KR101387954B1 - Mehod for constructing underground wall in extension of undergound parking lot - Google Patents

Abstract

The present invention relates to a method for constructing a wall (bearing wall) by extending a basement of a building and, more specifically, to an underground wall construction method for extending an underground parking lot. The present invention can obtain a partial work space for constructing a retaining wall and support and reinforce a structure by using a steel pipe, a pillar, and a buttress, so that the construction can be done conveniently while obtaining the stability of an existing building. The present invention also reduces construction periods and construction costs so that the investment costs can be reduced when a structure is remodeled. [Reference numerals] (S100) Step of excavating a work space; (S200) Step of installing a support; (S300) Steel pipe indenting step; (S400) Step of supporting a building; (S400a) Ground reinforcement work; (S500) Step of finishing walls

Description

[0001] The present invention relates to a method of constructing an underground parking lot,

The present invention relates to a method for constructing a wall (bearing wall) by extending the basement of the building, and more specifically, the basement wall is extended to extend the underground parking lot when the building is remodeled, but the existing building remains intact. The present invention relates to an underground wall construction method for extension of an underground parking lot for rapidly and elaborately extending a wall while securing stability by load received from a building.

In the case of high-rise buildings (apartments) that were built more than 20 years ago, the underground parking facilities were not fully equipped due to the necessity of parking at the time of construction and the conditions of building law.

On the other hand, in the case of the above-mentioned old buildings, the reconstruction is required in a state of considerable aging, but the reconstruction is delayed due to the inconvenience of the architectural difficulty and considerable cost. It is the situation that it is taking the risk of the backwardness and the risk of the living environment.

Accordingly, the remodeling work using the existing apartments for repair and reinforcement is being activated in the recent years, and as the living standard is improved during the remodeling work as described above, the number of vehicles is increased, In order to improve the living environment such as safety, an underground parking lot was desperately needed.

Therefore, various attempts have been made to increase the underground parking lots. As an example of such a method, a method using a concrete panel has been proposed as disclosed in Japanese Patent Application Laid-Open No. 10-2004-0092200.

However, the construction method using the concrete panel as described above had a problem in the hassle of construction due to irregular excavation, construction and later safety problems and rise in construction cost.

Korean Patent Publication No. 10-2004-0092200.

The present invention was devised to solve the above problems, by ensuring the partial space according to the earth wall construction and by supporting the reinforcement construction of existing buildings using steel pipes and struts, support, convenience of construction and existing buildings It is an object of the present invention to provide a construction method for the underground wall for the expansion of the underground parking lot to enable the construction in a state where the stability is secured, and in particular, to shorten the construction period and reduce the construction cost.

As a specific means for achieving the above object, in the wall construction method of connecting the underground wall to the bottom of the horizontal beam of the existing building for the expansion of the underground parking lot during the building remodeling construction,

H-beams are planted on the ground perpendicular to the four corners of the length of the outer wall of the existing building, while the excavation is carried out to construct the earth wall using the earth plate supported by the H-beam and turn the earth wall into the turnbuckle bar. A working space excavating step of supporting and securing a first working space, and digging around the outer wall while planting a plurality of vertical supports in a longitudinal direction of the existing building so as to be close to the outside of the outer wall;

After cutting the upper portion of the second work space to have a length spaced close to the outer wall of the vertical beam spaced to the bottom of the horizontal beam, the load of the iron plate is coupled to the upper portion between the bottom of the horizontal beam and the top of the vertical beam After installing the support horizontally press-fit, the load support installation step of sealing between the horizontal beam and the load support using epoxy cement;

Steel pipe press-in step of press-installing the upper steel pipe and the lower steel pipe corresponding to the bottom surface of the first working space so that the upper part and the lower part are interviewed with the bottom surface of the load support in the longitudinal direction of the outer wall in the upper and lower parts of the first working space. ;

While excavating the soil between the inside of the upper and lower steel pipes and the upper and lower steel pipes, the upper and lower surfaces of the upper and lower steel pipes are cut and opened to face each other, and both sides of the upper and lower steel pipes are opened. A building support step of installing a vertical support on the building to support the building and to prepare a wall construction space; And

In the wall construction space, it can be achieved by installing the reinforced formwork connecting the horizontal beam bottom of the existing building and the floor surface of the wall construction space, and completing the wall construction by curing the concrete. .

