A scaffold-based installation structure of a radiation-proof iron block wall surface and a construction method thereof

Abstract

The application provides a scaffold-based installation method and installation structure of an ultra-thick radiation-proof iron block wall surface, wherein the radiation-proof iron block is installed in a variable cross-section structure with a foundation height difference change arranged in a foundation pit, and the installation structure comprises a leveling base structure and a scaffold-type auxiliary positioning structure; the radiation-proof iron block is designed as a multi-layered steel plate wall, each layer of the steel plate wall comprises a plurality of assembled steel plates fixed by welding, the assembled steel plates can be stably embedded and installed in positioning grooves of the leveling base, and the positioning and leveling installation of the assembled steel plates are assisted by a length-adjustable rod and a force clamping plate at the end of the rod in the scaffold-type auxiliary positioning structure. The whole construction structure is designed ingeniously, so that the construction method is not only safe and reliable, simple and convenient to operate, but also has strong construction applicability.

Description

Technical Field

[0001] This invention relates to the field of construction of ultra-thick steel plates for radiation protection in buildings, and specifically to an installation structure and construction method for a radiation-proof iron block wall based on scaffolding. Background Technology

[0002] With the rapid development of heavy ion technology in the medical field, the resulting radioactive pollution and radiation damage can no longer be ignored. People may not be aware of the radiation around them, but it is actually everywhere. In specialized hospitals treating tumors with heavy ion therapy, there is a significant amount of ion radiation. To prevent leakage of ion radiation during treatment, the walls of the heavy ion area are designed with ultra-thick steel plate radiation shielding structures. Because the ultra-thick steel plates installed in these radiation shielding walls are generally enormous in size and tonnage, they typically consist of three sets of large steel plates with different cross-sections tightly fitted together (each 17.69m long, 0.5m thick, and 4m, 5m, and 8.5m high; totaling 1215t, details below). Figure 11 and Figure 12 Therefore, the installation of steel plates within this type of radiation-proof wall presents the following challenges: 1. Very few steel plates on the market are thicker than 5cm, limiting construction to commonly available steel plate specifications; 2. The installation volume is large, requiring reasonable disassembly for ease of hoisting and transportation; 3. During disassembly, seamless splicing is necessary to meet radiation protection requirements; 4. High standards are required for assembly, necessitating control over the overall verticality and horizontality after splicing, and ensuring reasonable gap sizes between splices; 5. Reliable implementation is required, ensuring the stability, sturdiness, and radiation protection of the assembled steel plates while maintaining corresponding construction efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a radiation-shielding iron block installation structure and its construction method based on scaffolding. This structure is not only safe and reliable to construct, but also simple and convenient to operate, and highly applicable; similar structures can also refer to the construction method of this invention. To solve the above-mentioned technical problems, this invention adopts the following technical solution:

[0004] This invention provides an installation structure for an ultra-thick radiation-proof iron block wall based on scaffolding. The installation structure includes a leveling base structure and a scaffolding-type auxiliary positioning structure. The leveling base structure includes a concrete base and a base plate. The upper surface of the base plate has multiple raised ribs of equal width and equidistant arrangement. All raised ribs extend from one edge of the base plate to the other edge in a straight line. The grooves between the raised ribs are of equal depth. The base plate is mounted on a lifting mechanism installed on the concrete base. The lifting mechanism is used to keep the base plate level. The scaffolding-type auxiliary positioning structure includes scaffolding symmetrically arranged on both sides of the leveling base structure. The bottom ends of the scaffolding on both sides of the base plate are located between the bottom ends of the scaffolding. Multiple sets of adjusting screws are symmetrically distributed in the scaffolding frame on both sides. Two symmetrical adjusting screws form a pair that can move towards each other in a straight line perpendicular to the raised ribs relative to the frame. A force-bearing clamp is installed at the end of the pair of adjusting screws that are close to each other.

[0005] Furthermore, the bottom surface of the base plate is provided with a steel frame perpendicular to the raised ribs. The steel frame is installed on the lifting mechanism of the concrete base. The two ends of the steel frame extend out of the base plate. The steel frame consists of multiple parallel and spaced load-bearing square steel bars evenly arranged on the concrete base. Each load-bearing square steel bar has pre-drilled bolt holes at both ends. The concrete base has corresponding through holes. The bolt holes of the load-bearing square steel bars are aligned with the through holes. The lifting mechanism includes a leveling nut pre-embedded in the through holes and a leveling bolt passing through the bolt holes and the leveling nut. Tightening the leveling bolt causes the load-bearing square steel bars to move up and down, which is used to adjust the levelness of the load-bearing square steel bars. Each raised rib has a U-shaped channel steel pre-embedded in it. The U-shaped channel steel bars are fixed to the load-bearing square steel bars by welding.

