JP2012237129A - Base plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base plate which allows for easy positioning of the lower end of a vertical member, with enhanced workability, productivity, and installation accuracy.SOLUTION: A base plate fastened to the lower end of a vertical member 13 formed of a lip channel steel erected on a horizontal member 12 by welding comprises a board part 2 having a bolt insertion hole 22 through which an anchor bolt 23 projecting from the horizontal member 12 is inserted, a rising wall part 3 which rises from a top face 2a of the board part to a predetermined height along the inner peripheral surface of the lower end of the vertical member 13, and weld gap setting pedestal parts 4 and 5 which rise from the board part 2 to a height lower than the rising wall part 3, at a plurality of places on the outer peripheral side of the rising wall part 3, for setting a weld gap S for groove welding of the lower end face 13o of the vertical member and the top face 2a of the board part in a state that the lower end of the vertical member 13 is fitted on the rising wall part 3.

Description

  The present invention relates to a base plate that is fixed to a lower end portion of a vertical member made of a lip groove steel standing on a horizontal member of a foundation by welding, for example, in a lightweight steel frame prefabricated building.

  (A) of FIG. 7 shows the load-bearing wall component frame 18 in a lightweight steel frame prefabricated building. The load bearing wall constituting frame 18 is formed by connecting upper and lower vertical frame members (vertical members) 13, 13 made of lip groove steel with upper horizontal frame members 14 and intermediate portions with intermediate horizontal frame members 15. The lower end frame members 16 are connected to each other by lower horizontal frame members 16, and a pair of braces 17, 17 are arranged in an X shape between the vertical frame members (vertical members) 13, 13. As shown in (b), the base horizontal member 12 is inserted into the bolt insertion hole 22 (see (a) to (c) of FIG. 8) of the base plate 21 attached to the lower ends of the left and right vertical frame members (vertical members) 13. An anchor bolt 23 (see FIG. 8C) protruding from the upper surface is inserted and tightened with a nut 24 (see FIG. 8C) to stand upright on the horizontal member 12. .

  The conventional base plate 21 attached to the lower end portion of the vertical frame member (vertical member) 13 of the bearing wall constituting frame 27 is a steel formed in a rectangular thick plate shape as shown in FIGS. 8 (a) to (c). The plate body 20 is made of metal, and is provided in a required portion of the plate body 20 so as to penetrate the anchor bolt insertion hole 22 vertically, and a slope 25 for welding groove is formed along the three ridge lines on the upper surface side. doing. The vertical frame member (vertical member) 13 is made of lip groove steel as shown in (a) to (c). To attach the base plate 21 to the lower end of the vertical frame member 13, the vertical frame member 13 is mounted on the plate body 20. By performing groove welding along the weld groove formed between the lower end surface of the vertical frame member 13 and the welding groove slope 25 of the base plate 21 with the lower end surface of the vertical frame member 13 being placed. (The welded portion is indicated by W), and the base plate 21 is fixed to the lower end portion of the vertical frame member 13.

  In the conventional base plate 21, the plate 21 is attached to the lower end of the vertical frame member 13, which is a vertical member, as shown in FIG. The base plate 21 is groove-welded with the lower end surface of the vertical frame member 13 in a state where the end surface is placed. However, it is very difficult to position the lower end portion of the vertical frame member 13 with respect to a predetermined position on the upper surface of the plate body 20. For this reason, this has lowered workability and productivity, and has caused the base plate mounting accuracy to deteriorate.

  In view of the above circumstances, an object of the present invention is to provide a base plate in which positioning of a lower end portion of a vertical member is easy and workability / productivity, welding strength, and mounting accuracy can be improved.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is a vertical member 13 made of a lip channel steel standing on a horizontal member 12. The base plate is fixed to the lower end of the base plate 2 by welding. The base plate 2 has the anchor bolt insertion hole 22 and the standing upright from the upper surface 2a of the base plate portion along the inner peripheral surface of the lower end of the vertical member 13. The upper wall 3 and a plurality of locations on the outer peripheral side of the rising wall 3 rise from the substrate 2 lower than the rising wall 3, and the lower end of the vertical member 13 is externally fitted to the rising wall 3. It is characterized by comprising welding gap setting pedestal portions 4 and 5 for setting a welding gap S for groove welding the vertical material lower end surface 13o and the substrate portion upper surface 2a.

