CN105178443A - Bolt connecting joint suitable for single-layer latticed shell with rectangular steel pipes - Google Patents
Bolt connecting joint suitable for single-layer latticed shell with rectangular steel pipes Download PDFInfo
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Abstract
本发明公开了一种适用于矩形钢管单层网壳的螺栓连接节点，包括矩形钢管和连接节点，所述连接节点为空心圆柱体结构，所述空心圆柱体的内表面环向排列设置有弧形垫片，空心圆柱体的外表面相对应的设置有弧形连接板，弧形垫片、空心圆柱体与弧形连接板之间通过螺栓连接，所述弧形连接板与矩形钢管固定连接，矩形钢管的中轴线与空心圆柱体的中轴线相交于一点。本发明节点能够方便矩形钢管单层网壳杆件连接，保证节点刚度和承载力，减少焊缝长度，降低焊接热影响，简化施工工艺，利于工程推广应用。
The invention discloses a bolt connection node suitable for a rectangular steel pipe single-layer reticulated shell. The outer surface of the hollow cylinder is provided with an arc-shaped connecting plate correspondingly, and the arc-shaped gasket, the hollow cylinder and the arc-shaped connecting plate are connected by bolts, and the arc-shaped connecting plate is fixedly connected with the rectangular steel pipe , the central axis of the rectangular steel pipe intersects the central axis of the hollow cylinder at one point. The node of the invention can facilitate the connection of rectangular steel pipe single-layer reticulated shell rods, ensure the stiffness and bearing capacity of the node, reduce the length of the weld seam, reduce the influence of welding heat, simplify the construction process, and facilitate engineering popularization and application.
Description
技术领域technical field
本发明涉及大跨度空间结构连接节点，更具体的说，是涉及一种适用于矩形钢管单层网壳的螺栓连接节点。The invention relates to a connection node of a large-span space structure, and more specifically relates to a bolt connection node suitable for a rectangular steel pipe single-layer reticulated shell.
背景技术Background technique
现行《空间网格结构技术规程》(JGJ7‐2010)规定，单层网壳应采用刚接节点，如焊接球节点、相贯节点等，杆件多采用圆钢管、矩形钢管和H型钢，但是适用于矩形钢管杆件的节点较少，目前有隔板焊接节点、厚壁钢管节点、相贯节点及铸钢节点等，但是这些节点形式都存在不足。隔板焊接节点和厚壁钢管节点需要现场焊接，焊缝较多，施工繁琐，不利于建筑工业化的发展，且过多的焊缝会影响节点受力性能；相贯节点对主管和支管的尺寸有一定要求，制约了其应用；铸钢节点性能优良但是成本过高，不适于大范围推广应用。因此，需开发一种施工方便快捷，受力性能优良的矩形钢管单层网壳用节点。The current "Technical Regulations for Spatial Grid Structures" (JGJ7‐2010) stipulates that single-layer reticulated shells should use rigid joints, such as welded ball joints, intersecting joints, etc. There are few joints suitable for rectangular steel pipe members. At present, there are clapboard welded joints, thick-walled steel pipe joints, intersecting joints and cast steel joints, etc., but these joint forms have shortcomings. The clapboard welded joints and thick-walled steel pipe joints need to be welded on site. There are many welds, and the construction is cumbersome, which is not conducive to the development of building industrialization, and too many welds will affect the mechanical performance of the joints; There are certain requirements, which restrict its application; cast steel joints have excellent performance but the cost is too high, which is not suitable for large-scale promotion and application. Therefore, it is necessary to develop a rectangular steel pipe single-layer reticulated shell node with convenient and quick construction and excellent mechanical performance.
发明内容Contents of the invention
本发明的目的是为了克服现有技术中的不足，提供一种适用于矩形钢管单层网壳结构的螺栓连接节点，该节点能够方便矩形钢管单层网壳杆件连接，保证节点刚度和承载力，减少焊缝长度，降低焊接热影响，简化施工工艺，利于工程推广应用。The purpose of the present invention is to overcome the deficiencies in the prior art and provide a bolted connection node suitable for a rectangular steel pipe single-layer reticulated shell structure, which can facilitate the connection of rectangular steel pipe single-layer reticulated shell members and ensure the joint stiffness and bearing capacity force, reduce the length of the weld, reduce the heat impact of welding, simplify the construction process, and facilitate the popularization and application of projects.
