Frame and construction method of frame

Abstract

To solve the problem in which, in the case where a beam and a column constituting a frame has a combination of RC construction and S construction, S construction and RC construction, or a cast-in-place beam of RC or SRC and a CFT column, there is a problem of weather resistance in reinforcement corrosion inside.SOLUTION: In a frame which has a combination of a cast-in-place beam of RC or SRC and a CFT column, the frame itself is constituted by a precast panel zone block, upper and lower steel pipe columns, and a cast-in-place beam. The panel zone block includes: an air-bleeding hole penetrating almost at the center of itself vertically; and an umbrella-like inclined surface in which the gradient goes down in the periphery of the air-bleeding hole on a lower surface of itself. Also, in the steel pipe column, the panel block zone is fixed by a first steel bar in a fixing hole of a flange plate at an upper end of itself, concrete is filled, and the air inside itself is pushed up to the air-bleeding hole from the umbrella-like inclined surface to integrate.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a frame and a method for constructing a frame, and in particular to a frame in a "multi-story building incorporating a frame" in which "the beams and columns that make up the frame itself" are made of RC (Reinforced Concrete) beams and CFT (Concrete Filled Steel Tube) columns, and which has excellent weather resistance, ease of construction, earthquake resistance, and sound insulation, and the construction method is suitable for constructing a tubular frame to be placed in the center of a multi-story building. [Background technology]

[0002] In recent years, many multi-story buildings have adopted tubular frames in the center. The history of tubular frames is long, and the first was the 43-story reinforced concrete David Chestnut Apartment, built in Chicago in 1966. In Japan, the World Trade Center Building (38 floors, 152m) in Hamamatsucho, Tokyo, completed in 1970, was the first, followed by the Shinjuku Sumitomo Building (52 floors, 212m) and Yokohama MM21 Landmark Tower (73 floors, 296m). Currently, most high-rise multi-story buildings are built using tubular frames.

[0003] The tubular structure located in the center of the multi-story building is composed of the "beams and columns that make up the structure itself" and "beams that are erected horizontally and perpendicularly from the structure to the periphery." By providing elevators and machine rooms in the center of the tubular structure and living space on the periphery, we were able to realize a multi-story building with excellent structural rationality, high design freedom, and effective use of internal space. Furthermore, compared to a simple rigid-frame structure, a tube-shaped structure can reduce the cross-sectional force of each column relatively, resulting in cost reduction.

[0004] In the past, most tubular structures were constructed using SRC or RC construction, rather than steel construction (hereafter abbreviated as "S construction"). The reason for this is that SRC (Steel Construction) is more durable than S construction. Reinforced concrete (RC) and reinforced concrete structures are heavy and highly rigid, and can also have excellent earthquake resistance and soundproofing properties.

[0005] Recently, most tubular structures are made of RC rather than SRC. The reason for this is that RC construction is easier and cheaper to design and construct than SRC construction, thanks to the practical application of high-strength concrete and high-strength reinforcing bars, the invention of a method of connecting RC columns and RC beams with excellent deformation performance, the development of analytical techniques, the improvement of computer performance, and the development of precast technology.

[0006] Recently, the use of tubular structures made of RC beams and CFT columns, which are heavy, highly rigid, and have excellent earthquake resistance and soundproofing properties, has been increasing. The background to this is that CFT columns have the advantage of being able to freely increase rigidity, slim down the structure, and increase the internal space by changing the thickness of the steel pipe members, using RCFT (Reinforced Concrete Columns formed in Steel Tube) columns with rebar inside, and using high-strength concrete, etc. And RC beams have the advantage of reducing noise and vibration, and being able to inexpensively increase the earthquake resistance of the entire tube-shaped structure. In addition, CFT columns have the advantage that the steel pipes are lightweight when erecting them and can be filled with concrete all at once after erection, making construction simple and quick. There are also no restrictions on the height that can be poured in one go, and there are no concerns about cracks caused by temperature stress.

[0007] Patent Document 1 describes a suitable technology for a multi-story building that has a framework in the center that is roughly rectangular in plan and tubular in three dimensions, with "beams and columns that make up the framework itself" made of reinforced concrete and "erecting beams that are erected perpendicularly and horizontally from the framework to the periphery" made of steel beams.

[0008] Patent Document 2 describes a panel zone block technology for a structure consisting of RC beams and steel-tube concrete columns. The core reinforcing bar protruding from the bottom end of the steel-tube concrete column is inserted and fixed into a splice sleeve on the top surface of the panel zone block (see

[0013] in Patent Document 2). Then, the panel zone that sandwiches the steel-tube concrete column from above and below and joins the RC beam horizontally is precast, streamlining the complicated work of the panel zone and joints (see Figure 1 in Patent Document 2).

[0009] The technology shown in Fig. 3 of Patent Document 3 is a joint structure technology for an RC slab and a frame of post-filled CFT columns. The slab rebars are joined to the external diaphragms of a series of steel pipe columns that run vertically from top to bottom through each floor (see Fig. 3 of Patent Document 3).

[0010] The technology disclosed in Patent Document 4 is a joining structure technology for a frame consisting of an RC beam and a series of post-filled CFT columns running vertically up and down through each floor (see Figure 1 of Patent Document 4). [Prior art documents] [Patent documents]

[0011] [Patent Document 1] JP 2011-69148 A [Patent Document 2] JP 2013-11103 A [Patent Document 3] Patent No. 6477552 [Patent Document 4] Japanese Patent Application Publication No. 11-210077 Summary of the Invention [Problem to be solved by the invention]

[0012] The technique disclosed in Patent Document 1 above has the following problems in terms of weather resistance. The panel zone has a connection section surrounded by a rectangular tubular sealing steel plate, and the steel beam penetrates through the sealing steel plate together with the panel section (see Figure 2 of Patent Document 1). As a result, the steel beams and sealing steel plates that penetrate the panel zone become a continuous steel interface from the outside to the inside of the RC, and serve as a supply path for carbon dioxide and moisture in the air to enter the inside of the panel zone, inducing corrosion of the internal rebar. In the other "joint between an RC column and a steel beam," the end of the steel beam is covered with reinforced concrete, and the covering of the reinforced concrete is tension-fixed to the RC column with prestressing steel (see Fig. 6 of Patent Document 1). For this reason, the steel beams coated on the reinforced concrete become a continuous steel interface from the outside to the inside of the RC, and serve as a route for carbon dioxide and moisture in the air to enter the RC interior, inducing corrosion of the internal rebar.