  According to a second aspect of the present invention, in the base plate according to the first aspect, the rising wall portion 3 is formed so as to extend continuously or intermittently along the inner periphery of the lower end portion of the vertical member 13 that is externally fitted thereto. It is characterized by that.

  According to a third aspect of the present invention, in the base plate according to the first or second aspect, the rising wall portion 3 is formed in a substantially U shape in a plan view.

  According to a fourth aspect of the present invention, in the base plate according to any one of the first to third aspects, the rising wall portion 3 formed so as to extend intermittently along the inner periphery of the lower end portion of the vertical member 13 is the rising wall portion 3. The bottom surface 6a of the groove portion 6 is flush with the top surface 2a of the substrate portion 2 or the substrate portion. 2 is formed so as to be lower than the upper surface 2a.

  According to a fifth aspect of the present invention, in the base plate according to any one of the first to fourth aspects, the anchor bolt insertion hole 22 of the substrate portion 2 is formed in a taper that gradually increases in diameter from the upper side to the lower side. It is characterized by being.

  A sixth aspect of the present invention is the base plate according to any one of the first to fifth aspects, wherein the rising height h1 of the rising wall portion 3 is about twice the thickness t of the vertical member 13 made of lip channel steel. It is characterized by that.

  A seventh aspect of the present invention is the base plate according to any one of the first to sixth aspects, wherein the rising height h2 of the base portions 4 and 5 for setting the welding gap is about the plate thickness t of the vertical member 13 made of lip channel steel. It is characterized by being 1 to 1.5 times.

  An eighth aspect of the present invention is the base plate according to any one of the first to seventh aspects, wherein the rising wall portion 3 has an upper end portion 3a of an outer side surface formed in an inward inclined surface shape.

  A ninth aspect is characterized in that in the base plate according to any one of the first to eighth aspects, the base plate 1 is integrally formed of a welded structural cast steel.

  A tenth aspect of the present invention is the base plate according to any one of the first to ninth aspects, wherein the entire base plate 1 is hot dip galvanized or electrogalvanized.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. The base plate 1 of the invention according to claim 1 includes a base plate portion 2 having an anchor bolt insertion hole 22 and a vertical member 13. The rising wall portion 3 rising from the upper surface 2a of the substrate portion to a predetermined height along the inner peripheral surface of the lower end portion, and rising lower than the rising wall portion 3 from the substrate portion 2 at a plurality of locations on the outer peripheral side of the rising wall portion 3 A welding gap setting pedestal for setting a welding gap S for groove welding the vertical material lower end surface 13o and the substrate portion upper surface 2a in a state where the lower end portion of the vertical material 13 is externally fitted to the upright wall portion 3. 4 and 5, when the base plate 1 is welded to the lower end portion of the vertical member 13, the lower end portion of the vertical member 13 is externally fitted to the upright wall portion 3 while the base plate 1 is fixed. Lower end surface 13o for welding gap setting Only placed on seat portions 4 and 5, it is possible to position the lower end of the vertical member 13, the instantaneous welding position with respect to the base plate 1. In this welding position, the lower end portion of the vertical member 13 is supported on the inner peripheral surface side thereof by the rising wall portion 3 of the base plate 1, and a backing material for welding is formed by the rising wall portion 3. Since a welding gap S is formed between the lower end surface 13o of the material 13 and the substrate portion upper surface 2a of the base plate 1, by performing groove welding on the welding gap S between the lower end surface 13o of the vertical material and the substrate portion upper surface 2a, By joining the lower end portion of the vertical member 13, the rising wall portion 3 of the base plate 1, the base portions 4 and 5 for setting the welding gap, and the substrate portion 2, the base plate 1 is accurately aligned with the lower end portion of the vertical member 13. And it can adhere firmly. Therefore, according to the base plate 1 of the present invention, the lower end portion of the vertical member 13 can be easily positioned, and stable groove welding with the lower end portion of the vertical member 13 becomes possible. The mounting accuracy can be significantly improved.

