Construction method of steel frame structure

Abstract

To provide a construction method for a steel structure that can suppress distortion, twisting, etc. of the steel structure when moving the steel structure.SOLUTION: A method of constructing a steel structure includes the steps of: reinforcing the steel structure by installing reinforcing beams (reinforcing members) 6 that connect the undersides of columns 3 adjacent to each other of a steel structure constructed at a location adjacent to a planed steel structure construction site; and constructing the steel structure at the planed steel structure construction site by moving the reinforced steel structure laterally from the adjacent location to the planed steel structure construction site.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a construction method of a steel structure, According to the method and particularly to a construction method for laterally moving a steel structure provided so as to be laterally movable to a target position and installing it. According to the method It relates to.

Background Art

[0002] A construction method of a steel structure called a traveling method or the like for constructing a steel structure by laterally moving a column of the steel structure is known (see Patent Document 1 etc.).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the construction method of the steel structure disclosed in Patent Document 1, since the steel structure is a heavy object, there is a problem that when moving the steel structure, the steel structure may be distorted or twisted. In view of the above-described problems, the present invention provides a construction method of a steel structure capable of suppressing distortion, torsion, etc. of the steel structure when moving the steel structure. According to the method It is provided.

Means for Solving the Problems

[0005] The construction method of the steel structure according to the present invention includes the steps of reinforcing the steel structure by providing a reinforcing member that connects the lower sides of adjacent columns of the steel structure constructed at an adjacent location adjacent to the planned construction site of the steel structure; a step of laterally moving the reinforced steel structure from the adjacent location to the planned construction site of the steel structure to construct the steel structure at the planned construction site of the steel structure; before laterally moving the reinforced steel structure, a lateral movement path is provided between the adjacent location and the planned construction site of the steel structure so as to be located below the columns of the steel structure for laterally moving the steel structure, and a guide rail extending parallel to the lateral movement path is provided; a step of providing a support means connected to the reinforcing member of the steel structure and guided by the guide rail; and a step of laterally moving the steel structure on the lateral movement path while being guided by the guide rail. The guide rail is configured to include a guide rail surface formed in a vertical plane, and the support means is configured to include a support beam provided so as to extend from the reinforcing member toward the guide rail, and a guide roller provided at the lower end side of the support beam and configured to roll on the guide rail surface of the guide rail. , the reinforcing member to which the support beam of the support means is connected is a reinforcing beam that connects the lower sides of columns adjacent to each other along a direction orthogonal to the direction in which the steel structure is laterally moved, and the support beam is provided so as to extend downward from the reinforcing beam toward the guide rail Therefore, the steel structure itself can be reinforced, and distortion, torsion, etc. of the steel structure during movement of the steel structure can be suppressed, and the steel structure can be moved smoothly and straight along the guide rail. Also, The lateral movement path and the guide rail are spaced apart from each other along a direction orthogonal to the direction in which the steel structure is laterally moved It is characterized in that it is provided as described above. Also, a friction reducing plate is provided between the lower end of the column of the steel structure and the lateral movement path, and the steel structure is moved on the lateral movement path. In addition, since the reinforcing member is used as a bearing portion when lifting the reinforced steel structure by the vertical movement means, the steel structure can be easily lifted by the vertical movement means, and the burden applied to the steel structure when lifting the steel structure by the vertical movement means can be reduced. In addition, after fixing each column of the reinforced steel structure to each column foundation at the planned construction site of the steel structure, the reinforcing member is removed, so that a desired steel structure can be constructed at the planned construction site of the steel structure. Furthermore, since the removed reinforcing member is used for other parts of the steel structure or used when constructing a steel structure other than the said steel structure, effective utilization of the reinforcing member can be achieved.

Brief Description of the Drawings

[0006] [Figure 1] Perspective view showing an overview of the construction method of the steel structure (Embodiment, Example 1). [Figure 2] Plan view showing an overview of the construction method of the steel structure (Embodiment, Example 1). [Figure 3] Side view showing an overview of the construction method of the steel structure (Embodiment, Example 1). [Figure 4] Side view showing a column formed separately into a lower column end and a main column part (Example 1). [Figure 5] Cross-sectional view of the lower column end and the main column part (Example 1). [Figure 6] Cross-sectional view showing the structure of the lower end of the main column part (Example 1). [Figure 7] View showing the lower surface and the recess of the bottom plate provided at the lower end of the main column part (Example 1). [Figure 8] View showing an example of the construction procedure of the construction method of the steel structure (Example 1). [Figure 9] View showing an example of the construction procedure of the construction method of the steel structure (Example 1). [Figure 10] View showing an example of the construction procedure of the construction method of the steel structure (Example 1). [Figure 11] Perspective view showing the state where the main column part is moved using the power applying means (Example 1). [Figure 12] Perspective view showing the state where the main column part is moved up and down using the vertical movement means (Example 1). [Figure 13] Plan view showing an overview of the construction method of the steel structure (Example 3). [Figure 14] Side view showing an overview of the construction method of the steel structure (Example 3).

Modes for Carrying Out the Invention

[0007] As shown in FIGS. 1 to 3, the construction method of the steel structure according to the embodiment includes a step of reinforcing the steel structure 2S constructed at the movement starting point S as an adjacent place adjacent to the movement end point E as the planned construction site of the steel structure by providing a reinforcing beam 6 (see FIGS. 1, 3, 11, etc.) as a reinforcing member that connects the lower sides of adjacent columns (steel columns) 3 of the steel structure 2S and the lower side of the column (steel column) 3, and a step of horizontally moving the steel structure 2M, which is reinforced by the reinforcing beam 6 and configured to be movable, from the movement starting point S to the movement end point E to construct the steel structure 2 at the movement end point E. Further, before horizontally moving the steel structure 2M, which is reinforced by the reinforcing beam 6 (steel structure reinforcing beam) and configured to be movable, between the movement starting point S and the movement end point E, a horizontal movement path 7 (see FIGS. 3, 11, etc.) necessary for horizontally moving the steel structure 2M and a guide rail 8 (see FIGS. 11, 12, etc.) extending in parallel with the horizontal movement path 7 are provided, a support means connected to the reinforcing beam 6 of the steel structure 2M and guided by the guide rail 8 is provided, and when horizontally moving the steel structure 2M on the horizontal movement path 7, the steel structure 2M is horizontally moved while being guided by the guide rail 8. The support means is composed of, for example, a support beam 65 provided so as to extend from the reinforcing beam 6 toward the guide rail 8 and a guide roller 66 provided on the lower end side of the support beam 65, as shown in FIGS. 11 and 12. In FIGS. 1 and 2, the position where the horizontal movement path 7 to be described later is provided is indicated by a two-dot chain line, and the position where the guide rail 8 installed in parallel with the horizontal movement path 7 is provided is indicated by a one-dot chain line. According to the construction method of the structure according to the embodiment, by providing the reinforcing beam 6, the steel structure itself can be reinforced, and in particular, distortion, torsion, etc. of the steel structure when the steel structure is moved can be suppressed. Also, the steel structure can be moved smoothly and straight along the guide rail 8. Hereinafter, as an example of the construction method of the steel structure according to the embodiment, a construction method of a steel structure using a column formed separately into a lower column end portion and a main column portion will be described.

