CN115306173A - Construction method for reinforcing inner side of silo - Google Patents

Abstract

The invention relates to the technical field of silo building construction, in particular to a construction method for reinforcing the inner side of a silo, which comprises the following steps: s1, hoisting a repairing template assembly into a silo, and connecting and fixing the repairing template assembly; s2, moving the repairing template assembly to a specified construction height, and constructing a first repairing space; s3, pouring a first reinforcing layer; s4, removing the bottom template; s5, moving the side template; s6, lifting the repair template assembly, and constructing a second repair space; s7, pouring a second reinforcing layer; s8, repeating the steps S4-S7 until the reinforced concrete on the inner wall of the silo is completely constructed, and dismantling the repair template assembly; when the inner side of the silo is reinforced, related equipment in the installed silo does not need to be dismantled, construction operation is simple and convenient, construction materials in an upper construction area can be dragged in the construction process, the influence on lower equipment is small, construction efficiency is improved, and cost is reduced.

Description

The construction method of strengthening the inner side of the silo

technical field

The invention relates to the technical field of silo building construction, in particular to a construction method for reinforcing the inside of a silo.

Background technique

After the construction of the concrete circular silo is completed, relevant equipment is installed inside the silo. When it is found that there is a defect in the strength of the silo and needs to be reinforced, due to the difficulty in dismantling the relevant equipment, direct construction on the inner wall of the silo will easily cause the construction parts to fall off, damage the equipment, and make maintenance and construction difficult.

Contents of the invention

Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a construction method for reinforcing the inner side of the silo, which is easy to operate and does not need to dismantle related equipment installed inside the silo.

The invention provides a construction method for reinforcing the inner side of a silo, comprising the following steps:

S1. Hoist the repair formwork assembly into the silo and connect and fix it:

hoisting the repair formwork assembly, putting it into the silo from the top opening of the silo, and fastening the repair formwork assembly to the silo through the load-bearing assembly;

S2. The repair formwork components are moved to the specified construction height, and the first repair space is constructed:

The repair formwork assembly is adjusted in height, moved to a designated construction height, and then the repair formwork assembly is stretched to contact the inner wall of the silo, and the bottom formwork and side formwork of the repair formwork assembly form a top with the inner wall of the silo The first repair space in the shape of an open annular groove;

S3, pouring the first reinforcement layer:

Build a temporary construction platform on the repair formwork assembly, carry out reinforcement construction in the first repair space, bind steel bars, and then pour concrete to form a first reinforcement layer;

S4, remove the bottom template:

When the concrete of the first reinforcement layer reaches the demolition strength, the bottom template is removed;

S5. Mobile side template:

After the bottom formwork is removed, the side formwork is recovered in a direction away from the first reinforcement layer, and separated from the first reinforcement layer;

S6. Elevate the repair template assembly, and build a second repair space:

After the side formwork is separated from the first reinforcement layer, the repair formwork assembly is lifted up for a certain distance, and the side formwork moves toward the inner wall of the silo until the side formwork is separated from the first reinforcement layer. The top of the outer surface of the reinforcement layer is in close contact, and the side formwork, the top surface of the first reinforcement layer and the inner wall of the silo form a second repair space;

S7, pouring the second reinforcement layer:

Carry out reinforcement construction in the second repair space, bind steel bars, and then pour concrete to form a second reinforcement layer;

S8. Steps S4-S7 are repeated until the reinforced concrete on the inner wall of the silo is completely constructed, and then the repair formwork assembly is removed.

In this technical solution, when reinforcing the inner side of the silo, there is no need to dismantle the related equipment installed in the silo, the construction operation is simple, the construction materials in the upper construction area can be dragged during the construction process, and the impact on the lower equipment is small. The construction efficiency is improved and the cost is reduced.

In some embodiments of the present application, in step S2, when constructing the first repair space, the repair formwork assembly is extended through the first telescopic oil cylinder, and the first telescopic oil cylinder is horizontally fixed on the support frame of the repair formwork assembly Above, the piston rod of the first telescopic cylinder is fixed to the side template, and the first telescopic cylinder drives the side template and the bottom template to move toward the inner wall of the silo until the bottom template and the bottom template The inner wall of the silo is in close contact, and at this time, the side formwork, the bottom formwork, and the inner wall of the silo form the first repair space.

