Steel support hanging plate assembly

Abstract

The utility model relates to the technical field of foundation pit supporting in the building industry, in particular to a steel support hanging plate assembly. The steel support hanging plate assembly comprises N U-shaped hanging rings, the front end of each hanging ring tilts upwards, and N is larger than or equal to 1; the hanging plate comprises a hanging section which is in a plate shape and extends in the vertical direction, and N hanging holes are formed in the top of the hanging section; the supporting section is fixed at the bottom end of the hanging section, is plate-shaped and extends along the horizontal direction; wherein the hanging plate is hung on the N hanging rings through the N hanging holes. The steel support hanging plate assembly has the biggest characteristic that the steel support hanging plate assembly can be conveniently mounted and dismounted without the aid of tools, and the L-shaped hanging plate can be repeatedly used, so that the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology in the construction industry, and in particular to a steel support hanging plate assembly. Background Technology

[0002] In foundation pit support, the first layer of steel bracing is typically supported on the capping beam. Currently, the commonly used method in China for connecting the steel bracing to the capping beam is as follows: vertical steel plates are pre-embedded on the side of the capping beam, and these plates are connected to the capping beam via anchor bars. The steel bracing is then welded to these steel plates. Support plates are welded onto the vertical steel plates to prevent the bracing from collapsing.

[0003] In the process of realizing this utility model, the applicant discovered the following defects in the above connection method: ① The disassembly and assembly of the steel support hanging plate requires special tools and personnel, which affects the reuse of the steel support hanging plate; ② Relying solely on the support to prevent the support from falling is not safe; ③ The vertical steel plate bearing the force of the steel support hanging plate needs to be constructed simultaneously with the cap beam and the wall, and cannot be "built later", which affects the renovation of existing bridge structures. Utility Model Content

[0004] I. Technical problems to be solved

[0005] This invention aims to solve at least partially one of the aforementioned technical problems.

[0006] II. Technical Solution

[0007] This utility model provides a steel support hanging plate assembly. The steel support hanging plate assembly includes: N U-shaped hanging rings, each with its front end pointing upwards, where N ≥ 1; a hanging plate, including: a hanging section extending vertically in a plate shape, with N hanging holes at its top; and a support section fixed to the bottom end of the hanging section, extending horizontally in a plate shape; wherein the hanging plate is hung on the N hanging rings through the N hanging holes.

[0008] In some embodiments of this utility model, the U-shaped hanging ring includes: an arc segment at the front end; two rod segments on both sides extending backward from both ends of the arc segment; and welded segments on both sides extending to the left and right respectively from the rear end of the corresponding rod segments; wherein the horizontal projection of the arc segment and the two rod segments forms a U-shape; the front part of the arc segment and / or the two rod segments curves upward, and the curvature angle α is between 20° and 80°.

[0009] In some embodiments of this utility model, the U-shaped hanging ring is made of round steel with a diameter of d; the two welded sections on both sides of the U-shaped hanging ring are respectively welded to the horizontal reinforcing bars of the fixed structure; the welding meets the following requirements: single-sided weld length: in the double-sided welding state, the single-sided weld length is not less than 5d; in the single-sided welding state, the single-sided weld length is not less than 10d; effective weld thickness: not less than 0.35d; effective weld width: not less than 0.8d; wherein, the length of the two welded sections is H3, and H3 is greater than or equal to the single-sided weld length.

[0010] In some embodiments of this utility model, the tilt angle α satisfies: 30°≤α≤45°.

[0011] In some embodiments of this utility model, the following conditions are met: 1≤H1:H2≤2, H1≥60cm, where H1 is the width of the arc segment and H2 is the length of the pole segment.

[0012] In some embodiments of this utility model, the fixed structure is: a cap beam or the side of a diaphragm wall with a steel support.

[0013] In some embodiments of this utility model, the hanging section of the hanging plate is set close to the vertical surface of the fixed structure.

