Mounting method and dismounting method for internal construction platform of silo

Abstract

The invention discloses a mounting method and a dismounting method for a construction platform in a silo. The mounting method comprises the following steps: digging an embedding hole in the top of a silo wall, and mounting a steel corbel; a steel truss platform assembly is installed on a bottom plate of the silo; the steel truss platform assembly is integrally suspended and lifted by connecting a tower crane with a sling, and a bracket is mounted at the lower end of a beam column on a bottom plate; continuing to integrally suspend and lift, and mounting a standard knot at the lower end of the bracket on the bottom plate; integrally suspending and lifting once repeatedly, and installing a standard knot; the steel truss platform assembly is lifted to the preset elevation position of the top of the silo, a hydraulic oil cylinder is controlled to stretch out and draw back to rotate the steel truss platform assembly on the horizontal plane, so that the radiation beams of the steel truss platform are aligned to the embedding holes in the silo wall and are inserted and installed through bolts, and the lower end of a center stand column is fixed to a bottom plate; and removing the sling. According to the invention, the installation difficulty is reduced, the installation efficiency and convenience are improved, the construction safety is guaranteed, and the safety risks of high-altitude falling and object falling are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an installation method and a dismantling method of a construction platform inside a silo. Background Art

[0002] The silo internal construction support platform is an operating platform for silo construction and maintenance. It includes a central column and a steel truss platform connected to it. During the construction process of the silo roof, the construction platform in this field usually installs multiple standard sections from bottom to top in the silo to form a central column, and then installs the steel truss platform on the central column. After the silo roof is constructed, the internal construction platform of the silo is dismantled according to the reverse steps of the installation. The installation and dismantling of the central column and the steel truss platform are all high-altitude operations. The installers are at risk of falling from height, and the assembly parts and tools of the platform have safety hazards of falling objects from height. The steel truss platform has the cross-sectional shape of the silo and has many installation parts. When installing or dismantling at high altitude, the construction is difficult and the efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to provide an installation method and a dismantling method for a silo internal construction platform to solve the problems of safety risks of falling from high altitude and falling objects from high altitude, great construction difficulty and low efficiency when installing or dismantling a traditional silo internal construction platform in a high-altitude environment.

[0004] In order to solve the above technical problems, the present invention provides a method for installing a construction platform inside a silo, comprising: Step S1, after the silo wall construction is completed, a buried hole is dug at a predetermined elevation position on the top of the silo wall, and a steel bracket is installed at a horizontally staggered position of a cross position of the silo wall; Step S2, placing beams and columns at the center of the bottom plate of the silo, assembling a steel truss platform on the beams and columns on the bottom plate, installing radially distributed multi-layer diagonal braces between the steel truss platform and the beams and columns on the bottom plate, so that the steel truss platform, the beams and columns and the diagonal braces form a steel truss platform assembly, wherein the steel truss platform includes a plurality of radial beams and a plurality of ring beams thereon, and four hydraulic cylinders installed at the ends of four cross-intersecting radial beams of the steel truss platform on the same horizontal plane; Step S3, connecting a plurality of slings on the steel truss platform in a dispersed manner, and suspending and lifting the steel truss platform assembly as a whole through a tower crane to connect the slings, so that the suspended distance between the lower end of the steel truss platform assembly and the bottom plate is greater than or equal to the height of the bracket of the central column, and the bracket is installed on the bottom plate at the lower end of the beam column, wherein the central column includes a plurality of standard sections and brackets; Step S4, using a tower crane to control the sling to hoist the steel truss platform assembly and the bracket connected thereto as a whole, so that the suspended distance between the lower end of the bracket and the bottom plate is greater than or equal to the height of a standard section of the central column, and a standard section is installed on the bottom plate at the lower end of the bracket; Step S5, using a tower crane to hoist the control cable steel truss platform assembly and its connected brackets and standard sections as a whole, so that the suspended distance between the standard section at the lowest end and the bottom plate is greater than or equal to the height of one standard section, and the next standard section is installed on the bottom plate at the lower end of the standard section in the suspended state; Step S6, repeating step S5 until the steel truss platform assembly is lifted to the predetermined elevation position on the top of the silo, so that the installed standard section and bracket form a central column, the hydraulic cylinder on the steel truss platform is detachably connected to the steel bracket on the silo wall, the four hydraulic cylinders are controlled to extend and retract to rotate the steel truss platform assembly on a horizontal plane with the central column as the center, so that the radial beams of the steel truss platform are aligned with the embedded holes in the silo wall, the radial beams of the steel truss platform are inserted into the corresponding embedded holes through the latch, the lower end of the central column is fixed on the bottom plate, and the load of the steel truss platform is transferred to the central column; Step S7, dismantle the slings to install the construction platform inside the silo.

