KR101195236B1 - Structure lifting method by t-support member - Google Patents

Abstract

PURPOSE: A structure lifting method using a T-shaped steel support is provided to improve stability and cost-efficiency by enabling the rapid installation of a lower reaction member. CONSTITUTION: A structure lifting method using a T-shaped steel support is as follows. T-shaped steel supports(200) are fixed to the side surfaces of a structure with an expanded foundation(100) using anchors(110). The T-shaped steel support comprise multiple side support plates(210) and connecting support plates(220). A hollow pipe(120) is fixed between the T-shaped steel supports. Lower reaction members(410) are installed in the T-shaped steel supports around the hollow pipe. Spread concrete(C) is placed to bury the T-shaped steel supports, the hollow pipe, and the lower reaction members therein, and the open top surface of the hollow pipe, and the tops of the lower reaction members are exposed to the outside. Reaction support bodies are installed in the exposed lower reaction members using connectors(430). Insertion bodies(300) are inserted into the hollow pipe. An insertion unit(460) is installed between the top ends of the insertion bodies and the top support body(440) of the reaction support bodies. The insertion bodies are inserted into the ground through the hollow pipe.

Description

Structural LIFTING METHOD BY T-SUPPORT MEMBER

The present invention relates to a structure lifting method using a T-shaped support steel. More specifically, the present invention relates to a structure raising method which can raise the reaction structure to be supported on the enlarged foundation by using a press-fitted body, and more quickly and stably install the reaction force support while constructing the expanded concrete in the structure (expanded foundation).

In case of reinforcement of the foundation due to settlement of the constructed structure, the method of injecting cement liquid or mortar into the ground has been mainly used.However, this method is difficult to secure construction quality and suppresses further settlement. There was a problem that it is not effective because it is only effective.

The impression method has been introduced to enable the impression of the sinking structure and to obtain the effect of installing a permanent foundation pile.

1A illustrates a structure impression method using Korean indenter (Korean Patent No. 621,669).

The following is a brief look.

First, in order to install the reaction support body 20, the reaction plate 12 is drilled in the bottom plate 2, which is the foundation of the structure, and then the lower end of the reaction hole 21, such as reinforcing bars or steel bars, is inserted into the reaction hole 12. The bottom support plate is fixed to the bottom of the bottom plate, the upper end of the reaction force 21 is provided with a top support 22 in the form of a circular plate, artificially install the reaction support (20; 21, 22) to the structure,

In the lower part of the upper support 22, a press-fit body 30, such as a steel pipe, is set in the press-in hole 13 drilled to a predetermined depth, such as the reaction force hole 12, and the press-fit member 30 and the upper support body ( 22, the press-fit means 40 including the hydraulic cylinder is operated to press-fit the press-fit body 30 to the bottom of the bottom plate 2, and then the lifting means including the hydraulic cylinder on the press-fit press-fit body 30 ( 50, additional use of a filler steel pipe, etc.), and eventually, the bottom plate 2 settled by the pulling means 50 can be pulled out.

In addition, the press-fit body 30 pressed into the bottom of the raised bottom plate 2 is integrated with the structure and the finished reaction force 21 to act as a foundation pile for supporting the structure.

A method of raising a structure using such a conventional reaction force support is shown in FIG. 1B.

That is, Figure 1b is installed on the inner bottom plate (2) of the structure (1) by installing the structure lifting system 10 in the conventional impression construction method including a reaction force support, a press body, the pulling means and the pressing means, It is shown that it can be pulled, and the structure lifting system in the conventional lifting method comprising a reaction force support, a press-fit body, a pulling means and a press-in means in the enlarged base plate 4 of the structure (1) on which the enlarged base is formed ( It is shown that the structure can be raised by installing 10).

However, the conventional impression method is applicable to the foundation having sufficient strength, but the internal work of the structure 1 is impossible, and even if the enlarged foundation is not formed or the expanded foundation is formed in the ground, If it is impossible to break enough, the conventional pulling technique cannot be applied.

An impression method for solving this problem will be described with reference to FIGS. 1C to 1F.

First, in the method of raising the structure using the indenter,

1C excavates around the structure foundation, horizontally installs the anchor bar 61 which is reinforced on the side of the structure foundation 64a, and installs the hollow pipe 62 in the vertical direction on the structure foundation side. Assemble the basic reinforcing bar (not shown) to be assembled with the anchor bar 61, assembling the lower reaction sphere (63) is a vertical reinforcement around the hollow pipe 62, and poured concrete to expose the upper end of the lower reaction sphere An enlarged reinforcement base 64b is formed separately.

