Fence structure and materials

Abstract

To provide a fence structure which gives a heavy feeling and has high resistance to wind pressure, in which a fence can be constructed with reduced labor and time even when a road width and a site are narrow.SOLUTION: In a fence structure in which a plurality of fence panel units is fixed to a base part in a state of being skewed by an elastic shaft, the plurality of fence panel units being provided with a panel core material having a cylinder part joined to a honeycomb structure in which cells with hexagonal cross sections are connected, and a covering plate material which covers the face where at least the side on which the cell is open in the panel core material, the panel core material and the covering plate material are made of a resin or aluminum, the elastic shaft is elastically deformed in a deflection direction, and the fence panel units stacked vertically are not fixed together, thereby bending the fence with elastic deformation of the elastic shaft when the fence receives wind pressure.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a fence structure and a fence material that constitutes the fence structure. [Background technology]

[0002] Concrete block walls and wet concrete walls, which are cast on-site, have traditionally been used as fences between neighboring houses or between houses and roads to prevent others from entering or exiting and to block views. In recent years, dry concrete walls, in which precast concrete panels are manufactured in a factory and transported to the site for construction, have also been used.

[0003] However, concrete block walls require a lot of time and effort on site, since rebars are laid out lengthwise and widthwise, and the blocks are stacked while being filled with mortar. Wet concrete walls also require a lot of time and effort on site, since rebars are laid out lengthwise and widthwise, formwork is set up to sandwich the rebars, concrete is poured into the formwork, and the formwork is removed after the concrete has hardened and dried. Dry concrete walls, on the other hand, can eliminate the time required for hardening and drying the concrete on site, and shorten the construction period, but they have the problem of needing large transport vehicles and cranes to transport the heavy precast concrete panels and construct them on site, as well as the need for a large number of workers.

[0004] Additionally, there was the problem that wet concrete walls, which require large formwork, or dry concrete walls using large precast concrete panels could not be constructed in places where large transport vehicles or cranes could not enter, such as areas where the surrounding roads are narrow or where there is little available land area.

[0005] Furthermore, in the case of concrete block walls and concrete walls, various standards such as the spacing of rebars, the height and thickness of the wall, and the depth of the foundation are set by law to maintain a certain level of strength to prevent collapse, but many old walls that do not meet the current standards remain throughout the country. In recent years, due to the series of severe damage caused by large earthquakes, there is a demand to dismantle and remove old walls that do not meet the current standards and replace them with new ones, but the reality is that the reconstruction of walls has not progressed due to the problems mentioned above in the construction of new walls. If new walls could be constructed with reduced labor and time, even when the road width or lot width is narrow, it is believed that the reconstruction of walls would also be promoted.

[0006] On the other hand, metal or wooden fences (mesh, railings, board enclosures) can be constructed without much effort or time, even when the road or lot is narrow, but they are not popular with customers who want a more solid look in their fences.

[0007] Therefore, the applicant has previously proposed and implemented a fence structure that can be constructed with reduced labor and time even when the road width or site is narrow and that gives a sense of solidity, and a fence material for constructing the same (see Patent Document 1). This fence material comprises a fence panel unit in which the opening of an aluminum frame is covered on both sides with covering plate materials and which has through holes that penetrate a pair of horizontal members that make up the frame, and a long rod-shaped member that is inserted into the through holes. A number of fence panel units are stacked vertically so that the central axes of the respective through holes are on the same leading line, and the lower ends of the long rod-shaped members inserted into the through holes are buried in the foundation, thereby constructing the fence structure.

[0008] The wall material of Patent Document 1 is lightweight with a hollow structure, and can be manufactured in advance in a factory and transported by a small number of workers, so that even if the construction site is small, it is no problem and wall structures can be constructed with reduced labor and time. In addition, since the wall material's hollow structure cannot be seen from the outside, a wall structure with a heavy feel can be constructed. Furthermore, heavy walls such as concrete block walls and concrete walls have the advantage that if they collapse in an earthquake, the damage caused by being crushed is severe, and since it is difficult to remove them manually, there is a risk that roads will be blocked and the movement of people and emergency vehicles will be hindered, whereas lightweight walls have the advantage that such risks are less likely.