[0005] Furthermore, in the method for installing the internal construction platform of the silo provided by the present invention, the beam column is composed of a plurality of vertical steel members distributed in a circular array and a plurality of inner hoop reinforcements and outer hoop reinforcements surrounding the inner and outer sides thereof.

[0006] Furthermore, the present invention provides a method for installing a construction platform inside a silo, wherein the bracket includes a tubular body and a plurality of supporting brackets uniformly arranged on its outer contour and in the same horizontal plane, the periphery of the supporting bracket is connected to an annular supporting beam, and the supporting beam is detachably connected to the beam column.

[0007] Furthermore, the present invention provides a method for installing a construction platform inside a silo, wherein the standard section is a tubular body or a frame body with flanges at both ends, and adjacent standard sections are detachably connected by high-strength bolts.

[0008] Furthermore, in the method for installing the internal construction platform of the silo provided by the present invention, in step S6, when there is a gap between the lowest standard section of the central column and the bottom plate, a cushion layer is installed between the lowest standard section of the central column and the bottom plate, and a diagonal brace is installed between the central column and the cushion layer.

[0009] Furthermore, in the method for installing the internal construction platform of the silo provided by the present invention, the cushion layer is a steel frame or a concrete block fixed on the bottom plate.

[0010] In order to solve the above technical problems, the present invention also provides a method for dismantling a construction platform inside a silo, comprising: Step S8, a plurality of winches are dispersedly installed on the roof of the constructed silo, the cables of each winch are passed through the roof and connected to the steel truss platform of the internal construction platform of the silo, and the load of the internal construction platform of the silo is transferred and applied to the winch; Step S9, enter the steel truss platform through the ladder from the opening on the silo roof, pull out the pins in the embedded holes of the silo wall, release the constraints between the radial beam of the steel truss platform and the silo wall, and remove the steel bracket; Step S10, remove the last standard section on the center column located on the bottom plate of the silo, and use a winch to control the cable release to suspend and lower the steel truss platform assembly and the unremoved center column connected to it as a whole, so that the lower end of the unremoved center column falls in contact with or hangs close to the bottom plate, and the standard section in contact with or hangs close to the bottom plate is used as the last standard section; Step S11, repeating step S10 until all standard sections of the central column are removed on the floor; Step S12, controlling the cable release by the winch to suspend the steel truss platform assembly and the central column bracket connected thereto and drop them to contact or suspend them close to the bottom plate, and then remove the bracket on the floor; Step S13, controlling the cable release by the winch to drop the steel truss platform assembly, so that the beam column contacts the bottom plate, transferring the load of the steel truss platform assembly to the bottom plate, disconnecting each cable from the steel truss platform, dismantling the steel truss platform assembly on the bottom plate and removing it from the silo; Step S14, controlling the cable winding by the winch, removing the winch on the silo top, and realizing the dismantling construction of the construction platform inside the silo.

[0011] Furthermore, in the method for dismantling the internal construction platform of the silo provided by the present invention, in step S10, when the standard section of the central column is connected with a cushion layer and a diagonal brace, the diagonal brace and the cushion layer are first dismantled, and then the last standard section is dismantled.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method for installing a construction platform inside a silo. Construction workers can install a steel truss platform assembly on the bottom plate of the silo, and control the slings by a tower crane to suspend the steel truss platform assembly as a whole and lift it to a certain height. Construction workers can install a bracket of a center column and install standard sections one by one on the bottom plate of the silo, and install a bracket, a standard section and other structural components once, thereby installing the center column on the bottom plate, so that the steel truss platform assembly, the center column and other structural components of the construction platform inside the silo are all installed and constructed on the bottom plate of the silo, reducing the difficulty and convenience of installing the steel truss platform assembly and the center column, improving the installation efficiency, ensuring the construction safety, avoiding the safety risk of construction workers falling from a high altitude in the bottom-up installation method of the construction platform inside the silo in a high-altitude environment, and the safety risk of structural components and tools of the construction platform inside the silo falling from a high altitude, thereby reducing the probability of safety accidents occurring during the installation process.

