KR102430362B1 - Structure for precast construction of inner cone of silo and precast construction method of inner cone of silo using the same - Google Patents

Abstract

Disclosed are a structure for silo inner cone precast construction and a precast construction method of a silo inner cone using the same, capable of not only significantly shortening a construction period of the silo by minimizing construction work, disassembly work, and concrete site casting work, but also significantly reducing a rate of a safety accident by minimizing a work of a worker at height. The structure for Silo inner cone precast construction and the precast construction method of a silo inner cone using the same have the effects of significantly shortening the construction period of the silo, minimizing the number of field workers to drastically reduce costs of silo construction, significantly reducing a rate of a safety accident by minimizing a work of a worker at height when constructing an inner cone, allowing a standardized construction to be performed so as to not only shorten the construction period, but also to construct a silo having an excellent quality.

Description

Structure for precast construction of cone inside silo and precast construction method of cone inside silo using the same

The present invention relates to a structure for precast construction of a cone inside a silo and a method for precast construction of a cone inside a silo using the same, and more particularly, to a silo that allows the internal cone to be constructed inside a tower-type silo to be constructed by a precast method It relates to a structure for internal cone precast construction and a precast construction method for a silo internal cone using the same.

In general, a silo refers to a tower-shaped structure for storage fermentation of grasses or storage of grains, grains, cement, aggregates, etc.

There are various types of silos depending on the external shape, building materials, and installation site, and the building materials are mainly reinforced concrete, cement bricks, and steel plates.

The tower-type silo is the most popular silo structure among silos, and is composed of a foundation, a cylindrical wall, and a roof at the top. An inner cone formed in a conical shape is generally installed. In addition, the interior of the silo may be divided into several spaces by a plurality of partition walls, and a discharge port for moving the stored material may be formed in the inner cone or partition wall.

By the way, the inner cone constructed inside the tower-type silo requires a large amount of formwork made of wood and steel for its construction, and also has to go through a lot of copper work, and the cross section becomes smaller toward the top, making concrete pouring and curing difficult. Since it has to be done in stages, it takes a lot of time and manpower to construct it.

In other words, it took a lot of time and money to construct the cone inside the concrete cast-in-place inside the silo, which became the biggest cause of delay in the construction of the silo. There is this.

On the other hand, since the wall of a tower-type silo is a cylindrical structure with a constant annular cross-section, there has been a case of constructing the wall of the silo by applying a slip foam that can be continuously poured and cured. However, if the entire wall is constructed with slip foam, the workability of the wall can be improved, but since the inner cone has to be installed in a narrow space inside, the working environment becomes worse and the construction period of the inner cone is rather increased and there is a risk of safety accidents. There is a problem with this rising.

Republic of Korea Patent Publication No. 10-0381792 (2003.04.14.) Republic of Korea Patent Publication No. 10-1314170 (2013.09.26.) Republic of Korea Patent Publication No. 10-1171746 (2012.08.01.) Republic of Korea Patent Publication No. 10-1851280 (2018.04.17.)

It is an object of the present invention to significantly reduce the construction period of a silo by minimizing temporary work, dismantling work, and concrete on-site pouring work. An object of the present invention is to provide a structure for cone precast construction and a precast construction method of a cone inside a silo using the same.

Another object of the present invention is to produce the main structural elements for constructing the lower wall structure and the inner cone through precast at the factory and then assemble them on the spot, so that the construction is simple and the construction period can be shortened as well as excellent quality. An object of the present invention is to provide a structure for precast construction of a cone inside a silo that can construct a silo, and a method for precast construction of a cone inside a silo using the same.

In order to achieve the above object, the present invention provides a temporary structure for installing a cone installed in the center of a slab located at the top of the lower wall structure, a cone top base mounted on the top of the temporary structure for installing the cone, and the cone top base and the lower wall structure. A plurality of inner cone precast blocks are arranged in a cone shape so that the upper and lower portions are supported by the upper part and are connected to form an inner cone, and the inner cone precast block and the cone top include a cone top constructed on top of the base base We present the structure for precast construction of cone inside the silo.

In addition, the present invention supports the lower end of the inner cone precast block on the upper surface of the lower wall structure so that the position of the inner cone precast block can be aligned when the inner cone precast block is placed on the lower wall structure. It may further include a plurality of stoppers to be installed.

For example, the temporary structure for installing the cone includes a truss-shaped support installed in the center of the slab located at the top of the lower wall structure, and the height of the support to correspond to the height of the inner cone to be installed between the support and the slab. A plurality of support lifting hydraulic devices that can be adjusted, and a lower end connected to a slab located at the uppermost end of the lower wall structure, and a plurality of fall-preventing temporary members connected to the upper end and connected to the support to prevent the support from being overturned. can

For example, the inner cone precast block includes a block main body formed in a trapezoidal shape of an upper and lower beam, a plurality of connecting reinforcing bars reinforced to the block main body so as to protrude from both sides of the block main body, and the outside of the block main body It may include a concrete pouring depression formed on one side and the upper end of the surface.

