JP2006207212A - Mounting structure and mounting method of structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure through an anchor and a mounting method of a structure utilizing the mounting structure allowing a base of a new structure to be mounted to an existing skeleton without lowering its yield strength, with simple structure while coping with a construction error. <P>SOLUTION: The mounting structure 1 of the structure comprises the base 10 of the new structure to be fixed to the existing skeleton 2; a washer 30 having required yield strength; and the anchor 20 installed at the existing skeleton 2 to fasten the washer 30 to thereby fix the base 10 to the existing skeleton 2. The washer 30 is fixed to the base 10 to allow transmission of shearing force by interposing a liner 13 between the upper end of the washer 30 and a rib 12 fixed to the base 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an attachment structure that is suitably used when fixing a new structure using an anchor to an existing housing, and a structure attachment method using the attachment structure.

  For example, when a new structure such as a temporary scaffolding is assembled along with the construction of a large-scale permanent structure, the new structure is permanently installed with anchors that are already installed in the frame of the permanent structure that has already been constructed. It may be fixed to the structure.

  However, these anchors are not necessarily arranged as designed because the work space for installing the anchors is small or the surveying associated with the installation may be difficult. In addition, when the main structure is a concrete frame, the anchor may be displaced due to vibration compaction or the like at the time of placing the concrete.

  Therefore, in the past, when these anchors were used, the anchor installation completed shape was surveyed, and based on this result, a bolt hole was formed in the substrate of the new structure, or just before attaching the substrate of the new structure. Construction was carried out by a method of forming or expanding bolt holes with a gas cutter or the like on site. Here, the substrate of the new structure is a member to which a part of the new structure or the new structure is fixed, and is fixed to the housing of the main structure through attachment means such as an anchor. A member that supports a structure.

  However, in the former method, high-quality construction is possible, but on the other hand, since it takes time, it was not possible to adopt it when there is a time restriction. Further, although the latter method can be applied earlier than the former method, it still has a problem in terms of time and has a problem in quality due to the work performed on site.

Therefore, in Patent Document 1, as shown in FIG. 10, there is a protrusion that can be fitted into a large-diameter through-hole formed in a new structure attached to correspond to the displacement of the insert 120 arranged in the housing. A set of two washers formed is disclosed.
This washer was formed in the same shape as the lower washer 130 having the protrusion 131 formed in the same shape as the through hole 111 of the substrate 110 of the new structure and the through hole 132 formed in the lower washer 130. A pair of washers 130, 134 in a pair is formed into an anchor bolt washer that is superposed so as to be rotatable to the left and right by an upper washer 134 having a projection 135.

The through hole 132 of the lower washer 130 is eccentric from the center and has a hole diameter larger than the diameter of the bolt 121. Further, the upper washer 134 is formed with a bolt hole 136 that is eccentric from the center and has the same diameter as the bolt 121.
If bolts 121 are inserted into the board 110 and washers 130 and 134 and fastened to the insert 120, the through hole 111 of the board 110 becomes the same as the diameter of the bolt, so the anchor (insert 120) In addition, the shearing force applied to the substrate 110 can be transmitted to the anchor (insert 120) via the side contact portions of the protrusions 131 and 135 of the washers 130 and 134.
JP-A-6-74227 (full text)

However, the washers 130 and 134 need to be formed with protrusions 131 and 135 so that the two washers 130 and 134 are respectively fitted into predetermined positions, and the through holes 132 are eccentric from the center. Or, it is necessary to form a bolt hole 136, and special processing is required in the manufacturing process, which may increase the manufacturing cost.
In addition, since the structure is a combination of a plurality of washers 130 and 134, the work at the site is complicated and may impair workability, and the transmission of shearing force may be hindered by rattling and the like. In some cases, desired quality cannot be ensured.
Further, when the scale of the new structure is large, the acting external force becomes large, and the member thickness of the substrate 110 of the new structure becomes thick, so that the protruding portion of the anchor (bolt 121) becomes long. When the protruding portion of the anchor (bolt 121) becomes long in this way, a large bending moment acts on the anchor (insert 120 and bolt 121), so that the bolt 121 may yield or the concrete of the existing frame may be subjected to bearing failure. is there.

