Square column workbench bearing structural member for building and application method thereof

Abstract

The invention provides a square column workbench bearing structural member for a building and an application method of the square column workbench bearing structural member, and relates to the technical field of building structural members. The technical problems of high construction difficulty, low working efficiency and high cost in the prior art are solved. The square column workbench bearing structural member for the building comprises four arc-shaped clamping plates, temporary fixing devices, prestressed steel beams, locking devices, jacks, cross beams, longitudinal beams, walking beams and guardrails, and each arc-shaped clamping plate comprises an outer side arc-shaped plate, an inner side plane plate and a connecting rib; the inner side surface plates are of a plane structure, and the inner side surface plates of the four arc-shaped clamping plates abut against the four outer wall faces, perpendicular to one another, of the square column respectively. The walking beams are laid on the tops of the longitudinal beams around the square columns, and a workbench used for construction operation of operators is formed on the top faces of the walking beams. The construction difficulty and cost are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building structural components, and particularly relates to a square column workbench bearing structural component for buildings and an application method of the square column workbench bearing structural component for buildings. Background Art

[0002] A square column is a common leg structure in buildings, and the square column can compensate for the influence of foundations at different heights on the levelness of the building.

[0003] Compared with columns of other shapes (such as circular columns), the square column has the advantages of regular structure, good stability, outstanding seismic performance, and convenient construction, so the square column is widely used.

[0004] In the prior art, when constructing a building on a square column, it is necessary to build a workbench around the square column to facilitate the operator to operate construction equipment for construction operations. However, the applicant has found that the prior art has at least the following technical problems: When building a workbench around a square column in the prior art, in order to ensure the stability of the workbench, it is necessary to reinforce the foundation around the square column. Otherwise, the built workbench may tilt or collapse when bearing heavy pressure. However, reinforcing the foundation around the square column will inevitably consume a lot of time, and at the same time, it will consume a lot of manpower, material resources and financial resources. Moreover, when treating the foundation around the square column, the structural strength of the square column itself may also be damaged. Especially for square columns with a particularly high height position, a workbench with a higher height needs to be built. For this reason, more time is consumed for treating the foundation around the square column, which not only increases the construction difficulty and construction cost, but also reduces the overall construction work efficiency. Summary of the Invention

[0005] The embodiments of the present invention provide a square column workbench bearing structural component for buildings and an application method thereof, which solve the technical problems of large construction difficulty, low work efficiency and high cost existing in the prior art.

[0006] The embodiments of the present invention provide the following technical solutions: The square column workbench bearing structural component for buildings provided by the embodiments of the present invention includes arc-shaped clamping plates, temporary fixing devices, prestressed steel bundles, locking devices, jacks, cross beams, longitudinal beams, walking beams and guardrails, wherein: The number of the arc-shaped clamping plates is four. The height direction of the square column is perpendicular to the horizontal plane, and the outer contour of the horizontal cross-section of the square column is square; Each of the arc-shaped clamping plates includes an outer arc-shaped plate, an inner flat plate, and grid-shaped connecting ribs connected between the outer arc-shaped plate and the inner flat plate. The outer wall of the outer arc-shaped plate is an outwardly arched arc structure, and a concave steel tendon accommodating groove is provided on the outer wall of the outer arc-shaped plate. The inner flat plate is a flat structure, and the inner flat plates of the four arc-shaped clamping plates respectively press against the four mutually perpendicular outer wall surfaces of the square column; the edge of the square column perpendicular to the horizontal plane is exposed between adjacent arc-shaped clamping plates; The temporary fixing device is four chains, and the four chains are respectively connected between the connecting ribs of adjacent arc-shaped clamping plates and jointly lock and connect all the arc-shaped clamping plates together temporarily; The number of the prestressed steel tendons is two, and the prestressed steel tendons bypass the arc-shaped clamping plates through the steel tendon accommodating grooves and stretch and lock the positions of the arc-shaped clamping plates on the square column. Both ends of the prestressed steel tendons are detachably fixedly connected through the locking device; The number of the jacks is an even number, and the jacks are detachably arranged in pairs on the arc-shaped clamping plates on the front and back sides and / or the left and right sides of the square column; The number of the cross beams is an even number and is arranged in pairs on the jacks, and the cross beams can rise or fall under the thrust of the piston rods of the jacks; A plurality of longitudinal beams are arranged on the tops of the cross beams around the square column, and the length direction of the longitudinal beams is perpendicular to the length direction of the cross beams; the walking beam is laid on the tops of the longitudinal beams around the square column, and the top surface of the walking beam forms a working platform for operators to carry out construction operations, and the guardrail is arranged at the edge of the walking beam.

