KR100638841B1 - Method for constructing cellar - Google Patents

Abstract

The basement construction method according to the present invention is characterized by manufacturing an underground structure that forms a basement wall on the ground of the basement construction location, and then embeds the underground structure in the ground, and excavates the earth and sand in the embedded underground structure do. The underground structure includes a tip shoe made of a steel plate having a needle end and an inner wall of the reinforced concrete formed on the tip shoe and is embedded in the ground by a hydraulic indentation device. The hydraulic press-fitting device includes a support embedded in the ground, a hydraulic jack guide installed at a predetermined height on the support, a hydraulic jack installed on the hydraulic jack guide, a jack adapter for fixing a position of one end of the hydraulic jack to the hydraulic jack guide, and an underground structure at the other end of the hydraulic jack. It includes a bracket for coupling to the wall of the. With the jack adapter fixed at one point of the hydraulic jack guide, press the underground structure by operating the hydraulic jack and lowering the bracket. Then, press the jack adapter down to fix the jack adapter as much as the indentation amount, and then operate the hydraulic jack again to lower the bracket. Indent the structure into the ground.

Description

Basement construction method {METHOD FOR CONSTRUCTING CELLAR}             

1 is a plan view of a construction site in which a basement structure manufactured to perform a basement construction method according to an embodiment of the present invention and a plurality of indentation apparatuses for press-fitting the underground structure are arranged;

Figure 2 is a detailed view showing the main portion of Figure 1,

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a perspective view of a support constituting the indentation apparatus of the present invention, and

5 to 11 are views showing for explaining the basement construction method according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100; underground structure 110; tip shoe

111; water reservoir 112; water spray nozzle

120; reinforced concrete structures 121 and 122; inner and outer walls

123; water piping 124; screw auger guide piping

125; hydraulic jack bracket 200; hydraulic press-fit device

210; support 211; foundation pipe pile

212; earth anchor steel wire 213; concrete block and supporting plate

220; hydraulic jack guide 230; hydraulic jack

240; Jack Adapter 310; Screw Auger

330; free surface hole 340; scour auger over hole

410; pillar 420; work tool

430; slab

The present invention relates to a basement construction method for excavating the earth and sand in the underground structure after the underground structure is embedded in the underground installation.

In general, the basement construction method is to excavate the earth and sand after constructing the temporary facility at the basement construction site, install the wall to prevent the soil collapse by using a number of H-beams and earth plate, and then assemble the formwork and cast the concrete to install the basement. The so-called temporary mud wall construction, which constructs underground structures such as walls, is the mainstream.

However, in the basement construction method using the temporary soil membrane construction method as described above, when it is difficult to construct underground trenches due to excessive inflow of soft ground or groundwater, the earthquake-proof structure is constructed using the H-beam and the order grouting earth plate, and then the trench There is a disadvantage of air extension due to the increase of the number of processes such as excavation work and construction of underground structures.

In addition, the conventional basement construction method requires a long-term stratum deformation due to impossibility of perfect backfilling of H-shaped steel drawing space and earth plate installation, and compaction of the earth plate dismantling site, resulting in environmental hazards and surrounding settlements after completion. There is this. In other words, the space filled with soil is very narrow and perfect compaction work using the equipment is not smooth, and the backfilled area is deformed or settled by inducing deformation to the surrounding stable ground floor, thereby deforming or sinking. Together, buildings and roads are damaged.

The present invention has been made in view of the above, it is an object of the present invention to provide a basement construction method that can not only shorten the air, but also reduce the construction cost, and the surrounding ground subsidence phenomenon does not occur.

The basement construction method according to the present invention for achieving the above object is to produce an underground structure that forms a basement wall on the ground of the basement construction position, and then the basement is embedded in the underground, the earth and sand in the underground structure embedded in the underground It is characterized in that the construction by excavating.

The underground structure includes a tip shoe made of a steel plate having a needle end, an inner wall of the reinforced concrete formed at a predetermined height on the tip shoe, an outer wall, and a bracket installed on the wall, and is embedded in the ground by a hydraulic indentation device. .

