Method for installing column
The method enhances efficiency and reduces costs by installing wooden pillars after reinforced concrete structures are built, using a nut and rod system to secure wooden pillars between pre-constructed concrete structures, addressing the inefficiencies of mixed-material construction.
Patent Information
- Application Number
- JP2024046342
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-10-03
AI Technical Summary
The construction of reinforced concrete structures with wooden pillars is inefficient and costly due to different materials being handled by different contractors, leading to increased work costs and decreased efficiency.
A method involving the installation of wooden pillars between pre-constructed reinforced concrete structures using a nut and rod system, where the nut is screwed onto a rod fixed to the upper structure, inserted into a through hole in a plate material, and tightened to press the plate against the pillar, followed by mortar filling to secure the pillar in place.
This method improves work efficiency and reduces costs by allowing wooden pillars to be installed after the concrete structures are completed, effectively suppressing creep deformation and transferring load to the columns.
Smart Images
Figure 2025145869000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a method for installing columns that suppress creep deformation of a structure. [Background technology]
[0002] Patent Document 1 discloses a column joint structure in which a wooden column member and a concrete member are joined in the vertical direction. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Publication No. 2022-019358 Summary of the Invention [Problem to be solved by the invention]
[0004] The construction of the reinforced concrete structure and the installation of the wooden pillars are carried out by different contractors, so when parts made of different materials are mixed together, work efficiency can decrease and work costs can increase. The present invention aims to solve such problems, improve work efficiency, and reduce work costs. [Means for solving the problem]
[0005] The nut is screwed onto a rod that is fixed to the upper structure located above the lower structure, protrudes downward from the upper structure, and has a male thread at its tip. The tip end of the rod material onto which the nut is screwed is inserted into a through hole provided in a plate material. A pillar is placed between the plate with the rod inserted into the through-hole and the lower structure. By rotating and tightening the nut threaded onto the rod, the plate with the rod inserted into the through hole is pressed against the upper end surface of the pillar arranged between the lower structure and the plate. Mortar is filled between the plate material, which is pressed and fixed to the upper end surface of the pillar material, and the upper structure, and is then solidified. Creep deformation occurs in the upper structure, and the load of the upper structure is transmitted to the column members. [Effects of the Invention]
[0006] This allows the pillar materials to be installed between the lower structure and the upper structure after the lower structure and the upper structure have been constructed, thereby improving work efficiency and reducing work costs even if the pillar materials are made of a material different from that of the lower structure and the upper structure. [Brief explanation of the drawings]
[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is a perspective view showing an example of an upper plate member. [Figure 5] FIG. [Figure 6] FIG. 10 is a perspective view showing an example of a lower plate member. [Figure 7] FIG. [Figure 8] FIG. 10 is a flow chart showing an example of a pole installation method. [Figure 9] FIG. 10 is a side view showing an example of an adjusting nut installation step. [Figure 10] FIG. 10 is a side view showing an example of a lower plate material installation step. [Figure 11] FIG. 10 is a side view showing an example of an upper plate material installation step. [Figure 12] FIG. 10 is a side view showing an example of a pillar installation process and a lower end fixing process. [Figure 13] FIG. 10 is a side view showing an example of an adjusting nut tightening step. [Figure 14] FIG. [Figure 15] FIG. 10 is a side view showing an example of a front nut tightening step. [Figure 16] FIG. [Figure 17] FIG. 10 is a side view showing an example of a mortar filling step. DETAILED DESCRIPTION OF THE INVENTION
[0008] The upper structure 10 will be described with reference to FIG. The superstructure 10 is, for example, part of the skeleton of a reinforced concrete (RC) building, and is a structure that needs to suppress creep deformation due to long-term load, such as a cantilever structure such as a cantilever beam or a cantilever slab, or a long-span beam. The superstructure 10 includes, for example, a concrete body 11 and anchor bolts 12a to 12d. Anchor bolts 12a to 12d are cylindrical rods that protrude downward (in the -Z direction) from the lower (-Z side) surface of concrete body 11. Anchor bolts 12a to 12d are provided with male threads that screw into nuts at least at their tips on the -Z side. Anchor bolts 12a to 12d are arranged at positions that correspond to bolt holes 32a to 32d in plate material 30 (see Figures 4 and 5), which will be described later.
