JP4888278B2 - Base ant structure - Google Patents
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- JP4888278B2 JP4888278B2 JP2007220075A JP2007220075A JP4888278B2 JP 4888278 B2 JP4888278 B2 JP 4888278B2 JP 2007220075 A JP2007220075 A JP 2007220075A JP 2007220075 A JP2007220075 A JP 2007220075A JP 4888278 B2 JP4888278 B2 JP 4888278B2
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Description
この発明は、布基礎と土間コンクリートを備えた基礎の防蟻構造に関する。 The present invention relates to a ant-proof structure for a foundation provided with a cloth foundation and soil concrete.
住宅の基礎構造としては、布基礎によって囲まれた床下の土間部分に土間コンクリートを施工したものが一般的に知られている。特に近年では、住宅の高気密化、高断熱化に伴い、布基礎の立上り部や土間コンクリートに断熱材を張り付けることで、床下空間からの放熱を抑えて断熱性を高めるようにした構造のものが広く普及している。 As a basic structure of a house, a structure in which soil concrete is constructed in a soil portion under a floor surrounded by a fabric foundation is generally known. In recent years, in particular, with the increase in airtightness and heat insulation of houses, heat insulation is applied to the rising parts of cloth foundations and soil concrete to suppress heat dissipation from the underfloor space and improve heat insulation. Things are widespread.
このような基礎構造においては、土間コンクリートの経時的な乾燥に伴う収縮によって、布基礎の立上り部と土間コンクリートの端部との接合部分に隙間（クラック）が生じると、このクラックを伝ってシロアリが侵入して、土台や柱等の木質部分や断熱材に食害を与えるといった問題がある。 In such a foundation structure, if a gap (crack) is created at the joint between the rising edge of the fabric foundation and the edge of the soil concrete due to shrinkage accompanying the drying of the soil concrete over time, this termite is transmitted along this crack. Invades and damages wooden parts such as foundations and pillars and heat insulation.
そこで、防蟻対策として、図５に示すように、布基礎５０の立上り部５１と土間コンクリート５２の端部との接合部分に対応させて、土間コンクリート５２の上面に防蟻剤５３を充填することで、クラックからのシロアリの侵入を防止することが行われている（例えば、特許文献１参照）。 Therefore, as a countermeasure against ant, as shown in FIG. 5, the ant-repellent agent 53 is filled on the upper surface of the soil concrete 52 so as to correspond to the joint portion between the rising portion 51 of the fabric foundation 50 and the end of the soil concrete 52. Thus, prevention of termite intrusion from the crack is performed (for example, see Patent Document 1).
しかしながら、上記の防蟻対策では、土間コンクリート５２の上面において防蟻剤５３が断熱材５４ａ、５４ｂによって覆われた状態となっているので、防蟻剤５３の充填作業を待ってから断熱材５４ａ、５４ｂを施工する必要があり、施工性が悪いといった不具合があった。しかも、防蟻剤５３は、時間が経つにつれて防蟻効果が消失するので、定期的に新しいものと交換する必要があるが、この交換に際して、上記のように防蟻剤５３が断熱材５４ａ、５４ｂによって覆われていると、断熱材５４ａ、５４ｂを一旦取り外して防蟻剤５３を交換した後、再び断熱材５４ａ、５４ｂを取り付けるといった煩雑な作業を強いられ、メンテナンス性も悪かった。 However, in the above ant protection measures, since the ant protection agent 53 is covered with the heat insulating materials 54a and 54b on the upper surface of the soil concrete 52, the insulation material 54a waits for the filling work of the ant protection agent 53. , 54b had to be constructed, and there were problems such as poor workability. Moreover, since the ant-repellent agent 53 loses its ant-repellent effect as time passes, it is necessary to periodically replace it with a new one. If it was covered with 54b, the heat insulating materials 54a and 54b were once removed, the ant-proofing agent 53 was replaced, and then the heat insulating materials 54a and 54b were attached again, and maintenance was poor.
そこで、この発明は、上記の問題点を解消して、良好な防蟻性能を発揮することができ、しかも施工性及びメンテナンス性に優れた基礎の防蟻構造の提供を目的とする。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a basic ant-proof structure that can solve the above-mentioned problems, exhibit good ant-proofing performance, and is excellent in workability and maintainability.