[0008] Example 1 The construction method of the steel structure of Example 1 includes a movement range setting step, a column forming step, a movement starting point side step, a steel structure movement step, and a movement end point side step. As shown in Fig. 1(a), the movement range setting step is a step of setting a movement starting point S and a movement end point E at the planned construction site 1. In Figs. 1 and 2, the position where the later-described lateral movement path 7 is provided is indicated by a two-dot chain line, and the position where the guide rail 8 installed in parallel with the lateral movement path 7 is provided is indicated by a one-dot chain line. In the column forming step, as shown in Fig. 4, the column (steel column) 3 is formed separately into a lower column end portion 4 and a main column portion 5. That is, in the column forming step, the column 3 constituting the steel structure 2S assembled at the movement starting point S or the column 3 constituting the steel structure 2 constructed at the movement end point E is formed separately into the lower column end portion 4 and the main column portion 5. That is, in the construction method of the steel structure of Example 1, the column 3 formed separately into the lower column end portion 4 and the main column portion 5 is used. That is, the construction method of the steel structure of Example 1 is realized by using the column 3 including the lower column end portion 4 and the main column portion 5 connected to the lower column end portion 4. The movement starting point side step is a step of configuring the steel structure 2S, in which the main column portions 5 are provided on the lower column end portions 4 attached to the respective column foundations 10 at the movement starting point S and the reinforcing beams (steel reinforcing beams) 6 and the beams (steel beams) 61 are assembled between the adjacent main column portions 5, 5, into a movable steel structure 2M (see Figs. 1(b), 2(a), and 3(a)). As shown in Fig. 9(c), the steel structure movement step is a step of laterally moving the movable steel structure 2M configured in the movement starting point side step from the movement starting point S to the movement end point E. As shown in Fig. 10(c), the moving end part side step is a step of constructing the steel structure 2 fixed to the column foundations 10, 10... at the moving end part E by fixing each column main part 5, 5... of the horizontally moved steel structure 2M to each column lower end part 4, 4... fixed to the column foundations 10, 10... at the moving end part E (see Fig. 1(c), Fig. 2(b), Fig. 3(b)).

[0009] In the construction method of the steel structure, after setting the moving start part S and the moving end part E at the planned construction site 1, first, as shown in Fig. 8(a), independent column foundations 10, 10... are constructed on the ground G at the moving start part S and the moving end part E respectively, and a reinforced concrete floor F of the ground floor is constructed between each adjacent column foundation 10, 10.... The reinforced concrete floor F is constructed, for example, as shown in Fig. 8(a), after backfilling the earth and sand J and then placing concrete on the earth and sand J, or by placing concrete in a slab formwork (not shown). The moving start part S is a place where a temporary steel structure 2S is assembled on the column foundations 10, 10... provided at the moving start part S, configured as a movable steel structure 2M, and which is the starting point for moving this steel structure 2M to the moving end part E. Also, the moving end part E is the moving end of the steel structure 2M moved from the moving start part S, and is a place where the desired steel structure 2 is constructed by fixing the moved steel structure 2M to the column foundations 10, 10....

[0010] As shown in Fig. 8(a), the column foundation 10 is composed of a column base 20 provided in a foundation concrete placing space surrounded by a formwork (not shown), steel reinforcement (not shown) assembled in the foundation concrete placing space, and foundation concrete 30 obtained by solidifying the concrete placed in the foundation concrete placing space. The column base 20 is composed of a concrete part (abandoned concrete) 21 provided at the bottom of the foundation concrete placement space, a set frame 23 fixed to the concrete part 21 with an anchor 22, a plurality of anchor bolts 24, 24... attached to the set frame 23 and provided to extend upward, and a gauge plate 25 fixed with nuts (not shown in the figure) on the upper end sides of the plurality of anchor bolts 24, 24.... Then, concrete is placed in the foundation concrete placement space to form the foundation concrete 30, and the upper end sides of the plurality of anchor bolts 24, 24... are configured to protrude above the upper end surface 30t of the foundation concrete 30 (see FIGS. 8(b) and 4).

[0011] The lower end portion 4 of the column is a short, hollow square column made of metal such as steel with an L-shaped cross-section. At the lower end, it is provided with a base plate 41 fixed to the column foundation 10, and at the upper end, it is provided with a fixing surface 42 to which the lower end portion of the main column part 5 is fixed. For example, as shown in FIG. 5, the lower end portion 4 of the column is composed of a hollow short square column 4B formed by combining four flat steel plates 4A, 4A..., with openings at both the upper and lower ends (both ends), a base plate 41 having a square plate surface larger than the cross-sectional area of the opening at the lower end of the square column 4B, and provided to close the opening at the lower end of the square column 4B, and an upper end side plate 43 having a square plate surface larger than the cross-sectional area of the opening at the upper end of the square column 4B, and provided to close the opening at the upper end of the square column 4B. In this case, the fixing surface 42 of the lower end portion 4 of the column is formed by the plate surface that is the upper surface of the upper end side base plate 43. Also, for example, the edge of the opening at the lower end of the square column 4B and the plate surface that is the upper surface of the base plate 41 are joined by welding so that the central axis of the square column 4B coincides with the center of the square plate surface of the base plate 41, and the edge of the opening at the upper end of the square column 4B and the plate surface that is the lower surface of the upper end side plate 43 are joined by welding so that the central axis of the square column 4B coincides with the center of the square plate surface of the upper end side plate 43, thereby forming the lower end portion 4 of the column. Still, for example, in a factory or the like in advance, erection pieces (election pieces) 44 are respectively attached by welding to four side surfaces forming the peripheral surface near the upper end of the square column 4B at the lower end of the column 4.

[0012] The main column part 5 is a square column made of metal such as steel, which is hollow with an L-shaped cross-section and longer than the lower column part 4. As shown in FIGS. 6 and 7, at the lower end, it is configured to include a bottom plate 51 having a lower surface 52 and a recess 55 that is recessed upward from the lower surface 52. Similar to the lower column part 4, the main column part 5 is, for example, as shown in FIG. 5, composed of a hollow long square column 5B with open upper and lower ends (both ends) formed by combining four flat steel plates 5A, 5A..., and a bottom plate 51 provided with a square plate surface having a size corresponding to the cross-sectional area of the opening at the lower end of the square column 5B and configured to close the opening at the lower end of the square column 5B. Also, for example, with the bottom plate 51 fitted inside the opening at the lower end of the square column 5B so that the central axis of the square column 5B coincides with the center of the square plate surface of the bottom plate 51, the main column part 5 is formed by joining the square column 5B and the bottom plate 51 by welding. Still, as shown in FIG. 4, a diaphragm 53 protruding from the peripheral surface is provided on the peripheral surface of the lower end side of the square column 5B of the main column part 5, and a reinforcing beam 6 is joined to the diaphragm 53. The diaphragm 53 is preferably composed of a continuous diaphragm. That is, the main column part 5 is a steel column configured with the above-described bottom plate 51 provided on the lower end side of a normal steel column. Still, for example, in a factory or the like in advance, erection pieces (election pieces) 54 are respectively attached by welding to four side surfaces forming the peripheral surface near the lower end of the square column 5B of the main column part 5.

