A glued laminated timber arched beam splicing structure

Abstract

This utility model relates to the field of glued laminated timber (GLLT) technology and provides a GLLT curved beam splicing structure, including a first curved beam and a second curved beam. A fitting groove is provided on one side of the first curved beam, and several overflow holes are provided at the lower end of the first curved beam corresponding to the fitting groove. A boss is fixedly installed on one side of the second curved beam. The first and second curved beams are fitted together. The beneficial effects of this utility model are: through the stepped fitting structure of the fitting groove and the boss, mechanical interlocking is achieved, dispersing shear force to multiple interfaces. Compared with traditional through bolt connections, this significantly improves the shear bearing capacity and connection firmness of the splicing node. The combined constraint structure of the clamping plate and the sleeve plate forms a ring clamping force through bolt pre-tightening, effectively suppressing the shaking and displacement of the beam after splicing, making the load transfer more uniform, and significantly improving structural stability. This achieves reliable load transfer for GLLT curved beam splicing, meeting the structural stability requirements of large-span buildings.

Description

Technical Field

[0001] This utility model relates to the field of glued laminated timber technology, specifically to a glued laminated timber arc-shaped beam splicing structure. Background Technology

[0002] In glued laminated timber (GLTL) building structures, when the span of a GLTL curved beam is large, multiple beam segments need to be spliced ​​to meet engineering requirements. Current technology typically involves creating through holes at the joint of two GLTL curved beams, attaching steel plates tightly to both sides of the beam, and using through bolts for connection and fixation. This method achieves beam splicing through mechanical connection and is currently a relatively common GLTL curved beam splicing technique.

[0003] However, in practical applications, the above splicing method has the problem of insufficient stability of the splicing nodes. The connection structure between the through bolts and the steel plate is prone to loosening under load, which restricts the connection strength of the arc beams at both ends, and thus affects the overall stability of the splicing structure and the reliability of load transfer. Utility Model Content

[0004] The purpose of this invention is to provide a glued laminated timber arc beam splicing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a glued laminated timber arc-shaped beam splicing structure, comprising a first arc-shaped beam and a second arc-shaped beam;

[0006] The first arc-shaped beam has a fitting groove on one side, and the first arc-shaped beam has several overflow holes at the lower end corresponding to the fitting groove. The second arc-shaped beam has a boss fixedly installed on one side. The first arc-shaped beam and the second arc-shaped beam fit together, and the boss fits into the fitting groove. The first arc-shaped beam and the second arc-shaped beam are bolted to each other with clamping plates. The first arc-shaped beam and the second arc-shaped beam are bolted to each other with a sleeve plate at the fitting junction. The lower ends of the first arc-shaped beam and the second arc-shaped beam are bolted to each other with mounting bases.

[0007] Preferably, the first and second arc-shaped beams are stepped arc-shaped and, when fitted together, form an arc-shaped beam structure.

[0008] Preferably, the overflow holes are located on the lower end face of the fitting groove, are evenly distributed along the length of the arc-shaped beam, and the hole depth penetrates the side wall of the fitting groove of the first arc-shaped beam.

[0009] Preferably, the clamping plate is an arc-shaped metal plate, the length of which is consistent with the splicing section length of the first arc-shaped beam and the second arc-shaped beam, the width of which covers half of the side area of ​​the beam, and the clamping plate has through holes at both ends that are compatible with bolts.

[0010] Preferably, the sleeve is an arc-shaped metal plate, and the arc is consistent with the outer arc surface of the first arc-shaped beam.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: through the stepped interlocking structure of the interlocking groove and the boss, mechanical interlocking is achieved, and the shear force is distributed to multiple interfaces. Compared with the traditional through bolt connection, the shear bearing capacity and connection firmness of the splicing node are significantly improved. The combined constraint structure of the clamping plate and the sleeve plate forms a ring clamping force through bolt pre-tightening, which effectively suppresses the shaking and displacement of the beam after splicing, making the load transfer more uniform and significantly improving the structural stability. It realizes reliable load transfer of glued laminated timber arc beam splicing and meets the structural stability requirements of large-span buildings. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model;

[0013] Figure 2 This is a structural disassembly diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the first arc-shaped beam structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the second arc-shaped beam structure of this utility model.