Here, the inner cone precast block is fixed by connecting the upper and lower ends of the block body to the upper portions of the cone top base and the lower wall structure through a plurality of connecting means, and connecting reinforcing bars protruding from both sides of the adjacent block body. After connecting the blocks, the adjacent block body can be connected by pouring concrete into the concrete pouring depression.

For another example, the inner cone precast block may include a block body portion formed in a trapezoidal shape of an upper and lower beam, and a connection member fastening groove portion formed at predetermined intervals on both sides of the outer surface of the block body portion.

Here, the inner cone precast block connects and fixes the upper and lower ends of the block body to the upper portions of the cone top base and the lower wall structure through a plurality of connecting means, and connecting member fastening grooves formed in adjacent block body parts After the connecting member is seated on the , the neighboring block body parts can be connected by fixing the connecting members to the neighboring block body parts through a fixing member.

In order to achieve the above object, the present invention provides a temporary structure installation step for installing a cone for installing a temporary structure for installing a cone on a slab located at the top of the lower wall structure, and a cone top base and lower wall structure mounted on the top of the temporary structure for installing the cone An inner cone forming an inner cone by placing a plurality of inner cone precast blocks in a cone shape so that the upper and lower portions are supported by the upper surface of the A precast construction method of the cone inside the silo including the construction stage is presented.

For example, the installation step of the temporary structure for installing the cone includes a hydraulic device installation step of installing a plurality of support lifting hydraulic devices on a slab located at the top of the lower wall structure, and mounting a truss-shaped support on the support lifting hydraulic device. A support mounting step, a fall prevention temporary member installation step of connecting a plurality of fall prevention temporary members to the slab and the support located at the top of the lower wall structure, and operating the hydraulic device for lifting the support to correspond to the height of the inner cone to be constructed It may include a support height adjustment step of adjusting the height of the support.

Here, the inner cone construction step includes a cone top base mounting step of mounting a cone top base on the upper portion of the temporary structure for installing the cone, and lifting the inner cone precast block so that the lower end is supported by the cone lower round slope beam and the upper end is the cone The inner cone precast block arrangement step of arranging the inner cone precast block in a cone shape on the upper part of the lower wall structure so as to be supported by the cone top base mounted on the upper part of the temporary structure for installation; It may include an internal cone precast block connection step of connecting the cone precast blocks to each other, and a cone top installation step of forming a cone top by pouring concrete on the top of the cone top base and the inner cone precast block.

On the other hand, in the step of arranging the inner cone precast block, the lower end of the inner cone precast block is supported by the stopper installed on the cone lower round inclined portion and the cone lower round inclined beam precast formwork, and at the same time, the inner cone precast block has a predetermined depth on the lower surface. It may be arranged in a cone shape on the upper part of the lower wall structure so that the upper end of the fixed hardware protruding outside the upper surface of the cone lower round inclined beam is inserted into the formed connection slot.

For example, the step of connecting the inner cone precast block is a rebar connecting step of connecting the connecting reinforcing bars facing each other of the inner cone precast blocks adjacent to each other, and the inner cone precast block is provided at the upper end and one side of the outer surface of the block Concrete pouring It may include a concrete pouring step of curing by pouring concrete into the depression.

For another example, the inner cone precast block connection step includes a connecting member seating step of seating the connecting member in the connecting member fastening groove provided on the outer peripheral surface of the inner cone precast block adjacent to each other, and the connecting member seated in the connecting member fastening groove. It may include a connecting member fixing step of fixing the connecting member to the inner cone precast block adjacent to each other using the fixing member.

As described above, the structure for precast construction of the silo inner cone and the precast construction method of the silo inner cone using the same according to the present invention can be constructed by simply assembling in the field by pre-fabricating the components necessary for the construction of the inner cone at the factory. The precast method enables rapid construction of the cone inside the silo.

Accordingly, the installation and dismantling of copper bars and forms at the site is reduced, and by minimizing the installation and dismantling of various temporary workbenches, stairs, and safety facilities, the construction period of the silo is greatly shortened and the number of field workers can be minimized. Thus, the silo construction cost can be greatly reduced, and the safety accident rate can be greatly reduced by minimizing the work of the worker at high altitude during the construction of the inner cone.

In addition, the main components for constructing the inner cone are produced in the factory through the precast method, and then simply assembled on site for standardization construction, which can further shorten the construction period and construct high-quality silos. There is an effect that can be done.

Other effects of the present invention will be clearly understood and understood by experts or researchers in the art through the specific details described below, or during the course of carrying out the present invention.

