KR20100092847A - Construction method of basement wall using the precast concrete member - Google Patents

Abstract

PURPOSE: A construction method of a basement wall using a precast concrete member is provided to improve construction performance by appropriately using a PC member. CONSTITUTION: A construction method of a basement wall using a precast concrete member is as follows. A retaining wall(100) is formed. Inner columns are formed inside the retaining wall. The inner ground of the retaining wall is excavated. A mounting bracket is installed in the retaining wall. PC members(200) are placed on the mounting bracket are continuously installed along the retaining wall. A support(300) connects the retaining wall and the inner columns. Vertical reinforcing bars(410) are arranged through a vertical connecting key(210) of the PC members. A basement wall is formed by integrally placing wall concrete(420) in the PC members.

Description

Construction method of basement wall using the precast concrete member}

The present invention relates to a method for constructing an underground exterior wall in which a part of the underground exterior wall is constructed in the underground construction of a building. More specifically, the factory-made PC member is initially used as a earth pressure carrier for supporting a retaining wall. The present invention relates to a method for constructing an underground exterior wall to secure a certain construction quality, economic feasibility and constructability by being part of the underground exterior wall.

In general, the basement outer wall of a building is constructed with an earthquake wall, excavated inside the earthen wall, and then installed a temporary support (horizontal brace, etc.) to support the earth pressure. Work together or independently from the top down or from the bottom up (hereinafter referred to as 'the temporary support method'), or construct the wall and excavate the inside of the wall, then construct the interlayer structure (beam or slab) in the basement of the building. Top down with the interlayer structure (beam or slab) in the basement of the building, independent of the interlayer structure (beam or slab) in the basement of the building, with the interlayer structure (beam or slab) being a permanent support that directly supports the earth pressure. Construction from the bottom up (hereinafter referred to as 'permanent support method'). In particular, the permanent support method is a reverse drilling method because the interlayer structure (beam or slab), which is part of the basement of the building, is supported by the top-down construction while supporting the retaining wall. According to the structural type of), it can be divided into steel reverse drilling method (also called SPS method) by steel structure, RC reverse drilling method by reinforced concrete structure, and synthetic reverse drilling method by composite member (PC, PC + steel, RC + steel, etc.).

Temporary support method is usually installed along the steel frame length before the construction of the temporary support, so that the earth pressure can be stably supported. Since the steel frame length is a temporary member that needs to be removed during the construction of the basement wall, the construction and economical efficiency are generally low. It becomes a floating element. In addition, the permanent support method is to support the earth pressure stably by constructing the rim beam together in the process of constructing the interlayer structure (beam or slab) of the basement of the building, and the rim beam is complicated work such as formwork and reinforcement work It is a factor that degrades overall construction and economic feasibility.

The present invention was developed to improve the problems related to the construction and economical efficiency in the above-described conventional underground exterior wall construction method, by minimizing the construction work by appropriately using the factory-produced PC members, as well as to improve the construction performance of a certain construction quality and There is a technical problem in providing an underground exterior wall construction method that can secure economic feasibility.

In addition, the present invention has a technical problem to provide a method for the construction of the basement outer wall that can be flexibly applied to both the temporary support method and the permanent support method.

Furthermore, the present invention has a technical problem to provide a method for constructing an underground exterior wall that can improve the integrity of the PC portion and the site construction RC portion even when the PC of a part of the underground exterior wall.

In order to solve the above technical problem, the present invention provides a method for constructing an underground exterior wall in which a part of an underground exterior wall is constructed in a basement construction of a building, the method comprising: (a) constructing an earth wall and constructing an inner column into the earth wall; (b) excavating the inner ground of the retaining wall; (c) installing a mounting bracket on the wall; (d) preparing a PC member having upper and lower connecting keys on the upper and lower surfaces of the longitudinal direction and having a side connecting key on one side of the longitudinal direction, and mounting the PC member on the mounting bracket along the earth wall. Installing continuously but installing the other side in the longitudinal direction of the PC member facing the earth wall; (e) constructing the support for connecting the retaining wall and the inner pillar while constraining the side connection key of the PC member, thereby constructing the support for supporting the retaining wall with the PC member; And (f) constructing the basement outer wall to be integrated with the PC member while placing the wall concrete after placing the vertical wall reinforcement through the vertical connecting keys of the PC member. Provides a method of constructing a subterranean exterior wall.

