Exterior building material support structure

Abstract

At least one embodiment of the present disclosure provides an exterior building material support structure that ensures waterproofness. [Solution] An exterior building material support structure that supports exterior building materials separating the interior and exterior of a building comprises a support concrete and a rising portion installed on the support concrete and supporting the exterior building materials. The rising portion is formed of waterproof mortar and extends along a first direction on the support concrete. The exterior building material support structure further comprises a waterproof sealant that is installed between the support concrete and the rising portion such that the lower and upper surfaces of the waterproof mortar are in contact and extends along the first direction.

Description

Technical Field

[0001] The present disclosure relates to a support structure for building exterior materials.

Background Art

[0002] Conventionally, a support structure for a balcony sash is known. The support structure includes slab concrete, a riser rising from the slab concrete, and a balcony sash installed on the riser. The riser has a waterproof function to prevent water such as rain from entering the indoor side of the balcony sash. Therefore, if the riser is integral with the slab concrete, high waterproof performance is expected.

[0003] However, from the perspective of shortening the construction period of a building, it is preferable that the riser is separate from the slab concrete. If the riser is integrated with the slab concrete, it is necessary to use a floating formwork for forming the riser, and undulations occur on the riser after casting. As a result, the construction period is prolonged by the amount of work required for repairing the undulated riser.

[0004] For example, when constructing a high-rise condominium, the work of installing the main structures such as columns, beams, floors, and balconies is repeated periodically for each floor. If the riser is integrated with the slab concrete, the man-hours (cycle days) required per floor become longer due to the above reasons. The influence of such an increase in man-hours becomes greater as the number of floors of the high-rise condominium increases. Therefore, as in Patent Document 1, it is preferable that the slab concrete and the riser are configured separately.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, if the slab concrete and the rising section are constructed as separate components, rainwater and other water can easily seep between them, raising concerns about water leakage into the building. In other words, there is a risk that the rising section will not be able to perform the waterproofing function it is supposed to.

[0007] The purpose of this disclosure is to provide an exterior building material support structure that ensures waterproofing. [Means for solving the problem]

[0008] 1) An exterior building material support structure according to at least one embodiment of the present disclosure is: An exterior building material support structure that supports exterior building materials that separate the interior and exterior of a building, Supporting concrete and A rising portion which is installed on the aforementioned supporting concrete and supports the aforementioned exterior building material, Equipped with, The aforementioned rising portion is formed of waterproof mortar.

[0009] According to the configuration described in 1) above, since the rising portion is formed with waterproof mortar, the waterproofing of the exterior building material support structure is improved, and water can be prevented from entering the building.

[0010] 2) In some embodiments, the exterior building material support structure described in 1) above, The aforementioned rising portion extends along the first direction on the supporting concrete, The system further comprises a waterproof sealing material installed between the supporting concrete and the rising portion, and extending along the first direction.

[0011] According to the configuration described in 2) above, the waterproofing of the exterior building material support structure is further improved by the placement of a waterproof sealing material.

[0012] 3) In some embodiments, the exterior building material support structure described in 2) above, Defining the horizontal direction perpendicular to the first direction as the second direction, The waterproof sealing material is disposed closer to the center side of the upright upper portion than both ends of the upright upper portion in the second direction.

[0013] According to the configuration of 3) above, since it is possible to prevent the waterproof sealing material from being exposed to outside air or water, it is possible to suppress the aging deterioration of the waterproof sealing material. As a result, the waterproof property of the exterior building material support structure is exhibited over a long period.

[0014] 4) In some embodiments, there is provided an exterior building material support structure according to 3) above, The center of the waterproof sealing material in the second direction is located within the central divided region among three divided regions obtained by dividing the region where the upright upper portion is disposed into three equal parts along the second direction.

[0015] According to the configuration of 4) above, since the waterproof sealing material is disposed at a position farther from both ends of the upright upper portion, it is possible to more reliably prevent the waterproof sealing material from being exposed to outside air or water.

