JP2004339742A - Cross rail reinforcing timber and protection fence - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide cross rail reinforcing timber and a protection fence capable of having necessary and sufficient strength characteristics, facilitating the replacement in the case of rot and damage in timber, having the excellence in beauty and simply carrying out work at a low cost. <P>SOLUTION: Timber body 2 of the cross rail reinforcing timber 1 includes insertion trench 4 formed along the longitudinal direction over both ends in the side, a mounting trench 5 largely forming a cross section in the perimeter from the insertion trench 4 at both ends of the insertion trench 4, a bolt hole 6 passing through by crossing the insertion trench 4 and the mounting trench 5 and seat cuts formed in both ends of the bolt hole 6. A reinforcing plate 3 has a length within the length of the timber body 2, and a plurality of through-holes corresponding to each bolt hole 6 are included to fit the whole body inside of the insertion trench 4. The head section of a bolt 7 is stored in the seat cut to penetrate a shaft section in the bolt hole 6 of the timber body 2 and a through-hole of the reinforcing plate 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing timber for a horizontal rail using a thinned wood or other wood and a protective fence, which are installed for safety on a sidewalk along a roadway.
[0002]
[Prior art]
Conventionally, protective fences using timber are made of timber for both the pillar and the side pier, and are mainly used in places that emphasize landscapes such as forest parks.
As a conventional protective fence, there is one in which an improvement is made to the method of attaching the column and the crosspiece (see Patent Document 1).
[0003]
On the other hand, construction methods that combine wood and foreign materials are also being developed, and there are cases where a fence skeleton formed by combining reinforcing cores is covered with wood, the appearance is shown as wood, and wood is used for makeup. Yes (see Patent Document 2).
[0004]
Furthermore, in order to reinforce the timber itself, there is also one in which a reinforcing material is fixed to a groove formed in the timber (see Patent Document 3).
[0005]
In addition, as a protective fence using wood, there is one in which wood is fixed to a joint fixed to a column with bolts (see Patent Documents 4 and 5).
[0006]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-280305 [Patent Document 2]
JP 2000-8656 A [Patent Document 3]
Japanese Utility Model Publication No. 55-48925 [Patent Document 4]
JP-A-2002-356821 [Patent Document 5]
Japanese Patent Laid-Open No. 2002-167936
[Problems to be solved by the invention]
However, in the protective fence shown in Patent Document 1, only wood is used, so even if chemicals are injected, the decay of the wood progresses quickly especially at the base of the column, and it is a regular safety measure for sidewalk users. It was necessary to repeat the coating of chemicals on the ground and to check the entire protective fence.
[0008]
In addition, the guard fence shown in Patent Document 1 is narrower than the steel pipe guard fence already used on the sidewalks of national roads, etc., because of the insufficient strength of the timber for the side rails, and concrete is required for the pillars. However, there was a problem that the construction labor and costs increased, and conversely, if the cross section of the wood was increased to increase the strength, the cost of the preservatives increased.
[0009]
Even in the construction method combining wood and dissimilar materials to improve them, for example, the invention described in Patent Document 2 requires the installation and basic processing of a square steel pipe that forms the skeleton of the fence, or the welding work, and is also embedded in cosmetic wood. Since the wood is fixed with an adhesive, it is difficult to replace only the wood when the wood is damaged, and there is a problem that the product price and the construction cost increase.
[0010]
Furthermore, in the reinforcing wood described in Patent Document 3, there is a problem that the reinforcing material is exposed on the surface and the appearance is impaired.
In the protective fences described in Patent Documents 4 and 5, compared to steel pipe protective fences, the strength of the timber for the side rails is weak, so that there is a problem that the interval between the columns is narrow and the labor and cost increase. was there.
[0011]
The present invention has been made by paying attention to such conventional problems, and even if wood is used for a horizontal beam with a column interval of a steel pipe protective fence that is already widely used throughout the country, the necessary and sufficient strength is obtained. The purpose of the present invention is to provide reinforced timber and protective fences for horizontal rails that have characteristics, facilitate the replacement of wood when it is decayed and damaged, have excellent aesthetics, and can be constructed easily and inexpensively.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the reinforcing timber for a cross rail according to the present invention of claim 1 is composed of a timber main body and a reinforcing plate, and the timber main body is inserted in the side surface along the longitudinal direction at both ends. A groove and a plurality of bolt holes formed so as to penetrate the side surface across the insertion groove, and the reinforcing plate has a plurality of through holes corresponding to the bolt holes in the insertion groove. It is characterized by being fitted.