[0013] The technology disclosed in Patent Document 1 has the following problems in terms of workability. Due to the structure, construction of the joints on each floor requires tedious manual work for each location, so the necessary work base will be established upon completion of construction of the reinforced concrete floors, etc. on each floor. This means that the overall construction period will be dependent on the progress of each floor's cast-in-place reinforced concrete floors, resulting in delays in the process.

[0014] Furthermore, the technique disclosed in Patent Document 2 has the following problems in terms of weather resistance. The panel zone block is surrounded by reinforcing steel plates on all four sides as shear reinforcement against the force that tends to expand due to the large vertical column axial force (see

[0028] in Patent Document 2). In this case, the sealing steel plates become a steel interface that continues from the outside to the inside of the panel zone, and become a supply path for carbon dioxide and moisture in the air to enter the inside of the panel zone, inducing corrosion of the internal rebar (see Figure 1 in Patent Document 2). In short, in the method of sandwiching the panel zone block between the upper and lower steel pipe concrete columns, the column rebar or column steel frame cannot be arranged in a continuous manner inside the upper and lower steel pipe concrete columns in the panel zone. Therefore, it is impossible to eliminate the reinforcing steel plate that acts as a shear reinforcement material, and the problem of the corrosion of the internal rebar cannot be solved. This significantly limits the degree of freedom in the design of the tubular frame itself.

[0015] The technique disclosed in Patent Document 2 has the following problems in terms of workability. Steel-tube concrete columns are all precast, filled with concrete in advance, and are not CFT columns, which are filled after construction, so they are very heavy (see

[0013] in Patent Document 2). For this reason, erecting the crane is dangerous. -Installing heavy panel zone blocks on unfixed, upright steel pipe concrete columns is unstable, dangerous, and construction precision cannot be ensured.

[0016] Furthermore, the technique shown in FIG. 3 disclosed in Patent Document 3 has the following problems in terms of weather resistance. Steel pipe columns act as a continuous steel interface from the outside to the inside of the RC, and act as a pathway for carbon dioxide and moisture in the air to enter the RC interior, inducing corrosion of the internal rebar.

[0017] The technique shown in FIG. 3 disclosed in Patent Document 3 has the following problems in terms of workability. In the case of RC slabs, the process of connecting the slab reinforcement to the outer diaphragm for each layer is complicated.

[0018] Furthermore, the technique disclosed in Patent Document 4 has the following problems in terms of weather resistance. Steel pipe columns and H-shaped steel beams form a continuous steel interface from the outside to the inside of the RC, and act as a supply path for carbon dioxide and moisture in the air to enter the RC interior, inducing corrosion of the internal rebars.

[0019] The technique disclosed in Patent Document 4 has the following problems in terms of workability. -The H-shaped steel embedded in RC beams becomes a structural weakness as it hinders compaction, air escape, and bleeding during concrete pouring. In addition, non-breathing type high-flow concrete, which improves this, is costly. - The work of connecting the beam rebars at each floor to the end joints and H-shaped steel is complicated.

[0020] Above, we have explained the issues regarding weather resistance and workability of the structures of multi-story buildings incorporating frameworks in Patent Documents 1 to 4. These challenges are summarized below in 1) to 3).

[0021] 1) Conventionally, in the panel zone of a structure, when the beams and columns are a combination of RC and S, S and RC, or RC or SRC cast-in-place beams and CFT columns, the steel materials that make up the diaphragms, reinforcing sealing steel plates, and columns and beams are inevitably connected from the outside to the inside of the RC when the steel frame is joined to the RC structure. This steel interface becomes a supply path for carbon dioxide and moisture in the air to enter the panel zone, inducing corrosion of the internal rebar (see Figure 2 in Patent Document 1, Figure 1 in Patent Document 2, Figure 3 in Patent Document 3, and Figure 1 in Patent Document 4).

[0022] 2) Conventionally, in the panel zone of a structure, when the beams and columns are a combination of RC and S, S and RC, or RC or SRC cast-in-place beams and CFT columns, construction of the joints on each floor requires tedious manual work. For this reason, in order to secure the necessary work base, columns and beams are constructed in sync with the construction of each floor or beam of cast-in-place RC, which causes delays in the process.

[0023] 3) Conventionally, in the case of a combination of cast-in-place RC beams and CFT columns in the panel zone of a frame, as in the technology of Patent Document 4, an H-shaped steel that is included in the beam rebar of the cast-in-place RC beam can be attached to the end joint of the steel pipe column that forms the panel zone. However, in this case, the H-shaped steel that is included in the cast-in-place beam inhibits compaction, air escape, and bleeding when the concrete of the cast-in-place beam is poured, becoming a structural weakness. In addition, non-breathing type high-flow concrete that improves this problem increases the cost (see Figure 1 of Patent Document 4).

[0024] 4) Conventional RC beam and CFT column frameworks have a structure in which RC beams are attached via SRC joints to a series of CFT columns running vertically up and down through each floor, and this structure has had problems with weather resistance due to corrosion of internal rebars, etc. (See Fig. 3 of Patent Document 3 and Fig. 6 of Patent Document 4.) And no precast structure or construction method has been found that would solve this problem by dividing the CFT columns with RC beams, rather than a series running up and down.

[0025] The weather resistance requirement of precast structures, in which the steel interface is not continuous from the outside to the inside of the RC, and the CFT columns are divided by RC beams rather than being continuous from top to bottom, is the main problem that this invention aims to solve. [Means for solving the problem]

[0026] In order to solve the above problems, the first aspect of the present invention is to In the framework of a multi-story building, The frame is composed of at least a precast panel zone block, a steel pipe column having flange plates at both the upper and lower ends, and a cast-in-place beam having a beam reinforcing bar or a beam steel frame horizontally embedded therein, the beam reinforcing bar being surrounded by a hoop reinforcement. The panel zone block is a structural member characterized in that it contains within it a first reinforcing bar or a first steel frame for horizontally joining to the beam reinforcing bar or the beam steel frame, respectively, and a first steel bar for fixing the steel pipe column above and below.

[0027] The second aspect of the present invention is a frame structure of the first aspect, The panel zone block is provided with a structure characterized in that the panel zone block has an air vent hole penetrating vertically approximately at the center thereof, and an umbrella-shaped inclined surface on its underside that slopes downward from the air vent hole toward the periphery.