In some embodiments of the present application, the repair template assembly includes at least two side templates, the number of the bottom template is the same as that of the side templates,

The side formwork is an arc-shaped plate concentrically arranged with the silo and vertically arranged parallel to the inner wall of the silo;

The bottom formwork is horizontally fixed on the bottom of the side formwork, perpendicular to the side formwork, and the bottom formwork is an arc-shaped plate concentrically arranged with the bottom surface of the silo;

The bottom formwork and the side formwork are detachably connected.

In some embodiments of the present application, in steps S2 and S6, the height of the repair template assembly is adjusted through the load-bearing assembly, and the load-bearing assembly includes:

At least two load-bearing beams are fixed parallel to the top opening of the silo;

At least two second telescopic oil cylinders are vertically fixed on the load-bearing beam;

The lifting pipe, the upper end is connected with the second telescopic oil cylinder, and the lower end is fixedly connected with the support frame of the repair formwork assembly;

The expansion and contraction of the second telescopic oil cylinder drives the lifting pipe up and down, thereby driving up and down the repair formwork assembly.

In some embodiments of the present application, the support frame of the repair template assembly includes horizontal support pipes, vertical support pipes, and inclined pipes for increasing strength;

The lateral support tube includes an outer tube and an inner tube, the inner tube is sleeved inside the outer tube, and a slideway is provided on the inner wall of the outer tube, and a slider is correspondingly provided on the outer wall of the inner tube , so that the inner tube can slide along the length direction of the outer tube.

In some embodiments of the present application, the cylinder barrel of the first telescopic oil cylinder is fixed on the outer tube, and the piston rod of the first telescopic oil cylinder is fixedly connected with the side formwork; the outer end of the inner tube It is fixed with the side formwork to improve the stability of the side formwork when it moves.

In steps S2, S5 and S6, the first telescopic oil cylinder drives the side formwork to extend or retract, and the inner tube slides along the outer tube to limit the moving track of the side formwork.

In some embodiments of the present application, in step S2 and step S6, after the side formwork is stretched in place, in order to make the first repair space or the second repair space form a complete closed-loop structure, two adjacent A second side template is arranged between the side templates, and a second bottom template is arranged between two adjacent bottom templates;

The second side formwork is a vertically arranged arc-shaped plate; the second bottom formwork is a horizontally arranged arc-shaped plate.

In some embodiments of the present application, in step S4, after the bottom formwork is removed, the second bottom formwork is removed, and then the second side formwork is removed, and then step S5 is performed to move the side formwork.

In some embodiments of the present application, protruding sliders with a trapezoidal shape in orthographic projection are provided on both side end faces of the side formwork, and the two side end surfaces of the second side formwork abutting with the side formwork are A slide rail is provided, and the slide rail is a trapezoidal groove structure in an orthographic projection, and the slide rail is adapted to the shape of the protruding slideway;

In step S2 and step S6, when the second side template is installed, the trapezoidal groove slides downward along the trapezoidal protrusion;

In step S4, when the second side template is removed, the trapezoidal groove slides upward along the trapezoidal protrusion.

In some embodiments of the present application, the bottom formwork and the second bottom formwork are provided with sealing strips on the end surfaces close to the inner wall of the silo, so as to ensure that the bottom formwork and the second bottom formwork are compatible with the first repair space when the first repair space is constructed. The inner wall of the silo is tightly contacted to prevent leakage during pouring of concrete and affect the reinforcement effect.

Based on the above technical solution, when the method of the present invention carries out reinforcement construction on the inner side of the silo, there is no need to dismantle the related equipment installed in the silo, the construction operation is simple, and the construction materials in the upper construction area can be dragged during the construction process, and the lower part The impact on the equipment is small, the construction efficiency is improved, and the cost is reduced.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the top view when the repair template assembly is put into the silo in the embodiment of the present invention;

Fig. 2 is a top view when the load-bearing assembly is placed at the top opening of the silo in the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of constructing a first repair space in an embodiment of the present invention;

Fig. 4 is the structural representation of pouring the first reinforcement layer in the embodiment of the present invention;

Fig. 5 is a top view structural diagram when the bottom template is in contact with the inner wall in the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of constructing a second repair space in an embodiment of the present invention;

Fig. 7 is the structural representation of pouring the second reinforcement layer in the embodiment of the present invention;

Fig. 8 is a structural schematic diagram of adding a second side formwork between the side formworks and adding a second bottom formwork between the bottom formworks in the embodiment of the present invention;

Fig. 9 is an enlarged view of part A of Fig. 8;

