Box-shaped PC wall partition and joint construction structure using tension material and filler

Abstract

The construction structure for the division and joining of a box-type PC wall according to the present invention comprises: a stairwell constructed by stacking multiple PC members, each of which is integrally formed and horizontally divided, on-site; and an anteroom constructed by stacking multiple PC members, each of which is integrally formed and horizontally divided, on-site, and joined to one side of the stairwell, wherein the joint between the stairwell and the anteroom is integrally joined by a steel member inserted and tensioned between the two wall members and a filler material filled between the joint surfaces of the two wall members.

Description

Technology Field

[0001] The present invention relates to a construction structure for the division and joining of a box-type precast concrete (PC) wall using steel and filler, and more specifically, to a construction structure for the division and joining of a box-type PC wall using steel and filler that minimizes division and enables efficient production and assembly by using a box-type integrated PC member such as a stairwell, vestibule, or auxiliary room (elevator room). Background Technology

[0002] Concrete building structures are simply composed of structural members connected by vertical and horizontal members such as columns, beams, and slabs, and are constructed through an appropriate combination of reinforcement and concrete. Most of these structures are designed to sufficiently withstand their own weight and applied loads.

[0003] However, for large-scale structures subjected to significant lateral forces due to typhoons or earthquakes, a column-and-beam framed structure alone may lack sufficient rigidity, leading to excessive deformation that can cause unexpected damage from the failure of non-structural components. Alternatively, designing with enlarged cross-sections to reduce deformation can result in reduced usable floor space or an uneconomical structure. Therefore, while the column-and-beam framed structure bears most vertical loads, walls are installed to withstand large lateral forces; these are referred to as shear walls. The area or structure where vertical user circulation (stairwells) and plumbing are concentrated and effectively arranged with minimal interference with actual use is called the "Core." Generally, it consists of large-scale, monolithic walls in the shape of XY-direction boxes that are effective in bearing lateral forces in any direction.

[0004] In addition, for most buildings of high importance and large scale, the core is configured with a special evacuation staircase structure to ensure safer evacuation of indoor users in the event of an emergency such as a fire. It features a vestibule and ventilation equipment space between stairwells for vertical movement of users, separated by a fire wall. The rectangular box-shaped walls are broadly classified into three types—stairwell box walls, elevator box walls, and vestibule box walls—and are arranged either independently or by sharing some walls.

[0005] These box-shaped walls feature numerous openings, including through-openings for user access and ventilation openings on walls facing the outside air. In elevator boxes, the floor of every floor is vertically penetrated to facilitate vertical elevator movement, while through-openings are formed in the shape of ducts for vertical connections of supply and exhaust ducts in the vestibule box floor. Meanwhile, stairwell boxes are repeatedly configured in somewhat complex structural forms depending on the floor height, consisting of multiple inclined stairs and landing floors to facilitate the vertical movement of pedestrians. Among the three types of box structures, the stairwell box is characterized by floor level differences due to variations in floor finishing materials between the interior and exterior. Furthermore, given that the length of landings and the number and location of inclined stairs vary depending on the floor height of each level, the design and construction of the stairwell box section must prioritize standardization and consistency above all else.

[0006] There are two methods for constructing concrete structures: one is the RC method (or CIP structure, cast-in-place concrete structure), which involves reinforcing the structure at the site, installing formwork and temporary materials, and then pouring the concrete; the other is the PC structure (or precast structure or PC composite structure), which involves dividing the main members, reinforcing and pouring them in a factory according to a connection plan to fabricate (produce) and shape the members, transporting the fabricated members to the site, assembling them, and then pouring the joints or parts of the structure at the site to create a composite.

[0007] In the PC method, the most important aspect is the repetition of a unified shape. If the lifting capacity of the transportation and assembly equipment allows, minimizing divisions and creating a single, lightweight structure is fundamental to ensuring economic efficiency, leading to reduced construction time and a decrease in joint defects. Divided surfaces imply a disconnection between the rebar and concrete, requiring appropriate measures after assembly, such as splicing steel materials like rebar or pouring concrete for composite construction.

[0008] While the application of the PC method is active for columns, beams, and slabs due to the ease of dividing, transporting, installing, and joining members resulting from the shape characteristics of the reinforcement and structural materials, it is true that the application of the PC method to walls is relatively low for core structures. This is because there are many difficulties in ensuring workability, such as the difficulty of dividing and joining members due to the large-scale, three-dimensional monolithic structure (connecting multiple reinforcements arranged vertically and horizontally), disadvantages in load support caused by numerous openings in walls and floors, and narrow on-site casting spaces between PC member dividing joints.

[0009] As a result, the reality is that even if the main structural parts, such as columns, beams, and slabs, are simply constructed using the PC method and the PC work is completed in a short period, the cast-in-place work for the core section, which bears the lateral force stability of the entire structure, cannot keep up, thereby diminishing the advantages of the PC method itself, which is the maximum benefit of saving time.