[0009] The lower structure 20 will be described with reference to FIG. The lower structure 20 is, for example, part of the same building skeleton as the upper structure 10, and is located below (in the -Z direction) the upper structure 10. The lower structure 20 is, for example, a beam or slab on a floor below the upper structure 10. The lower structure 20 has, for example, a concrete body 21, anchor bolts 22a to 22d, and an adjustment plate 23. Anchor bolts 22a to 22d are cylindrical rods that protrude upward (in the +Z direction) from the upper (+Z side) surface of concrete body 21. Anchor bolts 22a to 22d are provided with male threads that screw into nuts at least at their tips on the +Z side. Anchor bolts 22a to 22d are arranged at positions that correspond to bolt holes 42a to 42d of plate material 40 (see FIGS. 6 and 7), which will be described later. The adjustment plate 23 is, for example, a rectangular plate, and is embedded in the concrete body 21 with its upper (+Z side) surface (top surface) exposed. The adjustment plate 23 is approximately the same size as a base plate 41 (described later) of the plate material 40, and abuts against the base plate 41. The adjusting plate 23 may be omitted.
[0010] The lower structure 20 may be cantilevered and may have anchor bolts protruding from the lower surface, similar to the upper structure 10. In this case, what protrudes from the lower surface of the lower structure 20 may be the -Z side ends of the anchor bolts 22a to 22d, or may be anchor bolts provided separately from the anchor bolts 22a to 22d.
[0011] The pillar material 50 will be described with reference to FIG. The pillars 50 are, for example, rectangular pillars, and are arranged between the upper structure 10 and the lower structure 20 substantially parallel to the ±Z direction, and provide auxiliary support for the upper structure 10 to suppress creep deformation of the upper structure 10 due to long-term load. The pillars 50 are made of a material, such as wood, different from the upper structure 10 and the lower structure 20. The pillars 50 have, for example, wooden pillars 51a and 51b.
[0012] The wooden post 51a is, for example, a square post, and has, for example, grooves 52a and 53a and through holes 54a to 54f and 55a to 55f. The groove 52a is recessed downward (-Z direction) from the surface (upper end surface) of the upper side (+Z side) of the wooden pillar 51a, and extends approximately parallel to the ±Y directions. The groove 53a is recessed upward (in the +Z direction) from the surface (lower end surface) on the lower side (-Z side) of the wooden post 51a, and extends substantially parallel to the ±Y directions. The through holes 54a to 54f are provided near the upper (+Z side) end of the wooden pillar 51a and penetrate the wooden pillar 51a approximately parallel to the ±X directions. The through holes 54a to 54f are spaced apart in the ±Y directions and arranged approximately in a straight line, penetrating the groove 52a. Through holes 55a-55f are provided near the end of the lower side (-Z side) of wooden pillar 51a and penetrate wooden pillar 51a approximately parallel to the ±X directions. Through holes 55a-55f are arranged in a line spaced apart from each other in the ±Y directions and penetrate groove 53a. Similarly, the wooden post 51b has, for example, grooves 52b and 53b and through holes 54g to 54l and 55g to 55l (not shown). The through holes 54g to 54l and 55g to 55l are arranged in positions that communicate with the through holes 54a to 54f and 55a to 54f in a straight line.
[0013] The plate material 30 will be described with reference to FIGS. The plate material 30 is a member for fixing the column material 50 to the upper structure 10, and is disposed between the upper structure 10 and the column material 50. The plate material 30 is made of, for example, steel. The plate material 30 has, for example, a base plate 31, gusset plates 33a and 33b, and a rib plate 35.