In the figure,

10. Silo; 11. Top opening; 12. Inner wall; 20. Repair formwork assembly; 21. Bottom formwork; 211. Protruding part; 22. Side formwork; 221. Protruding slider; 24, support frame; 241, horizontal support tube; 2411, outer tube; 2412, inner tube; 242, vertical support tube; 243, inclined tube; 25, second side formwork; 251, slide rail; 26, second bottom template; 261, groove; 30, load-bearing component; 31, load-bearing beam; 32, second telescopic oil cylinder; 33, lifting pipe; 40, first repair space; 41, first reinforcement layer; 50, second repair space; 51. The second reinforcement layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

The terms "first", "second", and "third" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include one or more of these features.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figures 1-6, in the construction method for strengthening the inner side of the silo in the embodiment of the present application, the top of the silo 10 is open, and the repair space is constructed on the inner side of the silo 10 by installing and moving the repair formwork assembly 20, so as to The inside of the silo 10 is reinforced.

As shown in Figure 1-3, in this embodiment, the construction method for strengthening the inner side of the silo includes the following steps:

S1. Hoist the repair formwork assembly into the silo and connect and fix it:

Use a crane to hoist the repair template assembly 20, and put it into the interior of the silo 10 from the top opening of the silo 10, as shown in Figure 1; place the load-bearing assembly at the top opening 11 of the silo 10, as shown in Figure 2 As shown, the repair template assembly 20 is fastened to the silo 10 through the bearing assembly 40;

S2. The repair formwork components are moved to the specified construction height, and the first repair space is constructed:

The repair formwork assembly 20 adjusts the height, moves to the specified construction height, as shown in Figure 3, then the repair formwork assembly stretches 20 to contact with the inner wall 12 of the silo 10, and the bottom formwork 21 and the side formwork 22 of the repair formwork assembly 20 are in contact with the silo The inner wall 12 of 10 forms a first repair space 40 in the shape of an annular groove with an open top;

S3, pouring the first reinforcement layer:

Build a temporary construction platform on the repair formwork assembly 20, and carry out planting bar construction and binding steel bars in the first repair space 40, and then pour concrete to form the first reinforcement layer 41, as shown in Figure 4;

S4, remove the bottom template:

After the concrete of the first reinforcement layer 41 reaches the demolition strength, the bottom template 21 is removed;

S5. Mobile side template:

After the bottom template 21 is removed, the side template 22 is recovered in a direction away from the first reinforcement layer 41, and separated from the first reinforcement layer 41;

S6. Elevate the repair template assembly, and build a second repair space:

After the side formwork 22 is separated from the first reinforcement layer 41, the repair formwork assembly 20 is lifted upwards for a certain distance, and the side formwork 22 moves toward the inner wall 12 of the silo 10 again until the side formwork 22 and the outer surface of the first reinforcement layer 31 close contact with the upper side, the side formwork 22, the top surface of the first reinforcement layer 31 and the inner wall 12 of the silo form a second repair space 50, as shown in Figure 6;

S7, pouring the second reinforcement layer:

Carry out reinforcement construction in the second repair space 50, bind steel bars, and then pour concrete to form a second reinforcement layer 51, as shown in Figure 7;

S8. Steps S4-S7 are repeated until the reinforced concrete layer of the inner wall 12 of the silo 10 is completely constructed, and the repair formwork assembly 20 is removed.

When the reinforcement construction is carried out on the inner side of the silo 10, there is no need to dismantle the relevant equipment installed in the silo, the construction operation is simple, and the construction materials in the upper construction area can be dragged during the construction process, which has little impact on the lower equipment and improves the construction efficiency. , reducing costs.

In step S2, when building the first repair space 30, the repair formwork assembly 20 is extended by the first telescopic cylinder 23, and the first telescopic cylinder 23 is horizontally fixed on the support frame 24 of the repair formwork assembly 20, and the piston of the first telescopic cylinder 23 The rod is fixed to the side formwork 22, and the first telescopic cylinder 23 drives the side formwork 22 and the bottom formwork 21 to move toward the inner wall 12 of the silo until the bottom formwork 21 is in close contact with the inner wall 12 of the silo. At this time, the side formwork 22 and the bottom formwork 21 1. The inner wall 12 of the silo forms an annular first repair space 40 with an open top.