[0028] The third aspect of the present invention is a frame structure of the second aspect, The steel pipe column and the panel zone block are integrated by fixing the panel zone block to the fixing hole of the flange plate at the upper end of the steel pipe column with the first steel bar, filling the steel pipe column with concrete, and pushing the air inside the steel pipe column up from the umbrella-shaped inclined surface to the air vent hole.

[0029] The fourth aspect of the present invention is a frame structure according to the first aspect, The frame has a generally rectangular shape in plan view and a tubular shape in three dimensions, At least two or more of the steel pipe columns arranged on any one side of the approximately rectangular shape are provided with a horizontal connecting beam that fixes them to each other in the direction of the one side, and an erection beam that is fixed perpendicular to the direction of the one side and horizontally in the vicinity of its upper end, The present invention provides a structure, characterized in that the steel pipe column and the panel zone block are fixed by passing the first steel bar through a fixing hole in the flange plate at the upper end of the steel pipe column.

[0030] A fifth aspect of the present invention is a method for constructing a structure using the structure of the third aspect and the structure of the fourth aspect, comprising: A first step of placing the panel zone block on the leading portion of the steel pipe column fixed at a predetermined position for each side by the erection beam and the horizontal tie beam with the first steel bar and fixing it, and further, horizontally joining the panel zone blocks to the beam reinforcing bar or the beam steel frame with the first reinforcing bar or the first steel frame, respectively, with the panel zone block between them; A second step of filling the panel zone block with concrete in the leading portion of the steel pipe column to push the air inside the steel pipe column up from the umbrella-shaped inclined surface of the panel zone block to the air vent hole to integrate the panel zone block; A third step of assembling the panel zone blocks joined to the beam reinforcing bar or the beam steel frame in the first step, and integrating the panel zone blocks by pouring concrete into the beam reinforcing bar or the beam steel frame, and The present invention provides a method for constructing a structure, which includes a fourth step of placing and fixing the trailing portion of the steel pipe column onto the panel zone block using the first steel bar, and fixing each side at a predetermined position using a new erection beam and the horizontal tie beam. Effect of the Invention

[0031] The first aspect of the present invention provides the following advantages 1) to 6) (see Figs. 4, 14, 3, 7 and 15). The frame 11 is composed of at least a precast panel zone block 20, a steel pipe column 30 having flange plates (ends) 37 at both the top and bottom ends, and a cast-in-place beam 15 having a beam reinforcing bar 41 or a beam steel frame 43 horizontally embedded therein and externally wrapped in a hoop reinforcement 75. The panel zone block 20 has a first reinforcing bar 45 or a first steel frame 47 disposed therein for horizontally joining to the beam reinforcing bar 41 or the beam steel frame 43, respectively, and a first steel bar 49 for vertically fixing to the steel pipe column 30.

[0032] 1) In the panel zone of a conventional RC or SRC cast-in-place beam and CFT column frame, the steel penetrates from the steel pipe side to the rebar side inside the cast-in-place beam, and the steel interface is continuous from the outside to the inside of the RC, which acts as a supply path for deterioration factors and corrodes the internal rebar (see Figure 1 of Patent Document 4). However, the vertically connected steel pipe columns 30 sandwich the panel zone block 20 between them and do not penetrate it, and the cast-in-place beams 15 that are horizontally connected sandwich the panel zone block 20 between them and do not contain any steel materials other than the beam reinforcing bars 41 or beam steel frames 43, so that the steel interface does not continue from the outside to the inside of the panel zone block 20 (see also the enlarged view of part q6 in Figure 7 and the enlarged view of the position corresponding to part q8 in Figure 15). For this reason, the internal reinforcing bars in the panel zone do not corrode.

[0033] 2) In the panel zone of the conventional column and beam frame, including the combination of RC or SRC cast-in-place beams and CFT columns, construction of joints on each floor requires cumbersome manual work. For this reason, in order to secure the necessary work base, the joints are constructed in sync with the construction of each floor of the cast-in-place beams and floors, which causes delays in the process. However, in the panel zone to be precast for reinforced concrete construction, the first steel bar 49 is vertically contained within and protrudes from the upper and lower smooth surfaces 31, and the first steel bar 49 is inserted into the fixing holes 74 in the flange plates (ends) 37 of the upper and lower steel pipe columns 30, fixing the upper and lower steel pipe columns 30 in close contact with their own smooth surfaces 31 (see also the enlarged view of part q6 in Figure 7, the enlarged view of part q12 in Figure 13, and Figure 5). This simplifies the construction of joints, and since the construction of columns is not synchronized with the construction of each layer of cast-in-place reinforced concrete beams and floors, construction can be carried out quickly.

[0034] 3) Conventionally, panel zone blocks required reinforcing steel plates as shear reinforcement, and since the steel interface was continuous from the outside to the inside of the RC, there were concerns about corrosion of the internal rebar (see Figures 1 and 2 of Patent Document 2). However, the second reinforcing bars 46 or second steel frames 48 are arranged so as to protrude from inside the panel zone block 20 near the inner circumferential surfaces of the upper and lower steel pipe columns 30 (see Fig. 4, Fig. 14, the enlarged view of part q12 in Fig. 13, and the enlarged view of the corresponding position in part q8 in Fig. 15). In this way, the upper and lower steel pipe columns 30, when filled with high-flow concrete 65, become a continuous column structure that does not require reinforcing materials such as sealing steel plates in terms of the load-bearing capacity of the cross-sectional force, and there is no steel material interface that continues from the outside to the inside of the RC, eliminating concerns about corrosion of the internal reinforcing bars.

[0035] 4) When the panel zone block 20 is joined to the cast-in-place beam 15, the beam reinforcement bar 41 which sandwiches the panel zone block 20 and faces horizontally and is surrounded by the hoop reinforcement 75 is joined to the first reinforcement bar 45 contained within the panel zone block 20 using a mechanical joint 51, or the beam steel frame 43 which sandwiches the panel zone block 20 and faces horizontally and is surrounded by the hoop reinforcement 75 is joined to the first steel frame 47 contained within the panel zone block 20 using a splice plate 52 (see the enlarged view of part q6 in Figure 7 and the enlarged view of the position corresponding to part q8 in Figure 15). In this way, the internal first reinforcing bar 45 or first steel frame 47 becomes integrated with the beam reinforcing bar 41 or beam steel frame 43, respectively, and the cast-in-place beam 15 becomes a continuous, integrated beam structure sandwiched between the panel zone block 20 in terms of withstanding the cross-sectional force, thereby ensuring the rigidity of the entire frame.