[0013]
In the reinforcing wood for horizontal rails according to the first aspect of the present invention, since the reinforcing plate is integrated by being fitted into the insertion groove, the strength of the reinforcing plate, particularly the bending strength characteristics in the direction along the reinforcing plate. Has been increased. In the reinforcing wood for horizontal rails, the reinforcing plate is securely fixed to the wood body by inserting the shaft portion of the bolt into the bolt hole and screwing the nut into the shaft portion. When inserting the shaft portion of the bolt, if the fixing portion is penetrated at the same time, the reinforcing wood for the horizontal rail can be fixed to the fixing portion. When temporarily attaching one end of the reinforcing plate with a bolt when attaching the wood main body to the support with a bolt, the other end side of the reinforcing plate is rotated with the bolt as a fulcrum, and the height of the other end of the reinforcing plate is freely adjusted Can be attached. If the wood body is damaged, the wood body can be easily replaced by removing the bolts and nuts.
[0014]
The reinforcing wood for horizontal rails according to the present invention of claim 2 includes a wood body, a reinforcing plate, a bolt, and a nut, and the wood body includes insertion grooves formed along the longitudinal direction at both ends on the side surface, A mounting groove having a larger cross section around the insertion groove at both ends of the insertion groove, a bolt hole formed so as to penetrate the side surface across the insertion groove and the mounting groove, and the bolt A countersink having a cross section larger than the bolt hole at both ends of the hole, and the reinforcing plate has a length within the length of the wood body, and a plurality of holes corresponding to each bolt hole The bolt has a through hole and is entirely fitted in the insertion groove, the bolt has a head portion accommodated in the countersink, and a shaft portion passes through the bolt hole of the wood body and the through hole of the reinforcing plate. The nut is screwed into the shaft of the bolt and the seat Things, characterized contained in Ri.
[0015]
In the reinforcing wood for horizontal rails according to the second aspect of the present invention, since the reinforcing plate is integrated by being inserted into the insertion groove, the rigidity of the reinforcing plate, particularly the bending strength characteristics in the direction along the reinforcing plate Has been increased. In the reinforcing wood for horizontal rails, the reinforcing plate is securely fixed to the wood body by inserting the shaft portion of the bolt into the bolt hole and screwing the nut into the shaft portion. Since the entire reinforcing plate is fitted inside the insertion groove, it does not stand out from the outside and does not get in the way. Moreover, since the head part and nut of a volt | bolt are accommodated in the counter digging, they are not conspicuous and do not get in the way.
[0016]
The reinforcing wood for horizontal rails according to the present invention of claim 2 is formed by inserting two joint plates projecting from the column into the mounting groove, sandwiching the ends of the reinforcing plates between the joint plates, and using bolts and nuts. By fixing, the crosspiece reinforcing wood can be fixed to the column. Thereby, the reinforcing wood for horizontal rails can be fixed to the support column without making the mounting portion conspicuous. Also, when fixing the reinforcing timber for the horizontal rail to each joint plate of the support with bolts, temporarily fix one end of the wood body with the bolt, rotate the other end side of the wood body with the temporarily fixed bolt as a fulcrum, The height of the other end of the wood body and the angle with respect to the column can be freely adjusted and fixed to each joint plate of the column. For this reason, the reinforcing timber for the horizontal rail can be easily fixed to the support on the slope. If the wood body is damaged, the wood body can be easily replaced by removing the bolts and nuts.
[0017]
In the reinforcing wood for horizontal rails according to the second aspect of the present invention, since the reinforcing plate can be directly fixed to the joint plate of the support column, there is no need for a dedicated joint member that is indispensable for a conventional steel pipe protective fence. It is necessary and can be easily detached by simply inserting or pulling the bolt into the bolt hole of the wood body, the through hole of the reinforcing plate, and the horizontal beam mounting hole of the joint plate.
[0018]
The reinforcing wood for horizontal rails according to the present invention of claim 3 comprises a wood main body, a reinforcing plate, a bolt and a nut, and the wood main body has insertion grooves formed along the longitudinal direction at both ends on a side surface, A bolt hole formed so as to pass through the side surface across the insertion groove, and a countersink having a cross section formed larger at the both ends of the bolt hole around the bolt hole, and the reinforcing plate is A plurality of through holes corresponding to each bolt hole and mounting through holes formed in the protruding portions at both ends, which are longer than the length of the wood main body, protrude from both ends of the wood main body and fit into the insertion grooves. The bolt has a head portion accommodated in the pocket digging, a shaft portion passing through the bolt hole of the wood body and the through hole of the reinforcing plate, and the nut is screwed with the shaft portion of the bolt. And is accommodated in the counter digging
[0019]
In the reinforcing wood for horizontal rails according to the present invention of claim 3, since the reinforcing plate is integrated by being fitted into the insertion groove, the strength of the reinforcing plate, particularly the bending strength characteristics with respect to the direction along the reinforcing plate Has been increased. In the reinforcing wood for horizontal rails, the reinforcing plate is securely fixed to the wood body by inserting the shaft portion of the bolt into the bolt hole and screwing the nut into the shaft portion. Since the reinforcing plate is fitted inside the insertion groove except for the protruding portions at both ends, it does not stand out from the outside and does not get in the way. Moreover, since the head part and nut of a volt | bolt are accommodated in the counter digging, they are not conspicuous and do not get in the way.
