Retrofitting Structure on the Top of Existing Silo and Method for Retrofitting the Top of Existing Silo

Abstract

The present invention provides a structure for adding a top to an existing silo and a method for adding a top to an existing silo. Among them, the structure for adding a top to an existing silo is added to an existing silo. The existing silo includes a silo body and a bottom frame arranged on the ground. The bottom frame includes a first bottom frame and a second bottom frame. The first bottom frame is located on the outer peripheral side of the second bottom frame. The silo body is connected above the first bottom frame and includes a reinforced concrete pier, anchor bolts, lattice columns and a truss. The reinforced concrete pier is fixedly arranged on the second bottom frame. One end of the anchor bolt is buried in the reinforced concrete pier. The lower end of the lattice column is fixedly connected to the other end of the anchor bolt. The upper end of the lattice column penetrates through the silo body. The truss is connected to the upper end of the lattice column and is located above the silo body. The structure for adding a top to an existing silo of the present invention has the characteristics of economy and safety.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering, and particularly to a structure for adding a building on the top of an existing silo and a method for adding a building on the top of an existing silo. Background Art

[0002] The application and popularization of the renovation and transformation of industrial buildings in China are later than those in developed countries. Due to economic, technological, and value concept issues, in urban renewal, the method of "demolishing and rebuilding on a large scale" is mostly adopted, which not only has a high renovation cost but also consumes a large amount of manpower and material resources. There are only a few self-initiated application examples in China, and the scale is often small, and the methods are not perfect enough, and no systematic theory has been formed. Due to factors such as the acceleration of the country's urbanization process, the promulgation of policies, and human needs, the demand for existing buildings has gradually shifted from large-scale demolition and reconstruction to renovation and transformation, which puts forward higher requirements for the renovation technology of existing industrial buildings. A silo is a warehouse for storing bulk materials. Generally, a silo includes a silo bottom frame arranged on the ground and a silo body. The silo body is arranged above the silo bottom frame, and the silo bottom frame is used to support the silo body. The planar shape of the silo body can be square, rectangular, polygonal, circular, etc. As a landmark building in industrial buildings, the construction of a silo has strong industrial characteristics.

[0003] The traditional platform added on the top of an existing silo is built together with the silo during the new construction process. When adding a building on an existing silo, the original bearing capacity of the silo cannot bear the weight of the newly added platform. Currently, generally, after the silo is strengthened, a platform is added on the original silo, but there are the following problems: the silo has problems of low vertical bearing capacity and great difficulty in reinforcement, resulting in relatively low structural safety of the added building and relatively high addition cost.

[0004] Therefore, it is necessary to provide an economical and safe structure for adding a building on the top of an existing silo and a method for adding a building on the top of an existing silo. Summary of the Invention

[0005] The first object of the present invention is to provide an economical and safe structure for adding a building on the top of an existing silo.

[0006] The second object of the present invention is to provide an economical and safe method for adding a building on the top of an existing silo.

[0007] To achieve the above first object, the present invention provides a superstructure addition structure for an existing silo, which is added to the existing silo. The existing silo includes a silo body and a bottom frame arranged on the ground. The bottom frame includes a first bottom frame and a second bottom frame. The first bottom frame is located on the outer peripheral side of the second bottom frame. The silo body is connected above the first bottom frame and includes a reinforced concrete pier, anchor bolts, lattice columns and a truss. The reinforced concrete pier is fixedly arranged on the second bottom frame. One end of the anchor bolt is embedded in the reinforced concrete pier. The lower end of the lattice column is fixedly connected to the other end of the anchor bolt. The upper end of the lattice column penetrates through the silo body. The truss is connected to the upper end of the lattice column and is located above the silo body.

[0008] Compared with the prior art, by arranging the reinforced concrete pier on the original inner second bottom frame of the existing silo, while reinforcing the second bottom frame, and embedding anchor bolts in the reinforced concrete pier, and adding lattice columns on the reinforced concrete pier, the present invention provides vertical bearing capacity for the superstructure addition, avoiding problems such as large subsequent reinforcement difficulty and high superstructure addition cost caused by directly installing the new building on the silo, and at the same time avoiding damaging the original second bottom frame when directly embedding anchor bolts on the original second bottom frame, improving the safety of the superstructure addition structure, with clear and reliable force. Therefore, the superstructure addition structure for the existing silo of the present invention has the characteristics of economy and safety.

[0009] Preferably, the superstructure addition structure for the existing silo further includes a positioning plate provided with positioning holes. The positioning plate is arranged on the reinforced concrete pier, and the anchor bolts pass through the positioning holes.