  The present invention has been made to solve such problems, and can cope with construction errors with a simple structure, and attach a substrate of a new structure to an existing housing without reducing its proof strength. It is an object of the present invention to propose an attachment structure via an anchor that enables the above and a method of attaching a structure using the same.

  In order to solve the above-mentioned problems, the present invention provides a substrate of a new structure fixed to an existing housing, a washer having a required proof strength, and the substrate by fastening the washer installed on the existing housing. An attachment structure for a structure including an anchor fixed to the existing housing, wherein the washer is fixed to the substrate so as to enable transmission of shearing force.

  Such a mounting structure is a structure in which a base plate of a new structure is fixed to an existing casing using an anchor installed in the existing casing, and the washer is fastened via the anchor so that the existing casing and the washer Since it is a simple structure which clamps and fixes a board | substrate, it is excellent in workability | operativity, and construction with the stable quality which does not produce rattling etc. is attained. Moreover, as a washer, since well-known materials, such as a rectangular steel plate in which a bolt hole is formed, can be used, no special processing is required, and the material cost is low. The washer is formed of a member having a required proof stress and is fixed to the substrate, so that it is configured to reliably transmit a shearing force and not to be deformed. In other words, even if the anchor hole formed in the substrate corresponding to the construction error at the time of anchor installation is formed large, when a shear force greater than the shear resistance obtained from the tightening force by the anchor acts as an external force, The substrate is fixed without shifting. Here, the method of fixing the washer to the substrate may be performed by a known method. For example, both ends of the washer may be welded in parallel to the direction of the shearing force.

  The invention according to claim 2 is the mounting structure according to claim 1, wherein a rib is fixed to the substrate, and the washer has a filling material between the washer and the rib. It is characterized by being fixed to the substrate by insertion.

  Such a mounting structure is to fix the washer to the substrate by interposing a filler between the ribs fixed to the substrate, and is fixed so that shear force can be transmitted, and after use. The washer can be removed. Therefore, when the new structure is a temporary structure, each member can be diverted, which is economical and suitable for reducing the amount of waste.

  The invention according to claim 3 is the mounting structure according to claim 1 or 2, wherein the anchor has a pull-out resistance portion embedded in the existing housing, and one end portion is the pull-out portion. The other end portion is fixed to the resistance portion and protrudes from the existing housing and is inserted into the washer.

  This mounting structure is a mounting structure that is used when it is assumed that a shearing force that cannot be handled by the proof stress of the bolt that fastens the washer acts, or when it is desired to reduce the bearing stress generated in the housing. In this configuration, the shear force from the washer is directly received by the anchor itself. In other words, since the acting shear force is large, for example, when an anchor having a normal bolt and an insert is used, it is assumed that the shear resistance force of the steel bolt is insufficient, or that the bearing concrete breaks down. In such a case, by replacing a part of the anchor with a member having a large cross section such as a steel cone, the anchor can be increased in rigidity to transmit stress, and at the same time, the bearing stress generated in the concrete is reduced. As a possible configuration, the anchor and the concrete frame are prevented from being damaged. Heretofore, large diameter bolts have been used in order to increase the shear resistance, but there are problems such as excessive pulling resistance and uneconomical, and deteriorated workability. is doing. On the other hand, the mounting structure of the present structure can solve this problem.

  According to a fourth aspect of the present invention, there is provided a structure mounting method for fixing a substrate of a new structure to an existing housing using the mounting structure according to the third aspect. In a state where one end of the temporary member formed in the same shape as the portion of the shear resistance portion embedded in the existing housing is fastened, the other end surface of the temporary member coincides with the surface of the existing housing. An anchor burying step of burying the pull-out resistance portion and the temporary member in the existing housing, and after curing the existing housing, the temporary member is removed, and one end portion of the shear resistance portion is connected to the pull-out resistance portion. And an anchor installation step for fastening to the tip of the wire.

  With this structure mounting method, the shear force acting on the mounting portion between the existing housing and the new structure is handled by the anchor having a large shear resistance, thereby preventing the existing housing or the new structure from being damaged. A possible mounting structure can be easily constructed. In addition, this structure attachment method has a structure that can be applied to the displacement even if the anchor installed in the existing housing is displaced in advance, so it is excellent in workability and the construction period can be shortened. It becomes.

