JPH0630906Y2 - Seismic isolation and waterproof foundation slab for underground structures - Google Patents
Seismic isolation and waterproof foundation slab for underground structuresInfo
- Publication number
- JPH0630906Y2 JPH0630906Y2 JP12403187U JP12403187U JPH0630906Y2 JP H0630906 Y2 JPH0630906 Y2 JP H0630906Y2 JP 12403187 U JP12403187 U JP 12403187U JP 12403187 U JP12403187 U JP 12403187U JP H0630906 Y2 JPH0630906 Y2 JP H0630906Y2
- Authority
- JP
- Japan
- Prior art keywords
- seismic isolation
- layer
- waterproof
- underground structures
- foundation slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Foundations (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は地震の振動の伝達を極力押え、湧水が構造物
内に浸入することがない地下構造物の免震防水基礎スラ
ブに関するものである。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a seismic isolation and waterproof foundation slab for underground structures that suppresses the transmission of earthquake vibrations and prevents spring water from entering the structure. is there.
地下貯蔵庫、原子炉建屋等の地下構造物において、湧水
が地下構造物内に浸入するのを防止するために、以下の
ような方法がある。In underground structures such as underground storages and reactor buildings, the following methods are available to prevent spring water from entering the underground structures.
イ建屋躯体自体の耐水性を高める。(A) Increase the water resistance of the building frame itself.
ロ構造物と岩盤を切り離し、水圧のかからない構造とす
る。(B) Separate the structure from the bedrock to make the structure free from water pressure.
ハ建屋基礎の外部材或いは内部に防水層を設置する。(C) Install a waterproof layer inside or outside the building foundation.
上記イの方法であると良好な防水コンクリートの開発が
必要であるし、施工が大がかりとなる。ロの方法である
と長期の保守点検が必要となるとともに、やはり施工が
大がかりとなる。ハの方法であると防水層にて岩盤と構
造物との接着性が阻害されるという問題があり、また防
水、接着、耐力を兼ね備えた複合材料の開発が必要であ
る。The above method (a) requires the development of good waterproof concrete and requires large-scale construction. If this method is used, long-term maintenance and inspection will be required, and the construction will also be large-scale. The method c has a problem that the adhesion between the rock and the structure is hindered by the waterproof layer, and it is necessary to develop a composite material having waterproofness, adhesion, and proof strength.
この考案は以上の問題点を解決するためになされたもの
で、充分な耐力を有し、良好な止水性を得ることがで
き、地震の振動を地下構造物に伝達しない地下構造物の
免震防水基礎スラブを提供することを目的とする。The present invention has been made to solve the above problems, and it has sufficient proof strength, can obtain good water stoppage, and does not transmit earthquake vibrations to underground structures. The purpose is to provide a waterproof foundation slab.
地下構造物の免震防水基礎スラブは、地盤底部と地下構
造物間に免震層、防水層、付着層を介在させるものであ
る。The seismic isolation and waterproof foundation slab for underground structures has a seismic isolation layer, a waterproof layer, and an adhesion layer interposed between the ground floor and the underground structure.
免震層は変形性が大きく、例えばブチルゴムシート、ゴ
ムアスファルトシート等が採用できる。The seismic isolation layer is highly deformable, and for example, a butyl rubber sheet, a rubber asphalt sheet, etc. can be adopted.
防水層は止水性を有するものであって、アスファルトコ
ンクリート、金属製防水材等が採用できる。The waterproof layer has a waterproof property, and asphalt concrete, a metal waterproof material, or the like can be used.
付着層は接着力を有するものであって、プライマー等が
使用される。The adhesive layer has an adhesive force, and a primer or the like is used.
以下、図に示す一実施例に基づきこの考案を詳細に説明
する。Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.
図において１は地下空間の地盤底部であり、この底部１
上に捨てコンクリート２を施す。捨てコンクリート２上
には免震層３を敷設する。免震層３は基礎スラブ全体に
水平変位が生じた場合、その変位を一ケ所に集中して生
じさせ、全体に欠陥が伝播しないようにするものであ
る。従ってイ摺りやすいこと、ロ変形性が大きく変形に
よる応力を解消してしまうこと、ハ破壊しやすいこと、
などの特性を持った材料が要求される。このような免震
層３の材料としてはアスファルト、非加硫ブチルゴムシ
ート、ゴムアスファルトシート等が考えられる。このう
ち非加硫ブチルゴムシートは従来のものより低分子のも
のとする。ゴムアスファルトシートは、ゴムの主成分と
して非加硫ブチルゴムの他、安価な再生ゴムを高沸点溶
剤に融かしたものなどが考えられる。In the figure, 1 is the bottom of the underground space, and this bottom 1
Discard concrete on top. A seismic isolation layer 3 is laid on the discarded concrete 2. The seismic isolation layer 3 concentrates the displacement in one place when horizontal displacement occurs in the entire foundation slab so that the defect does not propagate to the whole. Therefore, it is easy to slide, b) the deformability is large, the stress due to the deformation is eliminated, and the c is easily broken,
Materials with such characteristics are required. As a material for such seismic isolation layer 3, asphalt, non-vulcanized butyl rubber sheet, rubber asphalt sheet, etc. can be considered. Among them, the non-vulcanized butyl rubber sheet has a lower molecular weight than conventional ones. As the rubber asphalt sheet, in addition to non-vulcanized butyl rubber as the main component of rubber, inexpensive recycled rubber melted in a high boiling solvent may be considered.
