Bracket beside pier

Abstract

The utility model discloses a pier-side bracket, which relates to the field of pier-side bracket installation and construction, and comprises two supporting units symmetrically arranged at two ends of a pier body, an inclined-leg attached wall is arranged between the supporting units and the pier body, and each supporting unit comprises two inclined-leg bracket upright post groups which are symmetrically arranged; the first transverse attached wall is used for connecting the pier body with the upper end of the inclined-leg support stand column group; the second transverse attached wall is used for connecting the pier body with the middle end of the inclined-leg support stand column group; the steel strand is used for connecting the two inclined-leg support stand column sets in the supporting unit, one end of the steel strand is anchored to one inclined-leg support stand column set of the supporting unit, and the other end of the steel strand is used for penetrating through the pier body and the first transverse attached wall between the pier body and the inclined-leg support stand column set and is anchored to the other inclined-leg support stand column set. In the pushing process of the steel beam, the pulling stress borne by the pier body is converted into the pressure stress in the mode that the steel strand is pre-tensioned, and therefore the risk that the pier body cracks, is damaged and the like can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of pier side bracket installation and construction, specifically to a pier side bracket. Background Technology

[0002] With the continuous development of bridge engineering in my country, bridges with ultra-long spans are increasingly being constructed. In the construction of steel beam jacking, the size and weight of the steel beams also increase accordingly due to the increase in bridge span. During the jacking process, it is necessary to set up pier-side brackets and sliding beams on both sides of the pier to guide the jacking of the steel beams. The pier-side brackets bear the load of the steel beams and transfer the horizontal force generated by the jacking to the pier body.

[0003] Currently, embedded parts are commonly used to connect the pier-side bracket columns to the pier body. The embedded parts can balance the horizontal force generated by the jacking of the steel beam when subjected to compression or tension. However, the concrete material used in the pier body has a weak resistance to tensile forces, and the strength of the pier body is insufficient to withstand the horizontal force transmitted by the embedded parts, resulting in cracks and damage to the pier body. This seriously affects the overall quality and service life of the bridge. At the same time, because the weld seam connecting the embedded parts and the pier-side bracket to the wall has high requirements, the embedded parts are difficult to remove, which leads to difficulties in controlling the quality of the weld seam on site and poses significant safety hazards. Utility Model Content

[0004] This application provides a pier-side bracket, which can solve the technical problem that the pier body may be damaged during the steel beam jacking process in the prior art.

[0005] This application provides a pier-side bracket for supporting the weight of a top steel beam and serving as a platform for jacking the steel beam. It includes: two support units symmetrically arranged at both ends of the pier body, with inclined legs connecting the support units to the pier body. Each support unit includes two symmetrically arranged inclined leg support column groups, a first transverse wall connecting the pier body to the upper end of the inclined leg support column groups, and a second transverse wall connecting the pier body to the middle of the inclined leg support column groups; and a steel strand connecting the two inclined leg support column groups in the support unit, one end of which is anchored to one inclined leg support column group in the support unit, and the other end passing through the pier body and the first transverse wall between the pier body and the inclined leg support column groups, and anchored to the other inclined leg support column group.

[0006] In one embodiment, the inclined leg support column group includes a first inclined leg support column and a second inclined leg support column arranged side by side, and a connecting system is provided between the first inclined leg support column and the second inclined leg support column of the inclined leg support column group.

[0007] In one embodiment, a first transverse wall is provided between the upper end of the first inclined leg support column and the pier body, a second transverse wall is provided between the middle end of the first inclined leg support column and the pier body, an inclined leg wall is provided between the upper end of the first inclined leg support column and the pier body near the center, and a first transverse wall is provided between the upper end of the second inclined leg support column and the pier body, and the first transverse wall is perpendicular to the pier body.

[0008] In one embodiment, a first steel strand is connected between the two first inclined leg support columns of the two inclined leg support column group of the support unit, and a second steel strand is connected between the two second inclined leg support columns of the two inclined leg support column group of the support unit.

