Method for erecting a rigid frame structure at the top end of a steel corridor fixed support

Abstract

The application relates to a kind of erection methods of steel corridor fixed support top end rigid frame structure, comprising: S100, a end rigid frame is respectively arranged at the top of two fixed support columns;S200, the top of one of fixed support columns is fixedly connected with end steel frame through fixed support, and the other fixed support column is slidably connected with end steel frame through sliding support;S300, end steel frame at fixed support is fixedly connected between wall skin purlin and roof purlin, and fixedly connected between transverse main beam and longitudinal secondary beam at fixed support;S400, end steel frame at sliding support is slidably connected between wall skin purlin and roof purlin, and slidably connected between transverse main beam and longitudinal secondary beam at sliding support.Compared with prior art, the application reduces the number of end rigid frame at fixed support under the condition that corridor truss stress is unchanged and integrity is not affected, and reduces related support system, so as to reduce steel consumption and save investment cost.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a method for erecting a rigid frame structure at the top end of a steel corridor fixed support. Background Technology

[0002] Steel structure elevated corridors are widely used in various industrial sectors to ensure smooth process flow and connect different workshops. In particular, it is very common for the total length of corridors in a mineral processing plant to exceed one thousand meters.

[0003] The rigid frames at both ends of the steel corridor truss are an important part of the longitudinal and transverse lateral force resisting system of the corridor. They enable the separate vertical trusses on both sides of the corridor to form a rigid whole, and serve as the support points for the horizontal trusses formed by the support, together forming a complete three-dimensional force-bearing structure.

[0004] The end frames transfer the vertical and horizontal forces of the corridor to the supports, which then transfer them to the supports or building. To ensure the lateral stiffness and stability of the corridor, the end frames typically have high stiffness, and the column sections of the end frames are generally large, usually using H-beams. For the end frames at the top of the fixed supports, the relevant corridor trusses are generally calculated as simply supported trusses, with truss spans typically around 3m. To ensure that adjacent trusses form simply supported sections, the traditional practice is to install two end frames at the top of each column of the fixed supports. Based on the cross-sectional dimensions of the end frames, the clear distance between the two end frames should not be less than 100mm, and both should be equipped with inter-column bracing, upper chord horizontal bracing, and lower chord horizontal bracing.

[0005] However, the current traditional approach involves installing two end frames at the top of each column of the fixed support, and the center of each end frame column does not coincide with the center of the fixed support column. This results in eccentric stress on the fixed support column due to the load transmitted from the end frames, which is detrimental to the stress distribution of the corridor support. In addition, since the two inner end frames at the top of each column of the fixed support have no effect on the overall stress of the truss, but the traditional approach requires the installation of two inner end frames, as well as inter-column bracing, upper chord horizontal bracing, and lower chord horizontal bracing between the two inner end frames, the amount of steel used in the steel structure is greatly increased.

[0006] In view of this, the present invention is hereby proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a method for erecting a rigid frame structure at the top end of a steel corridor fixed support, so as to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A method for erecting a rigid frame structure at the top end of a steel corridor fixed support includes the following steps:

[0010] S100, A rigid frame is installed at the top of each of the two fixed support columns;

[0011] S200, the top of one of the fixed support columns is fixedly connected to the end steel frame by a fixed support, and the other fixed support column is slidably connected to the end steel frame by a sliding support;

[0012] S300, a fixed connection is used between the end steel frame at the fixed support and the wall purlin and roof purlin, and a fixed connection is used between the transverse main beam and the longitudinal secondary beam at the fixed support;

[0013] S400, a sliding connection is used between the end steel frame at the sliding support and the wall purlins and roof purlins, and a sliding connection is used between the transverse main beam and the longitudinal secondary beam at the sliding support.

[0014] Preferably, in S100:

[0015] The vertical centerline of each end steel frame coincides with the vertical centerline of the fixed support column at the lower end.

[0016] Preferably, in S400:

[0017] A first angle steel is fixed on the end steel frame at the sliding support, and the first angle steel will connect the wall purlins on the left and right sides at the sliding support.

[0018] The first angle steel is fixedly connected to the wall purlin on the right side, and the first angle steel is slidably connected to the wall purlin on the left side.

[0019] Preferably, the left wall purlin has an elliptical hole, and the limiting bolt passes through the first angle steel and the elliptical hole, allowing the right wall purlin to slide within the range of the elliptical hole.

[0020] Preferably, in S400:

[0021] A second angle steel is fixed on the end steel frame at the sliding support, and the second angle steel will connect the roof purlins on the left and right sides of the sliding support.

[0022] The second angle steel is fixedly connected to the roof purlin on the right side, and slidably connected to the roof purlin on the left side.

[0023] Preferably, an elliptical hole is provided on the left roof purlin, and the limiting bolt passes through the second angle steel and the elliptical hole, so that the right roof purlin can slide within the range of the elliptical hole.