[0013] As shown in FIGS. 6 and 7, the recess 55 formed on the plate surface that becomes the lower surface 52 of the bottom plate 51 has rear side walls 56B, a left side wall 56L, and a right side wall 56R positioned on the rear side (the left side in FIG. 6) and both left and right sides (both sides in the direction orthogonal to the plane of FIG. 6 and the upper and lower sides in FIG. 7) of the moving direction M of the main column portion 5, and is configured to include a front opening 57 with the front side of the moving direction M of the main column portion 5 being open. Note that the moving direction M of the main column portion 5 is the moving direction of the main column portion 5 when moving the steel frame structure 2M configured to be laterally movable as will be described later. Also, at the boundary portions between the bottom surface 58 of the recess 55 and the rear side wall 56B, the left side wall 56L, and the right side wall 56R of the recess 55, grooves 59 are formed to avoid contact between the rear side surface 91 of the friction reduction plate 9 as the friction reduction material to be described later, the left side surface, the corner (hereinafter referred to as the "boundary corner") 93 that is the boundary between the left side surface and the upper surface 92, and the corners (hereinafter referred to as the "boundary corners") that are the boundaries between the bottom surface 58 of the recess 55 and the rear side wall 56B, the left side wall 56L, and the right side wall 56R. For example, as shown in FIG. 7, on the bottom surface 58 of the recess 55, narrow grooves 59 are formed so as to extend from and along the boundary lines between the bottom surface 58 of the recess 55 and the rear side wall 56B, the left side wall 56L, and the right side wall 56R, that is, narrow grooves 59 that are recessed further upward than the bottom surface 58 along the periphery of the bottom surface 58 of the recess 55 are provided. That is, in order to avoid contact between the boundary corners 93 around the upper surface 92 of the friction reduction plate 9 and the boundary corners around the bottom surface 58 of the recess 55 and to form a good surface contact state between the rear side surface 91 of the friction reduction plate 9 and the rear side wall 56B of the recess 51, the recess 55 is configured to be provided with the grooves 59.

[0014] Also, the size of the lower surface 52 of the bottom plate 51 that becomes the lower surface of the main column portion 5 is configured to be smaller than the size of the fixed surface 42 that becomes the upper surface of the lower end portion 4 of the column. In this way, by making the size of the lower surface 52 of the column main body 5 smaller than the size of the fixing surface 42 of the column lower end portion 4, when welding the outer peripheral edge of the lower surface 52 of the column main body 5 and the fixing surface 42 of the column lower end portion 4 as described later, even if the lower surface 52 of the column main body 5 is not accurately positioned at a predetermined position of the fixing surface 42 of the column lower end portion 4, as long as the entire lower surface 52 of the column main body 5 is positioned on the fixing surface 42 of the column lower end portion 4, it becomes possible to weld and fix the outer peripheral edge of the lower surface 52 of the column main body 5 and the fixing surface 42 of the column lower end portion 4, and the positioning work of the lower surface 52 of the column main body 5 with respect to the fixing surface 42 of the column lower end portion 4 associated with the moving operation of the column main body 5 becomes easy.

[0015] At the moving end portion E, the column lower end portions 4, 4... are fixed in advance to the respective column foundations 10, 10... formed at the moving end portion E. That is, at the moving end portion E, after providing the base mortar 26 on the foundation concrete 30 of the column foundation 10, after a predetermined time has elapsed, using a building construction device (not shown), the interval between the base plate 41 of the column lower end portion 4 temporarily fixed to the anchor bolts 24, 24... and the foundation concrete 30 is adjusted to straighten the embedding distortion of the column lower end portion 4 (adjust the perpendicularity of the column lower end portion 4), and then, a nut 28 is fastened to the anchor bolt 24 via a washer 27, and the base plate 41 of the column lower end portion 4 is fixedly tightened to the anchor bolt 24 of the column foundation 10, thereby fixing the column lower end portion 4 to the column foundation 10. Any building construction device may be used as long as it can straighten the embedding distortion of the column lower end portion 4.

[0016] More specifically, the moving start point side step includes a steel structure assembly step and a preparation step before moving the steel structure.

[0017] In the steel structure assembly step, the column main bodies 5, 5... are detachably attached to the column lower end portions 4, 4... attached to the respective column foundations 10, 10... at the moving start point S, and a steel structure 2S is assembled in which reinforcing beams 6 and beams 61 are assembled between the adjacent column main bodies 5, 5... detachably attached.

[0018] In the steel frame structure assembly step, first, the lower ends 4 of the columns are respectively installed on the column bases 10, 10... formed at the movement starting point S. At the movement starting point S, as shown in Fig. 8(a), after forming the foundation concrete 30 of the column base 10, as shown in Fig. 8(b), the gauge plate 25 of the column base 20 is removed, and after providing the base mortar 26 on the foundation concrete 30, the upper end side of the anchor bolt 24 is passed through the through hole 45 formed in the base plate 41 of the lower end 4 of the column, and the base plate 41 of the lower end 4 of the column is installed on the foundation concrete 30 of the column base 10 via the base mortar 26 (see Fig. 4). That is, the nut 28 is temporarily tightened to the anchor bolt 24 via the washer 27, so that the base plate 41 of the lower end 4 of the column is temporarily fixed to the anchor bolt 24 of the column base 10. That is, at the movement starting point S, the lower ends 4, 4... of the columns are temporarily fixed to the column bases 10, 10..., and after assembling the steel frame structure 2S in a state where the main column parts 5, 5... are detachably attached to the lower ends 4, 4... of the columns temporarily fixed to the column bases 10, 10..., the nut 28 is fastened to the anchor bolt 24 via the washer 27, and the final tightening operation of fixing the base plate 41 of the lower end 4 of the column to the anchor bolt 24 of the column base 10 is performed, thereby fixing the lower end 4 of the column to the column base 10.

[0019] For the attachment operation of detachably attaching the main column part 5 to the lower end 4 of the column, it is preferable to use a building construction device 11 that is detachably attached to the lower end 4 of the column and the main column part 5 and can perform building construction adjustments such as misalignment adjustment, level adjustment, and toppling adjustment between the lower end 4 of the column and the main column part 5.

[0020] Also, in the steel frame structure assembly step, in order to detachably attach the lower end 4 of the column and the main column part, the building construction device 11 detachably attached to the lower end 4 of the column and the main column part 5, and the building construction device (not shown) described above are used to perform the building construction work. That is, while performing the erection distortion correction (verticality adjustment) work of the column 3 composed of the lower end portion 4 of the column and the main column portion 5 using these erection devices 11 and the erection devices outside the above-described figures, it is preferable to assemble the steel structure 2S at the movement start point portion S by assembling the reinforcing beams 6 and the beam 61 between the main column portions 5, 5 of the adjacent columns 3, 3.

[0021] That is, as the erection device outside the above-described figures, an erection device capable of performing the erection distortion correction (verticality adjustment) of the lower end portion 4 of the column or the column 3 with respect to the column foundation 10 may be used. Further, as the above-described erection device 11, an erection device capable of performing erection adjustments such as misalignment adjustment, level adjustment, and tilt adjustment between the lower end portion 4 of the column and the main column portion 5, that is, erection adjustment of the main column portion 5 with respect to the lower end portion 4 of the column may be used.

[0022] The construction work of the steel structure 2S at the movement start point portion S is performed, for example, in a state where each main column portion 5, 5... for one section is detachably attached to each lower end portion 4, 4... of the column. That is, the reinforcing beam 6 is assembled between the lower end sides of the adjacent main column portions 5, 5. Thereafter, the beam 61 is assembled at the beam insertion position for supporting the second floor of the adjacent main column portions 5, 5, and further, the deck plate 62 is laid between the beams 61, 61. Further, the columns of the second section are connected, the beam 61 is assembled at the beam insertion position for supporting the third floor, and further, the deck plate 62 is laid between the beams 61, 61. Also, the beam 61 is assembled at the beam insertion position for supporting the roof floor, and further, the deck plate 62 is laid between the beams 61, 61. In FIG. 1, the steel structure 2S for constructing a three-story steel building is illustrated, but the number of floors may be arbitrarily determined. Thus, the construction method of the steel structure according to the first embodiment is realized using a steel structure including the column 3 formed by connecting the lower end portion 4 of the column and the main column portion 5, and the beams connected between the adjacent columns 3 and 3. The steel structure may have a configuration including at least the above-described beam 61 as the beam.

