Portal rigid frame column base node hinging mechanism and steel structure building

Abstract

The utility model provides a portal rigid frame column base node hinging mechanism and a steel structure building. The door-type rigid frame column base node hinging mechanism comprises a base, a limiting strip, a base hanging lug and a hinging roller, the hinging roller is connected with the bottom end of a door-type rigid frame stand column, the base is supported above a concrete foundation, the limiting strip and the base hanging lug are fixed above the base, the base hanging lug is hinged to the hinging roller through a fastener, a limiting groove is formed in the hinging roller, and the limiting groove is connected with the limiting strip. The limiting strip is contained in the limiting groove, and the rotating angle of the portal rigid frame stand column is limited through the limiting groove. According to the door-type rigid frame column base node hinging mechanism, more uniform stress distribution is provided through the hinging rollers, the arc faces of the hinging rollers make direct contact with the base, real hinging points are formed, the structure of the nodes is simplified, meanwhile, the stability and safety of connection are improved, and the structure is simple. The problems of local stress concentration, connection complexity, maintenance difficulty and the like of a traditional connection mode are solved.

Description

Technical Field

[0001] This utility model relates to the field of steel structure construction technology, and in particular to a portal frame column base hinge mechanism and a steel structure building. Background Technology

[0002] Currently, with the increasing market demand for steel structure factory buildings, especially in emerging industries such as rural industrial revitalization, urban livelihood security, high-end equipment manufacturing, new energy vehicle industry, and new materials industry, the demand for light steel factory building construction has shown a significant growth trend in recent years. Portal frames have become the most commonly used structural form for light steel factory building construction due to their superior advantages. Among them, portal frame light steel structures have become the most widely used light steel structure system in China due to their outstanding advantages such as clear force transmission path, high space utilization, easy component processing, and short construction period.

[0003] Traditional portal frame structures often feature hinged support designs for column bases, typically using flat plate supports. Anchor bolts are used for connection, arranged to meet flexibility requirements and simulate a hinged state as closely as possible, approximating the absence of moment transmission. This allows for better absorption and transfer of internal forces at the column base under normal operating loads and seismic loads. However, this traditional anchor bolt design and construction method has several practical drawbacks. First, the traditional bolted connection design restricts rotation at the column base, failing to fully realize the assumed effective rotation. This results in persistent moment transmission at the column base node, deviating from the design calculations and affecting the design life of the support and the overall structural stability. Second, the constantly changing internal forces in portal frame structures cause stress concentration at the bolted connection points, impacting connection reliability. Third, the complexity of traditional bolted connections can lead to loosening and fatigue failure during actual use, reducing the stiffness and strength of the connection and creating maintenance difficulties that urgently need to be addressed. Utility Model Content

[0004] The main purpose of this utility model is to provide a portal frame column base node hinge mechanism and a steel structure building, which aims to solve the problem of bending moment at the column base node and maintain consistency from design concept to actual effect.

[0005] To achieve the above objectives, this utility model provides a portal frame column base hinge mechanism, including a base, a limiting strip, a base lug, and a hinge roller, wherein...

[0006] The hinge roller is connected to the bottom end of the portal frame column. A base is supported above the concrete foundation. A limit strip and a base lug are fixed on the top of the base. The base lug and the hinge roller are hinged by fasteners. A limit groove is provided on the hinge roller. The limit strip is accommodated in the limit groove. The rotation angle of the portal frame column is limited by the limit groove.

[0007] Preferably, the portal frame column foot node hinge mechanism further includes a top seat welded to the bottom end of the portal frame column, and the hinge roller is fixed to the bottom end of the top seat.

[0008] Preferably, the hinge roller is provided with base lugs on both sides, and the hinge roller is hinged to the two base lugs on both sides.

[0009] Preferably, the limiting strip is welded to the top of the base, the base lugs are welded to the base, and the limiting strip is located between the two base lugs.