[0013] The present invention provides a method for dismantling a construction platform inside a silo, which transfers the load of the construction platform inside the silo to the winch by installing a winch on the roof of the constructed silo and connecting the steel truss platform assembly through the cable of the winch; the construction workers can dismantle a standard section of a central column at the bottom plate of the silo, and suspend and lower the steel truss platform assembly and the undismantled central column connected to it once as a whole, and by repeatedly dismantling a standard section at the bottom plate and controlling the suspension and lowering of the undismantled part once, all standard sections of the central column are dismantled from the bottom plate of the silo, and in the same way, after dismantling the bracket of the central column, the winch is used to control the cable to release the steel truss platform assembly. When the silo is lifted to the bottom plate, the construction workers can complete the dismantling of the steel truss platform components on the bottom plate, so that the steel truss platform components, center columns and other structural components of the silo's internal construction platform can all be dismantled on the bottom plate of the silo, without the need to set up scaffolding to dismantle the silo's internal construction platform from top to bottom, thereby reducing the difficulty and convenience of dismantling the steel truss platform components, center columns and other structural components of the silo's internal construction platform, improving the dismantling efficiency, ensuring construction safety, and avoiding the safety risk of construction workers falling from high altitudes during the dismantling method of the silo's internal construction platform in a high-altitude environment, as well as the safety risk of falling objects from high altitudes for the structural components and tools of the silo's internal construction platform. It also reduces the probability of safety accidents during the dismantling process, and facilitates the removal and transportation of scattered components of the structural components of the silo's internal construction platform from the silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the planar structure of fixing the steel truss platform assembly on the silo wall in the installation method of the internal construction platform of the silo; Figures 2 to 6It is a schematic diagram of the elevation structure during the installation process of the construction platform inside the silo; Figure 7 yes Figure 6 The enlarged view of point A in the middle; Figure 8 It is a schematic diagram of the elevation structure of the silo roof formwork system built on the internal construction platform of the installed silo; Figures 9 to 13 It is a schematic diagram of the elevation structure during the dismantling process of the construction platform inside the silo; As shown in the figure: 100. Construction platform inside silo; 110. Steel truss platform assembly, 111. Steel truss platform, 111-1. Radial beam, 111-2. Ring beam, 111-3. Hydraulic cylinder, 111-4. Latch, 112. Beam column, 112-1. Vertical steel parts, 112-2. Inner hoop reinforcement, 112-3. Outer hoop reinforcement, 113. Diagonal brace, 120. Center column, 121. Bracket, 121-1. Tubular part, 121-2. Supporting corbel, 121-3. Joist, 122. Standard section, 130. Cushion, 140. Diagonal stay; 200, silo, 201, bottom plate, 202, silo wall, 203, silo roof; 300, steel corbel; 400, sling; 500. Silo roof formwork system; 600, winch, 601, cable; 701. Opening. 702. Ladder. 703. Safety rope. 704. Construction workers. DETAILED DESCRIPTION

[0015] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0016] Embodiment 1

[0017] The embodiment of the present invention provides a method for installing a construction platform 100 inside a silo, comprising: Step S1, please refer to Figure 2 and Fig.13 After the construction of the silo wall 202 of the silo 200 is completed, an embedding hole (not shown) is dug at a predetermined elevation position on the top of the silo wall 202 , and a steel bracket 300 is installed at a horizontally staggered position of the cross position of the silo wall 202 .