[0023] The steel frame structure 2S constructed at the movement starting point S and the horizontally movable steel frame structure 2M constructed at the movement starting point S in the steel frame structure pre-movement preparation step to be described later are configured to be at least self-supporting.

[0024] In addition, in the construction method of the steel frame structure of the first embodiment, since the steel frame structure is formed by assembling the reinforcing beams 6 between the lower ends of the adjacent column main parts 5, 5, the steel frame structure itself can be reinforced, and when the steel frame structure is moved to the movement end point E, distortion, torsion, etc. of the steel frame structure can be suppressed.

[0025] In the steel frame structure pre-movement preparation step, each column main part 5, 5... of the steel frame structure 2S assembled at the movement starting point S in the steel frame structure assembly step is removed from each column lower end part 4, 4... to form a horizontally movable steel frame structure 2M. That is, after assembling the steel frame structure 2S reinforced at the movement starting point S using the building construction device 11, by removing the building construction device 11, each column main part 5, 5... of the reinforced steel frame structure 2S is removed from each column lower end part 4, 4... to form a reinforced horizontally movable steel frame structure 2M.

[0026] More specifically, the steel frame structure movement step includes a horizontal movement path configuration step and a movement step. In the horizontal movement path configuration step, a horizontal movement path 7 extending in the movement direction is configured between adjacent column main parts 5, 5 along the movement direction M. In the movement step, the horizontally movable steel frame structure 2M is horizontally moved from the movement starting point S to the movement end point E via the horizontal movement path 7.

[0027] Specifically, in the horizontal movement path configuration step, a movement path forming member extending in the movement direction M is installed between adjacent column lower end parts 4, 4 along the movement direction M, and a horizontal movement path 7 is configured such that the upper surface of the smooth surface forming member 75 attached to the fixed surface 42 of the column lower end part 4 fixed to the column foundation 10 and the upper surface of the smooth surface forming member 75 attached to the upper end surface of the movement path forming member are at the same horizontal level.

[0028] The moving path forming member is composed of, for example, a main rail member 70 installed between adjacent lower ends 4, 4 of columns along the moving direction M, and a rail member 71 at the edge of the column installed at the edge of the lower end 4 of the column. The main rail member 70 and the rail member 71 at the edge of the column are made of, for example, a shaped steel such as an H-shaped steel. One flange of the H-shaped steel is fixed to the reinforced concrete floor F between the lower ends 4, 4 of the columns, and the outer surface of the other flange of the H-shaped steel is configured to be the upper end surface. The moving path forming member is provided so as to be continuous along the moving direction M. For example, the moving path forming member is provided so as to be linearly continuous along the moving direction M, or is provided so as to be continuously curved along the moving direction M.

[0029] Also, in the lateral movement path configuration step, a guide rail 8 is provided parallel to the lateral movement path 7 on the reinforced concrete floor F, and the above-described support means (support means composed of a support beam 65 and a guide roller 66 (see FIG. 11)) supported by the guide rail 8 from the steel structure 2M configured to be laterally movable is provided. Thus, the steel structure is configured to be laterally movable while being guided by the guide rail 8. Also, the guide rail 8 is made of, for example, a shaped steel such as an H-shaped steel, and one flange of the H-shaped steel is fixed to the reinforced concrete floor F so as to be a guide rail surface formed by a vertical surface. Therefore, by configuring the guide roller 66 to roll on the guide rail surface, the steel structure 2M can be smoothly and accurately moved straight in the moving direction M with the main column part 5 of the steel structure 2M facing the moving direction M, and the lateral movement of the steel structure 2M can be smoothly and accurately performed.

[0030] Then, in the moving step, a friction reducing plate 9 as a friction reducing material is installed in the recess 55 of the bottom plate 51 of the main column part 5 of the steel structure 2M configured to be laterally movable, and the friction reducing plate 9 is protruded downward from the lower surface 52 of the bottom plate 51. While bringing the friction reducing plate 9 into contact with the road surface of the lateral movement path 7, the steel structure 2M is laterally moved to the movement end point E. That is, when the steel frame structure 2M configured to be horizontally movable is moving, the friction reduction plate 9 is brought into contact with the road surface of the horizontal movement path 7, and the steel frame structure 2M is moved in a non-contact state where the lower surface 52 of the bottom plate 51 of the column main part 5 does not contact the road surface of the horizontal movement path 7. Therefore, due to the contact between the friction reduction plate 9 and the road surface of the horizontal movement path 7 formed as a smooth surface by the smooth surface forming member 75, the frictional resistance during the movement of the steel frame structure 2M can be reduced, and the steel frame structure 2M can be easily moved horizontally.

[0031] In addition, as the friction reduction plate 9, for example, a friction reduction plate formed of a low-friction material such as monomer cast nylon (polyamide resin) may be used. The friction reduction plate 9 is composed of, for example, a rectangular parallelepiped plate material. The length of the long side of the rectangular parallelepiped constituting the friction reduction plate 9 is longer than the length dimension from the rear side wall 56B of the concave portion 55 to the front side opening 57, and the length of the short side of the rectangular parallelepiped is formed to be a dimension corresponding to the interval dimension between the left side wall 56L and the right side wall 56R of the concave portion 55, and the height (plate thickness) of the rectangular parallelepiped is formed to be longer than the length dimension from the bottom surface 58 of the concave portion 55 to the lower surface 52 of the bottom plate 51. In other words, the concave portion 55 is formed by removing a part of the lower surface 52 of the bottom plate 51, has a rear side wall 56B located on the rear side in the movement direction M of the column main part 5 and contacting the rear side surface 91 of the friction reduction plate 9, is formed in a front side opening 57 with the front side in the movement direction M being open, and the depth dimension of the concave portion 55 from the lower surface 52 of the bottom plate 51 to the bottom surface 58 is formed to be smaller than the plate thickness dimension of the friction reduction plate 9 inserted between the bottom surface 58 of the concave portion 55 and the road surface of the horizontal movement path 7.

[0032] And when installing the friction reduction plate 9 in the recess 55 of the column main body 5 during the moving step, the rear side surface 91 on one end side of the friction reduction plate 9 is brought into contact with the rear side wall 56B of the recess 55, and the front side surface side 99 on the other end side of the friction reduction plate 9 is projected from the recess 55 through the front opening 57. That is, the rear end side surface 91 formed by one side surface between the short sides of the rectangular parallelepiped forming the friction reduction plate 9 is brought into contact with the side wall 56B of the recess 55, and the front side surface side 99 which is the other side surface between the short sides of the rectangular parallelepiped is installed in a state of being projected outward from the recess 55 through the front opening 57 of the recess 55. When the steel structure 2M is laterally moved in this state, since the recess 55 is provided with the groove portion 59 described above, the rear side surface 91 of the friction reduction plate 9 and the rear side wall 56B of the recess 55 can be surely brought into surface contact, and the force applied to the bottom plate 51 can be surely transmitted to the rear side surface 91 of the friction reduction plate 9 through the rear side wall 56B of the recess 55, so that the steel structure 2M can be moved laterally more smoothly. That is, when the steel structure 2M is moved, the force is surely transmitted from the rear side wall 56 of the recess 55 of the column main body 5 to the rear side surface 91 of the friction reduction plate 9, and the steel structure 2M and the friction reduction plate 9 move together, so that the friction during the lateral movement of the steel structure 2M can be reduced. Further, after the movement of the steel structure 2M, when removing the friction reduction plate 9 from the recess 55 in the moving end portion side step, the front side surface side 99 protruding outward from the recess 55 through the front opening 57 can be held, and the friction reduction plate 9 can be easily removed from the recess 55.

