Hanging plate assembly of steel support and construction method

Abstract

The invention relates to the technical field of foundation pit supporting in the building industry, in particular to a hanging plate assembly of a steel support and a construction method. 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 L-shaped 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 L-shaped hanging plate is hung on the N hanging rings through the N hanging holes; m is larger than or equal to 1, and each traction cable comprises a lantern ring section and a pull rope section, the outer side of the steel support is sleeved with the sleeve; the front end of the pull-up section is connected to the lantern ring section, and the rear end of the pull-up section is fixed to the U-shaped hanging ring. According to the device, through combination of the hanging plate and the traction cable, the problem that measures for preventing the steel support from falling are insufficient is solved, and the safety of foundation pit construction is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support in the construction industry, and particularly to a hanging plate assembly of a steel support and a construction method. Background Art

[0002] In foundation pit support, the first steel support is generally supported on the capping beam. At present, the common connection method between the steel support and the capping beam in China is as follows: vertically buried steel plates are pre-buried on the side surface of the capping beam in advance, and the steel plates are connected to the capping beam through anchor bars. The steel support is connected to the steel plates by welding. A support steel plate is welded on the vertical steel plate to prevent the support from falling.

[0003] In the process of implementing the present invention, the applicant found that the above connection method has the following defects: ① Special tools and personnel are required for the disassembly and assembly of the steel support hanging plate, which affects the reuse of the steel support hanging plate; ② Relying solely on the support to prevent the support from falling, the safety performance is poor; ③ The vertical steel plate bearing the force of the steel support hanging plate needs to be constructed synchronously with the capping beam and the wall surface, and cannot be "constructed later", which affects the renovation of existing bridge buildings. Summary of the Invention

[0004] I. Technical Problems to be Solved

[0005] The present invention is expected to solve at least one of the above technical problems.

[0006] II. Technical Solutions

[0007] The first aspect of the present invention provides a hanging plate assembly of a steel support. The hanging plate assembly of the steel support includes:

[0008] N U-shaped hanging rings, the front end of each hanging ring tilts upward, N≥1;

[0009] An L-shaped hanging plate, including:

[0010] A hanging section, which is plate-shaped and extends vertically, and N hanging holes are opened at the top thereof;

[0011] A support section, fixed to the bottom end of the hanging section, and extends horizontally in a plate shape;

[0012] Wherein, the L-shaped hanging plate is hung on the N hanging rings through the N hanging holes;

[0013] M pulling cables, M≥1, and the pulling cable includes:

[0014] A sleeve section; sleeved on the outside of the steel support;

[0015] An upward pulling section, the front end of which is connected to the sleeve section and the rear end is fixed to the U-shaped hanging ring.

[0016] In some embodiments of the present invention, the pulling rope is a steel wire rope; the loop section and the upper pull section are made by an integrated molding braiding process.

[0017] In some embodiments of the present invention, M=N, the loop sections of the M pulling cables are all sleeved on the outside of the same steel support, and the rear ends of the upper pull sections of the M pulling cables are respectively fixed to the arc segments of the corresponding U-shaped hanging rings.

[0018] In some embodiments of the present invention, the pulling rope further includes: a sleeve member, which is sleeved on the outer side of the connection between the ring section and the upper pull section of the pulling rope; wherein the sleeve member is filled with lubricating oil.

[0019] In some embodiments of the present invention, the U-shaped hanging ring includes: an arc segment at the front end; shaft segments on both sides, extending backward from the two ends of the arc segment; welding segments on both sides, extending from the rear ends of the corresponding shaft segments toward the left and right sides respectively; wherein the horizontal plane projection of the arc segment and the two shaft segments is U-shaped; the front parts of the arc segment and / or the two shaft segments are tilted upward, and the tilting angle α is between 20° and 80°.

