Construction method of attached lifting scaffold based on soft foundation surface

Abstract

The invention relates to a construction method of an attached lifting scaffold based on a soft foundation surface. The construction method comprises the following steps: preparing for construction; determining the initial position of a scaffold body unit of the scaffold; the frame body units in the first step are assembled; the frame body guide frame is arranged in a frame body rail of the frame body unit and is temporarily fixed; hoisting equipment is used for hoisting all the assembled frame body units to the designed position in sequence according to the arrangement sequence and connecting the frame body units into a whole, and meanwhile temporary pulling and knotting of the frame body are made; a first embedded pipe attached to the support is embedded; positioning and mounting the force transmission piece; a first attachment support is installed and fixed; the adjusting back shore and the frame body falling protector are installed in place; and the turning plate is turned to one side of the structural body for protection, and sealing of the bottom of the frame body and the structural body is guaranteed. According to the method, the force transmission piece is placed between the attachment support and the concrete structure to serve as a rigid support, removal and repairing construction of soft materials on the surface of concrete are avoided, construction waste is reduced, green and energy-saving effects are achieved, and the installation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of scaffold construction, and in particular to a construction method of an attached lifting scaffold based on a soft base surface. Background Art

[0002] The attached lifting scaffolding equipment is a new type of scaffolding technology that has developed rapidly at the beginning of this century and has an important impact on the progress of construction technology in my country. The attached lifting scaffolding uses the concrete structure surface as the fulcrum to transform high-altitude operations into low-altitude operations, and to transform suspended operations into operations inside the frame. It has the characteristics of significant low carbon, high-tech content, and more economical, safer, and more convenient. With the promotion and use of composite insulation boards that play the role of non-disassembly external formwork and thermal insulation in the construction of cast-in-place concrete projects, the weak materials on the outer surface of the structure are not conducive to the installation of the attached lifting scaffolding. When installing the attached lifting scaffolding, it is necessary to first remove some of the weak materials to expose the rigid structure surface for support installation. After the support is removed, it is repaired with materials. The quality and construction period cannot be guaranteed, manpower and material resources are consumed, and the generation of construction waste is not conducive to green construction. Summary of the invention

[0003] The present invention aims to solve the deficiencies of the prior art and provides a construction method of an attached lifting scaffold based on a soft base surface.

[0004] To achieve the above object, the present invention adopts the following technical scheme: a construction method of an attached lifting scaffold based on a soft base surface, comprising the following steps:

[0005] S1. Construction preparation;

[0006] Including material and equipment preparation, design and processing of force transmission parts, attachment of supports, and setting up of operating platforms;

[0007] The force transmission member includes a force transmission steel plate and force transmission legs. Two pairs of force transmission legs are plug-welded and fixedly connected to the upper and lower ends of the back of the force transmission steel plate. A square hole is provided in the center of the force transmission steel plate.

[0008] The attachment support includes a triangular support and a lead screw. The upper and lower ends of the vertical side arms of the triangular support are provided with through holes corresponding to the lead screw. The outer wall of the triangular support away from the vertical side wall is sleeved with a lying U-shaped connector;

[0009] S2. According to the technical requirements of the plan layout, measure, lay out and locate to determine the starting position of the scaffolding unit;

[0010] S3. Assemble the frame units of the first step in sequence on the ground according to the arrangement order of the scaffolding. The span number of the frame unit shall not be greater than three to avoid the frame being too heavy to be moved during hoisting and connection;

[0011] S4, according to the installation order of each frame unit in the first step, the frame guide frame is installed into the frame track of the frame unit and temporarily fixed;

[0012] S5. Use lifting equipment to lift all assembled frame units to the designed positions in the order of arrangement and connect them into a whole, and make temporary tie-downs for the frame at the same time;

[0013] S6. Pre-embed the first embedded pipe of the attachment support according to the position of the machine position determined by the plan layout;

[0014] S7, positioning and installation of force transmission parts;

[0015] S8. After the frame guide frame and the attachment support are connected, the first attachment support is installed and fixed, that is, the lead screw is passed through the through hole and the embedded pipe, a pad is set on both ends of the lead screw, and nuts are threadedly connected at both ends of the lead screw, and fixed by tightening the nuts;

[0016] S9. Install the adjustable top support and frame fall arrester on the frame unit in place;

[0017] S10, flip the flap on the frame unit to one side of the structure for protection, ensuring that the bottom of the frame and the structure are closed;

[0018] S11, carry out subsequent installation construction according to the assembly sequence and construction method of the frame unit in the first step of installation;

[0019] S12, installation and commissioning of intelligent synchronous control lifting system;

[0020] S13. Self-inspection, rectification and acceptance.