[0010] In cases where the PC method was applied to the core of a structure, partial PC construction was typically used. Specifically, the walls were constructed first using the RC method with the core in mind, while the landings and stair sections were subsequently constructed using PC. In cases where the PC method was applied to even parts of the walls, the general method involves fabricating the walls by dividing them into flat plates at their respective joints; for the vertical joints, U-shaped cantilevered rebar is horizontally overlapped and vertical reinforcement is installed and bound on-site between them, and the joints are then cast on-site.

[0011] The core of a large-scale reinforced concrete building structure consists of walls arranged integrally in the XY direction, such as stairwells, vestibules, and elevator shafts. When applying the PC method to the core, appropriate vertical or horizontal divisions are inevitable. Due to the nature of the PC method, which involves assembly performed by descending vertically from top to bottom, broken vertical reinforcement, i.e., the horizontal division surfaces of the walls, can be easily joined by mechanical connections such as sleeves or bolts, or by welding. However, broken horizontal reinforcement, i.e., the vertical division surfaces of the walls, mostly rely on joining by casting on-site by using special connection devices such as flexible wire rope systems like Halpen boxes to avoid interference with protruding reinforcement, or by securing a gap equal to the length of the reinforcement overlap splice.

[0012] While productivity improves when the vertical division points of the wall are separated at the XY direction connection points for planar fabrication, significant shear forces are generated along the in-plane division joint surfaces. Conventional technology generally employs the hoop (or U-bar) method, which involves placing shear keys on the vertical division surfaces of both panels, intersecting U-shaped horizontal reinforcing bars or flexible wires, placing vertical reinforcing bars inside, and then pouring concrete into the joint gaps to create the joints. Although this method has the advantage of minimizing gaps so that separate joint pouring barriers are not required, pouring concrete composed of coarse aggregate (gravel), fine aggregate (sand), cement, and water into a confined space leads to serious defects in structural safety, waterproofing, and airtightness due to poor filling. Furthermore, performing pouring operations with large pouring equipment in high, narrow, and poor working spaces is not an easy task. Due to these complex issues regarding quality, safety, and construction, there have been instances where the wall-type PC apartment construction method, which was once popular in Korea, disappeared in an instant.

[0013] To address this, composite PC and RC methods have been applied by mixing and using three aggregates excluding coarse aggregate, or by combining some with on-site casting; however, it is not easy to achieve the ultimate goal of the PC method, which is to resolve issues of increased construction costs and quality and to minimize on-site work.

[0014] In addition, when conducting actual tests on the joint performance of existing construction methods, slip deformation occurs before the horizontally protruding U-bars yield, and as the joint panels spread apart, the poured concrete at the joint fails first, causing significant deformation and failing to properly exert load-bearing capacity. Recently, domestic structural building standards have been strengthened so that the theory of combining the shear force of rebar and the shear force of concrete based on shear friction theory is not recognized and calculations are made based solely on rebar. Consequently, there is a problem in that it is difficult to apply the wall-type PC method to structures where shear forces are concentrated, such as super high-rise wall-type apartment buildings or core walls.

[0015] Recently, there is a member assembly method in which the sections where XY-direction walls intersect are manufactured and constructed as a single unit, and segmented connections are made on the inner side of the flat plate to enhance structural integrity against shear resistance; however, a fundamental solution is difficult to achieve. To solve this, a box-shaped segmented construction method that minimizes member division is the best option, but it has not been widely adopted. This is partly due to issues related to limited transport standards and lifting equipment, but the more significant reason is that it is difficult to ensure the performance of the parts where box-shaped members are connected while maintaining the integrated box shape of the PC members. Furthermore, while the width of the stairwell box within the core structure varies little across all floors, the floor height varies significantly depending on the location—such as the basement, first floor, lower floors, standard floors, upper floors, and top floors—even within the same building. This results in unpredictable changes in the height of the stairwell (i.e., wall height) and the length direction of the inclined stairs (i.e., the number and height of the treads), making it impossible to carry out economically viable construction.

[0016] In other words, conventional PC application technology for cores and stairwells inevitably requires subdividing the components into flat plates that are relatively advantageous for fabrication, even if it increases the number of members and joints; consequently, the joints rely on on-site casting, even if it compromises structural and construction performance. The problem to be solved

[0017] The present invention aims to provide a construction structure for the division and joining of box-type PC walls that minimizes division by using box-type integrated PC members, such as stairwells, vestibules, and auxiliary rooms (elevator rooms), which constitute the core structure of a concrete building structure; particularly, reduces construction time by enabling standard production assembly through the application of floor-wall integrated box-type PC members to the walls where the floor is formed; ensures economic efficiency by utilizing interlocking members that simplify and absorb various changes in floor height; and structurally secures performance at the divided joint surfaces through the filling of high-strength non-shrink mortar, which eliminates the need for cast-in-place concrete, and the introduction of steel tensile force (post-tension). means of solving the problem

[0018] The construction structure for the division and joining of a box-type PC wall according to the present invention for achieving the above objective comprises: a stairwell constructed by stacking multiple PC members, each of which is integrally formed and horizontally divided, on-site; and an anteroom constructed by stacking multiple PC members, each of which is integrally formed and horizontally divided, on-site, and joined to one side of the stairwell, wherein the joint between the stairwell and the anteroom is integrally joined by a steel member inserted and tensioned between the two wall members and a filler material filled between the joint surfaces of the two wall members.