[0014] The base plate 31 is, for example, a substantially rectangular plate, and is disposed substantially perpendicular to the ±Z directions. The length of the base plate 31 in the ±Y directions is substantially equal to the length of the upper end face of the pillar 50 in the ±Y directions. The length of the base plate 31 in the ±X directions is longer than the length of the upper end face of the pillar 50 in the ±X directions. The base plate 31 has, for example, bolt holes 32a to 32d. The bolt holes 32a to 32d are, for example, disposed near the four corners of the base plate 31 and are through-holes that penetrate the base plate 31 substantially parallel to the ±Z directions. The distance in the ±X directions between the bolt holes 32a and 32b and the bolt holes 32c and 32d is longer than the length of the upper end face of the pillar 50 in the ±X directions. In other words, the bolt holes 32a to 32d are provided in portions that protrude from the upper end face of the pillar 50 in the ±X directions when the upper end face of the pillar 50 abuts against the lower surface of the base plate 31. The length of the base plate 31 in the ±Y directions may be longer than the length of the upper end surface of the pillar 50 in the ±Y directions.
[0015] The gusset plates 33a and 33b are, for example, substantially rectangular plates and are fixed to the base plate 31 substantially perpendicular to the ±X directions. The gusset plates 33a and 33b extend downward (in the -Z direction) from the lower (-Z side) surface (bottom surface) of the base plate 31 and substantially parallel to the ±Y directions. The gusset plates 33a and 33b are arranged side by side and spaced apart in the ±X directions. The gusset plate 33a is provided at a position corresponding to the groove 52a of the pillar 50, and has, for example, through holes 34a-34f. The through holes 34a-34f penetrate the gusset plate 33a substantially parallel to the ±X directions. The through holes 34a-34f are provided at positions corresponding to the through holes 54a-54f of the pillar 50, and are arranged in a substantially straight line, spaced apart in the ±Y directions. Similarly, gusset plate 33b is provided at a position corresponding to groove 52b of pillar 50 and has, for example, through holes 34g-34l. Through holes 34g-34l pass through gusset plate 33b substantially parallel to the ±X directions. Through holes 34g-34l are provided at positions corresponding to through holes 54g-54l of pillar 50 and are spaced apart in the ±Y directions and arranged substantially in a straight line.
[0016] The rib plate 35 has, for example, a substantially rectangular plate shape and is fixed to the base plate 31 substantially perpendicular to the ±Y directions. The rib plate 35 extends upward (in the +Z direction) from the upper (+Z side) surface (top surface) of the base plate 31 and extends substantially parallel to the ±X directions. The rib plate 35 is disposed in substantially the center of the base plate 31 in the ±Y directions. The rib plate 35 may be omitted.
[0017] The plate material 40 will be described with reference to FIGS. The plate material 40 is a member for fixing the column material 50 to the lower structure 20, and is disposed between the lower structure 20 and the column material 50. The plate material 40 is made of, for example, steel. The plate material 40 has, for example, a base plate 41 and gusset plates 43a and 43b.
[0018] The base plate 41 has, for example, a substantially rectangular plate shape and is disposed substantially perpendicular to the ±Z directions. The length of the base plate 41 in the ±Y directions is substantially equal to the length of the lower end face of the pillar 50 in the ±Y directions. The length of the base plate 41 in the ±X directions is longer than the length of the lower end face of the pillar 50 in the ±X directions. The base plate 41 has, for example, bolt holes 42a to 42d. The bolt holes 42a to 42d are, for example, disposed near the four corners of the base plate 41 and are through-holes that penetrate the base plate 41 substantially parallel to the ±Z directions. The distance in the ±X directions between the bolt holes 42a and 42b and the bolt holes 42c and 42d is longer than the length of the lower end face of the pillar 50 in the ±X directions. In other words, the bolt holes 42a to 42d are provided in portions that protrude in the ±X directions from the lower end face of the pillar 50 when the lower end face of the pillar 50 abuts against the upper surface of the base plate 41. The length of the base plate 41 in the ±Y directions may be longer than the length of the lower end surface of the pillar 50 in the ±Y directions.