[0009] In one embodiment, one end of the first steel strand is anchored to one of the first inclined leg support columns of the support unit, and the other end passes sequentially through the first transverse wall between the first inclined leg support column and the pier body, the pier body, and the first transverse wall between the other first inclined leg support column of the support unit and the pier body, and is anchored to the other first inclined leg support column of the support unit. One end of the second steel strand is anchored to one of the second inclined leg support columns of the support unit, and the other end passes sequentially through the first transverse wall between the second inclined leg support column and the pier body, the pier body, and the first transverse wall between the other second inclined leg support column of the support unit and the pier body, and is anchored to the other second inclined leg support column of the support unit.

[0010] In one embodiment, the upper ends of the first and second inclined leg support columns are both fitted with anchors, one end of the first transverse wall attachment is connected to the anchor, and the other end is connected to the pier body, and the end of the steel strand passes through the anchor and is connected to the anchor end provided on the anchor.

[0011] In one embodiment, an embedded part is provided at the connection between the upper part of the pier body and the first transverse auxiliary wall, and the first transverse auxiliary wall is connected to the embedded part on the upper part of the pier body.

[0012] In one embodiment, an embedded part is provided at the connection between the inclined leg wall and the tie beam located at the top of the pier. One end of the inclined leg wall is connected to the embedded part near the center of the tie beam, and the other end is welded to the upper end of the first inclined leg support column.

[0013] In one embodiment, the bottom end of the inclined leg support column group is fixed to the pier cap by embedded parts, and the distance between the inclined leg support column group and the pier body increases sequentially from bottom to top.

[0014] In one embodiment, it further includes: a slide beam for supporting the jacking of the steel beam; a reaction seat disposed on the slide beam, the reaction seat being used to balance the horizontal load generated during the jacking of the steel beam; a distribution beam; the top of the inclined leg support column assembly is provided with a distribution beam for supporting the top slide beam, the distribution beam being fixedly connected to the inclined leg support column assembly through a rigid component, the rigid component including a fixing sleeve and stiffening plates, the fixing sleeve being sleeved on the top of the inclined leg support column assembly, and a plurality of stiffening plates being disposed outside the fixing sleeve and aligned with the web of the distribution beam.

[0015] The beneficial effects of the technical solutions provided in this application include:

[0016] During the jacking process of the steel beam, a steel strand is used for tensioning. One end of the steel strand is anchored to a diagonal support column group of the support unit, and the other end is used to penetrate the pier body and the first transverse wall between the pier body and the diagonal support column group, and anchored to another diagonal support column group. The steel strand is tensioned to the calculated horizontal component force value. When the diagonal support column group is not subjected to the top gravity load, the pier body concrete is in a state of compression, and the pressure is equal to the horizontal component force generated when the diagonal support column group is in use. When the steel beam is jacked to the top of the diagonal support column group, the gravity load will cause the diagonal support column group to be compressed. The horizontal component force generated by the axial force of the diagonal support column group is borne by the prestressed steel strand. At this time, the pressure on the pier body gradually decreases, while the tensile stress of the steel strand remains unchanged. During the process, the pier body concrete is always in a state of compression. This can better utilize the characteristics of concrete to reduce the risk of cracks and damage to the pier body, making the pier-side bracket structure more reasonable and safe. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A front view of the pier-side bracket provided in an embodiment of this application;

[0019] Figure 2 A top view of the pier-side bracket provided in an embodiment of this application;

[0020] Figure 3 This is a side view of the pier bracket provided in an embodiment of this application.

[0021] In the diagram: 1. Inclined leg support column assembly; 110. First inclined leg support column; 120. Second inclined leg support column; 2. First transverse wall attachment; 3. Second transverse wall attachment; 4. First steel strand; 5. Second steel strand; 6. Connecting system; 7. Embedded parts; 8. Foundation; 9. Rigid components; 91. Fixing sleeve; 92. Stiffening plate; 10. Anchor; 101. Anchoring end; 11. Slide beam; 12. Cap beam; 13. Horizontal jack; 14. Sliding block; 15. Reaction seat; 16. Inclined leg wall attachment; 17. Distribution beam; 18. Tie beam. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0023] This application provides a pier-side bracket, which can solve the technical problem that the pier body may be damaged during the steel beam jacking process in the prior art.