[0020] In some embodiments of the present invention, the U-shaped hanging ring is made of round steel, and the diameter of the round steel is d; the welding sections on both sides of the U-shaped hanging ring are respectively welded to the horizontal steel bars of the fixed structure; the welding satisfies: the length of the single-side weld: in the double-sided welding state, the length of the single-side weld is not less than 5d; in the single-sided welding state, the length of the single-side weld is not less than 10d; the effective thickness of the weld: not less than 0.35d; the effective width of the weld: not less than 0.8d; wherein the lengths of the welding sections on both sides are H 3 , H 3 Greater than or equal to the single-side weld length.

[0021] In some embodiments of the present invention, the tilting angle α satisfies: 30°≤α≤45°.

[0022] In some embodiments of the present invention, it satisfies: 1≤H 1 :H 2 ≤2, H1≥60cm, where H 1 is the width of the arc segment, H 2 is the length of the shaft section.

[0023] In some embodiments of the present invention, the fixed structure is: a crown beam for mounting steel support or a side surface of an underground continuous wall.

[0024] In some embodiments of the present invention, the hanging section of the L-shaped hanging plate is arranged close to the vertical surface of the fixed structure.

[0025] In some embodiments of the present invention, N=2; the diameter d of the round steel is a standard size that satisfies the following conditions: Wherein, 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, q k is the live load per linear meter of the steel support, and G k is the total weight of the two L-shaped hanging plates on both sides; [σ] is the allowable stress of the U-shaped hanging ring.

[0026] In some embodiments of the present invention, the hanging hole is rectangular, and its height and width respectively correspond to the diameter and width of the round steel of the arc segment.

[0027] In some embodiments of the present invention, a rubber corner convex pattern is provided in the middle of the support section of the L-shaped hanging plate.

[0028] In some embodiments of the present invention, the U-shaped hanging ring is integrally formed from a whole round steel.

[0029] In some embodiments of the present invention, the hanging section and the support section of the hanging plate are integrally formed from a whole steel plate.

[0030] In some embodiments of the present invention, the L-shaped hanging plate further includes: two side plates, which are respectively welded to both sides of the L-shaped hanging plate; wherein, each side plate is a right triangle, the first right-angled side of the side plate is welded and fixed to the hanging section; the second right-angled side is welded and fixed to the support section on the same side.

[0031] The second aspect of the present invention provides a construction method for a steel support. This construction method for a steel support utilizes two sets of steel support hanging plate assemblies as described above, including:

[0032] Step A, on the fixed structures on both sides, weld N U-shaped hanging rings to the steel bars respectively;

[0033] Step B, respectively hang the L-shaped hanging plates on both sides on the corresponding N U-shaped hanging rings through the hanging holes;

[0034] Step C, both sides of the steel support respectively pass through the loop sections of the corresponding pulling cables and are erected between the L-shaped hanging plates on both sides;

[0035] Step D, tighten the rear ends of the upper pulling sections of the pulling cables on both sides and fix them on the arc segments.

[0036] In some embodiments of the present invention, the fixed structure is a capping beam or a diaphragm wall; wherein:

[0037] (1) When carrying out the construction of steel support erection on the original fixed structure, Step A includes: locally removing the concrete protective layer of the fixed structure until the steel bars are exposed, and welding the welding sections on both sides of the N U-shaped hanging rings to the steel bars;

[0038] (2) When constructing the steel support erection on a newly built fixed structure, step A includes: pre-welding N U-shaped hanging rings on the steel bars of the newly built fixed structure; laying a concrete protective layer on the steel bars to ensure that the N U-shaped hanging rings protrude from the concrete protective layer and extend forward.

[0039] In some embodiments of the present invention, when the steel support needs to be removed, after step D, it further includes: step E, disassembling the pulling cables on both sides of the arc segments, and removing the steel support from the L-shaped hanging plates on both sides; step F, retaining the N U-shaped hanging rings on both sides fixed to the steel bars, and removing the L-shaped hanging plates from the N hanging rings.

[0040] III. Beneficial Effects

[0041] As can be seen from the above technical solutions, the present invention has at least one of the following beneficial effects compared with the prior art:

[0042] ① In the present invention, by combining the hanging plates and the pulling cables, the problem of insufficient measures to prevent the steel support from falling is solved, and the safety of foundation pit construction is greatly improved.