[0006] Furthermore, multiple load-bearing members that cooperate with adjusting screws are fixed inside the scaffold frame. The load-bearing members are horizontally arranged inside the scaffold frame, with their length direction perpendicular to the U-shaped channel steel. The load-bearing members are fixedly connected to the frame body using connecting fasteners. Adjusting nuts are welded to both ends of the load-bearing members. After the adjusting screw is threadedly connected to the adjusting nut, it passes through the inside of the load-bearing member and extends out. A load-bearing clamp is welded to the end of the adjusting screw after it extends out, and the surface of the load-bearing clamp is perpendicular to the length direction of the adjusting screw. Rotating the adjusting screw can adjust the length of the adjusting screw extending relative to the load-bearing member. The distance between the two sides of the scaffold is greater than the length between the leveling bolts at both ends of the load-bearing square steel.

[0007] Furthermore, the length of the U-shaped channel steel is greater than the horizontal length of the iron block wall.

[0008] This invention also provides an installation method for installing an ultra-thick radiation-proof iron block wall using an installation structure based on scaffolding, which includes the following steps:

[0009] Step 1: Hoist the assembled steel plate between the protruding ribs in the leveling base structure, and position it near the middle of one of the protruding ribs. According to the height of the assembled steel plate, select multiple pairs of adjusting screws at a medium-high position in the scaffold-type auxiliary positioning structure, and bring the force-bearing plates at the ends of the multiple pairs of adjusting screws close to the assembled steel plate, clamping both sides of the assembled steel plate so that it is perpendicular to the plane composed of the force-bearing square steel. The force-bearing square steel has been pre-adjusted to be horizontal.

[0010] Step 2: Install the next assembly steel plate on the top and left and right sides of the assembly steel plate that has been adjusted to a vertical position, and align and adjust the assembly steel plate to a vertical position. Weld the beveled joints between adjacent assembly steel plates using short welds until the assembly steel plates form a wall with a height of at least two layers, which serves as the leveling base surface.

[0011] Step 3: Attach the assembly steel plate to be leveled to one side of the leveling base. The horizontal seams of the assembly steel plate to be leveled and the assembly steel plate on the leveling base are staggered. Arrange L-shaped wedge plates at intervals along at least two edges of the assembly steel plate to be leveled. Weld one end of the wedge plate to the leveling base. Embed the wedge block between the other end of the wedge plate and the leveling base. Squeeze the gap between the assembly steel plate to be leveled and the leveling base from all sides of the assembly steel plate to adjust the flatness of the assembly steel plate itself.

[0012] Step 4: After the assembled steel plate is leveled, remove the spot welds between the wedge plates on the left and right sides and the leveling base surface. Weld force-bearing lugs that are separated from the wedge plates on the surface near the upper side. Install a hydraulic jack between the wedge plates and the force-bearing lugs. The hydraulic jack extends and pushes the leveled assembled steel plate to move horizontally, so that the left and right edges of the leveled assembled steel plate are staggered from the vertical seams of the assembled steel plate in the leveling base surface.

[0013] Step 5: Then weld and fix the assembled steel plate after translation to the leveling base surface, and remove the surrounding wedge plates, force-bearing lugs, and hydraulic jacks;

[0014] Step 6: Then repeat steps 3 to 5 above. Install other assembled steel plates around the assembled steel plate that was fixed in step 5. Finally, bevel the adjacent assembled steel plates and weld them together with short welds until the iron block wall formed by attaching multiple layers of assembled steel plates to the front and back of the leveled base surface in step 2 reaches the designed thickness.

[0015] Step 7: Hoist the assembled steel plate to the upper part of the iron block wall obtained in the previous step, raise and level the base surface according to steps 1-2, and then increase the thickness of the raised and leveled base surface to be the same as the iron block wall surface according to steps 3-7.

[0016] Step 8: Repeat step 7 until the iron block wall reaches the designed height.

[0017] Furthermore, the assembled steel plate and its adjacent assembled steel plates on the top, bottom, left and right sides are provided with grooves and protruding ridges that extend along the side length and cooperate with each other on their opposite end faces.

