JP2015101911A - Grout material injection frame for column base member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grout material injection frame for a column base member which can prevent the come-off of the frame at the injection work of a grout material, hardly causes float-up, and can prevent the leakage of the grout material to the utmost.SOLUTION: In a grout material injection frame 1 for a column base member, groove parts of a plurality of pieces of band-shaped members 11 to 14 in which the groove parts notched to a short side direction are formed at both end parts are engaged with each other so as to surround an external periphery of a column base member 3 of a foundation 2, a grout material is injected from the inside of the plurality of pieces of the band-shaped members 11 to 14 by using a grout material injection implement, and the grout material is filled into a space which is formed between an upper face of the foundation 2 and a lower face of the column base member 3. At least one piece or more of Z-shaped band-shaped members which are formed in directions in which the groove parts of both end parts are contrary with respect to each other in short side directions are included at the plurality of pieces of the band-shaped members 11 to 14, at least one piece of the band-shaped member has a protrusion which protrudes toward the outside from the column base member 3, and the own weight of the grout material injection implement is supported to an upper end face of the protrusion via a grout material injection implement abutting member 15.

Description

  The present invention includes a plurality of strip members, and is installed so as to surround the outer periphery of the column base member provided on the foundation by mutually engaging the groove portions of adjacent strip members, and grout material from the inside of the strip members A grout material injection mold for column base members (hereinafter simply referred to as a "form frame") is used to fill the space formed between the upper surface of the foundation and the lower surface of the column base member by injecting the grout material with an injection tool. ”In some cases.).

  When joining column members on the upper surface of the foundation in the column base of a building structure, attach a column base member to which the lower end of the column member is connected to an anchor bolt that is fixed inside the foundation and protrudes from the upper surface of the foundation. Join. Here, the column base member is a base plate that is fixed in advance to the lower end of the steel column when the column material is a steel frame (steel structure), and when the column material is wood (a wooden building), the wooden column is It is a column base metal object connected to a column connecting member such as a tenon or a plate fixed to the plate.

  As a method of constructing these column base members, in the case of a steel structure building, usually a base plate with a steel column fixed to a level mortar provided on the upper surface of the foundation is placed with an anchor bolt inserted through the through hole, and the steel frame is placed. After adjusting the erection of the pillar, tighten the nut and fix it. The entire outer periphery of the base plate is surrounded by a formwork such as a pier or a dam plate, and the gap between the lower end of the formwork and the upper surface of the foundation is sufficiently cured, and is formed between the upper surface of the base and the lower surface of the base plate. Fill the space with grout material and the construction is complete.

  On the other hand, in the case of wooden buildings such as detached houses, the top surface of the foundation is almost flat, so mount the column base hardware as it is, or mount the column base hardware after laying a thin mortar material. In general, the nut is tightened and fixed after level adjustment. Recently, however, the number of medium- and large-scale structures called large-span structures and wooden frame structures has been increasing in wooden buildings. Since it is necessary to transmit the large force acting on the base directly from the column base metal or via the anchor bolt to the foundation, the grout material is filled and integrated between the foundation and the column base metal as described above. It is required to plan.

  Here, as a conventional grout material injection mold for column base members, for example, a plurality of strip plate-shaped mold materials in which fitting grooves are formed in both ends are proposed (for example, Patent Document 1). reference.). Since this mold has a configuration in which adjacent mold materials are crossed to fit the fitting grooves, it can be easily installed so as to surround the entire outer periphery of the column base member.

Utility Model Registration No. 3029343

  However, in the conventional mold described in the above-mentioned Patent Document 1, all the fitting grooves on both sides of the strip-shaped mold material are notched in the same direction from one to the other. In this case, there is a problem that each formwork material is easily detached upward due to an impact or the like.

  In particular, in the foundation of a wooden building, the base is fixed in advance on the upper surface to the vicinity of the outer periphery of the column base member, so there is almost no work space between the end surface of the base and the column base member, and each formwork material Curing of the lower end of the base and the upper surface of the foundation cannot be performed. Therefore, as the grout material is gradually filled in the space on the lower surface of the column base member, the mold material also floats along with it, and there is a possibility that a gap is formed between the upper surface of the foundation and the grout material is likely to leak out. There is also a problem.