[0019] The gusset plates 43a and 43b are, for example, substantially rectangular plates and are fixed to the base plate 31 substantially perpendicular to the ±X directions. The gusset plates 43a and 43b extend upward (in the +Z direction) from the upper (+Z side) surface (top surface) of the base plate 41 and substantially parallel to the ±Y directions. The gusset plates 43a and 43b are arranged side by side and spaced apart in the ±X directions. The gusset plate 43a is provided at a position corresponding to the groove 53a of the pillar material 50, and has, for example, through holes 44a to 44f. The through holes 44a to 44f penetrate the gusset plate 43a substantially parallel to the ±X directions. The through holes 44a to 44f are provided at positions corresponding to the through holes 55a to 55f of the pillar material 50, and are arranged in a substantially straight line, spaced apart in the ±Y directions. Similarly, gusset plate 43b is provided at a position corresponding to groove 53b of pillar 50 and has, for example, through holes 44g-44l. Through holes 44g-44l pass through gusset plate 43b approximately parallel to the ±X directions. Through holes 44g-44l are provided at positions corresponding to through holes 55g-55l of pillar 50 and are arranged in a line spaced apart in the ±Y directions.
[0020] Referring to FIG. 8, a pole installation method 90 will be described. In the pillar installation method 90, a pillar material 50 is installed between the upper structure 10 and the lower structure 20.
[0021] In a reinforced concrete building, the framework is constructed floor by floor, starting from the bottom floor. For example, the substructure 20 is constructed first, and then the superstructure 10 is constructed on the columns constructed above it. If the columns are made of the same reinforced concrete as the upper structure 10 and the lower structure 20, the columns can be constructed at the same time as the upper structure 10 or the lower structure 20. However, if the columns are made of a material different from that of the upper structure 10 and the lower structure 20, they cannot be constructed together with the upper structure 10 and the lower structure 20, and therefore must be installed in a separate process from the upper structure 10 and the lower structure 20.
[0022] Here, as in the case where the columns are made of reinforced concrete, if construction is carried out in the order of first constructing the substructure 20, installing the columns on top of it, and then constructing the superstructure 10, the process of installing the columns may become a bottleneck. In particular, if similar columns are to be installed on each floor, the process of building the reinforced concrete and the process of installing the columns must be repeated alternately. The workers who install the columns are in a different industry from the workers who build the reinforced concrete, and each time the process of installing a column occurs, they will need to visit the building construction site.
[0023] Therefore, in this embodiment, construction is carried out in the following order: first, the substructure 20 is constructed, then the upper structure 10 is constructed on top of that, and then the columns are installed. This allows construction of the reinforced concrete section to proceed without waiting for the columns to be installed, allowing work to proceed smoothly. Furthermore, even when installing similar columns on each floor, the workers installing the columns can simply install columns made of different materials after the construction of the reinforced concrete section is completed, eliminating the need to visit the construction site multiple times.
[0024] As mentioned above, the columns 50 are installed as auxiliary measures to suppress creep deformation of the superstructure 10 due to long-term load, so there is no problem if the columns 50 are not installed for a short period of time until the construction of the reinforced concrete portion is completed. Alternatively, temporary columns may be installed in place of the columns 50 to support the superstructure 10 until the columns 50 are installed.
[0025] The pillar installation method 90, for example, includes an adjustment nut installation process 91, an upper plate installation process 92, a lower plate installation process 93, a pillar installation process 94, a lower end fixing process 95, an adjustment nut tightening process 96, a front nut tightening process 97, an upper end fixing process 98, and a mortar filling process 99. In the pillar installation method 90, first, an adjustment nut installation step 91, an upper plate installation step 92, and a lower plate installation step 93 are performed. Either of the adjustment nut installation step 91, the upper plate installation step 92, and the lower plate installation step 93 may be performed first, or they may be performed in parallel.
[0026] Referring to FIG. 9, an adjusting nut installation step 91 will be described. In the adjustment nut installation process 91, nuts 61a to 61d (nuts 61b and 61c are not shown) are screwed onto the male threads provided on the anchor bolts 12a to 12d of the upper structure 10, and the nuts 61a to 61d are attached to the anchor bolts 12a to 12d. Note that in order to ensure work space in the pillar installation process 94, the nuts 61a to 61d are positioned higher (in the +Z direction) than their final positions (see FIG. 17). Thereafter, the upper plate installation step 92 is carried out.