本发明的目的是通过以下技术方案实现的：The purpose of the present invention is achieved through the following technical solutions:
一种适用于矩形钢管单层网壳的螺栓连接节点，包括矩形钢管和连接节点，所述连接节点为空心圆柱体结构，所述空心圆柱体的内表面环向排列设置有弧形垫片，空心圆柱体的外表面相对应的设置有弧形连接板，弧形垫片、空心圆柱体与弧形连接板之间通过螺栓连接，所述弧形连接板与矩形钢管固定连接，矩形钢管的中轴线与空心圆柱体的中轴线相交于一点。A bolt connection node suitable for a rectangular steel pipe single-layer reticulated shell, including a rectangular steel pipe and a connection node, the connection node is a hollow cylinder structure, and the inner surface of the hollow cylinder is circumferentially arranged with arc-shaped gaskets, The outer surface of the hollow cylinder is correspondingly provided with an arc-shaped connecting plate, and the arc-shaped gasket, the hollow cylinder and the arc-shaped connecting plate are connected by bolts, and the arc-shaped connecting plate is fixedly connected with the rectangular steel pipe, and the rectangular steel pipe The central axis intersects the central axis of the hollow cylinder at one point.
所述螺栓为全牙螺栓。The bolts are full tooth bolts.
所述弧形垫片与弧形连接板上的圆弧弧度分别与空心圆柱体的内表面和外表面相贴合。The arc-shaped spacers and the arcs on the arc-shaped connecting plate are fitted to the inner surface and the outer surface of the hollow cylinder respectively.
所述弧形连接板上还设置有固定槽。The arc connecting plate is also provided with a fixing groove.
所述螺栓与弧形连接板的连接处设置有防滑垫片。Anti-slip gaskets are provided at the connection between the bolt and the arc-shaped connecting plate.
所述弧形连接板与矩形钢管通过焊接方式固定。The arc connecting plate and the rectangular steel pipe are fixed by welding.
所述弧形连接板与矩形钢管竖向的连接角度范围为0°—20°。The vertical connection angle between the arc-shaped connecting plate and the rectangular steel pipe is in the range of 0°-20°.
与现有技术相比，本发明的技术方案所带来的有益效果是：Compared with the prior art, the beneficial effects brought by the technical solution of the present invention are:
1.本发明连接节点为空心圆柱体结构，空心圆柱体的内外表面分别相对称的设有弧形垫片和弧形连接板，弧形垫片、空心圆柱体与弧形连接板之间通过螺栓连接，弧形连接板与矩形钢管焊接固定，矩形钢管的中轴线与空心圆柱体的中轴线相交于一点；因此本发明节点的传力路径明确，节点受轴力作用时，轴力由螺栓受拉或弧形连接板与节点体间的挤压传递至节点；当节点受到弯矩作用时，弯矩由螺栓的拉力和弧形连接板与节点体间的挤压力传递；1. The connection node of the present invention is a hollow cylinder structure, and the inner and outer surfaces of the hollow cylinder are respectively symmetrically provided with an arc-shaped gasket and an arc-shaped connecting plate, and the arc-shaped gasket, the hollow cylinder and the arc-shaped connecting plate pass through Bolt connection, the arc-shaped connecting plate and the rectangular steel pipe are welded and fixed, and the central axis of the rectangular steel pipe intersects with the central axis of the hollow cylinder at one point; therefore, the force transmission path of the node of the present invention is clear, and when the node is subjected to axial force, the axial force is controlled by the bolt The compression between the tensioned or arc-shaped connecting plate and the node body is transmitted to the node; when the node is subjected to a bending moment, the bending moment is transmitted by the tension of the bolt and the extrusion force between the arc-shaped connecting plate and the node body;
2.本发明连接节点中弧形垫片、空心圆柱体与弧形连接板之间通过螺栓连接，且没有在节点处使用焊接方式连接，不会对节点刚度和承载力造成影响，整体抗弯刚度较高，节点本身承载力不足时可通过内部加劲等方式进行补强。此外，节点在预制完成后，可实现现场快速拼装和重复拆装，工艺简单，稳定可靠。2. The arc-shaped gaskets, hollow cylinders, and arc-shaped connecting plates in the connection nodes of the present invention are connected by bolts, and no welding is used at the nodes to connect, which will not affect the stiffness and bearing capacity of the nodes, and the overall bending resistance The rigidity is high, and when the bearing capacity of the node itself is insufficient, it can be reinforced by means of internal reinforcement. In addition, after the prefabrication of the nodes is completed, rapid assembly and repeated disassembly can be realized on site, the process is simple, stable and reliable.