[0024] Preferably, in S400:

[0025] Longitudinal secondary beams are provided on the left and right sides of the transverse main beam at the sliding support. The longitudinal secondary beam on the right is fixed to the transverse main beam, and the longitudinal secondary beam on the left has an elliptical hole. The limiting bolt passes through the longitudinal secondary beam on the right and the elliptical hole, so that the longitudinal secondary beam on the right can slide within the range of the elliptical hole.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. This invention reduces the number of end frames at the fixed supports and the related support systems (inter-column supports, upper chord horizontal supports, and lower chord horizontal supports) while ensuring that the stress on the corridor truss remains unchanged and the overall integrity is not affected. Therefore, it reduces the amount of steel used and saves investment costs.

[0028] 2. In this invention, only one end frame is set at the top of each column of the fixed support, and the center of the end frame column coincides with the center of the fixed support steel column. Compared with the traditional method, the load transmitted by the end frame does not have the problem of eccentric force on the fixed support steel column. The eccentric force is changed to the central force, which is very advantageous for the corridor support.

[0029] 3. Compared with traditional design methods, this invention simplifies the design of the fixed support column head by improving the connection method, which is more conducive to the fabrication and installation of steel structure components, shortens the construction cycle, and improves construction efficiency, thus having certain economic and practical advantages.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic elevation view of the traditional erection method of the top end rigid frame structure of the steel corridor fixed support in the prior art of this invention.

[0033] Figure 2 This is a schematic diagram of the planar arrangement of roof purlins and upper chord horizontal supports in the traditional erection method of the top end rigid frame structure of the steel corridor fixed support in the prior art of this invention.

[0034] Figure 3 This is a schematic diagram of the plan layout of the walkway platform beam and the lower chord horizontal support in the traditional erection method of the top end rigid frame structure of the steel corridor fixed support in the prior art of the present invention.

[0035] Figure 4 This is an elevation view of a method for erecting a top end rigid frame structure of a steel corridor fixed support according to an embodiment of the present invention.

[0036] Figure 5 This is a cross-sectional view of the middle rigid frame in a method for erecting the top rigid frame structure of a steel corridor fixed support provided in an embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the plan layout of the roof purlins and upper chord horizontal supports in a method for erecting the top end rigid frame structure of a steel corridor fixed support provided in an embodiment of the present invention.

[0038] Figure 7 This is a schematic diagram of the plan layout of the walkway platform beam and the lower chord horizontal support in the erection method of the top end rigid frame structure of a steel corridor fixed support provided in an embodiment of the present invention.

[0039] Figure 8 This is a schematic diagram of the connection node between the end steel frame at the sliding support and the wall purlin in the erection method of the top end rigid frame structure of the steel corridor fixed support provided in an embodiment of the present invention.

[0040] Figure 9 This is a schematic diagram of the connection node between the end steel frame at the sliding support and the roof purlin in the erection method of the top end rigid frame structure of the steel corridor fixed support provided in an embodiment of the present invention.

[0041] Figure 10 for Figure 9 A schematic diagram of the AA perspective in the image.

[0042] Figure 11 This is a schematic diagram of the connection node between the transverse main beam and the longitudinal secondary beam at the sliding support in the erection method of the top end rigid frame structure of the steel corridor fixed support provided in an embodiment of the present invention.

[0043] Figure 12 for Figure 11 A schematic diagram from the perspective of a BB (Browser).

[0044] Figure 13 for Figure 11 A schematic diagram of the CC view.

[0045] The diagram is shown below:

[0046] 1. Fixed support column; 2. End steel frame; 3. Fixed support; 4. Sliding support; 5. Wall purlin; 6. Roof purlin; 7. Horizontal main beam; 8. Longitudinal secondary beam; 9. First angle steel; 10. Elliptical hole; 11. Limiting bolt; 12. Second angle steel; 13. Inter-column bracing; 14. Upper chord horizontal bracing; 15. Lower chord horizontal bracing; 16. Walkway slab. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. 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.

[0048] like Figure 1-3 As shown, in the prior art of this invention, each column of the fixed support is equipped with two end frames at its top, and the center of each end frame column does not coincide with the center of the fixed support steel column. The load transmitted from the end frames has an eccentric force problem on the fixed support steel column, which is detrimental to the stress of the corridor support. In addition, since the two inner end frames at the top of each column of the fixed support have no effect on the overall stress of the truss, but the traditional method requires the installation of two inner end frames, and at the same time, column supports 13, upper chord horizontal supports 14 and lower chord horizontal supports 15 need to be installed between the two inner end frames, which greatly increases the amount of steel used in the steel structure.