上記課題を解決するため、この発明の基礎の防蟻構造は、布基礎１と、この布基礎１によって囲まれた床下の土壌２０を覆うように施工した土間コンクリート２とを備え、布基礎１の立上り部３の内側面と土間コンクリート２の端部上面とに跨って断熱材５ａ、５ｂを設けた基礎において、前記土間コンクリート２の端部に、前記土間コンクリート２の収縮を規制して、前記布基礎１の立上り部３と前記土間コンクリート２の端部との接合部分におけるクラックの発生を抑制する配筋１１を埋設するとともに、前記土間コンクリート２の断熱材５ｂが設けられていない箇所に、防蟻処理を施したクラック誘発部位１５を設けたことを特徴とする。 In order to solve the above-mentioned problems, the ant-proof structure of the foundation of the present invention includes a cloth foundation 1 and a soil concrete 2 constructed so as to cover the soil 20 under the floor surrounded by the cloth foundation 1. In the foundation provided with the heat insulating materials 5a and 5b across the inner side surface of the rising portion 3 and the end upper surface of the soil concrete 2, the shrinkage of the soil concrete 2 is regulated at the end of the soil concrete 2; In the place where the reinforcement 11 which suppresses generation | occurrence | production of the crack in the junction part of the standup | rising part 3 of the said fabric foundation 1 and the edge part of the said soil concrete 2 is embedded, and the heat insulating material 5b of the said soil concrete 2 is not provided. Further, the present invention is characterized in that a crack-inducing portion 15 having been subjected to ant-proofing treatment is provided .
さらに、前記防蟻処理を施したクラック誘発部位１５は、前記土間コンクリート２の上面に形成した凹入溝１６に防蟻剤１７を充填してなる。 Furthermore, the crack induction part 15 which performed the said ant-proof process fills the recessed groove 16 formed in the upper surface of the said soil concrete 2 with the ant-proof agent 17.
この発明の基礎の防蟻構造においては、布基礎の立上り部と土間コンクリートの端部との接合部分におけるクラックの発生を抑制するとともに、土間コンクリートにおける断熱材が設けられていない箇所において、クラックの発生を誘発しながら防蟻処理を施すようにしている。すなわち、シロアリの侵入経路となるクラック発生箇所を、断熱材と干渉することのない位置に移動させて、その位置において防蟻処理を施しているので、良好な防蟻性能を発揮しながらも、断熱材の施工と防蟻処理とを互いに関係なく別々に行うことができ、従来のように防蟻処理を待ってから断熱材を施工するときと比べて、施工性の向上を図ることができる。 In the ant-proof structure of the foundation of the present invention, the occurrence of cracks at the joint portion between the rising portion of the fabric foundation and the end portion of the interstitial concrete is suppressed, and at the location where the heat insulating material in the interstitial concrete is not provided, An ant-repellent treatment is applied while inducing the occurrence. In other words, the crack occurrence point that becomes the intrusion route of termites is moved to a position where it does not interfere with the heat insulating material, and the ant-proofing treatment is performed at that position, so while exhibiting good ant-proofing performance, The construction of the heat insulating material and the ant proofing treatment can be performed independently of each other, and the workability can be improved as compared with the case where the heat insulating material is constructed after waiting for the ant proofing treatment as in the past. .
しかも、防蟻剤の防蟻効果が消失したときの防蟻剤の交換に際しても、断熱材を取り外したり、再び取り付けたりする必要がなく、メンテナンス性も向上することができる。 Moreover, it is not necessary to remove or reattach the heat insulating material when replacing the ant-proofing agent when the ant-proofing effect of the ant-proofing agent disappears, and the maintainability can be improved.
さらに、防蟻処理を施す位置を比較的自由に設定することができ、設計の自由度を高めることもできる。 Furthermore, the position where the ant-proofing treatment is performed can be set relatively freely, and the degree of freedom in design can be increased.
以下、この発明の実施形態について図面に基づいて詳細に説明する。この発明の一実施形態に係る基礎は、図１乃至図３に示すように、布基礎１と、この布基礎１によって囲まれた床下の土間部分に施工した土間コンクリート２とを備えている。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, a foundation according to an embodiment of the present invention includes a cloth foundation 1 and a soil concrete 2 constructed in a soil portion under the floor surrounded by the cloth foundation 1.
布基礎１は、フーチング部４と、このフーチング部４の上面略中央から立ち上がった立上り部３とから断面逆Ｔ字状に形成され、フーチング部４及び立上り部３の下端が土壌２０内に埋設されている。 The fabric foundation 1 is formed in a reverse T-shaped cross section from the footing part 4 and the rising part 3 rising from the substantially upper center of the footing part 4, and the lower ends of the footing part 4 and the rising part 3 are embedded in the soil 20. Has been.
土間コンクリート２は、その周端部が布基礎１の立上り部３の内側面に打継ぎされていて、布基礎１で囲まれた床下の土壌２０の略全面を覆うようにして設置されている。 The soil concrete 2 is installed so that the peripheral edge part is spliced to the inner surface of the rising part 3 of the cloth foundation 1 and covers substantially the entire surface of the soil 20 under the floor surrounded by the cloth foundation 1. .
