Reinforcement material for handrail post, and manufacturing method of the same

Abstract

To make a reinforcement material used for reinforcing a handrail post have a rust-preventing effect mainly caused by water and oxygen.SOLUTION: A reinforcement material for a post comprises an upper core material 2 having a hollow cross-sectional shape, and a lower core material 3 having a solid cross-sectional shape which is inserted into the upper core material 2 and forms a gap with the entire inner peripheral surface of the upper core material 2, and is inserted into a post 6 having a hollow cross-sectional shape. A liquid-stopping material 4 with a water absorptivity is inserted into the upper core material 2 at a depth where an upper end face of the lower core material 3 is located when in use. The lower core material 3 is inserted into the upper core material 2 up to a position where an upper end face when in use contacts the liquid-stopping material 4. A low-viscosity, non-alkaline filling material 5 which exhibits water resistance after hardening is filled between the lower core material 3 and the upper core material 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a reinforcing material for handrail posts, which is used for the purpose of reinforcing handrail posts and has an effect of preventing rust caused mainly by the presence of water and oxygen, and a method for manufacturing the same. [Background technology]

[0002] The handrail posts are embedded in the reinforced concrete structure, so that they are supported by the structure and ensure stability against tipping over (see Patent Documents 1 to 5).

[0003] When the reinforcing material inserted into the hollow support of this handrail for the purpose of reinforcing it against bending, etc., consists of a hollow upper core material and a solid lower core material inserted into it (see Patent Document 6), the lower core material is stabilized within the upper core material by being inserted into a filling material such as adhesive or mortar that is filled into the upper core material (paragraph 0054 of Patent Document 6).

[0004] Here, when using aluminum profiles for the upper core material or supports, if an alkaline filler such as mortar is used to fix the lower core material, it is known that aluminum will corrode significantly in the presence of water and salt (see Patent Documents 7 and 8). Therefore, depending on the region, such as along the coast, mortar and the like may not be suitable as a filler.

[0005] When the filler is an adhesive, the problem of corrosion that occurs when the material is aluminum can be avoided (see Patent Documents 9 and 10). However, because adhesives are basically viscous, it is difficult to fill the adhesive densely between the lower core material and the upper core material, and to fill it evenly between the entire peripheral surface (entire surface) of the lower core material and the entire inner peripheral surface of the upper core material.

[0006] On the other hand, when the upper core of the reinforcing material is inserted inside a hollow support as in Patent Document 6, the section of the support above the upper core remains hollow when in use, so rainwater may seep inside through the connection with the handrail (paragraph 0056 of Patent Document 6), and condensation may form on the inner periphery of the support during use, and this condensation water is likely to accumulate on the upper core. In this case, if the adhesive is not densely packed between the lower core and the upper core, if the solid lower core is made of steel, the presence of water and oxygen may cause rust in the lower core.

[0007] In Patent Documents 9 and 10, adhesive is filled between the upper and lower core materials and the entire length of the lower core material is protected by adhesive, which is thought to reduce the possibility of rust due to condensation water, etc. when the lower core material is made of steel.

[0008] However, when manufacturing a core material (reinforcement material) consisting of an upper core material and a lower core material as in Patent Documents 6 and 10, if the lower core material is inserted into the upper core material upside down during manufacturing compared to when in use as in Patent Document 6 and adhesive is injected from the upper end side of the upper core material (paragraph 0056 of Patent Document 6), if it is intended to embed the entire length of the lower core material in the adhesive, since the upper end surface of the lower core material during manufacturing will be located lower than the upper end surface of the upper core material, it becomes necessary to use an end member to determine the insertion depth of the lower core material (paragraph 0056).

[0009] The end members also serve to prevent adhesive from leaking downward (paragraph 0056), but since they also serve to position the lower core material by coming into contact with the lower end surface of the lower core material when inserted into the upper core material during manufacture, the lower end surface of the lower core material during manufacture is in close contact with the upper surface of the end members.

[0010] In addition, if the lower core is made of steel, the buoyancy of the adhesive will not cause the lower end of the lower core to rise above the top of the end member even after the adhesive is injected, so the lower end of the lower core will remain in close contact with the top of the end member. This condition is independent of whether or not the adhesive will leak out from the gap between the end member and the upper core.

[0011] This means that there may be some areas between the lower end surface of the lower core material and the upper surface of the end member during manufacturing where the adhesive does not completely penetrate, and that the entire surface of the lower end surface of the lower core material during manufacturing is not necessarily covered with adhesive. The same can be said for the sealant interposed between the lower end surface of the reinforcing material and the seat plate in Patent Document 10 (paragraph 0022).

[0012] Although the sealing material may have water absorption (liquid absorption) in the long term, it is not substantially water absorbent in the short term. In particular, in Patent Document 10, butyl tape, which has high waterproofness (water resistance) and high adhesion to the contacting material, is used (see Patent Documents 11 and 12), and is adhered to the entire bottom end surface of the reinforcing material (paragraphs 0020 and 0022 of Patent Document 10), so that the adhesive is likely to be prevented from getting between the bottom end surface of the reinforcing material and the sealing material (butyl tape). For this reason, the adhesive is not expected to get between the two, and there remains a possibility that the bottom end surface of the reinforcing material will not be covered by the adhesive. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] JP-A-3-55349 (page 3, upper left column, line 7 to page 4, upper right column, line 6, Figures 1 to 6) [Patent Document 2] JP 4-231543 A (paragraphs 0007-0009, Figures 1 and 2) [Patent Document 3] Japanese Utility Model Patent Publication No. 5-4503 (Column 3, line 9 to Column 6, line 16, Figures 1 to 6) [Patent Document 4] JP-A-7-97845 (paragraphs 0009-0013, Figures 1 and 2) [Patent Document 5] Japanese Utility Model Application Publication No. 5-52063 (Claim 1, paragraphs 0011-0016, Figures 1 and 2) [Patent Document 6] Patent No. 5134305 (Claim 1, paragraphs 0038-0067, Figures 1 and 2) [Patent Document 7] Publication No. 52-33719 (column 2, lines 1 to 16) [Patent Document 8] JP 2005-67903 A (paragraph 0002) [Patent Document 9] JP 2019-60110 A (paragraphs 0026 to 0030, Figures 1 to 5) [Patent Document 10] Patent No. 7216443 (paragraphs 0015-0030, figures 1-4) [Patent Document 11] JP 2001-193361 A (paragraph 0043, Figure 2) [Patent Document 12] JP 2017-14762 A (paragraph 0040, figure 4) Summary of the Invention [Problem to be solved by the invention]

[0014] If the entire bottom end surface of the lower core material in Patent Document 6 is not covered with adhesive during manufacture, the entire length of the lower core material will not be completely covered with adhesive. As a result, if condensation water or the like that accumulates on the end member located above the lower core material seeps into the lower core material for some reason during use, it may cause rust on the upper end surface of the lower core material.