The hydraulic press-fit apparatus includes a support embedded in the basement, a hydraulic jack guide installed in the support at a predetermined height, a hydraulic jack installed on the hydraulic jack guide, and a jack adapter to fix the hydraulic jack to the hydraulic jack guide.

The hydraulic jack is coupled to the underground structure by the bracket, and the jack is lowered by lowering the bracket by operating the hydraulic jack while the jack adapter is fixed to any one point of the hydraulic jack guide, and presses the position of the jack adapter by the amount of indentation. In the fixed down state, the hydraulic jack is operated again to repeat the process of descending the bracket, and the underground structure is press-filled in the ground.

According to an embodiment of the present invention, when the underground structures are pressurized during the underground pressurization, water is injected into the soil in front of the tip shoe, and the excavation of the ground structures is facilitated by the screw auger, thereby making the pressurization of the underground structures easy. For this purpose, the underground structure includes a plurality of water pipes and a screw auger guide pipe, and the tip shoe temporarily stores water supplied through the water pipe and includes a water storage unit having a plurality of water nozzles.

According to a preferred embodiment of the present invention, the basement construction method

a) setting a line in accordance with the shape and size of the basement to be constructed and then installing a plurality of hydraulic indentations adjacent to the line;

b) assembling and installing a tip shoe made of an iron plate having a needle end and a water reservoir formed with a plurality of water spray nozzles along the line;

c) forming an underground structure including reinforced concrete, outer wall, water pipe, and screw auger guide pipe in the tip shoe;

d) connecting the underground structure and the plurality of hydraulic indentation devices and simultaneously operating a hydraulic indentation device to press-fit the underground structure to the ground;

e) placing a plurality of pipes in the underground structure embedded in the ground and installing a plurality of pillars arranged at a predetermined interval by reinforcing reinforcement and concrete placing therein; And

f) Constructing a plurality of slabs from the top to the bottom by constructing the upper slab on the upper front except for at least two working tools for post-working, and excavating and removing the soil of the lower upper slab through the working tool through curing. It is configured to include.

According to another embodiment of the present invention, after setting the line according to the shape and size of the basement to be constructed in step a), a plurality of holes are drilled along the line and filled with bentonite mixture in the hole to loosen and disintegrate the soil. It may further comprise a step of preventing, in this case the tip shoe is installed on the top of the bentonite filling hole.

The installing of the hydraulic indentation apparatus may include: putting a plurality of foundation pipe piles in the ground of a position where the hydraulic indentation apparatus is to be installed; Installing and milk grouting an earth anchor steel wire inside each of the foundation pipe piles; Assembling concrete blocks and supporting steel plates on the plurality of foundation pipe files and tensioning and fixing each earth anchor steel wire; Assembling a hydraulic jack guide to the support steel plate; And installing a hydraulic jack using a jack adapter to the hydraulic jack guide, and connecting and assembling the power unit to enable the operation of the hydraulic jack.

In addition, the underground structure includes a bracket for coupling the underground structure and the hydraulic jack, the hydraulic jack and the underground structure by coupling the hydraulic jack and the underground structure with the bracket and the jack jack fixed to any point of the hydraulic jack guide hydraulic jack to the power unit Press the bracket to lower the basement structure, press the jack adapter down one level as much as the pressurization amount of the basement structure, and operate the hydraulic jack again with the power unit to repeat the process of further press-fitting the underground structure. Can be embedded in the ground.

In addition, when the underground structure is press-fitted into the ground, it is preferable to excavate and disturb the earth and sand in front of the tip shoe of the underground structure with a screw auger installed through a screw auger guide pipe and to spray water supplied to the water pipe. .

In addition, when laying the slab concrete in the step of constructing the slab it is preferable to drive a small diameter pipe in the ground and grout the bottom of the entire floor with cement milk using this pipe to prevent settlement of the structure.

