KR100458821B1 - The length adjustable lagging and its using method of braced wall construction - Google Patents

Abstract

The present invention relates to a length-adjustable earth plate installed in order to prevent the sediment of the edge of the sedimentation and flow down in the construction of the trench to form the temporary structure in the basement and the ground, and the earth wall temporary installation method using the same. Length-adjustable earth plate and length-adjustable sliding slab to be installed at regular intervals between hedge beams at predetermined intervals and according to the progress of excavation. The present invention relates to a method for installing a temporary earth wall installation, which facilitates the installation of the earth plate by using the earth plate and facilitates dismantling, drawing and collecting the earth plate after the construction.

According to the present invention, there is provided a length adjustable earth plate slidingly adjustable in length, and by using the same, there is provided a method for installing an earth wall temporary facility for easy installation and removal of the earth plate.

Description

The length adjustable lagging and its using method of braced wall construction}

The present invention relates to a length-adjustable earth plate installed in order to prevent the sediment of the edge of the sedimentation and flow down in the construction of the trench to form the temporary structure in the basement and the ground, and the earth wall temporary installation method using the same. Length-adjustable earth plate and length-adjustable sliding slab to be installed at regular intervals between hedge beams at predetermined intervals and according to the progress of excavation. The present invention relates to a method for installing a temporary earth wall installation, which facilitates the installation of the earth plate by using the earth plate and facilitates dismantling, drawing and collecting the earth plate after the construction.

The land use of Korea is mainly concentrated in large cities, and due to the lack of available land, high-rise and high-density urban areas are accelerating. As the use of high-rise and densified lands increases the size of underground structures, close construction with neighboring buildings is inevitable, and the slopes, cracks, and collapses of nearby buildings, including settlement of adjacent roads, It is a frequent occurrence, resulting in a number of social problems caused by a number of complaints and civil and criminal disputes, including property loss. Therefore, the selection of construction method and member for earth wall temporary construction work in underground excavation has emerged as a very important factor.

Conventional earth wall wall installation methods in which wood soil plates are used are used with H-beams scaffold piles together with wood soil plates. In other words, the earthwork temporary piles are driven at a predetermined interval (1.5m ~ 1.8m), and as the advancement of the excavation progresses, the earthen board is sandwiched between the earthwork temporary piles to receive earth pressure, and the earth pressure acting on the earthwork temporary piles through the wood earthen board. The belt is transmitted to the belt and the belt is supported by the braces.

Check the first stage of the installation of the temporary scaffold pile piled at predetermined intervals, the second stage of excavation excavation to a certain depth, the span of the excavated temporary scaffold pile of the excavated earth wall, and cut the wood soil plate with a saw. The third stage of the installation of wooden earthen boards, which are placed horizontally between piles and stacked horizontally between piles, and the fourth stage of excavation, which excavates to a certain depth, and the earthenware of the excavated earth walls. Check the span of the pile, cut the wood earthen board with a saw, insert it diagonally between the scaffold piles, install it horizontally, and push it to the lower part of the wood earthen board already installed on the upper side. After the installation of earth and wood soil plate, The sixth step of the reinforcement installation to install the brace for the support of the crossing band, and the seventh step of the repetition of the above four to six steps, and after completion of the underground structure, The eighth step of dismantling the wood soil plate to dismantle the wood soil plate when the soil is backfilled in order, and the ninth step of filling the space of the dismantled furniture temporary pile and the wood soil plate.

In the above conventional method, it is difficult to put vertically at the time of driving the earthenware temporary piles, and the intervals of the depths are not constant after installation, so that the span of the earthenware temporary stakes is measured in order to insert the wood soil plate, and the individual woods are cut by a saw. By cutting and inserting the earth plate, material loss and installation are inconvenient, installation time and installation cost are excessive, and disassembly is almost impossible due to earth pressure. In addition, although it must be dismantled and collected, it is difficult to be recycled due to uneven specifications, which are cut and dismantled, so that it is usually buried as it is not dismantled. It is becoming.

