatable ear plate; 8. nut; 9. bolt; 101. frame column; 102. frame beam; 103. wall panel; 201. reaction wall; 202. actuator; 203. reaction beam; 204. reaction column; 205. glued laminated wood frame beam-CLT wall panel. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0033] like Figure 1 As shown, the present invention provides an assembled glued wood structure beam-column-wall panel connection device, which is arranged at the node connection of glued wood structure beam-column and wall panel. It includes a longitudinal steel plate 1, a transverse steel plate 2, an end plate 3, a fixed ear plate 4, a stiffening rib plate 5, a hinge 6 and a rotatable ear plate 7. The end plate 3 serves as a base bottom plate; the transverse steel plate 2 is perpendicular to the end plate 3 and connected to the end plate 3 by welding; the longitudinal steel plate 1 is vertically arranged on the end plate 3 and arranged on both sides of the transverse steel plate 2, and is perpendicular to the transverse steel plate 2. The longitudinal steel plate 1 is connected to the transverse steel plate 2 by welding, and the longitudinal steel plate 1 is connected to the end plate 3 by welding. A stiffening rib plate 5 is arranged outside a pair of longitudinal steel plates 1 and between the longitudinal steel plates 1 and the end plates 3. The stiffening rib plate 5 is a right-angled triangle structure, and a hinge 6 is arranged on the hypotenuse of the triangle. The hinge 6 is hinged to a rectangular or triangular rotatable ear plate 7; the hinge 6 is connected to the stiffening rib plate 5 and the rotatable ear plate 7 by welding. The stiffening rib plate 5 is connected to the rotatable ear plate 7 by a nut 8 and a screw 9. Figure 2 shown.

[0034] like Figure 1 As shown, a fixing ear plate 4 arranged parallel to the stiffening rib plate 5 is provided between the longitudinal steel plate 1 and the end plate 3 on the same side of the stiffening rib plate 5, and the fixing ear plate 4 is connected to the longitudinal steel plate 1 and the end plate 3 by welding.

[0035] The end plate 3, the transverse steel plate 2, the fixed ear plate 4 and the rotatable ear plate 7 are respectively provided with bolt holes; the bolt holes on the end plate are staggered with the connection ends of the stiffening rib plates. The steel used is Q235B, and the bolts are 8.8 grade high-strength bolts.

[0036] The width of the end plate is the same as the width of the frame column, and the height is determined according to the number of bolts set according to the structural spacing; the height of the transverse steel plate is the same as the beam height, and the length is determined according to the number of bolts set according to the structural spacing; the width of the longitudinal steel plate is the same as the width of the frame beam, and the length is determined according to the specific design and calculation; the width and length of the ear plate are determined according to the required number and diameter of bolts according to the structural spacing; the diameter and strength of the hinge shaft should be calculated and determined to ensure that the shaft will not suffer shear failure.

[0037] In one embodiment, the end plates 3 have two rows of bolt holes at both ends, each row has two bolt holes, and the middle has two rows of bolt holes, each row has two bolt holes. The transverse steel plate 2 has two rows of bolt holes, each row has three bolt holes. The fixed ear plate 4 and the rotatable ear plate 7 have two rows of bolt holes, each row has two bolt holes.

[0038] When installing the connection device, the end plate 3 is bolted to the frame column through the reserved bolt holes; the transverse steel plate 2 is bolted to the pre-opened notch of the frame beam through the reserved bolt holes; the fixed ear plate 4 is bolted to the wall panel through the reserved bolt holes. During installation, first connect the device to the frame beam column. The fixed ear plate 4 on the side without a hinge can be used as a positioning device; the rotatable ear plate 7 on the side with the hinge 6 is first opened to 90° toward the outside of the steel plate. When installing the wall, a small amount of cutting is required at the four corners of the wall panel. After the wall panel is placed in, the hinge is pushed to the closed state, and the wall panel is connected with bolts. The device is applied to the multi-layer glued wood frame-CLT wall panel structure. The specific usage details are as follows Figure 3 shown.

[0039] The present invention can significantly improve the lateral load-bearing capacity and lateral stiffness of the glued wood beam-column-wall panel structure, has an obvious effect in limiting the lateral deformation of the wood frame-wall panel structure system, and enables the glued wood frame and the wall panel to work in coordination.

