Large-span double-layer glued laminated wood arch and steel column connecting joint
Patent Information
- Application Number
- CN202522620431.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-10
AI Technical Summary
在大跨度、高荷载的双层胶合木拱与钢柱连接中，这些传统节点普遍存在节点区域应力集中显著及木材切削精度要求高等施工难题，如刚性连接导致传力路径不明确，易在胶合木端部和钢构件连接处产生应力集中，降低节点疲劳性能并引发木材局部压溃或开裂
[0017]1）通过在双层胶合木拱的间隙中插入加强木梁，使双层胶合木拱与钢柱形成的连接更加可靠，进而使得胶合木拱的内力能够有效传递至钢柱，节点受力清晰，且整个连接节点构造简洁优美，现场焊接量少，有利于实现大跨度木拱拱脚在现场的快速施工；
Smart Images
Figure CN224902408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of architectural structural design technology, and in particular to a connection node between a large-span double-layer glued laminated timber arch and a steel column. Background Technology
[0002] In recent years, with the development of modern timber-framed buildings towards larger spans and higher floors, the composite structure system of glued laminated timber arches and steel columns has been increasingly widely used in large public buildings such as stadiums and exhibition halls due to its excellent mechanical properties and aesthetics. This type of structure typically employs double-layered glued laminated timber arches to enhance overall stiffness and load-bearing capacity; however, the reliability of joint connections and construction efficiency have become key factors restricting its engineering application.
[0003] Currently, traditional timber structure connection methods (such as toothed plate connections, bolt-plate connections, or steel filler plate connections) are mainly suitable for small- to medium-span single-story timber structures. In the connection of large-span, high-load double-layer glued laminated timber arches with steel columns, these traditional joints generally present significant stress concentration in the joint area and require high precision in timber cutting. For example, rigid connections lead to unclear force transmission paths, easily causing stress concentration at the ends of the glued laminated timber and at the connection points with the steel components, reducing the fatigue performance of the joint and causing localized crushing or cracking of the timber. Although existing technologies attempt to improve joint performance by adding stiffening ribs or increasing the size of the connecting plates, they have not fundamentally solved the problems of optimizing the force transmission path and simplifying construction.
[0004] Therefore, for large-span double-layer glued laminated timber arch structures, there is an urgent need for a new type of connection node that simplifies the node construction, reduces on-site welding, and lowers the precision requirements for timber processing while ensuring clear stress distribution at the node. Utility Model Content
[0005] The purpose of this utility model is to provide a connection node between a large-span double-layer glued laminated timber arch and a steel column. While ensuring clear stress distribution at the node, the node structure is simplified and the amount of on-site welding is reduced, enabling rapid on-site construction of the arch foot of the large-span timber arch.
[0006] To achieve the above objectives, this utility model provides a connection node between a large-span double-layer glued laminated timber arch and a steel column, comprising a steel column, a double-layer glued laminated timber arch, steel corbels, reinforcing timber beams, and several steel inserts. One end of the steel corbel is welded to the steel column, and the other end of the steel corbel facing away from the steel column is welded with the steel insert. The double-layer glued laminated timber arch comprises two layers of parallel glued laminated timber arch members with a gap. The ends of the glued laminated timber arch members abut against the steel corbels and have several slots corresponding to the steel inserts. The steel inserts are inserted into the corresponding slots. The reinforcing timber beams are sandwiched between the ends of the two layers of glued laminated timber arch members and abut against the steel corbels. The ends of the glued laminated timber arch members are bolted to the steel inserts and the reinforcing timber beams.
[0007] Optionally, the steel insert plate is welded perpendicularly to the other end of the steel bracket away from the steel column, and the steel insert plate is inserted perpendicularly into the slot at the end of the glued laminated timber arch member.
[0008] Optionally, the thickness of the steel insert plate is between 20-30 mm.
[0009] Optionally, stiffening plates are welded inside the steel column and at positions corresponding to the steel insert plate inside the steel bracket.
[0010] Optionally, the stiffening plate has the same thickness as the steel insert plate.
[0011] Optionally, the connection node between the large-span double-layer glued laminated timber arch and the steel column further includes several bolts and several nuts. The bolts penetrate vertically through the end of the glued laminated timber arch member, the steel insert plate, and the reinforcing timber beam, and are then locked by the nuts.
[0012] Optionally, the bolts are clearance-fitted with the ends of the glued laminated timber arch members, the bolt holes on the steel inserts and the reinforcing timber beams.