As described above, the underground wall construction method for the expansion of the underground parking lot of the present invention can secure partial work space and support reinforcement using steel pipes, props, and supports according to the construction of earth walls, thereby ensuring stability of existing buildings while being very convenient in construction. It is possible to achieve the construction in the unfinished state, and in particular, it is possible to obtain the effect of revitalizing the remodeling, such as the reduction of the construction period and the construction cost due to the expansion, which leads to the reduction of the investment cost according to the building remodeling.

Figure 1 is a simplified diagram showing the process steps of the underground wall construction method for the present invention underground parking lot extension.
Figure 2 is a plan view showing a working space excavation step of the underground wall construction method for the expansion of the underground parking lot of the present invention.
Figure 3 is a front sectional view showing a first workspace of the underground wall construction method for the present invention underground parking lot extension.
Figure 4 is a side cross-sectional view showing a secondary workspace of the underground wall construction method for expanding the underground parking lot of the present invention.
Figure 5 is a side cross-sectional view showing the load support installation step of the underground wall construction method for expanding the underground parking lot of the present invention.
Figure 6 is a cross-sectional view showing a steel pipe indentation step of the underground wall construction method for expanding the underground parking lot of the present invention.
Figure 7 is a side cross-sectional view showing the building support step of the underground wall construction method for expanding the underground parking lot of the present invention.
Figure 8 is a side cross-sectional view showing the wall completion step of the underground wall construction method for the present invention underground parking lot extension.
Figure 9 is a cross-sectional view showing the wall completion step of the underground wall construction method for the present invention underground parking lot extension.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a process step of an underground wall construction method for enlarging an underground parking lot of the present invention.

As shown in Figure 1, the underground wall construction method for the present invention underground parking lot extension, work space excavation step (S100), load support installation step (S200), steel pipe indentation step (S300), and building support step (S400) Then, the wall is completed by completing the step (S500).

Here, the work space excavation step (SlOO)

Figure 2 is a plan view showing a work space excavation step of the underground wall construction method for the expansion of the underground parking lot of the present invention,

As shown in FIG. 2, the first work space 110 and the second work space 120 are secured to one end portion of the outer wall 20 in the longitudinal direction of the existing building 10 and the outer wall side surface of the existing building 10, respectively. .

First, in order to secure the first work space 110, by setting the work zone by planting the H beam 130 on the ground perpendicular to the four corners at one end in the longitudinal direction of the outer wall 20 of the existing building 10, At this time, it is appropriate to set a work area corresponding to about 2 × 2m.

Thereafter, as shown in Figure 3, the excavation of the work area as much as the depth of the newly constructed wall, the excavation is to be done, while performing the excavation and at the same time the earth plate 132 is installed in the H-beam 130, the earth wall ( 131, and the first work space 110 corresponding to 2 × 2 m in the form of a space is secured between the earth walls 131.

On the other hand, turn buckle bar 140 for supporting the earth wall 131 facing each other inside and outside the building in the first workspace 110 in order to prevent collapse of the earth wall 131 constructed as described above by the earth pressure. ) Can be installed more.

At this time, the turnbuckle bar 140, as in the case of a conventional turnbuckle can be formed in the form that can support rods to both sides when tightening the nut body, the turnbuckle bar 140 is installed here, the H beam facing the inner, outer Supporting the earth plate (132) or facing the support 130, it is preferable to install in a range that does not interfere with the work in the first workspace (110).