[0009] However, lightweight fences tend to have low resistance to wind pressure. If slits or other gaps are formed in the fence through which the wind can pass, the resistance to wind pressure will increase, but the fence will not have a solid feel. Therefore, the applicant wanted to create a fence that is lightweight, yet has a solid feel and is highly resistant to wind pressure. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent Publication 2018-135703 Summary of the Invention [Problem to be solved by the invention]

[0011] As described above, the present invention aims to provide a lightweight fence that can be constructed with reduced labor and time even when the road width or site is narrow, a fence structure that gives a sense of solidity and is highly resistant to wind pressure, and the fence material that constitutes the fence structure. [Means for solving the problem]

[0012] In order to solve the above problems, the fence structure according to the present invention comprises: "A panel core material in which a cylindrical portion is joined to a honeycomb structure in which cells having a hexagonal cross section are arranged in series, and a covering plate material that covers at least the surface of the panel core material in which the cells are open, The cylindrical portions are stacked on the base in the height direction so that the central axes of the cylindrical portions are aligned on the same line. An elastic shaft having a male screw formed at least at an upper end thereof is inserted into the cylindrical portion of each of the plurality of fence panel units, The lower end of the elastic shaft is embedded in the foundation, and a female screw member is screwed into the male screw at the upper end of the elastic shaft, thereby fixing the multiple fence panel units to the foundation, The panel core material and the covering plate material are each made of resin or aluminum, The elastic shaft is elastically deformed in the bending direction, and the fence panel units stacked in the height direction are not fixed to each other, When a wall made up of wall panel units stacked vertically is subjected to wind pressure, the wall bends in accordance with the elastic deformation of the elastic shaft in the bending direction.

[0013] The wall structure of this configuration has multiple wall panel units fixed to the foundation in a state where they are, in a sense, "pierced" by elastic shafts embedded in the foundation.

[0014] The fence structure of this configuration is constructed using fence panel units as structural units, and the fence panel units can be manufactured in advance at a factory. Furthermore, since there is no need to fasten multiple fence panel units stacked in the height direction to each other, the fence structure can be constructed with significantly less labor and time than conventional concrete block fences or wet concrete fences.

[0015] The wall panel unit is extremely lightweight because the panel core and covering plate materials, which are its constituent parts, are made of resin or aluminum, and the panel core is made of a honeycomb structure with many voids and a hollow cylindrical section. Therefore, depending on the size, workers can transport it manually. Therefore, wall structures can be constructed without problems even at construction sites where the road width and site area are narrow and large transport vehicles and cranes cannot enter.

[0016] Furthermore, when viewed from the side covered with the covering plate material, neither the honeycomb structure with many voids nor the hollow tubular structure are visible, and since it is thicker than a net or railing fence, it is possible to construct a wall that gives a sense of solidity.

[0017] In addition, an elastic shaft that elastically deforms in the bending direction is used to secure the wall panel units stacked in the height direction to the foundation, the wall panel units are not fixed to each other when stacked in the height direction, and each wall panel unit is lightweight. Therefore, when the wall is subjected to wind pressure, the elastic shaft is allowed to bend, and the wall bends in conjunction with the bending of the elastic shaft.

[0018] In other words, unlike conventional concrete block walls or concrete walls, which withstand wind pressure due to the weight and rigidity of the wall itself, we can provide a wall structure based on a new concept in which the wall itself can withstand wind pressure by flexing.

[0019] In addition to the above configuration, the fence structure according to the present invention has the following features: It can be said that "the wall bends elastically until the ratio (D / H) of the horizontal displacement D of the top end of the wall to the height H of the wall reaches 4.5% to 5.6%."