1 is a view for explaining a structure for precast construction inside a silo according to the present invention
2 is a diagram for explaining an inner cone precast block according to an embodiment of the present invention;
3 is a view showing a state in which the inner cone precast block of FIG. 2 is arranged in a cone shape;
4 is a diagram for explaining an inner cone precast block according to another embodiment of the present invention;
5 is a view showing a state in which the inner cone precast block is supported by a stopper;
6 is a flowchart for explaining the process of constructing a silo using a precast construction method of a cone inside a silo according to an embodiment of the present invention;
7 is a view for explaining the construction stage of the lower wall structure;
8 is a view for explaining the process of constructing a cone lower round inclined beam
9 is a plan view showing a state in which the cone lower round inclined beam precast formwork is installed;
10 is a flowchart for explaining the internal cone precast construction step
11 is a view for explaining the installation step of a temporary structure for installing a cone
12 is a flowchart for explaining the installation step of a temporary structure for installing a cone
13 is a view for explaining the internal cone construction step
14 is a flowchart for explaining the internal cone construction step
15 is a flowchart for explaining the connection step of the inner cone precast block as shown in FIG.
16 is a flowchart for explaining the connection step of the inner cone precast block as shown in FIG.
17 is a view showing the process of constructing the upper wall structure by slip foam;
18 is a view showing a state in which the roof slab is installed on the upper wall structure;
19 is a view showing a silo constructed by the silo construction method using precast and slip foam according to the present invention

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

With reference to the drawings below, preferred embodiments of the present invention will be described in more detail.

1 is a view for explaining a structure for precast construction inside a silo according to the present invention, FIG. 2 is a view for explaining an inner cone precast block according to an embodiment of the present invention, and FIG. 3 is FIG. It is a view showing a state in which the inner cone precast block is arranged in a cone shape, FIG. 4 is a view for explaining the inner cone precast block according to another embodiment of the present invention, and FIG. 5 is an inner cone precast block It is a figure which shows the state supported by this stopper.

1 to 5, the structure for precast construction inside the silo according to the present invention is a temporary structure for installing a cone 130, a cone top base 134, an internal cone precast block 141 and a cone top 148 ) may be included.

The temporary structure 130 for installing the cone may be installed in the central portion of the slab 118 located at the top of the lower wall structure 110 .

For example, the temporary structure 130 for installing the cone may include a support 135 , a hydraulic device for lifting and lowering the support 132 , and a fall prevention temporary member 133 .

The support 135 is formed in the form of a truss and may be installed above the base frame 131 installed in the central portion of the slab 118 located at the uppermost end of the lower wall structure 110 .

A plurality of hydraulic devices 132 for lifting and lowering the support are installed between the support 135 and the slab 118, that is, between the support 135 and the base frame 131 to correspond to the height of the inner cone 140 to be constructed. The height of the support 135 can be adjusted as much as possible.

The fall prevention temporary member 133 is connected to the lower end of the base frame 131 installed in the slab 118 located at the uppermost end of the lower wall structure 110, and the upper end is connected to the support 135 and the support ( 135) to prevent overturning.

Here, the fall prevention temporary member 133 is preferably manufactured so as to be able to expand and contract correspondingly as the height of the support 135 is adjusted by the hydraulic device 132 for lifting and lowering the support.

The cone top base 134 may be mounted on the temporary structure 130 for installing the cone, that is, the support 135 .

A plurality of the inner cone precast blocks 141 are arranged and connected in a cone shape so that the upper and lower portions are supported by the upper portions of the cone top base 134 and the lower wall structure 110, and thus, as shown in FIG. The inner cone 140 may be formed.

For example, the inner cone precast block 141 may include a block body portion B, a connecting reinforcing bar 143 and a concrete casting depression 142 as shown in FIG. 2 .

The block body portion (B) may be formed in a trapezoidal shape of the upper and lower light.

The connecting reinforcing bars 143 may be reinforced in the block body part B so as to protrude to both sides of the block body part B.

The concrete pouring recessed portion 142 may be formed on one side and the upper end of the outer surface of the block body portion (B).

The inner cone precast block 141 as shown in FIG. 2 is the upper surface of the cone top base 134 and the lower wall structure 110 through a plurality of connecting means at the upper and lower ends of the block main body (B). After connecting the connecting reinforcing bars 143 protruding from both sides of the adjacent block body, pour concrete into the concrete pouring depression 142 to connect the neighboring block body B make it possible

For another example, the inner cone precast block 141 may include a block body portion B and a connection member fastening groove portion 144 as shown in FIG. 4 .

The block body portion (B) may be formed in a trapezoidal shape of the upper and lower light.

A plurality of the connecting member fastening groove portions 144 may be formed at predetermined intervals on both sides of the outer surface of the block body portion (B).