Particularly, in case of drawing and filling the earthenware temporary pile without dismantling and removing the earthenware, for the convenience of construction, the wood earthen board is entangled during the drawing and filling of the earthenware temporary pile and the soil is not filled properly. Since the space portion is formed, examples of large-scale accidents in which the ground collapses due to infiltration of rainwater and running water are frequently generated.

It is an object of the present invention to easily install and dismantle between uneven spans according to the depths of the temporary wall of the temporary block, which is difficult to be installed vertically in view of the conventional problems as described above, so that the length of the sliding type can be recycled after dismantling. To provide a length adjustable earth plate is adjusted to.

In addition, another object of the present invention is to provide a soil wall temporary installation method that can supplement the weak stiffness of the conventional wood earth plate, and can prevent safety accidents such as ground collapse when the wood earth plate is left.

1 is an exemplary view of the construction using the length adjustable earth plate of the present invention.

Figure 2 is a perspective view of the basic embodiment of the length adjustable earth plate of the present invention.

Figure 3 is a detailed installation state of the length adjustable earth plate of the present invention.

4 is a plan view of the portion “A” of FIG. 1.

5 is a perspective view of another embodiment of the length adjustable earth plate of the present invention.

6 is a cross-sectional view of the basic earth plate body, taken along line B-B in FIGS. 2 and 5;

7 is a cross-sectional view of the earth plate body of another embodiment, taken along line B-B in FIGS.

8 is a perspective view of another embodiment of the length adjustable earth plate of the present invention.

9 is a cross-sectional view taken along line "C-C" of FIG.

10 is a perspective view of another embodiment of the length adjuster.

FIG. 11 is a sectional view taken along the line “D-D” of FIG. 10.

12 is a perspective view of another embodiment of the length adjustable earth plate of the present invention.

<Explanation of symbols for the main parts of the drawings>

DESCRIPTION OF REFERENCE NUMERALS 1 earthwork temporary pile 2 length adjustable earth plate 3 strip

4: brace 5: post pile 6, 6 ', 6' ': gusset

7 nut 8, 8 'fixing member 9 earth plate main body

10, 10 ': Fixed plate 11, 11', 11 '', 11 '' ': Length adjuster

12 bolt 13 pin 14 pinhole

15: nail 16: insertion hole

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a construction example using the adjustable length of the earth plate of the present invention, the length adjustable earth plate (2) is installed to be stacked between the soil-retaining pile pile (1) of H-shaped steel embedded at regular intervals, for each predetermined depth A belt post (3) is installed across the earthwork temporary pile (1), a brace (4) for supporting the opposing band (3) is installed, and a vertical post pile (5) for supporting the brace (4) at a certain point. ) Is installed.

Figure 2 is a perspective view of the basic embodiment of the length adjustable earth plate of the present invention, the reinforcing plate (6) is welded and the fixing member (8) in which the nut (7) is welded to the bottom flat surface bent in a U-shape at both ends Welded cross section " "The cross section in which the shape of the earth plate main body 9 and the reinforcing plate 6 'are welded and having the same cross section as the fixing member 8 is welded to the fixing plate 10 which is coupled to the fixing member 8 is" "The length adjuster 11 is shaped, and the length adjuster 11 is inserted into the opening part of the earth plate main body 9, and the entrance and exit is freely made by the sliding type, and the degree of entry and exit is fixed by the bolt 12, An adjustable length adjustable earth plate 2 is shown, wherein the U-shaped bent portion of the fastening member 8 is such that the head of the bolt 12 does not protrude even after the bolt 12 is fastened to the nut 7. It is formed in order to facilitate the loading and storage of the adjustable earth plate 2, and also serves to prevent safety accidents by excluding the protrusion after installation.

The earth plate main body 9 and the length adjuster 11 of the present invention, which is configured as described above, can be implemented as FRP or synthetic resin, as well as lightweight C-shaped steel.

The length-adjustable earth plate 2 of the present invention configured as described above is used in the earth wall temporary installation method as shown in FIGS. 1 and 3 and 4, and is installed to be stacked between the temporary wall piles 1 and is mounted on a conventional wood earth plate. In comparison, the installation and dismantling is easier and the earth pressure can be effectively supported.