According to the present invention, the following effects can be expected.

First, in constructing the underground part of the building, a part of the basement outer wall is made into a PC and installed as a earth pressure carrier to support the retaining wall. Therefore, the construction of the support for supporting the retaining wall can be omitted or minimized. As a result, overall construction and economics can be improved.

Second, since part of the underground wall is made into PC and used as earth pressure carrier, structural stability and construction quality, which are the advantages of the PC member produced in the support construction process for supporting the retaining wall, can be secured. It can be flexibly applied to both and permanent support methods.

Third, if the PC member is properly used, it can be installed while improving the integrity of the basement outer wall in a bottom-up or top-down manner while constructing the underground part of the building by a reverse boring method using a permanent support.

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

Figures 1 and 2 show the construction sequence for the construction method for the underground exterior wall according to the present invention, Figures 3a to 3c shows a PC member that can be preferably used in the construction method for the underground exterior wall according to the present invention, Figure 4 9 to 9 show the construction details for each step in the construction method of the basement outer wall according to the present invention.

According to the present invention, the method for constructing the outer wall of the basement includes the upper and lower connecting keys 210 on the upper and lower surfaces in the longitudinal direction, and the side connecting keys 220 on the one side in the longitudinal direction. The fabricated PC member 200 is used as a earth pressure carrier in connection with a temporary support 310 or a permanent support (beam or slab, 320, 330 as an interlayer structure of the building basement part) in the process of supporting the retaining wall 100 in oyster soil. In addition, in the construction process of the basement outer wall 400, there is a technical feature to be integrated with the site construction RC portion of the wall vertical reinforcement 410 and the wall concrete 420 to be configured as a part of the basement outer wall 400. Hereinafter, a technical configuration in which the above technical features are implemented will be described step by step with reference to FIGS. 1 to 9.

Step (a): construction of the retaining wall and the inner pillar-see Fig. 1 (a), 2 (a)

Construct the earth wall 100 according to the construction line. The barrier wall 100 may be constructed as an H continuous pile, earth plate, CIP, SCW, sheet pile, etc., as well as underground continuous wall (slurry wall).

After constructing the retaining wall 100, the inner pillar 110 is constructed into the retaining wall 100. If the present invention is carried out while applying the temporary support method in this step the inner pillar 110 is a permanent column constituting the structure of the temporary pillar or the basement of the building, and in this step if the present invention is carried out while applying the permanent support method The inner pillar 110 becomes a permanent column constituting the structure of the basement of the building.

(b) step: gulto-see Fig. 1 (b), 2 (b)

It excavates the ground inside the retaining wall 100. The pit depth is carried out while considering the stable support state of the retaining wall (100).

Step (c): Bracket Installation-Refer to Figures 1 (c) and 2 (c)

It is attached to the earth wall 100 to install the mounting bracket (120). However, the mounting bracket 120 is to determine the appropriate size to sufficiently withstand the load of the support member 300 and the PC member 200 is installed in step (d) to be described later (e).

Step (d): PC member installation-see Fig. 1 (d), 2 (d), 3a, 3b, 3c, 4

While mounting the PC member 200 on the mounting bracket 120 is installed continuously along the earth wall (100). PC member 200 should be made to be provided with a side connection key 220 on one side of the longitudinal direction at the same time having a vertical connection key 210 on the upper and lower surfaces in the longitudinal direction. In addition, since the PC member 200 should serve as a earth pressure carrier that delivers earth pressure from the retaining wall 100 to the support 300, it should be manufactured to exhibit sufficient strength as a stable earth pressure carrier, but its size (thickness and width). Deflection width) can be manufactured in various ways depending on the site situation or structural design.

This step is made in such a way that the other side of the PC member 200 as described above (the opposite side of the side on which the side connection key is provided) is installed facing the retaining wall 100. As a result, the PC member ( 200 is a form extruded from the retaining wall 100 in a state in which the side connection key 220 is exposed. If the present invention is carried out while applying the permanent support method in this step, the PC member 200 as permanent support (320, 330) should be installed in accordance with the construction position of the interlayer structure (beam or slab) in the basement of the building, the temporary support If the method is implemented while applying the method, the installation position of the PC member 200 may only consider the installation position of the temporary support 310 regardless of the construction position of the interlayer structure (beam or slab) in the basement of the building.