[0016] 5) In some embodiments, there is provided an exterior building material support structure according to any one of 2) to 4) above, Defining the dimension of the waterproof sealing material in a second direction, which is a horizontal direction orthogonal to the first direction, as A [mm], and the dimension of the waterproof sealing material in a height direction orthogonal to each of the first direction and the second direction as h [mm], The waterproof sealing material is configured to satisfy the following formulas (1), (2), and (3) 5 ≦ A ≦ 30 ··· Formula (1) 1 ≦ h ≦ 10 ··· Formula (2) 0.05 ≦ h / A ≦ 0.5 ··· Formula (3) and is configured to satisfy the above.

[0017] According to the configuration of 5) above, it is possible to maintain the waterproof property of the waterproof sealing material and to exhibit good adhesion between the waterproof sealing material and the upright upper portion.

[0018] 6) In some embodiments, there is provided an exterior building material support structure according to any one of 2) to 5) above, Define the dimension of the waterproof sealant in the second direction, which is a horizontal direction perpendicular to the first direction, as A, and the dimension of the upright portion in the second direction as B. The following formula (4) 1 / 20 ≦ A / B ≦ 1 / 4 ··· Formula (4) It is configured to satisfy this.

[0019] According to the configuration of 6) above, good waterproof performance is exhibited, and good adhesion between the waterproof sealant and the upright portion is exhibited.

[0020] 7) In some embodiments, it is an exterior building material support structure described in any one of 2) to 6) above, Define the unit volume mass of the upright portion as ρm (t / m 3 ), and the unit volume mass of the waterproof sealant as ρs (t / m 3 ), and The following formulas (5), (6), (7) 1.5 ≦ ρm ≦ 2.5 ··· Formula (5) 0.9 ≦ ρs ≦ 1.3 ··· Formula (6) 1.0 < ρm / ρs ≦ 3.0 ··· Formula (7) It is configured to satisfy this.

[0021] According to the configuration of 7) above, when lateral sway such as an earthquake occurs, the followability between the upright portion and the waterproof sealant is good, and the waterproof performance is enhanced because a gap is less likely to occur between the two.

[0022] 8) In some embodiments, it is an exterior building material support structure described in any one of 2) to 7) above, The waterproof sealant extends along the first direction and includes a first portion installed between the support concrete and the upright portion, and a second portion that rises from the end of the first portion in the first direction and extends along the side surface of an adjacent structure. includes.

[0023] According to the configuration described in 8) above, the first part waterproofs the space between the supporting concrete and the rising section, and the second part waterproofs the space between the rising section and the structure adjacent to the rising section. Therefore, even if water accumulates on the supporting concrete on the outside, it is possible to effectively prevent water from entering the building.

[0024] 9) In some embodiments, the exterior building material support structure described in any of 1) to 8) above, The system further includes a waterproof seal installed between the aforementioned rising portion and the aforementioned exterior building material, and positioned facing the outside.

[0025] According to the configuration described in 9) above, the waterproof seal prevents water from entering between the exterior building material and the rising section, thus further improving the waterproofing of the exterior building material support structure.

[0026] 10) In some embodiments, the exterior building material support structure described in any of 1) to 9) above, The aforementioned rising portion has an outdoor side surface that rises from the supporting concrete and is oriented toward the outdoors. The device further comprises a first waterproof membrane including a first vertical attachment portion that is attached to the outdoor side surface.

[0027] According to the configuration described in 10) above, the first waterproof membrane prevents water from entering between the supporting concrete and the rising section, thereby further improving the waterproofing performance of the exterior building material support structure.

[0028] 11) In some embodiments, the exterior building material support structure described in any of 1) to 9) above, The system further comprises a second waterproof membrane consisting of a second horizontal attachment portion that is attached to the upper surface of the support concrete between the support concrete and the rising portion, and a second vertical attachment portion that rises from the second horizontal attachment portion and extends vertically within the rising portion.

[0029] According to the configuration described in 11) above, the second waterproof membrane prevents water that has entered between the supporting concrete and the rising section from reaching the interior, thereby further improving the waterproofing performance of the exterior building material support structure.

[0030] 12) In some embodiments, the exterior building material support structure described in any of 1) to 9) above, The aforementioned rising portion has an outdoor side surface that rises from the supporting concrete and is oriented toward the outdoors. A first waterproof membrane including a first vertical attachment portion to be attached to the outdoor side surface, A second waterproof membrane comprising a second horizontal attachment portion that is attached to the upper surface of the support concrete between the support concrete and the rising portion, and a second vertical attachment portion that rises from the second horizontal attachment portion and extends vertically within the interior of the rising portion, To further prepare.