[0021] In particular, S7 includes the following steps:

[0022] S71, laying out the lines, and measuring the center position of the force transmission leg according to the position of the embedded pipe;

[0023] S72, drilling, use a drill bit with a diameter of R+2mm to drill holes at the marked positions, and the drilling depth is h~h+10mm; R is the diameter of the leg, and h is the thickness of the material layer;

[0024] S73, installation, two force transmission pieces are installed at each attachment support position, each force transmission piece corresponds to a lead screw, and the force transmission legs are placed into the corresponding drilled holes. When the surface of the force transmission steel plate is parallel to the concrete surface, and the force transmission legs are in close contact with the concrete surface, the force transmission pieces are installed in place;

[0025] S74. Check: Use a level to check the verticality of the force transmission parts and measure the height difference between adjacent force transmission parts in the same vertical plane.

[0026] In particular, in S8, the frame guide frame is fixed to the connecting member by bolts.

[0027] In particular, S11 includes the following steps:

[0028] S111, sequentially hoisting the frame units of the second step, the third step and the fourth step;

[0029] S112, check the vertical deviation between the installation position of each layer of force transmission parts and the previous layer, adjust the drilling depth of each layer, ensure that the vertical deviation of each layer of force transmission parts is within the allowable range, and install the second and third layers of force transmission parts in sequence;

[0030] S113, sequentially installing the second and third attachment supports and the frame guide frame;

[0031] S114, installing the sub-plates and flaps on the shelf units at each layer;

[0032] S115. Install the adjustable top support and frame anti-fall device on the frame unit in place, adjust them to the working state, and complete the overall unloading of the scaffold frame.

[0033] In particular, in S12, the intelligent synchronous control main control cabinet and sub-control cabinet, sensors, cable circuit system, electric hoist, lower hoist seat, and upper hanging seat are installed in place, the circuit system is powered on and debugged, and the electric hoist is debugged and pre-tightened.

[0034] The beneficial effects of the present invention are as follows: the present invention avoids the removal and repair construction of weak materials on the concrete surface, reduces construction waste, and is green and energy-saving by arranging an attachment support and a force transmission member, and placing the force transmission member between the attachment support and the concrete structure as a rigid support, thereby reducing the removal and repair processes and improving the installation efficiency; the force transmission member is easy and quick to install, saving work hours; the force transmission member is clearly subjected to force after installation, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the connection between the frame unit, the attachment support and the force transmission member of the present invention;

[0036] Figure 2 It is a front view of the force transmission member of the present invention;

[0037] Figure 3 It is a left side view of the force transmission member of the present invention;

[0038] Figure 4 It is a schematic diagram of the connection between the attachment support and the force transmission member of the present invention;

[0039] Figure 5 It is a schematic diagram of calculation for designing the force transmission member of the present invention;

[0040] Figure 6 It is a construction flow chart of the present invention;

[0041] In the figure: 1-force transmission member; 11-force transmission steel plate; 12-force transmission leg; 13-square hole; 2-attachment support; 21-triangular support; 22-screw; 23-connector; 3-frame unit; 31-frame track; 4-frame guide frame; 5-embedded pipe; 6-pad;

[0042] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with embodiments:

[0044] like Figure 1-Figure 6 As shown, a construction method of an attached lifting scaffold based on a soft base surface comprises the following steps:

[0045] S1. Construction preparation;

[0046] Including material and equipment preparation, design and processing of force transmission parts 1, attachment of supports 2, and setting up of operating platform;

[0047] The force transmission member 1 comprises a force transmission steel plate 11 and force transmission legs 12. Two pairs of force transmission legs 12 are plug-welded and fixedly connected to the upper and lower ends of the back of the force transmission steel plate 11. A square hole 13 is provided in the center of the force transmission steel plate 11.

[0048] like Figure 5 As shown, the design and calculation of the force transmission member 1 is:

[0049] The most unfavorable load combination P = 2 (impact coefficient) × (1.3 × P 恒 +1.5×P 施 );

[0050] AB rod tension P AB =P×L AB / L BC；

[0051] The pressure of the force transmission part is N = 2 (impact coefficient) × P AB / 2;

[0052] Material preparation for force transmission part 1: L×D×10mm steel plate with a square hole in the middle (the width of the steel plate is determined according to the calculation of the deflection of the force transmission steel plate 11; the length of the steel plate is determined according to the length of the attachment support 2 and the spacing of the lead screw 22); A25 plain round steel bar, cut into h+20mm long steel bar heads, used as force transmission legs 12, after welding, the force transmission legs 12 are exposed h+10mm, and can be extended into the concrete 0~10mm according to actual conditions (h is the material layer thickness, and the leg length is determined according to the actual thickness of the weak material layer on site);

[0053] Processing of force transmission member 1: The force transmission steel plate 11 and the force transmission leg 12 are connected by plug welding. Clean the surface of the force transmission steel plate 11 and the force transmission leg 12. Figure 2 The square hole 13 at the center of the force transmission steel plate 11 is convenient for the lead screw 22 of the support 2 to pass through the force transmission member 1. The force transmission member 1 can be used cyclically, and the three-layer configuration can meet the construction needs.