In addition, after the construction according to the above step boring the soil of the lower part of the underground structure with a screw auger through the screw auger guide pipe of the underground structure, and then press the H beam into the boring hole and cement with a high pressure pump through the water pipe It is desirable to refill the bottom by filling milk grouting.

If the basement is large, it may be divided into a plurality of parts according to the size, and the underground structure may be formed according to the above-described steps for each part.

Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described based on the accompanying drawings.

1 is a plan view of a construction site in which a basement structure manufactured to perform a basement construction method according to an embodiment of the present invention and a plurality of indentation apparatuses for press-fitting the basement structure are arranged, and FIG. 2 is a main part of FIG. 1. 3 is a cross-sectional view taken along line AA of FIG. 2, and FIG. 4 is a perspective view of a support constituting the press-fit device of the present invention.

In the drawings, reference numeral 100 denotes an underground structure, and 200 denotes a hydraulic indentation device for forcibly inserting the underground structure into the underground of the basement construction position.

The underground structure 100 is appropriately manufactured according to the structure and size of the basement to be constructed. That is, the underground structure 100 may have various shapes such as a rectangle, a pentagon, and a circle according to the shape of the basement. In the case of the rectangular structure, it is common to manufacture a single structure in which four walls are integrally formed as shown in the example of the drawing. Depending on the site conditions, it is also possible to separate each of the four walls.

The underground structure 100 is embedded in the basement to form a basement wall, and includes a tip shoe 110 at the lower end and a reinforced concrete structure 120 thereon.

The tip shoe 110 is formed in the shape of an arrowhead or knitted arrowhead having a needle-shaped end so that it can be easily indented while cutting the earth and sand when pressing the underground structure 100 in the ground, it is made of iron plate. In addition, the tip shoe 110 is provided with a water storage unit 111, the water of the water storage unit 111 along the longitudinal direction at the end of the water storage unit 111 in front of the front shoe 110. A plurality of water spray nozzles 112 for spraying to the sand of the is formed. In addition, the tip shoe 110 is manufactured to have a thickness slightly larger than the thickness of the reinforced concrete structure 120 to be described later. This is for easy underground indentation of the reinforced concrete structure 120, which will be described later.

The reinforced concrete structure 120 is formed at a predetermined height on the tip shoe 110, and a water pipe for supplying water to the inner and outer walls 121 and 122 and the water storage 111. 123, a bracket for coupling with a screw auger guide pipe 124 for installing a screw auger 310 for excavating and disturbing the soil in front of the tip shoe 110 and the hydraulic press-fit device 200 to be described later 125 and the like. The reinforced concrete structure 120 installs formwork inside or outside of the tip shoe 110 and reinforces along the tip shoe 110. Then, the water pipe 123, screw auger guide pipe 124, bracket 125 and the various anchors are tightly woven with the reinforcing bar, then install the opposite formwork and cast concrete to cure enough to dismantle the formwork To make.

As shown in FIG. 1, the hydraulic press-fit device 200 is provided in a plurality of inner four corner portions of the underground structure 100 and outside the front and rear walls of the figure. However, the installation position or the number of the hydraulic press-fit device 200 is not limited to the case of the illustrated example, it can be flexibly coped according to the structure and size of the underground structure (100).

3 and 4, the hydraulic press-fit device 200 is installed in the support 210 embedded in the ground, the hydraulic jack guide 220 installed in the support 210, the hydraulic jack guide 220. A hydraulic jack 230, a jack adapter 240 for fixing the hydraulic jack 230 to the hydraulic jack guide 220 so as to be movable, and a power unit (not shown) for operating the hydraulic jack 230. In addition, the support 210 includes a plurality of foundation pipe piles 211, earth anchor steel wires 212, concrete blocks, and supporting steel plates 213.