[0015] If condensation water or the like accumulates on the end member, a small gap may form between the inner surface of the upper core material and the outer surface of the end member due to a decrease (deterioration) in the restoring force (elasticity) of the end member over time, and it is assumed that condensation water or the like will reach the upper end surface of the lower core material through this gap due to capillary action. Elastic foam material is used for the end member for the convenience of inserting it into the upper core material and maintaining that inserted state with its restoring force, but if the restoring force of the end member decreases, a gap will easily form between it and the upper core material.

[0016] In the case of Patent Document 6, the formation of voids due to deterioration and capillary action can also occur between the upper end surface of the lower core material and the lower surface of the end member when in use, so there is a possibility that condensed water etc. will penetrate between the upper end surface of the lower core material and the lower surface of the end member. In the case of Patent Document 10, capillary action can also occur between the lower end surface of the reinforcing material when in use, or between the lower end surface of the hardened adhesive and the upper surface of the waterproof (water-resistant) sealing material, so there is a possibility that condensed water etc. will penetrate between the reinforcing material or the lower end surface of the adhesive and the sealing material.

[0017] In the case of Patent Document 6, if rust occurs on the upper end surface of the lower core in use, the rusted area will progress downward. This possibility of rusting occurs when the upper core is turned upside down when injecting adhesive into the upper core and inserting the lower core, and it can be said to be a particular problem faced when using an end member to position the lower core.

[0018] In view of the above background, the present invention proposes a reinforcement material for handrail supports that has a structure that enables the entire lower end surface of the lower core material to be covered with adhesive during production, and enables the entire length of the lower core material to be completely covered with adhesive, and a method for producing the same. [Means for solving the problem]

[0019] The reinforcing material for handrail posts of the invention described in claim 1 comprises an upper core material with a hollow cross-sectional shape, and a lower core material with a solid cross-sectional shape that is inserted into the upper core material and that, when inserted into the upper core material, forms a gap between the entire circumferential surface and the entire inner circumferential surface of the upper core material, and is a reinforcing material for handrail posts that is inserted into a post with a hollow cross-sectional shape with the upper core material and the lower core material integrated together, a liquid-stopping material having water-absorbency capable of absorbing a liquid having fluidity is inserted into the upper core material at a depth where an upper end surface of the lower core material is located when in use; the lower core material is inserted into the upper core material to a position where an upper end surface of the lower core material contacts the liquid-stopping material when in use, and a low-viscosity, non-alkaline filler that exhibits water resistance after hardening is filled between the lower core material and the interior of the upper core material, A constituent requirement is that the filler is distributed between the entire peripheral surface of the lower core member and the entire inner peripheral surface of the upper core member, and beneath the lower end surface of the lower core member when in use.

[0020] "A lower core material which, when inserted into an upper core material, forms a gap between its entire circumferential surface and the entire inner circumferential surface of the upper core material" means that, when the lower core material 3 is inserted into the upper core material 2 as shown in Figure 6-(b), a gap, however small, is formed between the entire circumferential surface (all surfaces) of the lower core material 3 and the entire inner circumferential surface of the upper core material 2, and each face of the lower core material 3 and each opposing face of the upper core material 2 are not in contact with each other. The cross-sectional shapes of the upper core material 2 and the lower core material 3 are not important.

[0021] "The liquid-stopping material is inserted into the upper core to a depth where the upper end face of the lower core will be located when in use" means that the liquid-stopping material 4 is inserted to a depth where the upper end face of the lower core 3 will be located when the reinforcing material 1 is placed in the usage state. As described later, during production, the upper core 2 and the lower core 3 are combined in a state that is upside down compared to when in use (claim 4), so the liquid-stopping material 4 is inserted so that the upper end face of the liquid-stopping material 4 is located where the lower end face of the lower core 3 should be located during production, and is kept in that position. The lower end face of the lower core 3 during production becomes the upper end face when in use.

[0022] "The lower core material is inserted into the upper core material until its top end face comes into contact with the liquid-stopping material" means that, during production, which is upside down from when in use, the lower core material 3 is inserted into the upper core material 2 until its bottom end face comes into contact with the top face (top end face) of the liquid-stopping material 4. When the lower core material 3 is inserted into the upper core material 2, the bottom end face of the lower core material 3 is positioned by the top face of the liquid-stopping material 4. At this time, the top end face of the lower core material 3 during production is positioned below the top end face of the upper core material 2 so that the entire length of the lower core material 3 is embedded (submerged) in the filler 5, such as an adhesive, that is injected into the upper core material 2.

[0023] "A water-absorbing liquid-stopping material capable of absorbing a liquid having fluidity is inserted" means that, if the filler 5, which is mainly an adhesive, has fluidity at the time of injection, the liquid-stopping material 4 itself has the property of being able to absorb water (liquid) through the filler 5, even if only slightly. Here, "water absorption" means "liquid absorption." "Having water absorption" means that the liquid-stopping material 4 itself (the material itself used as the liquid-stopping material 4) has a water absorption rate, even if only slightly. However, although the liquid-stopping material 4 has water absorption, if the water absorption rate is high, it will easily absorb condensation water that accumulates on the liquid-stopping material 4 during use, so it is better for the water absorption rate not to be high.

