JPH0464373B2 - - Google Patents
Info
- Publication number
- JPH0464373B2 JPH0464373B2 JP22615487A JP22615487A JPH0464373B2 JP H0464373 B2 JPH0464373 B2 JP H0464373B2 JP 22615487 A JP22615487 A JP 22615487A JP 22615487 A JP22615487 A JP 22615487A JP H0464373 B2 JPH0464373 B2 JP H0464373B2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- concrete slab
- floor
- earthen
- filler
- 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
Links
- 239000004567 concrete Substances 0.000 claims description 32
- 239000000945 filler Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 241001070941 Castanea Species 0.000 description 2
- 235000014036 Castanea Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000004795 extruded polystyrene foam Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は軟弱な地盤に建てられた倉庫、工場
等の建築物の土間コンクリートスラブに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a concrete slab with an earthen floor for buildings such as warehouses and factories built on soft ground.
従来の土間コンクリートスラブは良質の地盤に
建てた建築物に適用されている。すなわち、第２
図に示すごとく、良質の地盤１の面に接して割栗
２、均しコンクリート３、土間コンクリート４を
打設し、土間コンクリートスラブ５を形成してい
た。これに対して軟弱な地盤の場合は、上記のよ
うな土間コンクリートスラブでは、その上にのる
積載物の重量により接地圧が過大となり、沈下等
が発生する。このため、従来は第３図のごとく、
地盤が積載物の重量に対して充分な耐力を持つて
いない軟弱地盤６の場合は、杭７等で支持した構
造床８となし、その重量を支持地盤へ伝達する手
段がとられていた。なお第２，３図において９は
建築物、１０は基礎、１１は積載物である。
Conventional concrete slabs with dirt floors are applied to buildings built on good quality ground. That is, the second
As shown in the figure, cracked chestnuts 2, leveled concrete 3, and dirt floor concrete 4 were placed in contact with the surface of good quality ground 1 to form a dirt floor concrete slab 5. On the other hand, in the case of soft ground, the ground pressure of a concrete slab with an earthen floor as described above becomes excessive due to the weight of the load placed on it, causing subsidence. For this reason, conventionally, as shown in Figure 3,
In the case of soft ground 6 that does not have sufficient bearing capacity for the weight of the loaded object, a structural floor 8 supported by piles 7 or the like is used to transfer the weight to the supporting ground. In FIGS. 2 and 3, 9 is a building, 10 is a foundation, and 11 is a loaded object.
この発明は上記事情に鑑みなされたものであ
る。その目的は軟弱な地盤に構築した建築物であ
りながら土間コンクリートスラブとすることがで
き、構造床とした場合に必要となる杭、基礎ある
いは地中梁等が不要となり、工費の低減、工期の
短縮を図ることができる建築物の土間コンクリー
トスラブを提案するにある。 This invention was made in view of the above circumstances. The purpose of this is that even though the building is built on soft ground, it can be constructed with a concrete slab with an earthen floor, eliminating the need for piles, foundations, or underground beams that would be required for a structural floor, reducing construction costs and shortening the construction period. The objective is to propose a concrete slab with an earthen floor for buildings that can be shortened.
この建築物の土間コンクリートスラブは軟弱地
盤に構築した建築物の土間コンクリートスラブで
あつて、土間コンクリートスラブと支持地盤との
間に低密度、高圧縮強度の充填物が配してあるこ
とを特徴とする。
The earthen floor concrete slab of this building is a earthen floor concrete slab of a building constructed on soft ground, and is characterized by a low density, high compressive strength filler placed between the earthen floor concrete slab and the supporting ground. shall be.
第１図に示す実施例は軟弱地な地盤６上に構築
した建築物９であり、躯体の周囲に打込んだ杭
７、基礎１０に支持されている。建築物内部の床
面は軟弱地盤６を所定の深さ掘削し、十分転圧し
た削孔内に直方体形のポリスチレン押出発泡体か
らなる充填物１２を詰込み、その上に土間コンク
リートスラブ５を打設しなつている。 The embodiment shown in FIG. 1 is a building 9 built on soft ground 6, and is supported by piles 7 and foundations 10 driven around the frame. For the floor surface inside the building, soft ground 6 is excavated to a predetermined depth, a filler 12 made of extruded polystyrene foam in the shape of a rectangular parallelepiped is packed into the well-compacted hole, and a concrete slab 5 for the earthen floor is placed on top of the filler 12. The concrete is being poured.
充填物は低密度（低嵩密度）、高圧縮強度でな
くてはならない。密度が0.01〜0.1ｇ／cm3、圧縮
強度（JIS 9511、（歪５％））1.0〜10.0Kg〓／cm2
の範囲のものが好適に用いられる。例えば、押出
発泡あるいはビーズ発泡したポリスチレン発泡体
は上記範囲の密度、圧縮強度とすることができ、
かつ、耐水性、耐久性が優れより好適である。 The filling must have low density (low bulk density) and high compressive strength. Density is 0.01~0.1g/cm 3 , Compressive strength (JIS 9511, (5% strain)) 1.0~10.0Kg〓/cm 2
Those within the range of are preferably used. For example, extruded or bead-foamed polystyrene foam can have a density and compressive strength within the above ranges,
Moreover, it is more suitable because it has excellent water resistance and durability.