The PC member 200 used in this step is manufactured to have a side connection key 220 on one side of the longitudinal direction at the same time having a vertical connection key 210 on the upper and lower surfaces in the longitudinal direction, the vertical connection The key 210 is configured to continuously reinforce the vertical wall reinforcement 410 for the integrity of the basement outer wall 400, the side connection key 220 is to bind the support 300 to the PC member 200 It is for the configuration. The present invention proposes the shape of the vertical protrusion purchase reinforcing bar 211, the vertical through-opening opening 212 and the coupler exposure buying rebar as the vertical connection key 210 through Figure 3a to 3c and end plate with the side connection key 220 221, horizontal protruding buried rebar 222 and coupler exposed buried reinforcing bar 223 are proposed, these up and down connection key 210 and side connection key 220 can be configured in various combinations,

3A shows that the vertical connecting key 210 is provided as a vertical protruding reinforcing bar 211 while the side connecting key 220 is provided as an end plate 221. The vertical connection key 210 shows the PC member 200 provided with the vertical protruding media reinforcing bar 211 of the abdominal muscle so as to be continuously placed. The vertical protrusion embedded reinforcing bar 211 as the vertical connection key 210 is provided as the reinforcing bar is embedded in the PC member 200 so as to project vertically vertically, and the end plate 221 as the side connection key 220 is a plate thereof. It is provided as the plate surface is embedded in the PC member 200 to expose. Although not illustrated, the PC member 200 may be provided so that an opening for inserting a concrete pouring pipe or discharging air may be separately formed in consideration of placing the wall concrete 420.

3B shows that the vertical connecting key 210 is provided as a vertical through opening 212, while the side connecting key 220 is provided as a coupler-exposed reinforcing bar 223. The upper and lower connection keys 210 show the PC member 200 provided with two rows of vertical through-openings 212 to accommodate the continuous reinforcement. Such PC member 200 is advantageous in that it has a light weight by the vertical through opening 212. The vertical through opening 212 as the vertical connection key 210 is provided as the PC member 200 is vertically penetrated through the vertical opening, the coupler exposure embedded reinforcing bar 223 as the side connection key 220 is a rebar at the end of the reinforcing bar The drinking coupler is provided and is provided as the rebar is embedded in the PC member 200 so that the inlet of the coupler is exposed. In particular, the vertical through opening 212 as the vertical connection key may be formed in various sizes and shapes, as well as in various arrangements (two rows as well as one column).

3c shows that the vertical connecting key 210 is provided as a vertical through opening 212 while the side connecting key 220 is provided as a horizontal protruding recessed reinforcing bar 222, and the vertical vertical reinforcing bar 410 is reinforced with abs. The upper and lower connection keys 210 show a PC member 200 provided with vertical rows of openings 212 in one row so as to accommodate only one. Since the PC member 200 can be manufactured with a considerably short width, it can be said to be more advantageous in weight reduction than the PC member of FIG. 3B. The horizontal protruding embedded rebar 222 as the side connection key 220 is provided as the reinforcing bar is embedded in the PC member 200 to protrude horizontally.

In addition, in this step, as shown in FIGS. 3A, 3B, and 3C, the PC member 200 may further include a concave groove 224, a side unevenness 241, and a double ring 251. The concave groove 224 complements the side connection key 220 so as to reinforce the integration of the PC member 200 and the permanent support (concrete of the beam and slab, 320, 330) in one longitudinal direction of the PC member 200. The concave groove 224 may be replaced with a rugged non-planar surface due to convex protrusions or wire mesh finishes. Side concave-convex 241 is a configuration provided as both sides of the width direction of the PC member 200 is treated with protrusions and grooves in consideration of the continuous installation of the PC member 200 to a certain length, the side concave-convex 241 is a constant When the PC members 200 of the length 200 are installed in the width direction so as to be continuous to each other in the longitudinal direction to form an opening (protrusions are formed between the grooves are formed by the side irregularities when the grooves are opposed to each other grooves) or fit each other It serves to make a connection (custom connection of the projection and groove), in particular, the opening formed by the buttocks of the side concave-convex (241) is an up and down connection key 210, the vertical opening opening 212 or the opening for concrete pouring or air discharge Can be used as 3A and 3B, it can be seen that the longitudinal reinforcing bars 242 embedded in the longitudinal direction of the PC members 200 can be connected to each other by a coupler or the like. Both ring 251 is provided on the longitudinal upper surface of the PC member 200 to enable the lifting of the PC member 200.