[0024] Since the liquid-stopping material 4 has water absorbency, the bottom surface (bottom end surface) of the liquid-stopping material 4 during use becomes the top surface during manufacture, so even if the entire surface of the bottom end surface of the lower core material 3 is in complete contact with the top surface of the liquid-stopping material 4, a small amount of the filler 5 can permeate into the upper layer of the liquid-stopping material 4 through the gap between the outer circumferential surface of the lower core material 3 and the inner circumferential surface of the upper core material 2. The filler 5 can permeate at least the region of the top surface of the liquid-stopping material 4 up to the outer circumferential part (edge ​​part) of the bottom end surface of the lower core material 3 during manufacture and the inner circumferential part of the upper core material 2 on that outer circumferential side.

[0025] As a result, a filler layer 51 is formed of the filler 5 that has permeated into the liquid-stopping material 4 on the upper surface side of the liquid-stopping material 4 below the lower end surface of the lower core material 3 during manufacture. If the filler 5 is injected prior to the insertion of the lower core material 3 into the upper core material 2 as shown in Figures 3-(b) and (c), it becomes easier to cause the filler 5 to permeate the entire surface of the upper surface side of the liquid-stopping material 4 during manufacture.

[0026] Therefore, even though the lower end surface of the lower core material 3 is in close contact with the upper surface of the liquid-stopping material 4 during manufacture, the lower end surface of the lower core material 3 is located in the filling material layer 51, so the entire surface of the lower end surface of the lower core material 3 is completely covered with the filling material 5. Since this "filling material layer 51" is formed in the liquid-stopping material 4, it will hereinafter be referred to as the "internal filling material layer 51" to distinguish it from the "upper filling material layer 71" and "lower filling material layer 72" described below.

[0027] As described above, the upper end surface of the lower core 3 during manufacture is located lower than the upper end surface of the upper core 2, and is therefore buried in the filling material 5 after injection of the filling material 5 is completed, and therefore, in addition to the lower end surface of the lower core 3 during manufacture being located in the internal filling material layer 51, the entire length from the lower end surface to the upper end surface of the lower core 3 is located completely within the filling material 5 and is covered by the filling material 5. As a result, the entire length of the lower core 3 remains completely covered by the filling material 5 even when in use.

[0028] "Low viscosity filler" means that the viscosity of the filler 5 itself is low enough that it can enter the gap formed between the upper core 2 and the lower core 3 during production. A good guide for viscosity is about 1 Pa·s or less, but the viscosity value itself depends on the size of the gap, so it is not necessarily limited to this value. The filler 5 is fluid when injected into the gap between the lower core 3 inside the upper core 2, and hardens over time, becoming water resistant. By hardening and becoming water resistant, it covers the entire length of the lower core 3, protecting it from the aforementioned condensation water, etc. "Water resistance" will be explained later.

[0029] Because the filler 5 has low viscosity, even if the gap between the upper core material 2 and the lower core material 3 is small, the filler 5 penetrates into the gap and wraps around the entire circumference of the lower core material 3.As a result, while the filler 5 has fluidity, Pascal's principle is used to apply liquid pressure evenly from the outer periphery of the lower core material 3, so that the lower core material 3 is positioned in a neutral position on a cross section perpendicular to the material axis of the upper core material 2.

[0030] For example, if the cross-sectional shape of the lower core material 3 is rectangular, equal liquid pressure acts from both short side and long side, so if the upper core material 2 is shaped to surround the lower core material 3, the lower core material 3 is positioned so that its cross-sectional center coincides with the cross-sectional center of the upper core material 2. As a result, the filling material 5 is distributed between the peripheral surface of the lower core material 3 and the inner peripheral surface of the upper core material 2, and beneath the lower end surface of the lower core material 3 when in use.

[0031] "The filling material is distributed below the lower end surface of the lower core material when in use" is made possible by, during production, positioning the upper end surface of the lower core material 3 below the upper end surface of the upper core material 2 as described above, and injecting the filling material 5 up to near the upper end surface of the upper core material 2, so that the entire length of the lower core material 3 is embedded in the filling material 5.

[0032] "Non-alkaline" means that the filler 5 is a material that does not have alkaline properties like cement-based materials such as mortar, and is basically a neutral filler, with epoxy resin adhesives being the most suitable. If the filler 5 is alkaline as described above, when an aluminum alloy is used as a component of the reinforcing material 1, for example the upper core material 2, the aluminum alloy may corrode in the presence of water and salt, so the purpose of this is to exclude alkaline materials that cause this phenomenon.

[0033] "Exhibiting water resistance after hardening" means that after the filler 5 hardens, it has resistance to water penetration (impregnation) and exhibits the ability to prevent condensation water generated inside the upper core 2 from reaching the lower core 3. "Water resistance" can also be rephrased as "waterproofing." The water resistance of the hardened filler 5 completely prevents water from penetrating into the lower core 3 when the internal filler layer 51 covers the upper end surface of the lower core 3 in the used state as described above. Epoxy resin-based adhesives exhibit water resistance after hardening.

[0034] As long as the liquid-stopping material 4 exerts a restoring force and the outer peripheral surface continues to adhere to the inner peripheral surface of the upper core material 2, condensation water generated in the upper core material 2 usually accumulates on the upper surface of the liquid-stopping material 4. However, if a small gap occurs between the outer peripheral surface of the liquid-stopping material 4 and the inner peripheral surface of the upper core material 2 due to a decrease (deterioration) in the restoring force of the liquid-stopping material 4, it is expected that the liquid will reach the upper end surface of the lower core material 3 in the used state through the gap due to capillary action. Even in this case, since the hardened filling material 5 (internal filling material layer 51) has water resistance, the entire upper end surface of the lower core material 3 adheres to the internal filling material layer 51 (is located in the internal filling material layer 51) and is protected from water, the occurrence of rust on the upper end surface of the lower core material 3 is prevented.

