Frame and frame construction method

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 containing 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] Nowadays, tubular frames are often used in multi-story buildings, with the frame structure being placed at the center. The history of tubular frames is long, with the first being the David Chestnut Apartments, a 43-story reinforced concrete building constructed in Chicago in 1966. In Japan, the first such structure was the World Trade Center Building (38 floors, 152m) in Hamamatsucho, Tokyo, completed in 1970, followed by the Shinjuku Sumitomo Building (52 floors, 212m) and the Yokohama MM21 Landmark Tower (73 floors, 296m). Currently, the frames of most high-rise, multi-story buildings are made using tubular frames.

[0003] The tubular frame placed in the center of the multi-story building is composed of the "beams and columns that make up the frame itself" and "erecting beams that are erected perpendicularly and horizontally from the frame to the periphery." This allows for the elevator and machine room to be located in the center of the tubular frame, with living space on the periphery, resulting in a multi-story building with excellent structural rationality, a high degree of design freedom, and effective use of interior space. Furthermore, compared to a simple rigid frame, a tubular frame 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 instead of steel (hereafter referred to as "S"). Reinforced concrete and reinforced concrete structures are heavy and highly rigid, and can also have excellent earthquake resistance and sound insulation.

[0005] Recently, most tubular structures are made of reinforced concrete rather than SRC. The reason for this is that compared to SRC, RC construction is easier and cheaper to design and construct thanks to the practical application of high-strength concrete and high-strength rebar, the development of methods for joining RC columns and RC beams that have excellent deformation performance, advances in analytical technology and computer performance, and advances in precast technology.

[0006] Recently, there has been an increase in the use of tubular structures made of reinforced concrete beams and CFT columns, which are heavy, highly rigid, and have excellent earthquake resistance and sound insulation properties. 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. RC beams also have the advantage of reducing noise and vibration, and being able to inexpensively increase the earthquake resistance of the entire tubular frame. In addition, CFT columns have the advantage that the steel pipes are lightweight when erected and can be filled with concrete all at once after erection, making construction simple and quick, and there are no restrictions on the height of a single pour, eliminating the concern about cracks caused by temperature stress.

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

[0008] Patent Document 2 describes a panel zone block technology for a frame consisting of reinforced concrete beams and steel pipe concrete columns. The core reinforcing bars protruding from the bottom end of the steel pipe concrete column are inserted and fixed into a splice sleeve on the top surface of the panel zone block (see

[0013] of Patent Document 2). Then, by precasting the panel zone that sandwiches the steel pipe concrete column from above and below and horizontally joins the reinforced concrete beam, the complicated work of the panel zone and joints is streamlined (see Figure 1 of Patent Document 2).

[0009] The technology shown in Figure 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 through each floor (see Figure 3 of Patent Document 3).

[0010] The technology disclosed in Patent Document 4 is a joining structure technology for a frame consisting of RC beams 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] Japanese Patent Application Laid-Open No. 2011-69148 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-11103 [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 technology 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 cylindrical sealing steel plate, and the steel beam penetrates through the sealing steel plate (see Figure 2 of Patent Document 1). Therefore, 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 route for carbon dioxide and moisture in the air to enter the panel zone, inducing corrosion of the internal steel bars. In the other case, the "joint between the RC column and the steel beam" has the end of the steel beam covered with reinforced concrete, and the reinforced concrete covering is tension-fixed to the RC column with prestressing steel (see Figure 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 inside of the RC, inducing corrosion of the internal steel bars.

[0013] The technology disclosed in Patent Document 1 has the following problems in terms of workability. - Construction of the joints on each floor requires tedious manual work at each location due to the structure, so the necessary work foundation is required once the construction of the reinforced concrete floors on each floor is completed. This means that the overall construction period will be affected by the progress of each layer of cast-in-place reinforced concrete floors, resulting in delays in the process.

[0014] Furthermore, the technology 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] of Patent Document 2). In this case, the steel plates form a continuous steel interface 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, which induces corrosion of the internal reinforcing bars (see Figure 1 of Patent Document 2). In short, the method of sandwiching the panel zone block between the upper and lower steel pipe concrete columns does not allow the column rebar or steel frame to be placed inside the upper and lower steel pipe concrete columns in the panel zone. This means that the reinforcing steel plates that act as shear reinforcement cannot be eliminated, and the problem of 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 technology disclosed in Patent Document 2 has the following problems in terms of workability. - Steel pipe 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. - The installation of heavy panel zone blocks on unsecured, upright steel pipe concrete columns is unstable, dangerous, and construction precision cannot be ensured.