[0014] In some embodiments of this utility model, N = 2; the diameter d of the round steel is a standard size that satisfies the following conditions: Where ρ is the unit weight of the steel support, t is the wall thickness of the steel support, D is the diameter of the steel support, L is the length of the steel support, and q k G is the live load on each linear meter of steel support. k [σ] represents the total weight of the two hanging plates; [σ] represents the allowable stress of the U-shaped hanging ring.

[0015] In some embodiments of this utility model, the hanging plate further includes: two side plates, which are welded to both sides of the hanging plate respectively; wherein each side plate is a right-angled triangle, the first right-angled side of the side plate is welded and fixed to the hanging section; and the second right-angled side is welded and fixed to the support section on the same side.

[0016] In some embodiments of this utility model, the U-shaped hanging ring is made from a single piece of round steel.

[0017] In some embodiments of this utility model, the hanging section and the supporting section of the hanging plate are integrally formed from a single piece of steel plate, and the two side plates are welded to both sides of the hanging plate.

[0018] In some embodiments of this utility model, the thickness of the hanging section, the support section, and the side plate is not less than 20mm.

[0019] In some embodiments of this utility model, the right triangle is an isosceles right triangle with a side length greater than or equal to 250mm.

[0020] In some embodiments of this utility model, the hanging plate is an L-shaped hanging plate or a Z-shaped hanging plate.

[0021] In some embodiments of this utility model, the middle part of the support section of the hanging plate is provided with rubber-material edge anti-slip texture.

[0022] In some embodiments of this utility model, the mounting hole is a flat rectangle, and its height and width correspond to the diameter and width of the round steel of the arc segment, respectively.

[0023] In some embodiments of this utility model, it further includes: a traction cable, the front end of which is sleeved on a steel support; and the rear end of which is fixed to a U-shaped hanging ring.

[0024] III. Beneficial Effects

[0025] As can be seen from the above technical solution, the present invention has at least one of the following beneficial effects compared with the prior art:

[0026] ①The biggest feature of the steel support hanging plate assembly in this utility model is that it can be easily installed and dismantled without the aid of tools. In addition, the L-shaped hanging plate can be reused, which reduces construction costs.

[0027] ② In this utility model, the steel support hanging plate assembly is not only applicable to the first support (straight support, not diagonal support) on the cap beam, but also applicable to each support (straight support, not diagonal support) of the underground continuous wall support structure; there is no need to pre-embed steel plates and anchor bars, and the position of the steel support can be flexibly adjusted later; no rebar installation is required, and the stress is reliable; it greatly reduces on-site construction welding operations; the steel plates can be recycled without the aid of special tools, which has good economic benefits.

[0028] ③ In this utility model, the combination of hanging plate and traction cable solves the problem of insufficient anti-fall measures for steel support, and greatly improves the safety of foundation pit construction.

[0029] ④ In this utility model, the side length of the L-shaped hanging plate is slightly larger than the diameter of the steel support, which takes into account the compatibility with the steel support. In addition, in order to prevent the circular cross-section steel support from rolling inside the L-shaped hanging plate, the middle part of the support section is provided with rubber ridge protrusions.

[0030] ⑤ Solving for the diameter d of the U-shaped hanging ring, we get:

[0031] Based on the above-derived conditions for the diameter of round steel used in U-shaped hanging rings, selecting standard-sized round steel that meets the conditions to manufacture the hanging rings can minimize construction costs while ensuring construction safety. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the steel support hanging plate assembly in the actual installation state according to an embodiment of this utility model.

[0033] Figure 2 and Figure 3 They are respectively Figure 1 The steel support panel assembly shown is in its actual installation state, as shown in the top and right views.

[0034] Figure 4 for Figure 1 The diagram shows the L-shaped hanging plate and U-shaped hanging ring in the steel support hanging plate assembly.

[0035] Figure 5A and Figure 5B for Figure 4 The front and top views of the U-shaped hanging ring are shown.