[0035] 1-(b), the lower core 3, which descends onto the liquid-stopping material 4 during production, sinks slightly under its own weight from the top surface of the elastic liquid-stopping material 4. As a result, the low-viscosity filler 5, which has been injected into the lower core 3 beforehand or will be injected later, can permeate from the top surface side of the liquid-stopping material 4, and therefore, while the internal filling layer 51 is positioned on the top surface of the lower core 3 in the used state, it is formed so as to surround the edge portion from the outer periphery as well as the top surface of the lower core 3, so that the edge portion is protected by the internal filling layer 51 from the outer periphery.

[0036] As shown in FIG. 1-(a), a drain hole 2a that connects the inside and outside of the upper core material 2 may be formed at a position above the top surface of the liquid-stopping material 4 in the upper core material 2 in the used state (claim 2). In this case, a filler 7 having a higher viscosity (higher viscosity) than the low-viscosity filler 5 injected between the upper core material 2 and the lower core material 3 during manufacture is filled between the top surface of the liquid-stopping material 4 and the top of the drain hole 2a, and if an upper filler layer 71 is formed on the liquid-stopping material 4 as shown in FIG. 4-(a) (claim 2), safety against infiltration of condensed water or the like into the lower core material 3 side is improved when condensed water or the like accumulates on the liquid-stopping material 4. The "filler 5 injected between the upper core material 2 and the lower core material 3" refers to the filler 5 injected over the entire length of the lower core material 3.

[0037] "Drainage holes are formed at a position equal to or higher than the upper surface of the liquid-stopping material" means that the lowest part of the drainage holes 2a is formed at a position equal to or higher than the upper surface of the liquid-stopping material 4, and includes the fact that the lowest part of the drainage holes 2a coincides with the upper surface of the liquid-stopping material 4 and that the lowest part is at a position spaced above the upper surface of the liquid-stopping material 4. In either case, if the upper surface of the upper filling material layer 71 is equal to or higher than the lowest part of the drainage holes 2a, the upper filling material layer 71 will not block the drainage holes 2a, and condensed water will not accumulate on the upper filling material layer 71.

[0038] If the upper surface of the upper filling material layer 71 is positioned below the bottom of the drainage hole 2a, condensation water and the like may accumulate on the upper filling material layer 71. However, since the upper filling material layer 71 prevents penetration into the liquid-stopping material 4, including by capillary action, the condensation water and the like is prevented from reaching the upper end surface of the lower core material 3, thereby improving safety against penetration into the lower core material 3.

[0039] Even when the drainage holes 2a are formed, the condensed water and the like that has accumulated on the liquid-stopping material 4 or the upper filling material layer 71 is not necessarily completely drained through the drainage holes 2a, and in the form of droplets, may remain on the liquid-stopping material 4 or the upper filling material layer 71 due to surface tension. Since it is expected that this remaining condensed water and the like will flow around to the underside of the liquid-stopping material 4 due to capillary action, it is significant that the upper end surface of the lower core material 3 is in close contact with the internal filling material layer 51 when in use, regardless of the presence or absence of the drainage holes 2a.

[0040] Furthermore, if a filler 7 having a higher viscosity than the low-viscosity filler 5 injected between the upper core material 2 and the lower core material 3 during manufacture is filled under the underside of the liquid-stopping material 4 when in use (claim 3), even if the length (mass) of the lower core material 3 is large, the impact force that the descending lower core material 3 applies to the liquid-stopping material 4 can be reduced, thereby increasing the accuracy of the positioning of the lower core material 3.

[0041] As shown in Figure 3-(b), the lower core material 3 is inserted after an appropriate amount of filler 5 is injected in order to reduce the impact force when the lower core material 3 comes into contact with the liquid-stopping material 4, but because the viscosity of the filler 5 is low, the impact force from the lower core material 3 is likely to be directly transmitted to the liquid-stopping material 4, which may cause the liquid-stopping material 4 to drop. If the liquid-stopping material 4 drops, the lower core material 3 will no longer be positioned accurately.

[0042] Therefore, as shown in FIG. 5-(e), by filling the filler 5 with a higher viscosity filler 7 than the low-viscosity filler 5 injected between the upper core material 2 and the lower core material 3 during production, the viscous resistance force generated on the surface of the lower core material 3 when the lower core material 3 descends can be increased, thereby reducing the impact force applied to the liquid-stopping material 4 and the possibility of the liquid-stopping material 4 descending. By being able to hold the liquid-stopping material 4 in the position at the time of insertion, the descended lower core material 3 can be accurately positioned. After the advance injection of the filler 7, it is optional whether to inject the filler 5 before the lower core material 3 descends or after the lower core material 3 descends.

[0043] 4-(b) shows an example of the usage state when the high-viscosity filler 7 is injected before the low-viscosity filler 5 is injected during production. Here, the lower filler layer 72 consisting of the filler 7 injected first on the liquid-stopping material 4 side and the layer of the filler 5 injected afterwards are depicted as being clearly separated, but since the lower core material 3 is lowered while both fillers 7 and 5 have fluidity, in reality the two fillers 7 and 5 are mixed, so the lower filler layer 72 and the layer of the filler 5 are not necessarily clearly separated.

[0044] The handrail support reinforcement material according to claim 1 includes a step of inserting a water-absorbent liquid-stopping material 4 into the upper core material 2 to a depth where the upper end surface of the lower core material 3 is located when in use, while the upper core material 2 is turned upside down from when in use; The product is manufactured by injecting a low-viscosity, non-alkaline filling material 5, which becomes water-resistant after hardening, into the interior of the upper core material 2 until the upper end surface of the lower core material 3 is buried, and then inserting the lower core material 3 into the interior of the upper core material 2 until the lower end surface of the lower core material 3 comes into contact with the liquid-stopping material 4 (Claim 4).

[0045] It does not matter whether the injection of the filler 5 or the insertion of the lower core 3 is performed first, and they may be performed in parallel. As a result of injecting the filler 5, the filler 5 is spread between the peripheral surface of the lower core 2 and the inner peripheral surface of the upper core 2, and under the lower end surface of the lower core 3 when in use, and the entire length of the lower core 3 is buried in the filler 5.

