JPH0913366A - Core material for earth retaining wall - Google Patents
Core material for earth retaining wallInfo
- Publication number
- JPH0913366A JPH0913366A JP18654195A JP18654195A JPH0913366A JP H0913366 A JPH0913366 A JP H0913366A JP 18654195 A JP18654195 A JP 18654195A JP 18654195 A JP18654195 A JP 18654195A JP H0913366 A JPH0913366 A JP H0913366A
- Authority
- JP
- Japan
- Prior art keywords
- retaining wall
- core
- sheet
- panel
- earth retaining
- 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.)
- Granted
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地下構造物を構築する
際に、該地下構造物の掘削空間を確保すべく該掘削範囲
の外周周辺に構築される土留め壁の芯材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core material of an earth retaining wall constructed around an outer periphery of an excavation area to secure an excavation space for the underground structure when constructing the underground structure.
【０００２】[0002]
【従来の技術】一般に地下構造物を構築する場合、とり
わけ掘削深度が２０〜３０メートル程度までの比較的浅
い掘削を行なう地下構造物の場合、該地下構造物の専有
面積に応じた地下空間の掘削を行なうためには、この掘
削に着手する前に、図４に示すように、該掘削範囲の外
周周辺を地下構造物に対応した深さにスクリュウオーガ
ーで掘削し、この掘削孔にＨ鋼等の補強材を挿入し、そ
の周囲にコンクリート等の硬化材を充填して強度を補強
した杭（２）の杭打ちを連続的に行なうことによって、
連続地中壁（土留め壁）（１）を構成するか、あるい
は、図５に示すように、バケットで帯状に掘削して、該
帯状の掘削孔に鉄筋籠（５）等の補強材を挿入し、コン
クリート等の硬化材を充填して連続地中壁（１ａ）を打
設することにより、地下構造物の掘削範囲外周の土砂の
崩壊を防止した後、地下空間の掘削が行なわれている。2. Description of the Related Art Generally, when constructing an underground structure, particularly in the case of an underground structure in which excavation depth is relatively shallow up to about 20 to 30 meters, an underground space corresponding to an occupied area of the underground structure is required. Before starting the excavation, as shown in FIG. 4, the periphery of the excavation area is excavated with a screw auger to a depth corresponding to the underground structure. By continuously staking a pile (2) with its strength reinforced by inserting a reinforcing material such as concrete and filling the surroundings with a hardening material such as concrete,
A continuous underground wall (earth retaining wall) (1) is formed or, as shown in FIG. 5, excavated in a belt shape with a bucket, and a reinforcing material such as a reinforcing cage (5) is inserted into the band-shaped excavation hole. Inserting, filling with a hardening material such as concrete, and placing the continuous underground wall (1a) prevents the collapse of the earth and sand around the excavation area of the underground structure, and then excavates the underground space. I have.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、地下構
造物の外周をスクリュウオーガーで掘削し、多量の杭を
連続的に均一に杭打ちすることは、地盤条件から必ずし
も容易ではなく、土質にバラツキがあるような場合、掘
削溝底部において、図４に示したような空隙（３）が杭
（２）と杭（２）との間に生じ、連続地中壁を打設後、
該空隙から地下水の漏水が発生して、土留め効果を低減
し、地下空間掘削作業を困難にする場合もあるという問
題点があった。However, it is not always easy to excavate the perimeter of the underground structure with a screw auger and continuously pile a large number of piles evenly due to ground conditions, and there is a variation in soil quality. In such a case, a gap (3) as shown in FIG. 4 is formed between the piles (2) and (2) at the bottom of the excavation trench, and after driving a continuous underground wall,
There is a problem that groundwater leakage may occur from the gap, thereby reducing the earth retaining effect and making the underground space excavation work difficult.