[0027] The upper plate installation step 92 will be described with reference to FIG. In an upper plate installation step 92, the anchor bolts 12a to 12d of the upper structure 10, onto which the nuts 61a to 61d were screwed in the adjustment nut installation step 91, are inserted into the bolt holes 32a to 32d of the plate 30, and the plate 30 is installed. Then, to prevent the plate 30 from falling, nuts 63a to 63d and 64a to 64d (nuts 63b and 63c and 64b and 64c are not shown) are screwed onto the tip portions of the anchor bolts 12a to 12d inserted into the bolt holes 32a to 32d of the plate 30, and the nuts 63a to 63d and 64a to 64d are attached. Note that, to ensure work space in the column installation step 94, the nuts 63a to 63d and 64a to 64d are positioned higher (in the +Z direction) than their final positions (see FIG. 17). As a result, the plate 30 is held at a position higher than its final position.
[0028] Referring to FIG. 11, the lower plate installation step 93 will be described. In a lower plate installation process 93, the anchor bolts 22a to 22d of the lower structural body 20 are inserted into the bolt holes 42a to 42d of the plate 40, and the plate 40 is installed on the lower structural body 20. Then, nuts 65a to 65d and 66a to 66d (nuts 65b, 65c, 66b, and 66c are not shown) are screwed onto the male threads provided on the anchor bolts 22a to 22d, and the plate 40 is fixed to the lower structural body 20.
[0029] Referring to FIG. 12, a pillar installation step 94 and a lower end fixing step 95 will be described. The pillar material installation step 94 is carried out after both the upper plate material installation step 92 and the lower plate material installation step 93 have been completed. In a pillar member installation step 94, the pillar member 50 is installed between the plate member 30 installed in the upper plate member installation step 92 and the plate member 40 installed in the lower plate member installation step 93. The pillar member 50 is slid between the plates 30 and 40 from the +Y direction (or the -Y direction) so that the gusset plates 43a and 43b of the plate member 40 are inserted into the grooves 53a and 53b of the pillar member 50, and the gusset plates 33a and 33b of the plate member 30 are inserted into the grooves 52a and 53b of the pillar member 50. Furthermore, bolt holes 32a to 32d of plate 30 and bolt holes 42a to 42d of plate 40 are provided in portions that extend beyond the upper and lower end faces of pillar 50 in the ±X direction, so that when pillar 50 is slid in the ±Y direction, anchor bolts 12a to 12d and 22a to 22d inserted through bolt holes 32a to 32d and 42a to 42d and nuts 63a to 63d, 64a to 64d, 65a to 65d and 66a to 66d threaded onto anchor bolts 12a to 12d and 22a to 22d do not get in the way. Thereafter, a lower end fixing step 95 is carried out.
[0030] In a lower end fixing process 95, the through holes 55a to 55l of the pillar 50 are aligned with the through holes 44a to 44l of the plate 40, and the drift pins 73a to 73f (drift pins 73b to 73f are not shown) are driven into and fitted into the through holes 55a to 55f of the pillar 50, and penetrate through the through holes 44a to 44f of the gusset plate 43a. Similarly, the drift pins 73g to 73l (drift pins 73g to 73k are not shown) are driven into and fitted into the through holes 55g to 55l of the pillar 50, and penetrate through the through holes 44g to 44l of the gusset plate 43b. This fixes the pillar 50 to the plate 40 and the lower structure 20. The entrances of the through holes 55a to 55l into which the drift pins 73a to 73l are driven may be blocked with wooden plugs or the like so that the drift pins 73a to 73l cannot be seen from the outside. Thereafter, an adjusting nut tightening step 96 is carried out.
[0031] Referring to FIG. 13, the adjusting nut tightening step 96 will be described. In the adjustment nut tightening process 96, first, the nuts 63a to 63d and 64a to 64d supporting the plate material 30 are loosened, and the plate material 30 is lowered to a position lower (in the -Z direction) than the final position. As a result, the plate material 30 moves downward (in the -Z direction), and the lower surface of the base plate 31 of the plate material 30 comes into contact with the upper end surface of the pillar material 50.