  The present invention has been made in view of such problems, and it is difficult to lift even when the grout material is injected by an impact or when the grout material is filled in the space below the column base member. An object of the present invention is to provide a grout material injection mold for a column base member that can prevent leakage of the column as much as possible.

  In order to solve the above problems, a grout material injection mold for a column base member according to the present invention includes a plurality of strip-shaped members each having groove portions cut out in the short-side direction, and adjacent strip-shaped members. The groove portions of the members are engaged with each other and installed so as to surround the outer periphery of the column base member provided on the foundation, and the grout material is injected from the inside of the belt-shaped member by the grout material injection tool, and the upper surface of the foundation and the column base member A grout material injection mold for a column base member used to fill a space formed between the bottom surface and a grout material, and a plurality of strip-shaped members each have groove portions at both ends in a short direction. One or more Z-shaped belt-like members formed in opposite directions are included, and at least one belt-like member has a protrusion protruding outward from the column base member. Supports the weight of the grout injection tool at the top surface And wherein the Rukoto.

In the grout material injection mold for column base members according to the present invention, the plurality of strip-shaped members include one or more Z-shaped strip-shaped members in which the groove portions at both ends are formed in opposite directions in the lateral direction. In addition, at least one strip-shaped member has a protruding portion protruding outward from the column base member, and the upper end surface of the protruding portion supports the weight of the grout injection tool.
Therefore, even if an impact is applied during the grout material injection operation, each band member does not come off, and even if the grout material is filled in the space on the bottom of the column base member, it is difficult to lift the formwork. Therefore, the grout material can be prevented from leaking out as much as possible, so that the grout material injection workability is improved.

It is a top view which shows the usage example of the grout material injection | pouring mold for column base members concerning this invention. It is a front view which shows the usage example of the grout material injection mold for column base members which concerns on this invention. (A)-(c) It is the front view, right view, and top view which show an example of the 1st strip | belt-shaped member which respectively comprises the grout material injection mold for column base members concerning this invention. (A), (b) It is the front view and top view which show an example of the 2nd strip | belt-shaped member which respectively comprises the grout material injection mold for column base members concerning this invention. (A), (b) It is the front view and top view which show an example of the 3rd strip | belt-shaped member which comprises the grout material injection mold for column base members which concerns on this invention, respectively. (A), (b) It is the front view and top view which show an example of the 4th strip | belt-shaped member which respectively comprises the grout material injection mold for column base members concerning this invention. (A)-(d) It is the front view, top view, right view, and rear view which show an example of the grout material injection tool contact member which comprises the grout material injection mold for column base members which concerns on this invention, respectively. (A)-(c) It is a top view which shows the other example and arrangement example of the 1st strip | belt-shaped member which respectively comprise the grout material injection | pouring mold for column base members concerning this invention. (A), (b) It is a perspective view which shows the other example of the grout material injection tool contact member which comprises the grout material injection mold for column base members which concerns on this invention, respectively. It is a top view which shows an example of the installation place of the grout material injection | pouring mold for column base members which concerns on this invention.

  Next, the case where it uses for the column base member provided on the foundation of the wooden building is demonstrated about embodiment of the grout material injection mold 1 for column base members which concerns on this invention.

  As shown in FIGS. 1 to 7, for example, the mold 1 has four first belt-like members 11 to 4 made of steel each having a groove cut in a short direction at both ends. It consists of a member 14 and a grout material injector contact member 15, and is installed and used so as to surround the outer periphery of the column base member 3 provided on the foundation 2 as shown in FIGS. In addition, the material of the 1st strip | belt-shaped member 11-the 4th strip | belt-shaped member 14 and the grout material injection | pouring tool contact member 15 is not limited to steel, If it is a material which has the intensity | strength of the level which dams a grout material, Of course, it may be made of resin or wood. 1 and 2, 5 is an anchor bolt and nut for fixing the column base member 3 to the foundation 2, and 6 is a gap for providing a gap between the bottom surface of the column base member 3 and the top surface of the foundation 2. Level mortar.

  As shown in FIGS. 3A to 3C and the like, the first belt-like member 11 is a plan view L composed of a long plate portion 11a and a short plate portion 11b bent almost 90 degrees from one end of the long plate portion 11a. The short plate portion 11b protrudes outward from the column base member 3 and supports the weight of the grout injection tool at the upper end surface 11b1 of the short plate portion 11b.