免震層３上には防水層４を敷設する。防水層４は水平変
位によって切断したり剥離したりせず、止水性を長期的
に保持していかなければならない。この防水性の特性と
してイ水平せん断ズレに対して切断又は剥離しにくい、
ロ長期圧縮荷重に対し流出しないこと、ハ不規則な凹凸
面上にも施工できること、が要求される。このような防
水層４として金属箔のような金属製防水材、アスファル
トコンクリート、ゴムアスファルト等が採用できる。A waterproof layer 4 is laid on the seismic isolation layer 3. The waterproof layer 4 must not be cut or peeled off due to horizontal displacement, and must maintain its waterproof property for a long time. As this waterproof property, it is difficult to cut or peel off due to horizontal shear displacement.
(B) It is required that it does not flow out for a long-term compressive load and that it can be applied to irregular irregular surfaces. As the waterproof layer 4, a metal waterproof material such as a metal foil, asphalt concrete, rubber asphalt, or the like can be used.
防水層４上には付着層５を敷設する。付着層５は防水層
４と未硬化のコンクリートとの付着を向上させるための
ものである。付着層５としてはポリウレタン系の湿潤面
プライマー等が採用できる。なおこの他摩擦抵抗を増加
させるとともに付着面積を確保するために、防水層４の
上にナイロン又はビニロンシートを敷き、その上にプラ
イマーを塗布するのも有効である。An adhesion layer 5 is laid on the waterproof layer 4. The adhesion layer 5 is for improving the adhesion between the waterproof layer 4 and the uncured concrete. As the adhesion layer 5, a polyurethane-based wet surface primer or the like can be adopted. In addition, in order to increase the friction resistance and secure the adhesion area, it is also effective to lay a nylon or vinylon sheet on the waterproof layer 4 and apply a primer on it.
付着槽５上には基礎スラブ６を構築する。図において７
は地上建屋であり、８は埋戻し土である。A base slab 6 is built on the adhesion tank 5. 7 in the figure
Is an aboveground building, and 8 is backfill soil.
この考案は以上のような構成を有し、免震層の変形性に
よって地震の振動を構造物に伝達せず、免震効果を得る
ことができる。また防水層によって構造物内への湧水の
浸入を防止する。付着層によって構造物を防水層に付着
して防水効果を損わない。The present invention has the above-mentioned structure, and the seismic isolation effect can be obtained without transmitting the vibration of the earthquake to the structure due to the deformability of the seismic isolation layer. In addition, the waterproof layer prevents the intrusion of spring water into the structure. The adhesive layer does not impair the waterproof effect by attaching the structure to the waterproof layer.
第１図はこの考案を実施した建屋の一実施例の縦断面
図、第２図は第１図のII部断面図である。 １……地盤底部、２……捨てコンクリート、３……免震
層、４……防水層、５……付着層、６……基礎スラブ、
７……建屋、８……埋戻し土。FIG. 1 is a vertical sectional view of an embodiment of a building in which the present invention is implemented, and FIG. 2 is a sectional view taken along the line II in FIG. 1 ... Ground bottom, 2 ... Waste concrete, 3 ... Seismic isolation layer, 4 ... Waterproof layer, 5 ... Adhesive layer, 6 ... Foundation slab,
7: Building, 8: Backfill soil.
Claims (1)
し、この免震層上に止水性を有する防水層を敷設し、防
水層上には接着力を有する付着層を敷設し、この付着層
上に基礎スラブを構築したことを特徴とする地下構造物
の免震防水基礎スラブ。1. A seismic isolation layer having high deformability is laid on the bottom of the ground, a waterproof layer having waterproofness is laid on the seismic isolation layer, and an adhesive layer having an adhesive force is laid on the waterproof layer. , A base slab for basement isolation of underground structures, characterized in that a base slab is constructed on this adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403187U JPH0630906Y2 (en) | 1987-08-13 | 1987-08-13 | Seismic isolation and waterproof foundation slab for underground structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12403187U JPH0630906Y2 (en) | 1987-08-13 | 1987-08-13 | Seismic isolation and waterproof foundation slab for underground structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6429404U JPS6429404U (en) | 1989-02-22 |
| JPH0630906Y2 true JPH0630906Y2 (en) | 1994-08-22 |
Family
ID=31373415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12403187U Expired - Lifetime JPH0630906Y2 (en) | 1987-08-13 | 1987-08-13 | Seismic isolation and waterproof foundation slab for underground structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630906Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7350502B2 (en) * | 2019-04-15 | 2023-09-26 | 数臣 和久田 | Detached houses and their construction methods |
| WO2025120871A1 (en) * | 2023-12-08 | 2025-06-12 | 日本国土開発株式会社 | Charging device and charging method |
-
1987
- 1987-08-13 JP JP12403187U patent/JPH0630906Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6429404U (en) | 1989-02-22 |
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