[0016] Furthermore, the technique disclosed in Patent Document 3 and shown in FIG. 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 reinforced concrete, and act as a route for carbon dioxide and moisture in the air to enter the reinforced concrete, 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 floor is complicated.

[0018] Furthermore, the technology 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 serve as a route for carbon dioxide and moisture in the air to enter the RC, thereby inducing corrosion of the internal rebar.

[0019] The technology disclosed in Patent Document 4 has the following problems in terms of workability. The H-shaped steel beams embedded in RC beams hinder compaction, air escape, and bleeding during concrete pouring, creating structural weaknesses. Non-breathing high-flow concrete, which improves this, is costly. - The work of joining the beam reinforcing bars to the end joints and H-shaped steel beams on each floor is complicated.

[0020] The above has explained the issues regarding weather resistance and workability of the structures of multi-story buildings with built-in frames in Patent Documents 1 to 4. These issues are summarized in 1) to 3) below.

[0021] 1) Conventionally, in the panel zone of a frame, when beams and columns are a combination of reinforced concrete and steel, steel and reinforced concrete, or a combination of cast-in-place reinforced concrete or SRC beams and CFT columns, the steel frame connecting the steel frame to the reinforced concrete structure inevitably leads to a continuity of the diaphragms, reinforcing steel plates, and steel frame materials that make up the columns and beams from the outside into the reinforced concrete. This steel interface acts as 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, when beams and columns in the panel zone of a frame 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, after securing the necessary work base, columns and beams are constructed in sync with the construction of each layer of cast-in-place RC beams or floors, which delays the process.

[0023] 3) Conventionally, when combining cast-in-place RC beams and CFT columns in the panel zone of a frame, as in the technology of Patent Document 4, it is sufficient to attach H-shaped steel beams embedded in the beam reinforcing bars of the cast-in-place RC beams to the end joints integral with the steel pipe columns that form the panel zone. However, when doing so, the H-shaped steel embedded in the cast-in-place beams inhibits compaction, air escape, and bleeding during the concrete pouring of the cast-in-place beams, creating a structural weakness. Furthermore, non-breathing high-flow concrete, which solves this problem, is costly (see Figure 1 of Patent Document 4).

[0024] 4) Conventional frames made of RC beams and CFT columns 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 has caused problems with weather resistance due to corrosion of the internal rebar (see Figure 3 of Patent Document 3 and Figure 6 of Patent Document 4).No precast structure or construction method has been found that would solve this problem, in which CFT columns are separated by RC beams rather than being 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 separated by RC beams rather than being continuous from top to bottom, is the main issue that this invention aims to solve. [Means for solving the problem]

[0026] In order to solve the above problem, the first means according to the present invention is In the framework inherent in multi-story buildings, 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 and surrounded by a hoop reinforcement; The panel zone block has a gap therebetween and contains 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] A second aspect of the present invention is a frame structure of the first aspect, The panel zone block has an air vent hole that penetrates vertically at approximately the center thereof, and an umbrella-shaped inclined surface on its underside that slopes downward from the air vent hole to the periphery thereof.

[0028] A third aspect of the present invention is a frame structure according to 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 using 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] A fourth aspect of the present invention is a frame 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 rectangle 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 in the vicinity of its upper end in a direction perpendicular to the direction of the one side and horizontally, The present invention provides a frame structure, characterized in that the steel pipe column and the panel zone block are fixed by passing the first steel bar through the fixing hole of 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 frame using the frame of the third aspect and the frame of the fourth aspect, comprising: A first step of placing and fixing the panel zone block on the preceding portion of the steel pipe column fixed at a predetermined position for each side by the erection beam and the horizontal tie beam using the first steel bar, and further connecting the panel zone blocks to each other horizontally with the first steel bar or the first steel frame, with the panel zone block sandwiched between them; A second step of filling the panel zone block with concrete in the preceding 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, thereby integrating the panel zone block; A third step of assembling the panel zone blocks joined to the beam reinforcing bars or the beam steel frame in the first step with formwork and formwork supports attached to the beam reinforcing bars or the beam steel frame and pouring concrete to integrate them; A method for constructing a frame is provided, 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 the new erection beam and the horizontal tie beam. [Effects of the Invention]

[0031] The following effects 1) to 6) can be achieved with respect to the following content of the first aspect of the present invention (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 beam reinforcing bars 41 or beam steel frames 43 horizontally embedded therein and externally wrapped in hoop reinforcement 75. The panel zone block 20 has a first reinforcing bar 45 or a first steel frame 47 formed therein for horizontally joining the beam reinforcing bar 41 or the beam steel frame 43, respectively, and a first steel bar 49 for fixing the steel pipe column 30 at the top and bottom.