The hydraulic press-fit apparatus 200 drives a plurality of the foundation pipe piles 211 at the installation position thereof, and then installs and anchors the ground anchor steel wires 212 in each foundation pipe pile 211. Then, assembling the supporting steel plate 213 on the upper portion of the foundation pipe pile 211, each earth anchor steel wire 212 is fixed by fixing, and the hydraulic jack guide 220 is assembled to the supporting steel plate 213. A plurality of jack support pin holes 221 are formed at predetermined intervals in the hydraulic jack guide 220. The jack adapter 240 coupled to one end of the hydraulic jack 230 is assembled to the hydraulic jack guide 220 by inserting the support pin 241 into the jack support pin hole 221 of the hydraulic jack guide 220. Finally, a plurality of hydraulic press-fit devices 200 are installed by assembling and connecting the hydraulic jack 230 assembled to the hydraulic jack guide 220 to the power unit as described above.

The prefabricated underground structure 100 fabricated as described above in a basement construction position, and in the state where a plurality of hydraulic indentation apparatus 200 is installed in place, the bracket 125 provided in the underground structure 100 is a hydraulic indentation apparatus. When the hydraulic jack 230 is operated while connecting to the hydraulic jack 230 of the 200 and controlling the power unit, the underground structure 100 may be forced to be buried to be buried to the desired depth.

That is, when the hydraulic jack 230 is operated in a state where the jack adapter 240 is fixed to the pin support hole at the top of the hydraulic jack guide 220, the bracket 125 coupled to the hydraulic jack 230 descends, thereby causing the underground structure 100 to fall. It is press-in by a certain amount in this underground. Subsequently, the hydraulic jack 230 is operated again in a state where the jack adapter 240 is lowered by one level by the amount of the underground structure 100 press-fitted to further press-in the underground structure 100. This process is repeated several times to indent the underground structure 100 to the desired depth in the ground.

On the other hand, in the underground indentation process of the underground structure 100 as described above, it may be difficult to intrude the earth structure 100, so that the intrusion of the underground structure 100 is difficult to cut. In such a case, the screw auger 310 is installed in the plurality of screw auger guide pipes 124 provided in the underground structure 100 to excavate the tip soil and disturb the soil, thereby easily press-fitting the underground structure 100 underground. It can be done.

In addition, by injecting water into the tip soil of the tip shoe 110 using the water pipe 123 while pressing the underground structure 100 can be more smoothly work. In addition, the underground structure 100 according to the present invention may be smoothly press-fitted while being over-excavated when the underground structure is pressed because the thickness of the tip shoe is slightly larger than the thickness of the reinforced concrete structure.

In addition, in order to facilitate the underground indentation of the underground structure 100, as shown in Figures 1 and 2, a plurality of free surface holes 330 and screw auger over hole 340 in the ground adjacent to the underground structure 100 And perforations to fill bentonite in the free surface hole 330 and use it as a lubricant.

On the other hand, by proceeding as described above to press-fill the underground structure 100 to the desired depth in the basement construction location underground, and then excavated and lifted the soil inside the buried underground structure 100 while the underground structure ( Proceed to the step of installing the reinforcement to prevent future variation of 100). This reinforcement is boring the soil of the lower part of the underground structure 100 with the screw auger 310 through the screw auger guide pipe 124 of the underground structure 100, put the H beam in the boring hole, water pipe 123 It is installed by filling cement milk grouting with high pressure pump.

Finally, by constructing the upper and lower slabs in the underground space prepared through the above work, to build a basement.

5 to 11 are views for explaining a cellar construction method according to another embodiment of the present invention. As can be seen through the drawings, the basic construction is not significantly different from the embodiment of the present invention described above. Accordingly, like reference numerals refer to like elements, and overlapping processes will be described as simply as possible, and detailed features of the present embodiment will be described in detail.

In the first construction step of the basement construction method according to the present embodiment, as shown in Figure 5, the line is set according to the size of the basement to be constructed, and then a plurality of holes are drilled along the line, and the bentonite mixed pressure liquid in the hole To fill the soil to prevent loosening and collapse.

Then, as described above, to install the support 210 constituting the hydraulic indentation apparatus 200 required to press the underground structure in the ground (see Fig. 6), the hydraulic unit 200 is installed on the support 210 (See FIG. 7).