そして、布基礎１の立上り部３の内側面と土間コンクリート２の端部上面とに跨って、建築用部材としての断熱材５ａ、５ｂが床下空間を囲むようにして設けられている。この断熱材５ａ、５ｂは、布基礎１の立上り部３の内側面に張り付けられた発泡ポリスチレン等の発泡樹脂からなる縦方向の断熱材５ａと、土間コンクリート２の端部上面に張り付けられた発泡ポリスチレン等の発泡樹脂からなる横方向の断熱材５ｂとからなり、縦方向の断熱材５ａの下面を、横方向の断熱材５ｂの端部上面に当接することによって断面略Ｌ字状に形成されている。 And the heat insulating materials 5a and 5b as building members are provided so as to surround the underfloor space over the inner side surface of the rising portion 3 of the fabric foundation 1 and the upper end surface of the soil concrete 2. The heat insulating materials 5a and 5b are a vertical heat insulating material 5a made of a foamed resin such as expanded polystyrene attached to the inner surface of the rising portion 3 of the fabric foundation 1, and a foam attached to the upper surface of the end of the soil concrete 2. It comprises a horizontal heat insulating material 5b made of foamed resin such as polystyrene, and is formed in a substantially L-shaped cross section by contacting the lower surface of the vertical heat insulating material 5a with the upper surface of the end of the horizontal heat insulating material 5b. ing.
上記基礎の防蟻構造として、布基礎１の立上り部３と土間コンクリート２の周端部との接合部分におけるクラックの発生を抑制するためのクラック抑制手段１０が設けられ、さらに土間コンクリート２の断熱材５ｂを避けるようにして、土間コンクリート２の断熱材５ｂが設けられていない箇所に、防蟻処理を施したクラック誘発部位１５が設けられている。 As the above ant-proof structure of the foundation, there is provided a crack suppressing means 10 for suppressing the generation of cracks at the joint portion between the rising portion 3 of the fabric foundation 1 and the peripheral end portion of the interstitial concrete 2, and further insulation of the interstitial concrete 2. In order to avoid the material 5b, the crack induction part 15 which performed the ant-proof process is provided in the location where the heat insulating material 5b of the soil concrete 2 is not provided.
クラック抑制手段１０は、図１及び図２に示すように、土間コンクリート２の周端部に鋼材等からなる配筋１１を埋設することにより構成されている。この配筋１１により、土間コンクリート２の周端部の経時的な乾燥に伴う収縮を抑制して、布基礎１の立上り部３と土間コンクリート２の接合部分におけるクラックの発生を抑えることができる。 As shown in FIGS. 1 and 2, the crack suppressing means 10 is configured by embedding reinforcing bars 11 made of steel or the like at the peripheral end of the soil concrete 2. By this reinforcing bar 11, the shrinkage | contraction with time-dependent drying of the peripheral edge part of the soil concrete 2 can be suppressed, and generation | occurrence | production of the crack in the junction part of the standing part 3 of the cloth foundation 1 and the soil concrete 2 can be suppressed.
防蟻処理を施したクラック誘発部位１５は、図１及び図２に示すように、土間コンクリート２の上面に形成した断面略コ字状の凹入溝１６に防蟻剤１７を充填させることにより構成されている。凹入溝１６は、図３に示すように、横方向の断熱材５ｂ及び配筋１１よりも内側において、これら断熱材５ｂ及び配筋１１に沿って枠状に形成されている。この凹入溝１６が形成された部位は、薄肉となっていて強度が低下しており、土間コンクリート２の収縮応力が集中してクラックが発生し易くなっている。防蟻剤１７としては、防蟻薬液を含浸させたシーラントが用いられているが、シロアリの侵入を防ぐものであればどのようなものであっても良く、例えばシロアリの侵入を物理的に阻止する粒状のものや薬剤を含浸させた粒状のもの、さらには防蟻断熱材であっても良い。 As shown in FIGS. 1 and 2, the crack-inducing portion 15 subjected to the ant-proofing treatment is filled with an ant-proofing agent 17 in a recessed groove 16 having a substantially U-shaped cross section formed on the upper surface of the soil concrete 2. It is configured. As shown in FIG. 3, the recessed groove 16 is formed in a frame shape along the heat insulating material 5 b and the reinforcing bar 11 inside the horizontal heat insulating material 5 b and the reinforcing bar 11. The portion where the recessed groove 16 is formed is thin and has a reduced strength, and the shrinkage stress of the interstitial concrete 2 is concentrated and cracks are easily generated. A sealant impregnated with an ant-proofing agent solution is used as the ant-proofing agent 17, but any material can be used as long as it prevents the entry of termites. For example, the entry of termites is physically blocked. It may be a granular material to be impregnated, a granular material impregnated with a chemical, or an ant-proof heat insulating material.