[0018] Step S2, please refer to Figure 1 , Figure 2 and Figure 7 , a beam column 112 is placed at the center of the bottom plate 201 of the silo 200, a steel truss platform 111 is assembled on the beam column 112 on the bottom plate 201, and a radially distributed multi-layer diagonal brace 113 is installed between the steel truss platform 111 and the beam column 112 on the bottom plate 201, so that the steel truss platform 111, the beam column 112 and the diagonal brace 113 form a steel truss platform assembly 110, wherein the steel truss platform 111 includes a plurality of radial beams 111-1 and a plurality of ring beams 111-2 thereon, and four hydraulic cylinders 111-3 installed at the ends of the four cross-intersecting radial beams 111-1 of the steel truss platform 111 in the same horizontal plane, and may also include a pin 111-4 detachably connected or telescopically connected to at least part of the radial beams 111-1. The diagonal braces 113 in the figure illustrate a three-layer structure, with multiple evenly distributed diagonal braces 113 on each layer, which can achieve the tensile force on the steel truss platform 111 and ensure the stability of the steel truss platform 111. The beam column 112 is composed of multiple vertical steel pieces 112-1 distributed in a circular array and multiple inner ring hoops 112-2 and outer ring hoops 112-3 surrounding them. At this time, the diagonal brace 113 can be hingedly connected to the outer ring hoops 112-3. The beam column 112 of this structure has low cost. Of course, the structure of the beam column 112 is not limited to this, and it can also be a steel pipe with an ear plate, etc. At this time, the diagonal brace 113 can be hingedly connected to the ear plate.

[0019] Step S3, please refer to Figure 2 , multiple slings 400 are dispersedly connected on the steel truss platform 111, and the slings 400 are connected by a tower crane (not shown) or other lifting equipment to suspend and lift the steel truss platform assembly 110 as a whole, so that the suspended distance between the lower end of the steel truss platform assembly 110 and the bottom plate 201 is greater than or equal to the height of the bracket 121 of the central column 120, and the bracket 121 is installed on the lower end of the beam column 112 on the bottom plate 201, wherein the central column 120 includes multiple standard sections 122 and brackets 121. In order to improve the strength of the connection, the standard sections 122, the standard sections 122 and the bracket 121, and the bracket 121 and the beam column 112 can be detachably connected by high-strength bolts. The bracket 121 includes a tubular body 121-1 with the same diameter or cross-sectional size as the standard section 122 and multiple support brackets 121-2 uniformly arranged on the outer contour and in the same horizontal plane. The outer periphery of the support bracket 121-2 is connected with an annular support beam 121-3, and the support beam 121-3 can be detachably connected to the beam column 112 by fasteners such as high-strength bolts. The bracket 121 can realize the transition connection between the standard section 122 and the beam column 112, and ensure the reliability of the connection between the standard section 122 and the beam column 112. The standard section 122 is a steel pipe or frame with flanges at both ends.

[0020] Step S4, please refer to Figure 4The steel truss platform assembly 110 and the bracket 121 connected thereto are hoisted and lifted as a whole by controlling the sling 400 through the tower crane, so that the suspended distance between the lower end of the bracket 121 and the base plate 201 is greater than or equal to the height of a standard section 122 of the central column 120, and a standard section 122 is installed at the lower end of the bracket 121 on the base plate 201.

[0021] Step S5, please refer to Figure 5 , the control sling 400 steel truss platform assembly 110 and the connected bracket 121 and standard section 122 are hoisted and lifted as a whole by a tower crane, so that the suspended distance between the standard section 122 at the lowest end and the bottom plate 201 is greater than or equal to the height of one standard section 122, and the next standard section 122 is installed on the bottom plate 201 at the lower end of the standard section 122 in the suspended state; Step S6, please refer to Figure 1 , Figures 5 to 7 Repeat step S5 until the steel truss platform assembly 110 is lifted to the predetermined elevation position on the top of the silo 200, so that the installed standard section 122 and the bracket 121 form a central column 120, and the hydraulic cylinder 111-3 on the steel truss platform 111 is detachably connected to the steel bracket 300 on the silo wall 202 through fasteners with high-strength bolts, and the four hydraulic cylinders 111-3 are controlled to extend and retract to lift the steel truss platform assembly 110 around the central column 120. The horizontal plane is rotated clockwise or counterclockwise to align the radial beam 111-1 of the steel truss platform 111 with the embedded hole in the silo wall 202, and the radial beam 111-1 of the steel truss platform 111 is inserted into the corresponding embedded hole through the latch 111-4 to achieve the fixed connection between the steel truss platform 111 and the silo wall 202, and the lower end of the central column 120 is fixed on the bottom plate 201, and the load of the steel truss platform 111 is transferred to the central column 120. In order to improve the reliability and stability of the installation of the construction platform 100 inside the silo, in step S6, when there is a gap between the lowest standard section 122 of the central column 120 and the bottom plate 201, a cushion layer 130 is installed between the lowest standard section 122 of the central column 120 and the bottom plate 201, and a diagonal brace 140 is installed between the central column 120 and the cushion layer 130. The cushion layer 130 may be a steel frame or a concrete block fixed on the bottom plate 201 .