[0031] According to the configuration described in 12) above, by using the first waterproof membrane and the second waterproof membrane in combination, it is possible to more reliably prevent water that has entered between the supporting concrete and the rising section from reaching the interior of the building. Therefore, the waterproofing performance of the exterior building material support structure is further improved.

[0032] 13) In some embodiments, the exterior building material support structure described in 11) or 12) above, The aforementioned rising portion extends along the first direction on the supporting concrete, The waterproof sealing material extending along the first direction is installed between the supporting concrete and the rising portion, The second waterproof membrane is located on the outdoor side of the waterproof sealant.

[0033] According to the configuration described in 13) above, the second waterproof membrane prevents water that has entered between the supporting concrete and the rising section from reaching the waterproof sealant, thereby suppressing the deterioration of the waterproof sealant over time.

[0034] 14) In some embodiments, the exterior building material support structure described in 12) above, The first waterproof membrane is made of a different material than the second waterproof membrane.

[0035] The required performance characteristics for the first and second waterproofing membranes may differ, in addition to waterproofing. The first waterproofing membrane is exposed to sunlight and rainfall, so high waterproofing and weather resistance may be required. The second waterproofing membrane, on the other hand, may require high adhesion to the waterproofing mortar on the vertical surface and durability. In this regard, according to the configuration described in 14) above, the material of the first waterproof membrane and the material of the second waterproof membrane are selected considering the required performance, thereby effectively achieving both high waterproofness of the exterior building material support structure and suppression of deterioration of the exterior building material support structure over time.

[0036] 15) In some embodiments, the exterior building material support structure described in 14) above, The first waterproofing membrane is a urethane-based coating, The second waterproofing membrane is a polymer cement-based coating.

[0037] According to the configuration described in 15) above, by using a urethane-based coating for the first waterproofing membrane and a polymer cement-based coating for the second waterproofing membrane, the effects described in 14) above can be enjoyed more effectively. [Effects of the Invention]

[0038] According to this disclosure, it is possible to provide an exterior building material support structure that ensures waterproofing. [Brief explanation of the drawing]

[0039] [Figure 1] A schematic cross-sectional view of a support structure for exterior building materials (first embodiment). [Figure 2] This is a magnified section of Figure 1. [Figure 3] This is a schematic cross-sectional view of the exterior building material support structure as seen from a second direction. [Figure 4] A schematic cross-sectional view of the exterior building material support structure (second embodiment). [Modes for carrying out the invention]

[0040] Hereinafter, several embodiments of this disclosure will be described with reference to the attached drawings. However, the dimensions, materials, shapes, relative arrangements, etc., of the components described or shown in the drawings as embodiments are not intended to limit the scope of this disclosure, but are merely illustrative examples. For example, expressions describing relative or absolute arrangements such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" should not only strictly describe such arrangements, but also describe states of relative displacement with tolerances or angles or distances that allow for the same function to be achieved. For example, expressions such as "identical," "equal," and "homogeneous" that describe things being in an equal state not only describe a state of being strictly equal, but also describe a state in which there is a tolerance or a difference that is sufficient to achieve the same function. For example, expressions describing shapes such as squares or cylinders shall not only represent geometrically precise shapes such as squares or cylinders, but also shapes that include protrusions, chamfers, etc., to the extent that the same effect can be achieved. On the other hand, expressions such as "possessing," "including," or "having" one component are not exclusive expressions that exclude the existence of other components. Note that similar configurations may be denoted by the same reference numerals and their explanations may be omitted.

[0041] Figure 1 is a schematic diagram of the exterior building material support structure 1 according to the first embodiment. The exterior building material support structure 1 supports exterior building material 2 that separates the interior and exterior of a building 9, which may be, for example, a high-rise apartment building. In this embodiment, the exterior building material 2 is a balcony sash. In Figure 1, the left side of the exterior building material 2 is the exterior side of the building 9 and the right side is the interior side. Hereinafter, the exterior building material support structure 1 may be abbreviated as "support structure 1".