[0016] In the diagram: 1. First arc beam; 2. Second arc beam; 3. Fitting groove; 4. Glue overflow hole; 5. Boss; 6. Clamping plate; 7. Sleeve plate; 8. Mounting base. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 The present invention provides the following technical solution: a glued laminated timber arc beam splicing structure, including a first arc beam 1 and a second arc beam 2; a fitting groove 3 is provided on one side of the first arc beam 1, and several overflow holes 4 are provided at the lower end of the first arc beam 1 corresponding to the fitting groove 3; a boss 5 is fixedly installed on one side of the second arc beam 2; the first arc beam 1 and the second arc beam 2 are fitted together, and the boss 5 is fitted into the fitting groove 3; clamping plates 6 are bolted to both sides of the first arc beam 1 and the second arc beam 2; a sleeve plate 7 is bolted to the fitting junction of the first arc beam 1 and the second arc beam 2; and a mounting base 8 is bolted to the lower end of the first arc beam 1 and the second arc beam 2.

[0019] The first arc-shaped beam 1 and the second arc-shaped beam 2 are stepped arc-shaped and form an arc-shaped beam structure after being fitted together. The overflow hole 4 is set on the lower end face of the fitting groove 3 and is evenly distributed along the length of the arc-shaped beam. The hole depth penetrates the side wall of the fitting groove 3 of the first arc-shaped beam 1. The clamping plate 6 is an arc-shaped metal plate. Its length is consistent with the splicing section length of the first arc-shaped beam 1 and the second arc-shaped beam 2. Its width covers half of the side area of ​​the beam body. The clamping plate 6 has through holes at both ends that are compatible with bolts. The sleeve plate 7 is an arc-shaped metal plate with an arc that is consistent with the outer arc surface of the first arc-shaped beam 1.

[0020] When using the interlocking installation, apply epoxy resin structural adhesive to the interlocking groove 3, align the boss 5 of the second arc beam 2 with the interlocking groove 3 of the first arc beam 1, and push it in along the tangent direction of the arc. Since the first arc beam 1 and the second arc beam 2 are in the shape of stepped arcs, the height difference between adjacent stepped surfaces forms a guide, ensuring that the boss 5 is accurately embedded along the trajectory. After embedding, excess adhesive overflows from the overflow hole 4, forming a uniform adhesive layer. At the same time, the overflow hole 4 discharges the excess adhesive.

[0021] After fitting, clamping plates 6 are installed on both sides. Torque is applied by bolts to press the clamping plates 6 against the sides of the beam, thus tightening it and constraining radial displacement. When the curved beam is subjected to vertical loads, the main shear force is transmitted through the stepped interface between the boss 5 and the fitting groove 3, reducing the shear load along the grain of the wood glue. The ring constraint of the sleeve plate 7 increases the moment of inertia of the section at the joint. When subjected to bending moments, the sleeve plate 7 deforms together with the beam, suppressing displacement at the joint. The stepped arc shape design allows for a gradual transition of the section, reducing stress concentration. The mounting base 8 is fixed to the supporting structure by bolts, providing vertical reaction force while restricting out-of-plane displacement.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A glued laminated timber arc beam splicing structure, comprising a first arc beam (1) and a second arc beam (2); characterized in that The first arc beam (1) has a fitting groove (3) on one side, and the first arc beam (1) has several overflow holes (4) at the lower end of the fitting groove (3). The second arc beam (2) has a boss (5) fixedly installed on one side. The first arc beam (1) and the second arc beam (2) are in contact, and the boss (5) is fitted with the fitting groove (3). The first arc beam (1) and the second arc beam (2) are bolted together with clamps (6). The first arc beam (1) and the second arc beam (2) are bolted together with sleeves (7). The lower end of the first arc beam (1) and the second arc beam (2) is bolted together with a mounting base (8).

2. The glued laminated timber arc-shaped beam splicing structure according to claim 1, characterized in that: The first arc-shaped beam (1) and the second arc-shaped beam (2) are in the shape of stepped arcs, and together they form an arc-shaped beam structure.

3. The glued laminated timber arc-shaped beam splicing structure according to claim 1, characterized in that: The overflow hole (4) is located on the lower end face of the fitting groove (3) and is evenly distributed along the length of the arc beam. The hole depth penetrates the side wall of the fitting groove (3) of the first arc beam (1).

4. The glued laminated timber arc-shaped beam splicing structure according to claim 1, characterized in that: The clamping plate (6) is an arc-shaped metal plate with a length consistent with the splicing length of the first arc-shaped beam (1) and the second arc-shaped beam (2). Its width covers half of the side of the beam body, and the clamping plate (6) has through holes at both ends that are compatible with bolts.

5. The glued laminated timber arc-shaped beam splicing structure according to claim 1, characterized in that: The sleeve plate (7) is an arc-shaped metal plate, and its curvature is consistent with the outer arc surface of the first arc-shaped beam (1).

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