[0010] Preferably, the hinged roller includes a cuboid support portion located near the top seat and a semi-cylindrical rotating portion located below the support portion, with a limiting groove located on the side wall of the rotating portion.

[0011] Preferably, the fastener includes a locking pin passing through the mounting holes on the base lug and the hinge roller, and a limiting member fitted on the locking pin.

[0012] Preferably, the width of the base lug is greater than the width of the hinge roller, and the mounting hole on the hinge roller for the locking pin to pass through is a threaded hole.

[0013] Preferably, the portal frame column base hinge mechanism further includes a secondary grouting layer located between the base and the concrete foundation.

[0014] Preferably, both sides of the base lug are provided with a relief slope to prevent stress concentration.

[0015] This utility model also proposes a steel structure building, including the above-mentioned portal frame column foot node hinge mechanism, as well as a concrete foundation and portal frame columns.

[0016] The portal frame column base hinge mechanism proposed in this utility model has the following beneficial effects:

[0017] (1) By introducing the combination of base lugs and hinge rollers, the complete function of the column foot hinge node is realized with creative concept. The hinge roller provides a more uniform force distribution and, through its special design around its own center, realizes the unobstructed continuous contact rotation between the arc surface and the foundation base. Its complete force transmission path makes the column foot load transmission direct and effective, while forming a real hinge point structure. The hinge mechanism of this portal frame column foot node not only simplifies the structure of the node, but also improves the stability and safety of the connection, and solves the problems of local stress concentration, connection complexity and maintenance difficulty in traditional connection methods.

[0018] (2) The combination design of hinged roller and locking pin is adopted, which makes the connection more flexible and adaptable. The diameter of the hinged roller can be designed and adjusted according to the different working conditions of the upper structure and the lower foundation to meet the needs of different stresses and deformations.

[0019] (3) The combination of locking pins and perforated ear plates in the hinged connection mechanism of the column base of the portal frame effectively prevents unnecessary slippage of the node under external load, and improves the safety and integrity of the connection.

[0020] (4) Compared with the traditional column base node design, the hinged mechanism of the column base node of this portal frame adopts a relatively simple construction measure, which is conducive to reducing the manufacturing cost of the node and reducing the maintenance difficulty of the node.

[0021] (5) All components of the hinged joint mechanism of the column base of this portal frame can be standardized parts, which are easy to manufacture in the factory and install on site, thereby improving the feasibility of implementation;

[0022] (6) The hinged joint mechanism of the column base of this portal frame has the advantages of novel form, clear force, effective force transmission, simple structure and convenient installation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of the portal frame column base hinge mechanism of this utility model.

[0024] Figure 2 This is a side view of the hinged joint mechanism of the portal frame column base of this utility model.

[0025] Figure 3 This is a schematic diagram of the locking pin in the hinge mechanism of the portal frame column base node of this utility model.

[0026] In the diagram, 1 is the concrete foundation; 2 is the secondary pouring layer; 3 is the base; 4 is the limiting strip; 5 is the base hanging lug; 6 is the portal frame column; 7 is the top seat; 8 is the hinged roller; 801 is the limiting groove; 9 is the locking pin; and 901 is the limiting component.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] This utility model proposes a hinged joint mechanism for the column base of a portal frame.

[0031] Reference Figures 1 to 3 In this preferred embodiment, a portal frame column base hinge mechanism includes a base 3, a limiting strip 4, a base lug 5, and a hinge roller 8, wherein...

[0032] The hinged roller 8 is connected to the bottom end of the portal frame column 6. A base 3 is supported above the concrete foundation 1. A limit strip 4 and a base lug 5 are fixed on the base 3. The base lug 5 is hinged to the hinged roller 8 by fasteners. A limit groove 801 is provided on the hinged roller 8 (the bottom wall shape of the limit groove 801 is the same as the outer wall shape of the hinged roller 8). The limit strip 4 is accommodated in the limit groove 801. The rotation angle of the portal frame column 6 is limited by the limit groove 801.