[0020] As will be described in detail later, it is possible to provide a fence structure in which the fence bends elastically within the above range. A fence that has bent elastically will return to its original state when the load, such as wind pressure, is removed.

[0021] In addition to the above configuration, the fence structure according to the present invention has the following features: It can be said that "the wall will bend without falling over until the ratio (D / H) of the horizontal displacement D of the top end of the wall to the height H of the wall reaches 14.6% to 18.5%."

[0022] If the wall exceeds the range of elastic deflection, residual displacement will occur when the load on the wall is removed. However, the applicant considered that it is important that in an emergency such as when the wall is subjected to large wind pressure, even if the wall does not return to its original state completely while remaining deflected, it can withstand the large wind pressure without falling over. With the wall structure of this configuration, the wall will not fall over even if it is deflected significantly. This is because, as described above, an elastic shaft that elastically deforms in the deflection direction is used to fix the wall panel units stacked in the height direction to the foundation, the wall panel units stacked in the height direction are not fixed to each other, and each wall panel unit is lightweight.

[0023] Next, the "fence material" according to the present invention is "A panel core material in which a cylindrical portion is joined to a honeycomb structure in which cells having a hexagonal cross section are arranged in series, and a covering plate material covering at least the surface of the panel core material where the cells are open, the panel core material and the covering plate material being made of resin or aluminum, and a plurality of fence panel units, an elastic shaft that is longer than the total height of the plurality of fence panel units, has a thickness that allows it to be inserted into the cylindrical portion, has a male screw formed at at least one end, and is elastically deformable in the bending direction; A female screw member that is screwed onto the male screw; It is "equipped with the following."

[0024] This is a wall material used to construct the wall structure described above. By using a wall material of this configuration, a wall structure that exhibits the above-mentioned effects can be constructed. Effect of the Invention

[0025] As described above, according to the present invention, it is possible to provide a lightweight fence that can be constructed with reduced labor and time even when the road width or site is narrow, a fence structure that gives a sense of solidity and is highly resistant to wind pressure, and the fence material that constitutes said fence structure. [Brief description of the drawings]

[0026] [Figure 1] This is an exploded oblique view of a wall panel unit that constitutes the wall structure of one embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded front view of a fence structure according to one embodiment of the present invention. [Diagram 3] FIG. 3(a) is a front view of the wall structure of FIG. 2, and FIG. 3(b) is a longitudinal cross-sectional view of the same wall structure cut at the centre of the tubular part. [Figure 4] FIG. 13 is a diagram for explaining the deflection of a fence. [Diagram 5] 1 is a load-displacement curve for the wall structure of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, a fence structure that is a specific embodiment of the present invention and a fence material that constitutes the fence structure will be described with reference to the drawings.

[0028] First, the fence material will be described mainly with reference to Figures 1 and 2. The fence material of this embodiment comprises multiple fence panel units 1, an elastic shaft 31, a female screw member 32, and a cover member 40. Here, the direction from one of the two areas partitioned by the fence to the other is referred to as the depth direction, and the length in the depth direction of each member constituting the fence panel unit 1 is referred to as the "thickness." Additionally, the direction perpendicular to both the depth direction and the height direction will be described as the width direction.

[0029] The fence panel unit 1 comprises a panel core material and a covering plate material. The panel core material comprises a honeycomb structure 10 in which cells having a hexagonal cross-sectional shape are arranged in series, and a tubular portion 11. In this embodiment, one panel core material comprises three honeycomb structures 10 and two tubular portions 11.

[0030] The panel core material and covering plate material are each made of resin or aluminum. For example, the following may be available: a fence panel unit 1 in which both the panel core material and covering plate material are made of resin, a fence panel unit 1 in which both the panel core material and covering plate material are made of aluminum, a fence panel unit 1 in which the panel core material is made of resin and the covering plate material is made of aluminum, and a fence panel unit 1 in which the panel core material is made of aluminum and the covering plate material is made of resin.