[0043] ② In the present invention, the biggest feature of the steel support hanging plate assembly is that it can be conveniently installed and removed without the aid of tools, and moreover, the L-shaped hanging plates can be reused, reducing the construction cost.

[0044] ③ In the present invention, the steel support hanging plate assembly is not only applicable to the first support (straight support, not inclined support) supported on the capping beam, but also applicable to each support (straight support, not inclined support) of the diaphragm wall as the retaining structure; there is no need to pre-embed steel plates and anchor bars in advance, and the position of the steel support can be adjusted flexibly later; there is no need for post-inserted bars, and the force is reliable; the on-site construction welding operation is greatly reduced; the steel plates can be recycled without the aid of special tools, having good economic benefits.

[0045] ④ In the present invention, the side length of the L-shaped hanging plate is slightly larger than the diameter of the steel support, which is considered for the compatibility with the steel support. And in order to prevent the circular-section steel support from rolling inside the L-shaped hanging plate, a rubber material angular protrusion pattern is provided in the middle of the support section.

[0046] ⑤ Solving for the diameter d of the U-shaped hanging ring, we get:

[0047] Based on the above-derived conditions for the diameter of the round steel used for the U-shaped hanging ring, selecting standard-size round steel that meets the conditions to make the hanging rings can reduce the construction cost as much as possible while ensuring the construction safety. Description of the Drawings

[0048] Figure 1 It is a schematic diagram of the actual installation state of the steel support hanging plate assembly in the embodiment of the present invention.

[0049] Figure 2 and Figure 3 respectively are Figure 1 the top view and the right view of the steel support hanger plate assembly shown in the actual installation state.

[0050] Figure 4 is Figure 1 the schematic diagram of the L-shaped hanger plate and the U-shaped hanging ring in the steel support hanger plate assembly shown.

[0051] Figure 5A and Figure 5B is Figure 4 the front view and the top view of the U-shaped hanging ring shown.

[0052] Figure 6 This is the flow chart of the steel support construction method of the embodiment of the present invention. Specific embodiments

[0053] In order to solve the above problems, the present invention provides a hanger plate assembly with flexible construction timing, reduced on-site operation volume, convenient recycling and reuse, and at the same time strengthens the measures to prevent the support from falling.

[0054] To make the purpose, technical solution and advantages of the present invention clearer and more understandable, the following further details the present invention in combination with specific embodiments and with reference to the accompanying drawings.

[0055] The first aspect of the present invention provides a steel support hanger plate assembly. Figure 1 This is the schematic diagram of the steel support hanger plate assembly in the actual installation state of the embodiment of the present invention. Figure 2 and Figure 3 respectively are Figure 1 the top view and the right view of the steel support hanger plate assembly shown in the actual installation state. Figure 4 is Figure 1 the schematic diagram of the L-shaped hanger plate and the U-shaped hanging ring in the steel support hanger plate assembly shown. Figure 5A and Figure 5B is Figure 4 the front view and the top view of the U-shaped hanging ring shown.

[0056] As shown in the figure, the steel support hanger plate assembly of this embodiment includes:

[0057] Two U-shaped hanging rings 10, with the front end of each hanging ring tilted upward;

[0058] The L-shaped hanger plate 20, including:

[0059] The hanging section 21, in the shape of a plate and extending vertically, with N hanging holes 24 opened at its top;

[0060] The support section 22, fixed to the bottom end of the hanging section, in the shape of a plate and extending horizontally;

[0061] Two side plates 23 are respectively welded to both sides of the L-shaped hanging plate;

[0062] Among them, the L-shaped hanging plate is hung on N hanging rings through N hanging holes;

[0063] Two pulling cables 30, the pulling cable includes:

[0064] A ferrule section 31; sleeved on the outside of the steel support A;

[0065] An upward pulling section 32, its front end is connected to the ferrule section, and the rear end is fixed to the arc section.

[0066] The following will separately elaborate on each part of the steel support hanging plate assembly of this embodiment in detail.