[0033] The limiting component 901 is used to ensure that the base lug 5 does not fall off. The limiting groove 801 is matched with the size of the limiting strip 4. The limiting groove 801 is provided on the hinge roller 8. When installing the hinge roller, the limiting strip 4 is engaged with the limiting groove 801 to limit the rotation of the hinge roller 8 under load so as not to deviate from the center line of the base and the portal frame column, thereby improving the safety of the structure and making the structure simple and easy to implement.

[0034] Furthermore, referring to Figure 1 and Figure 2 The portal frame column foot node hinge mechanism also includes a top seat 7 welded to the bottom of the portal frame column 6, and a hinge roller 8 fixed to the bottom of the top seat 7.

[0035] Furthermore, referring to Figure 2The hinge roller 8 has base lugs 5 on both sides, and the hinge roller 8 is hinged to the two base lugs 5 on both sides. By setting two base lugs 5, the overall structural stability of the hinge mechanism of the portal frame column foot node is ensured.

[0036] In this embodiment, the limiting strip 4 is welded to the top of the base 3, the base hanging ear 5 is welded to the base 3, and the limiting strip 4 is located between the two base hanging ears 5.

[0037] Specifically, the articulated roller 8 includes a cuboid support portion located near the top seat 7 and a semi-cylindrical rotating portion located below the support portion, with a limiting groove 801 located on the side wall of the rotating portion.

[0038] The rotating part of the hinge roller 8 has a circular arc surface that directly contacts the base 3, ensuring that the hinge roller 8 can rotate smoothly in the horizontal direction. The hinge roller 8, which has a solid structure between the top seat 7 and the base 3, forms a complete connection structure with full hinge function. This helps to release the bending moment at the column base in traditional designs and solves the problem that existing hinge structures constrain the rotation of the upper main structure, which can easily lead to stress concentration and fatigue failure under long-term action.

[0039] Reference Figure 1 and Figure 3 The fasteners include locking pins 9 passing through mounting holes in the base lugs 5 and the hinge roller 8, and limiting members 901 fitted onto the locking pins 9. The locking pins 9 are passed through the mounting holes in the base lugs 5 and screwed into the threaded holes in the hinge roller 8. The threaded connection between the locking pins 9 and the hinge roller 8 ensures that the center of rotation of the hinge roller 8 coincides with the center point of the locking pins 9 when the column base is under load. Simultaneously, the introduction of the locking pins 9 provides a reliable fixing method for the connection, avoiding the loosening and detachment problems that may occur with traditional connection methods.

[0040] In addition, the width of the base lug 5 is greater than the width of the hinge roller 8, and the mounting hole on the hinge roller 8 for the locking pin 9 to pass through is a threaded hole.

[0041] Furthermore, the portal frame column base hinge mechanism also includes a secondary grouting layer 2 located between the base 3 and the concrete foundation 1. By setting the secondary grouting layer 2, a tight and stable connection between the base 3 and the concrete foundation 1 is ensured, and the flatness of the base 3 during installation is also guaranteed.

[0042] Furthermore, both sides of the base lug 5 are provided with avoidance slopes to prevent the base lug 5 from interfering with the top seat 7 when the portal frame column 6 rotates relative to the concrete foundation 1. On the other hand, it also prevents stress concentration.

[0043] All the steel structure components were constructed using factory prefabrication and modular assembly methods, which simplified the construction process, reduced on-site operation procedures, and aimed to achieve reliable quality. This reduced labor and time costs, and the standardized application effectively shortened the construction cycle, reduced material waste, and greatly improved construction efficiency and quality.