[0033] In addition, as shown in FIG. 12, the operation of installing the friction reduction plate 9 in the recess 55 and the operation of easily removing the friction reduction plate 9 from the recess 55 are performed in a state where the column main body 5 is moved upward by using the vertical jack 15 as the vertical movement means. In this case, as a bearing part when lifting the reinforced steel frame structure with the vertical jack 15, as shown in Fig. 12, by using the reinforcing beams 6, 6, the steel frame structure can be easily lifted by the vertical jack 15, and the burden applied to the steel frame structure when lifting it with the vertical jack 15 can be reduced. Also, in Fig. 12, reference numeral 16 is a height adjustment base for adjusting the installation height of the vertical jack 15.

[0034] Also, in the moving step, as the power for horizontally moving the steel frame structure 2M configured to be horizontally movable from the moving start point S to the moving end point E via the horizontal movement path 7, for example, the pressing force by a plurality of pressing jacks 13, 13... as power applying means may be used. Incidentally, as shown in Fig. 11 for example, the pressing jack 13 connects the piston side to the mounting piece 12 attached to the lower end side of the side surface on the rear side in the moving direction of the main column part 5, and after fixing the fixing device 14 provided on the cylinder side to the main rail material 70 etc., by extending the piston, a pressing force can be applied to the main column part 5 of the steel frame structure 2M. For example, pressing jacks 13 as power applying means are respectively installed on the rear sides of a plurality of main column parts 5, 5... of the steel frame structure 2M configured to be horizontally movable, and by driving these pressing jacks 13, 13..., the steel frame structure 2M is moved to the moving end point E.

[0035] In the moving end portion side step, the column main portion 5 of the steel frame structure 2M that has been laterally moved to the moving end portion E is moved upward using the vertical movement jack 15 to remove the friction reduction plate 9 from the recess 55 of the bottom plate 51 of the column main portion 5. After removing the smooth surface forming member 75 attached to the fixed surface 42 that becomes the upper surface of the column lower end portion 4, for example, a steel plate 51A (see FIGS. 10(b) and 10(c)) as a metal plate is installed in the recess 55 from which the friction reduction plate 9 has been removed. The outer peripheral edge of the lower surface 52 of the column main portion 5 and the fixed surface 42 that becomes the upper end surface of the column lower end portion 4 are welded and joined. On the front side opening 57 side of the recess 55, the steel plate 51A and the fixed surface 42 of the column lower end portion 4 are welded and joined, and the steel plate 51A and the bottom plate 51 of the column main portion 5 are welded and joined. Thus, at the moving end portion E, the steel frame structure 2 is constructed. Note that, as the steel plate 51A, a plate having a plate thickness dimension formed to be the same as the depth dimension of the recess 55 from the lower surface 52 of the column main portion 5 to the bottom surface 58 of the recess 55 is used.

[0036] After the welding work is completed, the reinforcing beam 6 and the support beam 65 are removed from the steel frame structure 2 (see FIG. 10(c)). If the removed reinforcing beam 6 and support beam 65 are reused at other parts of the steel frame structure 2 or reused when constructing a steel frame structure other than the steel frame structure 2, effective utilization of the reinforcing beam 6 and the support beam 65, that is, effective utilization of resources can be achieved, which is preferable.

[0037] Then, by constructing, for example, an outer wall, a floor slab, an interior finish, etc. on the steel frame structure 2 (see FIGS. 1(c), 2(b), and 3(b)) constructed at the moving end portion E, a steel frame building is constructed.

[0038] Hereinafter, an example of the construction procedure according to the construction method of the steel frame structure of Example 1 will be described with reference to FIGS. 8 to 10. First, as shown in Fig. 8(a), column footings 10, 10... are constructed at the starting point S and the ending point E of movement in the planned construction site 1 according to the interval (span) between columns 3, 3 of the steel structure 2 to be constructed, and a reinforced concrete floor F is constructed between the column footings 10, 10... In addition, when the starting point S and the ending point E of movement are separated, column footings 10, 10... and a reinforced concrete floor F may also be constructed between the starting point S and the ending point E of movement. Next, as shown in Fig. 8(b), column lower ends 4 are temporarily fixed to each of the column footings 10, 10... at the starting point S of movement. At this time, a smooth surface forming member 75 such as a stainless steel sheet is attached to the fixing surface 42 of the column lower end 4. Furthermore, as shown in Fig. 8(c), a building erection device 11 is installed, and column main parts 5, 5... are detachably attached to the column lower ends 4, 4... By installing an external building erection device on the column lower end 4 side, columns 3 are assembled, and while straightening the erection distortion (verticality adjustment) of column 3, a reinforcing beam 6 is assembled between the lower ends of the column main parts 5, 5 of adjacent columns 3, 3. When the assembly work of the reinforcing beam 6 is completed, next, the beam 61 of the second floor part is assembled, and the deck plate 62 of the second floor part is laid. Then, the assembly of the beam 61 for the desired number of floors and the laying work of the deck plate 62 are carried out to construct the desired steel structure 2S at the starting point S of movement. In addition, before constructing the steel structure 2S, a main rail member 70 is installed on the reinforced concrete floor F between adjacent column lower ends 4, 4 along the movement direction M, and a column edge rail member 71 is installed on the reinforced concrete floor F at the column edge of the column lower end 4. In this case, as shown in Fig. 8(c) and Fig. 9(a), the main rail member 70 may be attached first and then the column edge rail member 71 may be attached, or conversely, the column edge rail member 71 may be attached first and then the main rail member 70 may be attached. Also, at this time, a smooth surface forming member 75 such as a stainless steel sheet is pre-attached to the upper end surface 74 of the main rail member 70 and the upper end surface 74 of the column-side rail member 71. That is, later, for reducing friction when moving the movable steel structure 2M, a smooth surface forming member 75 such as a stainless steel sheet is attached to the fixing surface 42 of the column lower end portion 4, and similarly, a smooth surface forming member 75 such as a stainless steel sheet is also attached to the upper end surface 74 of the main rail member 70 and the upper end surface 74 of the column-side rail member 71. If the steel structure 2S is constructed at the movement start point S, as shown in Fig. 9(a), by removing the building device 11 and the building device (not shown), a movable steel structure 2M is configured at the movement start point S. Then, using the vertical jack 15, the main column portion 5 is moved upward (slightly lifted), and a friction reduction plate 9 is installed between the concave portion 55 of the bottom plate 51 of the main column portion 5 and the smooth surface forming member 75 attached to the fixing surface 42 of the column lower end portion 4. After that, the vertical jack 15 is lowered to lower the main column portion 5 (see Fig. 9(a)). Then, an attachment piece 12 (see Fig. 9(a)) for attaching one end of the pressing jack 13 is attached to the side surface located on the rear side in the movement direction M at the lower end side of the main column portion 5. As shown in Fig. 9(b), the other end of the pressing jack 13 is fixed to the lateral movement path 7 via the fixing device 14 to obtain a reaction force, and one end of the pressing jack 13 is fixed to the attachment piece 12. Incidentally, for example, the attachment piece 12 is attached so as to be arranged side by side with the building piece 54. For example, as shown in Fig. 11, the building piece 54 is provided one by one in the vicinity of the boundary with the adjacent left and right side surfaces on each side surface located in the front-rear direction of the movement direction M at the lower end side of the main column portion 5, and is provided one by one at the central position of each side surface located in the left-right direction of the movement direction M at the lower end side of the main column portion 5. In this case, for example, as shown in Fig. 11, the attachment piece 12 is provided so as to be located on the central side between the left and right on the side surface located on the rear side in the movement direction M at the lower end side of the main column portion 5. Also, for example, as shown in FIG. 11, the building pieces 44 are each provided at a position near the boundary with the adjacent left and right side surfaces on each side surface positioned in the front-rear direction of the moving direction M at the lower end portion 4 of the column, and are each provided at the central position of each side surface positioned in the left-right direction of the moving direction M at the lower end portion 4 of the column. Then, as shown in FIG. 9(c), every time the pressing jack 13 is driven and the movable steel structure 2M that can be moved by extending the pressing jack 13 by one stroke is pushed and moved in the moving direction M, the pressing jack 13 is replaced. In this way, by repeating the pressing operation by the pressing jack 13 and the operation of replacing the pressing jack 13, the movable steel structure 2M is laterally moved to the moving end portion E. After the steel structure 2M is laterally moved to the moving end portion E as shown in FIG. 10(a), the column-side rail member 71 is removed, and then, using the vertical jack 15, the main column portion 5 is moved upward (slightly lifted), and the friction reduction plate 9 is removed from between the concave portion 55 of the bottom plate 51 of the main column portion 5 and the fixed surface 42 of the lower end portion 4 of the column. After removing the smooth surface forming member 75 attached to the fixed surface 42 of the lower end portion 4 of the column, the vertical jack 15 is lowered to lower the main column portion 5. Then, as shown in FIG. 10(a), the building device 11 is attached again to the main column portion 5 and the lower end portion 4 of the steel structure 2M that has been laterally moved to the moving end portion E, and the straightening work for the building-in distortion between the lower end portion 4 of the column and the main column portion 5 is performed. After performing the straightening work for the building-in distortion, as shown in FIG. 10(b), after removing the building pieces 44 and 54, the outer peripheral edge of the lower surface 52 of the main column portion 5 and the fixed surface 42 of the lower end portion 4 of the column are welded to fix the main column portion 5 and the lower end portion 4 of the column. In this case, as described above, a steel plate 51A is inserted between the concave portion 55, the bottom surface 58 of the main column portion 5, and the fixed surface 42 of the lower end portion 4 of the column through, for example, the front opening 57 of the concave portion 55. On the side of the front opening 57 of the concave portion 55, the steel plate 51A and the fixed surface 42 of the lower end portion 4 of the column are welded and joined, and the steel plate 51A and the bottom plate 51 of the main column portion 5 are welded and joined, so that the entire circumference of the outer peripheral edge of the lower surface 52 of the main column portion 5 can be reliably welded to the fixed surface 42 of the lower end portion 4 of the column. After the welding operation is completed, as shown in Fig. 10(c), by removing the reinforcing beam 6, the support beam 65, and the main rail material 70, the desired steel structure 2 with the columns 3 fixed to the column foundations 10, 10... at the moving end point E will be constructed.