[0032] Referring to FIG. 14, the description of the adjusting nut tightening step 96 continues. Then, by rotating the nuts 61a to 61d and moving them downward (in the -Z direction) and tightening them, the lower surface of the base plate 31 of the plate material 30 is pressed against the upper end surface of the pillar material 50. As a result, the lower surface of the base plate 31 comes into complete contact with the upper end surface of the pillar material 50, and a slight compressive force is applied to the pillar material 50 along the ±Z directions. Thereafter, a front nut tightening step 97 is carried out.
[0033] Referring to FIG. 15, the front nut tightening step 97 will be described. In a front nut tightening process 97, the nuts 63a to 63d and 64a to 64d are rotated and moved upward (in the +Z direction) to be tightened, thereby fixing the plate material 30 in place. Thereafter, the upper end fixing step 98 is carried out.
[0034] The upper end fixing step 98 will be described with reference to FIG. In an upper end fixing process 98, the through holes 54a to 54l of the pillar 50 are aligned with the through holes 34a to 34l of the plate 30, and the drift pins 72a to 72f (drift pins 72b to 72f are not shown) are driven into and fitted into the through holes 54a to 54f of the pillar 50, and pass through the through holes 34a to 34f of the gusset plate 33a. Similarly, the drift pins 72g to 72l (drift pins 72g to 72k are not shown) are driven into and fitted into the through holes 54g to 54l of the pillar 50, and pass through the through holes 34g to 34l of the gusset plate 33b. This fixes the pillar 50 to the plate 30. The entrances of the through holes 54a to 54l into which the drift pins 72a to 72l are driven may be blocked with wooden plugs or the like so that the drift pins 72a to 72l cannot be seen from the outside. Thereafter, a mortar filling step 99 is carried out.
[0035] The mortar filling step 99 will be described with reference to FIG. In the mortar filling step 99, mortar 81 such as non-shrink mortar is filled into the gap between the underside of the concrete body 11 of the upper structure 10 and the upper surface of the base plate 31 of the plate material 30 and allowed to harden.
[0036] In this manner, a pillar composed of mortar 81, plate material 30, pillar material 50, and plate material 40 is installed between upper structure 10 and lower structure 20, and supports upper structure 10.
[0037] Then, as time passes, the upper structure 10 undergoes creep deformation and bends slightly downward (in the -Z direction). This causes a compressive force to act on the columns, which then elastically deform, generating a repulsive force that supports the upper structure 10 to prevent further creep deformation. This makes it possible to suppress creep deformation of the upper structure 10.
[0038] By installing auxiliary columns consisting mainly of column materials 50 using the above procedure, the work of installing the columns supporting the upper structure 10 can be carried out after the construction of the lower structure 20 and the upper structure 10 is completed, rather than between the work of constructing the lower structure 20 and the work of constructing the upper structure 10. This can improve work efficiency and reduce work costs.
[0039] This pillar installation method may also be performed upside down. That is, an upside-down plate 40 is placed on the top and fixed to the upper structure 10, and an upside-down plate 30 is placed on the bottom. Then, pillar 50 is fixed to the upper structure 10 via plate 40, and plate 30 is fixed to pillar 50, and mortar 81 is filled between plate 30 and lower structure 20 and allowed to harden. This method also provides the same effect as the above-mentioned pole installation method.
[0040] The above-described embodiment is an example for facilitating understanding of the present invention. The present invention is not limited thereto, and includes various modifications, changes, additions, or omissions without departing from the scope defined by the appended claims. This can be easily understood by those skilled in the art from the above description.