[0018] Furthermore, the iron block wall adopts a layered staggered joint layout, and the assembled steel plates are reasonably divided so that the assembled steel plates have two thicknesses, and each thickness has two sizes; when the assembled steel plate is 4cm thick, there are two sizes: Size 1: 4cm thick, 2.0m wide, 4.0m long; Size 2: 4cm thick, 2.5m wide, 4.5m long. When the assembled steel plate is 2cm thick, there are also two sizes: Size 3: 2cm thick, 2.0m wide, 4.0m long; Size 4: 2cm thick, 2.5m wide, 4.5m long. The horizontal joints of the front and rear assembled steel plates that fit together are staggered, and the length is determined according to the staggered joints, so that the left and right sides are also staggered, with a staggered joint of not less than 50cm; the top surface thickness of the protruding ribs is 4cm, and the spacing between the grooves between the protruding ribs is 8cm.

[0019] Furthermore, the wedge plate is spot-welded to the leveling base surface; all welding points must be ground after removal. The wedge block is made of triangular steel block with a thickness of 2cm, and the force-bearing lug is made of rectangular steel plate with a width of not less than 2cm.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The construction structure cleverly disassembles the huge size of the radiation shielding iron block into multiple layers of steel plate walls. Each layer of steel plate wall is broken down into small assembled steel plates of different thicknesses, lengths, and heights. Based on the thickness of the steel plates, a variable cross-section positioning base structure with varying foundation heights is designed, so that the assembled steel plates can be smoothly and stably positioned in the positioning base.

[0022] 2. In this positioning base structure, the width of the slot is equal to one or more times the thickness of the assembled steel plate, and the width of the protrusion is equal to one or more times the thickness of the assembled steel plate, so that multiple assembled steel plates can be just embedded in the slot and stand stably on the protrusion, which reduces the amount of slot construction and facilitates the installation of the assembled steel plates.

[0023] 3. Simultaneously, by utilizing multiple sets of adjustable screws in the scaffold-type auxiliary positioning structure, each assembled steel plate is not only positioned by its own wedge plates and wedge blocks, but also by selecting load-bearing clamps at appropriate horizontal and height positions within the frame to provide auxiliary support, positioning, and leveling. This reduces the accuracy requirements for hoisting the assembled steel plates and enables simultaneous positioning of multiple assembled steel plates, thus accelerating the installation process.

[0024] Based on this construction structure, the entire construction method is not only safe and reliable, but also simple and convenient to operate, and has strong applicability. Attached Figure Description

[0025] Figure 1 Top view of the leveling base and support frame;

[0026] Figure 2 Elevation and sectional views of the supporting operating frame;

[0027] Figure 3 Elevation view of the side of the supporting operating frame;

[0028] Figure 4 This is a schematic diagram of the vertical splicing connection of steel plates;

[0029] Figure 5 Diagram showing the staggered joint connection of steel plates;

[0030] Figure 6 For the steel plate leveling layout and detailed drawings;

[0031] Figure 7 Control diagram for adjacent vertical joints of steel plates;

[0032] Figure 8 Detailed view of the steel plate assembly plane;

[0033] Figure 9 Front elevation view of the steel plate assembly;

[0034] Figure 10 A partial length top view of the steel plate assembly;

[0035] Figure 11 This is a top view of the installation of ultra-thick steel plates;

[0036] Figure 12 for Figure 11 Side view of a medium-thick steel plate;

[0037] Among them, 1 is a concrete base; 2 is a U-shaped channel steel; 3 is a load-bearing square steel; 4 is a pre-embedded leveling bolt; 5 is a socket joint; 6 is an adjusting screw; 7 is an adjusting nut; 8 is a load-bearing member; 9 is a horizontal crossbar; 10 is a vertical pole; 11 is a connecting fastener; 12 is an assembled steel plate; 13 is a steel plate clamp; 14 is a wedge plate; 15 is a short weld with a slit; 16 is a wedge block; 17 is a load-bearing push lug; 18 is a hydraulic jack; 19 is a brace; 20 is a leveling nut; 21 is a scissor brace; 22 is secondary concrete pouring; and 23 is a load-bearing clamping plate. Detailed Implementation

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] This invention provides an installation structure and construction method for a radiation-shielding iron block wall based on scaffolding. The structure features a variable cross-section with varying foundation height within the excavation pit. The main materials include: a concrete base 1; U-shaped channel steel 2; load-bearing square steel 3; pre-embedded leveling bolts 4; socket joints 5; adjusting screws 6; adjusting nuts 7; load-bearing members 8; longitudinal and transverse horizontal bars 9; vertical uprights 10; connecting fasteners 11; assembled steel plates 12; steel plate clamps 13; wedge plates 14; short weld seams 15; wedge blocks 16; load-bearing push lugs 17; hydraulic jacks 18; outriggers 19; leveling nuts 20; scissor braces 21; and secondary concrete pouring 22. After the steel plates are hoisted, concrete is poured.