Next, as shown in FIG. 1D, the lower end of the upper reaction hole 65 is connected to the upper end portion of the upper reaction hole 65 by using a connector 67 such as a coupler, and the upper end portion of the upper reaction hole 65 is connected to the upper end of the upper reaction hole 65. The reaction force support 60 is installed by fixing the upper support 66.

Next, as shown in FIG. 1E, after the press fitting body 30 is set in the press fitting hole 71 by the hollow pipe, a press fitting means 72 is installed between the upper end of the press fitting body 30 and the upper support body 66. It operates to press the indenter 30 to the lower part of the structure, and to raise the structure (1) by re-installing the pulling means (73, the same as the indentation means) on the press-indented indentation 30 above.

When the final structure (1) pulling is completed as shown in FIG. 1f, the reaction force support 60 is dismantled and the top of the press-fit body 30 is finished with the closing plate 74 to complete the final construction.

However, such a conventional method is to install the anchor bar on the side of the structure foundation, install the hollow pipe on the side of the structure in the vertical direction, and then assembling too much reinforcement in the installation of the lower reaction sphere by assembling the base reinforcement to be assembled with the anchor bar Construction must be required, and when laying concrete, construction performance was inevitably deteriorated due to the positional change of the hollow pipe.

The present invention is to solve the above problems, by raising the lower reaction mechanism for the pile indentation in the impression of the structure formed by the expansion base to raise the structure using a more stable and economical T-shaped support steel The technical problem to solve the provision of the method.

According to an aspect of the present invention,

First, it is easy to install in the installation of the hollow pipe is set in the expansion concrete to be installed in the conventional lower reaction sphere and the lower reaction sphere is set in the vertical direction, so that for example to more stably integrated in the expansion foundation (structure) do.

That is, the present invention is fixed to the T-shaped support steel using an anchor on the side of the expanded foundation (structure) to set the hollow pipe between the two T-shaped support steel.

Accordingly, the hollow pipe can be installed between the side support plates of the T-shaped support steel, so that the vertical setting of the hollow pipe becomes very easy.

In addition, the lower reaction sphere, which is a vertical rebar, is also welded up and down to the T-shaped support steel to install the lower reaction sphere more easily.The T-shaped support steel is fixed to the side of the enlarged base by an anchor to support the reaction force of the lower reaction hole. To ensure more secure.

Second, the lower reaction sphere is welded to the T-shaped support steel has a very large pull force in the lifting work structure. Thus, the T-shaped supporting steel having the lower reaction mechanism of the present invention is fixed by an anchor on the enlarged base, but is further supported on the upper or lower surface of the enlarged base (structure) by further installing horizontal support members on the lower and upper portions thereof to sufficiently resist drawing. To make it possible.

Third, the T-type support steels are installed along the side of the enlarged base, which is to install a crimping elongation can be wrapped around each T-shaped support steel to enable a more stable installation of the lower reaction sphere.

The present invention can shorten the complicated and time-consuming work for setting the hollow pipe that serves as a guide tube in the indentation of the structure having an enlarged foundation can be raised more stably and quickly have.

In addition, by using the T-shaped support steel that can easily resist the setting and drawing force of the lower reaction sphere is installed around the hollow pipe it is possible to structurally more reliable structure impression.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1a and 1b is a construction of the structure lifting method using a conventional reaction force support.
1C, 1D, 1E, and 1F are structural construction flowcharts using a conventional expansion base and reaction force support.
2 and 3 is a construction configuration of the structure lifting method using the T-shaped support steel of the present invention,
Figures 4a, 4b, 4c and 4d is a construction sequence diagram of the structure lifting method using the T-shaped support steel of the present invention.

BRIEF DESCRIPTION OF DRAWINGS To describe the present invention more clearly and easily, the following describes the best embodiments of the present invention in detail with reference to the accompanying drawings, and embodiments according to the present invention may be modified in various other forms, and thus the scope of the present invention. Is not limited to the embodiments described below.

[Configuration of T-shaped Support Steel and Expanded Foundation of the Present Invention]

2 and 3 is a construction diagram of the T-shaped support steel 200, the compressed steel 300, the press-fit body 500, the lower reaction mechanism 410 is installed on the enlarged base (100, an example of the structure) of the present invention It is shown.

First, as shown in FIG. 2, the enlarged foundation 100 is an enlarged foundation of an existing structure, which is an enlarged reinforced concrete structure that is constructed to have a width larger than the width of the structure that is buried in the ground and constructed with a predetermined thickness to be constructed on top. Can be.