[0054] The attachment support 2 includes a triangular support 21 and a screw 22. The upper and lower ends of the vertical side arms of the triangular support 21 are provided with through holes corresponding to the screw 22. The outer wall of the triangular support 21 away from the vertical side wall is sleeved with a lying U-shaped connector 23.

[0055] S2. According to the technical requirements of the plan layout, measure, lay out and locate to determine the starting position of the frame unit 3 of the scaffolding.

[0056] S3. Assemble the frame units 3 of the first step in the order of scaffolding arrangement on the ground. The span of frame unit 3 shall not be greater than three to avoid the frame being too heavy to be moved during hoisting and connection. Frame unit 3 is composed of the main frame (height 3.6m), bottom main board, bottom sub-board, flap, second main board, horizontal bar strip, diagonal bar, frame track, protective net, lower lifting seat and other components.

[0057] S4. According to the installation sequence of each rack unit 3 in the first step, the rack guide frame 4 is installed into the rack rail 31 of the rack unit 3 and temporarily fixed.

[0058] S5. Use lifting equipment to lift all assembled frame units 3 to the designed positions in the arrangement order and connect them into a whole, and make temporary tie-downs for the frame at the same time.

[0059] S6. Pre-embed the first pre-embedded pipe 5 attached to the support 2 according to the machine position determined by the plan layout.

[0060] S7, positioning and installing the force transmission member 1; comprising the following steps:

[0061] S71, laying out the wires, and measuring the center position of the force transmission leg 12 according to the position of the embedded pipe 5;

[0062] S72, drilling, use a drill bit with a diameter of R+2mm to drill holes at the marked positions, and the drilling depth is h~h+10mm; R is the diameter of the leg, and h is the thickness of the material layer;

[0063] S73, installation, two force transmission members 1 are installed at each attachment support 2, each force transmission member 1 corresponds to a lead screw 22, and the force transmission leg 21 is placed into the corresponding drilled hole. When the surface of the force transmission steel plate 11 is parallel to the concrete surface, and the force transmission leg 12 is in close contact with the concrete surface, the force transmission member 1 is installed in place;

[0064] S74. Check: Use a level to check the verticality of the force transmission member 1 and measure the height difference between adjacent force transmission members 1 in the same vertical plane.

[0065] S8. After connecting the frame guide frame 4 and the attachment support 2, install and fix the first attachment support 2, that is, pass the screw 22 through the through hole and the embedded pipe 5, set the pads 6 at both ends of the screw 22, and thread nuts at both ends of the screw 22, and fix them by tightening the nuts; the frame guide frame 4 is fixed to the connecting piece 23 by bolts.

[0066] S9. Install the adjustable top support and frame fall arrester on the frame unit 3 in place.

[0067] S10, flip the flap on the frame unit 3 to one side of the structure for protection, to ensure that the bottom of the frame and the structure are closed.

[0068] S11, according to the assembly sequence and construction method of the frame unit 3 in the first step of installation, subsequent installation construction is carried out; including the following steps:

[0069] S111, sequentially hoisting the frame units 3 of the second step, the third step and the fourth step;

[0070] S112, check the vertical deviation between the installation position of each layer of the force transmission member 1 and the previous layer, adjust the drilling depth of each layer, ensure that the vertical deviation of each layer of the force transmission member 1 is within the allowable range, and install the second and third layers of the force transmission member 1 in sequence;

[0071] S113, sequentially installing the second and third attachment supports 2 and the frame guide frame 4;

[0072] S114, installing the sub-plates and flaps on each shelf unit 3;

[0073] S115, installing the adjustable top support and frame anti-fall device on the frame unit 3 in place, adjusting them to the working state, and completing the overall unloading of the scaffold frame.

[0074] S12. Installation and debugging of the intelligent synchronous control lifting system; install the intelligent synchronous control main control cabinet and sub-control cabinet, sensors, cable circuit system, electric hoist, lower lifting seat, and upper hanging seat in place, power on and debug the circuit system, debug the electric hoist and pre-tighten it.

[0075] S13. Self-inspection, rectification and acceptance.

[0076] The present invention arranges an attachment support 2 and a force transmission member 1, and places the force transmission member 1 between the attachment support 2 and the concrete structure as a rigid support, thereby avoiding the removal and repair construction of weak materials on the concrete surface, reducing construction waste, and being green and energy-saving; reducing the removal and repair processes, and improving installation efficiency; the force transmission member is easy and quick to install, saving work hours; after the force transmission member 1 is installed, the force is clearly applied, and it is safe and reliable.