  According to the invention of claim 2, the rising wall portion 3 may be formed so as to extend continuously along the inner periphery of the lower end portion of the vertical member 13 or may be formed so as to extend intermittently. As long as the shape of the upright wall portion 3 in plan view is a shape extending along the inner periphery of the vertical member 13 so as to support the inner peripheral surface of the lower end portion, the U-shape in plan view, the rectangular frame shape in plan view, etc. Any shape is acceptable.

  According to the invention of claim 3, the rising wall portion 3 is preferably formed in a substantially U-shape in plan view. That is, the upright wall portion 3 can be formed in a rectangular frame shape with a four-sided wall, for example, but a portion corresponding to the web portion 13a of the vertical member 13 as shown in FIG. If the portion corresponding to both flange portions 13b and 13b is formed in a substantially U-shape, the structure is simple, so that the manufacturing is easy and the cost can be reduced.

  Further, when the upright wall portion 3 is substantially U-shaped in a plan view, portions corresponding to the respective corner portions of the web portion 13a and the flange portions 13b and 13b of the vertical member 13 are cut out to form the upright wall portion. If the groove portion 6 is formed so as to cross the substrate 3 so as to cross the substrate portion 2, the lower end portion of the vertical member 13 can be easily fitted to the upright wall portion 3. In other words, the lip channel steel as the vertical member 13 has a rounded corner portion between the web portion 13a and the flange portion 13b, and the rounded portion has variations due to manufacturing errors, so that the rising wall portion 3 is continuous. If the shape is a U-shape, the fitting of the corner portion on the vertical member 13 side to the corner portion on the rising wall portion 3 side is poor, and the fitting operation becomes difficult.

  As in the invention according to claim 4, the rising wall portion 3 formed so as to extend intermittently along the circumferential direction of the vertical member 13 crosses the required portion of the rising wall portion 3 and the substrate portion 2. When the base plate 1 is attached to the lower end of the vertical member 13 used as the vertical frame member of the load-bearing wall constituting frame 18 shown in FIG. When the entire frame 18 is subjected to the plating process or the electrodeposition coating process, the plating liquid or the electrodeposition coating liquid can be smoothly discharged from the groove 6, so that the plating liquid or the portion surrounded by the base plate 1 and the vertical member 13 can be removed. The electrodeposition coating liquid does not remain, and the plating process or the electrodeposition coating process becomes easy. In this case, if the bottom surface 6a of the groove portion 6 is formed to be lower than the upper surface 2a of the substrate portion 2, the plating solution or the electrodeposition coating solution can be more easily discharged. Further, a portion of the rising wall portion 3 corresponding to each corner portion of the web portion 13a and the flange portions 13b and 13b of the vertical member 13 is cut out so as to cross the rising wall portion 3. In the case of an intermittent U-shape in which the groove portion 6 that goes out of 2 is formed, it is easy to fit the lower end portion of the vertical member 13 to the rising wall portion 3.

  According to the fifth aspect of the present invention, the anchor bolt insertion hole 22 of the base plate portion 2 is formed in a taper that gradually increases in diameter from the upper side to the lower side, so that the anchor bolt 23 is fitted and inserted. When it is made to fit, the fitting becomes easy.

  According to the sixth aspect of the present invention, the rising height h1 of the rising wall portion 3 is preferably 2 to 3 times the plate thickness t of the vertical member 13 made of lip groove steel. This is because the upright wall portion 3 functions as a positioning guide when the lower end portion of the vertical member 13 is externally fitted, and the vertical member lower end surface 13o and the substrate portion upper surface 2a are groove-welded at a predetermined welding gap S. Therefore, if the rising height h1 is not more than twice the plate thickness t of the vertical member 13, for example, about 1 to 1.5 times, it will be insufficient as a positioning guide, and the plate thickness t or less. In this case, the function as a positioning guide and the function as a backing material do not change so much even if the rising height h1 is set to be three times or more the plate thickness t of the vertical material 13, so that the material is wasted. This is because the production cost is high.

  According to the seventh aspect of the invention, the rising height h2 of the welding gap setting pedestals 4 and 5 is preferably 1 to 1.5 times the plate thickness t of the vertical member 13 made of lip groove steel. That is, when the rising height h2 is equal to or less than the plate thickness t of the vertical member 13, the welding gap S for groove welding becomes small and welding is insufficient, and the rising height h2 is 1 of the plate thickness t of the vertical member 13. This is because if the height is more than 5 times, the welding gap S becomes large and proper welding cannot be performed.