[0036] 5) The first reinforcing bar 45, the second reinforcing bar 46, and the first steel frame 47, which are included in the panel zone block 20, may be connected to external reinforcing bars and steel frames by mechanical joints 51 and splice plates 52, respectively. Such a configuration makes it easier to manufacture and transport the panel zone block 20 (see the enlarged view of part q6 in FIG. 7, the enlarged view of part q10 in FIG. 11, and the enlarged view of the position corresponding to part q8 in FIG. 15).

[0037] 6) The steel pipe columns 30 can be fixed at a predetermined position on each side of the frame 11 by the horizontal tie beams 13 and the erection beams 12. Therefore, each panel zone block 20 erected on the upper end of each steel pipe column 30 can be correctly fixed at a predetermined position in the vertical and horizontal directions by fixing it to the steel pipe column 30 by the first steel bar 49 and horizontally joining the first reinforcing bar 45 and the beam reinforcing bar 41 or the first steel frame 47 and the beam steel frame 43 with each panel zone block 20 in a gap (see Figs. 12, 7, and 15).

[0038] Next, the following effect 7) can be achieved with respect to the following content of the second aspect of the present invention. The panel zone block 20 has an air vent hole 62 that penetrates vertically approximately in the center, and an umbrella-shaped inclined surface 63 on its underside that slopes downward from the air vent hole 62 to the periphery (see Figures 4 and 5). The steel pipe column 30 has the panel zone block 20 fixed to the fixing hole 74 of the flange plate 37 at its upper end by the first steel bar 49, and is then filled with concrete to push the air 61 inside the column up from the umbrella-shaped inclined surface 63 to the air vent hole 62 and integrate the column (see Figures 4, 5, and 9).

[0039] 7) The inside of the steel pipe column 30 fixed below the panel zone block 20 is filled with high-flow concrete 65 by pushing air up from the umbrella-shaped inclined surface 63 to the air vent hole 62. In this way, the panel zone block 20 and the steel pipe column 30 can be tightly integrated without causing air pockets (see Figures 4, 5, and 9).

[0040] Next, the following effects 8) to 9) can be achieved with respect to the third aspect of the present invention. The frame 11 is roughly rectangular in plan view and tubular in stereoscopic view. At least two or more of the steel pipe columns 30 arranged on any one side of the approximate rectangle are provided with horizontal tie beams 13 that fix them to each other in the direction of one side, and erection beams 12 that are fixed horizontally and perpendicular to the direction of one side near their own upper ends (see Figures 6 and 7).

[0041] 8) Conventionally, in the case of steel beams, erection beams penetrate the panel zone block due to the need for rigid connection, which makes the joint structure complicated and the steel beams themselves become a path for supplying carbon dioxide and moisture in the air to the inside, causing corrosion of the internal reinforcing bars (see Fig. 2 in Patent Document 1). However, the erection beam 12 can be fixed directly to the steel pipe column 30 and does not penetrate the panel zone block 20 (see Fig. 13). This simplifies the joint, simplifies construction, and does not induce corrosion of the internal reinforcing bars.

[0042] 9) Generally, when a heavy panel zone block is installed on the top end of a steel pipe column, the steel pipe column shakes, making the work dangerous and reducing accuracy. However, at least two or more steel pipe columns 30 arranged on one side of the approximate rectangle are fixed to the erection beam 12, and all the steel pipe columns 30 on that side are connected to the horizontal tie beam 13 (see Figure 6). In this way, none of the steel pipe columns 30 shake anymore, and they can be fixed in the designated position all at once (see Figure 7).

[0043] The contents and effects of the first to fourth steps of the fourth aspect of the present invention will be described in detail in "Steps for constructing the frame of the embodiment." [Brief description of the drawings]

[0044] [Figure 1] FIG. 1 is an overall view of a multi-story building common to Examples 1 to 3. [Diagram 2] FIG. 2 is a completed view of a tubular frame common to the first to third embodiments. [Diagram 3] FIG. 3 is a structural diagram of a steel pipe pole common to Examples 1 to 3. [Figure 4] FIG. 4 is a diagram showing the panel zone block structure of the first embodiment. [Diagram 5] FIG. 5 is an enlarged view of part c in FIG. [Figure 6] FIG. 6 is a structural diagram of the first step of the first embodiment. [Figure 7] FIG. 7 is a detailed diagram of the first step of the first embodiment. [Figure 8] FIG. 8 is a structural diagram of the second step of the first embodiment. [Figure 9] FIG. 9 is a detailed diagram of the second step of the first embodiment. [Figure 10] FIG. 10 is a structural diagram of the third step of the first embodiment. [Figure 11] FIG. 11 is a detailed diagram of the third step of the first embodiment. [Figure 12] FIG. 12 is a structural view of the fourth step of the first embodiment. [Figure 13] FIG. 13 is a detailed diagram of the fourth step of the first embodiment. [Figure 14] FIG. 14 is a diagram showing a panel zone block structure according to the second embodiment. [Figure 15] FIG. 15 is a detailed view of the second step of the second embodiment. [Figure 16] FIG. 16 is a diagram showing a panel zone block structure according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0045] Prior to describing the embodiments of the present invention, common configurations that are the premise of each embodiment will be described in A) to K) with reference to Figures 1 to 3. Note that the effects of A) to K) will be described later together with the effects of each embodiment, and will not be described here.

[0046] Fig. 1 is an overall view of a multi-story building common to Examples 1 to 3, with the P-P' cross section showing a plan view and the Q-Q' cross section showing a side view. The characteristics of the multi-story building are described below in A) to C) with reference to Fig. 1. A) In the center is a frame 11 that is roughly rectangular in plan view and tubular in stereoscopic view. (a) The frame 11 is composed of a panel zone block 20, a CFT column made of steel pipe column 30 filled with concrete, and a cast-in-place beam 15, and an erection beam 12 is erected perpendicularly and horizontally from the frame 11 to the outer periphery 17. (c) Precast panel zone blocks 20 are placed at the nodes of the upper and lower steel pipe columns 30, the horizontally opposing cast-in-place beams 15, and the erection beams 12 extending perpendicularly and horizontally from the frame 11 to the outer periphery 17, and these are connected together.