[0042] The support structure 1 comprises a support concrete 3 and a rising section 4 that rises from the support concrete 3. The support concrete 3 may be slab concrete or beam concrete. The rising section 4, installed on the support concrete 3, extends in a first direction along the horizontal direction (the front-to-back direction in Figure 1) and supports the exterior building material 2. The rising section 4 includes an outdoor side surface 41a, which is oriented towards the outdoors, and the outdoor side surface 41a rises from the support concrete 3. The rising section 4 also includes an indoor side surface 41b, which is oriented towards the indoors, and the indoor side surface 41b rises from the support concrete 3. The indoor side surface 41b of the rising section 4 exemplified in Figure 1 is oriented to connect with the indoor side surface 2b of the exterior building material 2.

[0043] In this embodiment, the rising portion 4 is formed of mortar containing a waterproofing agent (i.e., waterproof mortar). This waterproofing agent is a cement-modifying admixture-type waterproofing agent that imparts water repellency to the mortar. The ratio of the waterproofing agent to the mortar is, for example, 1% or more and 10% or less by weight, preferably 2% or more and 6% or less. According to the inventor's knowledge, if the ratio is less than 1%, the waterproofing properties of the mortar decrease, and if it exceeds 10%, the strength of the mortar decreases.

[0044] The waterproof mortar is formulated to have a permeability ratio of 70% or less in the permeability test of mortar without additives. This enhances the waterproofing performance of the waterproof mortar. The permeability test is conducted in accordance with the "Test Method for Building Cement Waterproofing Agents" specified in JIS-A-1404 (2015), and the water pressure for the permeability test is 3.0 × 10⁻⁶. 5 The water pressure is applied in Pa for 1 hour.

[0045] The aforementioned waterproofing agents include inorganic and organic types. Inorganic types include calcium chloride-based, sodium silicate-based, and silica-based agents, while organic types include higher fatty acid-based agents such as higher fatty acids and higher fatty acid salts.

[0046] The support structure 1 illustrated in Figure 1 further comprises a waterproof sealant 5 installed between the support concrete 3 and the rising portion 4. The waterproof sealant 5 includes an elastic, plastic, or viscous material having waterproofing properties. In this example, the waterproof sealant 5 is a butyl sealant extending in the first direction. Here, the horizontal direction perpendicular to the first direction is defined as the second direction. The second direction corresponds to the left-right direction in Figure 1, as well as the width direction of the waterproof sealant 5.

[0047] As shown in Figure 2, the waterproof sealant 5 is positioned towards the center of the rising portion 4 in the second direction, rather than towards both ends 45 of the rising portion 4. Furthermore, of the three divided regions R1, R2, and R3 obtained by dividing the area in the second direction where the rising portion 4 is located into three equal parts, the center 5M of the waterproof sealant 5 in the second direction is located in the central divided region R2. In the example in Figure 2, the entire portion of the waterproof sealant 5 is located in divided region R2, but instead, a portion of the waterproof sealant 5 may be located in divided regions R1 and R3.

[0048] The dimension (maximum dimension) of the waterproof sealant 5 in the second direction is defined as A [mm], and the dimension (maximum dimension) of the waterproof sealant 5 in the height direction perpendicular to the first and second directions is defined as h [mm]. In this case, the waterproof sealant 5 is configured to satisfy all of the following equations (1), (2), and (3). 5≦A≦30...Equation (1) 1≦h≦10...Equation (2) 0.05≦h / A≦0.5...Equation (3)

[0049] Formula (1) means that A is 5 mm or more and 30 mm or less, but it is even more preferable that A is 10 mm or more and 20 mm or less. Formula (2) means that h is 1 mm or more and 10 mm or less, but it is even more preferable that h is 2 mm or more and 7 mm or less. Formula (3) means that h / A is 0.05 or more and 0.5 or less, but it is even more preferable that h / A is 0.1 or more and 0.3 or less. With the above configuration, the waterproofing properties of the waterproofing sealant 5 can be maintained and good adhesion between the waterproofing sealant 5 and the rising portion 4 can be achieved.