[0010] Preferably, the lattice column includes a first lattice column and a second lattice column. The lower end of the first lattice column is fixedly connected to the anchor bolt. The upper end of the first lattice column is fixedly connected to the lower end of the second lattice column. The upper end of the second lattice column is fixedly connected to the truss.

[0011] Preferably, the truss includes a bottom assembly, intermediate members and a top assembly. The bottom assembly is fixedly connected to the upper end of the lattice column. The intermediate members are fixedly connected between the top assembly and the bottom assembly. The top assembly is arranged parallel to the bottom assembly above the bottom assembly. The bottom assembly includes lower chords and first horizontal connecting members. A plurality of the lower chords are arranged in parallel. A plurality of the first horizontal connecting members are fixedly connected between two adjacent parallel lower chords. The top assembly includes upper chords and second horizontal connecting members. A plurality of the upper chords are arranged in parallel. A plurality of the second horizontal connecting members are fixedly connected between two adjacent parallel upper chords. The intermediate members include web members and diagonal members. The web members are vertically connected between the upper chords and the lower chords. The diagonal members are obliquely connected between the upper chords and the lower chords.

[0012] To achieve the second object, the present invention provides a method for adding a building on the top of an existing silo, including the following steps: (1) arranging a reinforced concrete pier on the inner bottom frame of the existing silo and embedding one end of an anchor bolt in the reinforced concrete pier; (2) cutting the top roof of the silo body of the existing silo and hoisting the top roof to a preset stacking area on the ground surface; (3) vertically hoisting the lattice column through the top of the silo body into the silo body, fixedly connecting the lower end of the lattice column to the other end of the anchor bolt, and making the upper end of the lattice column pass outside the silo body; (4) adding a truss on the upper end of the lattice column; (5) installing peripheral enclosure and decoration on the periphery of the truss.

[0013] Compared with the prior art, by arranging the reinforced concrete pier on the original inner bottom frame of the existing silo, the present invention reinforces the bottom frame, embeds anchor bolts in the reinforced concrete pier, and adds a lattice column on the reinforced concrete pier, thereby providing vertical bearing capacity for the added building, avoiding problems such as high subsequent reinforcement difficulty and high addition cost caused by directly installing a new building on the silo, and at the same time avoiding damaging the original bottom frame when directly embedding anchor bolts on the original bottom frame, improving the safety of the added structure, with clear and reliable force. Therefore, the method for adding a building on the top of an existing silo of the present invention has the characteristics of economy and safety.

[0014] Preferably, in the step (1), the anchor bolt is positioned on the reinforced concrete pier by using the positioning holes of a positioning plate.

[0015] Preferably, in the step (2), cross steel braces are provided. The cross steel braces include two steel brace members which are cross-fixed together. A plurality of cross steel braces are installed on the building columns of the silo tower from bottom to top, thereby strengthening the silo tower to reduce the influence of the horizontal force transmitted by the added building on the silo tower.

[0016] Preferably, in the step (4), the truss includes a plurality of lower chord members, upper chord members, web members, diagonal members, first horizontal connection members and second horizontal connection members. Each of the lower chord members is installed on the lattice column in parallel. Each of the first horizontal connection members is fixedly connected between two adjacent parallel lower chord members. Each of the web members is installed vertically on the lower chord members. Each of the upper chord members is installed on the web members in parallel. Each of the second horizontal connection members is fixedly connected between two adjacent parallel upper chord members to form a frame as a whole, and each of the diagonal members is obliquely connected between the lower chord members and the upper chord members on the periphery of the frame as a whole.

[0017] Preferably, in the step (4), when adding the truss, vertical supports are provided for the cantilever members of the truss. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the existing silo.

[0019] Figure 2 is a schematic structural view of the structure after adding the structure for adding a building on the top of the existing silo of the present invention to the existing silo.

[0020] Figure 3 is Figure 2 a schematic structural view after removing part of the silo in

[0021] Figure 4 is a schematic structural view of the connection between the reinforced concrete pier and the second bottom frame of the present invention.

[0022] Figure 5 is a schematic structural view of the connection between the reinforced concrete pier and the anchor bolts of the present invention.

[0023] Figure 6 is a schematic structural view of the positioning plate of the present invention.

[0024] Figure 7 is a schematic structural view of the silo tower after reinforcement of the present invention.

[0025] Figure 8 is a schematic structural view when hoisting the lattice column to the silo body.

[0026] Figure 9 is a schematic structural view when installing the lower chord member at the upper end of the lattice column.