[0013] Optionally, the bolt holes in the steel insert plate for the bolts to pass through are oblong holes.
[0014] Optionally, the end of the reinforcing timber beam furthest from the steel insert is connected to the double-layer glued laminated timber arch using self-tapping screws.
[0015] Optionally, the end of the reinforcing timber beam away from the steel insert is connected to the two layers of glued laminated timber arch members by a number of first self-tapping screws and a number of second self-tapping screws, and the first self-tapping screws and the second self-tapping screws are staggered.
[0016] This utility model provides a connection node between a large-span double-layer glued laminated timber arch and a steel column, which has at least one of the following beneficial effects:
[0017] 1) By inserting reinforcing timber beams into the gaps of the double-layer glued laminated timber arches, the connection between the double-layer glued laminated timber arches and the steel columns becomes more reliable, thereby enabling the internal forces of the glued laminated timber arches to be effectively transferred to the steel columns. The stress at the joints is clear, and the entire connection joint structure is simple and beautiful, with less on-site welding, which is conducive to the rapid on-site construction of the arch feet of large-span timber arches.
[0018] 2) Stiffening plates are welded inside the steel columns and steel brackets at the positions corresponding to the steel inserts to enhance the shear stiffness of the joints;
[0019] 3) The bolts and the bolt holes on the ends of the glued laminated timber arch members, the steel inserts, and the reinforcing timber beams are clearance fits. By adopting clearance fits, the glued laminated timber arch members are allowed to rotate slightly around the bolt axis under vertical loads, achieving hinged characteristics. Shear force can be transferred to the steel brackets through the bolts and steel inserts.
[0020] 4) The bolt holes on the steel insert plate are elongated holes to adjust for construction errors and ensure that the bolts can pass smoothly through the double-layered glued laminated timber arch, steel insert plate and reinforced timber beam. Attached Figure Description
[0021] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:
[0022] Figure 1 This is a front view of the connection node between a large-span double-layer glued laminated timber arch and a steel column provided in an embodiment of the present invention;
[0023] Figure 2 for Figure 1 A cross-sectional view along the AA direction.
[0024] in:
[0025] 1-Steel column; 2-Double-layer glued laminated timber arch; 3-Steel corbel; 4-Reinforced timber beam; 5-Steel insert plate; 6-Stiffening plate; 7-Horizontal stiffening plate; 8-Bolt; 9-Nut; 10-First self-tapping screw; 11-Second self-tapping screw. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] Furthermore, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes that element. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0030] Please refer to Figures 1-2 This embodiment provides a connection node between a large-span double-layer glued laminated timber arch and a steel column, including a steel column 1, a double-layer glued laminated timber arch 2, a steel corbel 3, a reinforcing timber beam 4, and several steel inserts 5. One end of the steel corbel 3 is welded to the steel column 1, and the other end of the steel corbel 3 away from the steel column 1 is welded with a steel insert 5. The double-layer glued laminated timber arch 2 includes two layers of parallel glued laminated timber arch members with a gap. The ends of the glued laminated timber arch members are pressed against the steel corbel 3 and have several slots corresponding to the steel inserts 5. The steel inserts 5 are inserted into the corresponding slots. The reinforcing timber beam 4 is sandwiched between the ends of the two layers of glued laminated timber arch members and is pressed against the steel corbel 3. The ends of the glued laminated timber arch members are bolted to the steel inserts 5 and the reinforcing timber beam 4.
[0031] By inserting reinforcing timber beams 4 into the gaps of the double-layer glued laminated timber arch 2, the connection between the double-layer glued laminated timber arch 2 and the steel column 1 becomes more reliable. This allows the internal forces of the glued laminated timber arch to be effectively transferred to the steel column 1, resulting in clear force distribution at the joint. Furthermore, the entire connection joint has a simple and elegant structure with minimal on-site welding, which facilitates rapid on-site construction of the arch foot of a large-span timber arch.
[0032] Specifically, in this embodiment, the steel bracket 3 is welded to a predetermined height position of the steel column 1. The horizontal extension length of the steel bracket 3 can be determined according to the cross-sectional height of the glued laminated timber arch, and this utility model does not impose any restrictions on this.