[0022] Step S7, please refer to Figure 6 , remove the sling 400 and install the construction platform 100 inside the silo.

[0023] Please refer to Figures 8 to 9 By building a silo roof formwork system 500 on the internal construction platform 100 of the silo, the construction of the silo roof 203 can be achieved.

[0024] The embodiment of the present invention provides a method for installing a construction platform 100 inside a silo. The construction workers can install a steel truss platform assembly 110 on the bottom plate 201 of the silo 200, and use a tower crane to control the sling 400 to hoist the steel truss platform assembly 110 to a certain height. The construction workers can install a bracket 121 of a center column 120 and install standard sections 122 one by one on the bottom plate 201 of the silo 200. The construction workers can install a bracket 121, a standard section 122 and other structural components one by one, thereby installing the center column 120 on the bottom plate 201, so that the inside of the silo can be The steel truss platform assembly 110, the center column 120 and other structural components of the construction platform 100 are all installed and constructed on the bottom plate 201 of the silo 200, which reduces the difficulty and convenience of installing the steel truss platform assembly 110 and the center column 120, improves the installation efficiency, ensures construction safety, avoids the safety risk of construction workers falling from a high altitude when installing the construction platform 100 inside the silo from bottom to top in a high-altitude environment, and the safety risk of falling objects from a high altitude when the structural components and tools of the construction platform 100 inside the silo are installed, and reduces the probability of safety accidents during the installation process.

[0025] Embodiment 2

[0026] Embodiment 2 of the present invention provides a method for dismantling a construction platform 100 inside a silo, comprising: Step S8, please refer to Fig. 9 A plurality of winches 600 are dispersedly installed on the roof of the constructed silo 200, and the cables 601 of each winch 600 are passed through the silo roof 203 and connected to the steel truss platform 111 of the internal construction platform 100 of the silo, so that the load of the internal construction platform 100 of the silo is transferred and applied to the winch 600.

[0027] Step S9, please refer to Figure 7 and Fig. 9 , the construction worker 704 can enter the steel truss platform 111 through the ladder 702 from the opening 701 of the silo roof 203, pull out the pin 111-4 in the embedded hole of the silo wall 202 of the silo 200, release the constraint between the radial beam 111-1 of the steel truss platform 111 and the silo wall 202, remove the steel bracket 300, and separate the steel truss platform 111 from the silo wall 202. After executing this step S9, the ladder 702 needs to be removed and the opening 701 needs to be blocked. In order to ensure the safety of the construction workers on the steel truss platform 111, they need to wear a safety rope.

[0028] Step S10, please refer to Figures 9 to 11, remove the last standard section 122 on the center column 120 located on the bottom plate 201 of the silo 200, and use the winch 600 to control the cable 601 to release the steel truss platform assembly 110 and the unremoved center column 120 connected thereto to be suspended and lowered as a whole, so that the lower end of the unremoved center column 120 falls in contact with or is suspended close to the bottom plate 201, and the standard section 122 in contact with or is suspended close to the bottom plate 201 is used as the last standard section 122. In step S10, when the standard section 122 of the center column 120 is connected to the cushion layer 130 and the inclined brace 140, the inclined brace 140 and the cushion layer 130 are removed first, and then the last standard section 122 is removed.

[0029] Step S11, please refer to Figure 10 to Figure 11 , repeat step S10 until all standard sections 122 of the central column 120 are removed on the floor.

[0030] Step S12, please refer to Figure 11 to Figure 12 The winch 600 controls the cable 601 to release the steel truss platform assembly 110 and the central column 120 and the bracket 121 connected thereto to be suspended and dropped to contact or be suspended close to the bottom plate 201, and the bracket 121 is removed on the floor.