[0024] Figure 1 This is a front view structural diagram of the pier-side bracket provided in an embodiment of this application. Figure 2 This is a top view of the pier-side bracket provided in an embodiment of this application.

[0025] Reference Figure 1 and Figure 2 This application provides a pier-side bracket for supporting the weight of a top steel beam and serving as a platform for pushing the steel beam. It includes: two support units symmetrically arranged at both ends of the pier body, with inclined leg walls 16 between the support units and the pier body. Each support unit includes two symmetrically arranged inclined leg support column groups 1, a first transverse wall 2 connecting the pier body to the upper end of the inclined leg support column group 1, and a second transverse wall 3 connecting the pier body to the middle end of the inclined leg support column group 1; and steel strands connecting the two inclined leg support column groups 1 in the support unit. One end of the steel strand is anchored to one inclined leg support column group 1 in the support unit, and the other end passes through the pier body and the first transverse wall 2 between the pier body and the inclined leg support column group 1, and is anchored to the other inclined leg support column group 1. Prestressing is then applied after completion.

[0026] Specifically, during the jacking process of the steel beam, it is necessary to set up pier-side brackets and sliding beams 11 on both sides of the pier to guide the jacking of the steel beam. In this embodiment, by reserving a channel in the pier body for the steel strand to pass through, the horizontal component force generated by the top load transfer during the jacking process of the steel beam is calculated, and the steel strand is tensioned to the calculated horizontal component force value. The steel strand forms a counter-tension between the inclined leg support column groups 1 to balance the horizontal component force generated by the inclined leg support column groups 1 when bearing the top load, so that the tensile stress that the pier body should be subjected to is converted into compressive stress.

[0027] A steel pipe with a certain load-bearing capacity is used as the first transverse attachment wall 2. The first transverse attachment wall 2 is perpendicular to the pier body to ensure that the prestress on the inclined leg support column group 1 can be transferred to the pier body. The first transverse attachment wall 2 is a pipe-type attachment wall, and the pipe-type attachment wall, the steel strand and the duct through which the steel strand passes are coaxial.

[0028] In this embodiment of the application, the inclined leg support column group 1 includes a first inclined leg support column 110 and a second inclined leg support column 120 arranged in parallel, and a connecting system 6 is provided between the first inclined leg support column 110 and the second inclined leg support column 120 of the inclined leg support column group 1.

[0029] Specifically, the connecting system 6 can be a connecting beam, thereby increasing the overall stiffness of the inclined leg support column assembly 1 and thus improving the structural stability of the inclined leg support column assembly 1.

[0030] Figure 3 This is a side view of the pier-side bracket provided in an embodiment of this application. (Refer to reference...) Figure 1 , Figure 2 and Figure 3 In this embodiment, a first transverse auxiliary wall 2 is provided between the upper end of the first inclined leg support column 110 and the pier body; a second transverse auxiliary wall 3 is provided between the middle end of the first inclined leg support column 110 and the pier body; an inclined leg auxiliary wall 16 is provided between the upper end of the first inclined leg support column 110 and the pier body near the center; and a first transverse auxiliary wall 2 is provided between the upper end of the second inclined leg support column 120 and the pier body, with the first transverse auxiliary wall 2 perpendicular to the pier body. The transverse auxiliary walls can increase the stability of the inclined leg support column assembly under compression, and the inclined leg auxiliary wall 16 can increase the transverse stiffness of the inclined leg support column assembly, making the inclined leg support column assembly more stable during the lateral displacement of the steel beam correction.