The expansion base 100 has the effect of transmitting the load of the structure to the ground by distributing the load of the structure in a wide ground by the enlarged area.

However, as time goes by, the stability of the structure is also threatened if there are problems such as uneven settlement of the expansion base for various reasons.

In this case, it is necessary to raise the reinforcement base and the structure soaked reinforcement at once.

To this end, the present invention is to press the indenter downward around the enlarged base using a reaction force support and a hollow pipe, such as the lower reaction sphere, the upper reaction sphere, as shown in Figure 1a and 1b to the front end of the indentation rock layer of the lower base After being stably supported on the back, the newly constructed expansion base integrated with the indenter and the structure are pulled upward by using the reaction force of the indenter by using the pulling means installed on the reaction force support.

Accordingly, the reaction force support and the hollow pipe are integrated into the expansion base, and the reaction force support and the hollow pipe have a great influence on the workability and safety of the structure impression depending on how the reaction force support and the hollow pipe are constructed.

According to the present invention, the reaction force support member 400 and the hollow pipe 120 are constructed by using the T-shaped support steel 200 and the compressed steel 300.

First, the T-shaped support steel 200 is fixed by the anchor 110 so that a plurality of the base A side (A) is spaced apart from each other.

At this time, the T-shaped support steel 200 includes a side support plate 210 fixed to the side (A) by the anchor 110 and the connection support plate 220 protruding in the front center of the side support plate 210 of the expanded foundation It can be referred to as a T-shaped steel having an extended length (L) corresponding to the thickness (T).

In this case, a plurality of anchor holes are formed in the side support plate 210 to allow the anchor 110 to penetrate therebetween, and the hollow pipe 120 is inserted between the connection support plates 220. It can be seen that to enable a more stable vertical or vertical setting of the hollow pipe 120 by.

In this case, the connection support plate 220 and the hollow pipe 120 are completely integrated with each other by welding.

Furthermore, a plurality of lower reaction spheres 410 that are vertical rebars are installed in the T-shaped support steel 200.

The lower reaction sphere 410 is connected to the upper reaction sphere 420 which will be described later as a reinforcing bar embedded in the expansion concrete so as to protrude upward expansion concrete may have a problem that is pulled out by the pull-out force simply buried in the expansion concrete.

Accordingly, the present invention is fixed in such a manner that the lower reaction sphere 410 is welded to the T-shaped support steel 200 to enable a more stable pull resistance.

At this time, the lower reaction hole 410 is to be arranged around the hollow pipe 120 is installed between the T-shaped support steel 200, in the case of Figure 2 T-shaped support steel 200 based on the hollow pipe 120 It can be seen that the four on the inner side of the side support plate 210 and the connection support plate 220 is spaced from each other to be installed around the hollow pipe 120.

This is because the reaction force support member 400 including the lower reaction force tool 410 sets the indenter 500 to be press-fit into the hollow pipe 120.

Next, in order to squeeze the T-shaped support steel 200 to each other on the enlarged foundation side, the through-holes formed in the connecting support plate 220 are allowed to pass through the compressed steel 300 which is reinforced.

Accordingly, the compressed steel 300 penetrates the through hole and is disposed at a position spaced apart from the side of the enlarged foundation to be tightened by a fastening plate (not shown) at the corner of the enlarged foundation to enlarge the T-shaped supporting steel 200. It will serve to compress the foundation.

In other words, the pressing plate and the fastening nut which serves as a fixing plate to cross the compressed steel at the corner of the base of the expansion and the cross-compressed steel can be tightened in the longitudinal direction. Of course, it does not matter if you use PS strands, fixing devices and fixing plates.

Therefore, it can be seen that the T-shaped support steel 200 is more stably integrated with the expansion base 100.

The compressed steel 300 is also in contact with the hollow pipe 120, and also has the advantage that it is possible to integrate the lower reaction sphere 410 by welding more stable hollow pipe 120 setting.

When the lower reaction sphere 410 setting is completed in the expansion base supporting the structure, the expansion concrete (C) is poured into the T-shaped support steel 200, the lower reaction sphere 410, the crimped steel 300, and the hollow pipe. 120 is to be embedded, it can be seen that the upper surface of the lower reaction hole 410 is projected and exposed, the upper surface of the hollow pipe 120 is exposed in the expanded concrete upper surface.

3 shows a slight difference in the installation form of the lower reaction mechanism 410 and the compressed steel 300 compared to FIG.

That is, the lower reaction sphere 410 is the same as that to be installed on the T-shaped support steel 200 by welding around the hollow pipe 120, two lower reaction sphere 410 of the T-shaped support steel 200 There is a difference in that it is installed by welding on the front side of the connection support plate 220, not the inner side, and the compressed steel 300 is reinforced by welding on the front surface of the lower reaction hole 410 installed in the front side there is a difference. It can be seen.