[0036] Figure 6 This is a flowchart of the steel support construction method according to an embodiment of the present invention. Detailed Implementation

[0037] To address the above issues, this utility model provides a hanging plate assembly that offers flexible construction timing, reduces on-site work, and facilitates recycling and reuse, while also reinforcing measures to prevent support from falling off.

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and with reference to the accompanying drawings.

[0039] The first aspect of this utility model provides a steel support hanging plate assembly. Figure 1 This is a schematic diagram showing the actual installation state of the steel support hanging plate assembly according to an embodiment of this utility model. Figure 2 and Figure 3 They are respectively Figure 1 The steel support panel assembly shown is in its actual installation state, as shown in the top and right views. Figure 4 for Figure 1 The diagram shows the L-shaped hanging plate and U-shaped hanging ring in the steel support hanging plate assembly. Figure 5A and Figure 5B for Figure 4 The front and top views of the U-shaped hanging ring are shown.

[0040] As shown in the figure, the steel support hanging plate assembly in this embodiment includes:

[0041] Two U-shaped hanging rings 10, with the front end of each ring pointing upwards;

[0042] L-shaped mounting plate 20, including:

[0043] The hanging section 21 is plate-shaped and extends vertically, with N hanging holes 24 on its top.

[0044] Support section 22 is fixed to the bottom end of the hanging section and extends horizontally in a plate shape;

[0045] The two side plates 23 are welded to both sides of the L-shaped hanging plate respectively;

[0046] The L-shaped hanging plate is attached to N hanging rings through N hanging holes;

[0047] Two tension cables 30, the tension cables include:

[0048] 31; sleeved on the outside of steel support A;

[0049] The upper pull section 32 has its front end connected to the collar section and its rear end fixed to the arc section.

[0050] The following provides a detailed description of each part of the steel support hanging plate assembly in this embodiment.

[0051] In this embodiment, the hanging section 21 and support section 22 of the L-shaped hanging plate are made from a single piece of steel plate. The U-shaped hanging ring 10 is made from a single piece of Q235B round steel. The use of a single piece of material can improve the mechanical strength of the components and reduce manufacturing costs.

[0052] As shown in the figure, in this embodiment, the dimensions of the L-shaped hanging plate are determined based on the diameter of the steel support A. Let the diameter of the steel support A be D, then the side length of the L-shaped hanging plate is D + 200 (mm). The L-shaped hanging plate has two flat rectangular hanging holes 24, each 165mm × 100mm in size. Their height and width correspond to the diameter and width of the round steel of the arc segment of the U-shaped hanging ring, respectively. That is, the height of the hanging hole is 2–5mm larger than the diameter of the round steel of the U-shaped hanging ring; the width of the hanging hole is 2–5mm larger than the width of the arc segment of the U-shaped hanging ring.

[0053] It should be noted that the side length of the L-shaped hanging plate is slightly larger than the diameter D of the steel support A, which is to take into account the compatibility with the steel support. Furthermore, to prevent the circular cross-section steel support from rolling within the L-shaped hanging plate, the middle of the support section is provided with rubber-material ridged protrusions.

[0054] Please refer to the attached diagram. In the L-shaped hanging panel, the side plates 23 on both sides are welded to the two sides of the L-shaped hanging panel respectively. Each side plate is a right-angled triangle, with the first right-angled side of the side plate welded and fixed to the hanging section, and the second right-angled side welded and fixed to the support section on the same side. The side plates on both sides can prevent the steel support from slipping off the L-shaped hanging panel.

[0055] In this embodiment, the hanging plate is L-shaped, but this utility model is not limited to this. In other embodiments of this utility model, the hanging plate can also be Z-shaped, that is, an overlapping section is horizontally provided above the hanging section of the L-shaped hanging plate in this embodiment, so as to overlap above the crown beam, which can also realize this utility model and is also within the protection scope of this utility model.