[0031] Step S13, please refer to Figure 12 to Figure 13 , the winch 600 controls the cable 601 to release the steel truss platform assembly 110, so that the beam column 112 contacts the bottom plate 201, and the load of the steel truss platform assembly 110 is transferred to the bottom plate 201, and the connection between each cable 601 and the steel truss platform 111 is disconnected, and the steel truss platform assembly 110 is dismantled on the bottom plate 201 and removed from the silo 200; Step S14, please refer to Fig.13 The winch 600 is used to control the cable 601 to be reeled in, and the winch 600 on the silo roof 203 is removed to realize the dismantling construction of the construction platform 100 inside the silo.

[0032] The embodiment of the present invention provides a method for dismantling a construction platform 100 inside a silo. The method comprises installing a winch 600 on the roof 203 of the constructed silo 200, connecting the steel truss platform assembly 110 through the cable 601 of the winch 600, and transferring the load of the construction platform 100 inside the silo to the winch 600. The construction workers can dismantle a standard section 122 of a central column 120 at the bottom plate 201 of the silo 200, and suspend and lower the steel truss platform assembly 110 and the connected undismantled central column 120 as a whole once, and dismantle all standard sections 122 of the central column 120 from the bottom plate 201 of the silo 200 by repeatedly dismantling a standard section 122 at the bottom plate 201 and controlling the suspension and lowering of the undismantled part once. In the same way, after dismantling the bracket 121 of the central column 120, the winch 600 is used to control the pulling cable 601. The cable 601 is released to drop the steel truss platform assembly 110 onto the bottom plate 201, and the construction workers can complete the dismantling of the steel truss platform assembly 110 on the bottom plate 201, so that the steel truss platform assembly 110, the center column 120 and other structural components of the silo internal construction platform 100 are all dismantled on the bottom plate 201 of the silo 200. There is no need to set up scaffolding to dismantle the silo internal construction platform 100 from top to bottom, thereby reducing the difficulty and convenience of dismantling the steel truss platform assembly 110, the center column 120 and other structural components of the silo internal construction platform 100, improving the dismantling efficiency, ensuring construction safety, and avoiding the safety risk of construction workers falling from a high altitude during the dismantling method of the silo internal construction platform 100 in a high-altitude environment, and the safety risk of structural components and tools of the silo internal construction platform 100 falling from a high altitude. It also reduces the probability of safety accidents during the dismantling process, and facilitates the removal and transportation of scattered components of the structural components of the construction platform 100 inside the silo from the silo 200.

[0033] The installation and removal methods of the silo internal construction platform 100 provided in Embodiment 1 and Embodiment 2 of the present invention solve the problem that the safety of construction workers cannot be guaranteed due to the lack of a standing platform during the installation and removal of the silo internal construction platform 100, thereby reducing or even avoiding the safety risk of falling from heights.

[0034] The installation and dismantling methods of the silo internal construction platform 100 provided in the first and second embodiments of the present invention, the installation and dismantling methods of the silo internal construction platform 100 provided in the first and second embodiments of the present invention, the steel truss platform assembly 110, the center column 120 and other structural components of the silo internal construction platform 100 can be installed and dismantled at the bottom plate of the silo, and are suitable for the construction of the silo 200; the dismantling method of the silo internal construction platform 100 provided in the second embodiment of the present invention is also suitable for the inspection and maintenance construction of the silo 200.

[0035] According to the installation and removal methods of the internal construction platform 100 of the silo provided in the first and second embodiments of the present invention, during the process of installing or removing the standard sections 122 section by section, when the height of the standard sections 122 and the steel truss platform assembly 110 is greater than the height of the construction workers, a scaffolding less than the height of one standard section 122 and the steel truss platform assembly 110 can be built on the bottom plate 201, without the need to build the scaffolding along the bottom plate 201 all the way up to the top of the silo wall 202 close to the height of the steel truss platform assembly 110, thereby reducing or even avoiding the safety risks of falling objects from height.