[0067] In this embodiment, the hanging section 21 and the support section 22 of the L-shaped hanging plate are integrally formed by a whole piece of steel plate. The U-shaped hanging ring 10 is integrally formed by a whole piece of Q235B round steel. The production of the whole piece (whole block) of material can improve the mechanical strength of the component and reduce the production cost.

[0068] As shown in the figure, in this embodiment, the size of the L-shaped hanging plate is determined according to the diameter of the steel support A. Let the diameter of the steel support A be D, then the side length dimension of the L-shaped hanging plate is D + 200 (mm). Two flat rectangular hanging holes 24 with dimensions of 165mm×100mm are opened on the L-shaped hanging plate, and its height and width respectively correspond to the round steel diameter and width of the arc section of the U-shaped hanging ring, that is, the height of the hanging hole is 2 - 5mm larger than the round steel diameter of the U-shaped hanging ring; the width of the hanging hole is 2 - 5mm larger than the width of the arc section of the U-shaped hanging ring.

[0069] 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 considered for the compatibility of the steel support. And in order to prevent the circular cross-section steel support from rolling inside the L-shaped hanging plate, a rubber material angular convex pattern is provided in the middle of the support section.

[0070] Please refer to the attached drawings. In the L-shaped hanging plate, the two side plates 23 on both sides are respectively welded to both sides of the L-shaped hanging plate; among them, each side plate is a right triangle, the first right side of the side plate is welded and fixed to the hanging section; the second right side is welded and fixed to the support section on the same side. Through the two side plates on both sides, the steel support can be prevented from slipping off the L-shaped hanging plate.

[0071] In this embodiment, the hanging plate is L-shaped, but the present invention is not limited thereto. In other embodiments of the present invention, the hanging plate can also be Z-shaped, that is, a lapping section is horizontally provided above the hanging section of the L-shaped hanging plate in this embodiment, so as to lap above the capping beam, and the present invention can also be realized, and it is also within the protection scope of the present invention.

[0072] Please refer to Figure 5A and Figure 5BThe U-shaped hanging ring includes: an arc segment 11 at the front end; shaft segments 12 on both sides, extending backward from the two ends of the arc segment; welding segments 13 on both sides, extending toward the left and right sides from the rear ends of the corresponding shaft segments respectively; wherein the horizontal plane projection of the arc segment and the two shaft segments is U-shaped; the front parts of the arc segment and / or the two shaft segments are tilted upward, and the tilting angle α is 30°.

[0073] When determining the tilting angle α, the following two factors need to be taken into consideration: 1. Prevent the L-shaped hanging plate from slipping off the U-shaped hanging ring; 2. Facilitate the hanging and removing operations of the L-shaped hanging plate. In this embodiment, the upward tilting angle of the arc segment 11 is 30°. In other words, the angle between the arc segment 11 and the shaft segment 12 is 150°. However, the present invention is not limited to this. In other embodiments of the present invention, the tilting angle α may be between 20° and 80°, preferably, 30°≤α≤45°. Within these ranges, the present invention can be implemented and are within the scope of protection of the present invention.

[0074] In actual construction, before installing the L-shaped hanging board, it is necessary to partially break the Figure 2 The concrete protective layer G1 of the side reinforcement of the cap beam or underground continuous wall (ground-connected wall) shown in G, and then the U-shaped hanging ring is welded to the reinforcement. The welding area is as follows Figure 2 As shown in G2. In order to ensure the connection strength, welding should meet the following requirements:

[0075] (1) Single-side weld length

[0076] In the double-sided welding state, the length of the single-side weld is not less than 5d; in the single-sided welding state, the length of the single-side weld is not less than 10d. Of course, the length of the welding section on both sides is H3, which is greater than or equal to the length of the single-side weld.

[0077] (2) Effective thickness of weld: not less than 0.35d;

[0078] (3) Effective welding width: not less than 0.8d;

[0079] In this embodiment, the U-shaped hanging ring is made of Q235B round steel. According to calculation, the diameter of the round steel is 20 mm.