【０００４】また、バケットによって帯状に掘削した掘
削溝に構築される連続地中壁の場合には、外周の土圧を
面で受けるため、強度確保の観点から、補強材として鉄
筋籠を挿入しており、現場において鉄筋の組み立て作業
が必要で工期およびコスト上問題点があった。In the case of a continuous underground wall constructed in a digging trench excavated in a belt shape by a bucket, a reinforcing steel cage is inserted as a reinforcing material from the viewpoint of securing strength, since the earth pressure on the outer surface is received on the surface. Therefore, rebar assembly work is required on site, and there are problems in terms of construction period and cost.
【０００５】加えて、地下構造物の構築の際には、シー
ルド掘進機で上記連続地中壁の適宜箇所を切削しながら
掘進する必要が出てくるが、その場合、内部にＨ鋼等の
補強材を挿入し、その周囲にコンクリート等の硬化材を
充填した多数の杭（２）からなる地中壁（１）を切削す
るのは容易でなく、一方コンクリート内部に補強材とし
て鉄筋籠（５）を挿入した地中壁（１）の切削では、シ
ールド掘進機に鉄筋が巻き込まれて絡みつく等の問題点
があった。In addition, when constructing an underground structure, it is necessary to excavate while cutting an appropriate portion of the continuous underground wall with a shield excavator. It is not easy to cut the underground wall (1) consisting of a large number of piles (2) around which a reinforcing material is inserted and filled with a hardening material such as concrete. In the cutting of the underground wall (1) into which the (5) was inserted, there was a problem that a reinforcing bar was caught in the shield machine and entangled.
【０００６】従って、本発明は、上記の問題点を解決す
べく、掘削現場における作業工程を簡略化し、さらに土
圧に対する強度を保ちつつ土留壁を薄くすることによっ
て、施工期間の短縮および施工費等のコストの削減がで
きるとともに、土留壁構築後のシールド掘進機による掘
削が容易かつ確実な土留め壁の芯材を提供することを目
的としている。Accordingly, the present invention solves the above problems by simplifying the work process at the excavation site, and further reducing the construction period and the construction cost by thinning the retaining wall while maintaining the strength against earth pressure. It is an object of the present invention to provide a core material for an earth retaining wall that can be easily and reliably excavated by a shield machine after the earth retaining wall is constructed, while reducing costs such as the earth retaining wall.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明では地下空間の掘削範囲の外周の周辺をバケ
ット等の掘削機で掘削し、この掘削溝に多角形または円
形等、適宜形状からなる一連の多数のコアをシート状に
集積したシート状コアをプレートにより両面から挟み込
んだパネルを、土留め壁の芯材として設置し、その周囲
にコンクリート等の硬化材を充填して、薄くて強度の高
い土留め壁を形成する。この場合シート状コアとしては
可塑性樹脂、木材、紙類、または金属等、適宜素材によ
り構成すれば良く、強度増大のため複数のパネルを使用
したり、シート状コア内に流動体や硬化材などの充填材
を充填しても良い。In order to achieve the above object, according to the present invention, the periphery of the excavation range of the underground space is excavated by an excavator such as a bucket, and the excavation groove is appropriately polygonal or circular. A panel in which a sheet-shaped core in which a series of many cores each having a shape is accumulated in a sheet shape is sandwiched by plates from both sides is installed as a core material for an earth retaining wall, and a hardening material such as concrete is filled around the panel. Form a thin and strong retaining wall. In this case, the sheet-shaped core may be made of a suitable material such as a plastic resin, wood, paper, or metal. May be filled.
【０００８】[0008]
【作用】地下空間の掘削範囲の外周の周辺の掘削溝に、
土留め壁の芯材としての上記パネル（以下「パネル」と
いう）を設置し、その周囲にコンクリート等の硬化材を
充填して土留壁を構築し、土圧に対して面で対応する。
該パネルは適宜形状からなる一連の多数のコアをシート
状に集積したシート状コアをプレートにより両面から挟
み込んだパネルからなるものであるため、単位面積あた
りの強度が高く、パネルの幅を薄くすることができるの
で、掘削溝の幅も可及的に狭くでき、土砂の掘削量が著
しく少なくなる。また、掘削深度に応じた土圧の変化に
応じて、事前にパネルの構造を選択し、準備して置くこ
とができるので作業性の向上に役立つとともに、パネル
は比較的柔軟材で構成できるため、土留壁構築後のシー
ルド掘進機による土留壁の切削が容易となる。[Operation] In the excavation groove around the outer periphery of the excavation range of the underground space,
The above-mentioned panel (hereinafter referred to as "panel") as a core material of the earth retaining wall is installed, and a hardening material such as concrete is filled in the periphery thereof to construct an earth retaining wall, which responds to earth pressure in terms of surface.