上記構成においては、断熱材５ａ、５ｂによって覆われる布基礎１と土間コンクリート２との接合部分におけるクラックの発生を抑制するとともに、断熱材５ｂを避けるようにして設けたクラック誘発部位１５において、土間コンクリート２の収縮応力を集中させながら同時に防蟻処理を施すようにしているので、良好な防蟻性能を維持しながらも、断熱材５a、５ｂの施工と防蟻処理とを互いに関係なく別々に行うことができる。これにより、従来のように防蟻処理を待ってから断熱材を施工するときと比べて、施工性の向上を図ることができ、また防蟻効果が消失した防蟻剤の交換作業も簡単となって、メンテナンス性も向上することができる。 In the above configuration, in the crack induction site 15 provided to suppress the generation of cracks at the joint portion between the cloth foundation 1 and the soil concrete 2 covered with the heat insulating materials 5a and 5b and to avoid the heat insulating material 5b, Since the contracting stress of the concrete 2 is concentrated and the ant-proofing treatment is performed at the same time, the insulation of the heat insulating materials 5a and 5b and the ant-proofing treatment are separately performed independently of each other while maintaining good ant-proofing performance. It can be carried out. As a result, it is possible to improve the workability compared to the case of installing the heat insulating material after waiting for the ant protection treatment as in the past, and it is also easy to replace the ant protection agent that has lost its ant protection effect. Thus, maintainability can also be improved.
この発明は、上記実施形態に限定されるものではなく、この発明の範囲内で多くの変更及び修正を加え得ることは勿論である。例えば、上記実施形態においては、土間コンクリート２の収縮を規制するための配筋１１が、土間コンクリート２の端部にのみ埋設されているが、図４に示すように、布基礎１の立上り部３と土間コンクリート２の端部に跨って埋設することで、布基礎１と土間コンクリート２とを強固に連結して、接合部分におけるクラックの発生をより確実に防ぐようにしても良い。 The present invention is not limited to the above-described embodiment, and it is needless to say that many changes and modifications can be made within the scope of the present invention. For example, in the above embodiment, the reinforcing bar 11 for restricting the shrinkage of the interstitial concrete 2 is embedded only in the end part of the interstitial concrete 2, but as shown in FIG. 3, the cloth foundation 1 and the soil concrete 2 may be firmly connected by being embedded across the end portions of the soil concrete 2 and the occurrence of cracks in the joint portion may be more reliably prevented.
１・・布基礎、２・・土間コンクリート、３・・立上り部、５ａ、５ｂ・・断熱材、１０・・クラック抑制手段、１１・・配筋、１５・・クラック誘発部位、１６・・凹入溝、１７・・防蟻剤 1 .. Cloth foundation, 2 .... Clay concrete, 3 .... Rising part, 5a, 5b ... Heat insulation, 10 .... Crack suppression means, 11 .... Reinforcement, 15 .... Crack-inducing part, 16 .... Concave Groove, 17 ... Anticide
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| JP5498237B2 (en) * | 2010-04-22 | 2014-05-21 | 旭化成ホームズ株式会社 | Foundation structure |
| KR101089673B1 (en) | 2011-03-02 | 2011-12-15 | (주) 바이오가스노르드코리아 | Anaerobic digestion tank precludable of crack and leakage |
| JP6587805B2 (en) * | 2015-01-27 | 2019-10-09 | フクビ化学工業株式会社 | Building basic structure |
| CN114164975B (en) * | 2021-12-29 | 2023-07-25 | 北京大古建筑技术发展有限公司 | Concrete bearing base layer and construction process thereof |
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| JPH10227036A (en) * | 1997-02-14 | 1998-08-25 | Mitsui Home Co Ltd | Building foundation reinforcing method and structure thereof |
| JP3377416B2 (en) * | 1997-10-20 | 2003-02-17 | 住友林業株式会社 | Basic structure of building |
| JP4633230B2 (en) * | 2000-06-21 | 2011-02-16 | 大和ハウス工業株式会社 | Ant-proof structure between concrete soils |
| JP2003129582A (en) * | 2001-05-16 | 2003-05-08 | Senko Techno:Kk | Anti-termite structure |
| JP4133704B2 (en) * | 2003-09-10 | 2008-08-13 | フクビ化学工業株式会社 | Insulated underfloor structure and method for applying an ant-proofing treatment to the insulated underfloor structure |
| JP4345505B2 (en) * | 2004-01-29 | 2009-10-14 | 積水ハウス株式会社 | Ant-proof structure and ant-proof construction method |
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