  According to the invention according to claim 8, since the upper end 3a of the outer side surface of the rising wall 3 is formed in an inwardly inclined surface shape, the lower end of the vertical member 13 is removed from the rising wall 3. When fitting, the fitting becomes easy.

  According to the ninth aspect of the present invention, the base plate 1 is a casting that is integrally formed of cast steel for welded structure, so that mass production is possible, and the cost can be greatly reduced. 13 can be easily and satisfactorily welded. .

  According to the invention which concerns on Claim 10, since hot dip galvanization or electrogalvanization is given to the whole baseplate 1, generation | occurrence | production of rust is prevented and the baseplate 1 can be used effectively over many years.

It is a perspective view which shows the baseplate which concerns on one Embodiment of this invention. (a) is a plan view of the base plate, and (b) is a cross-sectional view taken along line AA of (a). 2A is a cross-sectional view taken along the line BB of FIG. 2A, FIG. 2B is a cross-sectional view taken along the line CC of FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line DD of FIG. It is line sectional drawing. (a) shows a state in which the base plate is welded to the lower end portion of the vertical member, and is a cross-sectional view corresponding to (b) in FIG. 2, and (b) shows the welding state, and (a) in FIG. It is sectional drawing corresponding to. (a) is a top view of the base plate which concerns on other embodiment of this invention, (b) is the EE sectional view taken on the line of (a). (a) is a top view of the base plate which concerns on other embodiment, (b) is the FF sectional view taken on the line of (a). (a) is a front view showing the installation state of the bearing wall constituting frame, and (b) is an enlarged front view showing a lower part of the bearing wall constituting frame shown in (a). (a) is a perspective view of a state in which the base plate is welded to the lower end of the horizontal member of the bearing wall shown in FIG. 7, (b) is a plan view of the base plate attached to the lower end of the horizontal member, and (c) is It is a partial cross section side view of (a).

  A preferred embodiment of the present invention will be described below with reference to the drawings. A base plate 1 shown in FIGS. 1 to 3 is made of a lip groove steel standing on a horizontal member 12 as shown in FIG. The vertical member 13 is fixed to the lower end of the vertical member 13 (see FIG. 8) by welding, and has a base plate part 2 having an anchor bolt insertion hole 22 through which the anchor bolt 23 protruding from the horizontal member 12 is inserted, and the vertical member 13. The rising wall portion 3 rising from the upper surface 2a of the substrate portion 2 to a predetermined height h1 along the inner peripheral surface of the lower end portion thereof, and the rising wall from the substrate portion 2 at a plurality of locations on the outer peripheral side of the rising wall portion 3 The lower end surface 13o of the vertical member 13 rises by h2 lower than the portion 3 and the lower end portion of the vertical member 12 is externally fitted to the rising wall portion 3 as indicated by a virtual line in FIG. And a welding gap S for groove welding the upper surface 2a of the substrate portion 2 is provided. It is comprised by the base parts 4 and 5 for the welding clearance setting to fix.

  The rising wall portion 3 rises from the substrate portion upper surface 2a along the inner peripheral surface of the lower end portion of the vertical member 13 and functions as a positioning guide when the lower end portion of the vertical member 13 is externally fitted. 13o and the substrate portion upper surface 2a function as a backing material when groove welding is performed at a predetermined welding gap S. The rising wall portion 3 is formed as shown in FIG. 1 and FIG. The vertical portion 13 made of lip channel steel rises from the upper surface 2a of the substrate portion so as to follow the inner surface of the lower end of each of the web portion 13a and the flange portions 13b, 13b, and the plan view is substantially U-shaped. The U-shaped portion is not continuously formed, and the portions corresponding to the corner portions of the web portion 13a and the flange portions 13b and 13b of the vertical member 13 are cut out to cross the rising wall portion 3. To the outside of the board part 2 It is an intermittent U-shape in which a groove portion 6 is formed. In other words, the rising wall portion 3 is divided into three parts, a portion corresponding to the web portion 13a of the vertical member 13, a portion corresponding to one flange portion 13b, and a portion corresponding to the other flange portion 13b. It is in a divided form. The bottom surface 6 a of the groove portion 6 is flush with the upper surface 2 a of the substrate portion 2.