[0031] The outer shape of the honeycomb structure 10 is a rectangular parallelepiped. The tube portion 11 has a double structure of a square tube-shaped outer tube 11a and a cylindrical inner tube 11b, and the thickness and height of the outer tube 11a are equal to the thickness and height of the honeycomb structure 10. The outer diameter of the inner tube 11b is slightly shorter than the length of the inner peripheral surface of the outer tube 11a in the width direction, and the inner tube 11b is fixed to the inner peripheral surface of the outer tube 11a in a state of being fitted into the center of the outer tube 11a.

[0032] The two tubular portions 11 are fixed to the honeycomb structures 10 while being sandwiched between the adjacent honeycomb structures 10. A panel core material formed by joining the honeycomb structure 10 and the tubular portions 11 is a rectangular parallelepiped whose height is greater than its thickness and whose length in the width direction is greater than its height. The honeycomb structure 10 is joined to the tubular portions 11 with the axial direction of the cells aligned in the depth direction.

[0033] The covering plates include a pair of first covering plates 21 which respectively cover a pair of side surfaces of the panel core material where the cells of the honeycomb structure 10 are open, a pair of second covering plates 22 which respectively cover a pair of side surfaces which form the end faces in the width direction of the panel core material, and a pair of third covering materials which respectively cover the upper and lower surfaces of the panel core material.

[0034] The fence panel unit 1 is lightweight because the constituent materials, the panel core material and covering plate material, are made of resin or aluminum. If the size of the fence panel unit 1 is, for example, 30 cm to 60 cm in height, 150 cm to 350 cm in width, and 10 cm to 30 cm in thickness, one or two workers can easily carry one fence panel unit 1 manually.

[0035] The elastic shaft 31 is made of a composite material of glass fiber and resin. In this embodiment, it is made of a composite material of 75% by mass of glass fiber and 25% by mass of epoxy resin, which has high elasticity and undergoes large elastic deformation in the bending direction (the direction in which it bends like a bow, the direction in which it flexes). The elastic shaft 31 only needs to have a male thread formed on at least one end side, which is the upper end, but in this embodiment, the male thread is formed over the entire length. The diameter of the inner cylinder 11b in the fence panel unit 1 is slightly larger than the diameter of the elastic shaft 31.

[0036] On the other hand, the female screw member 32 has a thread groove on its inner circumferential surface that screws together with the male screw of the elastic shaft 31, and its outer circumferential surface is formed in a shape that can be engaged with a fastening tool such as a wrench.

[0037] The cover member 40 is an elongated member whose cross-sectional outer shape is U-shaped and opens downward, and the width of the opening is slightly larger than the thickness of the fence panel unit 1. In this embodiment, the cover member 40 is also made of resin or aluminum.

[0038] Next, the construction of a fence structure using the fence material with the above-mentioned configuration will be described mainly with reference to Figures 2 and 3. First, concrete is poured along the line along which the fence will be constructed (the line that should be the boundary between the two areas) to form the foundation 90. The cross section of the foundation 90 perpendicular to the extension direction of the fence is inverted T-shaped, and is formed so that the legs of the T are exposed above the ground surface. Then, when the foundation 90 is poured, the lower ends of the elastic shafts 31 are buried in the foundation 90. The spacing between the elastic shafts 31 is adjusted to match the spacing between the inner cylinders 11b in the fence panel unit 1.

[0039] Once the foundation portion 90 has been formed with the elastic shaft 31 in an upright position, the first layer of wall panel unit 1 is placed on the foundation portion 90 while the elastic shaft 31 is inserted through the inner tube 11b of the first layer of wall panel unit 1.

[0040] The second and subsequent fence panel units 1 are stacked on top of the first fence panel unit 1, similarly inserting the elastic shafts 31 through the inner cylinders 11b, until the fence reaches the desired height. Here, the case of stacking three fence panel units 1 is illustrated.