Compared to FIG. 2, the lower reaction tool 410 has an advantage in that the welding operation and the machining operation due to the formation of the through hole of the T-shaped support steel 200 may be excluded.

In addition, in the case of Figure 3, the upper and lower engaging plates 230 and 240 supported on the bottom and the upper surface of the existing expansion base 100 is formed on the upper and lower ends of the T-shaped support steel 200, and the upper and lower engaging plates 230 and 240) It is to be fixed to the top and bottom surfaces of the enlarged base by the angle anchor 110.

At this time, both the lower locking plate 240 and the upper locking plate 230 may be formed on the T-shaped support steel 200, but only one of them may be installed on the T-shaped support steel 200, and both of the T-shaped support steel ( 200) serves to prevent the drawing by the upper reaction sphere.

This is because a large number of hollow pipes 120 are used to raise the structure and the enlarged foundation with a huge self-weight upwards, and the integration of the hollow pipe 120 and the expanded base is very important by this impression. This is because it is necessary to set the excitation lower reaction sphere 410 to the expansion concrete more stably.

[Structure impression method using T-shaped support steel of the present invention]

4a to 4d sequentially show the structure pulling method of the present invention.

First, the construction method will be described with reference to FIG. 3, and the enlarged foundation 100 supports the structure (storage tank, etc.) at the top thereof, and an object of the present invention is to reinforce the enlarged foundation 100 by pulling. .

To this end, as shown in FIG. 3, a plurality of T-shaped support steels 200 are spaced apart from each other on an enlarged foundation side and fixed with anchors.

The number of installation of the T-shaped support steel 200 is determined in a range capable of securing a stable pulling force required for expanding the base.

In FIG. 4A, it can be seen that three are provided on each side.

When the T-shaped support steel 200 is installed, the hollow pipe 120 is fixedly installed by welding between the T-shaped support steels 200.

In addition, the lower reaction sphere 410, which is a vertical reinforcement around the hollow pipe 120, is also fixed to the T-shaped support steel 200 by welding. Four lower reaction spheres 410 are formed in one hollow pipe. You can see that it is installed.

At this time, the two vertical reinforcement lower reaction sphere 410 is installed on the front surface of the connecting support plate 220 of the T-shaped support steel 200 is compressed by the compressed steel 300, and eventually the T-shaped support steel 200 is expanded base It can be seen that to be pressed to the (100) side.

Next, the upper side of the lower reaction hole 410 is protruded to be exposed, and the hollow concrete pipe 120 is embedded to cure after pouring the expanded concrete (C) using a formwork (not shown) to expand the expansion base. This will be done.

Next, the upper reaction sphere 420 is connected to the upper portion of the lower reaction sphere 410 exposed as shown in Figure 4b, the connector 430 is installed at the upper end of the lower reaction sphere and the lower end of the upper reaction sphere 420.

The upper reaction sphere 420 is made of reinforcing bars or steel rods, like the lower reaction sphere 410, the connector 430 uses a coupler that is a reinforcing bar connection device.

A reaction force support member 400 serving as a reaction force for press-fitting the indenter 500 into the lower concrete ground by fastening and fixing the upper support member 440 made of a circular plate on the upper end of the upper reaction tool 420. Will install

At this time, the through hole 441 is formed in the upper support 440 corresponding to the number of installation of the upper reaction sphere 420, and the upper end of the upper reaction sphere 420 is fastened and fastened by a fastener 442 that is a fastening nut Be sure to

Next, as shown in FIG. 4C, the indenter 500, which is a steel pipe, is inserted into the hollow pipe 120 and press-fitted into the lower ground.

The length of the steel pipe which is the press-fit member 500 may be press-fitted while connecting a plurality of steel pipes in consideration of the depth to be press-fitted.

Accordingly, in the state where the indenter is set in the hollow pipe 120, the head reinforcing plate 450 is selectively installed on the head of the indenter upper end, and a predetermined capacity is provided between the upper supporter 440 and the head reinforcing plate 450. Install and operate the press-in means 460, which is a hydraulic cylinder having an excitation body 500 is pressed into the lower portion of the expanded concrete.

That is, the reaction force support 400 restrains the operation of the hydraulic cylinder so that the press-fit member 500, which is a steel pipe, is press-fitted into the ground in the form of the reaction force.