After installing a plurality of hydraulic indentation apparatus 200 in place, the front end shoe 110 made of steel plate is assembled to the top of the hole filled with the bentonite mixture solution to match the shape of the underground structure.

Subsequently, as shown in FIGS. 8A and 8B, the formwork is assembled on the tip shoe 110 and the reinforcing bars are installed, and then the water pipe 123, the screw auger guide pipe 124, and the bracket 125 are assembled by reinforcing steel bars. And assembling the formwork on one side to build the concrete and process the desired underground structure (100).

Subsequently, the underground structure 100 is connected to the plurality of hydraulic indentation apparatuses 200 and the hydraulic indentation apparatus 200 is operated at the same time to press-fit the underground structure 100 to the ground.

After embedding the underground structure 100 by the above operation, as shown in Figure 9 inside the underground structure 100, a plurality of pipes are placed at a predetermined interval by placing reinforcement, concrete placing therein Install the pillars 410. Here, it is advantageous for building safety to press the end of the pillar 410 to the rocky line as deep as possible. In FIG. 9, reference numeral 420 denotes a work tool.

After setting the plurality of pillars 410 as described above, except for the work tool 420 for post-work on the upper part of the underground structure 100, the upper slab 430 is constructed (see FIG. 10). Then, after undergoing a predetermined curing process, the earth and sand of the lower portion of the slab 430 is excavated and removed through the work tool 420. By forming a plurality of slabs from the top to the bottom in the same manner as described above it is possible to easily build a basement of a plurality of floors. At this time, since the upper slab 430 is constructed and then the lower structures are constructed, it is possible to shorten the air, such as being able to construct buildings on the ground at the same time.

Thereafter, as shown in FIG. 11, a step of installing a reinforcement for preventing further variation of the underground structure 100 is performed. When the bottom slab concrete is poured in the slab construction step, a small diameter pipe may be driven into the ground to fill the entire floor with cement milk 450 to prevent settlement of the structure. Further, after boring the soil of the lower part of the underground structure with a screw auger through the screw auger guide pipe of the underground structure, the H beam 440 may be pressed into the boring hole. In particular, when there is a rock 460 in the lower part of the underground structure, by drilling the rock to access the H-beam or pipe, there is an advantage that it is possible to prevent settlement and safe construction.

If the basement is large, it is not easy to carry out the above steps by the underground structure by the walls that make up the outer wall. Therefore, the basement plane is divided into a plurality of parts according to the size, and the outer wall and the intermediate wall are formed for each part. Underground structures can be formed and constructed in accordance with the methods described above for each.

According to the present invention as described above, since the underground structure manufactured on the ground is constructed by press-filling in the ground using a hydraulic indentation device at the position where the basement is to be built, the H-shaped steel foil conventional process or order grouting earth plate The process can be greatly reduced, such as eliminating the installation process, and there is an advantage in that construction is easy regardless of the size, shape or depth of the basement.

In addition, in the slab construction, unlike the conventional construction in the reverse direction from the top to the bottom, after the construction of the upper slab to excavate the soil below it is possible to safely and quickly construction.

Moreover, according to the present invention, the air can be shortened considerably, such as the construction of the basement and the ground building at the same time, thereby reducing the cost of the air. In addition, the basement construction method according to the present invention has the advantage that can be quickly installed in the building dense area of the city where the working space is narrow without ground subsidence.

While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (12)