[0041] The length of the elastic shaft 31 is set to be slightly longer than the sum of the heights of a predetermined number of fence panel units 1 stacked in the height direction, the length embedded in the foundation 90, and the total height of the female screw member 32. The upper end of the elastic shaft 31, the lower end of which is fixed to the foundation 90, protrudes above the topmost fence panel unit 1, so the female screw member 32 is fastened to the male screw of this portion. At that time, a washer may be interposed between the upper surface of the topmost fence panel unit 1 and the female screw member 32. By tightening the female screw member 32 to the elastic shaft 31, the multiple fence panel units 1 stacked in the height direction are fastened together and firmly fixed to the foundation 90.

[0042] Once the female screw members 32 have been tightened to all of the elastic shafts 31, the cover member 40 is attached from above the uppermost fence panel unit 1. This results in the elastic shafts 31 and female screw members 32 protruding from the top surface of the uppermost fence panel unit 1 being covered by the cover member 40, improving the appearance and preventing rainwater from flowing into the inner tube 11b.

[0043] Through the above-described work, the fence panel units 1 are stacked in the height direction and connected together in the width direction to construct a fence structure in which a fence 1w made up of multiple fence panel units 1 is supported on the foundation 90. The multiple fence panel units 1 stacked in the height direction are not fixed to each other. Even without fixing, the multiple fence panel units 1 stacked in the height direction are fastened to each other by the elastic shaft 31 and the female screw member 32 and firmly fixed to the foundation 90.

[0044] In addition, by not fastening the multiple wall panel units 1 stacked in the height direction to each other, the elastic shaft 31 is allowed to elastically deform in the bending direction, and the wall 1w itself bends in the same direction. At this time, as the elastic shaft 31 bends, gaps are created between the upper and lower wall panel units 1, causing the wall 1w to bend.

[0045] The wall panel units 1 can be manufactured in advance at a factory. Also, because there is no need to fasten the wall panel units 1 together, the wall structure can be constructed with significantly less labor and time than with conventional concrete block walls or wet concrete walls.

[0046] In addition, the wall panel unit 1 is very lightweight because the panel core material and covering plate material, which are the constituent members, are made of resin or aluminum, and the panel core material is formed of a honeycomb structure 10 with many voids and a hollow cylindrical portion 11. The above-mentioned size setting allows one or two workers to carry it manually. Therefore, even at construction sites where the road width or site area is narrow and large transport vehicles or cranes cannot enter, the wall structure can be constructed without any problems. In addition, because each wall panel unit 1 is lightweight, even if the wall collapses due to an earthquake or the like, the damage can be kept to a minimum, and it can be easily removed and transported by hand.

[0047] Furthermore, the honeycomb structure 10 that constitutes the panel core material is a structure with many voids, which greatly contributes to making the wall panel unit 1 lightweight, while at the same time, as it is a structure of joined hexagonal cells, it distributes the stress that the wall 1w receives in multiple directions, giving it extremely high mechanical strength.

[0048] And, although honeycomb structure 10 with many voids is used for the panel core material, the outer surface of the panel core material is covered with first covering plate material 21 and second covering plate material 22. Therefore, from the outside it is indistinguishable from a solid wall structure, and since its thickness is greater than that of a fence made of netting or railing, it is possible to construct a wall that gives a sense of solidity.

[0049] Furthermore, since the height of the wall can be changed by changing the number of wall panel units 1 stacked vertically, a wall structure with high freedom in height can be constructed.

[0050] Furthermore, since the outer tube 11a of the tubular portion 11 is square cylindrical and has the same thickness and height as the rectangular honeycomb structure 10, the workability of joining the tubular portion 11 and the honeycomb structure 10 is good, and the panel core material formed by joining the tubular portion 11 and the honeycomb structure 10 can be shaped into a neat rectangular parallelepiped with no irregularities on its outer surface.