[0019] The above stairwell may include a landing-integrated PC member in which a plurality of wall sections and a landing section are integrally formed, a height-adjustable PC fitting in which a plurality of wall sections are integrally formed, and a PC staircase mounted between a plurality of landing sections.

[0020] The above-mentioned vestibule may include a slab-integrated PC member in which a plurality of wall sections and a slab section are integrally formed, and a plurality of height-adjustable PC fittings in which a plurality of wall sections are integrally formed.

[0021] The horizontal dividing surface of the above-mentioned true-integrated PC member may coincide with the upper surface of the above-mentioned true portion, and the horizontal dividing surface of the above-mentioned slab-integrated PC member may coincide with the upper surface of the above-mentioned slab portion.

[0022] The above-mentioned true integrated PC member and the above-mentioned slab integrated PC member may each include a plurality of through holes through which the upper ends of a plurality of vertical reinforcing bars protruding upward from the upper surface of the height-adjustable PC fitting are embedded in the height-adjustable PC fitting below and pass.

[0023] The above plurality of through holes have inner surfaces formed with corrugations, and after being assembled so that vertical reinforcing bars are inserted into each through hole, a filler made of non-shrink mortar is injected to connect and anchor the vertical reinforcing bars.

[0024] The height-adjustable PC fitting of the above-mentioned stairwell and the height-adjustable PC fitting of the above-mentioned vestibule can be formed in the shape of a hollow rectangular tube.

[0025] The height-adjustable PC fitting of the stairwell and the height-adjustable PC fitting of the vestibule have a plurality of splice sleeves embedded in the lower portion to connect a plurality of vertical reinforcing bars, and the plurality of vertical reinforcing bars can be arranged so that their lower portions are embedded in each height-adjustable PC fitting and their upper portions protrude upward from the upper surface of each height-adjustable PC fitting.

[0026] The joint between the stairwell and the vestibule includes a pair of joint wall sections that the stairwell and the vestibule share by being connected to each other, and the pair of joint wall sections can be vertically divided and manufactured with a symmetrical gap from the center of the wall and joined at the construction site.

[0027] The joint surface of the above pair of joint wall sections may include a plurality of horizontal grooves formed horizontally and arranged vertically, and a pair of vertical grooves formed vertically on both sides of the plurality of horizontal grooves.

[0028] The above pair of vertical grooves may further include a plurality of deep grooves formed deeper than the vertical grooves and arranged vertically spaced apart, and a plurality of steel insertion holes drilled in the vertical grooves to insert steel and arranged vertically spaced apart.

[0029] The joint surface of the above pair of joint wall sections can be integrally joined by a steel member inserted and tensioned into a steel insertion hole formed by drilling in the pair of wall sections connecting to each other, and a filler material filled in a plurality of horizontal grooves and a pair of vertical grooves between the two joint surfaces.

[0030] The above steel insertion hole may have an enlarged portion formed by expanding near the joint surface of the pair of joint wall sections.

[0031] On the outer surfaces of the two wall sections of the stairwell and vestibule that are connected to each other on both sides of the above pair of connecting wall sections, a pair of tensioning holes may be concavely formed, to which both ends of the steel insertion holes communicate.

[0032] Multiple PC members are constructed by stacking multiple wall sections integrally and horizontally dividing them at the site, and further include an annex room connected to the other side of the stairwell or the other side of the vestibule, and the joint between the stairwell and the annex room or the joint between the annex room and the vestibule can be integrally connected by a steel member inserted and tensioned between the two wall sections and a filler material filled between the joint surfaces of the two wall sections. Effects of the invention

[0033] According to the division and joining construction structure of the box-type PC wall of the present invention described above, division is minimized by using box-type integrated PC members, such as stairwells, vestibules, and auxiliary rooms (elevator rooms), which constitute the core structure of a concrete building structure. In particular, for the walls in the parts where the floor is formed, a floor-wall integrated box-type PC member is applied to enable standard production assembly, thereby reducing construction time. Furthermore, economic efficiency is secured by utilizing interlocking members that simplify and absorb various changes in floor height. Additionally, structural performance can be secured at the divided joint surfaces through the filling of high-strength non-shrink mortar, which eliminates the need for cast-in-place concrete, and the introduction of steel tensile force (post-tension). Brief explanation of the drawing