On the other hand, this step will proceed differently depending on the PC member 200 is adopted. PC member 200 as shown in Figures 3a and 3b corresponds to the thickness of the basement outer wall 400 to be constructed because the vertical connection key 210 is provided to be able to continuously all of the vertical wall reinforcement 410 that is abs abs Since it will have a width, such a PC member 200 is to be installed close to the retaining wall (100). However, since the barrier wall 100 is generally treated with an uneven surface, it may be difficult to install the PC member 200 in close contact with the barrier wall 100. In the present invention, FIG. 4 (a) (b) It is proposed to construct the backfill material 130 by grouting between the PC member 200 and the retaining wall 100 for the integration of the PC member 200 and the retaining wall 100 as in. In consideration of the construction of the back filling material 130 through the grouting, and preparing the PC member 200 to be formed so that the lower projection jaw 231 is formed on the other side in the longitudinal direction (the opposite side of the side provided with the side connection key), Furthermore, as shown in FIG. 4 (a), the stud 140 is bonded to the earth wall 100 on the lower protrusion jaw 231, or the PC protrusion 200 is attached to the lower protrusion jaw 231 as shown in FIG. 4 (b). It is preferable to prepare the production so that the horizontal protrusion embedded reinforcing bar 232 is further provided, which allows the stud 140 to the horizontal protrusion embedded reinforcing bar 232 to be embedded in the back-filling material 130 by grouting. This is to reinforce the integration of the retaining wall 100 with. In addition, since the PC member 200 as shown in FIGS. 3A and 3B is installed close to the retaining wall 100, a construction joint may be formed by the PC member 100 after completing the basement outer wall 400. , Considering this, the PC member 200 is prepared to be formed so that the longitudinal groove 251 is formed in the longitudinal upper surface or the lower surface and to install the water-expandable index 250 in the longitudinal groove 251 of the PC member. do.

PC member 200 as shown in Figure 3c has a width smaller than the thickness of the basement outer wall 400 to be installed because the vertical connection key 210 is provided so that only one of the vertical wall reinforcement 410 that is abs abs Therefore, the PC member 200 will be spaced apart from the retaining wall 100 while leaving a space for reinforcing the other one of the wall vertical rebars 410 that are abs abs. As described above, since the PC member 200 is spaced apart from the retaining wall 100, when using the PC member 200 as shown in FIG. 3C, the back filling material 130 must be formed between the PC member 200 and the retaining wall 100. Should be installed. So that it can be continuously connected to the back-filling material 130 and the PC member 200 in the retaining wall 100 can stably support the retaining wall 100. In installing the PC member 200 as shown in FIG. 3C, the construction of the back filling material 130 is provided with a formwork 131 connecting the earth wall 100 and the PC member 200 as shown in FIG. 5 (a). After filling the mold 131 with a wet material such as mortar, concrete, or the like, or as shown in Fig. 5 (b) (c) to the other side of the longitudinal wall (side connection key is provided on the opposite side of the earth wall Adopting the PC member 200 is installed to expose the joining hardware 233 on the facing surface) connecting the connecting steel 132 to the retaining wall (100, exposed H-shaped steel flange) and PC member 200, exposed bonding Hardware), or the length-adjustable backfill material assembly 133 consisting of a male thread piece 133a and a female thread piece 133b as shown in FIG. 5 (d). After placing between the members 200 to adjust the fastening position of the assembly 133 to install the crimping wall 100 and the PC member 200 to compress. Proceed in this way. However, since the space between the wall wall 100 and the PC member 200 on which the backfill material 130 is constructed is also a space in which the wall vertical rebar 410 is reinforced, the wall to allow continuous reinforcement of the wall vertical rebar 410 is possible. Considering the reinforcement plan of the vertical reinforcing bars (410) will have to construct the backfill material (130).