附图说明Description of drawings
图1是本发明的结构示意图。Fig. 1 is a schematic structural view of the present invention.
图2是本发明的局部放大结构示意图。Fig. 2 is a schematic diagram of a partially enlarged structure of the present invention.
图3是弧形垫片的结构示意图。Fig. 3 is a schematic diagram of the structure of the arc gasket.
图4是弧形连接板的结构示意图。Fig. 4 is a schematic structural diagram of an arc-shaped connecting plate.
图5是矩形钢管中轴线与空心圆柱体中轴线相交的结构示意图。Fig. 5 is a schematic diagram of the intersection of the central axis of the rectangular steel pipe and the central axis of the hollow cylinder.
图6是矩形钢管与弧形连接板连接角度示意图。Fig. 6 is a schematic diagram of the connection angle between a rectangular steel pipe and an arc-shaped connecting plate.
附图标记：1-空心圆柱体2-矩形钢管3-弧形垫片4-弧形连接板5-螺栓6-固定槽7-空心圆柱体中轴线8-矩形钢管中轴线Reference signs: 1-hollow cylinder 2-rectangular steel pipe 3-arc spacer 4-arc connection plate 5-bolt 6-fixing groove 7-hollow cylinder central axis 8-rectangular steel pipe central axis
具体实施方式Detailed ways
下面结合附图对本发明作进一步的描述：Below in conjunction with accompanying drawing, the present invention will be further described:
如图1至图4所示，一种适用于矩形钢管单层网壳的螺栓连接节点，包括矩形钢管2和连接节点，连接节点由空心圆柱体1构成，空心圆柱体1的内表面环向排列设置有弧形垫片3，空心圆柱体1的外表面相对应的设置有弧形连接板4，弧形垫片3与弧形连接板4上的圆弧弧度分别与空心圆柱体1的内表面和外表面相贴合，弧形垫片3、空心圆柱体1与弧形连接板4之间通过螺栓5连接，螺栓5为全牙高强度螺栓，并配有防滑垫片，弧形连接板4上设有固定槽6，以便通过焊接方式与矩形钢管2固定连接，本实施例中，空心圆柱体1、弧形垫片3和弧形连接板4中均设置有连接孔以方便进行连接，其中弧形连接板4的连接孔为螺纹孔。As shown in Figures 1 to 4, a bolted connection node suitable for a rectangular steel pipe single-layer reticulated shell includes a rectangular steel pipe 2 and a connection node. The connection node is composed of a hollow cylinder 1, and the inner surface of the hollow cylinder 1 is circumferentially Arranged with arc-shaped gaskets 3, the outer surface of the hollow cylinder 1 is provided with an arc-shaped connecting plate 4 correspondingly, and the arc radians on the arc-shaped gasket 3 and the arc-shaped connecting plate 4 are respectively the same as those of the hollow cylinder 1. The inner surface and the outer surface are fitted together, the arc gasket 3, the hollow cylinder 1 and the arc connecting plate 4 are connected by bolts 5, the bolts 5 are high-strength bolts with full teeth, and are equipped with anti-skid gaskets, arc connection The plate 4 is provided with a fixing groove 6 so as to be fixedly connected with the rectangular steel pipe 2 by welding. In this embodiment, the hollow cylinder 1, the arc-shaped gasket 3 and the arc-shaped connecting plate 4 are all provided with connection holes to facilitate Connection, wherein the connecting hole of the arc connecting plate 4 is a threaded hole.
如图5和图6所示，矩形钢管中轴线8与空心圆柱体中轴线7相交于一点，且弧形连接板4与矩形钢管2竖向的连接角度范围为0°—20°。As shown in Figures 5 and 6, the central axis 8 of the rectangular steel pipe intersects the central axis 7 of the hollow cylinder at one point, and the vertical connection angle between the arc-shaped connecting plate 4 and the rectangular steel pipe 2 ranges from 0° to 20°.
本发明的上述组件中，空心圆柱体1由厚壁钢管进行切割打孔处理制作而成，其壁厚根据节点受力确定，外径根据矩形钢管2交汇角度、数量及矩形钢管2尺寸确定；弧形连接板4由厚壁钢管进行切割、铣平、铣槽及攻丝制成，其厚度由所连接矩形钢管2尺寸确定；矩形钢管2末端按照与弧形连接板4相交角度进行切割处理。In the above assembly of the present invention, the hollow cylinder 1 is made by cutting and punching thick-walled steel pipes, its wall thickness is determined according to the stress on the nodes, and its outer diameter is determined according to the intersection angle and quantity of the rectangular steel pipes 2 and the size of the rectangular steel pipes 2; The arc-shaped connecting plate 4 is made by cutting, milling, milling and tapping of thick-walled steel pipes, and its thickness is determined by the size of the connected rectangular steel pipe 2; the end of the rectangular steel pipe 2 is cut according to the angle of intersection with the arc-shaped connecting plate 4 .