[0050] Furthermore, defining the dimension (maximum dimension) of the rising portion 4 in the second direction as B, the exterior building material support structure 1 is configured such that the following equation (4) holds true. 1 / 20≦A / B≦1 / 4...Equation (4)

[0051] Equation (4) means that A / B is between 1 / 20 and 1 / 4, but it is even more preferable that A / B is between 1 / 15 and 1 / 5. With the above configuration, good waterproofing performance is achieved, as well as good adhesion between the waterproof sealing material 5 and the rising portion 4.

[0052] Furthermore, the unit volume mass of the rising section 4 (i.e., waterproof mortar) is ρm(t / m 3 ), the unit volume mass of the waterproof sealant 5 is ρs(t / m 3 ) is defined as follows, and the exterior building material support structure 1 is configured such that all of the following equations (5), (6), and (7) are satisfied. 1.5≦ρm≦2.5...Equation (5) 0.9≦ρs≦1.3...Equation (6) 1.0<ρm / ρs≦3.0...Equation (7)

[0053] Equation (7) means that ρm / ρs is greater than 1.0 and 3.0 or less, but it is even more preferable that ρm / ρs is greater than 1.1 and 2.8 or less. According to the configuration in which equations (5), (6), and (7) are satisfied, the ability of the rising portion 4 and the waterproof sealant 5 to follow the lateral shaking such as earthquakes is good, and the waterproof performance is improved as gaps are less likely to occur between the two.

[0054] Figure 3 is a schematic cross-sectional view of the exterior building material support structure 1 as seen from the second direction. In Figure 3, a cross-section of the support structure 1 cut at the position of the waterproof sealant 5 is shown. In Figure 3, the first direction corresponds to the left-right direction, the second direction corresponds to the front-to-back direction of the paper, and the height direction corresponds to the up-and-down direction. As shown in Figure 3, the support structure 1 is adjacent to the structure 200 in the second direction. The structure 200 is not particularly limited and may be, for example, the exterior wall or columns of the building 9.

[0055] As shown in Figure 3, the waterproof sealant 5 includes a first portion 51 extending along a first direction and a second portion 53 rising from the end 52 of the first portion 51 in a second direction. The second portion 53 extends along the height direction.

[0056] The first part 51 is installed between the supporting concrete 3 and the rising section 4. The end 52 of the first part 51 is provided so as to be in contact with the side surface 202 of the structure 200 adjacent to the exterior building material support structure 1.

[0057] The second part 53 extends along the side surface 202 of the structure 200 adjacent to the exterior building material support structure 1. In the embodiment shown in Figure 2, the second portion 53 rises from both ends 52 of the first portion 51. In other embodiments, the second portion 53 rises from one end 52 of the first portion 51.

[0058] The height h' of the second part 53 preferably satisfies the condition 0.25 ≤ h' / H ≤ 1, where H is the height of the rising part 4. By satisfying the above condition, even if water accumulates outside the building 9, water intrusion into the interior can be effectively prevented.

[0059] Returning to Figure 1, the support structure 1 further includes a waterproof seal 19 installed between the rising portion 4 and the exterior building material 2, and positioned facing outwards. The waterproof seal 19 extends in the first direction. The waterproof seal 19 includes an elastic, plastic, or viscous material having waterproof properties. The waterproof seal 19 is a urethane seal or a silicone seal.

[0060] The upper end of the outdoor side surface 41a of the rising section 4 is located lower than the lower surface 2c of the exterior building material 2. The rising section 4 further has a surface 41e located on the indoor side of the outdoor side surface 41a, and a surface 41f connecting the upper end of the outdoor side surface 41a and the lower end of surface 41e.

[0061] The waterproof seal 19 has a side surface 19a oriented toward the outdoors, a side surface 19b located more indoors than side surface 19a, and a surface 19c connecting the lower end of side surface 19a and the lower end of side surface 19b. Side surface 19a of the waterproof seal 19 is oriented to be continuous with the outdoor side surface 41a of the rising section 4. Also, side surface 19a of the waterproof seal 19 is oriented to be continuous with the outdoor side surface 2a of the exterior building material 2. Side surface 19b of the waterproof seal 19 faces surface 41e of the rising section 4. Surface surface 19c of the waterproof seal 19 faces surface 41f of the rising section 4.