[0034] FIG. 1 is a top view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention. Figure 2 is an enlarged view showing part A in Figure 1. FIG. 3 is a longitudinal cross-sectional view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention. Figure 4 is an enlarged view showing part B in Figure 3. FIG. 5 is a partial perspective view showing the outer surface of the anteroom in the first embodiment. FIG. 6 is a top view showing the anteroom and stairwell in the first embodiment of the present invention. FIG. 7 is a front view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention. FIG. 8 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention. FIG. 9 is a top view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention. FIG. 10 is a longitudinal section view showing the division and joining construction structure of a box-type PC wall according to a second embodiment of the present invention. FIG. 11 is a top view showing the anteroom, stairwell, and auxiliary room in the second embodiment of the present invention. FIG. 12 is a front view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention. FIG. 13 is a perspective view showing the division and joining construction structure of a box-type PC wall according to a second embodiment of the present invention. FIG. 14 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention. FIG. 15 is a top view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention. FIG. 16 is a top view showing an annex, an anteroom, and a stairwell in the third embodiment of the present invention. FIG. 17 is a front view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention. FIG. 18 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention. Specific details for implementing the invention

[0035] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0036] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this invention, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0037] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in the accompanying drawings, identical components are indicated by the same reference numerals whenever possible. Furthermore, detailed descriptions of known functions and configurations that may obscure the essence of the present invention will be omitted. For the same reason, some components in the accompanying drawings may be exaggerated, omitted, or schematically depicted.

[0038] FIG. 1 is a top view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention, FIG. 2 is an enlarged view showing part A in FIG. 1, FIG. 3 is a longitudinal cross-sectional view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention, FIG. 4 is an enlarged view showing part B in FIG. 3, FIG. 5 is a partial perspective view showing the outer surface of the vestibule in the first embodiment, FIG. 6 is a top view showing the vestibule and the stairwell in the first embodiment of the present invention, FIG. 7 is a front view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention, and FIG. 8 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the first embodiment of the present invention.

[0039] As illustrated in FIGS. 1 to 8, the construction structure for dividing and joining a box-shaped PC wall according to the first embodiment of the present invention may be composed of a stairwell (100), an anteroom (200), and a joining portion (500) that joins the wall portions between them.

[0040] The stairwell (100) can be constructed by stacking multiple PC members on-site, which are formed by dividing multiple wall sections into a single unit and horizontally.

[0041] The vestibule (200) is constructed by stacking multiple PC members on-site, in which multiple wall sections are integrally formed and horizontally divided, and can be joined to one side of the stairwell (100).

[0042] The joint (500) can be integrated and joined by a steel member (550) that is inserted and tensioned between the two wall sections of the stairwell (100) and the vestibule (200), and a filler material that is filled between the joint surfaces of the two wall sections.

[0043] The stairwell (100) may include a PC member (110) in which a plurality of wall sections (111) and a landing section (115) are integrally formed, a height-adjustable PC fitting (130) in which a plurality of wall sections are integrally formed, and a PC staircase (150) mounted between the plurality of landing sections (115).

[0044] The integrated PC member (110) and the height-adjustable PC insert (130) are members that constitute one floor or half floor of the stairwell (100). A structure of one floor of the stairwell (100) can be constructed by stacking and combining multiple PC members that are manufactured by horizontally dividing them.

[0045] The integrated PC member (110) may include four wall sections (111) formed integrally to form a rectangular wall, and a landing section (115) formed integrally to form a horizontal floor inside one side of three wall sections (111). The landing section (115) may form a floor landing or an intermediate landing.

[0046] The height-adjustable PC insert (130) may be composed of four wall sections formed integrally to form a rectangular wall. The vertical height of the wall sections of the height-adjustable PC insert (130) may be formed to be relatively larger than the wall section (111) of the integrated PC member (110).

[0047] The PC stairs (150) can be mounted at an angle between the upper part (115) of the stacked upper integrated PC member (110) and the lower part (115) of the lower integrated PC member (110). Depending on their size and angle of inclination, one or more PC stairs (150) may be mounted on one floor of the stairwell (100).

[0048] The vestibule (200) may include a slab-integrated PC member (210) in which a plurality of wall sections (211) and a slab section (215) are formed integrally, and a plurality of height-adjustable PC fittings (230) in which a plurality of wall sections are formed integrally.

[0049] The slab-integrated PC member (210) may include four wall sections (211) formed integrally to form a rectangular wall, and a slab section (215) formed integrally to form a horizontal floor inside the upper side of the four wall sections (211).

[0050] The height-adjustable PC insert (230) may be composed of four wall sections formed integrally to form a rectangular wall. The upper and lower heights of the wall sections of the height-adjustable PC insert (230) may be formed to be relatively larger than the wall sections (211) of the slab-integrated PC member (210).

[0051] The stairwell (100) is constructed such that a true integrated PC member (110) and a height-adjustable PC insert (130) form a single layer, and multiple pairs of true integrated PC members (110) and height-adjustable PC inserts (130) can be stacked to form multiple layers.

[0052] On the other hand, the vestibule (200) may be composed only of a slab-integrated PC member (210) and a height-adjustable PC insert (230) on the top floor, and the floors below it may be composed only of height-adjustable PC inserts (230).

[0053] As shown in FIGS. 3, 7, and 8, it is preferable that the horizontal dividing surface of the true integrated PC member (110) coincides with the upper surface of the true portion (115), and the horizontal dividing surface of the slab integrated PC member (210) coincides with the upper surface of the slab portion (215).