[0007] Optionally, the building square column workbench bearing structure member further includes bent clamping plates, flanges, support plates, and fasteners, wherein: The number of the bent clamping plates is two. Each bent clamping plate includes a first pressing plate, a second pressing plate, a first protruding connecting portion, and a second protruding connecting portion. The first pressing plate and the second pressing plate of each bent clamping plate respectively press against two adjacent and mutually perpendicular outer wall surfaces of the square column; The support plate is fixedly arranged at the top end of the first pressing plate, and the top surface of the support plate supports the bottom surface of the arc-shaped clamping plate; one end of the first pressing plate is integrally connected with the first protruding connecting portion, and a flange is fixedly arranged on the first protruding connecting portion. The other end of the first pressing plate is integrally connected with one end of the second pressing plate, and there is a gap between the connection part of the two and the edge of the square column. The other end of the second pressing plate is integrally connected with the second protruding connecting portion, and another flange is fixedly arranged on the second protruding connecting portion; The two bending clamping plates are symmetrically arranged around the square column, and the two bending clamping plates are fixedly connected together by fasteners passing through the flange.

[0008] Optionally, the building square column workbench bearing structure member further includes support clamping plates, flange plates, lifting plates and connecting members, wherein: the number of the support clamping plates is two, and each support clamping plate includes a first abutting plate, a second abutting plate, a first outward convex docking portion and a second outward convex docking portion. The first abutting plate and the second abutting plate of each support clamping plate respectively press against two adjacent and perpendicular outer wall surfaces of the square column; the top end of the first abutting plate is fixedly provided with the lifting plate, and the top surface of the lifting plate supports the bottom surface of the bending clamping plate; one end of the first abutting plate is integrally connected with the first outward convex docking portion, and one flange plate is fixedly arranged on the first outward convex docking portion. The other end of the first abutting plate is integrally connected with one end of the second abutting plate, and there is a gap between the connection part of the two and the edge of the square column. The other end of the second abutting plate is integrally connected with the second outward convex docking portion, and another flange plate is fixedly arranged on the second outward convex docking portion; the two support clamping plates are symmetrically arranged around the square column, and the two support clamping plates are fixedly connected together by connecting members passing through the flange plates; the length direction of the support clamping plate is staggered with the length direction of the bending clamping plate; And / or, inner cushion plates are arranged on the inner sides of the first pressing plate and the second pressing plate respectively, and both of them press against the outer wall surface of the square column through the inner cushion plates. The pre-tightening force applied by the fastener to the flange satisfies the following formula: Wherein: F1 is the pre-tightening force applied by the fastener to the flange; k1 is the safety factor, and the value of k1 takes any value between 1.1 and 1.4; e is the included angle between the flange and the outer wall surface of the adjacent square column; μ1 is the friction coefficient between the first pressing plate or the second pressing plate and the contact surface of the inner cushion plate; G is the sum of the upper load borne by each bending clamping plate and the self-weight of each bending clamping plate.

[0009] Optionally, the inner cushion plate is made of rubber material.

[0010] Optionally, the outer contour of the horizontal section of the edge of the square column is an arc; The shapes of the horizontal sections of the first protruding connection portion and the second protruding connection portion are both in a shape that gradually reduces in area in a direction away from the square column.

[0011] Optionally, the prestressed steel bundle is composed of a plurality of cables, and a plurality of cable grooves are arranged on the bottom surface of the steel bundle accommodating groove, and different cables are embedded in different cable grooves.

[0012] Optionally, the pulling force applied by the temporary fixing device to the arc-shaped clamping plate is less than the pulling force applied by the prestressed steel bundle to the arc-shaped clamping plate; The calculation formula for the pulling force applied by the temporary fixing device to the arc-shaped clamping plate is: The calculation formula for the pulling force applied by the prestressed steel bundle to the arc-shaped clamping plate is: In the formula: P1 is the pulling force applied by the temporary fixing device to the arc-shaped clamping plate; P2 is the pulling force applied by the prestressed steel bundle to the arc-shaped clamping plate; k is a safety factor, and the value of k is any value between 1.2 and 1.4 (preferably 1.3); G is the self-weight of the arc-shaped clamping plate; μ is the friction coefficient between the arc-shaped clamping plate and the outer wall surface of the square column; α is the included angle between the pulling force applied by the temporary fixing device and the outer wall surface of the stressed square column; N is the number of square columns, and its value is 1; β is the included angle between the pulling force applied by the prestressed steel bundle and the outer wall surface of the stressed square column; F is the sum of the downward pressures borne by all the arc-shaped clamping plates on the square column (the value of this pressure is the sum of all the downward forces applied to the arc-shaped clamping plates by the jack, cross beam, longitudinal beam, walking beam, guardrail, and operators, etc.).

[0013] Optionally, the locking device includes a first pipe joint, a double-headed screw, and a second pipe joint. One end of the first pipe joint is connected to one prestressed steel bundle, and one end of the second pipe joint is connected to another prestressed steel bundle. The other ends of the first pipe joint and the second pipe joint are respectively sleeved on both ends of the double-headed screw and are threadedly connected to both ends of the double-headed screw. During the process of rotating the double-headed screw, the double-headed screw can drive the first pipe joint and the second pipe joint to approach or move away from each other (thereby adjusting the locking and relaxation of the device and the prestressed steel bundle).