本发明节点在进行节点安装时，将螺栓5和防滑垫片与弧形连接板4拧紧，并将弧形连接板4上的固定槽6与矩形钢管2焊接连接，以上工序在加工厂完成；在工程现场安装时，将螺栓5外露部分插入空心圆柱体1和弧形垫片3的孔位，拧紧螺母直至弧形连接板4内壁与空心圆柱体1的外表面紧密贴合。弧形垫片3及螺栓5需满足中华人民共和国国家标准《钢结构用高强度大六角头螺栓、大六角螺母、垫圈技术条件》(GB/T1231—2006)，矩形钢管2与弧形连接板4采用完全焊透对接焊缝相连，为方便现场安装，空心圆柱体1中的钻孔直径大于螺栓5直径1-2mm，螺栓5的型号、数量和钻孔位置由节点所受弯矩决定。When the node of the present invention is installed, the bolt 5 and the anti-slip gasket are tightened with the arc-shaped connecting plate 4, and the fixing groove 6 on the arc-shaped connecting plate 4 is welded and connected with the rectangular steel pipe 2. The above process is completed in the processing plant; When installing on the project site, insert the exposed part of the bolt 5 into the holes of the hollow cylinder 1 and the arc-shaped gasket 3, and tighten the nuts until the inner wall of the arc-shaped connecting plate 4 is closely attached to the outer surface of the hollow cylinder 1. The arc-shaped gasket 3 and the bolt 5 must meet the national standard of the People's Republic of China "Technical Conditions for High-Strength Large Hexagon Head Bolts, Large Hexagon Nuts, and Washers for Steel Structures" (GB/T1231-2006), and the rectangular steel pipe 2 and the arc-shaped connecting plate 4. They are connected by fully penetrated butt welds. For the convenience of on-site installation, the diameter of the hole drilled in the hollow cylinder 1 is 1-2 mm larger than that of the bolt 5. The type, quantity and location of the holes of the bolt 5 are determined by the bending moment on the joint.
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| CN105649200A (en) * | 2016-01-05 | 2016-06-08 | 苏州罗普斯金铝业股份有限公司 | Metal frame installation structure and sunlight room with same |
| CN105672477A (en) * | 2016-01-26 | 2016-06-15 | 天津大学 | High-strength bolt hollow hub node |
| CN105821963A (en) * | 2016-03-25 | 2016-08-03 | 东南大学 | Single-layer space lattice structure assembled double-ring node |
| CN106275468A (en) * | 2016-08-17 | 2017-01-04 | 哈尔滨飞机工业集团有限责任公司 | A kind of helicopter below deck equipment mounting bracket |
| CN106592778A (en) * | 2016-12-19 | 2017-04-26 | 东南大学 | Hollowed-out circular-ring-shaped space grid structure assembly type joint |
| CN106836476A (en) * | 2017-01-22 | 2017-06-13 | 东南大学 | Hexagonal space network assembling type node in a kind of outer shroud |
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| CN106592778B (en) * | 2016-12-19 | 2019-03-19 | 东南大学 | A kind of hollow out annular space network assembling type node |
| CN106836476A (en) * | 2017-01-22 | 2017-06-13 | 东南大学 | Hexagonal space network assembling type node in a kind of outer shroud |
| CN107989202A (en) * | 2017-12-20 | 2018-05-04 | 潮峰钢构集团有限公司 | A kind of elastic plastic experiment and its operating method using steel construction |
| CN108678168A (en) * | 2018-03-30 | 2018-10-19 | 天津大学 | A kind of bolt ring node suitable for aluminium alloy space network |
| CN111608267A (en) * | 2019-02-26 | 2020-09-01 | 天津大学 | A Assembled Hollow Hub Node Applicable to Rectangular Rod Aluminum Alloy Grid Structure |
| EP3882410A1 (en) | 2020-03-18 | 2021-09-22 | Ruch Innovation AG | New type of face nodal connection for surface structures |
| CN112431303A (en) * | 2020-11-23 | 2021-03-02 | 东南大学 | Double-topology ring node applied to fabricated single-layer grid structure |
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