[0080] The calculation process is as follows:

[0081] (1) Allowable load of U-shaped hanging ring

[0082] Each U-shaped hanging ring can be calculated as two sections. For Q235B round steel, the stress of the U-shaped hanging ring should not be greater than 50N / mm 2 .

[0083] The load allowed to be shared by each U-shaped hanging ring [DK] = 3.14 × d 2 ÷4×[σ]×2.

[0084] (2) Actual bearing load of U-shaped hanging ring

[0085] According to the force analysis, the relationship between the diameter d of the U-shaped hanging ring and the steel support parameters is derived as follows:

[0086] ① Cross-sectional area of steel support

[0087] The steel support has an annular cross-section, and the cross-sectional area A is calculated as: A = πt(D - t);

[0088] where t is the wall thickness of the steel support and D is the diameter of the steel support.

[0089] ② Volume of steel support

[0090] The volume V is the cross-sectional area multiplied by the length L of the steel support: V = πt(D - t)L.

[0091] ③ Total weight of steel support

[0092] Considering the unit weight ρ (weight per unit volume) of the steel support, the total weight W k is: W k = ρV = ρπt(D - t)L

[0093] ④ Total weight G of two L-shaped hanging plates on both sides k

[0094] ⑤ Live load Q on the steel support k

[0095] Live load q per linear meter of steel support k , Q k = q k L

[0096] Load borne by the U-shaped hanging ring:

[0097] There are two U-shaped hanging rings on each side, a total of four U-shaped hanging rings. Assuming three U-shaped hanging rings are stressed, the load P shared by each U-shaped hanging ring is:

[0098]

[0099] ⑥ Relationship between cross-sectional area and stress of U-shaped hanging ring

[0100] Each U-shaped hanging ring has two cross-sectional areas. The cross-sectional area of the U-shaped hanging ring Actual stress σ: [σ] is the allowable stress of the U-shaped hanging ring:

[0101]

[0102] ⑦ Solving for the diameter d of the U-shaped hanging ring

[0103] After sorting out:

[0104]

[0105] Among them, 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 is the live load per linear meter of the steel support, and G k is the total weight of the side hanging plates; [σ] is the allowable stress of the U-shaped hanging ring.

[0106] Based on the above-derived condition of the diameter of the round steel used for the U-shaped hanging ring, standard-size round steel that meets the conditions is selected to make the hanging ring, which can reduce the construction cost as much as possible on the premise of ensuring construction safety.

[0107] In addition, for the U-shaped hanging ring, it is also necessary to satisfy: 1 ≤ H1:H2 ≤ 2, H1 ≥ 60 cm, where H1 is the width of the arc segment and H2 is the length of the rod body segment. Simulation tests have proved that such a ratio and size can achieve reliable load-bearing of the L-shaped hanging plate.

[0108] Specifically in this embodiment, the design process of the U-shaped hanging ring is as follows:

[0109] The commonly used steel support models in China at present are: D800 (t = 16 mm), D609 (t = 16 mm), D609 (t = 14 mm), D426 (t = 14 mm), etc. Usually, when the foundation pit width is greater than 23 m, it is necessary to add middle columns. Considering the most unfavorable situation, assume that the foundation pit width is 23 m and the steel support model is D800 (t = 16 mm).

[0110] The weight of each linear meter of the steel support is 3.09 KN / m, and the live load on each linear meter of the steel support is 0.5 KN / m.

[0111] At the same time, the U-shaped hanging rings on both sides of the foundation pit bear the weight of the L-shaped hanging plates, that is, (1×1×0.02 / 2 + 0.25×0.25×0.02)×78.5 = 0.89 KN.

[0112] The standard value of the total load borne by the U-shaped hanging ring: Fk = (3.09 + 0.5)×23 + 0.89 = 83.46 KN;

[0113] Two U-shaped hanging rings are set on each side of the foundation pit, for a total of four U-shaped hanging rings, and the force is considered according to three U-shaped hanging rings;

[0114] The load DK shared by each U-shaped hanging ring = 83.46÷(4 - 1) = 27.82 KN.