[0020]
By inserting bolts into the mounting through holes at both ends of the reinforcing plate and the mounting holes at the side portions of the column and fixing the bolts, the reinforcing wood for the horizontal rail can be fixed to the column. In addition, when fixing the reinforcing timber for the horizontal rail to the column with the bolt, one end of the reinforcing plate is temporarily fixed with the bolt, and the other end of the reinforcing plate is rotated with the temporarily fixed bolt as a fulcrum. The height of the end and the angle with respect to the column can be freely adjusted and fixed to the column. For this reason, the reinforcing timber for the horizontal rail can be easily fixed to the support on the slope. If the wood body is damaged, the wood body can be easily replaced by removing the bolts and nuts.
[0021]
The reinforcing wood for horizontal rails according to the present invention of claim 3 can directly fix the reinforcing plate to the support column, so that a dedicated joint member which is indispensable for the conventional steel pipe protective fence becomes unnecessary. The bolts can be easily detached by simply inserting or pulling the bolts into the bolt holes of the wood body, the through holes of the reinforcing plate, and the mounting holes of the columns.
[0022]
The guard fence according to the present invention of claim 4 is composed of a plurality of support posts and the reinforcing timber for the cross rail according to claim 2, each support post having two joint plates projecting to the side, and each joint The plates are parallel to each other, and have horizontal beam mounting holes that are disposed inside the mounting grooves with the end portions of the reinforcing plates interposed therebetween, and pass through positions corresponding to the through holes in the end portions of the reinforcing plates, Reinforcing wood for the horizontal rail is bridged between the columns, and the shaft portion of the bolt penetrates the horizontal rail mounting hole together with the bolt hole of the wood body and the through hole of the reinforcing plate, and is screwed into the nut. It is characterized by being fixed to each column.
[0023]
The protective fence according to the present invention of claim 5 comprises a plurality of support posts and the reinforcing timber for the cross beam according to claim 3, and each support post has a cross beam attachment hole penetrating a side portion thereof, The reinforcing timber is bridged between the columns, and the shaft portion of the bolt passes through the mounting through holes and the horizontal beam mounting holes of the reinforcing plate and is screwed to the nuts to be fixed to the columns. This is a feature.
[0024]
In the reinforcing wood for horizontal rails according to the present invention and the protective fence according to the present invention, the reinforcing wood for horizontal rails is preferably arranged with the insertion groove facing downward.
In the present invention, it is preferable that the support column has a circular cross section and is erected in the vertical direction on the ground. In general, a support column is used in which each joint plate extends in the longitudinal direction and in the vertical direction with respect to the support column and protrudes at a distance in the lateral direction. The wood body is preferably subjected to antiseptic treatment. The insertion groove preferably has a width that is substantially the same as or slightly larger than the thickness of the reinforcing plate, and a depth that is equal to or greater than the width of the reinforcing plate. If the insertion groove is slightly larger than the thickness of the reinforcing plate, insert the reinforcing plate into the insertion groove, insert the bolt into the bolt hole and through hole, and tighten the nut to narrow the insertion groove and tightly attach the reinforcing plate to the insertion groove It is preferable to make it. Thus, the strength can be increased by integrating the wood body and the reinforcing plate. In the present specification, “wood” means a wooden rod-like member such as a log or a square, regardless of the material and the cross-sectional shape. In addition to a long and narrow steel plate, the reinforcing plate may be a rigid resin plate or a ceramic plate having a predetermined strength.
[0025]
In the present invention, it is preferable that the wood body has a cut formed for the purpose of preventing dry cracking. The incision is preferably about 5 mm in thickness from the surface of the wood to the center of the cross section of the wood, and is formed in a groove shape over the entire length in the longitudinal direction of the wood. This incision is called back split and is usually processed at sawmills nationwide. In order to save the labor of processing the wood main body, it is preferable to use a cut for preventing dry cracking as it is in the insertion groove.
[0026]
In the protective fence according to the present invention, it is preferable to use a steel pipe column as the column. In this case, the problem that the ground part of the wooden column is corrupted by the protective fence using wood is solved, and the construction of a machine that is already widely used can be applied to the building of the column.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, various embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment of the present invention.