[0040] In order to verify the significant effect of the present invention on improving the mechanical properties of glued wood frame-wall panel structure, Figure 3 A single-layer single-span structure model was used for low-cycle reciprocating load tests. The loading device and specimen arrangement are as follows: Figure 4 shown.

[0041] The connecting device is arranged on the inner corner between the frame column 101 and the frame beam 102 to fix the wall panel 103 to the frame column 101 and the frame beam 102 .

[0042] In the test, the structural dimensions of the glulam frame-CLT wall panel 205 are as follows: column 210×210mm; top beam 150×210mm; bottom beam 210×210mm; CLT wall panel thickness 60mm. The glulam frame-CLT wall panel 205 connected by the connecting device is placed on the frame of the reaction column 204 and the reaction beam 203 to realize the integrated assembly connection of the beam, column and wall panel; the load is applied to the glulam frame-CLT wall panel 205 through the actuator 202 connected to the reaction wall 201, so that when the structure is subjected to lateral load, the wall panel and the frame node undergo coordinated force deformation, and the lateral load is transmitted to the wall panel through the node connector at the corner of the frame. In addition, the stiffening ribs and longitudinal steel plates in the connector significantly improve the bearing capacity and lateral stiffness of the node. The overall bearing capacity of the specimen increases with the increase of loading displacement, and the bearing capacity decreases with the destruction of the wall panel. Figure 5 As shown, the connection device of the present invention plays an important role in transferring loads during the change of the structural bearing capacity. When the wall panels are damaged or destroyed under the lateral load, the connection member of the present invention can facilitate the timely replacement of the wall panels to ensure the normal use of the structure.

[0043] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. An integrated assembly and connection device for a glulam structure beam-column-wall panel, characterized in that: It includes an end plate connected between the frame beam and the column, a transverse steel plate and a pair of longitudinal steel plates are vertically arranged on the end plate, the pair of longitudinal steel plates and the transverse steel plate are vertically arranged to each other, a stiffening rib plate and a fixed ear plate are arranged between the outer sides of the pair of longitudinal steel plates and the end plate, and a rotatable ear plate is hinged on the stiffening rib plate; The stiffening rib plate is hingedly connected to the rotatable ear plate through a hinge; The fixed ear plate on the side without hinge is integrated with the stiffening rib plate; The stiffening rib plate is a right-angled triangle structure, and the hinge is arranged on the hypotenuse of the triangle.

2. The integrated assembly and connection device of a glued laminated wood structure beam-column-wall panel according to claim 1, characterized in that: The rotatable ear plate is rectangular or triangular.

3. The integrated assembly and connection device of a glued wood structure beam-column-wall panel according to claim 1, characterized in that: The width of the end plate is the same as the width of the frame column; the height of the transverse steel plate is the same as the height of the frame beam.

4. The integrated assembly and connection device of a glued-laminated timber structure beam-column-wall panel according to claim 1, characterized in that: The end plate, the transverse steel plate, the fixed ear plate and the rotatable ear plate are respectively provided with bolt holes; the bolt holes on the end plate are staggered with the connection ends of the stiffening rib plates.

5. The integrated assembly and connection device of a glued laminated wood structure beam-column-wall panel according to claim 1, characterized in that: The longitudinal steel plates, transverse steel plates, end plates, fixed ear plates, stiffening rib plates, hinges and rotatable ear plates are connected by full penetration welding.

6. A method for integrated assembly and connection of a glued-laminated timber structure beam-column-wallboard of the device according to any one of claims 1 to 5, characterized in that: include: Connect the connector to the frame beam column, use the fixed ear plate as a positioning device, open the rotatable ear plate on the hinge side to the outside of the steel plate to 90°, place the wall panel in, close the hinge, and connect the fixed ear plate to the wall panel through the reserved bolt holes; The end plate is connected to the frame column bolts through the reserved bolt holes; the transverse steel plate is connected to the pre-opened notch bolts of the frame beam through the reserved bolt holes.

7. An integrated assembly and connection device of a glued-laminated timber structure beam-column-wall panel as claimed in any one of claims 1 to 5, applied in a wooden wall panel and wooden frame beam-column system.

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