[0051] As described above, in this embodiment, in order to fix the wall panel units 1 stacked in the height direction to the base part 90, a highly elastic elastic shaft 31 is used, the wall panel units 1 stacked in the height direction are not fixed to each other, and each wall panel unit 1 is lightweight. Therefore, when the wall 1w receives wind pressure, the elastic shaft 31 is allowed to bend, and the wall 1w also bends with the bending of the elastic shaft 31. This will be explained based on the results of a static load test carried out on a specific wall structure. This test was carried out under the supervision of Professor Minoru Kunieda of the Faculty of Engineering at Gifu University, a member of the National University Corporation Tokai National Higher Education and Research System.

[0052] The fence structures used in the static load test were of two types: one in which three layers of resin fence panel units, both of which have polypropylene panel cores and covering plates, are stacked together and fixed to the foundation with two elastic shafts, and the other in which three layers of aluminum fence panel units, both of which have aluminum panel cores and covering plates, are stacked together and fixed to the foundation with two elastic shafts. The size of each fence panel unit was 450 mm high, 1800 mm wide, and 130 mm thick. The weight of the foundation was 16.8708 N, and the total weight excluding the foundation for each fence structure was 5.9160 N for the fence structure using resin fence panel units and 7.5684 N for the fence structure using aluminum fence panel units. The ground surface roughness classification was "III".

[0053] For each fence structure, a loading bracket weighing 2.7132 N was fixed to the top end of the fence, and a horizontal tensile force was applied via a wire attached to this. The load applied to each fence structure was changed, and the horizontal displacement D of the top end of the fence was measured, as shown in Figure 4. Displacement D was measured at three top ends in the width direction of the fence: the left end, right end, and center, and the average value was calculated. The load-displacement curve for each fence structure is shown in Figure 5.

[0054] As can be seen from Figure 5, when the load is increased from zero, the load-displacement curve is approximately a straight line for a fence structure using aluminum fence panel units up to a load of 2500N (up to point P1), and for a fence structure using plastic fence panel units up to a load of 2000N (up to point Q1). If points P1 and Q1 are called the "inflection points", then each fence structure will elastically deform in the bending direction under loads up to the inflection points, and within this range will return to its original state when the load is removed, but if a load exceeding the inflection point is applied, it is thought that a residual displacement will occur when the load is removed.

[0055] In addition, in the fence structure using aluminum fence panel units, damage occurred to the foundation when the load reached 3,975 N (point P2), and in the fence structure using plastic fence panel units, damage occurred to the fence panel unit when the load reached 3,775 N (point Q2).However, in both fence structures, the fence remained standing on its own at this point without collapsing.

[0056] Here, the displacement D at points P1, Q1, P2, and Q2, and the ratio (percentage) of the displacement D to the height H of the wall (in Figure 5, the height H from the top of the foundation 90 to the top of the wall 1w) are as follows. (Point P1) Displacement D: 60.2 mm, D / H: 4.5% (Point Q1) Displacement D: 75.3mm, D / H: 5.6% (Point P2) Displacement D: 197.4mm, D / H: 14.6% (Point Q2) Displacement D: 250.3mm, D / H: 18.5%

[0057] Furthermore, the loads at points P1, Q1, P2, and Q2 correspond to the following wind speeds: (Point P1) Load 2500N: Wind speed 49.0m / sec (Point Q1) Load 2000N: Wind speed 43.9m / sec (Point P2) Load 3975N: Wind speed 61.8m / sec (Point Q2) Load 3775N: Wind speed 60.2m / sec

[0058] As described above, the wall structure of the embodiment uses a highly elastic elastic shaft to fix the wall panel units stacked in the height direction to the foundation, the wall panel units stacked in the height direction are not fixed to each other, and each wall panel unit is lightweight. Therefore, when the wall is subjected to wind pressure, the elastic shaft is allowed to bend, and the wall bends in conjunction with the bending of the elastic shaft. The range in which the wall bends elastically is a range in which the ratio (D / H) of the horizontal displacement D of the top end of the wall to the wall height H is 4.5% to 5.6%. Furthermore, in this range in which the wall bends elastically, the wind speed that the wall can withstand corresponds to 44 m / sec to 49 m / sec.