[0032] 1) In the panel zone of a conventional RC or SRC frame consisting of cast-in-place beams and CFT columns, the steel penetrates from the steel pipe side to the reinforcing bars inside the cast-in-place beams, so the steel interface is continuous from the outside to the inside of the RC, which becomes a supply path for deterioration factors and corrodes the internal reinforcing bars (see Figure 1 of Patent Document 4). However, the vertically continuous 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 run horizontally sandwich the panel zone block 20 between them and do not contain any steel other than the beam reinforcing bars 41 or beam steel frames 43, so the steel interface does not continue from the outside into 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 corresponding position in 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, construction of joints on each floor, including the combination of cast-in-place RC or SRC beams and CFT columns, requires tedious manual work. For this reason, construction of joints is synchronized with the construction of each floor and cast-in-place beam, after securing the necessary work base, which causes delays in the process. However, in the panel zone to be precast for reinforced concrete construction, the first steel bar 49 is inserted vertically into the panel zone and protrudes from the smooth surfaces 31 on the upper and lower sides. 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, and the upper and lower steel pipe columns 30 are fixed in close contact with the smooth surfaces 31 on their own top and bottom sides (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 construction of columns is not synchronized with the construction of each layer of cast-in-place reinforced concrete beams and floors, allowing for rapid construction.

[0034] 3) Conventionally, panel zone blocks required reinforcing steel plates as shear reinforcement, and because the steel interface was continuous from the outside to the inside of the RC, there were concerns about corrosion of the internal reinforcing bars (see Figures 1 and 2 of Patent Document 2). However, 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 Figures 4 and 14, as well as the enlarged view of part q12 in Figure 13 and the enlarged view of the corresponding position in part q8 in Figure 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 withstanding the cross-sectional force, and there is no steel 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 reinforcing bars 41 that sandwich the panel zone block 20 and face it horizontally and are enclosed by the hoop reinforcement 75 are joined to the first reinforcing bars 45 that are internal to the panel zone block 20 using mechanical joints 51, or the beam steel frame 43 that sandwiches the panel zone block 20 and face it horizontally and are enclosed by the hoop reinforcement 75 is joined to the first steel frame 47 that is internal to the panel zone block 20 using splice plates 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 bars 45 or first steel frame 47 are integrated with the beam reinforcing bars 41 or beam steel frame 43, respectively, and the cast-in-place beams 15 sandwich the panel zone blocks 20 to form a continuous, integrated beam structure while withstanding the cross-sectional force, thereby ensuring the rigidity of the entire frame.

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

[0037] 6) The steel pipe columns 30 can be fixed to 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 is fixed to the steel pipe column 30 by the first steel bars 49, and can be correctly fixed to a predetermined position vertically and horizontally by horizontally joining the first reinforcing bars 45 and the beam reinforcing bars 41 or the first steel frame 47 and the beam steel frame 43 with each panel zone block 20 sandwiched between them (see Figures 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 at approximately the center of the panel zone block 20, and an umbrella-shaped inclined surface 63 on its underside that slopes downward from the air vent hole 62 (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 with the first steel bar 49, and is then filled with concrete to push the air 61 inside the column up through the umbrella-shaped inclined surface 63 to the air vent hole 62, thereby integrating the column (see Figures 4, 5, and 9).

[0039] 7) The interior of the steel pipe column 30 fixed below the panel zone block 20 is filled with high-flow concrete 65 by forcing air up from the umbrella-shaped inclined surface 63 to the air vent hole 62. This allows the panel zone block 20 and the steel pipe column 30 to 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 following content of the third aspect of the present invention. The frame 11 is roughly rectangular in plan view and tubular in three dimensions. At least two or more of the steel pipe columns 30 arranged on one side of the approximate rectangle are provided with horizontal tie beams 13 that secure them to each other in the direction of one side, and erection beams 12 that are fixed near their upper ends horizontally and perpendicular to the direction of one side (see Figures 6 and 7).