  With the mounting structure of the present invention, it has become possible to attach a new structure to an existing frame without reducing its proof strength, corresponding to the construction error of an anchor installed in advance with a simple structure. Bonding can be performed early and reliably.

Preferred embodiments of the present invention will be described with reference to the drawings. In the description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted.
In the present embodiment, an example in which the mounting structure according to the present invention is applied to installation of a climbing scaffold accompanying construction of a main tower of a cable-stayed bridge will be described. FIG. 1 is a diagram showing the entire climbing scaffold (A) is a front view and (b) is a plan view. 2 is an enlarged perspective view of the mounting portion of FIG. 1, in which FIG. 3 (a) is a sectional view, FIG. 2 (b) is a front view, and FIG. 4 is an exploded perspective view.

  In the first embodiment, as shown in FIGS. 1A and 1B, in the construction of the main tower of the cable-stayed bridge, the climbing scaffold (new structure) C that rises with the progress of the construction is used as the main tower. The mounting structure 1 of the present invention is adopted when installing the existing housing B to be configured. As shown in FIG. 2, the attachment structure 1 fixes the substrate 10 of the climbing scaffold C by an anchor 20 and a washer 30 that are installed in advance on the existing frame B. The washer 30 uses a member having a required proof stress. In the first embodiment, the washer 30 is made of a steel plate having a thickness equivalent to the steel material constituting the substrate 10. Further, the washer 30 is fixed to the substrate 10 by interposing a liner (filling material) 13 between the ribs 12 fixed to the substrate 10 so that shear force can be transmitted.

  As shown in FIG. 2, the substrate 10 of the climbing scaffold C is made of a so-called L-shaped steel material having a substantially L-shaped cross section, and four ribs 12 that are triangular steel plates are fixed at a predetermined interval. Further, as shown in FIGS. 3 and 4, even when the anchor 20 installed on the existing housing B is displaced due to vibration or the like at the time of concrete placement of the existing housing B, the anchor 20 is inserted into the substrate 10. An anchor hole 11 having a large hole diameter is formed between the upper and lower ribs 12 and 12. In the first embodiment, M22 is used as the bolt 21 and the hole diameter of the anchor hole 11 is 50 mm (normally, the hole diameter of the bolt hole with respect to the bolt of M22 is 24 to 25 mm). The shape of the anchor hole 11 is not limited, and may be formed to a size that can accommodate the maximum possible error of the anchor 20. Moreover, although the board | substrate 10 shall be comprised with a L-shaped steel material, the material which comprises the board | substrate 10 is not limited, if it sets suitably according to the structure of the new structure attached to the existing housing B Good.

  As shown in FIG. 3A, the anchor 20 is composed of an insert 22 disposed in advance on the existing housing B and a bolt 21 screwed into the insert 22. The insert 22 is arranged in a state of being embedded in the existing housing B. The number of anchors 20 is appropriately set according to the scale, shape, etc. of the climbing scaffold C (new structure), and is not limited. Three pieces are arranged with respect to the substrate 10 (see FIG. 2). Moreover, in 1st Embodiment, it was set as the structure which arrange | positions the insert 22 in a predetermined position previously at the time of construction of the existing frame B, but arrangement | positioning of the anchor 20 performs drilling after construction of the existing frame B, and arranges a post-construction anchor You may arrange by post-construction.

As shown in FIG. 4, the washer 30 is a steel plate in which a bolt hole 31 formed according to the bolt 21 is formed at the center, and has a required member thickness (equivalent to the substrate 10 in the first embodiment). And has the required strength. Note that the position of the bolt hole 31 is not limited to the center of the washer 30 and may be eccentric from the center. In the first embodiment, the washer 30 is formed of a substantially square steel plate. However, the shape of the washer 30 is not limited, and is formed in, for example, a circle, an ellipse, a rectangle, or other polygonal shapes. May be.
Here, in the first embodiment, it is assumed that the washer 30 has a proof strength equal to or greater than the proof strength required for the substrate 10 as “required proof strength”. The “proof strength equal to or higher than the required strength of the substrate 10” is a strength required for the substrate 10 in design, and is a member set with an allowance for the yield strength obtained by the design calculation. When a steel material having a thickness is used as the substrate 10, a steel material having a member thickness thinner than that of the substrate 10 can be used as the washer 30.