[0054] By being manufactured to be horizontally divided at the upper surface of the slab portion (215) and the upper surface of the slab portion (215), the slab-integrated PC member (110) and the slab-integrated PC member (210) can be easily manufactured, and structural strength and stability can be increased.

[0055] The true integrated PC member (110) and the slab integrated PC member (210) may each include a plurality of through holes (112, 212) through which the upper ends of a plurality of vertical reinforcing bars (131, 231) protruding upward from the upper surface of the height-adjustable PC member (130, 230) pass.

[0056] In the wall portion of the height-adjustable PC insert (130), a plurality of vertical reinforcing bars (131) may be embedded in the vertical direction and arranged at a predetermined interval from each other. The lower end of each vertical reinforcing bar (131) may be embedded so as to be positioned at a predetermined height above the lower surface of the height-adjustable PC insert (130), and the upper end of each vertical reinforcing bar (131) may be positioned so as to protrude at a predetermined height above the upper surface of the height-adjustable PC insert (130).

[0057] A plurality of vertical reinforcing bars (231) may be embedded in the wall portion of the height-adjustable PC insert (230) in the vertical direction and arranged at a predetermined interval from each other. The lower end of each vertical reinforcing bar (231) may be embedded so as to be positioned at a predetermined height above the lower surface of the height-adjustable PC insert (230), and the upper end of each vertical reinforcing bar (231) may be positioned so as to protrude at a predetermined height above the upper surface of the height-adjustable PC insert (230).

[0058] In the wall portion (111) of the integrated PC member (110), a plurality of through holes (112) through which a plurality of vertical reinforcing bars (131) pass can be formed.

[0059] A plurality of through holes (212) through which a plurality of vertical reinforcing bars (231) pass can be formed in the wall portion (211) of the slab-integrated PC member (210).

[0060] A plurality of through holes (112, 212) of the true integrated PC member (110) and the slab integrated PC member (210) are formed with a corrugated inner surface, and after being assembled so that vertical reinforcing bars (131, 231) are inserted into each through hole (112, 212), a filler made of non-shrink mortar is injected so that the vertical reinforcing bars (131, 231) can be connected and anchored.

[0061] Since the through holes (112, 212) are formed in the shape of corrugated pipes, the vertical reinforcing bars (131, 231) can be firmly anchored after the filler is injected and cured. A true integrated PC member (110) and a slab integrated PC member (210) are stacked on a height-adjustable PC fitting (110, 130) so that vertical reinforcing bars (131, 231) are inserted into each through hole (112, 212), and non-shrink mortar can be filled into the through holes (112, 212) into which the vertical reinforcing bars (131, 231) are inserted and cured.

[0062] The height-adjustable PC insert (130) of the stairwell (100) and the height-adjustable PC insert (230) of the vestibule (200) can be formed in the shape of a hollow rectangular tube. Each height-adjustable PC insert (130, 230) can be formed in the shape of a rectangular tube by integrally connecting four flat-plate wall sections. As described above, each height-adjustable PC insert (130, 230) can be manufactured with a plurality of vertical reinforcing bars (131, 231) embedded in the vertical direction.

[0063] As shown in FIGS. 3 and 4, the height-adjustable PC fitting (130) of the stairwell (100) and the height-adjustable PC fitting (230) of the vestibule (200) may have a plurality of splice sleeves (132, 232) embedded inside the lower portion to connect a plurality of vertical reinforcing bars (131, 231).

[0064] Additionally, a plurality of vertical reinforcing bars (131, 231) may be arranged so that their lower portions are embedded in each height-adjustable PC fitting (130, 230) and their upper portions protrude upward from the upper surface of each height-adjustable PC fitting (130, 230).

[0065] The vertical reinforcing bar (131) of the height-adjustable PC fitting (130) can pass through the through hole (112) of the true integrated PC member (110) and protrude upward above the upper surface of the true integrated PC member (110). Thus, the upper end of the vertical reinforcing bar (131) can be inserted into a splice sleeve (132) embedded inside the height-adjustable PC fitting (130) which is mounted on top of the true integrated PC member (110). The upper end of the splice sleeve (132) can be manufactured in a state where the vertical reinforcing bar (131) embedded inside the upper height-adjustable PC fitting (130) is inserted into the splice sleeve (132). After the lower vertical reinforcing bar (131) is inserted into the lower part of the splice sleeve (132), non-shrink mortar is injected into the splice sleeve (132) and cured, thereby allowing the upper and lower vertical reinforcing bars (131) to be joined by the splice sleeve (132).

[0066] As illustrated in FIGS. 1 to 4, the joint (500) of the stairwell (100) and the vestibule (200) includes a pair of joint wall sections (510) that the stairwell (100) and the vestibule (200) share by being connected to each other, and the pair of joint wall sections (510) can be vertically divided and manufactured with a symmetrical gap from the center of the wall and joined at the site.

[0067] The shared wall section where the stairwell (100) and the vestibule (200) are joined may have a thickness that is approximately half that of the other wall section. Thus, a pair of joining wall sections (510) can be formed to have approximately the same thickness as the other wall section by joining them together.