[0041] 8) Conventionally, in the case of steel beams, erection beams penetrate the panel zone blocks for rigid connection, which makes the joint structure complicated and the steel beams themselves act as a path for carbon dioxide and moisture in the air to enter the interior, causing corrosion of the internal reinforcing bars (see Figure 2 of 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 Figure 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 sways, 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 with erection beams 12, and all steel pipe columns 30 on that side are connected with horizontal tie beams 13 (see Figure 6). In this way, none of the steel pipe columns 30 sways anymore, and they can all be fixed in their designated positions (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 explanation of the drawings]

[0044] [Figure 1] FIG. 1 is an overall view of a multi-story building common to Examples 1 to 3. [Figure 2] FIG. 2 is a completed view of the tubular frame common to the first to third embodiments. [Figure 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. [Figure 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 view of the first step of the first embodiment. [Figure 8] FIG. 8 is a structural view of the second step of the first embodiment. [Figure 9] FIG. 9 is a detailed view of the second step of the first embodiment. [Figure 10] FIG. 10 is a structural view of the third step of the first embodiment. [Figure 11] FIG. 11 is a detailed view 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 view of the fourth step of the first embodiment. [Figure 14] FIG. 14 is a diagram showing the structure of a panel zone block 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 the structure of a panel zone block according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[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. The effects of A) to K) will be included in the effects of each embodiment and will be described later, and will not be described here.

[0046] Figure 1 is an overall view of the 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 features of the multi-story building will be explained below in A) to C) with reference to Figure 1. A) In the center is a frame 11 that is roughly rectangular in plan view and tubular in three dimensions. (i) The frame 11 is composed of a panel zone block 20, a CFT column with concrete filled in a steel pipe column 30, and a cast-in-place beam 15, and an erection beam 12 is erected perpendicularly and horizontally from the frame 11 toward the outer periphery 17. (c) Precast panel zone blocks 20 are placed at the joints of the upper and lower steel pipe columns 30, the horizontally opposing cast-in-place beams 15, and the erection beams 12 that extend perpendicularly and horizontally from the frame 11 toward the 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, showing an enlarged view of parts a and b in Fig. 1. The features of the frame 11 will be explained in the following sections D) to G) with reference to Fig. 2. (e) Panel zone blocks 20 and steel pipe columns 30 are general terms for each type, and their shapes are determined by whether or not they are located at the corners of the approximately rectangular sides of the frame 11. Panel zone blocks 20 include panel zone block (corner portion) 21 and panel zone block (non-corner portion) 22, and steel pipe columns 30 include steel pipe column (corner portion) 32 and steel pipe column (non-corner portion) 33, and each has a different shape (see Figures 2 and 6 together). (o) The structural features of the corner and non-corner parts of the panel zone block 20 and steel pipe column 30 differ in that the former "sandwiches and connects two steel pipe columns 30, two cast-in-place beams 15, and two erected beams 12," while the latter "sandwiches and connects two steel pipe columns 30, two cast-in-place beams 15, and one erected beam 12." (c) The panel zone block 20 has two types of connecting steel material contained in the cast-in-place beam 15: the "rebar connecting type" shown in Example 1 and the "steel frame connecting type" shown in Example 2 (see also Figures 4 and 14). (g) The panel zone block 20 has two integrated panel zones: one case as shown in Examples 1 and 2, and two cases as shown in Example 3 (see also Figures 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 side views as seen from the arrows. The features of the steel pipe pole 30 (32) are explained below in sections K) to K) with reference to FIG. 3. (c) The steel pipe column 30 has flange plates (end portions) 37 on both the upper and lower ends of its side surface, a flange plate (lower portion of bracket) 38 below the upper flange plate (end portion) 37, and a flange plate (central portion) 39 in the central portion. i) The flange plates (end portions) 37 at the upper and lower ends and the flange plate (center portion) 39 at the center portion 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) 37 and the lower flange plate (lower part of the bracket) 38 are welded together with the bracket 36 sandwiched between them, and the bracket 36 has a fixing hole 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 for constructing the frame" which is the fourth aspect of the present invention will be explained with reference to Figs.

[0050] [Example 1] A1. Panel Zone Block Structural 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. 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, and is located in a "corner portion." The structural details of the panel zone block of Example 1 will be explained in sections 1) to 2) with reference to FIGS. 4 and 5.