Next, the installation method of the attachment structure 1 by 1st Embodiment is demonstrated.
First, the substrate 10 is brought into contact with the existing casing B while aligning each anchor hole 11 with the position of the insert 22 embedded in the existing casing B in advance at a predetermined interval. Next, a washer 30 is disposed on the surface of the substrate 10 opposite to the surface in contact with the existing housing B while the bolt hole 31 is aligned with the position of the insert 22, and then the bolt 21 is screwed into the insert 22 to be washer. Tighten 30.
Next, the liner 13 is interposed between the upper end of the washer 30 and the rib 12 disposed above the washer 30.

With the mounting structure 1 configured by the above method, the washer 30 is applied to the substrate 10 by the frictional force generated between the bolt 21 and the substrate 10 by the tightening force of the bolt 21 and the compressive force by the bolt 21 and the liner 13 (rib 12). Fixed in a state where shearing force can be transmitted.
Therefore, the climbing scaffold C is fixed by the attachment structure 1 and can be lifted by taking a reaction force from the attachment structure 1.

  Even if the position of the anchor 20 is displaced by the mounting structure 1 according to the first embodiment, the anchor hole 11 is processed into the anchor hole 11 according to the displacement of the anchor 20 by the combination of the anchor hole 11 and the washer 30 formed to be large. Therefore, it is possible to easily fix the substrate 10 to the existing casing B without affecting the construction period.

  In addition, the washer 30 has a required proof strength (equal or higher than the proof strength required for the substrate 10) and is fixed to the substrate 10 so that shearing force can be transmitted. Can exhibit the same performance as the case where bolt holes are formed directly on the substrate 10 in accordance with the shape of the bolts 21.

  Further, since the liner 13 is only sandwiched between the washer 30 and the rib 12, the washer 30 and the liner 13 can be easily removed and reused after the climbing scaffold C is raised. Can do. Therefore, the material cost can be reduced and the cost is excellent.

  The method of fixing the washer 30 to the substrate 10 is not limited to the method performed via the liner 13. For example, when there is no plan to divert the washer 30, as shown in FIG. The direction in which the shearing force of 30 acts (in the first embodiment, the vertical direction of the washer 30) may be welded to the substrate 10 with the required size. In this case, it goes without saying that fillet welding may also be performed in a direction orthogonal to the direction in which the shearing force acts (the left-right direction of the washer 30).

Second Embodiment
6A and 6B are diagrams showing an attachment structure according to the second embodiment, wherein FIG. 6A is a cross-sectional view, and FIG. 6B is a front view. FIG. 7 is an exploded perspective view of the mounting structure according to the second embodiment. Furthermore, (a)-(d) of FIG. 8 is sectional drawing which shows the construction order of the attachment structure.

  As shown in FIG. 1, in the construction of the main tower of the cable-stayed bridge, the mounting structure 2 according to the second embodiment is about climbing scaffold C (new structure) C that rises with the progress of its construction. It has a structure that can cope with a large shearing force that acts when moving up.

  As shown in FIGS. 6A and 6B, the mounting structure 2 includes a climbing scaffold C by a washer 30 ′ including an anchor 20, a large washer 32, and a small washer 34 that are installed in advance on an existing housing B. The substrate 10 is fixed.

  The substrate 10 of the climbing scaffold C is assumed to be the same as that shown in the first embodiment, and detailed description thereof is omitted. In addition, as shown in FIGS. 6A and 6B, the anchor hole 11 of the substrate 10 according to the second embodiment is a vibration when the anchor 20 installed in the existing frame B is placed in the concrete of the existing frame B. Even if the anchor 20 is deviated, etc., it is formed with a hole diameter larger than the diameter of the cone 23 so that the anchor 20 can be inserted.

  As shown in FIG. 6A, the anchor 20 includes a pulling resistance portion 20 </ b> A, a shear resistance portion 20 </ b> B, and a bolt 21.