[0047] Fig. 2 is a completed view of the tubular frame 11 common to Examples 1 to 3, and shows an enlarged view of parts a and b in Fig. 1. The features of the frame 11 will be described in the following sections e) to g) with reference to Fig. 2. e) The panel zone blocks 20 and the steel pipe columns 30 are general terms for their respective types, and their shapes are determined by whether or not they are located at the corners of the approximately rectangular sides of the frame 11. The panel zone blocks 20 are available in panel zone block (corner portion) 21 and panel zone block (non-corner portion) 22 types, and the steel pipe columns 30 are available in steel pipe column (corner portion) 32 and steel pipe column (non-corner portion) 33 types, and each has a different shape (see Figures 2 and 6 together). E) The structural features of the corner and non-corner portions of the panel zone block 20 and steel pipe column 30 differ in that the former "sandwiches two steel pipe columns 30, two cast-in-place beams 15, and two erection beams 12 together," while the latter "sandwiches two steel pipe columns 30, two cast-in-place beams 15, and one erection beam 12 together." (c) In the panel zone block 20, the type of connecting steel material contained in the cast-in-place beam 15 is either a "rebar connecting type" as shown in Example 1 or a "steel frame connecting type" as shown in Example 2 (see also Figures 4 and 14). G) The panel zone block 20 has a "one case" as shown in Examples 1 and 2, and a "two case" as shown in Example 3, in terms of the number of panel zones to be integrated (see also Figs. 4, 14, and 16). Example 3 is a "half precast beam integrated type" in which two panel zones and their narrow half precast beam sections 23 are precast together, and is also a "rebar joint type."

[0048] FIG. 3 shows details of the steel pipe pole (corner portion) 30 (32) common to Examples 1 to 3. The D-D' cross section shows a plan view, and the E-E' cross section and the F-F' cross section show the side views as seen by the arrows. The features of the steel pipe pole 30 (32) are described below in K) to K) with reference to FIG. 3. (h) The steel pipe column 30 has flange plates (end portions) 37 at both the upper and lower ends of its side surface, a flange plate (lower part of the bracket) 38 below the upper flange plate (end portion) 37, and a flange plate (central portion) 39 at the central portion. i) The upper and lower flange plates (end portions) 37 at both ends and the central flange plate (central portion) 39 each have fixing holes 74 for fixing to the panel zone block 20 and the horizontal tie beam 13. (c) The upper flange plate (end portion) 37 and the lower flange plate (lower portion of the bracket) 38 are welded together with the bracket 36 sandwiched between them, and the bracket 36 has fixing holes 74 on its upper surface for fixing the erection beam 12. (c) The steel pipe column 30 places the erection beam 12 on a bracket 36 provided near its upper end, and fixes it with bolts and nuts 71 through the fixing holes 74 at the ends of the erection beam 12 and the fixing holes 74 in the bracket that communicate with them (see also Figure 13).

[0049] Next, for Examples 1 to 3, "A. Structural details of the panel zone block" and "B. Process of constructing the frame" which is the fourth aspect of the present invention will be described with reference to Figs. 4 to 16.

[0050] [Example 1] A1. Panel Zone Block Structure Details (Example 1) Fig. 4 is a structural diagram of the panel zone block of Example 1, with the A-A' cross section being a plan view, and the B-B' and C-C' cross sections being side views as viewed from the arrows. Fig. 5 is an enlarged view of part c in Fig. 4. The panel zone block 20 (21) of Example 1 is a "rebar joint type" in terms of the type of joint steel material, and is located at a "corner portion". The structural details of the panel zone block of Example 1 will be explained in S) to S) with reference to Figs. 4 and 5.

[0051] (c) It has an air vent hole 62 penetrating vertically approximately in the center, and an umbrella-shaped inclined surface 63 on its underside that slopes downward from the air vent hole 62 to the periphery on the center. S) The first steel bar 49 is inserted vertically into the rod 49 and protrudes from its own upper and lower smooth surfaces 31, and the first steel bar 49 is inserted into the fixing holes 74 of the flange plates (ends) 37 of the upper and lower steel pipe columns 30 that face its own upper and lower surfaces, and the upper and lower steel pipe columns 30 are fixed in close contact with their own upper and lower smooth surfaces 31 (see FIG. 5) (see also the enlarged view of part q6 in FIG. 7 and the enlarged view of part q12 in FIG. 13). (c) The second steel bar 50 is placed horizontally inside and protrudes from the smooth surface of the side surface on the outer periphery 17 side of itself, and the second steel bar 50 is inserted into the fixing hole 74 at the end of the construction beam 12 facing that side surface, thereby fixing the construction beam 12 in close contact with the smooth surface of its side surface (see also Figure 7). o) When fixing the first steel bar 49 or the second steel bar 50, a cap nut may be provided at the end and a bolt may be inserted into each fixing hole 74 to fix them (not shown).

[0052] (a) The panel zone block 20 has a first reinforcing bar 45 inside so that it can be used as a gap to horizontally connect to the beam reinforcing bar 41 that is enclosed in the hoop reinforcing bar 75 inside the cast-in-place beam 15 (see also the enlarged view of part q6 in Figure 7). h) The panel zone block 20 has a second reinforcing bar 46 inside in order to connect vertically to the column reinforcing bar 42 enclosed in the hoop reinforcement 75 located on the inner circumferential surface of the upper and lower steel pipe columns 30 that are filled with the high-flow concrete 65. However, if there is no problem with transportation, the second reinforcing bar 46 itself may be extended to include the column reinforcing bar 42 (also see the enlarged view of part q10 in FIG. 11). tsu) The panel zone block 20 has mechanical joints 51 at the ends of the first reinforcing bar 45 and the second reinforcing bar 46, and is joined to the beam reinforcing bar 41 and the column reinforcing bar 42 (see also the enlarged view of part q6 in Figure 7 and the enlarged view of part q10 in Figure 11).

[0053] As described above in (1) to (2), "A1. Detailed Structure of Panel Zone Block (Example 1)" " This can achieve the following effects 10) to 11).

[0054] 10) In the conventional construction of a frame consisting of cast-in-place RC beams and CFT columns, the end joints and H-shaped steel beams inherent in the cast-in-place beams hindered compaction, air escape, and bleeding when pouring the concrete for the cast-in-place beams, resulting in structural weaknesses (see Figure 1 in Patent Document 4). However, if the cast-in-place RC beams 15 that are continuous on the left and right sides of the panel zone block 20 only have the beam reinforcing bars 41 inside, end joints and H-shaped steel are not necessary, and compaction, air release, and bleeding are ensured, so no structural weaknesses occur (see also Figures 10 and 11).