In addition, the length adjustable earth plate 2 of the present invention may be implemented by inserting the length adjuster 11 only at one end of the earth plate main body 9 as shown in FIG. 5. That is, the earthing plate main body in which the fixing member 8, on which the nut 7 is welded, is welded to the bottom flat surface bent in a U-shape in an opening on one side of the earthing plate main body 9, and the fixing member 8 is welded. The length adjuster 11 is inserted only at one end of 9) to be freely installed and fixed by the bolt 12, and the reinforcing plate 6 may be welded to the other end opening of the earth plate main body 9. The fastening structure by the bolt 12 is shown in FIG. 6, which is the "BB" cross section of FIGS. 2 and 5, in which the bolt 12 fastened to the nut 7 welded to the fastening member 8 is adjusted in length. The fixing plate 10 welded to the sieve 11 is pressed to fix the earth plate main body 9 and the length adjuster 11.

In addition, in order to increase the rigidity of the earth plate main body 9 and the length adjuster 11, the basic plate having one surface of the earth plate main body 9 and the length adjuster 11 as shown in FIG. 6 is improved, and the earth plate as shown in FIG. Two rows of U-shaped bent portions may be formed on one surface of the main body 9 and the length adjuster 11 so that the protrusions protrude into the earth plate main body 9 and the length adjuster 11.

Here, the length adjuster 11 of the basic embodiment as shown in Figure 2 can be implemented in wood as shown in FIG. That is, the length adjuster 11 '' of the wood having the U-shaped groove into which the U-shaped groove of the fixing member 8 is inserted is inserted into both openings of the earth plate main body 9 so that the sliding type can be freely moved. , The bolt 12 is fastened to the nut 7 welded to the fastening member 8 in FIG. 11 of the "DD" section of FIG. 10 as shown in FIG. The U-shaped groove portion of ') is pressed to fix the earth plate main body 9 and the length adjuster 11' '.

In addition, the pin 12 and the pin hole 14 may be implemented in addition to the fastening means of the bolt 12 and the nut 7 which are the basic fixing means. That is, the structure of the fixing member 8 and the fixing plate 10 welded to both ends of the earth plate main body 9 as shown in Figs. 8 and 9 is changed, and the pinhole 14 into which the pin 13 is inserted is formed. A fixing member 8 'having a U-shaped bent portion having a bottom flat surface is welded at both ends thereof, and a fixing member 8' having the same cross-section as the fixing member 8 'at one end thereof. Length adjusting body in which a fixed plate 10 'formed with a plurality of pinholes 14 at equal intervals is welded on a surface in contact with the bottom flat surface on which the pinholes 14 are formed, and a reinforcement plate 6' is welded at the other end and the center. (11 '), the length adjusting body (11') is inserted into both openings of the earth plate main body (9), and the movement of the length adjusting body (11 ') is fixed by inserting the pin (13) into the pin hole (14). It is installed freely in sliding type. The fixing structure by the pin 13 described above is fixed to the pin hole 14 of the fixing member 8 'and the fixing plate 10' of the length adjusting member 11 'in the section "CC" of FIG. 8 as shown in FIG. One of the pinholes 14 formed at equal intervals is installed to coincide, and the pin 13 is inserted into the overlapping pinholes 14 so that the length adjuster 11 'is fixedly installed in the length-adjustable earth plate 2. Have

In another embodiment of the length-adjustable earth plate 2, as shown in FIG. 12, a reinforcement plate 6 '' having an insertion hole 16 into which nails 15 are inserted at both ends of the opening of the earth plate body 9 is welded. The reinforcing plate 6 is welded to the center of the earth plate main body 9, and the wooden length adjusting member 11 '' of the rectangular parallelepiped is inserted into both ends of the earth plate main body 9 to fix the nail 15. It can also be carried out with the length adjustable earth plate (2).

The length adjustable earth plate 2 of the present invention as described above can be easily installed between the sections according to the depth of the soil wall temporary pile (1) difficult to vertically, disassembly is also easy.