[0040] An installation structure for a radiation-shielding iron block wall based on scaffolding includes a leveling base structure and a scaffolding-type auxiliary positioning structure, specifically configured as follows:

[0041] like Figure 1 and Figure 2 As shown, the leveling base structure includes multiple parallel and spaced load-bearing square steels 3 evenly arranged on a concrete base 1. Multiple parallel and spaced U-shaped channel steels 2 are arranged in the middle of the load-bearing square steels 3, and the U-shaped channel steels 2 are perpendicular to the length direction of the load-bearing square steels 3.

[0042] Each load-bearing square steel bar 3 has pre-drilled bolt holes at both ends, and the concrete base 1 has corresponding through holes. First, fix the leveling nut 29 on the upper end of the through hole of the concrete base 1, then place the load-bearing square steel bar 3 so that its bolt holes are aligned with the through holes. Rotate the leveling bolt 4 so that it passes through the bolt holes of the load-bearing square steel bar 3 and the leveling nut 29, so that the load-bearing square steel bar 3 is positioned on the concrete base 1. Tighten the leveling bolt 4 so that it moves vertically relative to the leveling nut 10, thereby adjusting the levelness of the load-bearing square steel bar 3 so that all the load-bearing square steel bars 3 are at the same level.

[0043] Then, multiple parallel U-shaped channel steels 2 are placed on the load-bearing square steel 3, with the openings of each U-shaped channel steel 2 facing upwards. The width of the internal groove of each U-shaped channel steel 2 is equal to the thickness of the assembled steel plate 12 to be installed. The spacing between adjacent U-shaped channel steels 2 is the thickness of two assembled steel plates 12. After the U-shaped channel steels 2 are arranged, they are fixed to the load-bearing square steel 3 by welding. Secondary concrete 22 is poured into the U-shaped channel steels 2 until it is flush with the groove opening, forming a raised ridge. This creates a stable and leveling base structure on the concrete base 1. The grooves formed between adjacent U-shaped channel steels 2 can accommodate the steel plates 12 to be assembled.

[0044] like Figure 2 and Figure 3As shown, the scaffolding-type auxiliary positioning structure includes scaffolding symmetrically set on both sides of the leveling base structure, and sets of socket joints 5 symmetrically set on both sides of each load-bearing square steel 3. The spacing between the symmetrical socket joints 5 is greater than the length between the leveling bolts 4 at both ends of the load-bearing square steel 3. Each set of socket joints 5 has at least two socket joints. The socket joints 5 are fixedly welded to the concrete base 1. The socket joints 5 are 15cm long and the diameter is slightly smaller than the outer diameter of the vertical pole 10 by 1-2mm. Each socket joint 5 is connected to the vertical pole 10. Any adjacent vertical poles 10 are connected by connecting fasteners 11 to erect longitudinal and transverse horizontal bars 9. Continuous scissor bracing 21 is erected between the vertical poles 10 on the facade to form a stable scaffolding. Outriggers 19 are added to the outside of the scaffolding for reinforcement. Adjustable nuts 7 are welded to both ends of a 2-meter-long steel pipe to form load-bearing members 8. These members 8 are horizontally positioned within the scaffold frame, their length perpendicular to the U-shaped channel steel 2. The load-bearing members 8 are fixedly connected to the frame using connecting fasteners 11. Adjustable nuts 7 are welded to both ends of the load-bearing members 8. Adjusting screws 6 are threaded onto the adjusting nuts 7, inserted into the load-bearing members 8, and extend outwards. A load-bearing clamp 23 is welded to one end of the adjusting screw 6 extending from the load-bearing member 8. The plane of the load-bearing clamp 23 is perpendicular to the length of the adjusting screw 6. The adjusting screws 6 on each side of the scaffold are symmetrically arranged, ensuring that a pair of load-bearing clamps 23 face each other. Rotating the other end of the adjusting screw 6 adjusts the horizontal position of the load-bearing clamp 23, allowing it to fit snugly against the assembled steel plate 12.