[0059] In other words, unlike conventional concrete block walls or concrete walls, which withstand wind pressure due to the weight and rigidity of the wall itself, the wall structure of this embodiment withstands wind pressure by the deflection of the wall itself.

[0060] Additionally, when the ratio (D / H) of the horizontal displacement D of the wall's top end to the wall's height H exceeded 4.5%-5.6% but was in the range of 14.6%-18.5%, residual displacement occurred but the wall and foundation were not damaged. And when (D / H) reached 14.6%-18.5%, the wall or foundation was damaged but the wall remained standing without falling over. In this case, the wind speed that the wall could withstand was equivalent to 60m / sec-62m / sec.

[0061] In other words, the fence structure of this embodiment is not intended to not be damaged when subjected to large wind pressure, but rather to be able to withstand wind pressure without collapsing even if part of the fence structure is damaged, and is capable of withstanding large wind pressures equivalent to wind speeds of 60 m / sec to 62 m / sec without collapsing, even in a significantly deflected state.

[0062] The present invention has been described above with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the spirit of the present invention, as described below.

[0063] For example, the number of fence panel units 1 stacked in the height direction, and the number of honeycomb structures 10 and tube portions 11 per fence panel unit 1 are not limited to the above numbers.

[0064] In addition, the outer surfaces of multiple fence panel units 1 stacked in the height direction can be painted. In this case, the fence panel units 1 are not fixed to each other by the paint film, so that the occurrence of gaps between the upper and lower fence panel units 1 due to the deflection of the elastic shaft 31 is not prevented. [Explanation of symbols]

[0065] 1. Fence panel unit 10 Honeycomb structure 11 Cylinder part 11a Outer cylinder 11b Inner cylinder 21 First covering plate material 22 Second cover plate material 23 Third covering plate material 31 Elastic shaft 32 Female thread member 90 Foundation

Claims

1. A plurality of fence panel units each including a panel core material having a cylindrical portion joined to a honeycomb structure having cells each having a hexagonal cross section arranged in series, and a covering plate material covering at least the surface of the panel core material where the cells are open, The cylindrical portions are stacked on the base in the height direction so that the central axes of the cylindrical portions are aligned on the same line. An elastic shaft having a male screw formed at least at an upper end thereof is inserted into the cylindrical portion of each of the plurality of fence panel units, The lower end of the elastic shaft is embedded in the foundation, and a female screw member is screwed into the male screw at the upper end of the elastic shaft, thereby fixing the multiple fence panel units to the foundation, The panel core material and the covering plate material are each made of resin or aluminum, The elastic shaft is elastically deformed in the bending direction, and the fence panel units stacked in the height direction are not fixed to each other, When a wall made up of the wall panel units stacked in the height direction is subjected to wind pressure, the wall also bends in accordance with the elastic deformation of the elastic shaft in the bending direction. A fence structure characterized by:

2. The wall bends elastically until the ratio (D / H) of the horizontal displacement D of the top end of the wall to the height H of the wall reaches 4.5% to 5.6%.

2. A fence structure according to claim 1.

3. When the ratio (D / H) of the horizontal displacement D of the top end of the wall to the height H of the wall is between 14.6% and 18.5%, the wall bends without falling over. A fence structure according to claim 1 or 2.

4. a panel core material having a cylindrical portion joined to a honeycomb structure having cells each having a hexagonal cross section arranged in series; and a covering plate material covering at least the surface of the panel core material where the cells are open, the panel core material and the covering plate material being made of resin or aluminum; an elastic shaft that is longer than the total height of the plurality of fence panel units, has a thickness that allows it to be inserted into the cylindrical portion, has a male screw formed at at least one end, and is elastically deformable in the bending direction; A female screw member that is screwed onto the male screw; A fence material comprising:

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