[0033] In this embodiment, the steel insert plate 5 is welded perpendicularly to the other end of the steel bracket 3 away from the steel column 1, and the steel insert plate 5 is inserted perpendicularly into the slot at the end of the glued laminated timber arch member. The thickness of the steel insert plate 5 needs to meet the shear stress calculation, and is usually not less than 20mm. Preferably, the thickness of the steel insert plate 5 is between 20-30mm. During welding, it is necessary to ensure that the steel insert plate 5 and the steel bracket 3 have an equal strength connection.
[0034] Preferred, such as Figure 2 As shown, stiffening plates 6 are welded inside the steel column 1 and the steel bracket 3 at positions corresponding to the steel insert plate 5 to enhance the shear stiffness of the joint. More preferably, the stiffening plates 6 and the steel insert plate 5 have the same thickness.
[0035] For example, there are four steel insert plates 5, so there are also four stiffening plates 6 welded inside the steel column 1 and inside the steel bracket 3 at the positions corresponding to the steel insert plates 5.
[0036] Optionally, several horizontal stiffening plates 7 are vertically arranged inside the steel column 1. The horizontal stiffening plates 7 are arranged perpendicular to the axial direction of the steel column 1 to provide internal support for the column wall, significantly improve the local bending stiffness, and prevent the column wall from being crushed in the stress concentration area.
[0037] It should be noted that the double-layer glued laminated timber arch 2 includes two layers of parallel glued laminated timber arch members with a gap. The reinforcing timber beam 4 is only sandwiched between the ends of the two layers of glued laminated timber arch members. That is, the length of the reinforcing timber beam 4 is much smaller than the length of the glued laminated timber arch members. It only needs to be set at the hinged connection node between the double-layer glued laminated timber arch 2 and the steel column 1.
[0038] Please continue to refer to Figure 2 The connection nodes between the large-span double-layer glued laminated timber arch and the steel columns also include several bolts 8 and several nuts 9. The bolts 8 penetrate vertically through the ends of the glued laminated timber arch members, the steel inserts 5, and the reinforcing timber beams 4, and are then locked in place by the nuts 9. In actual construction, several bolt holes can be pre-drilled on the ends of the two glued laminated timber arch members, the steel inserts 5, and the reinforcing timber beams 4. The bolts 8 are then sequentially passed through the bolt holes of one glued laminated timber arch member, the steel inserts 5, the reinforcing timber beams 4, and the other glued laminated timber arch member, and then locked in place by the nuts 9.
[0039] Preferably, the bolt 8 is clearance-fitted with the bolt holes on the ends of the glued laminated timber arch member, the steel insert plate 5, and the reinforcing timber beam 4. By using a clearance fit (it is recommended that the hole diameter be 1-2 mm larger than that of the bolt 8), the glued laminated timber arch member is allowed to rotate slightly around the axis of the bolt 8 under vertical load, achieving hinged characteristics. Shear force can be transferred to the steel bracket 3 through the bolt 8 and the steel insert plate 5.
[0040] In this embodiment, the diameter of bolt 8 is determined based on shear force calculations, and the bolt holes need to be prefabricated and aligned. Furthermore, this invention does not limit the number or type of bolt 8; they can be selected according to requirements.
[0041] Preferably, the bolt holes on the steel insert plate 5 for the bolts 8 to pass through are elongated holes, which are used to adjust for construction errors and ensure that the bolts 8 can pass smoothly through the double-layer glued laminated timber arch 2, the steel insert plate 5 and the reinforcing timber beam 4.
[0042] Preferably, in addition to bolted connections, the end of the reinforced timber beam 4 away from the steel insert plate 5 is also connected to the double-layer glued laminated timber arch 2 by self-tapping screws to form a more stable double-beam structure.
[0043] More preferably, the end of the reinforced timber beam 4 furthest from the steel insert plate 5 is connected to the two layers of glued laminated timber arch members by a number of first self-tapping screws 10 and a number of second self-tapping screws 11, respectively, and the first self-tapping screws 10 and second self-tapping screws 11 are staggered. Figure 2 As shown, the end of the reinforcing timber beam 4 away from the steel insert plate 5 is connected to one of the layers of glued laminated timber arch components by a number of first self-tapping screws 10 arranged in parallel. The end of the reinforcing timber beam 4 away from the steel insert plate 5 is connected to another layer of glued laminated timber arch components by a number of second self-tapping screws 11 arranged in parallel. The first self-tapping screws 10 and the second self-tapping screws 11 are staggered. The spacing of the self-tapping screws should ensure that the reinforcing timber beam 4 and the double-layer glued laminated timber arch 2 are subjected to combined forces. This utility model does not impose specific restrictions on the number, type and distribution of the self-tapping screws.