A basement construction method comprising fabricating an underground structure that forms a basement wall on the ground of a basement construction location, and then press-filling the underground structure in the ground, and excavating soil in the underground structure embedded in the underground. The method of claim 1, The underground structure includes a tip shoe made of a steel plate having a needle end, an inner wall of the reinforced concrete formed at a predetermined height on the tip shoe, an outer wall and a bracket installed on the wall, and are embedded in the ground by a hydraulic indentation device. Basement construction method, characterized in that. The method of claim 2, The hydraulic press-fit apparatus includes a support embedded in the basement, a hydraulic jack guide installed in the support at a predetermined height, a hydraulic jack installed in the hydraulic jack guide and a jack adapter for fixing the hydraulic jack to the hydraulic jack guide. Combining the hydraulic jack and the underground structure by the bracket, and operating the hydraulic jack in a state in which the jack adapter is fixed to any one point of the hydraulic jack guide to lower the bracket to press-fit the underground structure, the jack adapter by the amount of indentation of the underground structure Basement construction method characterized in that the underground structure is embedded in the ground by repeating the process of lowering the bracket by operating the hydraulic jack again in the fixed down state. The method of claim 3, wherein In order to facilitate the indentation of the underground structure by injecting water into the soil in front of the tip shoe during underground press-in of the underground structure and by using the screw auger to disturb and excavate the soil, the underground structure includes a plurality of water pipes and And a screw auger guide pipe, wherein the tip shoe temporarily stores water supplied through the water pipe and has a water storage unit having a plurality of water nozzles. a) setting a line in accordance with the shape and size of the basement to be constructed and then installing a plurality of hydraulic indentations adjacent to the line; b) assembling and installing a tip shoe made of an iron plate having a needle end and a water reservoir formed with a plurality of water spray nozzles along the line; c) forming an underground structure including reinforced concrete, outer wall, water pipe, and screw auger guide pipe in the tip shoe; d) connecting the underground structure and the plurality of hydraulic indentation devices and simultaneously operating a hydraulic indentation device to press-fit the underground structure to the ground; e) placing a plurality of pipes in the underground structure embedded in the ground and installing a plurality of pillars arranged at a predetermined interval by reinforcing reinforcement and concrete placing therein; And f) Constructing a plurality of slabs from the top to the bottom by constructing the upper slab on the upper front except for at least two working tools for post-working, and excavating and removing the soil of the lower upper slab through the working tool through curing. step; Basement construction method comprising a. The method of claim 5, wherein step a) comprises: After setting the line according to the shape and size of the basement to be constructed, perforating a plurality of holes along the line and filling the bentonite mixture in the hole to prevent soil loosening and collapse; further comprising the basement construction Method. According to claim 5, wherein the installation of a plurality of hydraulic indentation device in step a), Embedding a plurality of foundation pipe piles in the ground of the location where the hydraulic indenter is to be installed; Installing and milk grouting an earth anchor steel wire inside each of the foundation pipe piles; Assembling concrete blocks and supporting steel plates on the plurality of foundation pipe piles and tensioning and fixing each earth anchor steel wire; Assembling a hydraulic jack guide to the support steel plate; And And installing a hydraulic jack by using a jack adapter on the hydraulic jack guide, and connecting and assembling the power unit to enable the operation of the hydraulic jack. The method according to claim 5 or 7, The underground structure has a bracket for coupling the underground structure and the hydraulic jack, The hydraulic jack is coupled to the underground structure by the bracket, and the jack is lowered by lowering the bracket by operating the hydraulic jack with the power unit while the jack adapter is fixed at one point of the hydraulic jack guide. Basement construction method characterized in that the step d) by repeating the process of further pressing the underground structure by operating the hydraulic jack back to the power unit in the fixed down jack adapter. The method of claim 5, wherein And digging the soil in front of the tip shoe of the underground structure with a screw auger installed through a screw auger guide pipe in step d), and spraying water supplied to the water pipe. The method of claim 5, wherein When the bottom slab concrete is poured in the step f) basement construction method characterized in that the small diameter pipes are embedded in the ground and the grout is filled with cement milk under the entire floor using this pipe to prevent settlement of the structure. The method of claim 5, wherein after step f): After boring the earth and sand under the underground structure with a screw auger through the screw auger guide pipe of the underground structure, press the H beam into the boring hole and reinforce the lower part by filling the cement milk grouting with a high pressure pump through the water pipe. Basement construction method characterized in that it further comprises a step. Basement construction method characterized in that the basement is divided into a plurality of parts according to the size and each part is formed by constructing underground structures by the method according to claim 5-11.

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