  The pulling resistance portion 20 </ b> A includes an anchor bolt 24, an anchor plate 25, an anchor nut 26, and a lock nut 27 that are embedded in the existing casing B in advance. The pull-out resistance portion 20A is formed by an anchor plate 25 fixed by an anchor nut 26 and a lock nut 27 at an end opposite to an end to which a cone 23 described later of the anchor bolt 24 is fixed. This resists a pulling force generated by an external force acting on the protruding portion. Here, the configuration of the pulling resistance portion 20A is not limited as long as a required pulling force can be obtained. For example, a deformed reinforcing bar or a reinforcing bar with threading may be used. .

  The shear resistance portion 20B is configured by a cone 23 having one end fixed to the anchor bolt 24 and the other end protruding from the existing casing B. The cone 23 is formed in a so-called cone shape in which the diameter of the portion embedded in the existing casing B decreases toward the anchor bolt 24 side, and the protruding portion is formed in a columnar shape. A screw hole of the bolt 21 and a screw hole of the anchor bolt 24 are formed at both ends of the cone 23, respectively. And this cone 23 is embed | buried under the existing housing B in the state which one part protruded from the existing housing B so that the surface of the big washer 32 and the end surface may correspond.

  Here, the shear resistance portion 20B is not limited to a cone-shaped member as long as the shape can resist a shearing force. Moreover, the material which comprises the cone 23 will not be limited if it has sufficient proof strength with respect to the shearing force which acts on the anchor 20, and shall use an iron cone in 2nd Embodiment. Furthermore, it goes without saying that the shape of the cone 23 is appropriately set according to the external force acting on the anchor 20.

  In addition, the bolt 21 is fastened to the end of the cone 23 on the side protruding from the existing housing B via a washer 34. The number of anchors 20 is appropriately set according to the scale, shape, etc. of the climbing scaffold C, and is not limited. In the second embodiment, the number of anchors 20 is limited to one substrate 10. Three are assumed to be arranged (see FIG. 2). Further, the diameter and the material of the cone 23 are not limited, and any structure having sufficient proof strength against the assumed shearing force may be used.

  The washer 30 ′ has an anchor hole 33 through which the cone 23 is inserted, has a required member thickness (more than the member thickness of the steel material constituting the substrate 10 in the second embodiment), and has a required strength. A large washer 32 made of a square steel plate, and a small washer 34 made of a square steel plate formed outside the large washer 32 and having a bolt hole 35 through which the bolt 21 is inserted.

The large washer 32 is fixed to the substrate 10 by interposing a liner (filling material) 13 between the ribs 12 fixed to the substrate 10 so that shear force can be transmitted. In the second embodiment, the anchor hole 33 and the bolt hole 35 are formed in the center of the large washer 32 and the small washer 34, respectively, but the formation position of the anchor hole 33 or the bolt hole 35 is eccentric from the center. It goes without saying. The shapes of the large washer 32 and the small washer 34 are not limited to a square shape, and may be formed in, for example, a circular shape, an elliptical shape, a rectangular shape, or other polygonal shapes.
Here, in the second embodiment, the large washer 32 has a proof strength equal to or greater than the proof strength required for the substrate 10 as “required proof strength”. The “proof strength equal to or higher than the required strength of the substrate 10” is a strength required for the substrate 10 in design, and is a member set with an allowance for the yield strength obtained by the design calculation. When a steel material having a thickness is used as the substrate 10, a steel material having a member thickness thinner than that of the substrate 10 can be used as the large washer 32.

Next, the installation method of the attachment structure 1 by 2nd Embodiment is demonstrated.
First, as shown in FIG. 7, the protruding portion of the cone 23 embedded in the existing casing B in advance at a predetermined interval is inserted into the anchor hole 11 to bring the substrate 10 into contact with the existing casing B. Next, after the large washer 32 is disposed on the surface of the substrate 10 opposite to the contact surface with the existing housing B so that the protruding portion of each cone 23 is inserted into the anchor hole 33, the small washer 34 is interposed. Then, the bolt 21 is fastened to the cone 23. The anchor hole 33 of the large washer 32 has the same inner diameter as the outer diameter of the protruding portion of the cone 23. By inserting the cone 23 into the anchor hole 33 and fixing it with the bolt 21 and the small washer 34, The cone 23 is fitted by a large washer 32.
Next, the large washer 32 is fixed to the substrate 10 with the liner 13 interposed between the upper end of the large washer 32 and the rib 12 disposed above the large washer 32.