[0115] (3) Allowable load-bearing ≥ Actual load-bearing

[0116] The load that each U-shaped hanging ring can share [DK] ≥ DK, that is, 3.14×d 2 ÷4×50×2 ≥ 27.82×1000, d ≥ 18.8 mm.

[0117] (4) Calculate according to the derivation formula

[0118]

[0119] The diameter obtained from the actual calculation is consistent with that calculated according to the derivation formula. The diameter d of the U-shaped hanging ring is actually taken as 20 mm, and the U-shaped hanging ring meets the requirements for the bearing capacity during the fall of the steel support.

[0120] Please refer to the attached drawings. The steel support hanging plate assembly includes: two pulling cables 30. The pulling cable 30 includes: a ferrule section 31; sleeved on the outside of the steel support; an upper pulling section 32, the front end of which is connected to the ferrule section and the rear end is fixed to the arc section; a sleeve member (not shown in the figure), sleeved on the outside of the connection between the ferrule section and the upper pulling section of the pulling cable. By setting it like this, an anti-fall effect of "supporting from below and hanging from above" is formed for the steel support, further improving the safety of the steel support.

[0121] In this embodiment, the pulling cable is a steel wire rope. Moreover, the ferrule section 31 and the upper pulling section 32 are made by an integrally formed braiding process, and the outside of the connection between the two is wrapped with a sleeve member, and the sleeve member is filled with lubricating oil, which can prevent the connection from breaking and ensure the strength of the steel wire rope.

[0122] In this embodiment, two pulling cables are provided and are respectively fixed on the arc sections of two U-shaped hanging rings. However, the present invention is not limited thereto. In other embodiments of the present invention, the number of pulling cables can also be 1 or 3, 4 or more. At the same time, the number of pulling cables does not have to be the same as the number of U-shaped hanging rings.

[0123] Based on the steel support hanging plate assembly of the above embodiment, the second aspect of the present invention also provides a steel support construction method. Figure 6 This is a flowchart of the steel support construction method of the embodiment of the present invention. As shown in the figure, the steel support construction method of this embodiment includes:

[0124] Step A, on the two-side fixed structures, weld 2 U-shaped hanging rings on the steel bars respectively;

[0125] Step B, respectively hang the two-side L-shaped hanging plates on the corresponding 2 U-shaped hanging rings through the hanging holes;

[0126] Step C, the two sides of the steel support respectively pass through the ferrule sections of the corresponding pulling cables and are erected between the two-side L-shaped hanging plates;

[0127] Step D, tighten the rear ends of the upper pulling sections of the two-side pulling cables and fix them on the arc sections.

[0128] Regarding the fixed structure, it can be a capping beam or a diaphragm wall. And the fixed structure can be an existing fixed structure or a newly constructed structure, where:

[0129] (1) Existing fixed structure

[0130] When constructing the steel support on the existing fixed structure, step A includes: locally removing the concrete protective layer of the fixed structure to expose the steel bars, and welding the two welding sections of N U-shaped hanging rings to the steel bars.

[0131] (2) Newly constructed fixed structure

[0132] When constructing the steel support on the newly constructed fixed structure, step A includes: pre-welding N U-shaped hanging rings on the steel bars of the newly constructed fixed structure; laying a concrete protective layer on the steel bars to ensure that the N U-shaped hanging rings protrude from the concrete protective layer and extend forward.

[0133] The biggest feature of the steel support hanging plate assembly in this embodiment is that it can be conveniently installed and removed without tools, and the L-shaped hanging plate can be reused. When the steel support needs to be removed, after step D, the following steps are further included:

[0134] Step E, disconnect the pulling cables on the two side arc segments, and remove the steel support from the two side L-shaped hanging plates;

[0135] Step F, keep the N U-shaped hanging rings on both sides fixed to the steel bars, and remove the L-shaped hanging plates from the 2 hanging rings.