For the construction of the backfill material 130 by the wet material as shown in Figure 5 (a), it is preferable to use the shape deformation formwork 131 as shown in Figure 6 (a), the shape deformation formwork 131 is earthen wall 100 It is a form that can be deformed while flexibly responding to the uneven earth wall 100 in case of being constructed with this uneven surface. Shape-forming die 131 is formed as a pan flute (panflute), as shown in Figure 6 (a), the outer frame (131a); and a plurality of devices to protrude through the outer frame (131a) in close contact with each other in parallel The moving pipe 131b is configured to include, The plurality of moving pipes 131b has a structure in which the protruding length in the outer frame (131a) is freely stretched while being individually pushed and pulled, thereby deforming the shape The formwork 131 can freely deform the shape. Such a shape-forming formwork 131 is installed while flexibly responding to the bumpy surface of the retaining wall 110 by free expansion and contraction of the moving pipe 131b, as shown in FIG. After the ash 130 is completed, it can be removed as in Figure 6 (c).

As shown in FIG. 5 (b) (c), for the construction of the backfill material 130 by the connecting steel 132, the joining hardware 233 is exposed on the other longitudinal side (the opposite side of the side on which the side connecting key is formed). Adopted PC member 200, the joining hardware 233 is installed in the form that the reinforcing bars, plates, angles, channels are embedded in the PC member 200 (see Figs. 3a and 5b). The channel may be installed in the form of being fitted to the PC member 200 (see Fig. 5 (c)). In addition, the joining hardware 233 is installed throughout the entire length of the other side surface of the PC member 200, as well as the longitudinal direction of the PC member 200 to be located only at the construction position of the backfill material 130 by the connecting steel 132. It is also possible to be partially mounted on the other side.

As shown in Figure 5 (d) for the construction of the back-filling material 130 to compress the retaining wall 100 and the PC member 200 at the same time, it is preferable to use the length-adjustable back-filling material assembly 133 as shown in FIG. The length-adjustable backfill material assembly 133 may include: a male thread piece 133a having an extended support plate 133c extended to the male threaded rod end; and an extended support plate 133c extended to the female threaded rod end. A female threaded rod is a female threaded piece 133b to be fastened to the male threaded rod of the male threaded piece 133a; and is configured to further include a handle 133d to facilitate the engagement of the male threaded piece 133a and the female threaded piece 133b. It can be configured to include more. The length-adjustable backfill material assembly 133 is capable of adjusting the length of the male thread piece 133a and the female thread piece 133b, and furthermore, the expansion support plate 133c at both ends through the length adjustment of the earth wall 100 ) And the PC member 200 can be installed while pressing.

Step (e): support construction-see Figs. 1 (e), 2 (e), 4

Restraining the side connection key 220 of the PC member constructs a support 300 for connecting the earth wall 100 and the inner pillar 110. The support 300 may be constructed as a temporary support 310 or a permanent support 320, 330 while being divided according to the support method applied.

If the present invention is carried out while applying the temporary support method, the support 300 is constructed as a temporary support 310, but in this case, the side connection key 220 is an end plate as shown in FIG. It should be performed while adopting the PC member 200 provided with (221). Only then, the temporary support 310 is attached to the end plate 221 of the PC member to be installed and then easily removed in the underground construction process.

On the other hand, if the present invention is carried out while applying the permanent support method, the support 300 is constructed as a permanent support (320, 330), that is, the interlayer structure (beam or slab) of the basement of the building, wherein the permanent support (320, 330) ) Can be any type of steel frame, reinforced concrete, or composite structure. In applying the permanent support method, unlike the case of applying the temporary support method, the PC member 200 is not limited to the configuration of the side connection key 220. In other words, if the PC member 200 is provided with a side connection key 220 in the form of the end plate 221, as shown in Figure 4 (a) of the steel (steel ball to steel) of the permanent support (320, 330) If the PC member 200 is provided with a side connection key 220 in the form of a horizontal protruding buried rebar 222 or a coupler exposed buried rebar 223, the PC member 200 may be attached to the end plate 221 of the PC member. As shown in 4 (b) and (c), the reinforcing bars (horizontal reinforcing beams and slabs as interlayer structures in the basement of the building) of the permanent supports 320 and 330 are horizontal protruding buried rebar 222 or coupler exposed buried rebar 223. After connecting to the construction, the concrete is poured.