[0014] Optionally, the four arc-shaped clamping plates form an axisymmetric structure with the diagonal of the outer contour of the horizontal section of the square column as the axis.

[0015] The application method of the building square column workbench bearing structure member provided by the embodiment of the present invention includes the following steps: Step A: Install the building square column workbench bearing structure member provided by the embodiment of the present invention on the square column; Step B: The operator constructs on the workbench of the building square column workbench bearing structure member, and completes the construction (including curing) of the predetermined structure on the square column; Step C: Remove the building square column workbench bearing structure member.

[0016] At least the following technical effects are produced by any of the above technical solutions provided by the embodiment of the present invention: The building square column workbench bearing structure member provided by the embodiment of the present invention utilizes the arc-shaped clamping plate to convert the gravity of the workbench (walking beam) for the operator's construction operation, the guardrail, the operator, materials and equipment on the workbench, and the gravity of the longitudinal beam and cross beam carrying the workbench (walking beam) and the guardrail into the pressure applied to the four mutually perpendicular outer wall surfaces of the square column, and then into the friction force between the four mutually perpendicular outer wall surfaces of the square column and the arc-shaped clamping plate. This conversion makes full use of the four mutually perpendicular outer wall surfaces of the square column as the friction bearing surface, eliminating the need to build brackets and workbenches on the foundation around the square column, thus avoiding the foundation treatment process for strengthening the area around the square column and the time, manpower, material resources and financial resources consumed during the strengthening process. At the same time, the adjacent arc-shaped clamping plates avoid the edges of the square column perpendicular to the horizontal plane, not only preventing the problem of stress concentration damaging the edges of the square column, but also ensuring that when the arc-shaped clamping plate converts the vertical load (gravity) into the pressure and friction force applied to the four mutually perpendicular outer wall surfaces of the square column, it is not interfered by the edges of the square column. Moreover, the inner flat plate of the arc-shaped clamping plate will not bend and deform under pressure, which may cause the pressure applied to the four mutually perpendicular outer wall surfaces of the square column to deviate, generate improper component forces, and ineffective load sharing. Therefore, not only the conversion efficiency of the arc-shaped clamping plate converting the pre-tightening force into the vertical friction resistance is improved, but also the stability of the workbench is ensured, thus solving the technical problems of high construction difficulty, low work efficiency and high cost existing in the prior art.

[0017] In addition, the setting of the jack in the present invention can not only accurately adjust the levelness and position height of the cross beam, and thus accurately adjust the levelness and position height of the workbench, but also the jack is detachable and can be disassembled and reused after use, further reducing the construction cost. Description of the Drawings

[0018] Through the following drawings, those skilled in the art can better understand the technical effects of the present invention.

[0019] Figure 1 Schematic diagram of the positional relationship between the arc-shaped clamping plate, temporary fixing device, prestressed steel strand, and locking device of the building square-column workbench bearing structure member provided by the embodiment of the present invention and the square column.

[0020] Figure 2 Schematic diagram of an arc-shaped clamping plate of the building square-column workbench bearing structure member provided by the embodiment of the present invention.

[0021] Figure 3 Another schematic diagram of an arc-shaped clamping plate of the building square-column workbench bearing structure member provided by the embodiment of the present invention.

[0022] Figure 4 Schematic diagram of the external force exerted by the arc-shaped clamping plate of the building square-column workbench bearing structure member provided by the embodiment of the present invention on the square column.

[0023] Figure 5 Schematic diagram of the load exerted by the temporary fixing device of the building square-column workbench bearing structure member provided by the embodiment of the present invention on the arc-shaped clamping plate.

[0024] Figure 6 Schematic diagram of the tensile force exerted by the prestressed steel strand of the building square-column workbench bearing structure member provided by the embodiment of the present invention on the arc-shaped clamping plate.

[0025] Figure 7 Schematic diagram of the positional relationship between the bent clamping plate, flange, and support plate of the building square-column workbench bearing structure member provided by the embodiment of the present invention and the square column.

[0026] Figure 8 Schematic diagram of the force exerted on the bent clamping plate of the building square-column workbench bearing structure member provided by the embodiment of the present invention.

[0027] Figure 9 Schematic diagram of the positional relationship between the support clamping plate, flange plate, lifting plate, and connecting member of the building square-column workbench bearing structure member provided by the embodiment of the present invention.

[0028] Figure 10 Schematic diagram of the positional relationship between the building square-column workbench bearing structure member and the square column provided by the preferred embodiment of the embodiment of the present invention.