As shown in FIGS. 1 to 3, the reinforcing timber 1 for a horizontal rail is composed of a wood body 2, a reinforcing plate 3, bolts 7, and nuts 8. As shown in FIG. 4, the wood main body 2 has an insertion groove 4, a mounting groove 5, a bolt hole 6, and a countersink 9. The wood main body 2 has a cylindrical shape. The insertion groove 4 is formed in the side surface 2a of the wood main body 2 along the longitudinal direction over both ends 2b. The insertion groove 4 is formed in the center line direction from the side surface 2 a of the wood body 2. The insertion groove 4 extends in the vertical direction on the lower surface and in the longitudinal direction of the wood body 2 when the wood body 2 is horizontally disposed. The insertion groove 4 has a depth equal to or smaller than the cross-sectional radius of the wood body 2 and is narrow. The mounting groove 5 has a larger cross section around the insertion groove 4 at both ends of the insertion groove 4. The mounting groove 5 is larger in depth and width than the insertion groove 4. The bolt hole 6 is composed of a plurality, and is formed so as to penetrate the side surface 2 a across the insertion groove 4 and the mounting groove 5. The counterbore 9 has a larger cross section around the bolt holes 6 at both ends of each bolt hole 6. The wood body 2 is a wood-based resource including thinned wood.
[0028]
The reinforcing plate 3 is made of flat steel having the same length and the same length as the wood body 2, and has a plurality of through holes 3 a corresponding to the respective bolt holes 6, and is entirely fitted in the insertion groove 4. Yes. The reinforcing plate 3 has the same thickness as the width of the insertion groove 4.
[0029]
As shown in FIG. 4, the head 7 a of the bolt 7 is accommodated in the digging 9, and the shaft portion 7 b passes through the bolt hole 6 of the wood main body 2 and the through hole 3 a of the reinforcing plate 3. The nut 8 is screwed into the shaft portion 7b of the bolt 7 and is accommodated in a countersink 9 opposite to the head portion 7a. When the reinforcing plate 3 is inserted into the insertion groove 4 of the wood body 2 and fixed with the bolts 7 and the nuts 8, the reinforcing wood 1 for the horizontal rail is formed. The reinforcing plate 3 having the same extension as the wood body 2 is completely integrated with the wood body 2 by bolts 7 and nuts 8.
[0030]
Since the reinforcing plate 3 is integrated by fitting the reinforcing plate 3 in the insertion groove 4, the strength of the reinforcing wood 3 for the horizontal rail is enhanced by the rigidity of the reinforcing plate 3, in particular, the bending strength characteristic in the direction along the reinforcing plate 3. ing. Accordingly, when the horizontal rail reinforcing wood 1 is disposed with the insertion groove 4 facing downward, the strength in the vertical direction is increased. In the reinforcing wood 1 for the horizontal rail, the reinforcing plate 3 is securely fixed to the wood main body 2 by inserting the shaft portion 7b of the bolt 7 into the bolt hole 6 and screwing the nut 8 into the shaft portion 7b. Since the entire reinforcing plate 3 is fitted inside the insertion groove 4, it does not stand out from the outside and does not get in the way. Moreover, since the head 7a and the nut 8 of the bolt 7 are accommodated in the counter digging 9, they are not conspicuous and do not get in the way.
[0031]
When the shaft portion 7b of the bolt 7 is inserted, the reinforcing wood 1 for the horizontal rail can be fixed to the fixing portion by passing through the fixing portion at the same time. When the wood main body 2 is attached to a column or the like with the bolt 7, if one end of the wood main body 2 is temporarily fixed with the bolt 7, the other end of the wood main body 2 is rotated with the bolt 7 as a fulcrum. The height of the can be adjusted freely. When the wood body 2 is damaged, the wood body 2 can be easily replaced by removing the bolts 7 and the nuts 8.
[0032]
5 to 8 show a second embodiment of the present invention.
As shown in FIGS. 5 to 7, the horizontal rail reinforcing wood 10 includes a wood body 2, a reinforcing plate 11, bolts 7, and nuts 8. As shown in FIG. 8, the wood main body 2 has an insertion groove 4, a bolt hole 6, and a countersink 9. The insertion groove 4 is formed in the side surface 2a of the wood main body 2 along the longitudinal direction over both ends 2b. The insertion groove 4 is formed in the center line direction from the side surface 2 a of the wood body 2. The insertion groove 4 extends in the vertical direction on the lower surface and in the longitudinal direction of the wood body 2 when the wood body 2 is horizontally disposed. The insertion groove 4 has a depth equal to or smaller than the cross-sectional radius of the wood body 2 and is narrow.