[0039] According to the construction method of the steel structure of Example 1, as in Patent Document 1, the alignment work between the fixing holes of each base plate provided at the lower ends of the multiple columns of the steel structure and the screw holes of each column fixing part can be made unnecessary, so that a construction method of a steel structure with excellent workability can be provided. That is, in the construction method of the steel structure disclosed in Patent Document 1, in order to firmly fix the base plate to the steel column fixing part by fastening the threaded steel bars (bolts), the diameters of the threaded steel bars, the diameters of the fixing holes of the base plates of the steel columns, and the diameters of the screw holes of the steel column fixing parts are formed to be approximately the same size. After moving the steel structure, it is necessary to accurately align the center positions of the fixing holes of each base plate of the multiple steel columns of the steel structure with the center positions of the corresponding screw holes. However, in order to move a steel structure having a large number of steel columns, it is very difficult to accurately align all the fixing holes of each base plate provided at the lower ends of the multiple steel columns of the steel structure with the screw holes of the corresponding steel column fixing parts, and there are problems in terms of workability. In addition, if the center positions of the fixing holes and the center positions of the screw holes cannot be accurately aligned, the threaded steel bars (bolts) cannot be inserted into the fixing holes and the screw holes. In such a case, on-site, there may be a possibility of performing corrective processing such as re-forming the fixing holes of the base plate, but this may lead to deterioration of quality. Also, due to the labor and other costs involved in the corrective processing, the construction cost may increase or cause construction delays. That is, according to the construction method of the steel structure of Example 1, the alignment work between the fixing holes of each base plate, which is a problem in Patent Document 1, and the screw holes of the corresponding column fixing parts can be made unnecessary, so that a construction method of a steel structure with excellent workability can be realized. In addition, since the column foundation 10 for attaching the lower end portion 4 of the column to the movement start point portion S was constructed, at the movement start point portion S, the construction work of assembling the steel frame structure 2S can be accurately performed, and the work of constructing the laterally movable steel frame structure 2M can be safely performed. Furthermore, after moving the laterally movable steel frame structure 2M to the movement end point portion E, as in Example 2 described later, using each column lower end portion 4, 4... fixed to each column foundation 10, 10... of the movement start point portion S, a steel frame structure can be constructed at the movement start point portion S.

[0040] Example 2 On the upper part of the lower end portion 4 of the column fixed to each column foundation 10, 10... of the movement start point portion S, the lower end side of the column main portion 5 is fixed, and a steel frame structure in which reinforcing beams 61 and beams 61 are assembled between the column main portions 5, 5 of adjacent columns 3 at the movement start point portion S is constructed, and the steel frame structure constructed at the movement start point portion S and the steel frame structure 2 constructed at the movement end point portion E may be combined. That is, after moving the steel frame structure 2M to the movement end point portion E, at the movement start point portion S, since each column lower end portion 4, 4... fixed to each column foundation 10, 10... remains, without removing these column lower end portions 4, 4..., by using them to construct a steel frame structure at the movement start point portion S and combining the steel frame structure constructed at the movement start point portion S and the steel frame structure 2 constructed at the movement end point portion E, the effective utilization of each column lower end portion 4, 4... fixed to each column foundation 10, 10... of the movement start point portion S can be achieved.

[0041] Example 3 As shown in FIGS. 13 and 14, a steel frame structure 2 may be constructed by combining a plurality of divided steel frame structure units 2X, 2Y, 2Z. In FIGS. 13 and 14, after moving the steel structure unit 2X constructed at the movement starting point S by two spans from the movement starting point S, a steel structure unit 2Y is constructed at the movement starting point S. After connecting the steel structure unit 2X and the steel structure unit 2Y, an example is shown in which the connected steel structure unit 2X and the steel structure unit 2Y are moved together to the movement end point E. However, the steel structure units 2X and 2Y constructed at the movement starting point S may be moved one by one to the movement end point E. Also, in FIGS. 13 and 14, an example is shown in which the steel structure unit 2Z constructed at the movement starting point S is connected to the steel structure unit 2Y constructed at the movement end point E. However, the steel structure unit 2Z may not be constructed at the movement starting point S.