[0029] Figure 11 Schematic diagram of the connection relationship between the components of the locking device of the building square-column workbench bearing structure member provided by the embodiment of the present invention; Markings in the figure: 1, arc-shaped clamping plate; 11, outer arc-shaped plate; 12, inner flat plate; 13, connecting rib; 14, steel strand accommodating groove; 2, temporary fixing device; 20, connecting hole of the temporary fixing device; 3, prestressed steel strand; 4, locking device; 41, first pipe joint; 42, double-headed screw; 43, second pipe joint; 5, jack; 6, cross beam; 7, longitudinal beam; 8, walking beam; 9, guardrail; 10, bent clamping plate; 101, first pressing plate; 102, second pressing plate; 103, inner cushion plate; 104, first protruding connecting part; 105, second protruding connecting part; 106, gap; 15, flange; 16, support plate; 17, fastener; 18, square column; 19, support clamping plate; 191, first abutting plate; 192, second abutting plate; 193, soft cushion plate; 194, first outer convex docking part; 195, second outer convex docking part; 196, gap; 197, flange plate; 198, lifting plate; 199, connecting piece. Detailed implementation mode

[0030] The following combines the above attachments Figures 1-11 To more specifically illustrate the preferred implementation modes provided by the embodiments of the present invention and many optional implementation schemes.

[0031] As Figures 1-11 As shown, the square column workbench bearing structure member for buildings provided by the embodiments of the present invention includes an arc-shaped clamping plate 1, a temporary fixing device 2, a prestressed steel strand 3, a locking device 4, a jack 5, a cross beam 6, a longitudinal beam 7, a walking beam 8, and a guardrail 9, wherein: The number of arc-shaped clamping plates 1 is four. The height direction of the square column 18 is perpendicular to the horizontal plane, and the outer contour of the horizontal section of the square column 18 is square; Each arc-shaped clamping plate 1 includes an outer arc-shaped plate 11, an inner flat plate 12, and a grid-shaped connecting rib 13 connecting the outer arc-shaped plate 11 and the inner flat plate 12. The outer wall of the outer arc-shaped plate 11 is an outwardly arched arc structure, and an inwardly concave steel strand accommodating groove 14 is provided on the outer wall of the outer arc-shaped plate 11. The inner flat plate 12 is a flat structure, and the inner flat plates 12 of the four arc-shaped clamping plates 1 respectively press against the four mutually perpendicular outer wall surfaces of the square column 18; the edges perpendicular to the horizontal plane of the square column 18 are exposed between adjacent arc-shaped clamping plates 1; The temporary fixing device 2 is four chains, and the four chains are respectively connected between the connecting ribs 13 of adjacent arc-shaped clamping plates 1 and jointly lock and connect all the arc-shaped clamping plates 1 together temporarily; The number of prestressed steel strands 3 is two, and the prestressed steel strands 3 bypass the arc-shaped clamping plates 1 through the steel strand accommodating grooves 14 and tension and lock the positions of the arc-shaped clamping plates 1 on the square column 18. Both ends of the prestressed steel strands 3 are detachably fixedly connected through the locking device 4; The number of the jacks 5 is an even number, and the jacks 5 are detachably arranged in pairs on the arc-shaped clamping plates 1 on the front and rear sides and / or the left and right sides of the square column 18; The number of the cross beams 6 is an even number, and the cross beams 6 are arranged in pairs on the jacks 5, and the cross beams 6 can rise or fall under the thrust of the piston rods of the jacks 5. The arrangement of the jacks 5 in the present invention can not only accurately adjust the levelness and the position height of the cross beams 6, and further accurately adjust the levelness and the position height of the workbench, but also the jacks 5 are detachably arranged and can be disassembled and reused after use, further reducing the construction cost.

[0032] A plurality of longitudinal beams 7 are arranged on the tops of the cross beams 6 around the square column 18, and the length direction of the longitudinal beams 7 is perpendicular to the length direction of the cross beams 6; a walking beam 8 is laid on the tops of the longitudinal beams 7 around the square column 18, and the top surface of the walking beam 8 forms a workbench for the operators to perform construction operations, and guardrails 9 are arranged at the edges of the walking beam 8.