[0031] In this embodiment of the application, a first steel strand 4 is connected between the two first inclined leg support columns 110 of the two inclined leg support column group 1 of the support unit, and a second steel strand 5 is connected between the two second inclined leg support columns 120 of the two inclined leg support column group 1 of the support unit.

[0032] Specifically, one end of the first steel strand 4 is anchored to one of the first inclined leg support columns 110 of the support unit, and the other end passes sequentially through the first transverse wall 2 between the first inclined leg support column 110 and the pier body, the pier body, and the first transverse wall 2 between the other first inclined leg support column 110 of the support unit and the pier body, and is anchored to the other first inclined leg support column 110 of the support unit. One end of the second steel strand 5 is anchored to one of the second inclined leg support columns 120 of the support unit, and the other end passes sequentially through the first transverse wall 2 between the second inclined leg support column 120 and the pier body, the pier body, and the first transverse wall 2 between the other second inclined leg support column 120 of the support unit and the pier body, and is anchored to the other second inclined leg support column 120 of the support unit.

[0033] The corresponding inclined leg support columns on both sides of the pier are pulled by a bundle of steel strands. There are a total of 4 bundles for a single pier. After the steel strands are tensioned, they balance the horizontal component of the load generated by the gravity load of the steel beam on the inclined leg support columns.

[0034] Specifically, jacks can be used to tension the steel strands. After tensioning, anti-loosening devices and protective covers can be installed, and the protective covers can be filled with anti-corrosion grease to ensure that the tensioning environment is not disturbed, further ensuring the structural stability of the pier-side bracket. In one specific embodiment, the first steel strand 4 or the second steel strand 5 is a bundle of steel strands, containing 17 strands, with a tension of 1700kN. This is sufficient to balance the horizontal component of the gravity load on the inclined leg support column. In some other embodiments of this application, the number and tension of the steel strands can be set according to actual conditions, and are not limited here.

[0035] In this embodiment, the upper ends of the first inclined leg support column 110 and the second inclined leg support column 120 are both fitted with anchors 10. One end of the first transverse wall attachment 2 is connected to the anchor 10, and the other end is connected to the pier body. The end of the steel strand passes through the anchor 10 and is connected to the anchor end 101 provided on the anchor 10.

[0036] Specifically, the anchor 10 can be a perforated pile cap with a perforation for the steel strand to pass through. The pipe-type wall attachment, the steel strand, and the perforation for the steel strand to pass through are coaxial. At the same time, the end of the anchor 10 facing the first transverse wall attachment 2 is welded to the first transverse wall attachment 2.

[0037] In this embodiment of the application, an embedded part 7 is provided at the connection between the upper part of the pier body and the first transverse wall 2, and the first transverse wall 2 is connected to the embedded part 7 on the upper part of the pier body.

[0038] Specifically, the embedded part 7 is embedded in the concrete structure of the pier body and is fixedly connected to the first transverse wall 2 by bolts exposed in the concrete structure, thereby transferring the external load to the concrete structure of the pier body.

[0039] The tie beam 18 is located at the top of the pier body. The inclined leg wall 16 is located between the upper end of the first inclined leg support column 110 and the tie beam 18. An embedded part 7 is provided at the connection between the inclined leg wall 16 and the tie beam 18. One end of the inclined leg wall 16 is connected to the embedded part 7 near the center of the tie beam 18, and the other end is welded to the upper end of the first inclined leg support column 110. In this embodiment, the bottom end of the inclined leg support column group 1 is fixed to the pier cap 8 by the embedded part 7, and the distance between the inclined leg support column group 1 and the pier body increases sequentially from bottom to top.

[0040] Due to the inclined setting of the inclined leg support column group 1, this application embodiment is applicable to some situations where space is limited, the geological conditions around the pier are poor, and driven piles cannot be used. The method of applying horizontal prestress with steel strands makes the structure of the pier-side bracket more reasonable, while ensuring construction safety.