[0044] The portal frame column base hinge mechanism proposed in this embodiment has the following advantages:

[0045] (1) By introducing the combination of base lug 5 and hinge roller 8, the complete function of the column foot hinge node is realized with creative concept. The hinge roller 8 provides a more uniform force distribution and, through its special design around its own center, realizes the unobstructed continuous contact rotation between the arc surface and the foundation base 3. Its complete force transmission path makes the column foot load transmission direct and effective, while forming a real hinge point structure. The hinge mechanism of this portal frame column foot node not only simplifies the node structure, but also improves the stability and safety of the connection, and solves the problems of local stress concentration, connection complexity and maintenance difficulty in traditional connection methods.

[0046] (2) The combination design of hinged roller 8 and locking pin 9 is adopted, which makes the connection more flexible and adaptable. The diameter of hinged roller 8 can be designed and adjusted according to different working conditions of the upper structure and the lower foundation to meet the needs of different stresses and deformations.

[0047] (3) The combination of locking pin 9 and perforated ear plate in the hinge mechanism of the column foot node of the portal frame effectively prevents unnecessary slippage of the node under external load and improves the safety and integrity of the connection.

[0048] (4) Compared with the traditional column base node design, the hinged mechanism of the column base node of this portal frame adopts a relatively simple construction measure, which is conducive to reducing the manufacturing cost of the node and reducing the maintenance difficulty of the node.

[0049] (5) All components of the hinged joint mechanism of the column base of this portal frame can be standardized parts, which are easy to manufacture in the factory and install on site, thereby improving the feasibility of implementation;

[0050] (6) The hinged joint mechanism of the column base of this portal frame has the advantages of novel form, clear force, effective force transmission, simple structure and convenient installation.

[0051] This utility model also proposes a steel structure building.

[0052] In this preferred embodiment, a steel structure building includes a portal frame column base hinge mechanism, a concrete foundation 1, and portal frame columns 6. The specific structure and beneficial effects of the portal frame column base hinge mechanism are as described in the above embodiments and will not be repeated here.

[0053] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hinged connection mechanism for the column base node of a portal frame, characterized in that, Includes a base, a limiting strip, base lugs, and a hinge roller, among which, The hinge roller is connected to the bottom end of the portal frame column. A base is supported above the concrete foundation. A limit strip and a base lug are fixed on the top of the base. The base lug and the hinge roller are hinged by fasteners. A limit groove is provided on the hinge roller. The limit strip is accommodated in the limit groove. The rotation angle of the portal frame column is limited by the limit groove.

2. The portal frame column base hinge mechanism as described in claim 1, characterized in that, It also includes a top seat welded to the bottom of the portal frame column, with a hinged roller fixed to the bottom of the top seat.

3. The portal frame column base hinge mechanism as described in claim 1, characterized in that, The hinge roller is provided with base lugs on both sides, and the hinge roller is hinged to the two base lugs on both sides.

4. The portal frame column base hinge mechanism as described in claim 3, characterized in that, The limiting strip is welded to the top of the base, and the base hanging ears are welded to the base. The limiting strip is located between the two base hanging ears.

5. The portal frame column base hinge mechanism as described in claim 2, characterized in that, The hinged roller includes a cuboid support section located near the top seat and a semi-cylindrical rotating section located below the support section, with a limiting groove located on the side wall of the rotating section.

6. The portal frame column base hinge mechanism as described in claim 1, characterized in that, The fasteners include locking pins that pass through mounting holes on the base lugs and hinge rollers, and limiting members fitted onto the locking pins.

7. The portal frame column base hinge mechanism as described in claim 6, characterized in that, The width of the base lug is greater than the width of the hinge roller, and the mounting hole on the hinge roller for the locking pin to pass through is a threaded hole.

8. The portal frame column base hinge mechanism as described in claim 1, characterized in that, It also includes a secondary pouring layer located between the base and the concrete foundation.

9. The portal frame column base hinge mechanism as described in any one of claims 1 to 8, characterized in that, Both sides of the base hanging ear are provided with avoidance slopes.

10. A steel structure building, characterized in that, It includes the portal frame column base hinge mechanism as described in any one of claims 1 to 9, and also includes a concrete foundation and a portal frame column.

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