In addition, in order to secure the second workspace 120, a plurality of vertical supports 121 in the form of H-beams vertically to be close to the outer wall 20 in the longitudinal direction of the existing building 10 as shown in FIG. Plant each one to reinforce the outer wall.

At this time, the vertical support 121 is installed as described above, it is preferable to configure a plurality (two) in a pair corresponding to both ends of the longitudinal direction of the outer wall (20).

Subsequently, in the state in which the vertical support 121 is constructed as shown in FIG. 4, the periphery of the outer wall is excavated to secure the second work space 120, and the second work space 120 is the first work space ( Excavation to the depth of the newly constructed wall as shown in 110, it is only necessary to perform excavation to a depth spaced below the horizontal beam 30 of the existing building (10).

Then, while performing the load support installation step (S200),

Figure 5 is a side cross-sectional view showing the step of installing the load support of the underground wall construction method for expanding the underground parking lot of the present invention,

As shown in FIG. 5, after cutting the upper part to have a length spaced apart from the horizontal beam 30 to the vertical support 121 installed near the outer wall in the second working space 120, the horizontal beam ( Between the bottom of the 30 and the upper end of the vertical support 121, the load support 200 to the inside of the existing building 10 in the horizontal direction corresponding to the vertical support 121, respectively, installed by press-installed, One end of the support 200 is located at the upper end of the vertical support 121 and the other end is located at the bottom of the horizontal beam (30).

At this time, the load support 200, may be configured in the form of a conventional H beam, the upper plate is configured in a state coupled to the iron plate (210).

In addition, while the epoxy plate 220 is injected between the iron plate 210 and the horizontal beam 30 of the load support 200 installed as described above, the horizontal beam 30 and the load support by the epoxy cement 220 Adhesion and sealing between the 200 may also prevent breakage of the contact surface between the load support 200 of the metal material and the horizontal beam 30 of the concrete material.

Meanwhile, a plurality of vertical supports 121 and load supports 200 are positioned at both ends of the outer wall 20 in the longitudinal direction. In this case, the load plates 200 may be connected to each other by using the iron plate 210. have.

In addition, the upper end of the vertical support 121 corresponding to both ends of the outer wall 20 is further provided with a jockey 211 capable of adjusting the spacing, the existing building between the jockey 211 and the load support 200 A load measuring device 212 for measuring the load transmitted from (10) can be further provided.

Here, installing the load measuring device 212 as described above, by measuring the load transmitted from the existing building 10 from time to time at both ends of the outer wall 20, to measure the stability of the existing building 10 according to the load changes during construction can do.

Here, the vertical supports 121 installed at both ends of the outer wall 20 may be provided with a jockey 211 and a load measuring device 212 as compared with the vertical supports 121 installed at the middle of the outer wall 20. It would be desirable to cut as short as possible.

After that, the steel pipe indentation step (S300) is performed,

6 is a cross-sectional view showing a steel pipe indentation step of the underground wall construction method for expanding the underground parking lot of the present invention,

As shown in FIG. 6, in the first workspace 110, the upper steel pipe 300 is press-fitted so that the upper part is interviewed with the bottom surface of the load support 200 in the longitudinal direction of the outer wall 20, and the lower part is the first work. What is necessary is to press-install the lower steel pipe 300 'corresponding to the bottom surface of the space 110, and the steel pipe used at this time can be used to select a square steel pipe or a circular steel pipe, the present invention applies a square steel pipe.

At this time, as the press-fit method of the upper and lower steel pipes (300, 300 '), as shown in the patent application registration No. 10-1070678 proposed by the applicant of the present invention using the hydraulic cylinder and the hydraulic jack using the leading pipe and steel pipe As an example of applying a press-fit method, looking at the press-fit state of the lower steel pipe 300 ',

First, the hydraulic cylinder 40 is installed in the longitudinal one side earth wall 131 of the outer wall 20 in the working space, and the lead pipe 41 is first press-fitted by the driving force of the hydraulic cylinder 40.