[0046] The handrail support reinforcement material described in claim 2 is manufactured by, after the process of inserting the liquid-stopping material 4 into the upper core material 2, turning it upside down from the state it is in at this process to the state it will be in when in use, and injecting (filling) a filler 7 having a higher viscosity (high viscosity) than the low-viscosity filler 5 injected from the top end face of the upper core material 2 over the entire length of the lower core material 3 onto the liquid-stopping material 4, thereby forming an upper filler layer 71 on top of the liquid-stopping material 4 in the state it will be in use.

[0047] The reinforcement material for handrail supports described in claim 3 is manufactured by, after the process of inserting the liquid-stopping material 4 into the upper core material 2, injecting (filling) a filler 7 having a higher viscosity than the low-viscosity filler 5 on top of the liquid-stopping material 4 at the time of manufacture before injecting the low-viscosity filler 5 over the entire length of the lower core material 3 as shown in Figure 5-(e), thereby forming a lower filler layer 72 under the liquid-stopping material 4 in the used state as shown in Figure 4-(b). Effect of the Invention

[0048] Since the absorbent liquid-stopping material capable of absorbing fluid liquids is inserted at the depth where the upper end surface of the solid lower core material inserted into the hollow upper core material will be located when in use, even if the entire lower end surface of the lower core material is completely attached to the upper surface of the liquid-stopping material when manufactured, the filling material can penetrate slightly into the upper layer of the liquid-stopping material when manufactured through the gap between the outer peripheral surface of the lower core material and the inner peripheral surface of the upper core material, forming an internal filling material layer.

[0049] As a result, while the lower end surface of the lower core material is in close contact with the upper surface of the liquid-stopping material during manufacture, the lower end surface can be positioned within the internal filling material layer. Therefore, in addition to allowing the filling material to spread under the lower end surface of the lower core material when in use, the entire length from the lower end surface to the upper end surface of the lower core material can be completely embedded in the filling material and covered with the filling material.

[0050] Since the filler exhibits water resistance after hardening, condensation water formed within the upper core material accumulates on the upper surface of the liquid-stopping material and, due to deterioration of the liquid-stopping material and capillary action, may reach the upper end surface of the lower core material when in use through a small gap between the inner surface of the upper core material. However, the entire upper end surface of the lower core material covered with the internal filling material layer can be protected from water, thereby preventing the formation of rust on the upper end surface of the lower core material. [Brief description of the drawings]

[0051] [Figure 1] 1(a) is a longitudinal cross-sectional view showing the completed state of a reinforcement material for handrail supports having an upper core material and a lower core material, and FIG. 1(b) is an enlarged view of the upper end surface portion of the lower core material in FIG. [Diagram 2] (a) is an elevational view showing the lower core, (b) is an end view of (a), (c) is a longitudinal cross-sectional view showing the upper core, (d) is an end view of (c), (e) is a longitudinal cross-sectional view showing the lower core inserted into the upper core, and (f) is an end view of (e). [Diagram 3] 1(a) to 1(d) are vertical cross-sectional views showing an example of a work procedure, from inserting the liquid-stopping material into the upper core material, to inserting the lower core material and filling it with the filling material, with the upper core material turned upside down compared to when in use. [Figure 4] 1A is a longitudinal cross-sectional view showing an example in which an upper filler layer made of a high-viscosity filler is formed between the upper surface of the liquid-stopping material and below the top of the drainage hole, and FIG. 1B is a longitudinal cross-sectional view showing an example in which a lower filler layer made of a high-viscosity filler is formed below the lower surface of the liquid-stopping material. [Diagram 5] 4(a) to 4(h) are vertical cross-sectional views showing an example of a more detailed work procedure than FIG. [Figure 6] (a) is a longitudinal cross-sectional view showing how reinforcing material is inserted inside the handrail support and the lower end of the reinforcing material is fixed to the structural body (body) of the structure, and (b) is a cross-sectional view taken along line xx in (a). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0052] Figure 1-(a) shows an example configuration of a reinforcing material 1 for a handrail support, which comprises an upper core material 2 with a hollow cross-sectional shape and a lower core material 3 with a solid cross-sectional shape that is inserted axially into the upper core material 2 and forms a gap between its entire circumferential surface and the entire inner circumferential surface of the upper core material 2 when inserted into the upper core material 2, and which is inserted into a support 6 with a hollow cross-sectional shape shown in Figure 6 with the upper core material 2 and lower core material 3 integrated together.

[0053] Fig. 1-(a) shows the state (orientation) of the reinforcing material 1 when in use. In Fig. 1-(a), the dashed line in the filling material 5 indicates the outline of the lower core material 3. The upper core material 2 and the support pillars 6 are mainly made of extruded aluminum alloy material, and the lower core material 3 is mainly made of steel material such as flat bar, but is not limited to this.

[0054] A liquid-stopping material 4 having water-absorbency capable of absorbing liquids having fluidity is inserted into the upper core material 2 at a depth where the upper end face of the lower core material 3 will be located when in use, and the lower core material 3 is inserted into the interior of the upper core material 2 until its upper end face when in use comes into contact with the lower surface (lower end face) of the liquid-stopping material 4. During manufacture, the upper surface (upper end face) of the liquid-stopping material 4 is inserted into the upper core material 2 in a positioned state so that it is located at the depth where the lower end face of the lower core material 3 should be located.

[0055] With the liquid-stopping material 4 inserted into the upper core 2, the filler 5, which exhibits water resistance after hardening, is filled in a fluid state between the inner peripheral surface of the upper core 2 and the surface of the lower core 3. As shown in Fig. 6-(b) and Fig. 1, the filler 5 is spread between the entire peripheral surface of the lower core 3 and the entire inner peripheral surface of the upper core 2, and under the lower end surface of the lower core 3 when in use. The entire length of the lower core 3 is buried in the filler 5.

[0056] When the reinforcing material 1 is manufactured, the upper core material 2 and lower core material 3 are combined in a state that is upside down compared to when in use, as shown in Figure 2. In this state, the lower core material 3 is inserted into the upper core material 2, but prior to the insertion of the lower core material 3, the liquid-stopping material 4 is inserted into the upper core material 2. The liquid-stopping material 4 serves to position the bottom end surface of the lower core material 3 when the lower core material 3 is inserted, so it must remain inserted into the upper core material 2 so that it does not drop due to the mass (weight) of the lower core material 3 when the lower core material 3 is inserted.