[0051] (c) It has an air vent hole 62 that penetrates vertically at the approximate center of itself, and an umbrella-shaped inclined surface 63 on its underside that slopes downward from the air vent hole 62 to the periphery. S) The first steel bar 49 is inserted vertically into the interior and protrudes from the smooth surfaces 31 on its upper and lower surfaces, and the first steel bar 49 is inserted into the fixing holes 74 of the flange plates (end portions) 37 of the upper and lower steel pipe columns 30 facing the upper and lower surfaces of the first steel bar 49, thereby fixing the upper and lower steel pipe columns 30 in close contact with the smooth surfaces 31 on their upper and lower surfaces (see Figure 5) (also see the enlarged view of part q6 in Figure 7 and the enlarged view of part q12 in Figure 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 erection beam 12 facing its side surface, thereby fixing the erection beam 12 in close contact with the smooth surface of its side surface (see also Figure 7). (r) 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 it to form a gap and connect horizontally 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 it to be connected vertically to the column reinforcing bar 42 enclosed in the hoop reinforcement 75 located on the inner periphery of the upper and lower steel pipe columns 30 that will be filled with high-flow concrete 65. However, if there are no problems with transportation, it is also acceptable to extend the second reinforcing bar 46 itself, including the column reinforcing bar 42 (see also the enlarged view of part q10 in Figure 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 explained above in (1) to (2), "A1. Details of the Structure of the Panel Zone Block (Example 1)" " This can achieve the following effects 10) to 11).

[0054] 10) In the construction of conventional frames using cast-in-place RC beams and CFT columns, the end joints and H-shaped steel beams inherent in the cast-in-place beams hinder compaction, air escape, and bleeding when pouring the concrete for the cast-in-place beams, creating structural weaknesses (see Figure 1 in Patent Document 4). However, if the cast-in-place reinforced concrete beams 15 that run continuously 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 required, and compaction, air release, and breathing are ensured, preventing structural weaknesses (see also Figures 10 and 11).

[0055] 11) The panel zone block 20 is provided with a first steel bar 49 and a mating smooth surface 31 for tightly fixing the upper and lower steel pipe columns 30. Therefore, the construction of the column and beam frame 11 is not synchronized with the construction of each layer of the cast-in-place reinforced concrete beams and floors, allowing for rapid construction.

[0056] B1. Construction process of the frame (Example 1) Next, "B1. Process for constructing a frame (Example 1)" will be explained with reference to Figures 6 to 13. The process for constructing a frame consists of the following steps. First step: Fixing the panel zone block 20 to the leading part 30 (34) of the steel pipe column and joining the beam reinforcing bar 41 Second step: Filling the steel pipe column with high-flow concrete (65%) into the advance section (34%) Third process: pouring concrete 64 into the cast-in-place beam 15 and connecting the column rebar 42 Fourth step: Fixing the subsequent 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 explained in steps 1) to 5) with reference to Figures 6 and 7. Figure 6 is a structural diagram showing the state of the first step of Example 1, and Figure 7 is a detailed view thereof, with the left side of the arrow showing the state before implementation and the right side showing the state after implementation. Figure 7 also shows an enlarged view of parts q6 and p6 in Figure 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 to a predetermined position on each side by the erection beam 12 and the horizontal tie beam 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 may be used as scaffolding, which are pre-assembled on the cross members 14 that connect the two rows of horizontal tie beams 13 in a crosswise direction. (a) 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-like manner by cross members 14.

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

[0060] 12) The panel zone block 20 is placed and fixed by the first steel bar 49 on the leading section 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. In this way, 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 the steel pipe column 30 in between, and the two rows of horizontal tie beams 13 are connected in a ladder-like manner with cross members 14. This allows the "panel zone block 20 fixed to the leading part 34 of the steel pipe column" to be stably held in place.

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

[0063] B1-2. Second step (Example 1) The second step (Example 1) will be explained in d) to j) with reference to Figs. 8 and 9. Fig. 8 is a structural diagram showing the state of the second step of Example 1, and Fig. 9 is a detailed view thereof, with the left side of the arrow showing the state before implementation and the right side showing the state after implementation. 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, thereby integrating the two. (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 explained above in d) to j), "B1-2. Second step (Example 1)" can achieve the following effects 15) to 17).