[0041] In this embodiment, the system further includes: a slide beam 11 for supporting the jacking of the steel beam; a reaction seat 15 disposed on the slide beam 11, the reaction seat 15 being used to balance the horizontal load generated during the jacking of the steel beam; and a distribution beam 17 for supporting the top slide beam 11 disposed at the top of the inclined leg support column assembly 1, the distribution beam 17 being fixedly connected to the inclined leg support column assembly 1 via a rigid component 9, the rigid component 9 including a fixing sleeve 91 and stiffening plates 92, the fixing sleeve 91 being sleeved on the top distribution beam 17 of the inclined leg support column assembly 1, and multiple stiffening plates 92 being disposed outside the fixing sleeve 91 and aligned with the web of the distribution beam 17.

[0042] Meanwhile, the cap beam 12 is located at one end of the pier body away from the main structure's abutment 8, and the slide beam 11 is erected on top of the cap beam 12 and the distribution beam 17. The slide beam 11 is fixedly connected to the cap beam 12 through the pier top embedded part 7.

[0043] During the jacking process, the steel beam rests on top of the slider 14. A horizontal jack 13 pulls the slider 14, generating power for the jacking of the steel beam. The slider 14 also assists in the jacking. Simultaneously, a reaction seat 15 is installed to bear the horizontal reaction force generated by the horizontal jack 13, transferring this force to the slide beam 11. When the steel beam moves at a constant speed, the horizontal reaction force balances the frictional force between the slider 14 and the slide beam 11. However, in the actual jacking process, the steel beam undergoes velocity changes from rest to motion and back to rest. The jacking force and frictional force on the steel beam are not balanced, resulting in a combined force that accelerates the steel beam. The horizontal impact force generated at this time is borne by the embedded parts at the top of the cap beam 12. When the steel beam's own weight presses on the top of the support, the axial force of the inclined leg support column is decomposed into a vertical component that balances with the steel beam's own weight, and a horizontal component that balances with the prestress of the steel strands.

[0044] By setting rigid component 9, the connection between distribution beam 17 and inclined leg support column group 1 can be made more stable, and the distribution beam 17 can be prevented from falling off the pier top when the sliding beam 11 transmits longitudinal bridge load.

[0045] During the jacking process of the steel beam, a steel strand is used for tensioning. One end of the steel strand is anchored to a diagonal support column group of the support unit, and the other end is used to penetrate the pier body and the first transverse wall between the pier body and the diagonal support column group, and anchored to another diagonal support column group. The steel strand is tensioned to the calculated horizontal component force value. When the diagonal support column group is not subjected to the top gravity load, the pier body concrete is in a state of compression, and the pressure is equal to the horizontal component force generated when the diagonal support column group is in use. When the steel beam is jacked to the top of the diagonal support column group, the gravity load will cause the diagonal support column group to be compressed. The horizontal component force generated by the axial force of the diagonal support column group is borne by the prestressed steel strand. At this time, the pressure on the pier body gradually decreases, while the tensile stress of the steel strand remains unchanged. During the process, the pier body concrete is always in a state of compression. This can better utilize the characteristics of concrete to reduce the risk of cracks and damage to the pier body, making the pier-side bracket structure more reasonable and safe.

[0046] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] It should be noted that in this application, 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. Furthermore, 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 a process, method, 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 process, method, article, or apparatus that includes said element.

[0048] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pier-side bracket for supporting the weight of a top steel beam and serving as a platform for jacking the steel beam, characterized in that, include: Two support units are symmetrically arranged at both ends of the pier body. The support units are provided with inclined leg wall (16) between them and the pier body. The support units include two symmetrically arranged inclined leg support column groups (1), a first transverse wall (2) for connecting the pier body and the upper end of the inclined leg support column group (1), and a second transverse wall (3) for connecting the pier body and the middle end of the inclined leg support column group (1). The steel strand used to connect the two inclined leg support column groups (1) in the support unit has one end anchored to one inclined leg support column group (1) of the support unit, and the other end is used to pass through the pier body and the first transverse wall attached (2) between the pier body and the inclined leg support column group (1), and is anchored to the other inclined leg support column group (1).