[0057] In this regard, the liquid-stopping material 4 is inserted into the upper core material 2 in a state compressed in the thickness direction of the upper core material 2, and the inserted state is basically maintained by the restoring force in the compressed state, so the liquid-stopping material 4 is made of an elastic material. Since the liquid-stopping material 4 needs to have water absorption as described above, specifically, synthetic resins (foamed resins) such as expanded polyethylene and expanded polystyrene are used. However, if the water absorption rate is high, the later-described high-viscosity filler 7 injected onto the liquid-stopping material 4 may easily permeate into the liquid-stopping material 4, which may prevent the upper filler layer 71 from being formed to the required thickness, and in addition, condensation water and the like that accumulates on the liquid-stopping material 4 during use may easily be absorbed, so it is better for the water absorption rate to be relatively low.

[0058] The water absorption rate of foamed polyethylene is 0.004g / cm 3 The water absorption rate of expanded polystyrene is about 0.04 g / cm 3 When the dimensions of the liquid-stopping material 4 are 14 mm wide x 35 mm long x 20 mm thick, the volume of the liquid-stopping material 4 is 1.4 x 3.5 x 2 = 9.8 cm 3 Therefore, theoretically, 9.8×0.004=0.039 g of filler 5 having fluidity can permeate into the foamed polyethylene.

[0059] In this case, the surface area of ​​the liquid-stopping material 4 is 1.4 × 3.5 = 4.9 cm 2 Therefore, the filler 5 can penetrate to a depth of 0.039÷4.9=0.008 cm=0.08 mm from the top surface of the liquid-stopping material 4. Since the water absorption rate of expanded polystyrene is about 10 times, the filler 5 can penetrate to a depth of 0.8 mm.

[0060] When the filler 5 is injected, a small amount of the filler 5 penetrates from the upper surface of the liquid-stopping material 4, forming an internal filling layer 51. When the reinforcing material 1 is in use, the internal filling layer 51 is disposed on the lower surface side of the liquid-stopping material 4 as shown in Fig. 1, and is in close contact with the upper end surface and edge of the lower core material 3. The internal filling layer 51 protects the upper end surface side portion, including the edge portion of the lower core material 3, from rainwater that has infiltrated into the upper core material 2 and condensation water that has formed on the inner surface when this water penetrates into the lower core material 3 side due to capillary action between the inner surface of the upper core material 2 and the deteriorated liquid-stopping material 4.

[0061] The filler 5 is a low-viscosity, non-alkaline (neutral) material that has fluidity when injected and hardens over time. An epoxy resin adhesive is mainly used for the filler 5, but other adhesives can also be used as long as they have a low enough viscosity to be injected evenly between the entire circumference of the lower core 3 inserted into the upper core 2 and the inner surface of the upper core 2, and materials other than adhesives, such as solidifiers, can also be used as long as they are neutral and have the property of hardening over time.

[0062] In principle, as shown in Fig. 1-(a), drainage holes 2a for draining the above-mentioned condensed water and the like are formed penetrating between the inner and outer circumferential surfaces of the upper core material 2 at a position above the upper surface of the liquid-stopping material 4 when the upper core material 2 is in use. The lowest part of the drainage holes 2a is basically aligned with the upper surface of the liquid-stopping material 4, but when an upper filling material layer 71 formed of a hardened high-viscosity filling material 7 is formed on the upper surface of the liquid-stopping material 4 when in use as shown in Fig. 4-(a), the lowest part of the drainage holes 2a is aligned with the upper surface of the upper filling material layer 71, etc. The shape of the drainage holes 2a is arbitrary.

[0063] Here, an example of the manufacturing procedure for the reinforcing material 1 shown in Figures 1 and 2 will be described with reference to Figures 3-(a) to (d). The reinforcing material 1 is manufactured in a state in which it is upside down from the state in which it is used, as shown in Figure 3-(a). The upper core material 2 has a cross-sectional shape such as a hollow box shape, as shown in Figures 2-(d) and 6-(b), and the lower core material 3 has a solid cross-sectional shape that can be inserted into the upper core material 2, as shown in Figure 2-(b). A drainage hole 2a is formed in the upper core material 2 in the state in which it is used, at a position corresponding to the top surface of the liquid-stopping material 4.

[0064] First, as shown in Fig. 3-(a), the liquid-stopping material 4 is inserted into the upper core material 2 so that the upper surface of the liquid-stopping material 4 is located at the position of the lower end surface of the lower core material 3 during manufacture. At this time, the lower core material 3 is inserted so that the uppermost part of the drainage hole 2a during manufacture coincides with the lower surface of the liquid-stopping material 4 or the lower surface of the liquid-stopping material 4 is below the uppermost part of the drainage hole 2a. When an upper filling material layer 71 is formed on the upper surface of the liquid-stopping material 4 in the used state as shown in Fig. 4-(a), the lower surface of the liquid-stopping material 4 is located above the uppermost part of the drainage hole 2a during manufacture by the amount of the upper filling material layer 71.

[0065] As a method for accurately inserting the liquid-stopping material 4 at a determined position, for example, when forming (drilling) the drainage holes 2a, a burr is left protruding from the inner peripheral surface of the upper core material 2, with which the underside of the liquid-stopping material 4 can be engaged, or an insertion rod is used that indicates the insertion depth of the liquid-stopping material 4 from the upper end surface of the upper core material 2 during manufacture. If drainage holes 2a are formed in multiple plate elements (flanges and webs) of the upper core material 2 and a burr is left protruding, the stability of the liquid-stopping material 4 during insertion is increased. As described above, the liquid-stopping material 4 is compressed from the outer periphery into the upper core material 2 and inserted in a contracted state, so that when the insertion position is adjusted, the restoring force keeps the material in close contact with the inner peripheral surface of the upper core material 2 and it can withstand the load and impact force when the lower core material 3 is inserted.