[0033] The building square column workbench bearing structure member provided by the embodiment of the present invention utilizes the arc-shaped clamping plates 1 to convert the gravity of the workbench (walking beam 8) for the operators to perform construction operations, the guardrails 9, the operators, materials and equipment on the workbench, as well as the gravity of the longitudinal beams 7 and the cross beams 6 bearing the workbench (walking beam 8) and the guardrails 9 into the pressure applied to the four mutually perpendicular outer wall surfaces of the square column 18, and further into the frictional force between the four mutually perpendicular outer wall surfaces of the square column 18 and the arc-shaped clamping plates 1. This conversion makes full use of the four mutually perpendicular outer wall surfaces of the square column 18 as the bearing surfaces, without building a support workbench on the foundation around the square column 18, and further omitting the foundation reinforcement treatment process around the square column 18, reducing the time, manpower, material resources and financial resources consumed. At the same time, the edges of the square column 18 perpendicular to the horizontal plane are exposed between adjacent arc-shaped clamping plates 1, which not only avoids the problem of stress concentration damaging the edges of the square column 18, but also ensures that when the arc-shaped clamping plates 1 convert the vertical load (gravity) into the pressure and frictional force applied to the four mutually perpendicular outer wall surfaces of the square column 18, they are not interfered by the edges of the square column 18, and moreover, the inner flat plates 12 of the arc-shaped clamping plates 1 will not be bent and deformed due to pressure, thereby causing the pressure applied to the four mutually perpendicular outer wall surfaces of the square column 18 to be deflected and generate improper component forces. Therefore, not only the conversion efficiency of the arc-shaped clamping plates 1 converting the pre-tightening force into the vertical frictional resistance is improved, but also the stability of the workbench is ensured.

[0034] Figure 4 In the formula, F' represents the pressure applied by each arc-shaped clamping plate 1 to the four mutually perpendicular outer wall surfaces of the square column 18 in this embodiment.

[0035] As an alternative embodiment, in this embodiment, the square column workbench bearing structure member for a building further includes a bent splint 10, a flange 15, a support plate 16, and a fastener 17, where: The number of the bent splints 10 is two. Each bent splint 10 includes a first pressing plate 101, a second pressing plate 102, a first protruding connecting portion 104, and a second protruding connecting portion 105. The first pressing plate 101 and the second pressing plate 102 of each bent splint 10 respectively press against two adjacent and perpendicular outer wall surfaces of the square column 18; A support plate 16 is fixedly arranged at the top end of the first pressing plate 101, and the top surface of the support plate 16 supports the bottom surface of the arc-shaped splint 1; one end of the first pressing plate 101 is integrally connected with the first protruding connecting portion 104, and a flange 15 is fixedly arranged on the first protruding connecting portion 104. The other end of the first pressing plate 101 is integrally connected with one end of the second pressing plate 102, and there is a gap 106 between the connection part of the two and the edge of the square column 18. The other end of the second pressing plate 102 is integrally with the second protruding connecting portion 105, and another flange 15 is fixedly arranged on the second protruding connecting portion 105; The two bent splints 10 are symmetrically arranged around the square column 18, and the two bent splints 10 are fixedly connected together by a fastener 17 passing through the flange 15.

[0036] The bent splint 10 and the support plate 16 provide support for the arc-shaped splint 1. When the friction force between the arc-shaped splint 1 and the four mutually perpendicular outer wall surfaces of the square column 18 is insufficient, the bent splint 10 can play a compensating role, thereby improving the bearing stability and reliability of the workbench. At the same time, since the clamping method of the bent splint 10 is different from that of the arc-shaped splint 1, the components are also different, avoiding the problem that the entire structure fails due to the unqualified of the same component, and greatly improving the reliability and safety of the entire system.

[0037] As an alternative embodiment, the square column workbench bearing structure member for a building preferably further includes support clamping plates 19, flange plates 197, lifting plates 198, and connecting members 199, where: The number of support clamping plates 19 is two, and each support clamping plate 19 includes a first abutting plate 191, a second abutting plate 192, a first outwardly convex docking portion 194, and a second outwardly convex docking portion 195. The first abutting plate 191 and the second abutting plate 192 of each support clamping plate 19 respectively press against two adjacent and mutually perpendicular outer wall surfaces of the square column 18; A lifting plate 198 is fixedly provided at the top end of the first abutting plate 191, and the top surface of the lifting plate 198 supports the bottom surface of the bending clamping plate 10; One end of the first abutting plate 191 is integrally connected to the first outwardly convex docking portion 194, and a flange plate 197 is fixedly provided on the first outwardly convex docking portion 194. The other end of the first abutting plate 191 is integrally connected to one end of the second abutting plate 192, and there is a gap between the connection portion of the two and the edge of the square column 18. The other end of the second abutting plate 192 is integrally connected to the second outwardly convex docking portion 195, and another flange plate 197 is fixedly provided on the second outwardly convex docking portion 195; The two support clamping plates 19 are symmetrically arranged around the square column 18, and the two support clamping plates 19 are fixedly connected together by a connecting member 199 passing through the flange plate 197; The length direction of the support clamping plate 19 and the length direction of the bending clamping plate 10 are staggered with each other (preferably perpendicular to each other).

[0038] On the one hand, the support clamping plate 19 can support and lift the bending clamping plate 10, further improving the firmness and safety of the bending clamping plate 10 and the entire square column workbench bearing structure member for a building; On the other hand, the length direction of the support clamping plate 19 and the length direction of the bending clamping plate 10 are staggered with each other, thereby ensuring that the forces on each surface of the square column 18 are more uniform and not easily damaged due to local stress concentration.