[0056] Please refer to Figure 5A and Figure 5B The U-shaped hanging ring includes: an arc segment 11 at the front end; two shaft segments 12 on both sides extending backward from both ends of the arc segment; and two welded segments 13 on both sides extending to the left and right respectively from the rear end of the corresponding shaft segments; wherein the horizontal projection of the arc segment and the two shaft segments forms a U-shape; the front part of the arc segment and / or the two shaft segments curves upward, with a curve angle α of 30°.

[0057] When determining the tilt angle α, the following two factors need to be considered: ① preventing the L-shaped hanging plate from slipping off the U-shaped hanging ring; ② facilitating the hanging and removing of the L-shaped hanging plate. In this embodiment, the upward tilt angle of the arc segment 11 is 30°, in other words, the angle between the arc segment 11 and the rod body segment 12 is 150°. However, this utility model is not limited to this. In other embodiments of this utility model, the tilt angle α can be between 20° and 80°, preferably 30°≤α≤45°. This utility model can be implemented within these ranges and is within the protection scope of this utility model.

[0058] In actual construction, before installing the L-shaped hanging panel, it is necessary to partially break down the existing structure, such as... Figure 2 The concrete cover G1 is applied to the side reinforcement of the capping beam or diaphragm wall (ground wall) as shown in G. Then, the U-shaped hanging ring is welded to the reinforcement. The welding area is as follows: Figure 2 As shown in G2. To ensure connection strength, the welding should meet the following requirements:

[0059] (1) Length of single-sided weld

[0060] In the double-sided welding state, the length of the weld on one side shall not be less than 5d; in the single-sided welding state, the length of the weld on one side shall not be less than 10d. Of course, the length of the welded sections on both sides shall be H3, and H3 shall be greater than or equal to the length of the weld on one side.

[0061] (2) Effective weld thickness: not less than 0.35d;

[0062] (3) Effective welding width: not less than 0.8d;

[0063] In this embodiment, the U-shaped hanging ring is made of Q235B round steel, and according to calculations, the diameter of the round steel is 20mm. The calculation process is as follows:

[0064] (1) Allowable load of U-shaped hanging ring

[0065] Each U-shaped hanging ring can be calculated based on two cross-sections. For Q235B round steel, the stress of the U-shaped hanging ring should not exceed 50 N / mm². 2 .

[0066] The allowable load shared by each U-shaped hanging ring [DK] = 3.14 × d 2 ÷4×[σ]×2.

[0067] (2) Actual load borne by the U-shaped hanging ring

[0068] Based on the stress analysis, the relationship between the diameter d of the U-shaped hanging ring and the parameters of the steel support is derived as follows:

[0069] ① Cross-sectional area of ​​steel support

[0070] The steel support has an annular cross-section, and the cross-sectional area A is calculated as: A = πt(Dt);

[0071] Where t is the wall thickness of the steel support and D is the diameter of the steel support.

[0072] ② Steel support volume

[0073] The volume V is the cross-sectional area multiplied by the length L of the steel support: V = πt(Dt)L.

[0074] ③ Total weight of steel supports

[0075] Considering the unit weight ρ (weight per unit volume) of the steel support, the total weight W k For: W k =ρV=ρπt(Dt)L

[0076] ④ Total weight G of the L-shaped hanging panels on both sides k

[0077] ⑤ Live load Q on steel support k

[0078] Live load q per linear meter of steel support k Q k =q k L

[0079] The load borne by the U-shaped hanging ring:

[0080] There are two U-shaped hanging rings on each side, for a total of four U-shaped hanging rings. Assuming three U-shaped hanging rings are under load, the load P borne by each U-shaped hanging ring is:

[0081]

[0082] ⑥ Relationship between cross-sectional area and stress of U-shaped hanging ring

[0083] Each U-shaped hanging ring has two cross-sectional areas, the cross-sectional area of ​​the U-shaped hanging ring is... Actual stress σ: [σ] is the allowable stress of the U-shaped hanging ring.

[0084]

[0085] ⑦ Solve for the diameter d of the U-shaped hanging ring.