  As shown in FIG. 3A, the first strip member 11 has a groove portion 11a1 that is open downward in the short direction at the distal end portion of the long plate portion 11a. As shown to b), the groove part 11b2 open upwards in the transversal direction is formed in the front-end | tip part of the short board part 11b. Therefore, the first belt-like member 11 is a Z-shaped belt-like member because the groove portions 11a1 and 11b2 at both ends are formed in opposite directions in the short direction. The depth (length) h1 of the groove 11a1 and the groove 11b2 is approximately ½ of the length H in the short direction of the first belt-like member 11. In addition, the depth (length) of the groove part formed in the both ends of the 2nd strip | belt-shaped member 12-the 4th strip | belt-shaped member 14 mentioned later is also substantially the height H of the 2nd strip | belt-shaped member 12-4th strip | belt-shaped member 14. 1/2.

  The second belt-like member 12 is provided at a position facing the first belt-like member 11 as shown in FIG. 1, and as shown in FIGS. 4 (a) and 4 (b), grooves 12a and 12b open upward at both ends thereof. Is formed. Therefore, since the groove portions 12a and 12b at both ends are not formed in opposite directions in the short direction, the second belt member 12 is not a Z-shaped belt member but an E-shaped belt member.

  As shown in FIG. 1, the third belt-like member 13 is stretched over the first belt-like member 11 and the second belt-like member 12, and as shown in FIGS. An upwardly open groove 13a that engages with the downwardly open groove 11a1 is formed, while a downwardly open groove 13b that engages with the upwardly open groove 12b is formed on the second belt-like member 12 side. Accordingly, the third belt-like member 13 is a Z-shaped belt-like member because the groove portions 13a and 13b at both ends are formed in opposite directions in the short direction.

  The fourth belt-like member 14 is provided at a position facing the third belt-like member 13 as shown in FIG. 1, and as shown in FIGS. 6 (a) and 6 (b), a grout material injection tool which will be described later is provided on one end side. An upper open groove 14a that engages with a lower open groove 15a1 (see FIGS. 7A and 7D) of the front side surface 15a of the contact member 15 is formed, and a second belt-like shape is formed on the other end side. A downwardly open groove 14b that engages with the upwardly open groove 12a of the member 12 is formed. Accordingly, the fourth band-shaped member 14 is a Z-shaped band-shaped member because the grooves 14a and 14b at both ends are formed in opposite directions in the short direction.

  In addition, between the groove part 14a of this 4th strip | belt-shaped member 14, and the groove part 14b, the groove part 15c1 of the downward opening of the rear side surface 15c of the grout material injection tool contact member 15 (refer Fig.7 (a), (d)). ) To be engaged with each other) is formed.

  As shown in FIGS. 7A to 7D, the grout material injector contact member 15 is formed in a substantially U shape in a side view having a front side surface 15a, an upper side surface 15b, and a rear side surface 15c. In the center of the upper side surface 15b, a grout material injection hole 15b1 is provided. The grout material injection hole 15b1 is formed to have a size such that, for example, when the tip of a funnel-shaped grout material injection tool is inserted, the outer peripheral surface portion of the tip contacts the peripheral edge of the grout material injection hole 15b1.

  Here, the height h2 of the front side surface 15a is longer than the height H of the first belt-like member 11 to the fourth belt-like member 14 by substantially the thickness of the upper side surface 15b, and the grout material is removed from the front side surface 15a. It is configured not to leak. The length h3 of the rear side surface 15c in the vertical direction is such that the grout material flows from the grout material injector contact member 15 between the bottom surface of the column base member 3 and the top surface of the foundation 2. The fourth belt-like member 14 is shorter than the height H.

  Further, the front side surface 15a of the grout injection member abutting member 15 has a first belt-like member when assembled to the first belt-like member 11 and the fourth belt-like member 14 on both sides thereof as shown in FIGS. 11 which engages with the upper open groove 11b2 (see FIG. 3B) of the eleven short plate 11b and the upper open groove 14a of the fourth strip 14 (see FIG. 6A). Open grooves 15a1 and 15a2 are provided.