[0033]
The reinforcing plate 11 is made of flat steel that is longer in the longitudinal direction than the length of the wood body 2, and has a plurality of through holes 11 a corresponding to the respective bolt holes 6, and is entirely fitted in the insertion groove 4. Yes. The reinforcing plate 11 has the same thickness as the width of the insertion groove 4. The reinforcing plate 11 protrudes from both ends of the wood body 2 and is fitted in the insertion groove 4. The reinforcing plate 11 has mounting through holes 11c in the protruding portions 11b at both ends. Since the bolt 7 and the nut 8 have the same configuration as that of the first embodiment of the present invention described above, a duplicate description is omitted.
[0034]
When the reinforcing plate 11 is inserted into the insertion groove 4 of the wood body 2 and fixed with the bolt 7 and the nut 8, the reinforcing wood 10 is configured. As shown in FIG. 8, the reinforcing plate 11 longer in the longitudinal direction than the wood body 2 is completely integrated with the wood body 2 by bolts 7 and nuts 8.
[0035]
Since the reinforcing plate 11 is integrated by fitting the reinforcing plate 11 into the insertion groove 4, the horizontal rail reinforcing wood 10 is improved in strength, in particular, bending strength characteristics in the direction along the reinforcing plate 11 due to the rigidity of the reinforcing plate 11. ing. In the reinforcing wood 10 for the horizontal rail, the reinforcing plate 11 is securely fixed to the wood body 2 by inserting the shaft portion 7b of the bolt 7 into the bolt hole 6 and screwing the nut 8 into the shaft portion 7b. Since the reinforcing plate 11 is fitted inside the insertion groove 4 except for the protruding portions 11b at both ends, it does not stand out from the outside and does not get in the way. Moreover, since the head 7a and the nut 8 of the bolt 7 are accommodated in the counter digging 9, they are not conspicuous and do not get in the way.
[0036]
By inserting the bolts 7 into the mounting through holes 11c at both ends of the reinforcing plate 11 and the mounting holes at the side portions of the column and fixing the bolts, it is possible to fix the reinforcing wood 10 for the horizontal rail to the column. Further, when the horizontal rail reinforcing wood 10 is fixed to the support column with the bolt 7, one end of the reinforcing plate 11 is temporarily fixed with the bolt 7, and the other end side of the reinforcing plate 11 is rotated with the temporarily fixed bolt 7 as a fulcrum. The height of the other end of the reinforcing plate 11 and the angle with respect to the support can be freely adjusted and fixed to the support. For this reason, the reinforcing wood 10 for horizontal rails can be easily fixed also to the support | pillar of an inclined ground. When the wood body 2 is damaged, the wood body 2 can be easily replaced by removing the bolts 7 and the nuts 8.
[0037]
The purpose of reinforcement by inserting and fixing the reinforcing plate 3 extending in the same direction as the wood body 2 and the reinforcing plate 11 longer in the longitudinal direction than the wood body 2 into the insertion groove 4 is necessary when only the wood body 2 is used as a cross rail. This is to prevent the destruction of the wood body 2 with respect to the load, and mainly to amplify the strength against the load in the vertical direction. Therefore, it is not necessary to perform excessive reinforcement as in the case of conventional reinforced wood.
[0038]
The groove width of the insertion groove 4, the thickness of the reinforcing plate 3 of the horizontal rail reinforcing wood 1 of the first embodiment, and the thickness of the reinforcing plate 11 of the horizontal rail reinforcing wood 10 of the second embodiment are as follows. Based on the strut spacing and the required load, it is calculated by the allowable stress method from the wood body 2 and the flat steel material. The value is 5 mm at the maximum when the wood body 2 is formed in a cylindrical shape having a diameter of 8 cm. At this time, the depth of the insertion groove 4 is 42 mm as an example. The required load conforms to the P-type design strength of pedestrian bicycle fences in the “protection fence installation standards” established by the Ministry of Land, Infrastructure, Transport and Tourism.
[0039]
9 to 11 show a third embodiment of the present invention.
As shown in FIG. 9, a protective fence 12 using reinforcing wood is constructed from the columnar pillar 13 and the reinforcing wood 1 for horizontal rails according to the first embodiment shown in FIG.
[0040]
In FIG. 9, the columnar column 13 has two horizontal rail joint plates 14 protruding in the horizontal direction on the side portion. The column support 13 is made of a general structural carbon steel pipe, and two joint plates 14 having a space are attached to the column support. Each joint plate 14 is parallel to each other, and is disposed inside the mounting groove 5 with the end portion of the reinforcing plate 3 interposed therebetween. Each joint plate 14 has a horizontal rail mounting hole 14 a that penetrates at a position corresponding to the through hole 3 a at the end of the reinforcing plate 3.