[0066] After the liquid-stopping material 4 is inserted, the lower core 3 is inserted on the liquid-stopping material 4 in the upper core 2, and low-viscosity filler 5 is injected, as shown in Fig. 3-(b) and (c). In this case, rather than inserting the lower core 3 directly on the liquid-stopping material 4 and dropping it in, it is more appropriate to inject an appropriate amount of filler 5 before inserting the lower core 3, as shown in (b), and then insert the lower core 3, so as to reduce the impact force applied to the liquid-stopping material 4. The appropriate amount is an amount in which more than half or about the entire length of the lower core 3 is buried in the injected filler 5. Note that the entire amount of filler 5, which is predetermined by calculation or testing, may be injected prior to the insertion of the lower core 3, or the lower core 3 may be inserted before the injection of the filler 5.

[0067] As shown in Fig. 1-(a), when the reinforcing material 1 is in use, the upper end surface of the lower core material 3 is positioned below the upper end surface of the upper core material 2 as shown in Fig. 3-(c) so that the entire length of the lower core material 3 is embedded in the filling material 5. If the entire length of the lower core material 3 is not embedded when the first filling material 5 is injected as shown in Fig. 3-(b), after the lower core material 3 is inserted, additional filling material 5 is injected above the upper end surface of the lower core material 3 as shown in (d) so that the entire length of the lower core material 3 as manufactured is embedded in the filling material 5.

[0068] 3-(c) and 3-(d), the lower end surface of the lower core material 3 contacts (adheres to) the upper end surface of the liquid-stopping material 4, and when in use, the upper end surface of the lower core material 3 appears to be in close contact with the lower surface of the liquid-stopping material 4. However, since an internal filling material layer 51, although extremely thin, is formed on the lower surface side of the liquid-stopping material 4 as shown in FIG. 1, the upper end surface of the lower core material 3 when in use is in close contact with the internal filling material layer 51.

[0069] 4-(a) shows an example in which a filler 7 having a higher viscosity than the low-viscosity filler 5 injected between the upper core material 2 and the lower core material 3 is filled between the upper surface of the liquid-stopping material 4 in the used state and the uppermost part of the drainage hole 2a, and an upper filler layer 71 is formed on the liquid-stopping material 4 to cover the upper surface of the liquid-stopping material 4 from above. The manufacturing procedure for this case is shown in FIG.

[0070] An example of the manufacturing procedure for the reinforcing material 1 shown in Fig. 4-(a) will be briefly described with reference to Fig. 5-(a) to (h). Fig. 5-(a) shows the manufacturing state of the main body of the upper core material 2 shown in Fig. 6-(b), and Fig. 5-(b) shows the state in which drainage holes 2a have been formed on one of the faces (plate elements) of the upper core material 2. After the drainage holes 2a have been formed, the liquid-stopping material 4 is inserted from one of the end faces of the upper core material 2 and placed in a determined position so that its top face will be positioned below the drainage holes 2a when in use, as shown in Fig. 5-(c).

[0071] Here, as shown in Fig. 5-(d), a high-viscosity filler 7 is injected into the section from the top surface of the liquid-stopping material 4 in the used state to the drainage hole 2a, and is hardened to form an upper filler layer 71. After that, as shown in (e), the upper core material 2 is turned upside down, and an appropriate amount of a low-viscosity filler 5 or a filler 7 with a higher viscosity than the filler 5 is injected onto the top surface of the liquid-stopping material 4 in that state. Thereafter, as in the procedure of Fig. 3, the lower core material 3 is inserted onto the liquid-stopping material 4 in the upper core material 2 as shown in (f). At this time, the high-viscosity filler 7 hardens, or hardens while being mixed with the low-viscosity filler 5, to form a lower filler layer 72 as shown in Fig. 4-(b).

[0072] Thereafter, as shown in (g), additional low-viscosity filler 5 is injected, the lower core material 3 is embedded in the filler 5, and the filler 5 is allowed to harden in this state, completing the production of the reinforcing material 1 shown in Figure 4-(a) as shown in (h).

[0073] Fig. 6 shows the state of use in which the reinforcing material 1 is inserted inside a support post 6 supporting a handrail (copboard) 10. In the example shown here, the lower end section of the reinforcing material 1 is embedded and fixed in a structural body (body) 8 such as a reinforced concrete slab.

[0074] The lower end of the handrail 10 is placed on the upper end of the support 6, and is connected if necessary. The lower end of the support 6 abuts against the surface of the structure 8, or against the surface of the reinforcing material 1 exposed from the structure 8 and a protective cap 12 that covers the surface of the structure 8.

[0075] As shown in Figure 6-(a), the pillar 6 is connected to the reinforcing member 1 by screws 11 or the like that pass through the pillar 6 and the upper core material 2 of the reinforcing member 1 to ensure their integrity. Part of the vertical load received by the handrail 10 is transmitted to the reinforcing member 1 through the pillar 6 on which the handrail 10 is placed, and is transmitted to the structure 8 through the lower end of the reinforcing member 1. The other part of the vertical load is transmitted through the pillar 6 to the structure 8 with which the lower end of the pillar 6 comes into contact.

[0076] In the example shown in Figure 6, auxiliary posts 9 that support the handrail 10 together with the support post 6 are installed particularly below the outdoor side of the handrail 10 and are arranged on the outdoor side of the support post 6, and by connecting the auxiliary posts 9 to the support post 6 as shown in (b), the handrail 10 is prevented from tilting outward or downward from the structure 8. In this example, the handrail 10 is supported by the support posts 6 and the auxiliary posts 9 that are arranged in parallel in the outward direction of the structure 8, so that the lower end of the auxiliary post 9 is connected (joined) to the support post 6, but the handrail 10 may also be supported only by the support post 6 without using the auxiliary posts 9.

[0077] 6(b), the auxiliary pole 9 is made up of two members: a pole component 91 to which the outdoor side of the pole 6 is directly connected, and a cover material 92 that covers the connection between the pole 6 and the pole component 91. Here, the auxiliary pole 9 is made up by fitting together recesses 91b and protrusions 92a formed on the pole component 91 and the cover material 92, respectively, but the combination can be arbitrary.