[0039] As an alternative embodiment, inner cushion plates 103 are further provided on the inner sides of the first pressing plate 101 and the second pressing plate 102 respectively, and both of them press against the outer wall surface of the square column 18 through the inner cushion plates 103. The inner cushion plates 103 can increase the friction force between the first pressing plate 101 and the second pressing plate 102 and the outer wall surface of the square column 18 respectively.

[0040] Figure 8 In the formula, F2 represents the pressure borne by any force-bearing surface of the first pressing plate 101 and the second pressing plate 102.

[0041] In this embodiment, the pre-tightening force applied by the fastener 17 to the flange 15 satisfies the following formula: Where: F1 is the pre-tightening force applied by the fastener 17 to the flange 15; k1 is the safety factor, and the value of k1 is any value between 1.1 and 1.4 (preferably 1.25. The larger the safety factor value, the better the safety, but the cost will also increase. Therefore, a value can be selected after weighing between safety and economy according to actual needs); e is the included angle between the outer wall surface of the flange 15 and the adjacent square column 18; μ1 is the friction coefficient between the first pressing plate 101 or the second pressing plate 102 and the contact surface of the inner cushion plate; G is the sum of the upper load borne by each bending splint 10 and the self-weight of each bending splint 10.

[0042] The reasoning process of the above formula is as follows: The pressure borne by any stress-bearing surface of the first pressing plate 101 and the second pressing plate 102 is: The vertical frictional force that can be provided by any stress-bearing surface of the first pressing plate 101 and the second pressing plate 102 is: Statistically, the vertical load that can be borne by the four stress-bearing surfaces is: The condition for the bearing capacity to meet the design requirements is: As an optional implementation manner, in this embodiment, the inner cushion plate is made of rubber. The rubber material has a large surface roughness and buffering characteristics, which can avoid damaging the outer wall surface of the square column 18 while ensuring sufficient frictional force.

[0043] As an optional implementation manner, in this embodiment, the outer contour of the horizontal section of the edge of the square column 18 is an arc; this structure can avoid stress concentration at the edges of the square column 18, thereby ensuring the reliability and stability of the workbench. The shapes of the horizontal sections of both the first protruding connection part and the second protruding connection part are in the shape of gradually shrinking areas in the direction away from the square column 18. Since the first protruding connection part and the second protruding connection part are less stressed the farther away they are from the square column 18, their sizes can be set smaller, which is beneficial to reducing the weight of the product and the material cost consumed.

[0044] As an optional implementation manner, in this embodiment, the prestressed steel bundle 3 is composed of several cables, and several cable grooves are provided on the bottom surface of the steel bundle accommodating groove 14, and different cables are embedded in different cable grooves.

[0045] The cable grooves can prevent the cables of the prestressed steel bundle 3 from swinging or crossing, thereby avoiding stress concentration in some sections of the cables, and thus improving the strength and service life of the entire prestressed steel bundle 3.

[0046] As an optional implementation manner, in this embodiment, the tensile force applied by the temporary fixing device 2 to the arc-shaped clamping plate 1 is less than the tensile force applied by the prestressed steel strand 3 to the arc-shaped clamping plate 1; The calculation formula for the tensile force applied by the temporary fixing device 2 to the arc-shaped clamping plate 1 is: The calculation formula for the tensile force applied by the prestressed steel strand 3 to the arc-shaped clamping plate 1 is: In the formula: P1 is the tensile force applied by the temporary fixing device 2 to the arc-shaped clamping plate 1; P2 is the tensile force applied by the prestressed steel strand 3 to the arc-shaped clamping plate 1; k is the safety factor, and the value of k is any value between 1.2 and 1.4 (preferably 1.3); G is the self-weight of the arc-shaped clamping plate 1; μ is the friction coefficient between the arc-shaped clamping plate 1 and the outer wall surface of the square column 18; α is the included angle between the tensile force applied by the temporary fixing device 2 and the outer wall surface of the stressed square column 18; N is the number of square columns 18, and its value is 1; β is the included angle between the tensile force applied by the prestressed steel strand 3 and the outer wall surface of the stressed square column 18; F is the sum of the downward pressures borne by all the arc-shaped clamping plates 1 on the square column (the value of this pressure is the sum of all the downward forces applied to the arc-shaped clamping plate 1 by the jack 5, the cross beam 6, the longitudinal beam 7, the walking beam 8, the guardrail 9, and the operator, etc.).

[0047] The temporary fixing device 2 is provided to facilitate the quick connection of the arc-shaped clamping plate 1 to accelerate the installation process. The main tensile force borne by the arc-shaped clamping plate 1 is applied to the arc-shaped clamping plate 1 by the prestressed steel strand 3. The above formula can ensure that the temporary fixing device 2 and the prestressed steel strand 3 meet the necessary force-bearing capacity, and will not cause the problem of excessive cost due to excessive designed force-bearing capacity.