[0086] Summarized as follows:

[0087]

[0088] Where ρ is the unit weight of the steel support, t is the wall thickness of the steel support, D is the diameter of the steel support, L is the length of the steel support, and q k G is the live load on each linear meter of steel support. k [σ] represents the total weight of the two hanging plates; [σ] represents the allowable stress of the U-shaped hanging ring.

[0089] Based on the above-derived conditions for the diameter of round steel used in U-shaped hanging rings, selecting standard-sized round steel that meets the conditions to manufacture the hanging rings can minimize construction costs while ensuring construction safety.

[0090] Furthermore, for U-shaped hanging rings, the following conditions must be met: 1≤H1:H2≤2, H1≥60cm, where H1 is the width of the arc segment and H2 is the length of the pole segment. Simulation tests have proven that such proportions and dimensions can achieve reliable load-bearing capacity for L-shaped hanging plates.

[0091] In this specific embodiment, the design process of the U-shaped hanging ring is as follows:

[0092] Currently, commonly used steel support models in China include: D800 (t=16mm), D609 (t=16mm), D609 (t=14mm), and D426 (t=14mm). Typically, when the foundation pit width exceeds 23m, a central support column is required. Considering the worst-case scenario, assuming a foundation pit width of 23m, and using the D800 (t=16mm) steel support model...

[0093] The weight of each linear meter of steel support is 3.09 kN / m, and the live load on each linear meter of steel support is 0.5 kN / m.

[0094] Meanwhile, the U-shaped hanging rings on both sides of the foundation pit bear the weight of the L-shaped hanging plate, which is (1×1×0.02 / 2+0.25×0.25×0.02)×78.5=0.89KN.

[0095] The standard value of the total load borne by the U-shaped hanging ring: Fk=(3.09+0.5)×23+0.89=83.46KN;

[0096] Two U-shaped hanging rings are installed on each side of the foundation pit, for a total of four U-shaped hanging rings. The stress is considered based on three U-shaped hanging rings.

[0097] The load shared by each U-shaped hanging ring is DK = 83.46 ÷ (4-1) = 27.82 KN.

[0098] (3) Permissible load ≥ Actual load

[0099] Each U-shaped hanging ring is allowed to share a load [DK] ≥ DK, i.e., 3.14 × d 2 ÷4×50×2≥27.82×1000, d≥18.8mm.

[0100] (4) Calculate according to the derived formula

[0101]

[0102] The actual calculated diameter matches the diameter calculated using the derived formula. The actual diameter of the U-shaped hanging ring is taken as d = 20mm, and the U-shaped hanging ring meets the load-bearing capacity requirements when the steel support falls.

[0103] Please refer to the attached diagram. The steel support hanging plate assembly includes two tension cables 30. Each tension cable 30 includes: a loop section 31, fitted onto the outside of the steel support; an upper pull section 32, its front end connected to the loop section and its rear end fixed to the curved section; and a sleeve (not shown in the diagram), fitted onto the outside of the connection between the loop section and the upper pull section of the tension cable. This arrangement creates a "bottom-supporting, top-suspending" anti-fall effect for the steel support, further enhancing its safety.

[0104] In this embodiment, the traction cable is a steel wire rope. Furthermore, the loop section 31 and the upper pull section 32 are made using an integral molding and braiding process. The connection between the two is wrapped with a sleeve, which is filled with lubricating oil to prevent breakage at the connection and ensure the strength of the steel wire rope.

[0105] In this embodiment, two pull cables are provided, each fixed to the arc segment of one of the two U-shaped hanging rings. However, this invention is not limited to this. In other embodiments of this invention, the number of pull cables can be one, three, four, or more. Furthermore, the number of pull cables does not necessarily have to be the same as the number of U-shaped hanging rings.