Therefore, the installation and dismantling action of the length-adjustable earth plate 2 of the present invention having various materials and embodiments of various structures as described above are as follows.

First, the operation at the time of installation will be described with reference to Fig. 2, which is a basic embodiment, by adjusting the length of the loosening bolts 12 so that the length-adjustable earth plate 2 can easily enter between the spans of the provisional temporary piles 1. Both sides of the length adjusting body (11) inserted into the earth plate (2) is freed, the length adjusting body 11 is pushed into the inside of the earth plate main body (9) to shorten the length of the length adjustable earth plate (2), length adjustment The earthenware type plate (2) is inserted horizontally between the earthenware temporary piles (1), and the length adjuster (11) of both sides of the length adjustable earthenware plate (2) is pulled out so as to contact the earthenware temporary piles (1), the bolt (12) ), The length adjuster 11 is fixed to the earth plate main body 9 of the length adjustable earth plate 2.

When the length adjustable earth plate 2 is installed to be stacked between the spans, the installation of the length adjustable earth plate 2 to the excavated portion is completed.

In addition to the basic embodiment as described above, the embodiment as shown in Figure 5 is to adjust the length of the length-adjustable earth plate 2 using only one end of the length adjuster 11, the earth plate main body 9 as shown in FIG. By forming a U-shaped bent portion on one side of the length adjusting body 11 can support more earth pressure, and when using the pin 13 instead of the bolt 12 as shown in FIG. After adjusting the length of the length adjustable earth plate 2 by using the pin hole 14 of the fixing member 8 'and the fixing plate 10' of the length adjusting body 11 ', the pin 13 is inserted into the earth plate. The length adjuster 11 'is fixed to the main body 9 to support the earth pressure, and when the length adjuster 11' 'is made of wood and used as shown in FIG. 10, an end portion of the earth plate main body 9 is used. The bolt 12 is fastened to the nut 7 welded to the fixing member 8 installed on the bolt 12 by pressing the length adjuster 11 '' of the wood. By fixing the length adjuster 11 '' of the wood in the earthen board body 9 so that the adjustable earthen board 2 is installed in the earthwork temporary pile 1, so that it can withstand earth pressure, and as shown in FIG. After adjusting the length of the length-adjustable earth plate 2 using the length adjuster 11 '' 'of the wood having the shape of a column, the length adjuster 11' 'by inserting the nail 15 into the insertion hole ') Is fixed to the earth plate body (9) to support the earth pressure.

Since the length-adjustable earth plate 2 is installed in the same manner as above, the conventional wood earth plate is cut, and the space between the spans must be obliquely between the spans so that the required space is not necessary in the present invention, the length-adjustable earth plate ( Installation is possible even if there is space as much as 2).

And, when looking at the dismantling action of the present invention to loosen the bolt 12 to free the length adjusting body (11) (11 ''), or pull out the pin 13 to free the length adjusting body (11 '), nail (15) ) To free the length adjuster 11 '' ', and then move the length adjuster 11, 11', 11 '' and 11 '' 'to the inside of the earth plate body 9 If the length of the adjustable earth plate (2) is shortened and pulled out as it is, the earthenware is dismantled between the spans of the temporary piles (1).

The adjustable length of the earth plate (2) that can be variously implemented as described above has a number of advantages over the conventional wood earth plate, the length of the adjustable earth plate (2) consisting of lightweight C-shaped steel which is a basic embodiment of the present invention and the conventional Experimental data comparing wood soil plates are shown in the table below.

Wood earthen board (ⓐ) Adjustable length earth plate (ⓑ) Ⓑ / ⓐ Remarks Cross section 160 cm ² 12.13 cm ² 0.076 Weak axis cross section secondary moment (Ig) 853 cm ⁴ 92.3 cm ⁴ 0.11 Weak axis section coefficient (Za) 213 17.8 0.08 Allowable stress (σ) 90 kg / cm ² 1500 kg / cm ² 16.7 Weight per 1m length 15 Kg 9.52Kg 0.63 Years of use 2 years 5 years 2.5 Long-term use

The cross-sectional dimensions (H × B) of the wooden earth plate used here are 200 mm × 80 mm, and the cross-sectional dimensions (H × B × C × t) of the length-controlled earth plate 2 of lightweight C-shaped steel are 200 mm × 75 mm × 25 mm x 3.2 mm. The thickness is 3.2mm, 2.6mm and 2.1mm.