[0136] It can be seen from the above description that the steel support hanging plate assembly of this embodiment is not only applicable to the first support (straight support, not inclined support) supported on the capping beam, but also applicable to each support (straight support, not inclined support) of the retaining structure being a diaphragm wall; there is no need to pre-embed steel plates and anchor bars in advance, and the position of the steel support can be adjusted flexibly later; there is no need for post-implanted bars, and the force is reliable; the on-site construction welding operation is greatly reduced; the steel plate can be recycled without special tools, and it has good economic benefits. At the same time, by combining the hanging plate and the pulling cable, the problem of insufficient anti-falling measures for the steel support is solved, and the safety of the foundation pit construction is greatly improved.

[0137] So far, the various embodiments of the present invention have been introduced. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0138] For some implementation manners, if they are not the key content of the present invention and are well-known to those of ordinary skill in the art, due to space limitations, they are not described in detail in the specification drawings or the text. At this time, reference can be made to the relevant prior art for understanding.

[0139] It should be noted that, unless otherwise explicitly specified to the contrary, the numerical parameters in the specification and claims of the present invention may be approximate values and can be changed according to the content of the present invention. Specifically, all the numbers recorded in the specification and claims representing the contents of components, reaction conditions, etc. should be understood to be modified by the term "about" in all cases, and the meaning expressed is that it includes a change of ±10% of a specific quantity in some embodiments.

[0140] 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", "outer", etc., indicate the orientation or positional relationship only based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Moreover, throughout the drawings, the same elements are represented by the same or similar reference numerals. And, the shapes and sizes of the components in the figures do not reflect the actual size and proportion, but only illustrate the content of the embodiments of the present invention.

[0141] Those skilled in the art should understand that in the claims and specification of the present invention, the word "comprising" does not exclude the existence of elements (or steps) not listed in the claims. The word "a" or "an" preceding an element (or step) does not exclude the existence of a plurality of such elements (or steps).

[0142] Moreover, the purpose of providing the above embodiments is only to make the present invention meet the legal requirements, and the present invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein.

[0143] Similarly, it should be understood that, in order to streamline the present invention, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be construed as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More precisely, as reflected by the claims, each aspect of the invention lies in less than all the features of the preceding single embodiment. And, the embodiments can be mixed and used with each other or mixed and used with other embodiments based on considerations of design and reliability, that is, the technical features in different embodiments can be freely combined to form more embodiments. Therefore, the claims following the specific implementation manners are hereby expressly incorporated into the specific implementation manners, where each claim itself is a separate embodiment of the present invention.

[0144] In the above specific embodiments, the purpose, technical means and beneficial effects of the present invention have been described in detail. It should be understood that the purpose of the detailed description is for those skilled in the art to understand the present invention more clearly, and it is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steel support cladding assembly, characterized in that: include: N U-shaped hanging rings, the front end of each hanging ring is tilted upward, N ≥ 1; L-shaped siding, including: The hanging section is plate-shaped and extends in the vertical direction, and has N hanging holes on the top; The supporting section is fixed to the bottom end of the hanging section and extends in the horizontal direction in a plate shape; Wherein, the L-shaped hanging plate is hung on the N hanging rings through the N hanging holes; M pull ropes, M≥1, the pull ropes comprising: Ring section; sleeved on the outside of the steel support; The pull-up section has a front end connected to the collar section and a rear end fixed to the U-shaped hanging ring.

2. The steel support cladding assembly according to claim 1, characterized in that: And / or, the pulling rope is a steel wire rope; the ring section and the upper pull section are made by an integrated braiding process; And / or, M=N, the loop sections of the M pulling cables are all sleeved on the outside of the same steel support, and the rear ends of the upper pull sections of the M pulling cables are respectively fixed to the arc sections of the corresponding U-shaped hanging rings; And / or, the pulling rope further includes: a sleeve member, which is sleeved on the outer side of the connection between the ring section and the upper pull section of the pulling rope; wherein the sleeve member is filled with lubricating oil.