Subsequently, the lower steel pipe 300 ′ is inserted into the rear end of the lead pipe 41 press-fitted in the state where the hydraulic cylinder 40 is retracted, and is connected by the hydraulic jack 42.

Thereafter, the lower steel pipe 300 'may be press-fitted by the thrust force of the hydraulic cylinder 40, and the lead pipe 41 connected to the lower steel pipe 300' is also primary- press-fitted together, and then the hydraulic jack 42 ) Further pushes the lead pipe 41 secondarily.

Subsequently, another lower steel pipe 300 'is continuously welded to the rear of the lower steel pipe 300' that is press-fitted as described above, and each lower steel pipe 300 'is firstly press-fitted as described above. And second indentation may be performed continuously.

Here, in order to construct the upper and lower steel pipes 300 and 300 'as described above, it is preferable to remove the earth wall 131 on the side into which the upper and lower steel pipes 300 and 300' are press-fitted.

Then, while performing the building support step (S400),

Figure 7 is a side cross-sectional view showing the step of supporting the building of the underground wall construction method for expanding the underground parking lot of the present invention,

As shown in FIG. 7, the upper steel pipe 300 and the lower steel pipe 300 ′ are press-installed as described above to withstand the load and earth pressure of the existing building 10, which is the upper steel pipe 300 and the same. The excavation of the soil between the lower steel pipe (300 ') while the vertical support 410 of the H-beam type is installed vertically.

That is, the excavation of the earth and sand by cutting the bottom of the upper steel pipe 300 and the upper surface of the lower steel pipe 300 'in order to go, the cross section of the upper, lower steel pipes 300, 300' Is to form a form that is opposed to the 'c' open and the 'c' open top.

At the same time, the vertical support so as to connect the upper surface of the upper steel pipe 300 and the bottom surface of the lower steel pipe 300 'at both sides of the upper and lower steel pipes 300, 300' through the opening in the cut and open position. What is necessary is to install 410 vertically, thereby ensuring a strong support for supporting the existing building (10).

At this time, the vertical support 410 is installed as described above, preferably installed vertically to the lower portion of the load support 200, the vertical support 410 is installed to form a vertical line from the load support 200 do.

And, the vertical support 410 is installed as described above, the jockey 411 is formed so that the length can be adjusted in the middle portion, the length can be adjusted by the jockey 411, easy installation and upper, lower The pressing force of the steel pipes 300 and 300 'can be applied.

On the other hand, in the building support step (S400), it is possible to additionally perform the ground reinforcement work (S400a), where the ground reinforcement work (S400a) is to ensure the support of the reinforcement of the ground and newly constructed walls, As the reinforcement method, the bottom surface of the lower steel pipe 300 'may be partially cut or through holes may be removed and then cement grouted 52 to be installed.

Thereafter, a wall completion step S500 is performed,

Figure 8 is a side cross-sectional view showing the wall completion step of the underground wall construction method for the expansion of the underground parking lot of the present invention,

As shown in FIG. 8, first, a formwork (not shown) in which the reinforcing bars are installed in the wall construction space 500 is installed. The formwork is a bottom surface and a wall of the horizontal beam 30 of the existing building 10. What is necessary is to install so as to reach the bottom surface of the construction space 500, the concrete is placed and cured to form the wall 600, as shown in FIG.

Here, the construction of the formwork and when placing the concrete load support 200, the construction of the formwork and placing the concrete in the state as it is, the load support 200 can serve as a frame.

On the other hand, in the wall completion step (S500) it is possible to form a new horizontal beam 610 at the bottom of the wall 600, horizontal beam 610 is new at the bottom when installing the formwork for forming the wall 600 Forming the formwork to correspond to the horizontal beam 610, is formed by placing and curing the concrete for forming the wall (600).

The extension construction of the wall 600 is completed by a series of process steps as described above.