  Here, in the anchor 20, the cone 23 protrudes from the existing casing B, and becomes an obstacle to the formwork K during the construction of the existing casing B. Therefore, the anchor 20 is placed on the existing casing B when the existing casing B is constructed. The other end of the temporary cone 28 is fastened with one end of a temporary cone (temporary member) 28 formed in the same shape as the portion embedded in the existing casing B of the cone 23 at the tip of the anchor bolt 24. An anchor embedding step of embedding the pulling resistance portion 20A and the temporary cone 28 in the existing housing B so that the end face coincides with the surface of the existing housing B, and after curing the existing housing B, the temporary cone 28 is removed, This is performed by an anchor installation process in which one end is fastened to the tip of the anchor bolt 24.

  That is, as shown in FIG. 8 (a), the temporary cone 28 formed in the same shape as the portion of the cone 23 embedded in the existing casing B is fixed to the anchor bolt 24 when the existing casing B is placed in the concrete. Since the tip of the temporary cone 28 forms a flat surface with the existing casing B, the mold K is disposed in contact with the temporary cone 28. Here, the temporary cone 28 serves as a so-called mold for forming a space for placing the cone 23 in the existing casing B. If the cone 28 has the same diameter as the embedded portion of the cone 23, the material and the like are as follows. It is not limited.

Next, after curing the concrete, as shown in FIG. 8 (b), the mold K is removed and the temporary cone 28 is removed from the anchor bolt 24.
Subsequently, as shown in FIG. 8C, the cone 23 is inserted into the hole of the existing housing B formed by removing the temporary cone 28 and fastened to the anchor bolt 24.
And as shown in FIG.8 (d), the board | substrate 10 is fixed to the existing housing B using the cone 23. FIG.

As described above, the mounting structure 2 according to the second embodiment has the anchor 20 embedded in the existing frame B instead of handling the own weight of the climbing scaffold or the shearing force acting when the climbing scaffold is raised by the bolt 21. Since it takes charge of (cone 23), it is possible to transmit force reasonably and to prevent the existing housing B from breaking the bearing.
That is, since the cross-sectional shape is large and the shearing force is received by the highly rigid cone 23, the bearing stress generated in the existing housing B is reduced and the load is reduced.

Further, due to the mounting structure 2 configured by the above-described method, the large washer 32 is caused by the frictional force generated between the bolts 21 and the substrate 10 by the tightening force of the bolt 21 and the compressive force by the cone 23 and the liner 13 (rib 12). The substrate 10 is fixed so that shearing force can be transmitted.
Therefore, the climbing scaffold C is fixed by the attachment structure 2 and can be lifted by taking a reaction force from the attachment structure 2.

  Further, even when the position of the anchor 20 is shifted due to the mounting structure 2, the anchor hole 11 is formed in the anchor hole 11 according to the shift of the anchor 20 by combining the larger anchor hole 11 with the large washer 32 and the small washer 34. Since there is no need for processing, the substrate 10 can be easily fixed to the existing casing B, and the construction period is not affected.

  Further, the large washer 32 has a required proof strength (equal or higher than the proof strength required for the substrate 10), and is fixed to the substrate 10 so that shearing force can be transmitted. 2 can exhibit the same performance as when bolt holes are formed in the substrate 10 in accordance with the shape of the bolts 21.

  In addition, the fixing of the washer 32 to the substrate 10 is easy because the liner 13 is sandwiched, so that it is easy to remove. After the climbing scaffold C is lifted, the washer 32 and the liner 13 are removed and moved to the next place. can do. Therefore, diverting makes it possible to reduce material costs and is economical.

  Furthermore, since the effect by the other attachment structure 2 is the same as the content shown in 1st Embodiment, detailed description is abbreviate | omitted.

The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that the above-described constituent elements can be appropriately changed in design without departing from the spirit of the present invention.
For example, in each of the above embodiments, the mounting structure of the present invention is applied to installation of a climbing scaffold. However, the purpose of using the mounting structure is not limited, and is applied to mounting between all structures. Is possible.

Further, in each of the above embodiments, the mounting structure of the present invention is adopted for mounting the climbing scaffolding which is a temporary structure. However, the mounting structure can be used without being limited to the permanent structure and the temporary structure. is there.
In each of the above embodiments, the present invention is applied when a new steel structure is attached to an existing concrete structure. For example, it is used when a new steel structure is attached to an existing steel structure. The structure of the structure is not limited.