The earth pressure support structure by the barrier wall 100, the PC member 200, and the support 300 is completed by the progress of this step, and thus the PC member 200 is the earth pressure from the barrier wall 100 to the support 300. It serves as a earth pressure carrier to deliver the support wall 300 together with the support 300.

Step (f): Underground wall construction-see Fig. 1 (f1) (f2), 2 (f), 8, 9

After reinforcing the wall vertical reinforcing bar 410 through the vertical connection key 210 of the PC member, while laying the concrete wall 420, the underground outer wall 400 is constructed to be integrated with the PC member 200. Construction of the basement outer wall 400 proceeds from top to bottom or bottom-up according to the supporting method applied, it is also possible to proceed in a mixed manner by combining the top-down and bottom-up as appropriate. In addition, the construction of the basement outer wall 400 proceeds while appropriately corresponding to the PC member 200 adopted in step (d).

If the present invention is carried out while applying the hypothesis supporting method, this step can be carried out from the bottom up in parallel with the construction of the interlayer structure (beam, slab) of the basement of the building as shown in Figure 1 (f1), but only in this case The temporary support 310 of the location is removed so that the underground interlayer structure of the building constructed in parallel becomes a permanent support. Of course, as shown in FIG. 1 (f2), the basement outer wall 400 may be constructed in a bottom-up or top-down manner apart from the construction of the inter-floor interlayer structure (beam, slab) of the building, in particular, the basement outer wall 400 in a top-down manner. If the construction step (d) adopts the PC member 200 as shown in Figure 3a, the upper and lower connection key 210 is provided with a vertical protruding reinforcing bar 211 is preferably constructed as in Figure 9 (a) The basement interlayer structure (beam, slab) of the building may be constructed in a bottom-up manner after the construction of the basement outer wall 400, but in this way, the basement exterior wall 400 is separated from the basement interlayer structure (beam, slab) of the building. In the case of construction, the temporary support 310 is to be maintained or removed while considering the construction situation of the underground structure interlayer structure (beam, slab) of the building.

If the present invention is carried out while applying the permanent support method, this step may proceed from the top to bottom. When the permanent support method is applied, the top-down construction of the basement outer wall 400 is a method of constructing one construction cycle together with the steps (b) to (e) and repeatedly performing the construction to the lowest floor of the basement part of the building. However, in this case, the step (d) is preferably carried out by adopting the PC member 200 as shown in FIG. 3A provided with the vertical connection key 210 as the vertical protruding reinforcing bar 211, so that FIG. 9 (a) In the state in which the PC member 200 is installed as in the wall concrete 420 can be poured only onto the PC member 200. When the permanent support method is applied, the bottom-up construction of the basement outer wall 400 is performed only after the steps (b) to (e) are repeated to the lowest floor of the basement part of the building as shown in FIG. 1 (f). It is a way of constructing from the bottom up. In this case, however, the step (d) may be performed by the same PC member 200 or the vertical connecting key of FIG. 3B and FIG. 3C having the vertical connecting key 210 provided as the vertical through opening 212 to the vertical protruding reinforcing bar 211. Even if it is provided, it is preferable to adopt a PC member formed with a separate opening (concrete pouring opening), so that the PC member 200 in the state where the PC member 200 is installed as shown in Fig. 9 (b) (c) While passing the wall concrete 420 can be poured smoothly. When the permanent support method is applied as described above, the top-down and bottom-up construction of the basement outer wall 400 is integrated with the basement outer wall 400 and the basement structure (pillar, beam, slab) of the building during the construction of the basement outer wall 400. .

On the other hand, this step has a slight difference in the wall vertical reinforcement according to the PC member 200 adopted in step (d). If the up and down connecting key 210 adopts the PC member 200 provided with the vertical protruding reinforcing bar 211 of the abdominal muscle as shown in Figure 3a, this step is performed as shown in Figure 8 (a) The wall vertical reinforcing bar 410 is connected to each of the vertical protruding reinforcing bars 211 of the abs of the member, and the wall concrete 420 is poured as shown in FIG. 9 (a). If the upper and lower connection key 210 adopts a PC member 200 provided with a vertical through opening 212 that can accommodate all the vertical wall reinforcement 410 of the abs, as shown in Figure 3b, the present invention, The step is performed by placing the wall vertical reinforcement 410 abs through the vertical through opening 212 of the PC member as shown in Figure 8 (b) and then pouring the wall concrete 420 as shown in Figure 9 (b) . If the upper and lower connection key 210 adopts a PC member 200 provided with a vertical through opening 212 that can accommodate only one wall vertical rebar 410 as shown in FIG. As shown in FIG. 8 (c), the wall vertical rebar 410 is reinforced through the vertical through opening 212 of the PC member, and the wall vertical rebar 410 is disposed between the wall wall 100 and the PC member 200. After the abdominal muscles of the vertical wall reinforcement 410 by the reinforcement proceeds while placing the wall concrete 420 as shown in Figure 9 (c).