[0042] In each of the embodiments, in the lateral movement path construction step, a movement path forming member extending along the movement direction M is installed between the lower ends of adjacent columns 4, 4 along the movement direction M, and the upper surface of the smooth surface forming member 75 attached to the fixing surface 42 of the lower end of the column 4 and the upper surface of the smooth surface forming member 75 attached to the upper end surface 74 of the movement path forming member form a road surface at the same horizontal level, and a lateral movement path 7 is configured. In the movement step, a friction reducing plate 9 is installed in the recess 55 of the bottom plate 51 of the column main part 5 of the steel structure 2M configured to be laterally movable, and the friction reducing plate 9 protrudes below the lower surface 52 of the bottom plate 51, and an example is shown in which the steel structure 2M is laterally moved to the movement end point E while the friction reducing plate 9 is in contact with the road surface of the lateral movement path 7. However, if the fixing surface 42 of the lower end of the column 4 itself and the upper end surface 74 of the movement path forming member itself are configured to function as a smooth road surface, it is not necessary to provide the smooth surface forming member 75 described above. That is, in the lateral movement path construction step, a movement path forming member extending along the movement direction M may be installed between the lower ends of adjacent columns 4, 4 along the movement direction M, and the fixing surface 42 of the lower end of the column 4 fixed to the column foundation 10 and the upper end surface 74 of the movement path forming member form a road surface at the same horizontal level, and a lateral movement path 7 may be configured.

[0043] Further, in each embodiment, in the moving end portion side step, a steel plate 51A is installed in the recess 55 from which the friction reducing plate 9 is removed, and at the front opening 57 of the recess 55, the steel plate 51A and the fixing surface 42 of the column lower end portion 4 are welded and joined, and the steel plate 51A and the bottom plate 51 of the column main portion 5 are welded and joined. However, the steel plate 51A as a metal plate may not be installed in the recess 55.

[0044] Further, in each embodiment, the recess 55 formed in the bottom plate 51 of the column main portion 5 has a rear side wall 56B located on the rear side in the moving direction M of the column main portion 5, and is provided with a front opening 57 having an open front side in the moving direction M of the column main portion 5. However, the recess 55 formed in the bottom plate 51 of the column main portion 5 may not have an open front side in the moving direction M of the column main portion 5. That is, the recess 55 may be a recess that opens only on the lower surface 52 of the bottom plate 51 and does not open on the peripheral surface of the bottom plate 51, or may be a recess having an opening that opens on the left side or the right side or both the left and right sides other than the front side and the rear side in the moving direction M of the column main portion 5.

[0045] Further, in each embodiment, an example using a pressing jack (pressing means) 13 as the power applying means is shown, but a traction jack (traction means) may be used as the power applying means.

[0046] Further, in each embodiment, an example in which the outer peripheral edge of the lower surface 52 of the column main portion 5 and the fixing surface 42 of the column lower end portion 4 are welded and fixed, that is, an example in which the lower end portion of the column main portion 52 of the steel frame structure and the upper end portion of the column lower end portion 4 are welded and fixed is shown, but a fixing method other than welding may be used.

[0047] Further, in each embodiment, an example of moving a steel frame structure in which beams 6, 61 and deck plates 62 are assembled between the column main portions 5, 5 is shown, but at least a steel frame structure in which beams 6, 61 are assembled between the column main portions 5, 5 may be moved.

[0048] In addition, although the building distortion correction work described in each embodiment is preferably performed using the building construction device described above, the building distortion correction work may be performed using a fall prevention wire or the like.

[0049] In addition, in each embodiment, an example in which a corner column is used as the lower column end portion 4 and the main column portion 5 constituting the column (steel column) 3 has been shown. However, as the lower column end portion 4 and the main column portion 5 constituting the column 3, columns other than corner columns, for example, round columns, polygonal columns, etc. may be used.

[0050] In addition, in each embodiment, at the movement start point S, after assembling the steel structure 2S in a state where the main column portions 5, 5... are detachably attached to the lower column ends 4, 4... temporarily fixed to the respective column foundations 10, 10..., the lower column end 4 is fixed to the column foundation 10. However, similar to the movement end point E, at the movement start point S, after fixing the lower column ends 4, 4... to the respective column foundations 10, 10... formed at the movement start point S by tightening work, the main column portions 5, 5... may be assembled in a state where they are detachably attached to the lower column ends 4, 4... fixed to the respective column foundations 10, 10....

[0051] In addition, in each embodiment, an example in which the main column portion 5 is moved upward (slightly lifted) using the vertical jack 15 and the friction reduction plate 9 is installed between the concave portion 55 of the bottom plate 51 of the main column portion 5 and the smooth surface forming member 75 attached to the fixing surface 42 of the lower column end 4 has been shown. However, the friction reduction plate 9 may be attached in advance to the bottom surface 55 of the concave portion 55 of the main column portion 5 with an adhesive tape or the like. In addition, when providing the main column portion 5 on the lower column end 4 at the movement start point S, after placing the friction reduction plate 9 on the smooth surface forming member 75 attached to the fixing surface 42 of the lower column end 4, and then providing the main column portion 5 on the lower column end 4, the friction reduction plate 9 may be installed between the smooth surface forming member 75 that becomes the upper surface of the lower column end 4 and the concave portion 55 of the main column portion 5.

[0052] Also, in each embodiment, an example in which the moving path forming member is configured by dividing it into a main rail member 70 and a rail member 71 at the edge of the column, which are installed between adjacent lower ends 4, 4 of the columns along the moving direction M, is shown. However, the moving path forming member may be configured by a single rail member installed between adjacent lower ends 4, 4 of the columns along the moving direction M.

[0053] Also, in each embodiment, an example in which a construction piece 44 is attached in advance to the lower end 4 of the column, and a construction piece 54 is attached in advance to the lower end side of the main column part 5, and an attachment piece 12 is attached to the lower end side of the main column part 5 when the pressing jack 13 is installed is shown. However, the timing of attaching the construction pieces 44, 54 and the attachment piece 12 may be at any time. The main point is that the construction piece 44 should be attached to the lower end 4 of the column by the time it is needed, and the construction piece 54 and the attachment piece 12 should be attached to the lower end side of the main column part 5 by the time they are needed.

[0054] Also, in each embodiment, an example in which the attachment piece 12 is attached so as to be aligned horizontally with the construction piece 54 is shown. However, for example, when one construction piece 44 is provided in advance at the center position of each side surface of the lower end 4 of the column, and one construction piece 54 is provided in advance at the center position of each side surface of the lower end side of the main column part 5, the construction piece 54 may be removed and the attachment piece 12 may be attached, or the construction piece 54 may be used as it is as the attachment piece of the pressing jack 13.

[0055] Also, in each embodiment, an example in which steel frame structures are configured to be movable by constructing column bases 10, 10... at the moving start point S, attaching lower ends 4, 4... of columns to the constructed column bases 10, 10... respectively, providing main column parts 5, 5... on the lower ends 4, 4... of the columns attached to the column bases 10, 10... and assembling a beam 61 between adjacent main column parts 5, 5 is shown. However, the column bases 10, 10... and the lower ends 4, 4... of the columns may not be provided at the moving start point S. For example, a rail material for forming a moving path may be installed at the starting point S of movement, and the main column parts 5, 5... may be provided on the smooth surface forming member 75 attached to the upper surface of the rail material, and a steel structure in which the beam 61 is assembled between the adjacent main column parts 5, 5 may be configured to be movable. That is, in the step on the starting point side of movement, at the starting point S of movement, it is possible to make each main column part 5, 5... stand alone, and it is possible to construct a steel structure in which the beam 61 is assembled between the adjacent main column parts 5, 5..., and a configuration necessary for enabling the movement of the steel structure may be provided. That is, at the starting point S of movement, a configuration such as a mounting base and a road surface necessary for the installation and movement of each main column part 5, 5... may be provided.