The inner cone precast block 141 as shown in FIG. 4 is on the upper part of the cone top base 134 and the lower wall structure 110 through a plurality of connecting means at the upper and lower ends of the block main body (B). After connecting and fixing the connecting member 145 to the connecting member fastening groove portion 144 formed in the adjacent block body portion B, the connecting member 145 is connected to the adjacent block body through the fixing member. By fixing it to the part (B), it is possible to connect the neighboring block body parts (B) to each other.

The cone top 148 may be constructed on the inner cone precast block 141 and the cone top base 134 .

On the other hand, as shown in FIG. 5 on the upper surface of the lower wall structure 110, the inner cone precast block 141 is formed on the lower wall structure 110 by supporting the lower end of the inner cone precast block 141. When disposing, a plurality of stoppers 127 may be installed to align the positions of the inner cone precast block 141 .

Next, a method for constructing a silo using the precast construction method of the cone inside the silo according to an embodiment of the present invention will be described.

6 is a flowchart illustrating a process of constructing a silo using a precast construction method of a cone inside a silo according to an embodiment of the present invention.

6, the silo construction method using precast and slip foam according to an embodiment of the present invention includes a lower wall structure construction step (S110), an inner cone precast construction step (S120), an upper wall structure construction step ( S130) and a roof slab installation step (S140).

In the lower wall structure construction step (S110), the lower wall structure 110 having a cylindrical shape may be constructed to form one or more layers on the floor slab 111.

The lower wall structure construction step (S110) will be described in detail with reference to FIG. 7 .

7 is a view for explaining the construction step of the lower wall structure.

Referring to FIG. 7 , in order to construct the lower wall structure 110 through the lower wall structure construction step S110, first, as shown in FIGS. A plurality of unit wall structures 114 in which the wall reinforcing bars 114b are assembled inside the round wall precast formwork 114a so that they can be connected and fixed to the circular wall connecting reinforcing bars 112 protruding with a cylindrical shape up to a predetermined height Simultaneously with the installation, the precast column 115 is installed on the column connecting reinforcing bar 113 protruding above the floor slab 111 .

Thereafter, as shown in (c) of FIG. 7, after concrete is poured into the unit wall structure 114 to construct the circular wall 116, the upper surface of the circular wall 116 and the precast column ( After installing the slab beam 117 to be supported on 115), the first floor of the lower wall structure 110 is constructed by installing the precast slab 118 on the slab beam 117, and the above-described By repeating the same process as shown in Fig. 7 (d) and (e), the lower wall structure 110 is constructed to form a desired layer.

Here, the lower wall structure 110 was constructed by assembling and installing the unit wall structure 114, precast column 115, slab beam 117, and precast slab 118, etc. pre-produced in the factory at the site. However, depending on the construction site situation, it may be constructed by pouring concrete after directly performing reinforcement work and formwork installation work at the site.

On the other hand, on the upper portion of the lower wall structure 110, as shown in (e) of FIG. 7, a cone lower round inclined beam 120 supporting the lower end of the inner cone precast block 141 (refer to FIG. 8) is further added. can be constructed.

Referring to FIG. 8 , a process of constructing the cone lower round inclined beam 120 will be described.

8 is a view for explaining a process of constructing a lower cone lower round inclined beam, and FIG. 9 is a plan view illustrating a state in which the cone lower round inclined beam precast formwork is installed.

8 and 9, in order to construct the cone lower round inclined beam 120, first, concrete is poured inside the circular wall precast formwork 114a to construct the circular wall 116 located on the uppermost floor. In the case, the fixing hardware 121 is embedded in the lower wall structure 110 so that a part of the fixing hardware 121 protrudes to the outside of the upper surface of the lower wall structure 110 as shown in (a) of FIG. 8 . will do

In addition, as shown in (b) of FIG. 8, the fixed hardware 121 protruding outside the upper surface of the lower wall structure 110 has a cone lower round inclined beam precast formwork 123 using a fixing member 122. ) to be fixed and installed.

At this time, on the outside of the upper end of the lower wall structure 110 , a circular wall precast formwork 114a is in a state in which it protrudes to a height corresponding to the cone lower round inclined beam precast formwork 123 .

On the other hand, between the cone lower round inclined beam precast formwork 123 and the circular wall precast formwork 114a protruding outside the upper end of the lower wall structure 110, as shown in FIG. ) may be arranged, and a fixed hardware 125 may be installed in the cone lower round inclined beam precast formwork 123 .

Here, the fixing hardware 125 may be installed in the cone lower round inclined beam precast formwork 123 so that the upper end protrudes outward from the upper part of the cone lower round inclined beam precast formwork 123 .

In addition, the cone lower round inclined beam precast formwork 123 may be supported by a support 126 connected to the precast slab 118 located at the uppermost end of the lower wall structure 110 .

Thereafter, concrete is poured between the cone lower round inclined beam precast formwork 123 and the circular wall precast formwork 114a protruding outside the upper end of the lower wall structure 110 as shown in FIG. 8(d). Thus, the cone lower round inclined beam 120 is formed.