[0045] like Figures 4 to 10 As shown, the assembled steel plate 12 and its adjacent assembled steel plates 12 on the top, bottom, left, and right are positioned in the grooves and protrusions of the leveling base structure. The process of installing and leveling the assembled steel plate 12 is as follows:

[0046] Step 1: First, use a pair of load-bearing clamps 23 in the scaffold-type auxiliary positioning structure to install and level a two-layer assembled steel plate 12 to form a steel plate wall, creating a leveling base surface, such as... Figure 5 As shown;

[0047] Step 2: Place one side of the assembly steel plate 12 to be leveled onto the side of the already leveled assembly steel plate 12.

[0048] Step 3: Along the perimeter of the assembled steel plate 12 to be leveled, spot weld L-shaped wedge plates 14 at intervals no greater than 2 meters onto the leveled assembled steel plate 12. Using the leveled assembled steel plate 12 as a leveling base, embed wedge blocks 16 between the wedge plates 14 and the assembled steel plate 12 to be leveled, pressing the gap between the assembled steel plate 12 and the leveling base from all sides to adjust the flatness of the assembled steel plate 12 itself. Figure 7 ;

[0049] Step 4: After leveling the assembled steel plate 12, weld the force-bearing lug 17, separated from the wedge plate 14, onto the surface near its upper side. Install a hydraulic jack 18 between the wedge plate 14 and the force-bearing lug 17. Remove the spot welds between the wedge plate 14 on the left and right sides of the newly installed assembled steel plate 12 and the leveling base surface. Extend the hydraulic jack 18 to push the newly installed assembled steel plate 12 to translate, causing the left and right edges of the newly installed assembled steel plate 12 to be misaligned with the vertical seams of the assembled steel plate 12 on the leveling base surface. Figure 8 As shown;

[0050] Step 5: Then weld and fix the newly installed steel plate 12, which has been leveled, to the leveling base surface, and remove the surrounding wedge plates 14;

[0051] Step 6: Then repeat steps 2 to 5 above to install other assembly steel plates 12 around the newly leveled assembly steel plate 12.

[0052] Step 7: Finally, the adjacent leveled newly installed steel plates 12 are connected by beveling and short weld 15.

[0053] Preferably, the wedge plate 14 is spot-welded to the leveling base surface; all temporary welding points must be ground after removal. The wedge block 16 is made of triangular steel block with a thickness of 2cm. The force-bearing lug 17 is made of rectangular steel plate with a width of not less than 2cm and a thickness of not less than 2cm.

[0054] Preferably, when the assembled steel plate 12 is 4cm thick, there are two sizes: Size 1: 4cm thick, 2.0m wide, 4.0m long; Size 2: 4cm thick, 2.5m wide, 4.5m long. When the assembled steel plate is 2cm thick, there are also two sizes: Size 3: 2cm thick, 2.0m wide, 4.0m long; Size 4: 2cm thick, 2.5m wide, 4.5m long. The horizontal seams of the two adjacent assembled steel plates 12 are staggered, with the length determined by the staggered seams, ensuring that the left and right sides are also staggered, with a stagger of no less than 50cm.

[0055] Preferably, the concrete base 1 is poured to a depth of not less than 50mm, and the pre-embedded leveling bolt 4 with a diameter of 25mm is pre-embedded in the concrete base 1 to a depth of not less than 30cm, with an exposed length of not less than 20cm, and a leveling nut 20 is inserted through it.

[0056] Preferably, the concrete base 1 has a planar dimension of 20 meters in length and 1.5 meters in width, the corresponding load-bearing square steel 3 has a length of 1.5 meters, and the U-shaped channel steel 2 has a length of 20 meters.

[0057] Preferably, the diameter of the pre-drilled screw holes at both ends of the stressed square steel 3 is 28mm, and the spacing between the pre-drilled holes on both sides is the same as the spacing between a pair of pre-embedded leveling bolts 4, through which the pre-embedded leveling bolts 4 are inserted.

[0058] Preferably, the wedge plate 14 is welded to a fixed base surface, such as initially to a leveling base; all temporary welding points must be ground after removal.

[0059] Preferably, the steel plate is fixed by short welds with partial slits 15, with a spacing of approximately 2 meters between the short welds 15. Subsequent welding is done temporarily, and the plate is temporarily removed after use.