In each of the above embodiments, the ribs 12 are fixed horizontally to the substrate 10. However, as shown in FIG. 9A, a plurality of ribs are fixed vertically so that the liner 13 can be interposed. Alternatively, the configuration of the rib 12 is not limited.
Further, the position of the bolt hole 21 (or anchor hole) formed in the washer 30 is not limited to the center of the washer 30 and may be eccentric from the center as shown in FIG. 9B, for example. Needless to say, the shape of the bolt hole 31 may be, for example, a long hole as shown in FIG.

Further, in the first embodiment, when it is assumed that a large shearing force that may cause a bearing bearing failure of the concrete is applied to the existing frame, it does not protrude from the existing frame instead of the insert. It is good also as a structure which prevents a bearing failure by arrange | positioning the cone which consists of the material similar to the cone used in 2nd Embodiment comprised in this. In this case, it goes without saying that the size of the cone is formed according to the shearing force.
Further, in each of the above embodiments, the washer is fastened by screwing the bolt into the insert or the cone. For example, the anchor bolt that has been threaded is disposed so that the tip of the anchor bolt protrudes from the housing. In the case of using the anchor, the type of the anchor and the washer are configured such that after the anchor bolt is inserted and the substrate and the washer are arranged, the nut is screwed into the anchor bolt to fasten the washer. The fixing method is not limited.

It is a figure which shows the whole climbing scaffold installed in the existing frame by the attachment structure which concerns on this invention, Comprising: (a) is a front view, (b) is a top view. It is the perspective view which expanded and showed the attachment structure concerning a 1st embodiment. It is a figure which shows the attachment structure which concerns on 1st Embodiment, Comprising: (a) is sectional drawing, (b) is a front view. It is a disassembled perspective view which shows the attachment structure which concerns on 1st Embodiment. It is a modification which shows the attachment structure which concerns on 1st Embodiment, Comprising: (a) is sectional drawing, (b) is a front view. It is a figure which shows the attachment structure which concerns on 2nd Embodiment, Comprising: (a) is sectional drawing, (b) has shown the front view. It is a disassembled perspective view of the attachment structure of 2nd Embodiment. (A)-(d) is sectional drawing which shows the construction order of the attachment structure which concerns on 2nd Embodiment. (A)-(c) is a front view which shows a part of modification of the attachment structure of this invention. It is sectional drawing which shows the conventional attachment structure.

Explanation of symbols

1, 2 Mounting structure 10 Substrate 11 Anchor hole 12 Rib 13 Liner (filling material)
20 Anchor 20A Pulling resistance part 20B Shear resistance part 21 Bolt 23 Cone 24 Anchor bolt 25 Anchor plate 30 Washer 31 Bolt hole 32 Large washer 34 Small washer A Fillet weld B Existing frame C Climbing scaffold

Claims (4)

A substrate of a new structure fixed to the existing housing;
A washer having the required yield strength;
An anchor that is installed in an existing housing and fastens the washer to fix the substrate to the existing housing;
An attachment structure for a structure including
The mounting structure, wherein the washer is fixed to the substrate so that shear force can be transmitted.   2. The mounting according to claim 1, wherein a rib is fixed to the substrate, and the washer is fixed to the substrate by inserting a filling material between the washer and the rib. Construction. The anchor is a pulling resistance portion embedded in the existing housing;
The one end portion is fixed to the pull-out resistance portion, and the other end portion is constituted by a shear resistance portion that protrudes from the existing housing and is inserted into the washer. Or the attachment structure of Claim 2. A mounting method for a structure using the mounting structure according to claim 3 to fix a substrate of a new structure to an existing housing,
With one end of a temporary member formed in the same shape as a portion of the shear resistance portion embedded in the existing casing at the tip of the pulling resistance portion, the other end surface of the temporary member is fixed to the existing resistance portion. An anchor embedding step of embedding the pulling resistance portion and the temporary member in the existing housing so as to coincide with the surface of the housing;
An anchor installation step of removing the temporary member after curing of the existing housing and fastening one end of the shearing resistance portion to a tip of the pulling resistance portion. .

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