Here, the upper end of the fixed hardware 125 may protrude outside the upper surface of the cone lower round inclined beam 120, and the support 126 for supporting the cone lower round inclined beam precast formwork 123 is It can be removed after the concrete has cured.

On the other hand, the inner cone precast block on the upper surface of the cone lower round inclined beam 120 and the upper surface of the cone lower round inclined beam precast formwork 123 as shown in FIGS. 8 (e) and (f). A plurality of stoppers 127 for fixing the position of 141 may be installed.

In the inner cone precast construction step (S120), the inner cone 140 is precasted on the upper part of the lower wall structure 110 using the temporary structure 130 for installing the cone and the plurality of inner cone precast blocks 141. It is a process of construction through

10 is a flowchart for explaining the internal cone precast construction step.

Referring to FIG. 10 , the internal cone precast construction step (S120) may include a cone installation temporary structure installation step (S121) and an internal cone construction step (S122).

The temporary structure installation step (S121) for installing the cone is a process of installing the temporary structure 130 for installing the cone on the slab 118 located at the uppermost end of the lower wall structure 110 .

The installation step (S121) of the temporary structure for installing the cone will be described with reference to FIGS. 11 and 12 .

11 is a view for explaining the installation step of the temporary structure for installing the cone, Figure 12 is a flowchart for explaining the installation step of the temporary structure for installing the cone.

11 and 12, the installation step of the temporary structure for installing the cone (S121) includes a hydraulic device installation step (S1211), a support mounting step (S1212), a fall prevention temporary member installation step (S1213) and a support height adjustment step ( S1214) may be included.

First, in the temporary structure installation step (S121) for installing the cone, before the hydraulic device installation step (S1211), the base plate 131 is installed in the central portion of the slab 118 located at the uppermost end of the lower wall structure 110 .

In the hydraulic device installation step (S1211), a plurality of support lifting hydraulic devices 132 are installed on the base plate 131 installed on the slab 118 located at the uppermost end of the lower wall structure 110 .

In the support mounting step (S1212), a truss-shaped support is mounted on the hydraulic device 132 for lifting and lowering the support.

In the fall prevention temporary member installation step (S1213), a plurality of fall prevention temporary members 133 are installed on the base plate 131 and the support 135 installed on the slab 118 located at the uppermost end of the lower wall structure 110. By connecting it, the support 135 is supported by the fall prevention temporary member 133 to maintain a safe state without being overturned.

In the support height adjustment step (S1214), the height of the support support 135 is adjusted to correspond to the height of the inner cone 140 to be constructed by operating the hydraulic device 132 for lifting and lowering the support.

The inner cone construction step (S122) is performed by a truncated cone-shaped cone top base 134 mounted on the upper part of the temporary structure 130 for installing the cone and the upper part of the lower wall structure, that is, the cone lower round inclined beam 120. After arranging and connecting the plurality of inner cone precast blocks 141 so that the upper and lower portions of the inner cone precast block 141 are supported, the arranged inner cone precast block 141 and the cone top base 134 ) is a process of forming the inner cone 140 by pouring concrete on the upper part and constructing the cone top 148 .

13 is a view for explaining the inner cone construction step, Figure 14 is a flowchart for explaining the inner cone construction step.

13 and 14, the inner cone construction step (S122) includes the cone top base mounting step (S1221), the inner cone precast block arrangement step (S1222), the inner cone precast block connection step (S1223), and the cone top It may include an installation step (S1224).

In the cone top base mounting step (S1221), the cone top base 134 having a truncated cone shape is mounted on the temporary structure 130 for installing the cone.

In the inner cone precast block arrangement step (S1222), the inner cone precast block 141 is lifted so that the lower end is supported by the cone lower round inclined beam 120, and the upper end is mounted on the upper part of the temporary structure 130 for installing the cone. The inner cone precast block 141 is disposed on the lower wall structure 110 to be supported by the cone top base 134 .

At this time, both sides of the lower end of the inner cone precast block 141 are the upper surface of the cone lower round inclined beam 120 and the cone lower round inclined beam precast formwork 123 as shown in FIG. 8(f). At the same time supported by the stopper 127 installed on the upper surface, the connection slot S formed to a predetermined depth on the lower surface of the inner cone precast block 141 has the upper surface of the cone lower round inclined beam 120 outward. By inserting the upper end of the protruding fixing hardware 125, the inner cone precast block 141 can be firmly maintained in a fixed state.

On the other hand, the non-shrinkage high strength mortar may be filled in the connection slot S formed to a predetermined depth on the lower surface of the inner cone precast block 141 into which the fixing hardware 125 is inserted.