[0055] 11) The panel zone block 20 is provided with a first steel bar 49 and a smooth surface 31 for connecting to the first steel bar 49 to securely fasten the upper and lower steel pipe columns 30. Therefore, the construction of the column and beam framework 11 is not synchronized with the construction of each layer of the beams and floors of the cast-in-place RC structure, so construction can be carried out quickly.

[0056] B1. Process for constructing the structure (Example 1) Next, "B1. Process of constructing a frame (Example 1)" will be described with reference to Fig. 6 to Fig. 13. The process of constructing a frame includes the following steps. First step: Fixing the panel zone block 20 to the leading part 30 (34) of the steel pipe column and connecting the beam reinforcing bar 41 - Second step: Filling 65% of high-flow concrete into the leading portion 34 of the steel pipe column - The third step: pouring concrete 64 into the cast-in-place beam 15 and connecting the column reinforcing bars 42 Fourth step: Fixing the rear part 30 (35) of the steel pipe column to the panel zone block 20 and fixing the horizontal tie beam 13 and the erection beam 12

[0057] B1-1. First step (Example 1) The first step (Example 1) will be described below with reference to Figs. 6 and 7. Fig. 6 is a structural drawing showing the state of the first step of Example 1, and Fig. 7 is a detailed drawing thereof, showing the state before the step on the left side of the arrow and the state after the step on the right side. Fig. 7 also shows an enlarged view of parts q6 and p6 in Fig. 6.

[0058] (e) The panel zone block 20 is placed on and fixed to the leading portion 34 of the steel pipe column, which is fixed at a predetermined position on each side by the erection beams 12 and the horizontal tie beams 13, using a first steel bar 49. g) The panel zone blocks 20 are joined horizontally to the beam reinforcing bars 41 with the first reinforcing bars 45, with the panel zone blocks 20 spaced apart. Note that formwork supports 69 that are preassembled on the cross members 14 that connect the two rows of horizontal tie beams 13 in a transverse direction may be used as scaffolding. (a) The horizontal tie beams 13 are arranged in two rows with a steel pipe column 30 in between, and the two rows of horizontal tie beams 13 are connected in a ladder-like manner by cross members 14.

[0059] As described above in 1) to 1), "B1-1. First step (Example 1)" can provide the following effects 12) to 14).

[0060] 12) The panel zone block 20 is fixed by placing it on the leading portion 34 of the steel pipe column, which is fixed at a predetermined position on each side by the erection beam 12 and the horizontal tie beam 13, with the first steel bar 49. Since the position of the frame itself is fixed, the panel zone block 20 can be stably fixed.

[0061] 13) The horizontal tie beams 13 are arranged in two rows with a steel pipe column 30 in between, and the two rows of horizontal tie beams 13 are connected in a ladder shape with cross members 14. This makes it possible to stably hold the "panel zone block 20 fixed to the leading portion 34 of the steel pipe column."

[0062] 14) The top surfaces of the panel zone blocks 20 and the cast-in-place beams 15 are the finished surfaces, and the top surfaces of the erection beams 12 are located lower than the finished surfaces by the floor thickness so that they can be in close contact with the cast-in-place floor 16. This allows the construction of the frame itself and the erection beams to be postponed, allowing for rapid construction (see also Figure 2).

[0063] B1-2. Second step (Example 1) The second step (Example 1) will be described in iv) to j) with reference to Fig. 8 and Fig. 9. Fig. 8 is a structural drawing showing the state of the second step of Example 1, and Fig. 9 is a detailed drawing thereof, showing the state before the step on the left side of the arrow and the state after the step on the right side. Fig. 9 also shows an enlarged view of parts q8 and p8 in Fig. 8.

[0064] d) High-flow concrete 65 is filled into the leading portion 34 of the steel pipe column through the filling hole 66 of the panel zone block 20, and the air 61 inside the steel pipe column 30 is pushed up from the umbrella-shaped inclined surface 63 of the panel zone block 20 to the air vent hole 62 to be integrated. (j) The filling hole 66 is arranged at the base of the steel pipe column 30, and filling is performed from the bottom to the top of the steel pipe column 30.

[0065] As described above in d) to j), "B1-2. Second step (Example 1)" can provide the following effects 15) to 17).

[0066] 15) The inside of the steel pipe column 30 fixed below the panel zone block 20 is filled with high-flow concrete 65 by pushing air up from the umbrella-shaped inclined surface 63 to the air vent hole 62. In this way, the panel zone block 20 and the steel pipe column 30 can be tightly integrated without causing air pockets (see Figures 4, 5, and 9).

[0067] 16) There are no obstacles above the panel zone block 20 other than the second reinforcing bar 46. Therefore, when the high-flow concrete 65 is filled inside the steel pipe column 30, the completion of filling can be reliably confirmed by checking the air vent hole 62 on the upper surface of the panel zone block 20.

[0068] 17) The filling hole 66 is arranged at the base of the steel pipe column 30, and the steel pipe column 30 is filled from the bottom to the top. In this way, the aggregate of the concrete 65 inside the steel pipe column does not separate, and can be filled uniformly.

[0069] B1-3. Third step (Example 1) The third step (Example 1) will be described in (c) to (d) with reference to Fig. 10 and Fig. 11. Fig. 10 is a structural drawing showing the state of the third step of Example 1, and Fig. 11 is a detailed drawing thereof, with the left side of the arrow showing the state before and the right side showing the state after. Fig. 11 also shows an enlarged view of parts q10 and p10 in Fig. 10.

[0070] (x) Formwork supports 69 are installed on the cross members 14, and formwork 68 is attached to the beam reinforcing bars 41. The horizontal tie beams 13 themselves, which receive the cross members 14, are supported by reinforcing supports 70. (n) The formwork 68 of the cast-in-place beam 15 is fitted along the projection 24 of the cast-in-place beam joint of the panel zone block 20 and fixed thereto. c) Concrete 64 is poured through concrete pipes 67 into the cast-in-place beams 15 to integrate the panel zone blocks 20. When the concrete hardens and attains a predetermined strength, the formwork 68 is removed and the formwork supports 69, etc. are dismantled in sequence.

[0071] As explained above in (c) to (d), "B1-3. Third step (Example 1)" can achieve the following effects 18) to 20).

[0072] 18) The horizontal tie beams 13 are arranged in two rows with steel pipe columns 30 in between, and the two rows of horizontal tie beams 13 are connected in a ladder shape by cross members 14. The horizontal tie beams 13 themselves are supported by reinforcing supports 70. In this way, the formwork 68 and formwork supports 69 can be stably held by the cross members 14.