[0078] In Figure 6, the pillar 6 and the pillar component 91 are connected by fitting the fitting portion 6a protruding on the outdoor side of the pillar 6 into the fitting portion 91a formed on the indoor side of the pillar component 91, but this connection method is also arbitrary.

[0079] Fig. 4-(b) shows an example in which a filler 7 having a higher viscosity than the low-viscosity filler 5 injected between the upper core material 2 and the lower core material 3 is filled under the underside of the liquid-stopping material 4 in the used state. In this example, as in the production example shown in Fig. 1, the lower end surface of the lower core material 3 during production comes into contact (adheres closely) with the upper surface of the liquid-stopping material 4, and the upper end surface of the lower core material 3 during use comes into adherence to the underside of the liquid-stopping material 4. Also, as in the examples of Figs. 1 and 4-(a), an internal filling material layer 51 is formed on the underside of the liquid-stopping material 4, so that the upper end surface of the lower core material 3 during use comes into adherence to the internal filling material layer 51.

[0080] In the examples of Figures 1 and 4-(a), during production, basically, a low-viscosity filling material 5 is injected onto the upper surface of the liquid-stopping material 4 as shown in Figure 3, and then the lower core material 3 is lowered. Depending on the length (dimension) or mass of the lower core material 3, the impact force of the lower core material 3 when it is lowered may cause the liquid-stopping material 4 to be lowered from its original position, and the lower core material 3 may not be positioned accurately, and may be inserted lower than its original position.

[0081] In contrast, in the example of Fig. 4-(b), during production, high-viscosity filler 7 is filled on the upper surface of the liquid-stopping material 4 prior to low-viscosity filler 5, so that the viscous resistance acting on the surface of the lower core material 3 can be increased when the lower core material 3 is lowered. As a result, the impact force when the lower core material 3 descends and contacts the upper surface of the liquid-stopping material 4 can be mitigated, and the possibility of the liquid-stopping material 4 being lowered can be reduced. The high-viscosity filler 7 hardens above the liquid-stopping material 4 during production, forming a lower filling material layer 72.

[0082] For this reason, the greater the thickness (length) of the lower filling material layer 72 formed on the liquid stop material 4 during production, the lower the possibility of the liquid stop material 4 descending, and the more accurate the positioning of the lower core material 3 becomes. Depending on the descending speed of the lower core material 3, the high viscosity filling material 7 may harden while remaining separate from the low viscosity filling material 5, but when the lower core material 3 descends, the filling material 7 may be mixed with at least a part of the filling material 5 near the lower layer. In FIG. 4-(b), for the sake of convenience, it is assumed that the filling material 7 and the filling material 5 harden while remaining separate, and a clear boundary line is shown between the lower filling material layer 72 and the filling material 5, but this boundary line may not actually appear. [Explanation of symbols]

[0083] 1... Reinforcement material, 2...Upper core material, 2a...Drainage hole, 3...Lower core material, 4... Liquid-stopping material, 5...(low viscosity) filler, 51...internal filler layer, 6: Support; 6a: Fitting; 7...(high viscosity) filler, 71...upper filler layer, 72...lower filler layer, 8...Structure, 9: auxiliary support; 91: support component; 91a: fitted portion; 91b: recess; 92: cover material; 92a: protrusion; 10...Handrail, 11...Screw, 12...Protective cap.

Claims

1. A reinforcing material for a handrail post comprising an upper core material having a hollow cross-sectional shape, and a lower core material having a solid cross-sectional shape which is inserted into the upper core material and which, when inserted into the upper core material, forms a gap between the entire circumferential surface and the entire inner circumferential surface of the upper core material, the upper core material and the lower core material being in a state where they are integrated together, the reinforcing material being for a handrail post which has a hollow cross-sectional shape, a liquid-stopping material having water-absorbency capable of absorbing a liquid having fluidity is inserted into the upper core material at a depth where an upper end surface of the lower core material is located when in use; the lower core material is inserted into the upper core material to a position where an upper end surface of the lower core material contacts the liquid-stopping material when in use, and a low-viscosity, non-alkaline filler that exhibits water resistance after hardening is filled between the lower core material and the interior of the upper core material, A reinforcement material for handrail supports, characterized in that the filling material is spread between the entire peripheral surface of the lower core material and the entire inner peripheral surface of the upper core material, and beneath the lower end surface of the lower core material when in use.

2. The reinforcement material for handrail supports as described in claim 1, characterized in that, when in use, the upper core material has a drainage hole at a position above the upper surface of the liquid-stopping material, which connects the inside and outside of the upper core material, and a filler having a higher viscosity than the low-viscosity filler injected between the upper core material and the lower core material is filled between the upper surface of the liquid-stopping material and below the top of the drainage hole, and an upper filler layer is formed on top of the liquid-stopping material.

3. A reinforcement material for handrail supports as described in claim 1 or claim 2, characterized in that a filler having a higher viscosity than the low-viscosity filler injected between the upper core material and the lower core material is filled under the underside of the liquid-stopping material when in use.

4. A method for producing a reinforcement material for a handrail support, comprising: an upper core material having a hollow cross-sectional shape; and a lower core material having a solid cross-sectional shape which is inserted into the upper core material and which, when inserted into the upper core material, forms a gap between the entire circumferential surface and the entire inner circumferential surface of the upper core material, the upper core material and the lower core material being in a united state, the method comprising the steps of: a step of inserting a water-absorbent liquid-stopping material capable of absorbing a fluid liquid into the upper core material at a depth where an upper end surface of the lower core material is located when the upper core material is in use, while the upper core material is in a state where the upper core material is in a state where the upper end surface of the lower core material is located when the upper core material is in use; a step of injecting a low-viscosity, non-alkaline filler material that exhibits water resistance after hardening into the inside of the upper core material until the upper end surface of the lower core material is buried, and inserting the lower core material into the upper core material until the lower end surface of the lower core material contacts the liquid-stopping material; A method for manufacturing a reinforcement material for handrail supports, characterized in that the reinforcement material is manufactured by spreading the low-viscosity filling material between the peripheral surface of the lower core material and the inner peripheral surface of the upper core material, and under the lower end surface of the lower core material when in use.

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