[0049] Therefore, as Figure 4-7 As shown in the figure, an embodiment of the present invention provides a method for erecting a rigid frame structure at the top end of a steel corridor fixed support, comprising the following steps:

[0050] S100, A rigid frame is installed at the top of each of the two fixed support columns 1;

[0051] S200, the top of one of the fixed support columns 1 is fixedly connected to the end steel frame 2 by a fixed support 3, and the other fixed support column 1 is slidably connected to the end steel frame 2 by a sliding support 4;

[0052] S300, the end steel frame 2 at the fixed support 3 is fixedly connected to the wall purlin 5 and the roof purlin 6, and the transverse main beam 7 and the longitudinal secondary beam 8 at the fixed support 3 are fixedly connected.

[0053] S400, the end steel frame 2 at the sliding support 4 is connected to the wall purlin 5 and the roof purlin 6 by a sliding connection, and the transverse main beam 7 and the longitudinal secondary beam 8 at the sliding support 4 are connected by a sliding connection.

[0054] In step S100, the present invention sets only one end frame at the top of each column in the two sections of the fixed support, and the center of the end frame column coincides with the center of the fixed support steel column. Compared with the traditional approach, the load transmitted by the end frame does not have the problem of eccentric force on the fixed support steel column. The eccentric force is changed to the central force, which is very beneficial to the corridor support.

[0055] Secondly, for this invention, while ensuring that the stress on the corridor truss remains unchanged and the overall integrity is not affected, the number of end frames at the fixed supports is reduced, and the related support systems (inter-column support 13, upper chord horizontal support 14, lower chord horizontal support 15) are also reduced, thus reducing the amount of steel used and saving investment costs.

[0056] Furthermore, to ensure that the corridor can freely expand and contract within a certain range under temperature changes and seismic forces, the present invention incorporates the following design modifications for the following connection nodes:

[0057] First of all, with Figure 4 Taking the fixed support columns 1 on the left and right sides as an example, the top of the fixed support column 1 on the left is set as one end rigid frame. The bottom of the end rigid frame column is connected to the top of the fixed support column 1 by a fixed support 3. In the traditional way, the end steel frame 2 is reliably connected to the top of the fixed support column 1 by four fixed installation bolts and welds. The bottom of the other end rigid frame column on the right is connected to the top of the fixed support column 1 by a sliding support 4. The construction of the sliding support 4 is the same as that of the traditional corridor.

[0058] like Figure 8 As shown, when the right-side end steel frame 2 is connected by a sliding support 4, in order to further enable the roof purlins 6, wall purlins 5, transverse main beams 7, and longitudinal main beams to expand and contract within a certain range under temperature changes and seismic action, an improved connection method is proposed between the end steel frame at the sliding support 4 and the wall purlins 5: A first angle steel 9 is fixed on the end steel frame 2 at the sliding support 4, and the first angle steel 9 connects the wall purlins 5 on both sides of the sliding support 4; wherein the first angle steel 9 is fixedly connected to the right-side wall purlin 5, and the first angle steel 9 is slidably connected to the left-side wall purlin 5. An elliptical hole 10 is provided on the left-side wall purlin 5, and a limiting bolt 11 passes through the first angle steel 9 and the elliptical hole 10, allowing the right-side wall purlin 5 to slide within the range of the elliptical hole 10.

[0059] In this invention, the first angle steel 9 serves as a purlin support to connect the wall purlins 5 on both sides. The first angle steel 9 is connected to the end frame by a weld. The wall purlin 5 on the right side is connected to the end frame by a weld. The upper and lower limbs of the wall purlin 5 on the left side are partially cut off (equivalent to cutting off the wing plate of the channel steel, leaving only the web portion). At this time, the wall purlin 5 on the left side is not welded to the end frame at the sliding support 4. The wall purlin 5 on the right side slides within the range of the elliptical hole 10 only by passing the limiting bolt 11 through the first angle steel 9 and the elliptical hole 10. This ensures that it can freely expand and contract along the corridor under temperature changes and seismic action.

[0060] like Figure 9-10 As shown, the improved connection between the end frame of the sliding support 4 and the roof purlin 6 in this invention is as follows: A second angle steel 12 is fixed on the end frame 2 at the sliding support 4, and the second angle steel 12 connects the roof purlins 6 on the left and right sides of the sliding support 4; wherein the second angle steel 12 is fixedly connected to the right roof purlin 6, and the second angle steel 12 is slidably connected to the left roof purlin 6. An elliptical hole 10 is provided on the left roof purlin 6, and a limiting bolt 11 passes through the second angle steel 12 and the elliptical hole 10, allowing the right roof purlin 6 to slide within the range of the elliptical hole 10.