[0027] Figure 10 This is a schematic structural diagram after the truss of the present invention is installed. Detailed implementation manners

[0028] In order to elaborate on the technical content and structural features of the present invention in detail, the following further description is made in conjunction with the implementation manners and with reference to the drawings.

[0029] Please refer to Figures 1 to 4 , the existing silo top addition structure 100 of the present invention is added to the existing silo 200. The existing silo 200 includes a silo body 201 and a bottom frame 202 arranged on the ground. The bottom frame 202 includes a first bottom frame 202a and a second bottom frame 202b. The first bottom frame 202a is located on the outer peripheral side of the second bottom frame 202b, and the silo body 201 is connected above the first bottom frame 202a. The existing silo top addition structure 100 includes a reinforced concrete pier 1, anchor bolts 2, lattice columns 3, and a truss 4. The reinforced concrete pier 1 is fixedly arranged on the second bottom frame 202b. Specifically, after the second bottom frame 202b is reinforced, the reinforced concrete pier is arranged on the second bottom frame 202b, and the reinforced concrete pier 1 can be connected to the second bottom frame 202b by the way of implanting steel bars; one end of the anchor bolt 2 is embedded in the reinforced concrete pier 1. Specifically, the anchor bolt 2 can adopt the existing high-strength anchor bolt 2. The anchor bolt 2 is in an L shape, but is not limited thereto; the lower end of the lattice column 3 is fixedly connected to the other end of the anchor bolt 2, the upper end of the lattice column 3 penetrates through the silo body 201, and the truss 4 is connected to the upper end of the lattice column 3 and is located above the silo body 201.

[0030] Please refer to Figure 5 and Figure 6 , the existing silo top addition structure 100 of the present invention further includes a positioning plate 5. The positioning plate 5 is provided with a positioning hole 51. The positioning plate 5 is arranged on the reinforced concrete pier 1, and the anchor bolt 2 passes through the positioning hole 51. The positioning hole 51 is used to position the anchor bolt 2, so that the anchor bolt 2 can be accurately arranged on the reinforced concrete pier 1.

[0031] Please refer to Figure 3 , the lattice column 3 includes a first lattice column 31 and a second lattice column 32. The lower end of the first lattice column 31 is fixedly connected to the anchor bolt 2, the upper end of the first lattice column 31 is fixedly connected to the lower end of the second lattice column 32, and the upper end of the second lattice column 32 is fixedly connected to the truss 4. Among them, the lower end of the first lattice column 31 can be connected to the anchor bolt 2 by an assembly method, and the upper end of the first lattice column 31 is fixedly connected to the lower end of the second lattice column 32 in the form of bolts and welding, but is not limited thereto.

[0032] Please continue to refer to Figure 3, the truss 4 includes a bottom component, intermediate members, and a top component. The bottom component is fixedly connected to the upper end of the lattice column 3. The intermediate members are fixedly connected between the top component and the bottom component. The top component is arranged parallel to the upper side of the bottom component. Specifically, the bottom component includes lower chord members 411 and first horizontal connecting members 412. A plurality of lower chord members 411 are arranged in parallel. A plurality of first horizontal connecting members 412 are fixedly connected between two adjacent parallel lower chord members 411. The top component includes upper chord members 431 and second horizontal connecting members 432. A plurality of upper chord members 431 are arranged in parallel. A plurality of second horizontal connecting members 432 are fixedly connected between two adjacent parallel upper chord members 431. The intermediate members include web members 421 and diagonal members 422. The web members 421 are vertically connected between the upper chord members 431 of the top component and the lower chord members 411 of the bottom component. The diagonal members 422 are obliquely connected between the upper chord members 431 of the top component and the lower chord members 411 of the bottom component. Among them, the web members 421 and the diagonal members 422 are located on the outer peripheral side of the truss 4, but not limited thereto.

[0033] It should be noted that the above fixed connection methods can adopt existing bolt fixation, bolt and welding fixation, etc. The existing silo 200 has a plurality of silo bodies 201. Lattice columns 3 can be respectively arranged in some of the silo bodies 201, and then the truss 4 is installed on each lattice column 3.