  The rising height h1 of the rising wall portion 3 from the substrate portion upper surface 2a is preferably 2 to 3 times the plate thickness t of the vertical member 13 made of lip groove steel. This is because the upright wall portion 3 functions as a positioning guide when the lower end portion of the vertical member 13 is externally fitted, and the vertical member lower end surface 13o and the substrate portion upper surface 2a are groove-welded with a predetermined welding gap S. Since it functions as a backing material at the time, if the rising height h1 is less than twice the plate thickness t of the vertical member 13, for example, about 1 to 1.5 times, it will be insufficient as a positioning guide, and below the plate thickness t It will not function as a backing material, and even if the rising height h1 is 3 times or more than the plate thickness t of the vertical material 13, the function as a positioning guide and the function as a backing material will not change so much, so the material will be wasted. This is because the production cost is high.

  Further, as can be seen from FIGS. 2 to 4, the upper end surface of the rising wall portion 3 is formed such that the upper end portion 3 a of the outer surface thereof is an inwardly inclined surface. As described above, the upper end surface of the outer surface of the rising wall portion 3 is formed in an inwardly rising inclined surface, so that when the lower end portion of the vertical member 13 is externally fitted to the rising wall portion 3, the fitting is easy. Become. Further, the ridge line forming the inclined surface portion 3a is rounded and rounded without being angular.

  As shown in FIG. 2B, the welding gap setting pedestal portions 4 and 5 are formed by fitting the lower end portion of the vertical member 13 to the upright wall portion 3 so that the lower end surface 13 o of the vertical member 13 is the pedestal portion 4. , 5 to set a welding gap S for groove-welding the lower end surface 13o of the vertical member 13 and the upper surface 2a of the substrate portion 2, It is formed integrally with the substrate part 2 so as to rise from the substrate part 2 by h2 lower than the rising wall part 3 at a plurality of locations on the outer peripheral side. That is, as shown in FIGS. 2 (a) and 2 (b), welding gap setting pedestal portions 4 are provided at two locations outside the rising wall portion 3 corresponding to the web portion 13a of the vertical member 13, and Welding clearance setting pedestal portions 5 and 5 are provided at places where the lip portions 13c and 13c of the vertical member 13 are placed. The pedestal portion 5 is a lower horizontal frame member joined to the side surface of the lower end portion of the vertical member 13 when the load bearing wall constituting frame 18 as shown in FIGS. 7A and 7B is installed on the horizontal member 12. 16 is formed long enough so that welding can be performed with the end portion mounted thereon, and a slope 30 for welding groove is formed on the outer edge thereof (see FIGS. 2 (a) and 3). (See (b)).

  The height h2 (see FIGS. 2 (b) and 3 (b) in FIG. 2) of the base portions 2 and 5 for the welding gap setting pedestals 4 and 5 is the plate of the vertical member 13 made of lip channel steel. A thickness of 1 to 1.5 times the thickness t is preferred. This is because when the rising height h2 is equal to or less than the plate thickness t of the vertical member 13, the welding gap S for groove welding becomes small and welding is insufficient, and the rising height h2 is equal to the plate thickness t of the vertical member 13. This is because if the height is increased by 1.5 times or more, the welding gap S becomes large and proper groove welding cannot be performed.

  The anchor bolt insertion hole 22 of the board portion 2 is formed as a long hole as shown in FIGS. 2 (a) and 2 (b) and FIG. 3 (a) and 3 (b). The taper is formed in a downwardly expanding taper that gradually increases in diameter from the bottom to the bottom. Thus, by forming the anchor bolt insertion hole 22 to be slightly downwardly tapered, when the anchor bolt 23 is inserted and inserted, the insertion becomes easy. A plurality of anchor bolt insertion holes 22 may be provided in the substrate portion 2.