[0061] In this invention, the second angle steel 12 serves as a purlin support to connect the roof purlins 6 on both sides. The second angle steel 12 is connected to the end frame by a weld. The roof purlin 6 on the right side is connected to the end frame by a weld. The upper and lower limbs of the roof purlin 6 on the left side are partially cut off (equivalent to cutting off the wing plate of the channel steel, leaving only the web portion). At this time, the roof purlin 6 on the left side is not welded to the end frame at the sliding support 4. The roof purlin 6 on the right side slides within the range of the elliptical hole 10 only by passing the limiting bolt 11 through the second angle steel 12 and the elliptical hole 10. This ensures that it can freely expand and contract along the corridor under temperature changes and seismic action.

[0062] like Figure 11-13 As shown, the improved connection method of the transverse main beam 7 and longitudinal secondary beam 8 at the sliding support 4 of the present invention is as follows: longitudinal secondary beams 8 are respectively provided on the left and right sides of the transverse main beam 7 at the sliding support 4, wherein the longitudinal secondary beam 8 on the right side is fixed on the transverse main beam 7, and the longitudinal secondary beam 8 on the left side is provided with an elliptical hole 10. The limiting bolt 11 passes through the longitudinal secondary beam 8 on the right side and the elliptical hole 10, so that the longitudinal secondary beam 8 on the right side can slide within the range of the elliptical hole 10.

[0063] In this invention, the transverse main beam 7 at the sliding support 4 serves as the main force transmission component, connecting the longitudinal secondary beams 8 on both sides of the node. Specifically, the longitudinal secondary beam 8 on the right side is welded to the transverse main beam 7 at the sliding support 4. The longitudinal secondary beam 8 on the left side is partially cut off at the upper and lower limbs and cannot be welded to the transverse main beam 7 at the sliding support 4. The longitudinal secondary beam 8 on the right side can slide within the range of the elliptical hole 10 only by passing through the limiting bolt 11 through the longitudinal secondary beam 8 on the right side and the elliptical hole 10, ensuring that it can freely expand and contract along the corridor under temperature changes and seismic action.

[0064] In this invention, the improved connection method of the aforementioned nodes simplifies the design of the fixed support column 1, facilitates the fabrication and installation of steel structure components, shortens the construction cycle, and improves construction efficiency, thus possessing certain economic and practical advantages. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "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. These terms are used only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0065] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0066] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A method for erecting a rigid frame structure at the top end of a steel corridor fixed support, characterized in that, Includes the following steps: S100, A rigid frame is installed at the top of each of the two fixed support columns; S200, the top of one fixed support column is fixedly connected to the end steel frame by a fixed support, and the other fixed support column is slidably connected to the end steel frame by a sliding support; S300, a fixed connection is used between the end steel frame at the fixed support and the wall purlin and roof purlin, and a fixed connection is used between the transverse main beam and the longitudinal secondary beam at the fixed support; S400, a sliding connection is used between the end steel frame at the sliding support and the wall purlins and roof purlins, and a sliding connection is used between the transverse main beam and the longitudinal secondary beam at the sliding support.

2. The method for erecting the top end rigid frame structure of a steel corridor fixed support according to claim 1, characterized in that, In S100: The vertical centerline of each end steel frame coincides with the vertical centerline of the fixed support column at the lower end.

3. The method for erecting the top end rigid frame structure of a steel corridor fixed support according to claim 2, characterized in that, In the S400: A first angle steel is fixed on the end steel frame at the sliding support, and the first angle steel will connect the wall purlins on the left and right sides at the sliding support. The first angle steel is fixedly connected to the wall purlin on the right side, and the first angle steel is slidably connected to the wall purlin on the left side.

4. The method for erecting the top end rigid frame structure of a steel corridor fixed support according to claim 3, characterized in that, The wall purlin on the left side has an oval hole. The limiting bolt passes through the first angle steel and the oval hole, allowing the wall purlin on the right side to slide within the range of the oval hole.

5. The method for erecting the top end rigid frame structure of the steel corridor fixed support according to claim 4, characterized in that, In the S400: A second angle steel is fixed on the end steel frame at the sliding support, and the second angle steel will connect the roof purlins on the left and right sides of the sliding support. The second angle steel is fixedly connected to the roof purlin on the right side, and slidably connected to the roof purlin on the left side.

6. The method for erecting the top end rigid frame structure of a steel corridor fixed support according to claim 5, characterized in that, The roof purlin on the left side has an elliptical hole. The limiting bolt passes through the second angle steel and the elliptical hole, allowing the roof purlin on the right side to slide within the range of the elliptical hole.

7. The method for erecting the top end rigid frame structure of the steel corridor fixed support according to claim 6, characterized in that, In the S400: Longitudinal secondary beams are provided on the left and right sides of the transverse main beam at the sliding support. The longitudinal secondary beam on the right is fixed to the transverse main beam, and the longitudinal secondary beam on the left has an elliptical hole. The limiting bolt passes through the longitudinal secondary beam on the right and the elliptical hole, so that the longitudinal secondary beam on the right can slide within the range of the elliptical hole.

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