Meanwhile, the above-described wall extending construction method of the present invention has been described based on one surface of a plurality of wall surfaces constituting a building as an embodiment, and the same method can be applied when the other surface is constructed.

In addition, when constructing a plurality of basement layers when extending the wall as described above is to be carried out in the above-described continuous process, the ground reinforcement (S400a) will be preferably performed at the bottom.

In addition, the load support 200 and the upper and lower steel pipes 300, 300 'that are exposed to the inside of the wall 600 when excavating the interior of the building later in the state in which the construction of the wall 600 is completed as described above. The vertical support 410 should be removed, after which the finishing mortar will be performed on the wall.

As described above, the underground wall construction method for the expansion of the underground parking lot of the present invention enables safe and simple construction in a state where the existing building is safely supported and reinforced.

10: existing building 20: outer wall
30: horizontal beam 40: hydraulic cylinder
41: leading pipe 42: hydraulic jack
52: Cement Grouting
110: first workspace
120: second workspace 121: vertical holding
130: H beam 131: earth wall
132: earth plate 140: turnbuckle
200: load support 210: steel plate
211: jockey 212: load measuring instrument
220: epoxy cement
300,300 ': Upper and lower steel pipe
410: vertical support 411: jockey
500: wall construction space 600: wall
610: horizontal beam

Claims (4)

In the wall construction method in which an underground wall is connected to a horizontal bottom surface of an existing building in order to enlarge an underground parking lot at the remodeling work of a building,
H-beams are planted on the ground perpendicular to the four corners of the length of the outer wall of the existing building, while the excavation is carried out to construct the earth wall using the earth plate supported by the H-beam and turn the earth wall into the turnbuckle bar. Supporting and securing a first working space, digging around the outer wall while planting a plurality of vertical holding in the longitudinal direction of the existing building so as to be close to the outside of the outer wall excavation step (S100) ;
After cutting the upper portion of the second work space to have a length spaced close to the outer wall of the vertical beam spaced to the bottom of the horizontal beam, the load of the iron plate is coupled to the upper portion between the bottom of the horizontal beam and the top of the vertical beam After installing the support horizontally press-fitted, between the horizontal beam and the load support to install the load support step of sealing using epoxy cement (S200);
Steel pipe press-in step of press-installing the upper steel pipe and the lower steel pipe corresponding to the bottom surface of the first working space so that the upper part and the lower part are interviewed with the bottom surface of the load support in the longitudinal direction of the outer wall in the upper and lower parts of the first working space. (S300);
While excavating the soil between the inside of the upper and lower steel pipes and the upper and lower steel pipes, the upper and lower surfaces of the upper and lower steel pipes are cut and opened to face each other, and both sides of the upper and lower steel pipes are opened. Building support step of installing a vertical support having a jockey in the building support and wall construction space (S400); And
In the wall construction space is installed, the reinforced formwork connecting the horizontal beam bottom surface of the existing building and the floor surface of the wall construction space, and the concrete is poured into the wall finishing step (S500) for constructing the wall Underground wall construction method for extension of underground parking lot
The method of claim 1,
In the workspace excavation step (S100),
Vertical supports installed at both ends in the longitudinal direction of the outer wall is composed of a plurality of pairs,
In the load support installation step (S200),
Between the vertical support and the load support basement construction method for the underground parking lot extension, characterized in that it further installs a jockey for adjusting the gap and a load measuring device for measuring the load transmitted from the existing building.
The method of claim 1,
In the building support step (S400),
Underground wall construction method for the expansion of the underground parking lot characterized in that the ground reinforcement (S400a) to further grind the ground to reinforce the ground to the bottom of the lower steel pipe.
The method of claim 1,
In the wall completion step (S600),
When installing the formwork for the construction of the wall, the formwork at the bottom corresponding to the new horizontal beam,
A method of constructing an underground wall for extension of an underground parking lot, characterized in that a new horizontal beam is formed at the bottom together with a wall when curing concrete is poured.

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