[0048] As an optional implementation manner, in this embodiment, the locking device 4 includes a first pipe joint 41, a double-headed screw 42, and a second pipe joint 43. One end of the first pipe joint 41 is connected to a prestressed steel strand 3, and one end of the second pipe joint 43 is connected to another prestressed steel strand 3. The other ends of the first pipe joint 41 and the second pipe joint 43 are respectively sleeved on both ends of the double-headed screw 42 and are threadedly connected to both ends of the double-headed screw 42. During the process of rotating the double-headed screw 42, the double-headed screw 42 can drive the first pipe joint 41 and the second pipe joint 43 to approach or move away from each other.

[0049] The above design has the advantages of compact structure, convenient operation, safety and reliability.

[0050] As an alternative embodiment, in this embodiment, the four arc-shaped clamping plates 1 form an axisymmetric structure with the diagonal of the outer contour of the horizontal cross-section of the square column 18 as the axis.

[0051] The axisymmetric structure is convenient for mass production, manufacturing and assembling components on the one hand, and can ensure that the outer wall surfaces of the square column 18 are more evenly stressed on the other hand, thus avoiding damage to the square column 18.

[0052] The application method of the building square column workbench bearing structure member provided by the embodiment of the present invention includes the following steps: Step A: Install the building square column workbench bearing structure member provided by the embodiment of the present invention on the square column 18; Step B: The operator constructs on the workbench of the building square column workbench bearing structure member and completes the construction (including curing) of the predetermined structure on the square column 18; Step C: Remove the building square column workbench bearing structure member.

[0053] When installing the building square column workbench bearing structure member provided by the embodiment of the present invention, the components can be lifted and installed one by one from bottom to top by a crane, without building an installation bracket around the square column 18, which greatly saves construction time and improves construction efficiency.

[0054] The above technical solutions are all preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A square column workbench for a building bearing structural member, characterized in that: It includes arc-shaped clamps, temporary fixing devices, prestressed steel strands, locking devices, jacks, cross beams, longitudinal beams, walking beams and guardrails, of which: The number of the arc-shaped clamping plates is four, the height direction of the square column is perpendicular to the horizontal plane, and the outer contour of the horizontal cross section of the square column is a square; Each of the arc-shaped clamping plates comprises an outer arc-shaped plate, an inner flat plate and a grid-shaped connecting rib connected between the outer arc-shaped plate and the inner flat plate, the outer wall of the outer arc-shaped plate is an outwardly arched arc structure, and the outer wall of the outer arc-shaped plate is provided with an inwardly concave steel bundle receiving groove, the inner flat plate is a plane structure, and the inner flat plates of the four arc-shaped clamping plates are respectively pressed against the four mutually perpendicular outer wall surfaces of the square column; the edges of the square column perpendicular to the horizontal plane are exposed between the adjacent arc-shaped clamping plates; The temporary fixing device is four chains, and the four chains are respectively connected between the connecting ribs of the adjacent arc-shaped clamping plates and jointly temporarily lock and connect all the arc-shaped clamping plates together; The number of the prestressed steel bundles is two and they pass through the steel bundle accommodating groove to bypass the arc-shaped clamping plate and tighten and lock the position of the arc-shaped clamping plate on the square column. Both ends of the prestressed steel bundle are detachably fixedly connected by the locking device; The number of the jacks is an even number and the jacks are detachably arranged in pairs on the arc-shaped clamping plates on the front and rear sides and / or the left and right sides of the square column; The number of the cross beams is an even number and they are arranged in pairs on the jack, and the cross beams can rise or fall under the thrust of the piston rod of the jack; Several longitudinal beams are arranged on the top of the cross beams around the square columns, and the length direction of the longitudinal beams is perpendicular to the length direction of the cross beams; the walking beams are laid on the top of the longitudinal beams around the square columns and the top surfaces of the walking beams form a workbench for operators to work, and the guardrails are arranged at the edges of the walking beams.

2. The square column workbench load-bearing structural member for buildings according to claim 1, characterized in that: The square column workbench bearing structural member for buildings also includes a bent clamp, a flange, a support plate and fasteners, wherein: The number of the bending clamps is two, each of which includes a first pressing plate, a second pressing plate, a first protruding connecting portion, and a second protruding connecting portion, and the first pressing plate and the second pressing plate of each bending clamp respectively press against two outer wall surfaces of the square column that are adjacent and perpendicular to each other; The support plate is fixedly arranged on the top of the first pressure plate, and the top surface of the support plate supports the bottom surface of the arc-shaped clamping plate; one end of the first pressure plate is connected to the first protruding connection part as a whole, and the first protruding connection part is fixedly provided with a flange; the other end of the first pressure plate is connected to one end of the second pressure plate as a whole, and there is a gap between the connection between the two and the edge of the square column; the other end of the second pressure plate is connected to the second protruding connection part as a whole, and the second protruding connection part is fixedly provided with another flange; The two bent clamps are symmetrically arranged around the square column and are fixedly connected together by fasteners penetrating the flange.