[0066] 15) The interior of the steel pipe column 30 fixed below the panel zone block 20 is filled with high-flow concrete 65 by forcing air up from the umbrella-shaped inclined surface 63 to the air vent hole 62. This allows the panel zone block 20 and the steel pipe column 30 to 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 top 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 explained in (x) to (iii) with reference to Figs. 10 and 11. Fig. 10 is a structural diagram showing the state of the third step of Example 1, and Fig. 11 is a detailed view thereof, with the left side of the arrow showing the state before implementation and the right side showing the state after implementation. Fig. 11 also shows an enlarged view of parts q10 and p10 in Fig. 10.

[0070] (k) 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 support the cross members 14, are supported by reinforcing supports 70. (n) The formwork 68 for the cast-in-place beam 15 is fitted along and fixed to the projection 24 for connecting the cast-in-place beams of the panel zone block 20. c) Concrete 64 is poured through concrete pipes 67 onto the cast-in-place beams 15 to integrate the panel zone blocks 20. Once the concrete has hardened and attained the required strength, the formwork 68 is removed and the formwork supports 69, etc. are also dismantled one by one.

[0071] As explained above in (e) to (c), "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-like manner by cross members 14. The horizontal tie beams 13 themselves are supported by reinforcing supports 70. In this way, the cross members 14 can stably hold the formwork 68 and formwork supports 69.

[0073] 19) The formwork 68 for the cast-in-place beam 15 is fitted along and fixed to the projection 24 for connecting the cast-in-place beams of the panel zone block 20. This allows for easy and accurate assembly (see also Figure 4).

[0074] 20) In the third step, the cast-in-place beams 15 may be constructed separately from the cast-in-place floors 16, 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, and then the cast-in-place floors 16 of the multiple floors are constructed together, the entire construction can be completed quickly (see also Figure 2).

[0075] B1-4. Fourth step (Example 1) The fourth step (Example 1) will be explained in (h) to (f) with reference to Figs. 12 and 13. Fig. 12 is a structural diagram showing the state of the fourth step of Example 1, and Fig. 13 is a detailed view 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 place by horizontal tie beams 13 and erection beams 12. (e) 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 at 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 explained above in H) to F), "B1-4. Fourth step (Example 1)" can achieve 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 horizontal tie beams 13 and 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 by providing a threaded portion at its end and fastening it with a nut 72, or by providing a cap nut (not shown) and fastening it with a bolt. In this way, the steel pipe column 30 can be precisely and firmly fixed above and below the panel zone block 20 by sandwiching it between them.

[0080] [Example 2] A2. Panel Zone Block Structural Details (Example 2) FIG. 14 is a structural diagram of the panel zone block of Example 2, with the A-A' cross section showing a plan view, and the B-B' and C-C' cross sections showing side views. The panel zone block 20 (21, 25) of Example 2 is a "steel-frame joint type" in terms of the type of joining steel, and is located in a "corner section." Example 1 and Example 2 share the same structural details, except that Example 1 is a "rebar joint type" while Example 2 is a "steel-frame joint type." The structural details of items L) to R) explained in Example 1 are also shared by Example 2, and therefore 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 it to form a gap and connect horizontally to the beam steel frame 43 that is enclosed by the hoop reinforcement 75 inside the cast-in-place beam 15 (see also Figure 15). (m) The panel zone block 20 (21, 25) has a second vertical 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 connected to the beam steel frame 43 by providing a splice plate 52 at 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) contains a vertical second steel frame 48 located on the inner circumferential surface of the upper and lower steel pipe columns. Therefore, when the panel zone block 20 (21, 25) is fixed to the leading section 34 of the steel pipe column by inserting the second steel frame 48, the second steel frame 48 does not deform or break even when it comes into contact with the leading section 34 of the steel pipe column. The same effect is also achieved when the trailing section 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. Construction process of the frame (Example 2) B2-2. Second step (Example 2) The second step of Example 2 is shown for reference in Figure 15, which corresponds to Figure 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 for constructing the frame are generally the same, and the effects obtained are also similar, so descriptions of these will be omitted.