  The four first belt-like members 11 to the fourth belt-like member 14 and the grout material injecting member abutting member 15 configured as described above are provided on the column base member 3 provided on the foundation 2 as shown in FIG. The mold 1 of the present embodiment is assembled by engaging the respective groove portions so as to surround the outer periphery.

  The tip of the grout material injection tool is inserted into the grout material injection hole 15b1 of the grout material injection tool contact member 15, and the outer peripheral surface portion of the grout material injection tool is in contact with the peripheral edge of the grout material injection hole 15b1. Is poured into the grout material injection tool to fill the space formed between the upper surface of the foundation 2 and the lower surface of the column base member 3 with the grout material.

  Then, since the grout material injection tool abutting member 15 is pressed downward by the weight of the grout material injection tool to which the weight of the grout material is also added, the grout material injection tool contact member 15 is engaged from the lower side. The first strip member 11 and the fourth strip member 14 are also pressed downward. Therefore, even if the grout material is filled in the space on the lower surface of the column base member 3, the first strip member 11 and the fourth strip member 14 are difficult to lift.

  Further, the groove portion 11a1 of the first belt-like member 11 that engages with the third belt-like member 13 is a groove portion that opens downward as shown in FIG. Since it engages from the upper side, the downward pressing force which acts on the 1st strip | belt-shaped member 11 is transmitted also to the 3rd strip | belt-shaped member 13, and it becomes difficult to lift.

  Moreover, the groove part 14b of the 4th strip | belt-shaped member 14 engaged with the 2nd strip | belt-shaped member 12 is a groove part of the downward opening as shown in FIG. Since it engages from the upper side, the downward pressing force which acts on a 4th strip | belt-shaped member is transmitted also to the 2nd strip | belt-shaped member 12, and it becomes difficult to lift.

  Therefore, the first belt-like member 11 to the fourth belt-like member 14 and the grout material injector contact member 15 constituting the mold 1 of the present embodiment installed so as to surround the outer periphery of the column base member 3 are all grout materials. Since the downward pressure acts by the dead weight of the injection tool, it becomes difficult to lift, and leakage of the grout material is prevented as much as possible.

  FIG. 10 is a plan view showing an example of the installation location of the grout material injection mold 1 for the column base member according to the present invention. The mold 1 has the position of the corner column 2a of the foundation 2, the position of the side column 2b, and the like. These can be installed on the column base members 3 provided at all positions.

  Therefore, according to the mold 1 of the present embodiment, the first belt-like member having the first belt-like member 11, the third belt-like member 13, and the fourth belt-like member 14 as one or more Z-shaped groove belt-like members. In order to install the member 11 to the fourth strip member 14 and the grout material injector contact member 15 so as to surround the outer periphery of the column base member 3 provided on the foundation 2 by engaging each other, grout material injection work Even when an impact or the like is applied at this time, the first belt member 11 to the fourth belt member 14 and the grout material injector contact member 15 constituting the mold 1 are not moved upward.

  In particular, the contact member 15 for the grout material injection tool has a grout material injection hole 15b1 on the upper side surface 15b, and grooves 15a1 and 15a2 are formed on the front side surface 15a. Since the weight of the grout material injection tool to which the weight of the grout material is added is transmitted to all of the first belt member 11 to the fourth belt member 14 via the contact member 15 for the grout material injection tool, As the grout material is filled in the space on the lower surface of the leg member 3, the formwork does not float up, and it is possible to avoid the grout material from leaking out as much as possible. In this respect as well, the grout material injection workability can be improved. it can.

  In the above description of the embodiment, the case where the grout material injection mold 1 for a column base member is used as the column base member 3 provided on the foundation 2 in the wooden building is exemplified. Not limited to this, it can also be used for column base members of steel structure buildings.