[0041] For example, in a reinforced concrete office building, if there is a cantilever slab at the corner of the building with a maximum cantilever length exceeding 3.7m, the challenge is to keep the deflection of creep deformation due to long-term load to 1 / 250 or less, as stipulated by the Building Standards Act. Also, in recent years, the construction industry has been required to promote the use of wood due to the social background of moving towards a low-carbon society. With this in mind, wooden columns are installed to suppress creep deformation of the cantilever slab. Conventionally, components that bear long-term loads are installed at the same time as the installation floor is constructed. When placing wooden studs during concrete pouring to support long-term loads, the manufacturing process of the wooden studs becomes critical in the construction process if the wooden studs are placed when the concrete framework is poured. Also, during RC framework construction, wood specialists, a different industry, will need to visit the site multiple times to work on small quantities of timber for each floor, which increases costs in terms of manpower. In contrast, with this method, wooden columns placed after the RC frame of the installation floor is constructed bear the long-term load. (1) Leave a gap between the base plate (hereinafter referred to as BPL) of the column head (or column base) and the slab or beam, and install a nut on the back of the BPL (hereinafter referred to as the adjustment nut). (2) When installing the pillar, the BPL should be able to move up and down, and the wooden pillar should be slid in from the side. (3) After the pillar is installed, turn the adjustment nut and tighten it so that the wooden pillar and BPL are in complete contact. (4) Tighten the nut on the column side of the column head to secure it in place, and fill the gap between the BPL and the slab (or beam) with mortar. (5) Creep deformation of the slab transfers long-term loads to the wooden columns. [Explanation of symbols]
[0042] 10 Upper structure, 11, 21 Concrete body, 12a to 12d, 22a to 22d Anchor bolt, 20 Lower structure, 23 Adjustment plate, 30, 40 Plate material, 31, 41 Base plate, 32a to 32d, 42a to 42d Bolt hole, 33a, 33b, 43a, 43b Gusset plate, 34a to 34l, 44a to 44l, 54a to 54l, 55a to 55l Through hole, 35 Rib plate, 50 Column material, 51a, 51b Wooden column, 52a, 52b, 53a, 53b Groove, 61a to 61d, 63a to 63d, 64a to 64d, 65a to 65d, 66a to 66d Nut, 72a to 72l, 73a to 73l Drift pin, 81 Mortar, 90 Pillar installation method, 91 Adjustment nut installation process, 92 Upper plate installation process, 93 Lower plate installation process, 94 Pillar installation process, 95 Lower end fixing process, 96 Adjustment nut tightening process, 97 Top nut tightening process, 98 Upper end fixing process, 99 Mortar filling process.
Claims
1. A rod member is fixed to an upper structure located above the lower structure, protrudes downward from the upper structure, and has a male thread at its tip end. A nut is screwed onto the rod member. A tip portion of the rod material to which the nut is screwed is inserted into a through hole provided in a plate material, a pillar member is disposed between the plate member with the rod member inserted into the through hole and the lower structure; By rotating and tightening the nut threaded onto the rod, the plate material with the rod material inserted into the through hole is pressed against the upper end surface of the pillar material arranged between the lower structure and the plate material, Filling and solidifying mortar between the plate material pressed and fixed to the upper end surface of the pillar material and the upper structure, When creep deformation occurs in the upper structure, the load of the upper structure is transmitted to the column member. Pillar installation method.
2. the plate member has a portion that protrudes laterally from the upper end surface of the pillar member, The through hole is provided in the portion that protrudes laterally from the upper end surface of the pillar material. The pole installation method of claim 1.
3. A rod member is fixed to a lower structure located below the upper structure, protrudes upward from the lower structure, and has a male thread at its tip end. A nut is screwed onto the rod member. A tip portion of the rod material to which the nut is screwed is inserted into a through hole provided in a plate material, a pillar member is disposed between the plate member with the rod member inserted into the through hole and the upper structure; By rotating and tightening the nut threaded onto the rod, the plate with the rod inserted into the through hole is pressed against the lower end surface of the pillar arranged between the upper structure and the plate, and fixed; Filling and solidifying mortar between the plate material pressed and fixed to the lower end surface of the pillar material and the lower structure, When creep deformation occurs in the upper structure, the load of the upper structure is transmitted to the column member. Pillar installation method.
4. The plate material has a portion that protrudes laterally from a lower end surface of the pillar material, The through hole is provided in the portion that protrudes laterally from the lower end surface of the pillar material. The pole installation method according to claim 3.
5. The substructure and the superstructure are made of concrete, The pillars are made of wood. A pole installation method according to any one of claims 1 to 4.
Citation Information
Patent Citations
Column joint structure and column beam joint structure
JP2022019358A