[0062] In some embodiments, as shown in Figure 1, the lower end of side surface 19a of the waterproof seal 19 is located below the lower end of side surface 19b. That is, the surface 19c of the waterproof seal 19 slopes downward from side surface 19b toward side surface 19a.

[0063] As shown in Figure 1, the support structure 1 further comprises a first waterproof membrane 10 attached to the support concrete 3 and the rising portion 4. The first waterproof membrane 10 is a polyurethane-based seal extending in a first direction. The first waterproof membrane 10 consists of a first horizontal attachment portion 11 and a first vertical attachment portion 12.

[0064] The first horizontal attachment section 11 is attached to the upper surface 31 of the support concrete 3. The first vertical attachment section 12 rises from the first horizontal attachment section 11 and is attached to the outdoor side surface 41a of the vertical section 4. However, the first waterproof membrane 10 does not necessarily include the first horizontal attachment section 11. Also, instead of being an adhesive-type seal, the first waterproof membrane 10 may be formed by the solidification of a liquid waterproofing agent.

[0065] In some embodiments, as shown in Figure 1, the upper end of the first vertical attachment portion 12 is attached at a height position relative to the lower surface 2c of the exterior building material 2. In other embodiments, the upper end of the first vertical attachment portion 12 may be attached to the outdoor side surface 2a of the exterior building material 2 at a height above the lower surface 2c of the exterior building material 2.

[0066] In some embodiments, as shown in Figure 1, the first vertical attachment portion 12 is attached to the outdoor side surface 41a of the vertical portion 4 and the side surface 19a of the waterproof seal 19.

[0067] Figure 4 is a schematic diagram of the exterior building material support structure 1 according to the second embodiment. In Figure 4, the same reference numerals are used for the same components as in Figure 1. The support structure 1 further includes a second waterproof membrane 20 positioned on the outdoor side of the waterproof sealant 5. The second waterproof membrane 20 consists of a second horizontal attachment portion 21 and a second vertical attachment portion 22. The second horizontal attachment portion 21 is attached to the upper surface 31 of the support concrete 3 between the support concrete 3 and the vertical portion 4. In addition, a part of the second horizontal attachment portion 21 is positioned on the outdoor side of the vertical portion 4 and is interposed between the first horizontal attachment portion 11 and the support concrete 3. In other words, the first horizontal attachment portion 11 according to the second embodiment is attached to the upper surface 31 of the support concrete 3 via the second horizontal attachment portion 21. The second vertical attachment portion 22 rises from the second horizontal attachment portion 21 and extends vertically within the vertical portion 4. The second waterproof membrane 20 may be formed by the solidification of a liquid waterproofing agent, rather than being an adhesive-type seal.

[0068] In some embodiments, as shown in Figure 4, the rising portion 4 includes a main body 42 having an indoor side surface 42b (41b) oriented toward the interior, and an additional portion 43 having an outdoor side surface 43a (41a) oriented toward the exterior. The main body 42 further has a side surface 42a located on the outdoor side of the indoor side surface 42b (41b). The additional portion 43 further has a side surface 43b located on the indoor side of the outdoor side surface 43a (41a), and a surface 43f (41f) connecting the upper end of the outdoor side surface 43a (41a) and the upper end of the side surface 43b. The surface 43f of the additional portion 43 is located below the lower surface 2c of the exterior building material 2. In the embodiment shown in Figure 4, the second vertical attachment portion 22 is located between the side surface 42a of the main body portion 42 and the side surface 43b of the additional portion 43. In the embodiment illustrated in Figure 4, the second vertical attachment portion 22 is located between the side surface 42a of the main body portion 42 and the side surface 43b of the additional portion 43 and the side surface 19b of the waterproof seal 19.

[0069] In some embodiments, the first waterproof membrane 10 and the second waterproof membrane 20 are made of different materials. The first waterproof membrane 10 and the second waterproof membrane 20 are each made of materials that have different properties other than waterproofing. The first waterproofing membrane 10 is exposed to sunlight and rainfall, so high waterproofing and weather resistance are required. Therefore, the first waterproofing membrane 10 is preferably a urethane-based coating. The second waterproofing membrane 20 is required to have high adhesion and durability to the waterproofing mortar of the rising section 4. Therefore, it is preferable that the second waterproofing membrane 20 be, for example, a polymer cement-based coating.