In addition, the upper end of the inner cone precast block 141 may be connected to and fixed to the cone top base 134 mounted on the temporary structure 130 for installing the cone using a plurality of fixing members.

By repeating the above process and disposing the plurality of inner cone precast blocks 141 in a cone shape, the inner cone 140 is formed.

In the step of connecting the inner cone precast blocks ( S1223 ), the adjacent inner cone precast blocks 141 arranged in the cone shape are connected to each other.

The internal cone precast block connection step ( S1223 ) will be described in detail with reference to FIGS. 15 and 16 .

FIG. 15 is a flowchart for explaining a connection step of an inner cone precast block as shown in FIG. 2 .

As shown in Fig. 15, the inner cone precast block 141 is formed in a trapezoidal shape in the form of an upper and lower beam, and a concrete pouring depression 142 is provided at the upper end and one side of the outer surface, and a plurality of connecting reinforcing bars are provided on both sides. When 143 is manufactured to protrude, the inner cone precast block connecting step (S1223) may include a reinforcing bar connecting step (S1223-1a) and a concrete pouring step (S1223-1b).

In the reinforcing bar connection step (S1223-1a), the connecting reinforcing bars 143 facing each other of the inner cone precast blocks 141 adjacent to each other are connected.

In the concrete pouring step (S1223-1b), adjacent inner cone precast blocks ( 141) can be connected.

Here, the connecting reinforcing bars 143 protruding from both sides of the inner cone precast block 141 are connected to each other in an overlapping state with the connecting reinforcing bars 143 of the neighboring inner cone precast block 141, or adjacent inner cones It may be arranged in a zigzag in a state located between the connecting reinforcing bars 143 of the precast block 141 and connected to each other.

FIG. 16 is a flowchart for explaining a connection step of an inner cone precast block as shown in FIG. 3 .

As shown in FIG. 3 , when the inner cone precast block 141 is formed in a trapezoidal shape of an upper and lower beam, and a plurality of connecting member fastening grooves 144 are provided at predetermined intervals on both sides of the outer surface, the The inner cone precast block connection step (S1223) may include a connecting member seating step (S1223-2a) and a connecting member fixing step (S1223-2b).

In the connecting member seating step (S1223-2a), the connecting member 145 is seated in the connecting member fastening groove 144 provided on the outer peripheral surface of the inner cone precast block 141 adjacent to each other.

In the connecting member fixing step (S1223-2b), by fixing the connecting member 145 seated in the connecting member fastening groove portion 144 to the inner cone precast block 141 adjacent to each other using a fixing member, the neighboring inner It allows the cone precast block 141 to be connected.

Here, on the outer surface of the plurality of inner cone precast blocks 141, the worker performs rebar connection work and concrete pouring work in order to connect the inner cone precast blocks 141 adjacent to each other, or the connection member 145 is fastened. As shown in FIG. 1 , a plurality of temporary design stages 146 and a temporary work table 147 may be installed so that the work can be safely and easily performed, and the temporary design end 146 and the temporary work table 147 are mutually After the connection operation of the neighboring inner cone precast block 141 is completed, it may be removed from the inner cone precast block 141 .

Again, referring to FIG. 14 , in the cone top installation step (S1224), concrete is poured on the cone top base 134 and the inner cone precast block 141 to form the cone top 148 .

When the construction of the inner cone 140 is completed through the process as described above, the cone installation temporary structure 130 supporting the inner cone 140, the base plate 131, the hydraulic device for lifting and lowering the support 132 and The fall prevention temporary member 133 is removed.

After the inner cone 140 is constructed through the process as described above, the upper portion of the lower wall structure 110, that is, the upper portion of the cone lower round inclined beam 120 through the upper wall structure construction step (S130). The wall structure 150 is constructed.

17 is a view showing the process of constructing the upper wall structure by the slip foam. Referring to FIG. 17, in the upper wall structure construction step (S130), the upper part of the lower wall structure 110, that is, the lower cone lower round inclined beam. As shown in (a) of FIG. 17, the slip foam 151 is installed in 120, and concrete is poured while the formwork is continuously moved upward to construct the upper wall structure 150 of a cylindrical shape of a desired height. make it possible

At this time, as shown in (b) of FIG. 17, on the upper end of the inner circumferential surface of the upper wall structure 150 constructed while continuously moving the slip foam 151 upward, a truss engaging jaw 152 may be formed. The upper wall structure 150 can be constructed, and after the construction of the upper wall structure 150 is completed to a desired height, the slip foam 151 is lifted from the upper wall structure 150 and dismantled.

18 is a view showing a state in which the roof slab is installed on the upper wall structure, and FIG. 19 is a view showing a silo constructed by the silo construction method using precast and slip foam according to the present invention.