[0041]
The reinforcing timber 1 for the horizontal rail is bridged between the pillars 13, and the shaft portion 7 b of the bolt 7 penetrates each horizontal rail mounting hole 14 a together with the bolt hole 6 of the wooden body 2 and the through hole 3 a of the reinforcing plate 3. The nut 8 is screwed to be fixed to each column 13. FIG. 10 shows a state in which the reinforcing wood 1 is attached to the columnar column 13 having the horizontal rail joint plate 14 projecting in the horizontal direction from the upper surface. The reinforcing wood 1 covers the joint plate 14 for the horizontal beam of the cylindrical column 13 from above, and the two joint plates 14 are inserted into the mounting groove 5 to extend the same as the wood body 2 incorporated in the reinforcing wood 1. By inserting the reinforcing plate 3 into the space between the two joint plates 14, sandwiching the end portions of the reinforcing plate 3 between the joint plates 14, inserting bolts 7 into those bolt holes, and fixing them with the nuts 8. Then, the installation of the reinforcing timber 1 for the horizontal rail is completed. Thereby, the reinforcement wood 1 for horizontal rails can be fixed to the support | pillar 13 without making the attachment part conspicuous.
[0042]
Since the reinforcing plate 3 for the horizontal rail can directly fix the reinforcing plate 3 to the joint plate 14 of the support column 13, a dedicated joint member, which has been indispensable for a conventional steel pipe protective fence, is not required. 7 can be easily attached / detached simply by inserting or withdrawing 7 into the bolt hole 6 of the wood body 2, the through hole 3 a of the reinforcing plate 3, and the horizontal rail mounting hole 14 a of the joint plate 14.
[0043]
FIG. 11 shows an embodiment in the case where the ground on which the protective fence is installed has a slope. Even if the installation height of the column post 13 having the horizontal rail joint plate 14 protruding in the horizontal direction changes, the reinforcing wood 1 can be freely angled with the bolts 7 as fulcrums from the mounting grooves 5 provided at both ends. Can be adjusted. When a steep slope is expected, it is desirable to drop the corners of both ends of the wood body 2 in advance as in the reinforcing wood 1 shown in FIG.
[0044]
12 to 14 show a fourth embodiment of the present invention.
As shown in FIG. 12, a protective fence 15 using reinforcing wood is constructed from the columnar column 16 and the reinforcing wood 10 of the second embodiment shown in FIG.
[0045]
In FIG. 12, each columnar column 16 is made of a general structural carbon steel pipe and has a horizontal beam mounting hole 16 a penetrating the side portion. The crosspiece reinforcing wood 10 is bridged between the pillars 16, and the shaft portion 7 b of the bolt 7 passes through the attachment through holes 11 c and the crosspiece attachment holes 16 a of the reinforcing plate 11 and is screwed into the nut 8. And fixed to each column 16.
[0046]
FIG. 13 shows a state in which the reinforcing wood 10 is attached to the columnar column 16 from the upper surface. Reinforcement wood 10 is combined with the side of the column strut 16, and bolts 7 are attached to the through holes for attachment of the reinforcement plate 11 longer in the longitudinal direction than the bolt holes 6 of the column strut 16 and the wood body 2 protruding at both ends of the reinforcement wood 10. Installation is completed by inserting and fixing with the nut 8. The reinforcing wood 10 shown in FIG. 13 is an application example in the case where there is a curve on the sidewalk. At the both ends of the wood main body 2, the back of the sidewalk side is cut off and the reinforcing plates 11 protruding from both ends of the reinforcing wood 10 are used. When the projecting portion 11b is bent and curved on the cylindrical column 16 side, the overlapping is prevented.
[0047]
FIG. 14 shows an embodiment in the case where there is a slope on the ground on which the protective fence is installed. Even when the installation height of the column support 16 changes, the angle of the reinforcing wood 10 can be freely adjusted with the bolt 7 as a fulcrum.
[0048]
Further, when the bolt 7 is inserted, a counterbore 9 is formed in the wood body 2 so that the bolt does not protrude from the reinforced wood 1 and the reinforced wood 10 from the viewpoint of safety.
[0049]
FIGS. 15 and 16 show the protection fence 12 using the reinforcing wood of the third embodiment, wherein the support span is 3 m at the same interval as the protection fence made of steel pipe already installed along the sidewalk of the national road. As a result of repeated application of the vertical and horizontal loads specified for the design strength of Class P of Pedestrian Bicycle Fence in the “Protection Fence Installation Criteria” defined by the Ministry of Land, Infrastructure, Transport and Tourism, This shows the relationship of the amount of deflection. According to the regulations, when the load is applied, the column and the crosspiece are not distorted. The vertical load is the load on which a normal weight adult sits, and the horizontal load is the standard weight. Is defined as the load when an adult is leaning.