  As described above, the base plate 1 in which the anchor bolt insertion hole 22 is formed in the substrate portion 2 and the upright wall portion 3 and the welding gap setting pedestal portions 4 and 5 project from the upper surface 2a of the substrate portion 2 The whole is a casting that is integrally formed of welded structural cast steel made of carbon steel that takes weldability into account, and each ridge line part (the linear part that forms the boundary between the faces) is all larger and smaller. The cross section is rounded and rounded. If the base plate 1 is cast with cast steel for welded structure in this way, a good casting product can be obtained, and by using the casting, the base plate 1 can be mass-produced and the cost can be greatly reduced. Can do. In addition, by providing all the ridges formed on the surface of the base plate 1 with rounded cross-sections, when the base plate 1 is subjected to anti-corrosion coating or anti-rust plating, the coating film or coating is spread over the entire plate. It can be formed uniformly. That is, the coating film or coating film formed on the ridge line portion and the coating film or coating film formed on the flat portion of the plate 1 can be uniformly formed with the same film thickness, thereby effectively exhibiting the rust prevention function. .

  In addition, the base plate 1 integrally formed of the cast steel for welded structure as described above is subjected to hot dip galvanization or electrogalvanization for rust prevention on the entire plate, thus preventing the occurrence of rust and the base plate 1. It can be used effectively for many years. When the base plate 1 is subjected to rust-proof plating, each ridge line portion of the base plate 1 is formed to have a larger or smaller cross-sectional shape as described above, so that the plating film thickness is spread over the entire base plate 1. It can be made uniform, and since the ridge line portion is not an acute angle but has a rounded cross section, the film thickness at the ridge line portion does not become thin, and the same film thickness as other plane portions can be obtained. . Since plating can be performed such that the plating film thickness is uniform over the entire base plate 1, it is possible to reduce the plating film thickness of the entire base plate 1, so that after the base plate 1 is plated, When the base plate 1 is welded to the lower end of the vertical member 13, it is not necessary to remove the plating film portion of the welded portion with a grinder or the like until the film thickness is capable of being welded (for example, 8 microns). It is possible to weld from the top of the coating, so that it is not necessary to perform extra work, and the work can be speeded up. As a result, the production process can be shortened and the product cost can be reduced.

  FIGS. 4A and 4B show a state in which the base plate 1 integrally formed by casting the cast steel for welded structure as described above is fixed to the lower end portion of the vertical member 13 made of lip groove steel by welding. . In this welding, for example, the base plate 1 is fixed at a fixed position on the work floor, the vertical member 13 made of lip groove steel is brought from above, and the lower end portion thereof is substantially U-shaped in plan view from the substrate top surface 2a. The vertical wall lower end surface 13o is placed on the welding gap setting pedestal portions 4 and 5 so as to be fitted as positioning guides, and is fitted to the rising wall portion 3 rising to the vertical material. The lower end of 13 can be instantaneously positioned at the welding position with respect to the base plate 1 as shown in FIG. 2 (b) and FIG. 3 (a). At this welding position, the inner peripheral surface of the lower end portion of the vertical member 13 is supported by the rising wall portion 3 of the base plate 1, and a predetermined amount is provided between the lower end surface 13 o of the vertical member 13 and the substrate portion upper surface 2 a of the base plate 1. Welding gap S is formed.

  4 (b) and FIG. 3 (a), groove welding is performed on the welding gap S between the vertical material lower end surface 13o and the substrate portion upper surface 2a, so that FIG. b), the base plate 1 is attached to the vertical member 13 by integrally joining the lower end portion of the vertical member 13, the rising wall portion 3 of the base plate 1, the base portions 4 and 5 for setting the welding gap, and the substrate portion 2. It can be accurately fixed to the lower end. Then, by inserting an anchor bolt 23 projecting from the upper surface of the horizontal member 12 of the base into the bolt insertion hole 22 of the base plate 1 and tightening with a nut 31, a bearing wall constituting frame 18 as shown in FIG. It can stand up on the horizontal member 12.

  5A and 5B show another embodiment of the base plate 1. FIG. 5A is a plan view, and FIG. 5B is a sectional view taken along line EE of FIG. The rising wall portion 3 of the base plate 1 is cut out at portions corresponding to the corner portions of the web portion 13a and the flange portions 13b and 13b of the vertical member 13 in the same manner as shown in FIGS. Thus, the groove portion 6 is formed in an intermittent U-shape so as to cross the rising wall portion 3 so as to pass out of the substrate portion 2, but the bottom surface 6 a of the groove portion 6 is formed lower than the upper surface 2 a of the substrate portion 2. Is different.