[0077] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] The above is an exemplary description of the present invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A construction method of an attached lifting scaffold based on a soft base surface, characterized in that: The following steps are involved: S1. Construction preparation; It includes material and equipment preparation, design and processing of force transmission parts (1), attachment of supports (2), and setting up of operating platforms; The force transmission member (1) comprises a force transmission steel plate (11) and force transmission legs (12), two pairs of force transmission legs (12) are plug-welded and fixedly connected to the upper and lower ends of the back of the force transmission steel plate (11), and a square hole (13) is provided in the center of the force transmission steel plate (11); The attachment support (2) comprises a triangular support (21) and a lead screw (22); the upper and lower ends of the vertical side arms of the triangular support (21) are provided with through holes corresponding to the lead screw (22); and a lying U-shaped connecting piece (23) is fixedly mounted on the outer wall of the triangular support (21) away from the vertical side wall; S2. According to the technical requirements of the plan layout, measure, lay out and locate to determine the starting position of the frame unit (3) of the scaffolding; S3, assembling the frame units (3) of the first step in sequence on the ground according to the arrangement order of the scaffolding, and the span number of the frame unit (3) shall not be greater than three to avoid the frame being too heavy to be moved during hoisting and connection; S4, according to the installation sequence of each frame unit (3) in the first step, the frame guide frame (4) is installed into the frame track (31) of the frame unit (3) and temporarily fixed; S5, using a lifting device to lift all the assembled frame units (3) to the designed positions in the arrangement order and connect them into a whole, and at the same time, temporarily tie the frame together; S6. Pre-buried the first pre-buried pipe (5) attached to the support (2) according to the position of the machine position determined by the plan layout; S7, positioning and installing the force transmission member (1); S8, after the frame guide frame (4) and the attachment support (2) are connected, the first attachment support (2) is installed and fixed, that is, the lead screw (22) is passed through the through hole and the embedded pipe (5), the backing plates (6) are sleeved at both ends of the lead screw (22), and nuts are threadedly connected at both ends of the lead screw (22), and fixed by tightening the nuts; S9, installing the adjustable top support and the frame anti-fall device on the frame unit (3) in place; S10, turning the flap on the frame unit (3) to one side of the structure for protection, ensuring that the bottom of the frame and the structure are sealed; S11, performing subsequent installation construction according to the assembly sequence and construction method of the frame unit (3) in the first step of installation; S12, installation and commissioning of intelligent synchronous control lifting system; S13. Self-inspection, rectification and acceptance.

2. The construction method of an attached lifting scaffold based on a soft base surface according to claim 1 is characterized in that: S7 includes the following steps: S71, laying out the wires, and measuring the center position of the force transmission leg (12) according to the position of the embedded pipe (5); S72, drilling, use a drill bit with a diameter of R+2mm to drill holes at the marked positions, and the drilling depth is h~h+10mm; R is the diameter of the leg, and h is the thickness of the material layer; S73, installation, two force transmission members (1) are installed at each attachment support (2), each force transmission member (1) corresponds to a lead screw (22), and the force transmission leg (21) is placed into the corresponding drilled hole. When the surface of the force transmission steel plate (11) is parallel to the concrete surface, and the force transmission leg (12) is in close contact with the concrete surface, the force transmission member (1) is installed in place; S74. Check: Use a level to check the verticality of the force transmission member (1), and measure the height difference between adjacent force transmission members (1) in the same vertical plane.

3. The construction method of an attached lifting scaffold based on a soft base surface according to claim 1 is characterized in that: In S8, the frame guide frame (4) is fixed to the connecting member (23) by means of bolts.

4. The construction method of an attached lifting scaffold based on a soft base surface according to claim 1 is characterized in that: S11 includes the following steps: S111, sequentially hoisting the frame units (3) of the second step, the third step and the fourth step; S112, check the vertical deviation between the installation position of each layer of force transmission members (1) and the previous layer, adjust the drilling depth of each layer, ensure that the vertical deviation of each layer of force transmission members (1) is within the allowable range, and install the second and third layers of force transmission members (1) in sequence; S113, sequentially installing the second and third attachment supports (2) and the frame guide frame (4); S114, installing the sub-plates and flaps on each shelf unit (3); S115, installing the adjustable top support and frame anti-fall device on the frame unit (3) in place, adjusting them to the working state, and completing the overall unloading of the scaffold frame.

5. The construction method of an attached lifting scaffold based on a soft base surface according to claim 1 is characterized in that: In S12, the intelligent synchronous control main control cabinet and sub-control cabinet, sensors, cable circuit system, electric hoist, lower hoist seat, and upper hanging seat are installed in place, the circuit system is powered on for debugging, and the electric hoist is debugged and pre-tightened.

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