[0070] The installation procedure for the support structure 1 according to the second embodiment is outlined below. After the support concrete 3 is laid, the waterproof sealant 5 is installed. Then, the main body 42 of the rising section 4 is formed by molding. After that, the second waterproof membrane 20 is installed. At this time, the second rising attachment portion 22 of the second waterproof membrane 20 is attached to the outdoor side surface 42a of the main body 42. Subsequently, the additional portion 43 of the rising section 4 is molded. The additional portion 43 becomes integrated with the main body 42, and at least a part of the second rising attachment portion 22 is positioned inside the rising section 4. After that, the first rising attachment portion 12 of the first waterproof membrane 10 is attached to the outdoor side surface 43a of the additional portion 43 (i.e., the outdoor side surface 41a of the rising section 4). The additional portion 43 is lower than the main body 42, and a waterproof sealant 19 is placed between the additional portion 43 and the exterior building material 2.

[0071] As explained above, the rising portion 4 of the exterior building material support structure 1 is formed of waterproof mortar. This improves the waterproofing of the exterior building material support structure 1 and prevents water from entering the interior. Furthermore, the waterproofing of the exterior building material support structure 1 is further improved by the provision of waterproof sealant 5.

[0072] Furthermore, if the waterproof sealant 5 is positioned towards the center of the rising section 4 rather than at both ends 45 of the rising section 4 in the second direction, it is possible to prevent the waterproof sealant 5 from being exposed to outside air or water, thereby suppressing deterioration of the waterproof sealant 5 over time. As a result, the waterproofing performance of the exterior building material support structure 1 is maintained over a long period of time. In addition, by positioning the center 5M of the waterproof sealant 5 in the central section R2, the waterproof sealant 5 is positioned further away from both ends 45 of the rising section 4, thereby more reliably preventing the waterproof sealant 5 from being exposed to outside air or water.

[0073] Furthermore, in the configuration in which the first waterproof membrane 10 is provided, the first waterproof membrane 10 prevents water from entering between the supporting concrete 3 and the rising portion 4, thereby further improving the waterproofing performance of the exterior building material support structure 1.

[0074] Furthermore, in the configuration in which the second waterproof membrane 20 is provided, the second waterproof membrane 20 prevents water that has entered between the supporting concrete 3 and the rising portion 4 from reaching the interior of the building, thus further improving the waterproofing performance of the exterior building material support structure 1.

[0075] Furthermore, because the second waterproof membrane 20 is located on the outdoor side of the waterproof sealant 5, the second waterproof membrane 20 prevents water that has entered between the supporting concrete 3 and the rising section 4 from reaching the waterproof sealant 5, thereby suppressing the deterioration of the waterproof sealant 5 over time.

[0076] The embodiments shown in Figures 1 to 4 are merely examples of the present disclosure. From a value engineering (VE) perspective, it is preferable to simplify the configuration of the support structure 1 as much as possible, within the range in which the support structure 1 can exhibit the required waterproofing performance. For example, the first waterproof membrane 10 and the second waterproof membrane 20 are not essential components of the exterior building material support structure 1, and these components may be omitted as appropriate. [Explanation of symbols]

[0077] 1:Support structure (exterior building material support structure) 2:Exterior building materials 3: Supporting concrete 4: Upright section 5: Waterproof sealant 5M: Center 9: Building 10: 1st waterproofing membrane 11: First horizontal attachment section 12: First rising attachment section 19: Waterproof seal 20:Second waterproofing membrane 21: Second horizontal attachment section 22: Second rising attachment section 31:Top surface 41a: Outdoor side 42: Main body 42a: Side 43: Additional section 45: Both ends 51: 1st part 52: End 53:Second part R1: Partitioned area R2: Partitioned area R3: Partitioned area

Claims

1. An exterior building material support structure that supports exterior building materials that separate the interior and exterior of a building, Supporting concrete and A rising portion which is installed on the aforementioned supporting concrete and supports the aforementioned exterior building material, Equipped with, The aforementioned rising portion is formed of waterproof mortar. The aforementioned rising portion extends along the first direction on the supporting concrete, The system further includes a waterproof sealing material that is installed between the supporting concrete and the rising portion such that the lower and upper surfaces of the waterproof mortar are in contact, and which extends along the first direction. Exterior building material support structure.