As the progress of this step, the basement outer wall 400 is completed, the PC member 200 becomes part of the basement outer wall 400 is integrated with the site construction RC portion of the basement outer wall 400.

The present invention has been described in detail above with reference to specific embodiments, but the embodiments are only for illustrating the present invention, and thus the embodiments substituted, added, and modified within the scope without departing from the spirit of the present invention are also described below. It will be said to belong to the protection scope of the present invention as defined by the claims appended hereto.

Figure 1 shows a process of applying the hypothesis support method 'construction of the underground outer wall construction of a part PC in accordance with the present invention.

Figure 2 shows a process of applying a permanent support method to the 'underground outer wall construction method of a part PC in accordance with the present invention.

3A to 3C show various PC members which can be preferably used in the method for constructing the outer wall of the underground according to the present invention.

Figure 4 shows the PC member installation step and the support construction step in the underground outer wall construction method according to the present invention.

Figure 5 shows the backfill construction details in the PC member installation step of Figure 4 (c).

FIG. 6 shows the formwork and its use details which can be preferably used in the backfill construction of FIG. 5 (a).

FIG. 7 shows the adjustable backfill assembly that may be preferably used in the backfill construction of FIG. 5 (c).

8 illustrates a wall vertical reinforcement step in the method for constructing an exterior exterior wall according to the present invention.

Figure 9 shows the wall concrete pouring step in the method for constructing the outer exterior wall according to the present invention.

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

100: retaining wall

110: inner pillar

120: mounting bracket

130: backfill

200: PC member

210: up-down link key

211: vertical protruding rebar

212: vertical through opening

220: side connection key

221: end plate

222, 232: horizontal protruding rebar

223: coupler exposure purchase rebar

300: support

310: temporary support

320: permanent support (beam)

330: permanent support (slab)

400: outer wall

410: wall vertical rebar

420: concrete wall

Claims (14)