In the roof slab installation step (S150), as shown in FIG. 18, the roof slab reinforcement truss 161 is attached to the truss engaging jaw 152 formed at the upper end of the inner circumferential surface of the upper wall structure 110 from which the slip foam 151 is dismantled. After installation, the roof slab 162 is seated on the roof slab reinforcement truss 161 and installed, thereby completing the silo construction as shown in FIG. 19 .

Again, the effect of the structure for precast construction of the cone inside the silo according to the present invention and the method for precast construction of the cone inside the silo using the same will be described with reference to FIGS. 1 to 19 .

1 to 13 , the structure for precast construction of silo internal cones according to the present invention and the precast construction method of silo internal cones using the same are the most difficult internal cones to construct structurally among silo structures on site. Thus, the inner cone 140 can be constructed through a precast method in which a plurality of pre-fabricated internal cone precast blocks 141 are arranged in a cone shape and assembled at the site without construction.

At this time, as shown in FIG. 4, the inner cone using the inner cone precast block 141 formed in a trapezoidal shape of the upper and lower beams and provided with a plurality of connecting member fastening grooves 144 at predetermined intervals on both sides of the outer surface. When constructing 140), a plurality of inner cone precast blocks 141 are connected to each other only by a simple operation of connecting adjacent inner cone precast blocks 141 using the connecting member 145 to form the inner cone 140 ) can be formed, so it is possible to minimize the on-site concrete pouring work during the construction of the inner cone 140 .

On the other hand, as shown in FIG. 2, it is formed in a trapezoidal shape in the form of a downward beam, and a concrete pouring depression 142 is provided on one side and an upper end of the outer surface, and a plurality of connecting reinforcing bars 143 are protruded from both sides of the inner cone. When the inner cone is constructed using the precast block 141, after connecting the connecting reinforcing bars 143 facing each other, the concrete pouring depression 142 provided at the upper end and one side of the outer peripheral surface of the inner cone precast block 141 ) can be poured only to form an inner cone 140 by connecting a plurality of inner cone precast blocks 141 arranged in an inverted cone shape to each other, so that the on-site concrete pouring work can be minimized when constructing the inner cone. .

As described above, the structure for precast construction inside silo according to the present invention and the method for precast construction of cone inside silo using the same is a method of assembling a plurality of internal cone precast blocks 141 pre-fabricated at the factory on site. By enabling the construction of the cone 140, there is no need for on-site concrete pouring at all or the concrete pouring operation can be minimized, which greatly shortens the construction period of the internal cone, and minimizes field workers, thereby ultimately constructing a silo. It can reduce cost and construction time.

That is, the structure for precast construction of the silo inner cone according to the present invention and the precast construction method of the silo inner cone using the same are the most difficult to construct in the silo structure, and also have the most copper bars and formwork, various temporary workbenches and stairs, safety facilities, etc. In order to install and dismantle the inner cone, the largest number of workers is input and the construction time is very long. This is a free method by assembling and constructing a plurality of internal cone precast blocks 141 prefabricated at the factory on site. By replacing it with the cast method, it is possible to shorten the construction period and construct a high-quality silo, as well as improve the workability and safety of the silo construction.

As described above, the structure for precast construction of the silo inner cone and the precast construction method of the silo inner cone using the same according to the present invention are pre-fabricated in the factory for the structures necessary for the construction of the inner cone 140, and only simple assembly in the field Since it can be constructed quickly, it is possible to secure the uniformity of the construction quality, and the silo construction period is shortened, and there is an advantage in that the safety of the workers can be secured as the field work is reduced.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those of ordinary skill in the art or those having ordinary knowledge in the art will have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

(110): lower wall structure (111): floor slab
(112): Circular wall connecting reinforcing bar (113): Column connecting reinforcing bar
(114): unit wall structure (120): cone lower round slope beam
(130): Temporary structure for installing a cone (131): Base plate
(132): Hydraulic device for lifting and lowering the bearing (133): Electricity prevention temporary member
(134) : Cone Top Base (140) : Inner Cone
(141): inner cone precast block (142): concrete pouring depression
(143): connecting reinforcing bar (144): fastening groove
(145): connecting member (146): temporary design end
(147) : Temporary Workbench (148) : Cone Top
(150): upper wall structure (151): slip foam
(161) : Roof Slab Reinforcement Truss (162) : Roof Slab