[0073] 19) The formwork 68 of the cast-in-place beam 15 is attached while being fixed along the projection 24 of the cast-in-place beam joint of the panel zone block 20. This allows easy and accurate assembly (also see FIG. 4).

[0074] 20) In the third step, the cast-in-place beams 15 may be constructed separately from the cast-in-place floors 16 in advance, or may be constructed integrally with the cast-in-place floors 16. If the beams 15 are constructed separately from the cast-in-place floors 16 in advance, and then the cast-in-place floors 16 of the multi-story floors are constructed together, the entire structure can be constructed quickly (see also Figure 2).

[0075] B1-4. Fourth step (Example 1) The fourth step (Example 1) will be described in (h) to (f) with reference to Fig. 12 and Fig. 13. Fig. 12 is a structural drawing showing the state of the fourth step of Example 1, and Fig. 13 is a detailed drawing thereof, with the left side of the arrow showing the state before and the right side showing the state after. Fig. 13 also shows an enlarged view of part q12 in Fig. 12.

[0076] (h) The steel pipe column 30 is placed on and fixed to the panel zone block 20 by the first steel bar 49. (f) At least two or more steel pipe columns 30 on each side are fixed in predetermined positions by horizontal tie beams 13 and erection beams 12. (f) The steel pipe column 30 places the erection beam 12 on a bracket 36 provided near its upper end, and fixes it with bolts and nuts 71 through the fixing holes 74 at the end of the erection beam 12 and the fixing holes 74 of the bracket 36 that communicate with it.

[0077] As described above in H) to F), "B1-4. The fourth step (Example 1)" can provide the following effects 21) to 22).

[0078] 21) At least two or more steel pipe columns 30 on each side are fixed in predetermined positions by the horizontal tie beams 13 and the erection beams 12. Then, by connecting almost all of the remaining steel pipe columns 30 on each side with the horizontal tie beams 13, the steel pipe columns 30 on each side can be fixed efficiently and accurately.

[0079] 22) The first steel bar 49 is inserted into the holes in the flange plates (ends) 37 of the steel pipe columns 30 that face each other vertically across the panel zone block 20, and is fixed to its end by a screw portion provided therein and a nut 72, or by a cap nut (not shown) provided therein and a bolt. In this way, the steel pipe column 30 can be precisely and firmly fixed to the panel zone block 20 from above and below.

[0080] [Example 2] A2. Panel Zone Block Structure Details (Example 2) FIG. 14 is a structural diagram of the panel zone block of Example 2, where the A-A' section is a plan view, and the B-B' and C-C' sections are side views as viewed from the arrows. The panel zone block 20 (21, 25) of Example 2 is a "steel frame joint type" in terms of the type of joint steel, and is located at a "corner section". Example 1 and Example 2 differ in that Example 1 is a "rebar joint type" while Example 2 is a "steel frame joint type", and otherwise share the same structural details. The structural details of L) to R) explained in Example 1 are also shared by Example 2, so they will be omitted. Therefore, the structural details of the panel zone block 20 (21, 25) of Example 2, which differ from Example 1, will be explained in E) to M) with reference to FIG. 14.

[0081] e) The panel zone block 20 (21, 25) has a first steel frame 47 inside so that it can be horizontally connected to the beam steel frame 43 that is surrounded by the hoop reinforcement 75 inside the cast-in-place beam 15 (see also Figure 15). (m) The panel zone block 20 (21, 25) contains a vertical second steel frame 48 located on the inner surface of the upper and lower steel pipe columns that are filled with high-flow concrete 65 (see also Figure 15). (m) The panel zone block 20 (21, 25) is joined to the beam steel frame 43 by attaching a splice plate 52 to the end of the first steel frame 47 (see also FIG. 15).

[0082] As explained above in E) to M), "A2. Details of the Structure of the Panel Zone Block (Example 2)" " This can achieve the following effects 23) to 24).

[0083] 23) The cast-in-place beam 15 is an SRC structure having a steel beam 43 enclosed in a hoop reinforcement 75. Therefore, it has higher rigidity than the RC structure of Example 1.

[0084] 24) The panel zone block 20 (21, 25) has a vertical second steel frame 48 located on the inner peripheral surface of the upper and lower steel pipe columns. Therefore, when the panel zone block 20 (21, 25) is fixed to the leading portion 34 of the steel pipe column by inserting the second steel frame 48, the second steel frame 48 does not deform or break even if it comes into contact with the leading portion 34 of the steel pipe column. The same effect is also obtained when the trailing portion 35 of the steel pipe column is fixed to the panel zone block 20 (21, 25) by inserting the second steel frame 48.

[0085] B2. Process for constructing the frame (Example 2) B2-2. Second step (Example 2) The second step of Example 2 is shown for reference in Fig. 15, which corresponds to Fig. 9 of Example 1. Note that Example 1 and Example 2 differ in that Example 1 is a "rebar joint type" while Example 2 is a "steel frame joint type", but otherwise share the same structural details, the steps of constructing the frame are almost the same, and the effects obtained are also similar, so the description of these will be omitted.

[0086] [Example 3] A3. Panel Zone Block Structure Details (Example 3) 16 is a structural diagram of the panel zone block of Example 3, where the A-A' section is a plan view, and the B-B' and C-C' sections are side views as viewed from the arrows. Similarly to Example 1, the panel zone block 20 (21, 26) of Example 3 is a "rebar joint type" in terms of the type of joint steel material, and is located at the "corner portion." Example 1 and Example 3 differ in the number of integrated panel zones, with Example 1 being "one case" and Example 3 being "two cases," with the two panel zones and their narrow spaces being integrally precast as half precast beams; otherwise, they share the same structural details. The structural details L) to L) explained in Example 1 are also shared by Example 3, so they will be omitted here. Therefore, the structural details of the panel zone block 20 (21, 26) of Example 3, which differ from Example 1, will be explained in M) to M) with reference to Figure 16.

[0087] (m) The panel zone block 20 (21, 26), which precasts two panel zones and their narrow ends together as a half precast beam section 23, has a first reinforcing bar 45 contained within the two panel zones to form a narrow end and join horizontally to the beam reinforcing bar 41 that is enclosed in the hoop reinforcement 75 contained in the cast-in-place beam 15. (e) The panel zone block 20 (21, 26), which precasts the two panel zones and their narrow ends together as a half-precast beam section 23, has a second reinforcing bar 46 embedded within each of the two panel zones in order to connect vertically to the column reinforcing bar 42 enclosed within the hoop reinforcement 75 located on the inner surface of the steel pipe column that is filled with high-flow concrete. Mo) The panel zone block 20 (21, 26) has mechanical joints 51 at the ends of the first reinforcing bar 45 and the second reinforcing bar 46, and is joined to the beam reinforcing bar 41 and the column reinforcing bar 42.