As shown in FIG. 1 , in this embodiment, the repair template assembly 20 includes four side templates 22 and four bottom templates 21, the side templates 22 are quarter-circle arc-shaped plates concentrically arranged with the silo 10, and Vertically arranged parallel to the inner wall 12 of the silo; the bottom template 21 is horizontally fixed on the bottom of the side template 22, perpendicular to the side template 22, and the bottom template 21 is a quarter circle concentrically arranged with the bottom surface of the silo Horizontal curved plate;

In order to facilitate subsequent construction, the bottom formwork 21 and the side formwork 22 are detachably connected. When the first reinforcement layer 41 reaches the demolition strength, the bottom formwork 21 is removed and the second repair space 50 is constructed. The top surface of the reinforcement layer 31 is used as a bottom template.

In steps S2 and S6, the height of the repair template assembly 20 is adjusted through the load-bearing assembly 30, as shown in Figure 2-3, the load-bearing assembly 30 includes:

There are four load-bearing beams 31, which are divided into two groups, and two load-bearing beams 31 form a group, which are fixed on the top opening 11 of the silo 10 in parallel;

The second telescopic oil cylinder 32, four, is vertically fixed on the described load-bearing crossbeam, two second telescopic oil cylinders are arranged on every group of load-bearing crossbeam 31, and the elongation direction of the second telescopic oil cylinder is vertically downward;

Lifting pipes 33, four, each second telescopic oil cylinder 32 is connected with a lifting pipe 33, the upper end of the lifting pipe 33 is connected with the second telescopic oil cylinder 32, and the lower end is fixedly connected with the support frame 24 of the repair template assembly 20;

The expansion and contraction of the second telescopic oil cylinder 32 drives the lifting pipe 33 to rise and fall, and the lifting pipe 33 drives the lifting of the repair formwork assembly 20 to reach the construction height.

As shown in FIG. 3 , the support frame 24 of the repair formwork assembly 20 of the present application includes a horizontal support pipe 241, a vertical support pipe 242, and an inclined pipe 243 for increasing the strength of the repair formwork assembly;

The lateral support tube 241 includes an outer tube 2411 and an inner tube 2412. The inner tube 2412 is sleeved inside the outer tube 2411, and the inner wall of the outer tube 2411 is provided with a slideway, and the outer wall of the corresponding inner tube 2412 is correspondingly provided with a slideway. block, the inner tube 2412 can slide along the length direction of the outer tube 2411.

As shown in Figure 4, the cylinder barrel of the first telescopic oil cylinder 23 is fixed on the outer pipe 2411, and the piston rod of the first telescopic oil cylinder 23 is fixedly connected with the back side of the side template 22; the outer end of the inner pipe 2412 is also connected to the side The back side of the template 22 is fixed, which improves the stability of the side template 22 when it moves. In steps S2, S5 and S6, the first telescopic cylinder 23 drives the side formwork 22 to extend or recover, and the inner pipe 2412 slides along the outer pipe 2411 to limit the movement track of the side formwork 22 and raise the side formwork 22. Stability of movement.

As shown in Figure 8, in steps S2 and S6, after the side templates 22 are stretched in place, there is a gap between two adjacent side templates 22, so that the first repair space 40 and the second repair space 50 are A complete closed-loop structure prevents leakage during the pouring of concrete. A second side formwork 25 is provided between two adjacent side formworks 22, and a second bottom formwork is provided between two adjacent bottom formworks 21. 26. In this embodiment, four second side templates 25 and four second bottom templates 26 are provided;

The second side template 25 is a vertically arranged arc-shaped plate; the second bottom template 26 is a horizontally arranged arc-shaped plate 26 .

As shown in Figures 8-9, protruding sliders 221 whose orthographic projection shape is trapezoidal are provided on both end surfaces of the side formwork 22, and slide rails are provided on both side end surfaces of the second side formwork 25 and the side formwork 22. 251, the slide rail 251 is a groove structure whose orthographic projection shape is trapezoidal, the slider 221 is adapted to the shape of the slide rail 251, and the orthographic contour area of the slide rail 251 is slightly larger than the orthographic projection area of the slider 221, so that The slide rail 251 can smoothly connect with the slide block 221 , the top end of the slide block 221 is lower than the side formwork 22 , and the bottom end is flush with the bottom edge of the side formwork 22 . In order to connect the bottom template 21 and the second bottom template 26 firmly, the two ends of the bottom template 21 are provided with a convex portion 211 whose orthographic projection shape is a trapezoid, and the two ends of the second bottom template 26 are provided with a concave portion whose orthographic projection shape is a trapezoid. The groove 261 and the groove 261 match the shape of the protrusion 211 .