3. The steel support cladding assembly according to claim 1, characterized in that: The U-shaped hanging ring comprises: The arc segment at the front end; The shaft sections on both sides extend backward from the two ends of the arc segment; The welding sections on both sides extend from the rear ends of the corresponding shaft sections toward the left and right sides respectively; The horizontal plane projection of the arc segment and the two shaft segments is U-shaped; the front parts of the arc segment and / or the two shaft segments are tilted upward, and the tilting angle α is between 20° and 80°.

4. The steel support cladding assembly according to claim 3, characterized in that: The U-shaped hanging ring is made of round steel, and the diameter of the round steel is d; The welding sections on both sides of the U-shaped hanging ring are respectively welded to the horizontal steel bars of the fixed structure; the welding meets the following requirements: Single-side weld length: In the double-sided welding state, the single-side weld length shall not be less than 5d; in the single-sided welding state, the single-side weld length shall not be less than 10d; Effective thickness of weld: not less than 0.35d; Effective welding width: not less than 0.8d; The lengths of the welding sections on both sides are both H3, and H3 is greater than or equal to the length of the single-sided weld.

5. The steel support cladding assembly according to claim 4, characterized in that: The tilting angle α satisfies: 30°≤α≤45°; and / or, satisfying: 1≤H1:H2≤2, H1≥60cm, wherein H1 is the width of the arc segment, and H2 is the length of the shaft segment; And / or, the fixed structure is: a crown beam or a side of an underground continuous wall mounted with steel support; And / or, the hanging section of the L-shaped hanging plate is arranged close to the vertical surface of the fixed structure.

6. The steel support cladding assembly according to claim 4, characterized in that: N＝2； The diameter d of the round steel is a standard size that meets the following conditions: Where ρ is the bulk density 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 is the live load on each linear meter of steel support, G k is the total weight of the L-shaped hanging plates on both sides; [σ] is the allowable stress of the U-shaped hanging ring.

7. The steel support cladding assembly according to claim 3, characterized in that: The hanging hole is rectangular, and its height and width correspond to the diameter and width of the round steel of the arc segment respectively; And / or, the middle part of the support section of the L-shaped hanging plate is provided with angular raised patterns made of rubber material; And / or, the U-shaped hanging ring is made of a whole round steel in one piece; And / or, the hanging section and the supporting section of the hanging plate are integrally formed from a whole steel plate; And / or, the L-shaped hanging plate also includes: two lateral plates, respectively welded to the two sides of the L-shaped hanging plate; wherein each lateral plate is a right-angled triangle, and the first right-angled side of the lateral plate is welded and fixed to the hanging section; the second right-angled side is welded and fixed to the supporting section on the same side.

8. A steel support construction method, characterized in that: Using two sets of steel support cladding assemblies as claimed in claim 1, the steel support construction method includes: Step A, welding N U-shaped hanging rings on the steel bars on the fixed structures at both sides; Step B, respectively hang the L-shaped hanging plates on both sides on the corresponding N U-shaped hanging rings through the hanging holes; Step C, the two sides of the steel support are respectively passed through the ring sections of the corresponding pull cables and erected between the L-shaped hanging plates on both sides; Step D, tighten the rear ends of the upper pull sections of the pull cables on both sides and fix them on the arc segments.

9. The steel support construction method according to claim 8, characterized in that: The fixed structure is a crown beam or an underground continuous wall; When the steel support frame is installed on the original fixed structure, the step A includes: partially breaking the concrete protective layer of the fixed structure to expose the steel bars, and welding the two side welding sections of N U-shaped hanging rings to the steel bars; Or, when installing a steel support frame on a newly built fixed structure, step A includes: pre-welding N U-shaped hanging rings on the steel bars of the newly built fixed structure; laying a concrete protective layer on the steel bars to ensure that the N U-shaped hanging rings extend out of the concrete protective layer and extend forward.

10. The steel support construction method according to claim 8, characterized in that: When the steel support needs to be removed, the step D further includes: Step E, disconnect the pull cables on the arc segments on both sides, and remove the steel supports from the L-shaped hanging plates on both sides; Step F, keep the N U-shaped hanging rings on both sides fixed on the steel bars, and remove the L-shaped hanging plates from the N hanging rings.

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