[0034] Please refer to Figures 4 to 10 , in an embodiment, the method for adding a top structure to an existing silo 200 of the present invention includes the following steps:

[0035] S11, set a reinforced concrete pier 1 on the inner bottom frame 202 (i.e., the second bottom frame 202b) of the existing silo 200, and bury one end of the anchor bolt 2 in the reinforced concrete pier 1;

[0036] S12, cut open the top roof of the silo body 201 of the existing silo 200, and lift the top roof to a preset stacking area on the ground surface;

[0037] S13, vertically lift the lattice column 3 through the top of the silo body 201 into the silo body 201, fixedly connect the lower end of the lattice column 3 to the other end of the anchor bolt 2, and make the upper end of the lattice column 3 pass through the outside of the silo body 201;

[0038] S14, add a truss 4 to the upper end of the lattice column 3. When adding the truss 4, vertically support the cantilever members of the truss 4;

[0039] S15, install the outer enclosure and decoration around the truss 4.

[0040] Among them, in step S11, before construction, the existing silo 200 is first identified and evaluated, and the bearing capacity analysis is carried out on the force-bearing members (beams, slabs, columns) such as the bottom frame 202, the silo tower 300, and the silo body 201. At the same time, according to the design scheme, the force-bearing members of the entire building after adding the building are reviewed and strengthened.

[0041] Please refer to Figures 4 to 10 , in another embodiment, the method for adding a building on the top of the existing silo 200 of the present invention includes the following steps:

[0042] S21, a reinforced concrete pier 1 is set on the inner bottom frame 202 (i.e., the second bottom frame 202b) of the existing silo 200. One end of the anchor bolt 2 is buried in the reinforced concrete pier 1, and the anchor bolt 2 is positioned on the reinforced concrete pier 1 by using the positioning hole 51 of a positioning plate 5;

[0043] S22, the top roof of the silo body 201 of the existing silo 200 is cut open, and the top roof is hoisted to a preset stacking area on the bottom surface; the silo tower 300 is strengthened to reduce the influence of the horizontal force transmitted by the added building on the silo tower 300;

[0044] S23, the lattice column 3 is vertically hoisted into the silo body 201 through the top of the silo body 201, the lower end of the lattice column 3 is fixedly connected to the other end of the anchor bolt 2, and the upper end of the lattice column 3 passes outside the silo body 201;

[0045] S24, a truss 4 is added to the upper end of the lattice column 3. The truss 4 includes a plurality of lower chord members 411, upper chord members 431, web members 421, diagonal members 422, first horizontal connecting members 412, and second horizontal connecting members 432. Each lower chord member 411 is installed on the lattice column 3 in parallel, each first horizontal connecting member 412 is fixedly connected between two adjacent parallel lower chord members 411, each web member 421 is installed vertically on the lower chord member 411, each upper chord member 431 is installed on the web member 421 in parallel, each second horizontal connecting member 432 is fixedly connected between two adjacent parallel upper chord members 431 to form a frame as a whole, and each diagonal member 422 is obliquely connected between the lower chord member 411 and the upper chord member 431 on the periphery of the frame as a whole; when adding the truss 4, vertical support is provided for the cantilever members of the truss 4;

[0046] S25, the peripheral enclosure and decoration are installed on the periphery of the truss 4.

[0047] Among them, in step S21, before construction, the existing silo 200 is identified and evaluated, and the bearing capacity analysis is carried out on the stress-bearing components (beams, slabs, columns) such as the bottom frame 202, the silo tower 300, and the silo body 201. At the same time, according to the design scheme, the stress-bearing components of the entire building after the additional building are reviewed and strengthened. In step S22, a cross steel support 301 is provided. The cross steel support 301 includes two steel support members 301a. The two steel support members 301a are cross-fixed together, and several cross steel supports 301 are installed on the floor columns of the silo tower 300 from bottom to top, so as to strengthen the silo tower 300.

[0048] In summary, the present invention sets a reinforced concrete pier 1 on the original second bottom frame 202b located inside the existing silo 200 to reinforce the second bottom frame 202b, and pre-buries anchor bolts 2 in the reinforced concrete pier 1. By adding a lattice column 3 on the reinforced concrete pier 1, vertical bearing capacity is provided for the additional building, avoiding problems such as high subsequent reinforcement difficulty and high additional construction cost caused by directly installing the new building on the silo. At the same time, it avoids damaging the original second bottom frame 202b when directly pre-burying anchor bolts on the original second bottom frame 202b, improving the safety of the additional structure, with clear and reliable force-bearing. Therefore, the additional structure 100 on the top of the existing silo of the present invention has the characteristics of economy and safety. Also, in terms of engineering quality, through the assembly production process of steel structures, its steel structure construction has characteristics such as standardization and batch production, and can ensure construction quality and construction accuracy during the construction process; in terms of mechanization level, more mechanical hoisting and aerial installation are adopted, and its mechanized installation level is higher, saving the number of construction personnel and labor costs; in terms of green environmental protection, the steel structure has a lighter self-weight, and the same transport vehicle can load more components, achieving the effect of green environmental protection.