Since the panel is a panel in which a sheet-like core obtained by accumulating a series of many cores having an appropriate shape in a sheet shape is sandwiched by plates from both sides, the strength per unit area is high and the width of the panel is reduced. As a result, the width of the excavation groove can be made as narrow as possible, and the amount of excavated earth and sand is significantly reduced. In addition, the structure of the panel can be selected in advance according to the change of earth pressure according to the excavation depth, and it can be prepared and placed, which helps improve workability and the panel can be made of a relatively flexible material. , It becomes easy to cut the retaining wall by the shield machine after constructing the retaining wall.
【０００９】[0009]
【実施例】以下、添付図面により本発明に係る土留め壁
芯材の実施例を説明する。図１は、土留め壁芯材である
パネル（６）の構造を、一部を切欠して示したものであ
る。このパネル（６）では、シート状に連続しているコ
ア（８）はハニカム状であるが、一般にはハニカム状を
含む多角形、または円形等、適宜形状からなる一連の多
数のコアであって、シート状に集積した可塑性樹脂、木
材、紙類、またはアルミ等の軽金属等の素材からなるシ
ート状コア（８）を、金属またはプラスティック等の素
材からなるプレート（７、７ａ）によって、両面から挟
み込んでパネル（６）を構成している。上記シート状コ
ア（８）およびプレート（７、７ａ）の素材は、掘削深
度による土圧の違いによって、適宜選択が可能である
が、シート状コア（８）の素材を木材または紙類とした
場合には、プレート（７、７ａ）の素材を金属または硬
質プラスティック等の防水素材とし、プレート（７、７
ａ）間にキャップ（１０）を取り付ける等の防水措置を
講ずるか、パネル（６）内部のシート状コア（８）を防
水加工しておくことが好ましい。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a retaining wall core material according to the present invention. FIG. 1 shows the structure of a panel (6), which is a core material of a retaining wall, with a part cut away. In this panel (6), the core (8) which is continuous in a sheet shape is a honeycomb shape, but is generally a series of many cores having an appropriate shape such as a polygon including the honeycomb shape or a circle. A sheet-like core (8) made of a material such as a plastic resin, wood, paper, or light metal such as aluminum accumulated in a sheet-like shape, and a plate (7, 7a) made of a material such as a metal or a plastic is used to cover the sheet core (8) from both sides. The panel (6) is sandwiched therebetween. The material of the sheet core (8) and the plates (7, 7a) can be appropriately selected depending on the difference in earth pressure depending on the excavation depth, but the material of the sheet core (8) is wood or paper. In this case, the plate (7, 7a) is made of a waterproof material such as metal or hard plastic, and the plate (7, 7a) is made of a waterproof material.
It is preferable to take a waterproof measure such as attaching a cap (10) between a) or waterproof the sheet core (8) inside the panel (6).
【００１０】図２は、土圧に対するパネル自体の強度を
考慮して構成されたパネル（６）のバリエーションを示
すものである。図２のａに示した基本的な構造のパネル
（６）では、シート状に集積されたハニカム状のシート
状コア（８）をアルミニウム製のプレート（７、７ａ）
によって、両面から挟み込んでパネルを構成している。
図２のａに示したパネルを単板として用いる場合の他、
図２のｂに示したシート状コア（８）とプレート（７、
７ａ）との間隙に流動体又は硬化材等の充填材（１２）
を充填したもの、あるいは図２のｃに示したような前記
ａのパネル（６）を接着剤（９）等を用いて複数枚重ね
た構造のもの等がある。従って、必要に応じてこれらパ
ネル（６）単体やこれらの組合わされたものを選択で
き、かつ事前にパネル（６）として形成しておくことが
できる。FIG. 2 shows a variation of the panel (6) configured in consideration of the strength of the panel itself against the earth pressure. In the panel (6) having the basic structure shown in FIG. 2A, a honeycomb-shaped sheet core (8) integrated in a sheet shape is made of an aluminum plate (7, 7a).