2. The horizontal direction perpendicular to the first direction is defined as the second direction, The waterproof sealing material is positioned closer to the center of the rising portion than to both ends of the rising portion in the second direction. The exterior building material support structure according to claim 1.

3. The center of the waterproof sealing material in the second direction is located within the central of three divided regions obtained by dividing the area where the rising portion is located along the second direction into three equal parts. The exterior building material support structure according to claim 2.

4. The dimension of the waterproof sealant in the second direction, which is a horizontal direction perpendicular to the first direction, is defined as A [mm], and the dimension of the waterproof sealant in the height direction, which is perpendicular to both the first and second directions, is defined as h [mm]. The aforementioned waterproof sealing material is expressed by the following formulas (1), (2), and (3) 5≦A≦30...Formula (1) 1≦h≦10...Formula (2) 0.05≦h / A≦0.5...Formula (3) Configured to satisfy An exterior building material support structure according to any one of claims 1 to 3.

5. Let A be the dimension of the waterproof sealant in the second direction, which is a horizontal direction perpendicular to the first direction, and B be the dimension of the rising portion in the second direction. The following equation (4) 1 / 20≦A / B≦1 / 4...Formula (4) It is configured to satisfy the following condition. An exterior building material support structure according to any one of claims 1 to 3.

6. The unit volume mass of the aforementioned riser is ρm(t / m ３ ), the unit volume mass of the waterproof sealing material is ρs(t / m ３ ) defined as, The following equations (5), (6), (7) 1.5≦ρm≦2.5 ...Formula (5) 0.9≦ρs≦1.3 ...Formula (6) 1.0<ρm / ρs≦3.0...Formula (7) It is configured to satisfy the following condition. An exterior building material support structure according to any one of claims 1 to 3.

7. The aforementioned waterproof sealant is A first portion that extends along the first direction and is installed between the supporting concrete and the rising portion, A second portion rises from the end of the first portion in the first direction and extends along the side surface of an adjacent structure, including An exterior building material support structure according to any one of claims 1 to 3.

8. The system further comprises a waterproof seal installed between the aforementioned rising portion and the aforementioned exterior building material, and positioned facing the outside. An exterior building material support structure according to any one of claims 1 to 3.

9. The aforementioned rising portion has an outdoor side surface that rises from the supporting concrete and is oriented toward the outdoors. The first waterproof membrane, which includes a first vertical attachment portion to be attached to the aforementioned outdoor side surface, is further provided. An exterior building material support structure according to any one of claims 1 to 3.

10. The waterproof membrane further comprises a second horizontal attachment portion that is attached to the upper surface of the support concrete between the support concrete and the rising portion, and a second vertical attachment portion that rises from the second horizontal attachment portion and extends vertically within the rising portion. An exterior building material support structure according to any one of claims 1 to 3.

11. The aforementioned rising portion has an outdoor side surface that rises from the supporting concrete and is oriented toward the outdoors. A first waterproof membrane including a first vertical attachment portion to be attached to the outdoor side surface, A second waterproof membrane comprising a second horizontal attachment portion that is attached to the upper surface of the support concrete between the support concrete and the rising portion, and a second vertical attachment portion that rises from the second horizontal attachment portion and extends vertically within the interior of the rising portion, To further enhance An exterior building material support structure according to any one of claims 1 to 3.

12. The aforementioned rising portion extends along the first direction on the supporting concrete, The waterproof sealing material extending in the first direction is installed between the supporting concrete and the rising portion, The second waterproof membrane is located on the outdoor side of the waterproof sealant. The exterior building material support structure according to claim 10.

13. The first waterproof membrane is made of a different material than the second waterproof membrane. The exterior building material support structure according to claim 11.

14. The first waterproofing membrane is a urethane-based coating, The second waterproofing membrane is a polymer cement-based coating. The exterior building material support structure according to claim 13.

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