[0044] Of course, in addition to using self-tapping screws, the end of the reinforced wooden beam 4 away from the steel insert plate 5 can also be connected to the double-layer glued laminated timber arch 2 with epoxy adhesive. This utility model does not limit this.
[0045] The construction process for the connection node between the large-span double-layer glued laminated timber arch and the steel column provided in this embodiment of the utility model is as follows:
[0046] S1. Weld steel brackets 3 at the predetermined height position of steel column 1. Steel brackets 3 can be pre-welded with steel insert plates 5 in the factory.
[0047] S2. Hoist the two layers of glued laminated timber arch components to the steel bracket 3 respectively, so that the ends of the two layers of glued laminated timber arch components are pressed against the end face of the steel bracket 3 respectively, and insert the steel insert plate 5 into the corresponding slot on the glued laminated timber arch component.
[0048] S3. Hoist the reinforced timber beam 4 and insert it into the gap of the double-layer glued laminated timber arch 2 to fill it. At the same time, tighten the end face of the corbel of the steel column 1 and fix it with double rows of self-tapping screws to form a stable double-beam.
[0049] S4. Use bolts 8 and nuts 9 to connect the ends of the glued laminated timber arch components, the steel inserts 5, and the reinforcing timber beams 4.
[0050] In summary, this utility model embodiment provides a connection node between a large-span double-layer glued laminated timber arch and a steel column. By inserting reinforcing timber beams 4 into the gaps of the double-layer glued laminated timber arch 2, the connection between the double-layer glued laminated timber arch 2 and the steel column 1 becomes more reliable. This allows the internal forces of the glued laminated timber arch to be effectively transmitted to the steel column 1, resulting in a clear force distribution at the node. Furthermore, the entire connection node has a simple and elegant structure with minimal on-site welding, which facilitates rapid on-site construction of the arch foot of the large-span timber arch.
[0051] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A connection node between a large-span double-layer glued laminated timber arch and a steel column, characterized in that, The system includes steel columns, double-layered glued laminated timber arches, steel corbels, reinforcing timber beams, and several steel inserts. One end of the steel corbel is welded to the steel column, and the other end of the steel corbel, away from the steel column, is welded with the steel insert. The double-layered glued laminated timber arch comprises two parallel layers of glued laminated timber arch members with a gap between them. The ends of the glued laminated timber arch members abut against the steel corbels and have several slots corresponding to the steel inserts. The steel inserts are inserted into the corresponding slots. The reinforcing timber beams are sandwiched between the ends of the two layers of glued laminated timber arch members and abut against the steel corbels. The ends of the glued laminated timber arch members are bolted to the steel inserts and the reinforcing timber beams.
2. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 1, characterized in that, The steel insert plate is welded perpendicularly to the other end of the steel bracket away from the steel column, and the steel insert plate is inserted perpendicularly into the slot at the end of the glued laminated timber arch member.
3. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 1, characterized in that, The thickness of the steel insert plate is between 20-30mm.
4. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 1, characterized in that, Stiffening plates are welded inside the steel column and inside the steel bracket at positions corresponding to the steel insert plate.
5. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 4, characterized in that, The stiffening plate has the same thickness as the steel insert plate.
6. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 1, characterized in that, The connection node between the large-span double-layer glued laminated timber arch and the steel column also includes several bolts and several nuts. The bolts penetrate vertically through the end of the glued laminated timber arch member, the steel insert plate and the reinforcing timber beam and are then locked by the nuts.
7. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 6, characterized in that, The bolts are clearance-fitted with the ends of the glued laminated timber arch members, the bolt holes on the steel inserts and the reinforcing timber beams.
8. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 6, characterized in that, The bolt holes on the steel insert plate for the bolts to pass through are oblong holes.
9. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 1, characterized in that, The end of the reinforced timber beam furthest from the steel insert is connected to the double-layer glued laminated timber arch by self-tapping screws.
10. The connection node between the large-span double-layer glued laminated timber arch and the steel column as described in claim 9, characterized in that, The end of the reinforced timber beam away from the steel insert plate is connected to the two layers of glued laminated timber arch components by a number of first self-tapping screws and a number of second self-tapping screws, and the first self-tapping screws and the second self-tapping screws are staggered.