Thus, the panel is sandwiched from both sides.
In addition to the case where the panel shown in FIG.
The sheet core (8) and the plate (7, shown in FIG.
A filler (12) such as a fluid or a hardener in the gap with 7a)
Or a structure in which a plurality of the panels (6) shown in FIG. 2A are stacked using an adhesive (9) or the like as shown in FIG. 2C. Therefore, the panel (6) alone or a combination thereof can be selected as necessary, and can be formed in advance as the panel (6).
【００１１】つぎに、本実施例に基づくパネル（６）を
用いた土留め壁（１１）の構築を図３に基づいて説明す
る。図３はパネル（６）を芯材として、このパネルの周
囲にコンクリート等の硬化材（４）を充填してなる土留
め壁（１１）を示す平面図である。地下構造物の構築に
必要とされる地下空間の掘削に先立って行なわれる土留
め壁（１１）の構築では、まず該地下空間の外周周辺の
地盤を、通常の連続地中壁構築に用いられるバケットや
薄膜用の回転式あるいはチェーン式等の掘削機によって
掘削する。この際、該掘削作業に伴って、掘削された掘
削溝に泥水を注入し、満たした該泥水の水圧によって該
掘削溝が崩壊するのを防止しながら、掘削を行なう。続
いて、泥水の満たされた掘削溝内に、土留め壁（１１）
の芯材として、図１で示された構造を有するパネル
（６）を順次挿入する。次に一旦満たした泥水をポンプ
等による排水を行ないながら、該排水に置き換えてコン
クリート等の硬化材（４）を充填する。Next, the construction of the earth retaining wall (11) using the panel (6) according to the present embodiment will be described with reference to FIG. FIG. 3 is a plan view showing a retaining wall (11) formed by filling a hardening material (4) such as concrete around the panel with the panel (6) as a core material. In the construction of the retaining wall (11) performed prior to the excavation of the underground space required for the construction of the underground structure, first, the ground around the outer periphery of the underground space is used for ordinary continuous underground wall construction. Excavation is performed by a rotary or chain type excavator for buckets and thin films. At this time, along with the excavation work, muddy water is injected into the excavated excavation groove, and excavation is performed while preventing the excavation groove from collapsing due to the filled muddy water pressure. Next, a retaining wall (11) was set in the excavation trench filled with muddy water.
The panel (6) having the structure shown in FIG. Next, while draining the once filled muddy water by a pump or the like, the wastewater is replaced with the drainage and a hardening material (4) such as concrete is filled.
【００１２】本発明は上記実施例に限定されるものでは
なく、例えば上記実施例では掘削溝に図２のａのパネル
を土留め壁の芯材（６）として挿入しているが、図２の
パネルｂのようにシート状コア（８）内に流動体又は硬
化材等の充填材（１２）をあらかじめ充填したもの、あ
るいはパネルｃのように複数枚のパネルを重ねてサンド
イッチ状に構成したものを用いれば、土留め壁の面強度
を更に高めることができるから、前記パネルｂまたはｃ
を土留め壁芯材（６）として用いた場合、該芯材（６）
の周囲に充填されるコンクリート等の硬化材の使用量を
軽減することが６できる。The present invention is not limited to the above embodiment. For example, in the above embodiment, the panel shown in FIG. 2A is inserted into the excavation groove as the core material (6) of the retaining wall. The sheet-shaped core (8) was previously filled with a filler (12) such as a fluid or a hardening material as in panel b, or a plurality of panels were stacked as in panel c to form a sandwich. The use of a panel can further increase the surface strength of the retaining wall.
When used as the earth retaining wall core material (6), the core material (6)
It is possible to reduce the amount of hardening material, such as concrete, which is filled around the space.