[0036] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A method for installing a construction platform inside a silo, characterized in that: include: Step S1, digging a buried hole on the top of the warehouse wall and installing four steel brackets; Step S2, assembling the steel truss platform assembly on the bottom plate; Step S3, the steel truss platform assembly is hoisted and lifted as a whole by connecting the slings with the tower crane, and the bracket of the central column is installed at the lower end of the steel truss platform assembly on the bottom plate; Step S4, using a tower crane to control the sling to hoist the steel truss platform assembly and the bracket connected to it as a whole, and installing a standard section of the center column at the lower end of the bracket on the bottom plate; Step S5, hoisting the control cable steel truss platform assembly and its connected brackets and standard sections as a whole by a tower crane, and installing the next standard section of the center column on the bottom plate at the lower end of the standard section in a suspended state; Step S6, repeating step S5 until the steel truss platform assembly is lifted to a predetermined elevation position on the top of the silo, aligning the steel truss platform assembly with the embedded hole of the silo wall, fixing the lower end of the center column on the bottom plate, so that the load of the steel truss platform is transferred to the center column; Step S7, removing the sling.

2. The method for installing the internal construction platform of the silo according to claim 1, characterized in that: The method for assembling the steel truss platform assembly on the bottom plate comprises: Beams and columns are placed at the center of the bottom plate of the silo, a steel truss platform is assembled on the beams and columns on the bottom plate, and radially distributed multi-layer diagonal braces are installed between the steel truss platform and the beams and columns on the bottom plate, so that the steel truss platform, the beams and columns and the diagonal braces form a steel truss platform assembly, wherein the steel truss platform includes a plurality of radial beams and a plurality of ring beams thereon, and four hydraulic cylinders installed at the ends of four cross-intersecting radial beams of the steel truss platform on the same horizontal plane.

3. The method for installing the internal construction platform of the silo according to claim 1, characterized in that: The beam column is composed of a plurality of vertical steel members distributed in a circular array and a plurality of inner ring stirrups and outer ring stirrups surrounding the inner and outer sides thereof.

4. The method for installing the internal construction platform of the silo according to claim 1, characterized in that: The bracket comprises a tubular body and a plurality of supporting brackets evenly arranged on the outer contour thereof and located in the same horizontal plane. The outer periphery of the supporting bracket is connected with an annular supporting beam, and the supporting beam is detachably connected to the beam column.

5. The method for installing the internal construction platform of the silo according to claim 1, characterized in that: In step S6, when there is a gap between the lowest standard section of the central column and the bottom plate, a cushion layer is installed between the lowest standard section of the central column and the bottom plate, and a diagonal brace is installed between the central column and the cushion layer.

6. The method for installing the internal construction platform of the silo according to claim 5, characterized in that: The cushion layer is a steel frame or a concrete block fixed on the bottom plate.

7. A method for dismantling a construction platform inside a silo, characterized in that: include: Step S8, installing multiple winches on the roof of the constructed silo, passing the cables of each winch through the roof and connecting them to the steel truss platform assembly of the internal construction platform of the silo, and controlling the cable tensioning by the winch to transfer the load of the internal construction platform of the silo to the winch; Step S9, disconnecting the steel truss platform assembly from the warehouse wall and removing the steel bracket; Step S10, remove the last standard section on the center column located on the bottom plate of the silo, and use a winch to control the cable release to suspend and lower the steel truss platform assembly and the unremoved center column connected to it as a whole, so that the lower end of the unremoved center column falls in contact with or hangs close to the bottom plate, and the standard section in contact with or hangs close to the bottom plate is used as the last standard section; Step S11, repeating step S10 until all standard sections of the central column are removed on the floor; Step S12, controlling the cable release by the winch to suspend the steel truss platform assembly and the central column bracket connected thereto and drop them to contact or suspend them close to the bottom plate, and then remove the bracket on the floor; Step S13, controlling the cable release by a winch to lower the steel truss platform assembly, transferring the load of the steel truss platform assembly to the bottom plate, disconnecting each cable from the steel truss platform, dismantling the steel truss platform assembly on the bottom plate and removing it from the silo; Step S14, controlling the cable winding by the winch, removing the winch on the silo top, and realizing the dismantling construction of the construction platform inside the silo.

8. The method for dismantling the internal construction platform of a silo according to claim 7, characterized in that: In step S10, when the standard section of the central column is connected with a cushion layer and a diagonal brace, the diagonal brace and the cushion layer are first removed, and then the last standard section is removed.

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