[0068] As illustrated in FIG. 5, the joint surface of a pair of joint wall sections (510) may include a plurality of horizontal grooves (511) formed horizontally and arranged vertically, and a pair of vertical grooves (512) formed vertically on both sides of the plurality of horizontal grooves.

[0069] A plurality of horizontal grooves (511) may be formed in the shape of horizontally elongated rectangular grooves on each joint surface of a pair of joint wall sections (510). The plurality of horizontal grooves (511) may be formed concavely to have a predetermined depth and size and may be arranged vertically at predetermined intervals.

[0070] A pair of vertical grooves (512) may be formed in the shape of vertically elongated rectangular grooves on each joint surface of a pair of joint wall sections (510). A pair of vertical grooves (512) may be formed to be connected from the top to the bottom of the joint surface.

[0071] Two facing vertical grooves (512) extend to the upper surface of the joint (500) to form a filling port that can insert a filling material into the upper surface of the joint (500).

[0072] A plurality of horizontal grooves (511) and a pair of vertical grooves (512) formed on each joint surface of a pair of joint wall sections (510) can be formed symmetrically to each other at positions facing each other.

[0073] As illustrated in FIG. 5, a pair of vertical grooves (512) may further include a plurality of deep grooves (513) formed deeper than the vertical grooves (512) and arranged vertically spaced apart, and a plurality of steel insertion holes (530) perforated in the vertical grooves (512) into which steel (550) is inserted and arranged vertically spaced apart.

[0074] A plurality of deep grooves (513) may be formed in the shape of rectangular grooves that have the same width as the vertical groove (512) but are deeper than the vertical groove (512). By arranging the plurality of deep grooves (513) at predetermined intervals in the vertical direction, the portions between the deep grooves (513) may protrude relatively above the bottom surface of the deep groove (513), so that the vertical groove (512) and the deep groove (513) may be formed in an uneven shape.

[0075] As illustrated in FIGS. 2 to 4, one or two steel insertion holes (530) may be horizontally drilled so as to be arranged vertically at predetermined intervals in the vertical groove (512) of a height-adjustable PC fitting (230). A steel insertion hole (530) may be drilled in each of the integrated PC member (110) and the height-adjustable PC fitting (130) of the stairwell (100).

[0076] As shown in FIG. 2, the steel insertion opening (530) can be formed by drilling along the interior at the same position facing the joint surface between the wall portions of the stairwell (100) and the vestibule (200). Both ends of the steel insertion opening (530) can be formed by bending so as to communicate with the outer surface of the wall portions of the stairwell (100) and the vestibule (200).

[0077] The joint surface of a pair of joint wall sections (510) can be integrated and joined by a steel member (550) that is inserted into a steel insertion hole (530) formed by drilling in the pair of wall sections to be joined and tensioned, and a filler material that is filled into a plurality of horizontal grooves (511) and a pair of vertical grooves (512) between the two joint surfaces.

[0078] The steel member (550) can be inserted into one end of the steel member insertion port (530) and protrude from the other end of the steel member insertion port (530), so that both ends can be fixed. The steel member (550) is composed of a flexible steel wire and can be easily inserted into the steel member insertion port (530) formed by bending. After the steel member (550) is inserted into the steel member insertion port (530), one end can be fixed and the other end can be pulled to tension and then fixed.

[0079] A filler material, such as mortar, can be filled between the joint surfaces of a pair of joint wall sections (510) to fill up to an uneven surface (rough surface) composed of a plurality of horizontal grooves (511), a pair of vertical grooves (512), and a plurality of deep grooves (513). The plurality of horizontal grooves (511), a pair of vertical grooves (512), and a plurality of deep grooves (513) can accommodate the filler material and act as shear keys to resist shear forces acting in the horizontal and vertical directions.

[0080] In this way, the two joint surfaces of a pair of joint wall sections (510) can be firmly joined to each other by a filler material that fills the gap between the tensioned steel member (550) and the rough surface.

[0081] As illustrated in FIGS. 2, 4 and 5, the steel insertion opening (530) may have an enlarged portion (535) formed by expanding near the joint surface of a pair of joint wall portions (510).

[0082] The steel insertion opening (530) is formed to have a circular cross-section with a constant inner diameter, and the inner diameter may increase near the joint surface so that an enlarged portion (535) is formed at the end thereof. Since the steel insertion openings (530) of the two facing joint surfaces are formed as enlarged portions (535), when inserting steel (550), it can be easily inserted into the steel insertion openings (530) formed on the two spaced joint surfaces.

[0083] As shown in FIGS. 3 to 5, a pair of tensioning work holes (530) may be formed concavely on the outer surfaces of the two wall sections of the stairwell (100) and the vestibule (200) that are connected to each other on both sides of a pair of connecting wall sections (510), with both ends of the steel insertion holes (530) communicating with each other.

[0084] The tensioning work member (530) may be formed concavely in the shape of a truncated rectangle on the outer surface of each wall section on both sides of the joint section (500). A steel insertion opening (530) may be formed so as to be connected to the inclined surface of the tensioning work member (530) toward the joint section (500).