【００１３】[0013]
【発明の効果】以上述べたように、本発明に係る土留め
壁芯材によれば、土留め壁は土圧に対してパネル面で対
応するものであるから、連続杭打ちによる地中壁に見ら
れるような、杭打ちの不揃いによる杭と杭との空隙から
生ずる地下水の漏水を避けることができる。また、補強
材として鉄筋籠等を現場で組み立てて挿入する作業や、
Ｈ鋼等を内部に挿入した多量の杭の連続杭打ちを省くこ
とができるので作業性の向上に役立つ。As described above, according to the core material of the earth retaining wall according to the present invention, the earth retaining wall responds to the earth pressure on the panel surface. The leakage of groundwater caused by gaps between piles due to uneven pile driving, as shown in FIG. In addition, work to assemble and insert reinforced baskets on site as reinforcement,
Since continuous pile driving of a large number of piles in which H steel or the like is inserted can be omitted, workability is improved.
【００１４】さらに、土留め壁芯材を、シート状の多角
形または円形等、その他適宜形状の一連のコアを両面か
らプレートで挟み込む構造とすることによって、安価な
材料で強度を損なわずに土留め壁芯材を構成できるか
ら、土留め壁芯材の周囲に充填されるコンクリート等の
硬化材の使用量を効果的に調節でき、土留め壁全体の厚
さを薄くすることができ、掘削溝の掘削面積を大幅に減
らすことができる。Further, the earth retaining wall core material has a structure in which a series of cores having a sheet shape, such as a polygon or a circle, and other suitable shapes are sandwiched between plates from both sides, so that an inexpensive material can be used without impairing the strength. Since the retaining wall core material can be configured, the amount of hardening material such as concrete to be filled around the retaining wall core material can be effectively adjusted, the thickness of the entire retaining wall can be reduced, and excavation can be performed. Drilling area can be greatly reduced.
【００１５】加えて、シート状コアとプレートの素材お
よびパネルの構造を、必要な強度に応じて、事前に選択
し、準備しておくことができるので、土留め壁構築現場
における工程の短縮を図ることができ、材料費および施
工費のコストを可及的に削減できる。In addition, the material of the sheet-shaped core and the plate and the structure of the panel can be selected and prepared in advance according to the required strength, so that the process at the earth retaining wall construction site can be shortened. The cost of material and construction can be reduced as much as possible.
【００１６】さらにまた、他の地下構造物の構築の際
に、シールド掘進機で上記連続地中壁の適宜箇所を切削
しながら掘進する場合でも、連続地中壁内にＨ鋼が埋設
されたものに比べて簡単かつ容易に掘削でき、コンクリ
ート内部に補強材として鉄筋籠を挿入した地中壁のよう
に、掘進機に鉄筋が巻き込まれて絡みつくといった問題
も回避できる。Furthermore, when constructing another underground structure, even when excavating while cutting an appropriate part of the continuous underground wall with a shield excavator, H steel is embedded in the continuous underground wall. It can be excavated easily and easily as compared with a concrete one, and the problem that a reinforcing bar is entangled in a digging machine, such as an underground wall in which a reinforcing bar is inserted as a reinforcing material in concrete, can be avoided.
【図１】本発明に係る土留め壁芯材の実施例を示すもの
で、土留め壁芯材の構造を一部を切欠して示した斜視図
である。FIG. 1 is a perspective view showing an embodiment of a retaining wall core material according to the present invention, in which the structure of the retaining wall core material is partially cut away.
【図２】ａは本発明の実施例に係る土留め壁芯材の基本
的な構成を示す側面図、ｂおよびｃはそのバリエーショ
ンである土留め壁芯材の側面図である。FIG. 2A is a side view showing a basic configuration of a retaining wall core material according to an embodiment of the present invention, and FIGS. 2B and 2C are side views of a variation of the retaining wall core material.
【図３】本発明の実施例に係る土留め壁芯材を用いて構
築された地中壁の平断面図である。FIG. 3 is a plan sectional view of an underground wall constructed using the core material of the retaining wall according to the embodiment of the present invention.