[0050]
The vertical load and horizontal load specified by the P-type design strength of pedestrian bicycle fences in the “Protection Fence Installation Criteria” are 590N and 390N, respectively. There are many cases where the horizontal rail of a steel pipe protective fence is deformed downward. If a similar case occurs in the wood body 2, the safety factor is 1.5 and the load amount is 885 N and 585 N, respectively, because it is not deformed and may break due to the nature of the wood body 2, resulting in an accident. As a strength test. Here, SI unit system 590N is 60 kg in the old MKS unit system, and SI unit system 390N is 40 kg in the old MKS unit system.
[0051]
Using a full-scale strength tester, the required load was repeatedly applied three times by the central concentrated load method, and as a result of comparison with a steel pipe protective fence, no residual strain was confirmed. Further, in comparison with the case where only the wood main body 2 is attached to the support column, the protective fence 12 using the reinforced wood has been confirmed to have a reinforcing effect of the reinforcing plate in the vertical direction. In addition, the wood body 2 uses a cylindrical processed wood body 2 having a diameter of 8 cm, and the horizontal rail of the steel pipe protective fence used as a comparison object has a diameter of 42.7 mm, which is already commonly used on sidewalks on national roads, and has a thickness. This is a general structural carbon steel pipe of 2.3 mm.
[0052]
From these results, it can be determined that the protective fence 12 using reinforced wood has a performance that satisfies the specified strength characteristics. Further, since the structure of the protective fence 15 using the reinforced wood is the same as that of the protective fence 12 using the reinforced wood, the same judgment can be made.
[0053]
In this way, the protective fence 12 using reinforced wood has the same strut span as the steel pipe protective fence currently found on sidewalks along the national road, etc., and the strength in the actual use state where the reinforced wood is attached. The destructive test satisfies the P class design strength of pedestrian bicycle fences as defined by the Ministry of Land, Infrastructure, Transport and Tourism's “protection fence installation standards”.
[0054]
The protection fences 12 and 15 of the third and fourth embodiments are the problems of the protection fence using the conventional wood main body 2, the rot of the strut base and the lack of strength of the horizontal timber main body 2, Also, the conventional construction method using the wood body 2 and the construction work that was a common problem with the wood body 2 and the protection fence that combines foreign materials was improved. It becomes a protection fence by.
[0055]
According to the reinforcing woods 1 and 10 and the protective fences 12 and 15 of the first to fourth embodiments, the appearance is the same as the original wood body 2 just by exposing several bolts 7, and is regarded as important now. It is environmentally friendly, and has the effect of providing an excellent landscape, especially in places where people can see it.
[0056]
According to the reinforcing woods 1 and 10 and the protective fences 12 and 15 of the first to fourth embodiments, since the wood body 2 is used only for the horizontal rails, the struts and the spacing between the struts, and the construction method of the struts are , It is the same method as steel pipe protective fences already used for sidewalks along national roads. By replacing the steel pipe cross rail with the reinforced wood 1 and 10, the steel fences made of steel pipe can be replaced with the protective fences 12 and 15 using the reinforced wood 1 and 10 without reducing the strength characteristics. It becomes possible to convert. Alternatively, the protection fences 12 and 15 using 1 and 10 can be switched to a conventional steel pipe protection fence.
[0057]
And by using thinning material for the timber body 2, the effect of promoting thinning, which is a problem common to mountain villages throughout the country, is produced.
[0058]
【The invention's effect】
According to the present invention, even when wood is used for horizontal rails with the spacing of steel pipe guard fences widely used throughout the country, it has necessary and sufficient strength characteristics, and it is easy to replace wood when it decays and is damaged. In addition, it is possible to provide a reinforcing timber for a horizontal rail and a protective fence which are excellent in aesthetics and can be constructed easily and inexpensively.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a reinforcing wood for horizontal rails according to a first embodiment of the present invention.
FIG. 2 is an exploded front view of the reinforcing material for horizontal rails shown in FIG.
FIG. 3 is an exploded end view of the end portion of the crosspiece reinforcing wood shown in FIG. 1;
FIG. 4 is an end view showing a state in which the wood body and the reinforcing plate are integrated in FIG. 1;
FIG. 5 is a perspective view showing a reinforcing wood for horizontal rails according to a second embodiment of the present invention.
6 is an exploded front view of the reinforcing rail for horizontal rail shown in FIG. 5. FIG.