In step S2 and step S6, when the second side formwork 25 is installed, the second side formwork 25 moves from top to bottom, and the bottom of the second side formwork 25 enters the gap between two adjacent side formworks 22 and continues to move downward , until the bottom of the slide rail 251 first docks with the upper end of the slider 221, then the second side formwork 25 continues to move downward, and the slide rail 251 moves down along the slide block 221 until the bottom of the second side formwork 25 and the side The bottom of the template 22 is flush, and the second side template 25 is installed in place.

In step S4, when the second side formwork 22 is removed, the second side formwork 25 is lifted upwards, and the slide rail 251 moves along the slider 221 until the bottom of the second side formwork 25 breaks away from the top of the side formwork 22, and the second side formwork 22 Continue to move up until the height that does not affect the construction of the second reinforcement layer.

In step S4, after the bottom formwork 21 is removed, the second bottom formwork 26 is removed, and then the second side formwork 25 is removed, and then the side formwork 22 is moved in step S5 to separate the side formwork 22 from the first reinforcement layer.

The bottom formwork 21 and the second bottom formwork 26 are provided with sealing strips (not shown in the figure) on the end faces close to the inner wall 11 of the silo to ensure that when the first repair space 40 is constructed, the bottom formwork 21 and the second bottom formwork 26 is in tight contact with the silo inner wall 11 to prevent leakage when pouring concrete and affect the reinforcement effect.

Continuing to refer to FIG. 5 , in step S6, the first telescopic oil cylinder 23 is retracted, so that the side formwork 22 is separated from the first reinforcement layer 41 , the second telescopic oil cylinder 32 in the load-bearing assembly 30 is retracted, and the lifting pipe 33 lifts up the repair formwork assembly 20 , the side formwork 22 is lifted thereupon, and when the low end of the side formwork 22 is lower than the top 10cm distance of the first reinforcement layer 41, the second telescopic oil cylinder 32 stops recovering, and the first telescopic oil cylinder 23 is extended, and the side formwork 22 is again Move toward the direction close to the inner wall 12 of the silo 10 until the side formwork 22 is in close contact with the top of the outer surface of the first reinforcement layer 31, then install the second side formwork 25, the top surface of the side formwork 22, the first reinforcement layer 31 and the cylinder The inner wall 12 of the bin forms a second repair space 50 .

When using the above method to reinforce the inner side of the silo, there is no need to dismantle the relevant equipment installed in the silo, the construction operation is simple, and the construction materials in the upper construction area can be dragged during the construction process, which has little impact on the lower equipment and improves In order to improve the construction efficiency and reduce the cost.

Finally, it should be noted that each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation of the present invention can still be carried out Modification or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, all of them shall be included in the scope of the technical solution claimed in the present invention.

Claims (10)

1. A construction method for reinforcing the inner side of a silo is characterized in that: the method comprises the following steps:

s1, hoisting the repaired template assembly into a silo, and connecting and fixing:

hoisting the repaired template assembly, placing the repaired template assembly into a silo from the top opening of the silo, and fastening and connecting the repaired template assembly with the silo through a bearing assembly;

s2, moving the repairing template assembly to a specified construction height, and constructing a first repairing space:

the height of the repairing template assembly is adjusted, the repairing template assembly is moved to a designated construction height, then the repairing template assembly is stretched to be in contact with the inner wall of the silo, and a bottom template and a side template of the repairing template assembly and the inner wall of the silo form a first repairing space in the shape of an annular groove with an opened top;

s3, pouring a first reinforcing layer:

carrying out bar planting construction and steel bar binding in the first repair space, and then pouring concrete to form a first reinforcing layer;

s4, removing the bottom template:

when the concrete of the first reinforcing layer reaches the form removal strength, removing the bottom formwork;

s5, moving the side template:

after the bottom template is disassembled, the side templates are recovered in the direction away from the first reinforcing layer and separated from the first reinforcing layer;

s6, lifting the repairing template assembly, and constructing a second repairing space:

after the side templates are separated from the first reinforcing layer, the repairing template assembly is lifted upwards for a certain distance, the side templates move towards the direction close to the inner wall of the silo until the side templates are in close contact with the upper part of the outer side surface of the first reinforcing layer, and a second repairing space is formed by the side templates, the top surface of the first reinforcing layer and the inner wall of the silo;

s7, pouring a second reinforcing layer:

carrying out bar planting construction and steel bar binding in the second repairing space, and then pouring concrete to form a second reinforcing layer;

and S8, repeating the steps S4-S7 until the reinforced concrete on the inner wall of the silo is completely constructed, and dismantling the repaired template assembly.