3. The square column workbench load-bearing structural member for buildings according to claim 2, characterized in that: The square column workbench bearing structural component for buildings also includes a supporting splint, a flange plate, a lifting plate and a connecting piece, wherein: the number of the supporting splints is two, each of the supporting splints includes a first abutting plate, a second abutting plate, a first convex docking portion and a second convex docking portion, the first abutting plate and the second abutting plate of each supporting splint respectively press against two adjacent and mutually perpendicular outer wall surfaces of the square column; the lifting plate is fixedly provided on the top end of the first abutting plate, and the top surface of the lifting plate supports the bottom surface of the bent splint; one end of the first abutting plate is connected to the first convex docking portion The first outer convex butt joint part is connected as a whole, a flange plate is fixedly provided on the first outer convex butt joint part, the other end of the first abutment plate is connected as a whole with one end of the second abutment plate, and there is a gap between the connection between the two and the edge of the square column, the other end of the second abutment plate is connected as a whole with the second outer convex butt joint part, and another flange plate is fixedly provided on the second outer convex butt joint part; the two support clamps are symmetrically arranged around the square column and the two support clamps are fixedly connected together by a connecting piece passing through the flange plate; the length direction of the support clamp is staggered with the length direction of the bent clamp; And / or, the first pressing plate and the second pressing plate are each provided with an inner pad on their inner sides and both press against the outer wall surface of the square column through the inner pad, and the preload force applied by the fastener to the flange satisfies the following formula: Where: F1 is the preload force applied by the fastener to the flange; k1 is the safety factor, and the value of k1 can be any value between 1.1 and 1.4; e is the angle between the flange and the outer wall of the adjacent square column; μ1 is the friction coefficient between the contact surface of the first pressing plate or the second pressing plate and the inner pad; G is the sum of the upper load borne by each bending splint and the deadweight of each bending splint.

4. The square column workbench load-bearing structural member for buildings according to claim 3, characterized in that: The inner pad is made of rubber.

5. The square column workbench load-bearing structural member for buildings according to claim 4, characterized in that: The outer contour of the horizontal cross section of the edge of the square column is an arc; The horizontal cross-sections of the first protruding connection portion and the second protruding connection portion are each in a shape in which the area gradually decreases in a direction away from the square column.

6. The square column workbench load-bearing structural member for buildings according to claim 1, characterized in that: The prestressed steel bundle is composed of a plurality of cables, and a plurality of cable grooves are arranged on the bottom surface of the steel bundle accommodating groove, and different cables are embedded in different cable grooves.

7. The square column workbench load-bearing structural member for buildings according to claim 1, characterized in that: The tensile force applied by the temporary fixing device to the arc-shaped clamping plate is smaller than the tensile force applied by the prestressed steel strand to the arc-shaped clamping plate; The calculation formula of the pulling force applied by the temporary fixing device to the arc-shaped clamping plate is: The calculation formula of the tension applied by the prestressed steel strand to the arc-shaped clamping plate is: In the formula: P1 is the tension applied by the temporary fixing device to the arc-shaped splint; P2 is the tension applied by the prestressed steel strand to the arc-shaped clamping plate; k is the safety factor, and the value of k can be any value between 1.2 and 1.4; G is the deadweight of the arc-shaped splint; μ is the friction coefficient between the arc-shaped clamping plate and the outer wall surface of the square column; α is the angle between the tension applied by the temporary fixing device and the outer wall surface of the square column under stress; N is the number of square columns, and its value is 1; β is the angle between the tension applied by the prestressed steel tendon and the outer wall surface of the stressed square column; F is the sum of the pressures from top to bottom borne by all the arc-shaped splints on the square column.

8. The square column workbench load-bearing structural member for buildings according to any one of claims 1 to 7, characterized in that: The locking device includes a first pipe joint, a stud screw and a second pipe joint, one end of the first pipe joint is connected to one of the prestressed steel bundles, one end of the second pipe joint is connected to another prestressed steel bundle, the other ends of the first pipe joint and the second pipe joint are respectively sleeved on both ends of the stud screw and threadedly connected to both ends of the stud screw, and during the rotation of the stud screw, the stud screw can drive the first pipe joint and the second pipe joint to approach or move away from each other.

9. The square column workbench load-bearing structural member for buildings according to claim 8, characterized in that: The four arc-shaped clamping plates form an axisymmetric structure with the diagonal line of the outer contour of the horizontal cross section of the square column as the axis.

10. An application method of the square column workbench for buildings bearing structural components according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step A: installing the square column workbench bearing structural member for buildings as claimed in any one of claims 1 to 9 on the square column; Step B: The operator performs construction on a workbench for carrying structural components of the building using a square column workbench, and completes the construction of a predetermined structure on the square column; Step C: Dismantle the building using a square column workbench to carry structural members.

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