FIG. 7 is an exploded end view of the reinforcing material for horizontal rails shown in FIG.
FIG. 8 is an end view showing a state in which the wood body and the reinforcing plate are integrated in FIG. 5;
FIG. 9 is a front view showing a guard fence using reinforcing wood according to a third embodiment of the present invention.
10 is a plan view of a principal part showing a state in which a guard fence using the reinforcing wood shown in FIG. 9 is attached to a column. FIG.
FIG. 11 is a front view of a principal part showing an embodiment of the protective fence on an inclined ground using the reinforcing wood shown in FIG. 9;
FIG. 12 is a front view showing a guard fence using reinforcing wood according to a fourth embodiment of the present invention.
13 is a plan view of a principal part showing a state in which a guard fence using the reinforcing wood shown in FIG. 12 is attached to a column. FIG.
14 is a main part front view showing an embodiment of the protective fence on an inclined ground using the reinforcing wood shown in FIG. 12; FIG.
FIG. 15 is a graph showing a relationship between a vertical load and a deflection amount between a protective fence using the reinforced wood of the third embodiment and a conventional steel pipe protective fence.
FIG. 16 is a graph showing a relationship between a horizontal load and a deflection amount between a protective fence using the reinforced wood of the third embodiment and a conventional steel pipe protective fence.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reinforcement wood for horizontal beam 2 Wood main body 3 Reinforcement plate 4 Insertion groove 5 Installation groove 6 Bolt hole 7 Bolt 8 Nut 9 Counter digging 10 Reinforcement wood for horizontal beam 11 Reinforcement plate 12 Guard fence 13 using reinforcement wood Joint plate 15 Guard fence 16 made of reinforced wood

Claims (5)

It consists of a wood body and a reinforcing plate,
The wood main body has an insertion groove formed along the longitudinal direction over both ends on a side surface, and a plurality of bolt holes formed so as to penetrate the side surface across the insertion groove,
The reinforcing plate has a plurality of through holes corresponding to the bolt holes and is fitted in the insertion groove.
Reinforced timber for horizontal rails. It consists of a wood body, a reinforcing plate, bolts and nuts,
The wood main body includes insertion grooves formed along the longitudinal direction on both sides of the wood main body, mounting grooves each having a large transverse section around the insertion groove at both ends of the insertion groove, the insertion groove, and the A bolt hole formed so as to penetrate the side surface across the mounting groove, and a countersink having a cross section formed larger at the both ends of the bolt hole around the bolt hole,
The reinforcing plate has a length within the length of the wood body, has a plurality of through holes corresponding to each bolt hole, and is entirely fitted inside the insertion groove,
The bolt has a head portion accommodated in the pocket digging, and a shaft portion passes through the bolt hole of the wood body and the through hole of the reinforcing plate,
The nut is screwed into the shaft of the bolt and accommodated in the countersink;
Reinforced timber for horizontal rails. It consists of a wood body, a reinforcing plate, bolts and nuts,
The wood body includes an insertion groove formed on a side surface along the longitudinal direction at both ends, a bolt hole formed so as to penetrate the side surface across the insertion groove, and the bolt hole at both ends of the bolt hole. And having a counterbore with a larger cross section around it,
The reinforcing plate is longer than the length of the wood body, protrudes from both ends of the wood body, is fitted into the insertion groove, and is formed in a plurality of through holes corresponding to each bolt hole and projecting portions at both ends. Through holes for,
The bolt has a head portion accommodated in the pocket digging, and a shaft portion passes through the bolt hole of the wood body and the through hole of the reinforcing plate,
The nut is screwed into the shaft of the bolt and accommodated in the countersink;
Reinforced timber for horizontal rails. It consists of a plurality of struts and the reinforcing timber for a horizontal rail according to claim 2,
Each column has two joint plates projecting to the side, and each joint plate is parallel to each other, and is disposed with the end of the reinforcing plate inside the mounting groove, and the end of the reinforcing plate There is a horizontal rail mounting hole that penetrates at a position corresponding to the through hole of
The reinforcing wood for the horizontal rail is bridged between the columns, and the shaft portion of the bolt penetrates the horizontal rail mounting hole together with the bolt hole of the wood body and the through hole of the reinforcing plate, and is screwed with the nut. That it is fixed to each column,
Features a protective fence. It consists of a plurality of struts and a reinforcing timber for a horizontal rail according to claim 3,
Each strut has a horizontal rail mounting hole that penetrates the side,
The reinforcing timber for the horizontal beam is bridged between the columns, and the shaft portion of the bolt passes through each mounting through hole and each horizontal beam mounting hole of the reinforcing plate and is screwed to the nut to be fixed to each column. That has been
Features a protective fence.

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