The number of hydraulic cylinders and filler steel pipes is adjusted according to the one-time indentation amount of the press-fit body 500 by one stroke of the hydraulic cylinder, and the steel pipes are press-fitted into the lower portion of the expanded concrete to a predetermined depth.

In this case, it is preferable to press the tip portion of the press-fitted body to be supported by hard ground (rock, etc.), and the press-fitted parts may be press-fitted to the same depth depending on the structure of the ground, but the press-fitted depths may be different from each other. .

After the indenter 500 is completely pressed in the expanded concrete lower ground by the indenter indentation, the enlarged foundation and the structure that are settled are raised by using the indenter indenter 500.

That is, the pulling means 600 is installed on the upper end of the press-fit body 500, the pulling means 600 may be configured separately, such as a hydraulic cylinder having a larger capacity, the press-in means 460 ) Can be used as it is.

By the pulling means 600, the structure can be raised in the state before settlement, the indenter 500 supports the operation of the lifting means 600, the reaction force is enlarged by the reaction force support 400 100), resulting in the impression of the structure.

After checking the impression of such a structure, the pulling means 600 and the reaction force support 400 are dismantled in order and the press-fitted indenter 500 is finished.

First, the head is cut in accordance with the degree of indentation of the indenter 500, and the height thereof is adjusted, and the inside of the steel tube that is the indenter 500 is filled with a filler (not shown) such as concrete or crushed stone to raise the filling steel pipe. In addition, it should be able to function as the foundation file for the restored structure.

Next, as shown in FIG. 4D, the indenter 500 is integrated with the lower reaction hole 410 fixed to the expansion concrete so as to function as a foundation pile of the structure.

For example, by installing the head finishing plate in the form of a circular plate on the upper part of the indenting body 500 and fastening the upper end of the lower reaction hole to the through hole formed in the head finishing plate, the lower reaction hole fixed to the expanded concrete is the indenting body 500. ) To be integrated.

In addition, it is preferable to pour the finishing concrete on the upper surface of the expanded concrete so that the upper end of the indenter 500 is integrated with the expanded concrete without being exposed so that the final indenter 500 and the structure are integrated with each other.

100: enlargement basis
110: Anca
120: hollow pipe
200: T-shaped support steel
210: side support plate
220: connecting support plate
230, 240: upper and lower locking plates
300: pressed steel
400: reaction support
410: lower reaction mechanism
420: upper reaction sphere
430 connector
440: upper support
450: tofu reinforcement plate
460: indentation means
500: indent
600: raising means

Claims (4)

Fixing the T-shaped support steel 200 including the plurality of side support plates 210 and the connection support plates 220 to the side of the structure including the enlarged foundation 100 using the anchors 110;
Fixing the hollow pipes 120 between the T-shaped support steels 120;
Installing a plurality of lower reaction spheres 410, which are vertical rebars, on the T-shaped support steel 200 around the hollow pipe 120;
The upper portion of the lower reaction sphere 410 protrudes from the upper surface of the expanded concrete by placing the expanded concrete C so that the T-shaped support steel 200, the hollow pipe 120, and the lower reaction sphere 410 are embedded. Allowing the top surface of the hollow pipe 120 to be exposed in an open state;
Connecting and installing a reaction force support member 400 including an upper reaction force tool 420 and an upper support body 440 to the exposed lower reaction force tool 410 by using a connector 430; And
Insert the indentation body 300 into the hollow pipe 120, and the indentation means 460 is installed between the upper end and the upper support of the indentation body, the indentation body is pressed into the lower part of the ground through the hollow pipe by the indentation means Structural support method using a T-shaped support steel, characterized in that it comprises a; supporting the front end on the hard ground. The method of claim 1,
Contacting the crimped steel 300 to the front portion of the connection support plate 220 of the T-shaped support steel 200, and tightening the crimped steel so that the T-shaped support steel 200 is compressed to the enlarged foundation side. It further comprises, the impression structure method using a T-shaped support steel, characterized in that the lower reaction sphere 410 and the hollow pipe 120 is in contact with the compressed steel (300). The method of claim 1,
The compressed steel 300 is to be installed through the through holes formed in the connecting support plate 220 of the T-shaped support steel 200, and tightening the compressed steel so that the T-shaped support steel is pressed on the side of the expansion base. Further comprising, the structure of the impression method using a T-shaped support steel, characterized in that the lower reaction sphere 410 and the hollow pipe 120 is in contact with the compressed steel 300 is in contact with. The method of claim 1,
The upper or lower portion of the T-shaped support steel 200 extends to contact the upper or lower surface of the structure is characterized in that the upper or lower locking plate 230, 240 which is fixed by the anchor is used to further use Structural impression method used.

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