Claims (13)

a temporary structure for installing a cone installed in the center of the slab located at the top of the lower wall structure;
a cone top base mounted on an upper portion of the temporary structure for installing the cone;
a plurality of inner cone precast blocks for forming an inner cone by being connected and arranged in a cone shape so that the upper and lower portions are supported by the upper portions of the cone top base and the lower wall structure; and
A structure for precast construction inside a silo comprising a cone top constructed on the inner cone precast block and the cone top base. The method of claim 1,
A plurality of stoppers installed on the upper surface of the lower wall structure to support the lower end of the inner cone precast block to align the position of the inner cone precast block when the inner cone precast block is disposed on the lower wall structure Structure for precast construction inside the silo further comprising a cone. The method of claim 1,
The temporary structure for installing the cone,
a truss-shaped support installed at the center of the slab located at the top of the lower wall structure;
a plurality of support lifting hydraulic devices installed between the support and the slab to adjust the height of the support to correspond to the height of the inner cone to be constructed; and
A structure for precast construction inside a silo comprising a plurality of fall-prevention temporary members connected to a slab located at the top of the lower wall structure and having an upper end connected to the support to prevent the support from being overturned. The method of claim 1,
The inner cone precast block,
Block body portion formed in a trapezoidal shape of the upper and lower light;
a plurality of connecting reinforcing bars reinforced in the block body so as to protrude to both sides of the block body; and
A structure for precast construction inside a silo including a concrete pouring depression formed at the upper end and one side of the outer surface of the block body. 5. The method of claim 4,
The inner cone precast block,
The upper and lower portions of the block body are connected to and fixed to the upper portions of the cone top base and the lower wall structure through a plurality of connecting means,
After connecting the connecting reinforcing bars protruding from both sides of the adjacent block body, concrete is poured into the concrete pouring depression to connect the adjacent block body parts. The method of claim 1,
The inner cone precast block,
Block body portion formed in a trapezoidal shape of the upper and lower light; and
A structure for precast construction inside a silo including a connection member fastening groove formed at predetermined intervals on both sides of the outer surface of the block body. 7. The method of claim 6,
The inner cone precast block,
The upper and lower portions of the block body are connected to and fixed to the upper portions of the cone top base and the lower wall structure through a plurality of connecting means,
After the connecting members are seated in the connecting member fastening grooves formed in the adjacent block body parts, the adjacent block body parts can be connected by fixing the connecting members to the adjacent block body parts through a fixing member. Structure for precast construction of cone inside silo. A temporary structure installation step for installing a cone for installing a temporary structure for installing a cone on a slab located at the top of the lower wall structure; and
A plurality of internal cone precast blocks are arranged and connected in a cone shape so that the top and bottom are supported by the top surface of the cone top base and the bottom wall structure mounted on the top of the temporary structure for installing the cone, and then the cone top base and the internal cone A precast construction method of a cone inside a silo, comprising an internal cone construction step of forming an internal cone by installing a cone top on the precast block. 9. The method of claim 8,
The installation step of the temporary structure for installing the cone,
A hydraulic device installation step of installing a plurality of support lifting hydraulic devices on a slab located at the top of the lower wall structure;
a support mounting step of mounting a truss-shaped support on the hydraulic device for lifting and lowering the support;
A fall prevention temporary member installation step of connecting a plurality of fall prevention temporary members to the slab and the support located at the top of the lower wall structure; and
Precast construction method of a silo inner cone comprising the step of adjusting the height of the support to correspond to the height of the inner cone to be constructed by operating the hydraulic device for lifting and lowering the support. 9. The method of claim 8,
The inner cone construction step is,
Cone top base mounting step of mounting the cone top base on the top of the temporary structure for installing the cone;
By lifting the inner cone precast block, the inner cone precast block is placed on top of the lower wall structure in a cone shape so that the lower end is supported by the cone lower round sloping beam and the upper end is supported by the cone top base mounted on the upper part of the temporary structure for installing the cone. arranging the inner cone precast block arrangement step;
an inner cone precast block connecting step of connecting adjacent inner cone precast blocks arranged in the cone shape to each other; and
Precast construction method of a cone inside a silo comprising a cone top installation step of forming a cone top by pouring concrete on the cone top base and the inner cone precast block. 11. The method of claim 10,
In the step of arranging the inner cone precast block,
The inner cone precast block,
The lower end is supported by the stopper installed in the cone lower round inclined beam and the cone lower round inclined beam precast form, and at the same time, a fixed hardware projecting out of the upper surface of the cone lower round inclined beam in a connection slot formed to a predetermined depth in the lower surface Precast construction method of a cone inside a silo, characterized in that it is arranged in a cone shape on the upper part of the lower wall structure so that the upper end of the is inserted. 11. The method of claim 10,
The step of connecting the internal cone precast block is,
Rebar connecting step of connecting the connecting reinforcing bars facing each other of the inner cone precast block adjacent to each other; and
Precast construction method of a silo inner cone comprising a concrete pouring step of curing by pouring concrete into the concrete pouring depression provided on the upper end and one side of the outer surface of the inner cone precast block. 11. The method of claim 10,
The step of connecting the internal cone precast block is,
A connecting member seating step of seating the connecting member in the connecting member fastening groove provided on the outer circumferential surface of the inner cone precast block adjacent to each other; and
and a connecting member fixing step of fixing the connecting member seated in the connecting member fastening groove portion to the inner cone precast block adjacent to each other using a fixing member.

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