[0060] Preferably, the scaffolding frame height does not exceed 6 meters and can be used as an upper working platform. When hoisting and leveling the assembled steel plates 12, construction workers can control the adjusting screws 6 on the outside of the scaffolding to stably adjust the verticality of the assembled steel plates 12. Preferably, the number of load-bearing members 8 and adjusting screws 6 in the scaffolding-type auxiliary positioning structure can be multiple. The height and position of the load-bearing members 8 and adjusting screws 6 can be adjusted as needed, and multiple assembled steel plates 12 can be clamped simultaneously, so that the load-bearing clamping plate 23 can stably clamp each assembled steel plate 12.

[0061] A construction method for installing radiation-shielding iron block walls based on scaffolding includes the following steps:

[0062] (1) The assembled steel plate 12 is hoisted into the secondary concrete 9 in the protrusion of the leveling base structure and located near the middle of a secondary concrete 9. According to the height of the assembled steel plate 12, the adjusting screw 6 at a medium-high position in the scaffold-type auxiliary positioning structure is selected. Multiple pairs of adjusting screws 6 are rotated so that multiple pairs of force-bearing clamps 23 move closer to each other and clamp the two sides of the assembled steel plate 12, so that the assembled steel plate 12 is perpendicular to the plane formed by the force-bearing square steel 3. The force-bearing square steel 3 is pre-adjusted to be horizontal.

[0063] (2) Install the next assembly steel plate 12 on the upper and left and right sides of the assembly steel plate 12 that has been adjusted to a vertical state, as in step (1), and align and adjust the assembly steel plate 12 to a vertical state. Make bevels between adjacent assembly steel plates 12 and weld them with short weld bars 15 until the assembly steel plates 12 form a wall with a height of at least two layers, which serves as the leveling base. In this step, according to the actual installation process, select the appropriate position of the adjusting screw 6 in the scaffold-type auxiliary positioning structure so that the force-bearing clamp 23 can stably clamp the assembly steel plate 12.

[0064] (3) The steel plate 12 to be leveled is attached to one side of the leveling base surface. The horizontal seams of the steel plate 12 to be leveled and the steel plate 12 on the leveling base surface are staggered. L-shaped wedge plates 14 are arranged at intervals along at least two edges of the steel plate 12 to be leveled. One end of the wedge plate 14 is welded to the leveling base surface. The wedge block 16 is embedded between the other end of the wedge plate 14 and the leveling base surface. The gap between the steel plate 12 to be leveled and the leveling base surface is squeezed from all sides of the steel plate 12 to be leveled, and the flatness of the steel plate 12 to be leveled is adjusted.

[0065] (4) After the flat assembly steel plate 12 is leveled, remove the spot welds between the wedge plates 14 on its left and right sides and the leveling base surface. Weld the force-bearing lugs 17 separated from the wedge plates 14 on the surface near its upper side. Install the hydraulic jack 18 between the wedge plates 14 and the force-bearing lugs 17. The hydraulic jack 18 extends and pushes the leveled assembly steel plate 12 to move horizontally, so that the left and right edges of the leveled assembly steel plate 12 are staggered from the vertical seams of the assembly steel plate 12 in the leveling base surface.

[0066] (5) Then weld and fix the assembled steel plate 12 after translation to the leveling base surface, and remove the surrounding wedge plate 14, force-bearing lug 17, and hydraulic jack 18;

[0067] (6) Then repeat the above steps (3) to (5), install other assembly steel plates 12 around the assembly steel plate 12 fixed in step (5), and finally weld the adjacent assembly steel plates 12 together with beveled joints using short weld 15 until the iron block wall formed by attaching multiple layers of assembly steel plates 12 in sequence to the leveling base in step (2) reaches the design thickness.

[0068] (7) Hoist the assembled steel plate 12 to the upper part of the iron block wall obtained in step (6), raise the leveling base surface according to steps (1) to (2), and then increase the thickness of the raised leveling base surface to be the same as the iron block wall surface in steps (3) to (7).

[0069] (8) Repeat step (7) until the iron block wall reaches the designed height.

[0070] The iron block wall adopts a layered, staggered arrangement. The assembled steel plates 12 are rationally divided, resulting in two thicknesses and two sizes for each thickness. When the assembled steel plate 12 is 4cm thick, there are two sizes: Size 1: 4cm thick, 2.0m wide, 4.0m long; Size 2: 4cm thick, 2.5m wide, 4.5m long. When the steel plate material is 2cm thick, there are also two sizes: Size 3: 2cm thick, 2.0m wide, 4.0m long; Size 4: 2cm thick, 2.5m wide, 4.5m long. The horizontal joints of the two adjacent assembled steel plates 12 are staggered, with the length determined by the staggered joint, ensuring that the left and right sides are also staggered, with a stagger of no less than 50cm. The top surface thickness of the raised ribs is 4cm, and the spacing between the grooves between the raised ribs is 8cm.