According to the comparison table, the stiffness ratio {length-controlled earth plate / wood earth plate} is {Z _ⓐ / Z _ⓑ × σ _ⓐ / σ _ⓑ } = 17.8 / 213 × 1500/90 = 1.39 times that of C-shaped steel, which is lighter than wood. The earth pressure can be greater, the number of years of use is more than twice as long, and the weight is close to half of the wood for easy handling. Therefore, even considering the weakness of the expansion and contraction of the C- section steel can be subjected to similar earth pressure, high safety, light weight than wood, and long life. In addition, if the width (B) of the lightweight C-shaped steel is made larger than the standard (75mm 90mm), the result is the same as the wood earth plate thickness (120mm).

The earth wall temporary installation method using the length adjustable earth plate 2 of the present invention, which is excellent in rigidity, easy to handle, and easy to install and dismantle, will be described as follows.

First, the conventional earth wall temporary installation method is briefly described, and the first step of installing the earthwork temporary pile 1, the second step of excavation to excavation to a certain depth, the third step of installing the wood earth plate, and again Facing the fourth stage of excavation to excavate to the depth, the fifth stage of pushing up the wooden earth plate to the lower part of the wooden earth plate installed above, and installing the wooden earth plate, and the banding (3) crossing the earthwork temporary pile (1). The sixth step of installing the reinforcing material for installing the brace 4 for the support of the belts 3, the seventh step of repeating the above steps 4 to 6, the eighth step of dismantling the wood soil plate, and the dismantling It consists of the ninth step of filling the soil in the space of the temporary scaffold pile (1) and wood earthen board.

Therefore, the method of the present invention is the third step of installing the wood earth plate in the conventional earth wall temporary installation method, and the fifth step of installing the wood earth plate by pushing the wood earth plate to the bottom of the wood earth plate installed on the upper side, and the wood earth plate In order to efficiently carry out the eighth step of dismantling the length adjustable earth plate 2 of the present invention is used.

That is, the third step of the earth wall temporary installation method of the present invention using the length adjustable earth plate 2 shown in Figure 2 as a basic embodiment is as follows.

Loosen the bolts 12 to free the length adjusters 11 on both sides of the length adjustable earth plate 2 so that the length adjustable earth plate 2 can be easily inserted between the spans of the retaining pile 1. Push the sieve 11 into the inside of the earth plate main body 9 to shorten the length of the adjustable earth plate 2, and put the length adjustable earth plate 2 horizontally between the retaining piles 1, and length The length adjusters 11 on both sides of the adjustable earth plate 2 are pulled out so as to contact the retaining pile 1, and the length adjuster 11 is tightened by tightening the bolts 12 so that the earth plate body of the length adjustable earth plate 2 is fixed. To (9).

Therefore, the retaining pile 1 cannot be precisely vertically pinned due to its length and the ground condition, and the span between adjacent retaining piles 1 is not constant according to the depth, and in the conventional case, the length of wood is adjusted. The earthenware type plate (2) was cut by the saw according to the span of the depth according to the depth, and laid down horizontally after being inserted obliquely between the spans, but the present invention uses a length-adjustable earthenware plate (2) is adjustable in length so The problem is solved.

After the third step, the excavation is carried out to a predetermined depth, and the fifth step of installing while pushing up the length adjustable earth plate 2 to the lower portion of the length adjustable earth plate 2 installed at the upper side in the third step is also performed. Same as the installation in step 3. That is, the fifth step of the conventional step is to measure the span of the retaining piles 1, as in the conventional wood step plate installation in the third step, and after cutting the wooden earth plate, put them diagonally between the spans, and then horizontally Pushed up and laminated to the bottom of the wood earthenware plate installed in step 3, but the 5th step of the present invention is installed the length adjustable earth plate 2 in the same way as the third step of the present invention, the excavated earth wall completely without empty space Length adjustable earth plate (2) can be installed.