[0085] With this tensioning workpiece (530), the steel (550) can be easily inserted into the steel insertion part (530), and the steel (550) can be easily tensioned and fixed.

[0086] FIG. 9 is a top view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention, FIG. 10 is a longitudinal section view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention, FIG. 11 is a top view showing the vestibule, stairwell, and auxiliary room in the second embodiment of the present invention, FIG. 12 is a front view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention, and FIG. 13 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the second embodiment of the present invention.

[0087] The construction structure for dividing and joining a box-shaped PC wall according to the second embodiment of the present invention further includes an auxiliary room (300) joined to the other side of the stairwell (100) compared to the first embodiment.

[0088] An anteroom (200) may be connected to one side of the stairwell (100) by a joint (500), and an auxiliary room (300) may be connected to the other side of the stairwell (100) by a joint (500).

[0089] The joint (500) of the stairwell (100) and the annex (300) can be integrated and joined by a steel member (550) inserted and tensioned between the two wall sections and a filler material filled between the joint surfaces of the two wall sections.

[0090] The auxiliary room (300) may include a single slab-integrated PC member (310) and a plurality of height-adjustable PC fittings (330) stacked and coupled thereunder. The auxiliary room (300) may constitute an elevator room.

[0091] The slab-integrated PC member (310) can be joined to the true-integrated PC member (110) by means of steel (550) and filler.

[0092] The height-adjustable PC insert (330) can be joined to the height-adjustable PC insert (130) of the stairwell (100) by means of one or more steel materials (550) and a filler.

[0093] As illustrated in FIG. 10, each height-adjustable PC fitting (330) is arranged so that a plurality of vertical reinforcing bars (331) are embedded and protrude from the upper surface, and the upper and lower vertical reinforcing bars (331) can be connected by a plurality of splice sleeves (332) embedded in the lower part of each height-adjustable PC fitting (330).

[0094] As illustrated in FIG. 11, the slab-integrated PC member (310) may have a plurality of through holes (312) formed in the wall portion (311) through which a plurality of vertical reinforcing bars (331) pass.

[0095] FIG. 14 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention, FIG. 15 is a top view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention, FIG. 16 is a top view showing an annex room, an anteroom, and a stairwell in the third embodiment of the present invention, FIG. 17 is a front view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention, and FIG. 18 is a perspective view showing the division and joining construction structure of a box-type PC wall according to the third embodiment of the present invention.

[0096] The construction structure for dividing and joining a box-type PC wall according to the third embodiment of the present invention further includes an auxiliary room (300) joined to the other side of the anteroom (200) compared to the first embodiment.

[0097] An anteroom (200) may be connected to one side of the stairwell (100) by a joint (500), and an auxiliary room (300) may be connected to the other side of the anteroom (200) by a joint (500).

[0098] The joint (500) of the anteroom (200) and the annex (300) can be integrated and joined by a steel member (550) inserted and tensioned between the two wall sections and a filler material filled between the joint surfaces of the two wall sections.

[0099] The auxiliary room (300) may include a single slab-integrated PC member (310) and a plurality of height-adjustable PC fittings (330) stacked and coupled thereunder.

[0100] The slab-integrated PC member (310) can be joined to the slab-integrated PC member (210) of the vestibule (200) by means of steel (550) and filler.

[0101] The height-adjustable PC fitting (330) can be joined to the height-adjustable PC fitting (230) of the vestibule (200) by means of one or more steel materials (550) and a filler.

[0102] As illustrated in FIG. 15, each height-adjustable PC fitting (330) is arranged so that a plurality of vertical reinforcing bars (331) are embedded and protrude from the upper surface, and the upper and lower vertical reinforcing bars (331) can be connected by a plurality of splice sleeves (332) embedded in the lower part of each height-adjustable PC fitting (330).

[0103] As illustrated in FIG. 16, the slab-integrated PC member (310) may have a plurality of through holes (312) formed in the wall portion (311) through which a plurality of vertical reinforcing bars (331) pass.

[0104] According to the division and joint construction structure of the box-type PC wall of the present invention, division is minimized by using box-type integrated PC members, such as stairwells, vestibules, and auxiliary rooms (elevator rooms), which constitute the core structure of a concrete building structure. In particular, for the walls in the parts where the floor is formed, a floor-wall integrated box-type PC member is applied to enable standard production assembly, thereby reducing construction time. Furthermore, economic efficiency is secured by utilizing interlocking members that simplify and absorb various changes in floor height. Additionally, structural performance can be secured at the divided joint surfaces through the filling of high-strength non-shrink mortar, which eliminates the need for cast-in-place concrete, and the introduction of steel tensile force (post-tension).