[0106] Based on the steel support hanging plate assembly of the above embodiments, the second aspect of this utility model also provides a steel support construction method. Figure 6 This is a flowchart of the steel support construction method according to an embodiment of the present invention. As shown in the figure, the steel support construction method of this embodiment includes:

[0107] Step A: Weld two U-shaped hanging rings onto the reinforcing bars on both sides of the fixed structure;

[0108] Step B: Attach the L-shaped hanging plates on both sides to the corresponding two U-shaped hanging rings through the hanging holes;

[0109] Step C: The steel support passes through the corresponding tension cable loops on both sides and is erected between the L-shaped hanging plates on both sides.

[0110] Step D: Tighten and fix the rear ends of the upper sections of the two pull cables onto the arc segment.

[0111] Regarding fixed structures, these can be capping beams or diaphragm walls. Furthermore, fixed structures can be existing fixed structures or newly constructed structures, wherein:

[0112] (1) Existing fixed structures

[0113] When constructing a steel support frame on an existing fixed structure, step A includes: partially removing the concrete protective layer of the fixed structure to expose the reinforcing steel, and welding the two sides of the N U-shaped hanging rings to the reinforcing steel.

[0114] (2) New fixed structures

[0115] When constructing a steel support frame on a newly built fixed structure, step A includes: pre-welding N U-shaped hanging rings onto the reinforcing bars of the newly built fixed structure; laying a concrete protective layer on the reinforcing bars to ensure that the N U-shaped hanging rings extend beyond the concrete protective layer and forward.

[0116] The most significant feature of the steel support hanging plate assembly in this embodiment is its convenient installation and removal without the aid of tools, and the L-shaped hanging plate can be reused. When it is necessary to remove the steel support, step D is followed by:

[0117] Step E: Disconnect the tension cables on both sides of the curved section and remove the steel supports from the L-shaped hanging plates on both sides.

[0118] Step F: Keep the N U-shaped hanging rings on both sides fixed to the steel bars, and remove the L-shaped hanging plate from the two hanging rings.

[0119] As explained above, the steel support hanging plate assembly of this embodiment is suitable not only for the first support (straight, not diagonal) on the capping beam, but also for each support (straight, not diagonal) in a diaphragm wall retaining structure; it eliminates the need for pre-embedded steel plates and anchor bars, allowing for flexible adjustment of the steel support position later; it eliminates the need for rebar installation, ensuring reliable stress distribution; it significantly reduces on-site welding work; and the steel plates can be recycled without special tools, resulting in good economic benefits. Furthermore, the combination of the hanging plate and the tie cable solves the problem of insufficient anti-fall measures for steel supports, greatly improving the safety of foundation pit construction.

[0120] This concludes the description of all embodiments of this utility model. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0121] For certain implementation methods, if they are not key contents of this utility model and are well known to those skilled in the art, they are not described in detail in the accompanying drawings or text due to space limitations. In such cases, they can be understood by referring to relevant prior art.

[0122] It should be noted that, unless explicitly stated otherwise, the numerical parameters in the specification and claims of this utility model may be approximate values ​​and can be changed according to the content of this utility model. Specifically, all figures in the specification and claims indicating the content of composition, reaction conditions, etc., should be understood to be modified by the term "about" in all cases, which means that they include a specific quantity varying by ±10% in some embodiments.

[0123] It should also be noted that the directional terms mentioned in the embodiments, such as "center," "lateral," "longitudinal," "top," "bottom," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship only based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present 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 present invention. Furthermore, throughout the accompanying drawings, the same elements are represented by the same or similar reference numerals. Also, the shapes and dimensions of the components in the drawings do not reflect actual size and proportion, but only illustrate the content of the embodiments of the present invention.

[0124] Those skilled in the art will understand that in the claims and description of this utility model, the word "comprising" does not exclude the presence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the presence of a plurality of such elements (or steps).

[0125] Furthermore, the purpose of providing the above embodiments is merely to enable the present invention to meet legal requirements, and the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

[0126] Similarly, it should be understood that, for the sake of brevity, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this approach should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, each aspect of the invention comprises fewer than all the features of the preceding single embodiment. Furthermore, embodiments may be used in combination with each other or with other embodiments based on design and reliability considerations; that is, technical features from different embodiments can be freely combined to form more embodiments. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the present invention.