As the underground outer wall construction method of a part of the underground outer wall 400 in the construction of the underground part of the building, (a) constructing the mud wall 100 and constructing the inner pillar 110 into the mud wall 100; (b) excavating the inner ground of the mud wall 100; (c) installing the mounting bracket 120 on the earth wall (100); (d) preparing the PC member 200 manufactured to have the vertical connection key 210 on the upper and lower surfaces of the longitudinal direction and the side connection key 220 on one side of the longitudinal direction, and the PC member ( Step 200 is installed on the mounting bracket 120 while being continuously installed along the retaining wall 100, the other side in the longitudinal direction of the PC member 200 is installed facing the retaining wall 100; (e) The PC member 200 and the support 300 are constructed by constructing a support 300 connecting the retaining wall 100 and the inner pillar 110 while constraining the side connection key 220 of the PC member. Constructing to support the retaining wall 100; And, (f) constructing the basement outer wall 400 so as to be integrated with the PC member 200 while placing the wall concrete 420 after reinforcing the wall vertical reinforcement 410 through the vertical connection key 210 of the PC member. step; PC underground construction method of a portion of the portion comprising a. In claim 1, In the step (d), the PC member is installed to be spaced apart from the barrier wall 100, and the barrier wall 100 and the PC member 200 are connected between the barrier wall 100 and the PC member 200. It is made while constructing the backfill material 130, The step (f) reinforces the wall vertical rebar 410 between the retaining wall 100 and the PC member 200 and reinforces the wall vertical rebar 410 through the vertical connection key 210 of the PC member. By the wall vertical reinforcing bar 410 abs absent by placing a concrete wall 420, a part of the underground outer wall construction method of the PC. In claim 2, In step (d), After installing the formwork 131 connecting the earth wall 100 and the PC member 200 is made while constructing the back-filling material 130 by filling the formwork 131 with a wet material, The PC member 200 is equipped with the joining hardware 233 exposed on the other side in the longitudinal direction, while the connecting steel 132 is joined to the retaining wall 100 and the PC member 200 at the same time. Is made while constructing the ashes 130, An assembly 133 consisting of a male screw piece 133a having an extended support plate 133c extended at the male threaded rod end; and a female screw piece 133b having an extended support plate 133c extended at the female threaded rod end. After positioning between the retaining wall 100 and the PC member 200, by adjusting the fastening position of the assembly 133, the expansion support plate 133c of the male screw piece and the female screw piece to the retaining wall 100 and the PC member 200. The underground outer wall construction method of the PC portion, characterized in that the construction is made while constructing the back-filling material 130 in a pressing manner. In claim 1, The step (f) is a PC-based underground exterior wall construction method, characterized in that the wall concrete 420 is placed after placing the abs vertically reinforced wall 410 through the vertical connection key 210 of the PC member . In claim 4, The step (d) is performed while constructing the back-filling material 130 by adopting the PC member 200 having the lower projection jaw 231 formed on the other side in the longitudinal direction and grouting the lower projection jaw 231 of the PC member. Underground wall construction method using a part of the PC. In claim 4, In the step (d), the PC member 200 having the longitudinal grooves 251 formed in the longitudinal upper surface or the lower surface is adopted to install the water-expandable index member 250 in the longitudinal grooves 251. Underground wall construction method in which the PC part is characterized in that the made. In any one of claims 1 to 6, The step (d) is made while the vertical connection key 210 adopts a PC member 200 provided with a vertical protruding embedded reinforcing bar 211 or a coupler exposed embedded reinforcing bar, Wherein the step (f) is the construction of a PC-based underground exterior wall, characterized in that the wall vertical reinforcement (410) is connected to the vertical protrusion embedded reinforcement (211) or coupler exposed embedded reinforcement of the PC member. In any one of claims 1 to 6, The step (d) is made while adopting the PC member 200 is provided with a vertical connection opening 210, the vertical connection opening 212, Wherein the step (f) is a wall of the reinforcing bar reinforcement 410, the underground outer wall construction method of the PC part, characterized in that the reinforcement to pass through the vertical through the opening 212 of the PC member. In any one of claims 1 to 6, The step (d) is made while the side connection key 220 adopts the PC member 200 provided with the end plate 221, In the step (e), the support 300 is designed as a temporary support 310 or a permanent support 320 or 330, and the support 300 is bonded to the end plate 221 of the PC member. Underground wall construction method using part of PC. In any one of claims 1 to 6, The step (d) is made while the side connection key 220 adopts the PC member 200 provided with a horizontal protruding reinforcement reinforcing bar 222 or a coupler exposure reinforcing bar 223, The step (e) is to plan the support 300 as a permanent support (320, 330) so that the horizontal reinforcement of the permanent support (320, 330) of the horizontal projection embedded reinforcement 222 or coupler exposure embedded reinforcement ( 223) and underground reinforcing wall construction method of the PC portion, characterized in that the connection is made in addition to placing concrete. In claim 10, Wherein step (d) is a PC-based underground exterior wall construction method, characterized in that the longitudinal one side is made while adopting a PC member (200) made to be treated as an uneven flat surface. In any one of claims 1 to 6, The step (d) adopts the PC member 200, which is made to be treated with the side surface irregularities 241 by the grooves and the projections in both width directions, so that the PC members 200 are continuously in the width direction in the longitudinal direction. A method of constructing a basement outer wall using a part of a PC characterized in that it is installed while facing each other. From the basement wall construction to the formwork for backfill, Outer frame 131a; And, And a plurality of moving pipes (131b) are arranged to protrude through the outer frame (131a) in close contact with each other in parallel; The plurality of moving pipes (131b) is a shape-forming die, characterized in that the protruding length in the outer frame (131a) is stretched while being individually pushed and pulled. As a backfill material used for the construction of underground walls, A male thread piece 133a having an extended support plate 133c wider at the male threaded rod end; And, Widely extended support plate 133c is provided at the end of the female threaded rod, the female threaded rod is a female threaded piece (133b) to be engaged with the male threaded rod of the male threaded piece (133a); adjustable length backfill Reassembly.

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