[0086] [Example 3] A3. Panel Zone Block Structural Details (Example 3) 16 is a structural diagram of the panel zone block of Example 3, where the A-A' cross section is a plan view, and the B-B' and C-C' cross sections are side views as seen from the arrows. 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 in a "corner portion" position, similar to Example 1. The difference between Example 1 and Example 3 is the number of panel zones to be integrated, with Example 1 being "one case" and Example 3 being "two case," with the two panel zones and their narrow sections being precast as a single half-precast beam; otherwise, they share the same structural details. The structural details of (L) to (R) explained in Example 1 are also shared by Example 3, and will therefore be omitted. 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 inside the two panel zones to form a narrow end and join horizontally to the beam reinforcing bar 41 enclosed in the hoop reinforcing bar 75 inside the cast-in-place beam 15. (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 second reinforcing bar 46 embedded within each of the two panel zones to connect vertically to the column reinforcing bars 42 enclosed in 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 bars 45 and second reinforcing bars 46, which are joined to the beam reinforcing bars 41 and column reinforcing bars 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 together with the two panel zones and the narrow half precast beam section 23. This configuration allows for the optimum maximum precast division 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 floors 16, or may be constructed integrally with the cast-in-place floors 16. If they are constructed separately from the cast-in-place floors 16 and then the cast-in-place floors 16 of the multiple floors are constructed together, construction can be carried out more quickly (see also Figure 2).

[0091] Above, "A. Structural details of the panel zone block" and "B. Process of constructing the frame" of each of Examples 1, 2, and 3 have been explained with reference to Figures 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, precast panel zone blocks 20 sandwich post-filled steel pipe columns 30 above and below and cast-in-place reinforced concrete beams horizontally in the spaces between them, each in series based on the load-bearing capacity of the cross-sectional forces (see Figures 1 and 2). Therefore, the present invention provides a frame 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 can be constructed rapidly, and a method for constructing a tubular frame.

[0093] 28) The type of joining steel material and the number of panel zones integrated in the panel zone block 20 of the present invention are not limited to the above-mentioned embodiment, and can be changed as needed in accordance with design requirements. The frame and frame construction method of the present invention can be applied not only to multi-story buildings on the ground, but also to multi-story buildings in underground shafts for parking or ventilation purposes. [Explanation of symbols]

[0094] 11 Frame, 12 Erection beam, 13 Horizontal tie 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 part), 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), 38 flange plate (bottom 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 inherent in multi-story buildings, 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 and surrounded by a hoop reinforcement; The panel zone block has a first reinforcing bar or a first steel frame for horizontally joining the beam reinforcing bar or the beam steel frame, respectively, with the panel zone block sandwiched between them, and a first steel bar for fixing the steel pipe column to the panel zone block. The panel zone block also has an air vent hole that penetrates vertically at the approximate center of the panel zone block, and an umbrella-shaped inclined surface on the underside of the panel zone block that slopes downward from the air vent hole to the periphery. A structure characterized by:

2. The frame according to claim 1, The steel pipe column and the panel zone block are integrated by fixing the panel zone block with the first steel bar to the fixing hole of the flange plate at the upper end of the steel pipe column, 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:

3. A method for constructing a frame inherent in 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 with a beam reinforcing bar or a beam steel frame horizontally enclosed in a hoop reinforcement, and is approximately rectangular in plan view and tubular in three dimensions. The panel zone block has a first reinforcing bar or a first steel frame for horizontally joining the beam reinforcing bar or the beam steel frame, respectively, with the panel zone block sandwiched between them, and a first steel bar for fixing the steel pipe column to the panel zone block. The panel zone block also has an air vent hole that penetrates vertically at approximately the center of the panel zone block, and an umbrella-shaped inclined surface on the underside of the panel zone block that slopes downward from the air vent hole to the periphery, At least two or more of the steel pipe columns arranged on any one side of the approximately rectangle 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 to the vicinity of the upper end of the steel pipe column in a direction perpendicular to the direction of the one side and horizontally, A first step of placing and fixing the panel zone block on the preceding portion of the steel pipe column fixed at a predetermined position for each side by the erection beam and the horizontal tie beam using the first steel bar, and further connecting the panel zone blocks to each other horizontally with the first steel bar or the first steel frame, with the panel zone block sandwiched between them; A second step of filling the panel zone block with concrete in the preceding 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, thereby integrating the panel zone block; A third step of assembling the panel zone blocks joined to the beam reinforcing bars or the beam steel frame in the first step with formwork and formwork supports and pouring concrete to integrate the panel zone blocks; A fourth step of placing the trailing part of the steel pipe column on the panel zone block with the first steel bar and fixing it to a predetermined position for each side with the new erection beam and the horizontal tie beam; A method for constructing a structure having the above structure.

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