[0127] The above specific embodiments have provided a detailed description of the purpose, technical means, and beneficial effects of this utility model. It should be understood that the purpose of the detailed description is to enable those skilled in the art to understand this utility model more clearly, and it is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel support lagging assembly characterised in that, include: There are N U-shaped hanging loops, with the front end of each loop pointing upwards, and N≥1; Mounting panels, including: The hanging section is plate-shaped and extends vertically, with N hanging holes at its top; The support section, fixed to the bottom end of the hanging section, extends horizontally in a plate-like shape; The hanging plate is attached to the N U-shaped hanging rings through the N hanging holes.

2. The steel support sheathing assembly of claim 1, wherein, The U-shaped hanging ring includes: The curved segment at the front; The pole sections on both sides extend backward from both ends of the arc segment; The welded sections on both sides extend from the rear end of the corresponding shaft sections toward the left and right sides, respectively; The horizontal projection of the arc segment and the two shaft segments forms a U-shape; the front of the arc segment and / or the two shaft segments curves upward, with the curvature angle α between 20° and 80°.

3. The steel support hanging plate assembly according to claim 2, characterized in that, The U-shaped hanging ring is made of round steel with a diameter of d; The two welded sections of the U-shaped hanging ring are respectively welded to the horizontal reinforcing bars of the fixed structure; the welding satisfies: Length of weld on one side: In double-sided welding, the length of weld on one side shall not be less than 5d; in single-sided welding, the length of weld on one side shall not be less than 10d. Effective weld thickness: not less than 0.35d; Effective welding width: not less than 0.8d; The length of the welded sections on both sides is H3, and H3 is greater than or equal to the length of the weld on one side.

4. The steel support hanging plate assembly according to claim 3, characterized in that, The tilt angle α satisfies: 30°≤α≤45°; And / or, satisfying: 1≤H1:H2≤2, H1≥60cm, where H1 is the width of the arc segment and H2 is the length of the pole segment; And / or, the fixed structure is: a cap beam with steel support or the side of a diaphragm wall; And / or, the mounting section of the mounting plate is set close to the vertical surface of the fixed structure.

5. The steel support sheathing assembly of claim 3, wherein, N=2； The diameter d of the round steel bar is a standard dimension that meets the following conditions: ； Where ρ is the unit weight of the steel support, t is the wall thickness of the steel support, D is the diameter of the steel support, and L is the length of the steel support. The live load on each meter of steel support. [σ] represents the total weight of the two hanging plates; [σ] represents the allowable stress of the U-shaped hanging ring.

6. The steel support sheathing assembly of claim 1, wherein, The mounting plate also includes: The two side plates are welded to both sides of the mounting plate, respectively; Each side plate is a right-angled triangle, with the first right-angled side of the side plate welded and fixed to the hanging section; the second right-angled side is welded and fixed to the support section on the same side.

7. The steel support hanging plate assembly according to claim 6, characterized in that, The U-shaped hanging ring is made from a single piece of round steel. And / or, the hanging section and support section of the hanging plate are made of a single piece of steel plate, and the side plates of the two pieces are welded to both sides of the hanging plate. And / or, the thickness of the hook section, support section, and side plate is not less than 20mm; And / or, the right triangle is an isosceles right triangle with a leg length greater than or equal to 250 mm.

8. The steel support hanging plate assembly according to any one of claims 1 to 7, characterized in that, The mounting plate is either an L-shaped mounting plate or a Z-shaped mounting plate; And / or, the middle part of the support section of the hanging plate is provided with rubber anti-slip textured edges; And / or, the mounting hole is a flat rectangle, the height and width of which correspond to the diameter and width of the round steel of the arc segment, respectively; And / or, also includes: a tension cable, the front end of which is fitted onto a steel support; Its rear end is fixed to a U-shaped hanging ring.

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