  FIGS. 6A and 6B show still another embodiment of the base plate 1. FIG. 6A is a plan view, and FIG. 6B is a sectional view taken along line FF of FIG. The rising wall portion 3 of the base plate 1 has a base plate portion so that the rising wall portion 3 corresponding to the web portion 13 a of the vertical member 13 is cut at the center in the width direction and crosses the rising wall portion 3. 5, the groove portion 6 is formed in an intermittent U-shape, and the bottom surface 6a of the groove portion 6 is formed lower than the upper surface 2a of the substrate portion 2 as in the embodiment of FIG.

  Like the base plate 1 of the embodiment shown in FIG. 5 and FIG. 6, the rising wall portion 3 formed so as to extend intermittently along the circumferential direction of the vertical member 13 is a required portion of the rising wall portion 3. In the case where the base plate 1 is formed by forming at least one groove portion 6 that crosses out of the substrate portion 2 and is used as a vertical frame member of the load-bearing wall constituting frame 18 shown in FIG. After mounting and assembling, the plating solution or electrodeposition coating solution can be smoothly discharged from the groove 6 when the entire frame 18 is subjected to plating treatment or electrodeposition coating treatment, so that it is surrounded by the base plate 1 and the vertical member 13. The plating solution or the electrodeposition coating solution does not remain in the part, and the plating process or the electrodeposition coating process becomes easy. In this case, if the bottom surface 6a of the groove portion 6 is formed to be lower than the upper surface 2a of the substrate portion 2, the plating solution or the electrodeposition coating solution can be discharged more effectively.

DESCRIPTION OF SYMBOLS 1 Base plate 2 Board | substrate part 2a Upper surface 3 of board | substrate part Standing wall part S Welding clearance 4,5 Base part 6 for welding clearance setting Groove part 6a Bottom face 13 of groove part Vertical material (lip channel steel)
13a Vertical material web portion 13b Vertical material flange portion 13c Vertical material lip portion 13o Lower end surface of vertical material

Claims (10)

  A base plate fixed by welding to a lower end portion of a vertical member made of lip channel steel standing upright on a horizontal member so as to be along a base plate portion having an anchor bolt insertion hole and an inner peripheral surface of the lower end portion of the vertical member. The rising wall part rises to a predetermined height from the upper surface of the board part, and rises lower than the rising wall part from the board part at a plurality of locations on the outer peripheral side of the rising wall part. A base plate comprising a welding gap setting pedestal for setting a welding gap for groove-welding the lower end surface of the vertical member and the upper surface of the substrate part in a state of being fitted to the part.   The base plate according to claim 1, wherein the rising wall portion is formed so as to extend continuously or intermittently along an inner periphery of a lower end portion of a vertical member fitted on the rising wall portion.   The base plate according to claim 1, wherein the rising wall portion is formed in a substantially U shape in plan view.   The rising wall portion formed so as to intermittently extend along the inner periphery of the lower end portion of the vertical member is formed by forming at least one groove portion that crosses a required portion of the rising wall portion and goes out of the substrate portion. The base plate according to claim 1, wherein the bottom surface of the groove is formed to be flush with the upper surface of the substrate portion or lower than the upper surface of the substrate portion.   The base plate according to any one of claims 1 to 4, wherein the anchor bolt insertion hole of the base plate portion is formed in a taper that gradually increases in diameter from the upper side to the lower side.   The base plate according to any one of claims 1 to 5, wherein a rising height of the rising wall portion is 2 to 3 times a thickness of a vertical member made of lip groove steel.   The base plate according to any one of claims 1 to 6, wherein a rising height of the welding gap setting pedestal is 1 to 1.5 times a thickness of a vertical member made of lip groove steel.   The base plate according to any one of claims 1 to 7, wherein an upper end portion of an outer side surface of the rising wall portion is formed in an inwardly inclined surface shape.   The base plate according to any one of claims 1 to 8, wherein the base plate is integrally formed of cast steel for welded structure.   The base plate according to claim 1, wherein the entire base plate is hot dip galvanized or electrogalvanized.

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