Therefore, conventionally, the wood earthen boards cut in order to put the wood earthen boards in between the slant were not able to install the wood earthen board in a certain space, but the length-adjustable earthen board 2 of the present invention does not need to be laid obliquely. The length of the adjustable earth plate 2 is adjusted using the length adjusters 11, 11 ', 11' 'and 11' '', so that the length can be shortened and inserted between the spans. This eliminates the need for a space above the width of the adjustable earth plate 2.

In addition, the eighth step of the present invention for dismantling the length-adjustable earth plate 2 will be described below.

First of all, it is difficult to secure the space for earth pressure and dismantlement. Therefore, it is almost impossible to dismantle the wood earthen board and it is difficult to recycle due to the uneven specifications, so it is usually dismantled and collected. Due to this, there is concern about settlement of the ground due to corrosion of the wooden wood plate. However, the length-controlled earth plate 2 of the present invention has a structure that is easy to dismantle and can be said to be very economical and efficient because it is reused after dismantling.

That is, the dismantling of the length-adjustable earth plate 2 of the present invention loosens the bolt 12 to free the length adjusting body 11 (11 ''), or pulls out the pin 13 to remove the length adjusting body 11 '. After freeing or pulling the nail 15 to free the length adjusting body 11 '' ', the length adjusting body 11, 11', 11 '', 11 '' 'is replaced with the earth plate main body 9. By moving the inner side of the length-adjustable earth plate 2 and pulling it out in a horizontal state, the earthenware is dismantled between the spans of the temporary pile 1.

As described above, the installation and dismantling of the length-adjustable earth plate 2 as the third, fifth and eighth stages of the present invention is free and recyclable, and the ground collapse due to the burial of the conventional earth plate. It can be used in various ways such as construction of safety barriers to prevent ground mudslides and landslides as well as construction of underground structures and construction of safety barriers to prevent outflow of soil around roads.

Thus, the present invention is easy to install and dismantle the length-adjustable soil plate (2), because the length is adjusted slidingly even between the depth-specific span of the earthwork temporary pile (1) difficult to be installed vertically, It has the effect of shortening and material saving, and the effect of preventing the ground collapse caused by the wooden earth plate, which has been previously dismantled due to the complete dismantlement collection, has the effect of supporting the earth pressure efficiently due to its superior strength compared to the conventional wooden earth plate. It is a material that is recycled to scrap metal and recycled products even after years of use, so it has an environmentally-friendly effect of preventing environmental pollution by saving resources and disposal.

Claims (7)

delete In the length-adjustable earth plate 2 whose length is adjusted, a fixed width fixing member 8 having a nut 7 attached to both openings of the earth plate main body 9 is provided, and a bolt is attached to the nut 7. (12) is fastened, the bolt (12) fastened to the nut (7) is fixed to the length adjuster (11) inserted between the earth plate body 9 and the fixing member (8) Length adjustable earth plate. In the length-adjustable earth plate 2 whose length is adjusted, a fixed width fixing member 8 'having a pinhole 14 is provided in both openings of the earth plate main body 9, and the earth plate main body 9 The pinholes 14 are formed in a row in the length adjuster 11 'inserted into both openings, and the pinholes 14 of the fixing member 8' and the pinholes 14 of the length adjuster 11 '. Length adjustable earth plate, characterized in that the pin 13 is inserted to fix them. In the length-adjustable earth plate 2 whose length is adjusted, a constant width reinforcement plate 6 '' having insertion holes 16 formed in both openings of the earth plate main body 9 is provided, and the earth plate main body 9 and Length adjustable earth plate, characterized in that the nail (15) is inserted into the insertion hole 16 is fixed to the length adjuster (11 '' ') of the wood inserted between the reinforcement plate (6' '). delete delete delete