[0049] The above-disclosed are only the preferred examples of the present invention, and the scope of the rights of the present invention cannot be limited thereby. Therefore, all equivalent changes made according to the claims of the present invention fall within the scope covered by the present invention.

Claims

1. A superstructure added to the top of an existing silo, which is added to the existing silo. The existing silo includes a silo body and a bottom frame arranged on the ground. The bottom frame includes a first bottom frame and a second bottom frame. The first bottom frame is located on the outer peripheral side of the second bottom frame. The silo body is connected above the first bottom frame. It is characterized in that, It includes a reinforced concrete pier, anchor bolts, a positioning plate, lattice columns and a truss. The reinforced concrete pier is fixedly arranged on the second bottom frame. One end of the anchor bolt is embedded in the reinforced concrete pier. The lower end of the lattice column is fixedly connected to the other end of the anchor bolt. The upper end of the lattice column penetrates through the silo body. The truss is connected to the upper end of the lattice column and is located above the silo body. The positioning plate is provided with positioning holes. The positioning plate is arranged on the reinforced concrete pier. The anchor bolt passes through the positioning holes. The lattice column includes a first lattice column and a second lattice column. The lower end of the first lattice column is fixedly connected to the anchor bolt. The upper end of the first lattice column is fixedly connected to the lower end of the second lattice column. The upper end of the second lattice column is fixedly connected to the truss.

2. The additional construction structure on the top of the existing silo according to claim 1, characterized in that The truss includes a bottom assembly, intermediate members and a top assembly. The bottom assembly is fixedly connected to the upper end of the lattice column. The intermediate members are fixedly connected between the top assembly and the bottom assembly. The top assembly is arranged parallel to the bottom assembly above it. The bottom assembly includes lower chord members and first horizontal connecting members. A plurality of the lower chord members are arranged in parallel. A plurality of the first horizontal connecting members are fixedly connected between two adjacent parallel lower chord members. The top assembly includes upper chord members and second horizontal connecting members. A plurality of the upper chord members are arranged in parallel. A plurality of the second horizontal connecting members are fixedly connected between two adjacent parallel upper chord members. The intermediate members include web members and diagonal members. The web members are vertically connected between the upper chord members and the lower chord members. The diagonal members are obliquely connected between the upper chord members and the lower chord members.

3. A method for adding a structure on the top of an existing silo using the existing silo top addition structure as described in claim 1, characterized in that, It includes the following steps: (1) Set a reinforced concrete pier on the inner bottom frame of the existing silo, and embed one end of the anchor bolt in the reinforced concrete pier; (2) Cut open the top roof of the silo body of the existing silo, and lift the top roof to a preset stacking area on the ground surface; (3) Vertically lift the lattice column into the silo body through the top of the silo body, fixedly connect the lower end of the lattice column to the other end of the anchor bolt, and make the upper end of the lattice column penetrate outside the silo body; (4) Build a truss on the upper end of the lattice column; (5) Install the peripheral enclosure and decoration on the periphery of the truss.

4. The method for adding a structure on the top of an existing silo according to claim 3, characterized in that, In the step (1), position the anchor bolt on the reinforced concrete pier by using the positioning holes of a positioning plate.

5. The method for adding a structure on the top of an existing silo according to claim 3, characterized in that, In the step (2), provide cross steel supports. The cross steel supports include two steel support members. The two steel support members are cross-fixed together. Install a plurality of cross steel supports on the building columns of the silo tower from bottom to top, so as to reinforce the silo tower and reduce the influence of the horizontal force transmitted by the added building on the silo tower.

6. The method for adding a structure on the top of an existing silo according to claim 3, characterized in that In the step (4), the truss includes a plurality of lower chord members, upper chord members, web members, diagonal members, first horizontal connection members and second horizontal connection members. The lower chord members are installed on the lattice column in parallel, the first horizontal connection members are fixedly connected between two adjacent parallel lower chord members, the web members are installed on the lower chord members vertically, the upper chord members are installed on the web members in parallel, the second horizontal connection members are fixedly connected between two adjacent parallel upper chord members to form a whole frame, and the diagonal members are obliquely connected between the lower chord members and the upper chord members on the periphery of the whole frame.

7. The method for adding a building on the top of an existing silo according to claim 3, characterized in that, In the step (4), when adding the truss, vertical support is provided for the cantilever members of the truss.

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