[0088] As explained above in (m) to (m), "A3. Details of the Structure of the Panel Zone Block (Example 3)" " This can achieve the following effects 25) to 26).

[0089] 25) The panel zone block 20 (26) is precast integral with the two panel zones and the narrow half precast beam section 23. This configuration allows the precast section to be divided into the most optimal sections for the lifting conditions, realizing rapid construction.

[0090] 26) The half precast beams 23 and the cast-in-place beams 15 may be constructed separately from the cast-in-place floor 16 in advance, or may be constructed integrally with the cast-in-place floor 16. If they are constructed separately from the cast-in-place floor 16 in advance, and then the cast-in-place floors 16 of the multi-story floors are constructed together, construction can be carried out more quickly (see also Figure 2).

[0091] In the above, "A. Structural details of the panel zone block" and "B. Process of constructing the frame" of each of the examples 1, 2, and 3 have been explained with reference to Figs. 4 to 16. With the above-mentioned configuration, the present invention can achieve the following overall effects 27) to 28).

[0092] 27) In the present invention, the precast panel zone block 20 sandwiches post-filled steel pipe columns 30 above and below and cast-in-place RC beams horizontally in a series between itself based on the load-bearing capacity of the cross-sectional forces (see Figures 1 and 2). For this reason, the present invention provides a structure consisting of cast-in-place beams and CFT columns, which has excellent weather resistance and workability, as well as excellent earthquake resistance and sound insulation, and which allows for rapid construction, and a method for constructing a tubular structure.

[0093] 28) The type of joining steel material and the number of panel zones to be integrated in the panel zone block 20 of the present invention are not limited to the above-mentioned embodiment, and can be changed at any time according to design needs. The framework and the method of constructing the framework of the present invention can be applied not only to multi-story buildings on the ground, but also to multi-story buildings for parking and ventilation purposes inside underground shafts. [Explanation of symbols]

[0094] 11 Frame, 12 Construction beam, 13 Cross beam, 14 Cross member, 15 Cast-in-place beam, 16 Cast-in-place floor, 17 Perimeter, 20 Panel zone block, 21 Panel zone block (corner section), 22 Panel zone block (non-corner section), 23 Half precast beam section, 24 Projection of on-site beam joint, 25 Panel zone block (steel frame joint type), 26 Panel zone block (half precast beam integrated type), 30 Steel pipe column, 31 Smooth surface, 32 Steel pipe column (corner part), 33 Steel pipe column (non-corner part), 34 Leading steel pipe column, 35 Trailing steel pipe column, 36 Bracket, 37 flange plate (end portion), 38 flange plate (lower portion of bracket), 39 Flange plate (center), 41 Beam reinforcement, 42 Column reinforcement, 43 Beam steel frame, 45 First reinforcing bar (for beam reinforcing bar), 46 Second reinforcing bar (for column reinforcing bar), 47 First steel frame (for beam steel frame), 48 Second steel frame (for column steel frame), 49 First steel bar (for steel pipe column), 50 Second steel bar (for erection beam), 51 Mechanical joint, 52 splice plate, 61 internal air, 62 air vent hole, 63 umbrella-shaped inclined surface, 64 Concrete, 65 High-flow concrete, 66 Filling hole, 67 Concrete piping, 68 Formwork, 69 Formwork support, 70 Reinforcement support, 71 bolt nut, 72 nut, 74 fixing hole, 75 hoop reinforcement

Claims

1. In the framework of a multi-story building, The frame is composed of at least a precast panel zone block, a steel pipe column having flange plates at both the upper and lower ends, and a cast-in-place beam having a beam reinforcing bar or a beam steel frame horizontally embedded therein, the beam reinforcing bar being surrounded by a hoop reinforcement. The panel zone block has a first reinforcing bar or a first steel frame for horizontally connecting to the beam reinforcing bar or the beam steel frame, respectively, and a first steel bar for fixing the steel pipe column vertically. A structure characterized by:

2. The structure according to claim 1, The panel zone block has an air vent hole penetrating vertically at the approximate center thereof, and an umbrella-shaped inclined surface on the lower surface thereof that slopes downward from the air vent hole toward the periphery. A structure characterized by:

3. The structure according to claim 2, The steel pipe column and the panel zone block are integrated by fixing the panel zone block to the fixing hole of the flange plate at the upper end of the steel pipe column with the first steel bar, filling the steel pipe column with concrete, and pushing the air inside the steel pipe column up from the umbrella-shaped inclined surface to the air vent hole. A structure characterized by:

4. The structure according to claim 1, The frame has a generally rectangular shape in plan view and a tubular shape in three dimensions, At least two or more of the steel pipe columns arranged on any one side of the approximately rectangular shape are provided with a horizontal connecting beam that fixes them to each other in the direction of the one side, and an erection beam that is fixed perpendicular to the direction of the one side and horizontally in the vicinity of its upper end, The steel pipe column and the panel zone block are fixed by connecting the first steel bar to the fixing hole of the flange plate at the upper end of the steel pipe column. A structure characterized by:

5. A method for constructing a structure using the structure according to claim 3 and the structure according to claim 4, A first step of placing the panel zone block on the leading portion of the steel pipe column fixed at a predetermined position for each side by the erection beam and the horizontal tie beam with the first steel bar and fixing it, and further, horizontally joining the panel zone blocks to the beam reinforcing bar or the beam steel frame with the first reinforcing bar or the first steel frame, respectively, with the panel zone block between them; A second step of filling the panel zone block with concrete in the leading portion of the steel pipe column to push the air inside the steel pipe column up from the umbrella-shaped inclined surface of the panel zone block to the air vent hole to integrate the panel zone block; A third step of assembling the panel zone blocks joined to the beam reinforcing bar or the beam steel frame in the first step, and integrating the panel zone blocks by pouring concrete into the beam reinforcing bar or the beam steel frame, and A fourth step of loading and fixing the trailing part of the steel pipe column to the panel zone block by the first steel bar, and fixing each side at a predetermined position by the new erection beam and the horizontal tie beam; A method for constructing a structure having the above structure.

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