2. The pier-side bracket according to claim 1, characterized in that: The inclined leg support column group (1) includes a first inclined leg support column (110) and a second inclined leg support column (120) arranged side by side, and a connecting system (6) is provided between the first inclined leg support column (110) and the second inclined leg support column (120) of the inclined leg support column group (1).

3. The pier-side bracket according to claim 2, characterized in that: A first transverse wall (2) is provided between the upper end of the first inclined leg support column (110) and the pier body, a second transverse wall (3) is provided between the middle end of the first inclined leg support column (110) and the pier body, an inclined leg wall (16) is provided between the upper end of the first inclined leg support column (110) and the pier body near the center, and a first transverse wall (2) is provided between the upper end of the second inclined leg support column (120) and the pier body, and the first transverse wall (2) is perpendicular to the pier body.

4. The pier-side bracket according to claim 2, characterized in that: A first steel strand (4) is connected between the two first inclined leg support columns (110) of the two inclined leg support column group (1) of the support unit, and a second steel strand (5) is connected between the two second inclined leg support columns (120) of the two inclined leg support column group (1) of the support unit.

5. The pier-side bracket according to claim 4, characterized in that: One end of the first steel strand (4) is anchored to one of the first inclined leg support columns (110) of the support unit, and the other end passes through the first transverse wall (2) between the first inclined leg support column (110) and the pier body, the pier body, and the first transverse wall (2) between the other first inclined leg support column (110) of the support unit and the pier body in sequence, and is anchored to the other first inclined leg support column (110) of the support unit. One end of the second steel strand (5) is anchored to one of the second inclined leg support columns (120) of the support unit, and the other end passes through the first transverse wall (2) between the second inclined leg support column (120) and the pier body, the pier body, and the first transverse wall (2) between the other second inclined leg support column (120) of the support unit and the pier body in sequence, and is anchored to the other second inclined leg support column (120) of the support unit.

6. The pier-side bracket according to claim 2, characterized in that: Anchors (10) are fitted on the upper ends of the first inclined leg support column (110) and the second inclined leg support column (120). One end of the first transverse wall attachment (2) is connected to the anchor (10), and the other end is connected to the pier body. The end of the steel strand passes through the anchor (10) and is connected to the anchor end (101) provided on the anchor (10).

7. The pier-side bracket according to claim 6, characterized in that: An embedded part (7) is provided at the connection between the upper part of the pier body and the first transverse wall (2), and the first transverse wall (2) is connected to the embedded part (7) on the upper part of the pier body.

8. The pier-side bracket according to claim 6, characterized in that: An embedded part (7) is provided at the connection between the inclined leg wall attachment (16) and the tie beam (18) located at the top of the pier. One end of the inclined leg wall attachment (16) is connected to the embedded part (7) near the center of the tie beam (18), and the other end is welded to the upper end of the first inclined leg support column (110).

9. The pier-side bracket according to claim 1, characterized in that: The bottom end of the inclined leg support column group (1) is fixed to the pier (8) by the embedded part (7), and the distance between the inclined leg support column group (1) and the pier body increases from bottom to top.

10. The pier-side bracket according to claim 1, characterized in that: Also includes: The sliding beam (11) is used to support the jacking of the steel beam; The reaction seat (15) is set on the slide beam (11) and is used to balance the horizontal load generated during the jacking process of the steel beam; The top of the inclined leg support column assembly (1) is provided with a distribution beam (17) for supporting the top slide beam (11). The distribution beam (17) is fixedly connected to the inclined leg support column assembly (1) through a rigid component (9). The rigid component (9) includes a fixing sleeve (91) and a stiffening plate (92). The fixing sleeve (91) is sleeved on the top distribution beam (17) of the inclined leg support column assembly (1). A plurality of stiffening plates (92) are disposed outside the fixing sleeve (91) and aligned with the web of the distribution beam (17).

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