[0105] Although an embodiment of the present invention has been described above, those skilled in the art may modify and change the present invention in various ways by adding, changing, deleting, or adding components, etc., without departing from the spirit of the present invention as described in the claims, and such modifications and changes are also to be considered to be included within the scope of the rights of the present invention. Explanation of the symbols

[0106] 100: Stairwell 110: True All-in-One PC Absence 111: Wall section 112: Penetrating hole 115: True Father 130: Height-adjustable PC clip 131: Vertical reinforcement 132: Splice Sleeve 150: PC Stairs 200: Vestibule 210: Slab-integrated PC member 211: Wall section 212: Penetrating hole 215: Slab section 230: Height-adjustable PC clip 231: Vertical reinforcement 232: Splice Sleeve 300: Annex 310: Slab-integrated PC component 311: Wall section 312: Penetrating hole 315: Slab section 330: Height-adjustable PC clip 331: Vertical reinforcement 332: Splice Sleeve 500: Joint 510: Joint wall section 511: Horizontal groove 512: Vertical groove 513: Deep recess 520: Tension workpiece 530: Steel insertion port 535: Expansion study 550: Steel

Claims

Claim 1 A construction structure for the division and joining of box-type PC walls, comprising: a stairwell in which a plurality of PC members are manufactured by forming multiple wall sections integrally and dividing them horizontally, and stacking them on-site; and a vestibule in which a plurality of PC members are manufactured by forming multiple wall sections integrally and dividing them horizontally, and stacking them on-site, and joined to one side of the stairwell, wherein the joint between the stairwell and the vestibule is integrally joined by a steel member inserted and tensioned between the two wall sections and a filler material filled between the joint surfaces of the two wall sections. Claim 2 A construction structure for the division and joining of a box-type PC wall according to claim 1, characterized in that the stairwell comprises a landing-integrated PC member in which a plurality of wall sections and a landing section are integrally formed, a height-adjustable PC fitting in which a plurality of wall sections are integrally formed, and a PC staircase mounted between a plurality of landing sections. Claim 3 A construction structure for dividing and joining a box-type PC wall, characterized in that, in paragraph 2, the above-mentioned vestibule comprises a slab-integrated PC member in which a plurality of wall sections and a slab section are integrally formed, and a plurality of height-adjustable PC fittings in which a plurality of wall sections are integrally formed. Claim 4 A construction structure for dividing and joining a box-type PC wall, characterized in that, in paragraph 3, the horizontal dividing surface of the above-mentioned integrated PC member coincides with the upper surface of the above-mentioned member, and the horizontal dividing surface of the above-mentioned integrated PC member coincides with the upper surface of the above-mentioned slab member. Claim 5 A construction structure for dividing and joining a box-type PC wall, characterized in that, in paragraph 3, the above-mentioned true integrated PC member and the above-mentioned slab integrated PC member each include a plurality of through holes through which the upper ends of a plurality of vertical reinforcing bars protruding upward from the upper surface of the height-adjustable PC member pass, and the above-mentioned true integrated PC member is embedded in the height-adjustable PC fitting below. Claim 6 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 5, the plurality of penetration holes have corrugated inner surfaces, and after assembly so that vertical reinforcing bars are inserted into each penetration hole, a filler made of non-shrink mortar is injected to connect and anchor the vertical reinforcing bars. Claim 7 A structure for the division and joining of a box-type PC wall according to claim 1, wherein the joint between the stairwell and the vestibule comprises a pair of joint wall sections shared by the stairwell and the vestibule in a connected manner, and the pair of joint wall sections are vertically divided and manufactured with a symmetrical gap from the center of the wall and joined and constructed on-site. Claim 8 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 7, the joining surface of the pair of joining wall sections is formed horizontally and has a plurality of horizontal grooves arranged vertically, and the joining surface of the longitudinal wall sections of the stairwell and vestibule on both sides of the joining wall section has a pair of vertical grooves formed vertically on both sides of the plurality of horizontal grooves. Claim 9 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 8, the above pair of vertical grooves further comprises a plurality of deep grooves formed deeper than the vertical grooves and arranged vertically spaced apart, and a plurality of steel insertion holes drilled in the vertical grooves to insert steel and arranged vertically spaced apart. Claim 10 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 8, the joining surface of the pair of joining wall sections is integrated and joined by a steel member inserted and tensioned into a steel member insertion hole formed by drilling in a pair of longitudinal wall sections connecting the two, and a filler member filled in a plurality of horizontal grooves and a pair of vertical grooves between the two joining surfaces. Claim 11 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 9, the steel insertion opening comprises an enlarged portion formed by expanding from the joint surface of the longitudinal wall section. Claim 12 A construction structure for dividing and joining a box-type PC wall, characterized in that, in claim 9, a pair of tensioning holes are formed concavely on the outer surfaces of the two longitudinal wall sections of the stairwell and vestibule that are connected to each other on both sides of the pair of joining wall sections, such that the two ends of the steel insertion holes are connected. Claim 13 A construction structure for the division and joining of a box-type PC wall according to claim 1, wherein a plurality of PC members are constructed by stacking them on-site, with a plurality of wall sections formed integrally and horizontally divided, and further comprising an annex room joined to the other side of the stairwell or the other side of the vestibule, wherein the joint between the stairwell and the annex room or the joint between the annex room and the vestibule is integrally joined by a steel member inserted and tensioned between the two wall sections and a filler material filled between the joint surfaces of the two wall sections.

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