[0071] An installation structure and construction method for a radiation-shielding iron block wall based on scaffolding is not only convenient to construct and meets the radiation protection design requirements of steel plates, but also has reasonable construction costs, relatively high construction efficiency, and strong applicability. The above-described embodiments of the radiation-shielding iron block installation structure and construction method of this invention do not constitute a limitation on the scope of protection of this invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of the claims of this invention.

Claims

1. An installation structure for an ultra-thick radiation-proof iron block wall based on scaffolding, characterized in that, The installation structure includes a leveling base structure and a scaffold-type auxiliary positioning structure. The leveling base structure includes a concrete base (1) and a base plate. The upper surface of the base plate is partially covered with multiple raised ribs of equal width and equidistant arrangement. All the raised ribs extend from one edge of the base plate to the other edge in a straight line. The grooves between the raised ribs are of equal depth. The base plate is mounted on a lifting mechanism installed on the concrete base (1). The lifting mechanism is used to keep the base plate level. The scaffold-type auxiliary positioning structure includes scaffolds symmetrically arranged on both sides of the leveling base structure. The scaffolds are located between the bottom ends of the scaffolds on both sides of the base plate. Multiple sets of adjusting screws (6) are symmetrically distributed in the scaffold frames on both sides. Two symmetrical adjusting screws (6) form a pair that can move in a straight line perpendicular to the raised ribs relative to the frame. The ends of the pair of adjusting screws (6) that approach each other are equipped with force-bearing clamps (23). The bottom surface of the base plate is provided with a steel frame perpendicular to the protruding rib. The steel frame is installed on the lifting mechanism of the concrete base (1). The two ends of the steel frame extend out of the base plate. The steel frame consists of multiple parallel and spaced load-bearing square steels (3) evenly arranged on the concrete base (1). Each load-bearing square steel (3) has screw holes reserved at both ends. The concrete base (1) has corresponding through holes. The screw holes of the load-bearing square steel (3) are aligned with the through holes. The lifting mechanism includes a leveling nut (10) fixed in the through hole and a leveling bolt (4) passing through the screw hole and the leveling nut (10). The movement of turning the leveling bolt (4) causes the load-bearing square steel (3) to move up and down, which is used to adjust the levelness of the load-bearing square steel (3). Each of the protruding ribs is pre-embedded with a U-shaped channel steel (2), and the U-shaped channel steel (2) is fixed to the load-bearing square steel (3) by welding. The distance between the scaffolding on both sides is greater than the length between the leveling bolts (4) at both ends of the load-bearing square steel (3).

2. The installation structure of an ultra-thick radiation-proof iron block wall based on scaffolding according to claim 1, characterized in that, The scaffold frame is fixed with multiple load-bearing members (8) that cooperate with the adjusting screw. The load-bearing members (8) are horizontally set in the scaffold frame, and their length direction is perpendicular to the U-shaped channel steel (2). The load-bearing members (8) are fixedly connected to the frame by connecting fasteners (11). Adjusting nuts (7) are welded to both ends of the load-bearing members (8). After the adjusting screw (6) is threadedly connected to the adjusting nut (7), it is inserted into the load-bearing member (8) and extends out. The load-bearing clamp (23) is welded to the end of the adjusting screw (6) after it extends out, and the surface of the load-bearing clamp (23) is perpendicular to the length direction of the adjusting screw (6). Rotating the adjusting screw (6) can adjust the length of the adjusting screw (6) extending relative to the load-bearing member (8).

3. The installation structure of a thick radiation-proof iron block wall based on scaffolding according to claim 2, characterized in that, The length of the U-shaped channel steel (2) is greater than the horizontal length of the iron block wall.