【図４】掘削溝に杭を連続杭打ちすることにより構築さ
れる、従来方法による連続地中壁の概要を示す斜視図で
ある。FIG. 4 is a perspective view showing an outline of a continuous underground wall according to a conventional method, which is constructed by continuously driving piles into an excavation trench.
【図５】掘削溝に鉄筋籠を補強材として用いて構築され
る、従来方法による連続地中壁の概要を一部切欠して示
す斜視図である。FIG. 5 is a partially cutaway perspective view showing an outline of a continuous underground wall according to a conventional method, which is constructed by using a reinforcing rod cage as a reinforcing material in an excavation trench.
４・・・・・硬化材（コンクリート） ６・・・・・パネル（芯材） ７、７ａ・・プレート ８・・・・・シート状コア １１・・・・土留め壁 １２・・・・充填材 4 ··· Hardened material (concrete) 6 ··· Panel (core material) 7, 7a · Plate 8 ··· Sheet core 11 ··· Retaining wall 12 ··· Filler
フロントページの続き (72)発明者 沼澤 憲二郎 東京都台東区東上野３丁目19番６号 帝都 高速度交通営団内Front page continuation (72) Inventor Kenjiro Numasawa 3-19-6 Higashiueno, Taito-ku, Tokyo Inside the Teito High Speed Transportation Company
Claims (4)
囲の外周周辺に構築される土留め壁において、該土留め
壁の芯材が、多角形または円形等、適宜形状からなる一
連の多数のコアをシート状に集積したシート状コア
（８）をプレート（７、７ａ）により両面から挟み込ん
だパネル（６）であることを特徴とする土留め壁芯材。1. When constructing an underground structure, in an earth retaining wall which is constructed around the outer periphery of an excavation range in advance, a core material of the earth retaining wall has a suitable shape such as a polygon or a circle. An earth retaining wall core material comprising a panel (6) in which a sheet-shaped core (8) obtained by accumulating a large number of cores in a sheet shape is sandwiched by plates (7, 7a) from both sides.
紙類、または金属等、適宜素材からなる請求項１記載の
土留め壁芯材。2. The sheet core (8) is made of a plastic resin, wood,
The earth retaining wall core material according to claim 1, which is made of an appropriate material such as paper or metal.
（９）により接着された請求項１および請求項２いずれ
か記載の土留め壁芯材。3. The earth retaining wall core material according to claim 1, wherein the plurality of panels (6) (6) are adhered to each other with an adhesive (9).
充填された請求項１乃至請求項３いずれか記載の土留め
壁芯材。4. The earth retaining wall core material according to claim 1, wherein the sheet-shaped core (8) is filled with a filler (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7186541A JP2722185B2 (en) | 1995-06-30 | 1995-06-30 | Earth retaining wall core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7186541A JP2722185B2 (en) | 1995-06-30 | 1995-06-30 | Earth retaining wall core material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0913366A true JPH0913366A (en) | 1997-01-14 |
| JP2722185B2 JP2722185B2 (en) | 1998-03-04 |
Family
ID=16190313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7186541A Expired - Fee Related JP2722185B2 (en) | 1995-06-30 | 1995-06-30 | Earth retaining wall core material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2722185B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8582959B2 (en) | 1998-03-06 | 2013-11-12 | Samsung Electronics Co., Ltd. | Apparatus for recording and/or playing back catalog information |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632800A (en) * | 1992-07-15 | 1994-02-08 | Kanegafuchi Chem Ind Co Ltd | Protein-immobilized carrier and separation of cell using the same |
-
1995
- 1995-06-30 JP JP7186541A patent/JP2722185B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0632800A (en) * | 1992-07-15 | 1994-02-08 | Kanegafuchi Chem Ind Co Ltd | Protein-immobilized carrier and separation of cell using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8582959B2 (en) | 1998-03-06 | 2013-11-12 | Samsung Electronics Co., Ltd. | Apparatus for recording and/or playing back catalog information |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2722185B2 (en) | 1998-03-04 |
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