2. The construction method for reinforcing the inner side of the silo according to claim 1, wherein in the step S2, when the first repair space is constructed, the repair formwork assembly is extended through a first telescopic oil cylinder, the first telescopic oil cylinder is horizontally fixed on a support frame of the repair formwork assembly, a piston rod of the first telescopic oil cylinder is fixed with the side formwork, the first telescopic oil cylinder drives the side formwork and the bottom formwork to move towards the inner wall direction of the silo until the bottom formwork is in close contact with the inner wall of the silo, and at this time, the side formwork, the bottom formwork and the inner wall of the silo form the first repair space.

3. The construction method for silo internal reinforcement according to claim 2, wherein the repair formwork assembly comprises at least two sideforms, the number of the bottom formwork and the sideforms is the same,

the side templates are arc-shaped plates concentrically arranged with the silo and are vertically arranged in parallel with the inner wall of the silo;

the bottom template is horizontally fixed at the bottom of the side template and is vertical to the side template, and the bottom template is an arc-shaped plate concentrically arranged with the bottom surface of the silo;

the bottom template and the side templates are detachably connected.

4. The construction method for inner reinforcement of a silo according to claim 1, wherein in the steps S2 and S6, the repair formwork assembly is adjusted in height by the load bearing assembly, and the load bearing assembly comprises:

at least two bearing cross beams which are fixed on the top opening of the silo in parallel;

at least two second telescopic oil cylinders are vertically fixed on the bearing cross beam;

the upper end of the lifting pipe is connected with the second telescopic oil cylinder, and the lower end of the lifting pipe is fixedly connected with the support frame of the repair template assembly;

the lifting pipe is driven to lift through the extension and retraction of the second telescopic oil cylinder, so that the repairing template assembly is driven to lift.

5. The construction method for inner reinforcement of a silo according to claim 2, wherein the support frame of the repair formwork assembly comprises a transverse support pipe, a vertical support pipe and an inclined pipe for increasing strength;

the transverse supporting tube comprises an outer tube and an inner tube, the inner tube is sleeved inside the outer tube, a slide way is arranged on the inner wall of the outer tube, and a sliding block is correspondingly arranged on the outer wall of the inner tube, so that the inner tube can slide along the length direction of the outer tube.

6. The construction method for reinforcing the inner side of the silo as claimed in claim 5, wherein the cylinder barrel of the first telescopic oil cylinder is fixed on the outer pipe, and the piston rod of the first telescopic oil cylinder is fixedly connected with the side template; the outer end of the inner pipe is fixed with the side template;

in the steps S2, S5 and S6, the first telescopic oil cylinder drives the side die plates to extend or retract, and the inner pipe slides along the outer pipe to limit the moving track of the side die plates.

7. The construction method for reinforcing the inner side of the silo as claimed in claim 6, wherein in the step S2 and the step S6, after the side formworks are extended in place, in order to form a complete closed-loop structure in the first repair space or the second repair space, a second side formwork is arranged between two adjacent side formworks, and a second bottom formwork is arranged between two adjacent bottom formworks;

the second side template is an arc-shaped plate which is vertically arranged; the second bottom template is an arc-shaped plate horizontally arranged.

8. The construction method for reinforcing the inner side of a silo as claimed in claim 7, wherein the second bottom formwork is removed after the bottom formwork is removed in step S4, the second side formwork is removed, and then the step S5 is performed to move the side formworks.

9. The construction method for reinforcing the inner side of the silo according to claim 8, wherein the two side end surfaces of the side formworks are provided with protruding sliding blocks with trapezoidal orthographic projection shapes, the two side end surfaces of the second side formwork, which are butted with the side formworks, are provided with sliding rails, the sliding rails are of groove structures with trapezoidal orthographic projection shapes, and the sliding rails are matched with the protruding sliding ways in shape;

in the step S2 and the step S6, when the second side template is installed, the trapezoidal groove slides downwards along the trapezoidal protruding part;

in step S4, when the second side mold plate is removed, the trapezoidal groove slides upward along the trapezoidal protruding portion.

10. The construction method for reinforcing the inner side of the silo as claimed in claim 8, wherein sealing strips are arranged on the end surfaces of the bottom formwork and the second bottom formwork, which are close to the inner wall of the silo.

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