4. An installation method for an ultra-thick radiation-proof iron block wall using an installation structure based on scaffolding as described in any one of claims 2 to 3, characterized in that, Includes the following steps: (1) The assembled steel plate (12) is hoisted between the protruding ribs in the leveling base structure and located near the middle of one of the protruding ribs. According to the height of the assembled steel plate (12), multiple pairs of adjusting screws (6) at a medium-high position in the scaffold-type auxiliary positioning structure are selected, and the force-bearing clamps (23) at the ends of the multiple pairs of adjusting screws (6) are brought close to the assembled steel plate (12) to clamp the two sides of the assembled steel plate (12) so that they are perpendicular to the plane formed by the force-bearing square steel (3). The force-bearing square steel (3) is pre-adjusted to be horizontal. (2) Install the next assembly steel plate (12) on the upper and left and right sides of the assembly steel plate (12) that has been adjusted to a vertical state according to step (1), and align and adjust the assembly steel plate (12) to a vertical state. Weld the beveled joints between adjacent assembly steel plates (12) using short welds (15) until the assembly steel plates (12) form a wall with a height of at least two layers, which serves as the leveling base. (3) The assembly steel plate (12) to be leveled is attached to one side of the leveling base. The horizontal seams of the assembly steel plate (12) to be leveled and the assembly steel plate (12) on the leveling base are staggered. L-shaped wedge plates (14) are arranged at intervals along at least two edges of the assembly steel plate (12) to be leveled. One end of the wedge plate (14) is welded to the leveling base. The wedge block (16) is embedded between the other end of the wedge plate (14) and the leveling base. The gap between the assembly steel plate (12) to be leveled and the leveling base is squeezed from all sides of the assembly steel plate (12) to be leveled, and the flatness of the assembly steel plate (12) to be leveled is adjusted. (4) After the flattened assembly steel plate (12) is leveled, the spot welds between the wedge plates (14) on its left and right sides and the leveling base are removed. The force-bearing lugs (17) separated from the wedge plates (14) are welded on the surface near its upper side. A hydraulic jack (18) is installed between the wedge plates (14) and the force-bearing lugs (17). The leveled assembly steel plate (12) is pushed to move by the extension of the hydraulic jack (18), so that the left and right edges of the leveled assembly steel plate (12) are staggered from the vertical seams of the assembly steel plate (12) in the leveling base. (5) Then weld and fix the assembled steel plate (12) after translation to the leveling base surface, and remove the surrounding wedge plate (14), force-bearing lug (17), and hydraulic jack (18). (6) Then repeat the above steps (3)~(5), install other assembly steel plates (12) around the assembly steel plate (12) fixed in step (5), and finally bevel the adjacent assembly steel plates (12) and weld them together with short welds (15) until the iron block wall formed after the front and back layers of assembly steel plates (12) are attached in sequence after leveling the base surface in step (2) reaches the design thickness. (7) Hoist the assembled steel plate (12) to the upper part of the iron block wall obtained in step (6), raise the leveling base surface according to steps (1)~(2), and then increase the thickness of the raised leveling base surface to the same as the iron block wall surface according to steps (3)~(7). (8) Repeat step (7) until the iron block wall reaches the designed height.

5. The installation method of the ultra-thick radiation-proof iron block wall according to claim 4, characterized in that, The assembled steel plate (12) and its adjacent assembled steel plates (12) on the top, bottom, left and right sides are provided with grooves and protrusions that extend along the side length and cooperate with each other on their opposite end faces.

6. The installation method of the ultra-thick radiation-proof iron block wall according to claim 4, characterized in that, The iron block wall adopts a layered staggered joint layout. The assembled steel plate (12) is reasonably divided so that the assembled steel plate (12) has two thicknesses and two sizes for each thickness. When the assembled steel plate (12) is 4cm thick, there are two sizes: Size 1: 4cm thick, 2.0m wide, and 4.0m long; Size 2: 4cm thick, 2.5m wide, and 4.5m long. When the assembled steel plate (12) is 2cm thick, there are also two sizes: Size 3: 2cm thick, 2.0m wide, and 4.0m long; Size 4: 2cm thick, 2.5m wide, and 4.5m long. The horizontal joints of the two assembled steel plates (12) that are attached to each other are staggered. The length is determined according to the staggered joints so that the left and right sides are also staggered. The staggered joints are not less than 50cm. The top surface thickness of the protruding rib is 4cm, and the distance between the grooves between the protruding ribs is 8cm.

7. The installation method of the ultra-thick radiation-proof iron block wall according to claim 4, characterized in that, The wedge plate (14) is spot welded to the leveling base surface; all welding points need to be ground after removal. The wedge block (16) is made of triangular steel block with a thickness of 2cm. The force-bearing lug (17) is made of rectangular steel plate with a thickness of not less than 2cm.

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