[0056] In addition, in each of the above-described embodiments, the construction method of the steel structure using a column (steel column) formed by dividing it into a column lower end part and a main column part has been described. However, the present invention is naturally applicable to the construction method of a steel structure using a normal steel column that is not divided into a column lower end part and a main column part. For example, it is also applicable to a construction method of a steel structure using a normal steel column (for example, a steel column described in Patent Document 1) having a base plate provided at the lower end of a column part formed such that the column lower end part and the main column part are integrated and there is no distinction between the column lower end part and the main column part. That is, the construction method of the steel structure according to the present invention may be a method capable of suppressing distortion, torsion, etc. of the steel structure when moving the steel structure. That is, a step of reinforcing the steel structure by providing a reinforcing member that connects the lower sides of adjacent normal steel columns of the steel structure constructed at an adjacent location adjacent to the planned construction site of the steel structure, and a step of laterally moving the reinforced steel structure from the adjacent location to the planned construction site of the steel structure to construct the steel structure at the planned construction site of the steel structure. Furthermore, in order to be able to move the steel structure smoothly and straight along the guide rail, as columns, the above-described ordinary steel columns are used, and before the steel structure reinforced with the reinforcing members is laterally moved, between the planned construction site of the steel structure and the adjacent location, a lateral movement path necessary for laterally moving the steel structure and a guide rail extending in parallel with the lateral movement path are provided; a support means connected to the reinforcing members of the steel structure and guided by the guide rail is provided; and when the steel structure is laterally moved on the lateral movement path, the steel structure is laterally moved while being guided by the guide rail. A method comprising the steps may also be used. In this case, the lateral movement path may be a lateral movement path composed of a flat bar or the like as described in Patent Document 1, for example.

[0057] Also, in each embodiment, an example was shown in which a jack for vertical movement was used as the vertical movement means, and the reinforcing member was used as the pressure receiving portion when lifting the main column portion of the column of the steel structure reinforced with the reinforcing member upward (when separating the main column portion upward from the lower end of the column). However, in the present invention, as the column, the above-described ordinary steel column may be used, and the reinforcing member may be used as the pressure receiving portion when lifting the ordinary steel column of the steel structure reinforced with the reinforcing member upward using a jack for vertical movement. Also, when the moving direction of the steel structure is displaced during the operation of moving the steel structure on the lateral movement path, it is also possible to correct the moving direction of the steel structure by pressing the above-described reinforcing member of the steel structure with a horizontal jack (not shown).

[0058] In the present invention, as columns, the above-described ordinary steel columns are used, and after fixing each of the ordinary steel columns of the steel structure reinforced with the reinforcing members to each column foundation at the planned construction site of the steel structure, the reinforcing members are removed, and the removed reinforcing members may be used for other parts of the steel structure or used when constructing a steel structure other than the steel structure.

[0059] In addition, the reinforced steel structure used in the construction method of the steel structure of the present invention includes, as columns, a plurality of the above-described normal steel columns arranged at a predetermined interval, and provided between adjacent normal steel columns. A beam whose both ends are connected to the normal steel columns by joining or the like, and a reinforcing member provided between adjacent normal steel columns and having both ends connected to the lower side of the normal steel columns by joining or the like. It may be configured, and even with such a steel structure, when the steel structure is laterally moved, a reinforced steel structure capable of suppressing distortion, torsion, etc. can be provided. Furthermore, in this case, if it is configured to include a deck plate provided between adjacent beams and connected to these beams by joining or the like, when the steel structure is laterally moved, a reinforced steel structure capable of more effectively suppressing distortion, torsion, etc. can be provided.

[0060] In addition, in the above, as the reinforcing member, as shown in FIG. 1, a reinforcing beam 6 provided between adjacent columns along the moving direction and connected to these columns by joining or the like, and adjacent to each other along the direction orthogonal to the moving direction. The reinforcing beam 6 provided between columns and connected to these columns by joining or the like was exemplified. However, in the present invention, the reinforcing member may be a reinforcing beam provided between diagonally adjacent columns and connected to these columns by joining or the like, or arranged obliquely in the vertical direction between adjacent columns and columns. It may be a reinforcing beam connected to these columns by joining or the like. Also, in the present invention, the reinforcing member may be a member other than a beam, and when connecting the lower sides of adjacent columns of the steel structure to suppress distortion, torsion, etc. when the steel structure is laterally moved. Any member may be used as long as it is a member that can be used.

Explanation of reference numerals

[0061] 2,2S,2M steel structure, 3 columns, 6 reinforcing beams (reinforcing members), 7 lateral movement path, 8 guide rails, 10 column bases, 15 vertical jacks (vertical movement means), 61 beams, 62 deck plates, S movement starting point (adjacent location), E Moving end point (site where steel structure is to be constructed).

Claims

1. A step of reinforcing the steel frame structure by providing a reinforcing member that connects the lower sides of adjacent columns of the steel frame structure constructed at an adjacent location adjacent to the planned construction site of the steel frame structure; A step of horizontally moving the reinforced steel frame structure from the adjacent location to the planned construction site of the steel frame structure and constructing the steel frame structure at the planned construction site of the steel frame structure; Before horizontally moving the reinforced steel frame structure, a horizontal movement path is provided between the adjacent location and the planned construction site of the steel frame structure so as to be located below the columns of the steel frame structure for horizontally moving the steel frame structure, and a guide rail extending parallel to the horizontal movement path is provided; A step of providing a support means connected to the reinforcing member of the steel frame structure and guided by the guide rail; A step of horizontally moving the steel frame structure on the horizontal movement path while being guided by the guide rail; comprising: The guide rail is configured to include a guide rail surface formed in a vertical plane; The support means includes a support beam provided to extend from the reinforcing member toward the guide rail, and a guide roller provided at the lower end side of the support beam and configured to roll on the guide rail surface of the guide rail; The reinforcing member to which the support beam of the support means is connected is a reinforcing beam that connects the lower sides of adjacent columns along a direction orthogonal to the direction in which the steel frame structure is horizontally moved; The support beam is provided to extend downward from the reinforcing beam toward the guide rail, and a construction method of a steel frame structure is characterized in that.

2. The construction method of the steel frame structure according to claim 1, characterized in that the horizontal movement path and the guide rail are provided so as to be separated from each other along a direction orthogonal to the direction in which the steel frame structure is horizontally moved.

3. The construction method of the steel frame structure according to claim 1 or claim 2, characterized in that a friction reduction plate is provided between the lower end of the column of the steel frame structure and the horizontal movement path so as to move the steel frame structure on the horizontal movement path.

4. The construction method of the steel structure according to any one of claims 1 to 3, characterized in that a reinforcing member is used as a bearing pressure part when lifting the reinforced steel structure by the vertical movement means.

5. The construction method of the steel structure according to any one of claims 1 to 4, characterized in that after fixing each column of the reinforced steel structure to each column foundation at the planned construction site of the steel structure, the reinforcing member is removed.

6. The construction method of the steel structure according to claim 5, characterized in that the removed reinforcing member is used for other parts of the steel structure or used when constructing a steel structure other than the steel structure.

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