充填物を詰込む深さは、土間コンクリートスラ
ブ５上に積載物１１をのせた状態で、充填物１２
の下端面が接する支持地盤１３面にかかる接地圧
が元の地盤の自重による内部応力と略等しくなる
ようにすると好適である。すなわち、積載物１
１、土間コンクリートスラブ５および充填物１２
の重量を充填物１２を詰込むため掘削する軟弱地
盤６の重量に略等しくするとよい。このことは積
載物重量、土間コンクリートスラブ重量のほか、
充填材の密度を条件として充填材の詰込み深さを
調整しなくてはならない。また、同時に支持地盤
にかかる接地圧に耐える圧縮強度をもつた充填材
を用いる必要がある。 The depth at which the filler is packed is such that when the load 11 is placed on the earthen concrete slab 5, the filler 12
It is preferable that the ground pressure applied to the support ground 13 surface with which the lower end surface of the support ground 13 is made to be approximately equal to the internal stress due to the original ground's own weight. That is, load 1
1. Earthen floor concrete slab 5 and filler 12
It is preferable to make the weight approximately equal to the weight of the soft ground 6 to be excavated for filling the filler 12. This includes the weight of the loaded object, the weight of the concrete slab on the earthen floor, and
The packing depth of the filler must be adjusted depending on the density of the filler. At the same time, it is necessary to use a filler material that has a compressive strength that can withstand the ground pressure applied to the supporting ground.
なおこの土間コンクリートスラブは通常、スチ
ールフアイバーコンクリートあるいは鉄筋コンク
リートとなし補強することができる。 Note that this earth-floor concrete slab can usually be reinforced with steel fiber concrete or reinforced concrete.
この建築物の土間コンクリートスラブは支持地
盤との間に低密度、高圧縮強度の充填材が詰込ん
であるので支持地盤上面での接地圧を低減せしめ
ることができる。従つて軟弱地盤であつても、積
載物重量による土間コンクリートスラブの沈下を
抑制することが可能となる。
Since the earthen floor concrete slab of this building is filled with a low-density, high-compressive-strength filler between it and the supporting ground, it is possible to reduce the ground pressure on the upper surface of the supporting ground. Therefore, even if the ground is soft, it is possible to suppress the subsidence of the earthen concrete slab due to the weight of the loaded object.
この発明は以上の通りであり、この土間コンク
リートスラブは軟弱地盤であつても構造床とする
必要がないので、杭、基礎あるいは地中梁等が不
要となり、地盤の掘削、充填材の詰込みでこれに
代替できるので、工費の低減、工期の短縮を図る
ことができる。 This invention is as described above, and since this earth-floor concrete slab does not need to be used as a structural floor even on soft ground, there is no need for piles, foundations, or underground beams, and there is no need to excavate the ground or fill it with filler. Since it can be replaced with this, it is possible to reduce construction costs and shorten the construction period.
第１図は実施例の建築物の土間コンクリートス
ラブの縦断面図、第２図ａ第３図はそれぞれ従来
の良質地盤につくつた土間コンクリートスラブが
ある建築物および軟弱地盤につくつた構造床があ
る建築物の縦断面図、第２図ｂは第２図ａの土間
コンクリートスラブの拡大図である。
１……良質地盤、２……割栗、３……均しコン
クリート、４……土間コンクリート、５……土間
コンクリートスラブ、６……軟弱地盤、７……
杭、８……構造床、９……建築物、１０……基
礎、１１……積載物、１２……充填物、１３……
支持地盤。
Figure 1 is a longitudinal cross-sectional view of a concrete slab with an earthen floor in a building according to an example, and Figure 2a and Figure 3 are a longitudinal cross-sectional view of a building with a concrete slab on an earthen floor built on conventional good quality ground and a structural floor built on soft ground, respectively. A longitudinal cross-sectional view of a certain building, FIG. 2b, is an enlarged view of the concrete slab with an earthen floor in FIG. 2a. 1...Good quality ground, 2...Split chestnut, 3...Leveled concrete, 4...Earth floor concrete, 5...Earth floor concrete slab, 6...Soft ground, 7...
Pile, 8...Structural floor, 9...Building, 10...Foundation, 11...Loading material, 12...Filling material, 13...
supporting ground.
Claims (1)
トスラブであつて、土間コンクリートスラブと支
持地盤との間に低密度、高圧縮強度の充填物が配
してあることを特徴とする建築物の土間コンクリ
ートスラブ。 ２ 土間コンクリートスラブ上に積載物を積載し
た状態で支持地盤にかかる接地圧が元の地盤の自
重による内部応力と略等しくなるよう充填物が配
してなることを特徴とする特許請求の範囲第１項
記載の建築物の土間コンクリートスラブ。[Claims] 1. A concrete slab with an earthen floor for a building constructed on soft ground, characterized in that a filler with low density and high compressive strength is arranged between the concrete slab with an earthen floor and the supporting ground. A concrete slab with an earthen floor in a building. 2. Claim No. 2 characterized in that the filler is arranged so that the ground pressure applied to the supporting ground when a load is loaded on the earthen concrete slab is approximately equal to the internal stress due to the original ground's own weight. A concrete slab with an earthen floor for the building described in item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22615487A JPS6471924A (en) | 1987-09-09 | 1987-09-09 | Concrete earth-floor slab of building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22615487A JPS6471924A (en) | 1987-09-09 | 1987-09-09 | Concrete earth-floor slab of building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6471924A JPS6471924A (en) | 1989-03-16 |
| JPH0464373B2 true JPH0464373B2 (en) | 1992-10-14 |
Family
ID=16840706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22615487A Granted JPS6471924A (en) | 1987-09-09 | 1987-09-09 | Concrete earth-floor slab of building |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6471924A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6713294B2 (en) * | 2016-02-09 | 2020-06-24 | 西武ポリマ化成株式会社 | Himon structure substructure |
-
1987
- 1987-09-09 JP JP22615487A patent/JPS6471924A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6471924A (en) | 1989-03-16 |
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