  Further, in the description of the above embodiment, the mold 1 is constituted by the plurality of first belt-like members 11 to 4 and the grout material injecting member abutting member 15. In addition to the first belt-like member 11, the belt-like member 16 having a shape as shown in FIG. 8A can be used, or the belt-like member 17 can be used as shown in FIG. 8B. Furthermore, as shown in FIG. 8C, at least one strip-shaped member is configured to form a projecting portion projecting outward from the column base member 3 by using the strip-shaped members 18 to 20 that are not bent. Anyway. In addition, when using the strip | belt-shaped members 16, 17, and 18-20 shown to Fig.8 (a)-(c), the 2nd strip | belt-shaped member 12-the 4th strip-shaped member 14, the strip-shaped member 16, the strip-shaped member 17 or Since the strip-shaped members 18 to 20 surround the outer periphery of the column base member 3, as shown in FIG. 9A, the grout material injection tool contact member 15 in which the grout material injection hole 15b1 ′ is composed only of the upper side surface 15b ′. 'Can be placed on the protruding portion, or the grout injection member abutting member 15 can be omitted.

  In the description of the above embodiment, the grout injection member abutting member 15 has a front side surface 15a, an upper side surface 15b, and a rear side surface 15c as shown in FIGS. 7 (a) to 7 (d). Although it has been described with a grout material injecting member abutting member 15 ′ consisting only of the upper side surface 15b ′ as shown in FIG. 9 (a), the present invention is not limited to this, and FIG. 9 (b) As shown in the figure, it is of course possible to use an L-shaped grout material injection tool abutting member 15 ″ having a front side surface 15a and an upper side surface 15b in which the rear side surface 15c is omitted.

  Further, in the description of the above embodiment, the first belt-like member 11, the third belt-like member 13 and the fourth belt-like member 14 constituting the mold 1 are formed in directions in which the groove portions at both ends are opposite to each other in the short direction. However, the present invention is not limited to this, and any one of the first belt member 11 to the fourth belt member 14 constituting the mold 1 is a Z-shaped belt member. The point is that at least one Z-shaped belt-shaped member is included, and the grout material injecting tool or the grout material injecting tool abutting member when the grout material is injected by being installed on the foundation 2 In the belt-shaped member to which 15 does not abut, it is only necessary that both the groove portions on the both sides are not a combination of downwardly opened groove portions. For example, all of the first belt-like member 11 to the fourth belt-like member 14 may be constituted by Z-shaped belt-like members, and the second belt-like member 12 to the fourth belt-like member 14 are constituted by Z-shaped belt-like members. And only the 1st strip | belt-shaped member 11 can also be comprised with the E-shaped strip | belt-shaped member in which the groove part of the both ends was formed in the same direction in the transversal direction, respectively. In this case, the first belt-like member 11 is in contact with the grout injection member abutting member 15, so that the grooves on both sides thereof may be either downwardly opened grooves or upwardly open grooves. . Furthermore, the shape of the groove part formed in the both ends of each strip | belt-shaped member 11-14 is not restricted to what was demonstrated in the said embodiment, A part width | variety of a groove part is formed narrowly, or a projection part is provided in an inner surface. You may do it. If it makes such a shape, it will become further difficult for the strip | belt-shaped member which mutually engaged the groove parts to come off.

  In the description of the above embodiment, the mold 1 has been described as being installed along the outer peripheral edge of the column base member 3 as shown in FIGS. 1, 2, 10, etc. Not limited to this, if the formwork 1 has a height equal to or higher than the position of the lower surface of the column base member 3, it can be installed at a position away from the outer peripheral edge of the column base member 3.

DESCRIPTION OF SYMBOLS 1 Grout material injection mold for column base members 11 1st strip | belt-shaped member 12 2nd strip | belt-shaped member 13 3rd strip | belt-shaped member 14 4th strip | belt-shaped member 15,15 ', 15 "Grout material injection tool contact member 2 Foundation 2a Corner column 2b Side column 3 Column base member 4 Base 5 Anchor bolt and nut 6 Level mortar

Claims (1)

A plurality of strip-shaped members each having groove portions cut in the short direction formed at both ends thereof are engaged with each other to surround the outer periphery of the column base member provided on the foundation. The column base member is used to fill the space formed between the base upper surface and the column base member bottom by injecting the grout material from the inside of the belt-shaped member with the grout material injection tool. Grout material injection formwork for
The plurality of strip-shaped members include one or more Z-shaped strip-shaped members in which the groove portions at both ends are formed in opposite directions in the short direction, and at least one strip-shaped member is a column base member. A grout injection mold for a column base member, characterized in that it has a protrusion protruding outward from the top and supports the weight of the grout injection tool at the upper end surface of the protrusion.

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