JP3490907B2 - Fire-resistant structure made of heat-insulating fire-resistant members of concrete segments for tunnels. - Google Patents
Fire-resistant structure made of heat-insulating fire-resistant members of concrete segments for tunnels.Info
- Publication number
- JP3490907B2 JP3490907B2 JP27198598A JP27198598A JP3490907B2 JP 3490907 B2 JP3490907 B2 JP 3490907B2 JP 27198598 A JP27198598 A JP 27198598A JP 27198598 A JP27198598 A JP 27198598A JP 3490907 B2 JP3490907 B2 JP 3490907B2
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- concrete
- fire
- heat
- insulating material
- 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 - Fee Related
Links
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- Lining And Supports For Tunnels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、トンネルのセグメ
ントを耐火保護できるトンネル用コンクリートセグメン
トの断熱質部材による耐火構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof structure of a concrete segment for a tunnel, which can protect a segment of a tunnel from fire, by using a heat insulating material.
【０００２】[0002]
【従来の技術】従来から、セグメントで構成されるトン
ネルの自動車火災に対する防災設計は、その内空側を厚
み約２０〜３０ｃｍのコンクリートで覆う二次覆工方式
が採られている。そのため二次覆工の厚み相当分だけト
ンネル径が大きくなるため建設費の高騰を招いている。
建設費のコストアップを抑制するには、二次覆工を薄く
することが有効であるが、これを実現するには同時に断
熱性を強化する必要がある。即ち、厚みが薄い断熱質部
材を適用することが考えられる。断熱質部材をセグメン
トに接合する方法としては、在来工法として現場で取り
付ける各種工法が考えられるが、単に現場で取り付ける
だけでは経済性、工期などの点で不十分である。また、
接合面では、セグメント製作、貯蔵、運搬、組立、供用
時において、十分な接合強度を有し剥離しないことが要
求されることは勿論である。2. Description of the Related Art Conventionally, a secondary lining method of covering the inner space side with concrete having a thickness of about 20 to 30 cm has been adopted for a disaster prevention design of a tunnel composed of segments against a car fire. Therefore, the tunnel diameter is increased by an amount corresponding to the thickness of the secondary lining, resulting in higher construction costs.
To suppress the increase in construction cost, it is effective to make the secondary lining thinner, but in order to realize this, it is necessary to strengthen the heat insulating property at the same time. That is, it is conceivable to apply a heat insulating material having a small thickness. As a method for joining the heat insulating material to the segment, various construction methods that can be installed on site as a conventional construction method are conceivable, but simply mounting on site is not sufficient in terms of economy and construction period. Also,
It is needless to say that the joint surface is required to have sufficient joint strength and not peel off during segment production, storage, transportation, assembly and service.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、確実な接合
機構を持った厚みが薄くて断熱性に優れた断熱耐火部材
とコンクリートを一体施工することで、接合特性、防火
性が良好で、更に経済性に優れ、大幅な工期短縮が図れ
るトンネル用コンクリートセグメントの断熱耐火部材に
よるによる耐火構造を提供することにある。SUMMARY OF THE INVENTION According to the present invention, a joint characteristic and a fireproof property are obtained by integrally constructing a heat-insulating refractory member having a reliable joint mechanism and having a small thickness and excellent heat insulation property with concrete. It is an object of the present invention to provide a fire resistant structure by using a heat insulating and fire resistant member for a concrete segment for tunnel, which is excellent in cost efficiency, is excellent in economic efficiency, and can significantly shorten the construction period.
【０００４】[0004]
【課題を解決するための手段】本発明の課題の解決は、
引っ掛かりによる落下防止機構を有した突起体を取り付
けた断熱耐火部材の面に未硬化のコンクリートを打設硬
化させて一体化したセグメントであり、また、コンクリ
ートとの接合界面になる裏面に凹凸を形成した断熱耐火
部材に未硬化のコンクリートを打設硬化させて一体化し
たトンネル用コンクリートセグメントの断熱耐火部材に
よる耐火構造である。さらに、これらのセグメントのリ
ング内周方向と同じ曲面を持った断熱耐火部材によるセ
グメントの耐火構造によって達成される。The solution of the problems of the present invention is as follows.
It is a segment that uncured concrete is placed on the surface of the heat-insulating refractory member with a protrusion that has a fall prevention mechanism due to catching, and is hardened and integrated, and unevenness is formed on the back surface that becomes the joint interface with concrete Adiabatic fireproof
A refractory structure comprising a heat insulating and refractory member for a concrete segment for a tunnel, in which uncured concrete is poured and hardened into a member to be integrated. Further, this is achieved by the segment fireproof structure of the heat insulating fireproof member having the same curved surface as the ring inner peripheral direction of these segments.
【０００５】[0005]
【発明の実施の形態】突起体の形状を利用した引っ掛か
りによる落下防止機構としては、軸部に対する引っかか
りの形状がボルトの様なＴ字型、Ｙ型、Ｌ型、逆テーパ
ー型、螺旋或いは波状等のアンカー部材を用いる方法が
考えられるが、落下防止機構を満足する構造であればよ
く、本発明を何ら限定するものではない。また、落下防
止機構を設けた突起体を取り付けるための断熱耐火部材
（以下単に「断熱質部材」という。）に対する構造とし
ては、断熱質部材の裏面にコンクリートを打設し、一体
になったトンネル用セグメントの断熱質部材が、施工後
も脱落しない構造であればよく、例えば、突起体で断熱
質部材に直接埋設される部分の軸に溝や鍔を設けたり、
軸の先端に向けて外側に広がるテーパー等の形状にする
か、間接的に取り付ける構造の一つとして、断熱質部材
側に袋状アンカー部材を埋設し、突起体を螺合或いは固
着する。袋状アンカー部材の脱落を防止するための形状
として、袋状アンカー部材の側周部を先の方に向けて外
側に広がるテーパー形状とする、凹凸を設ける、或いは
袋状アンカー部材の底部をつば形状とする等であればよ
い。その他、断熱質部材成形時に突起体とアンカーが一
体形状のものをセットしてもよい。BEST MODE FOR CARRYING OUT THE INVENTION As a fall prevention mechanism using a shape of a protrusion, a catching shape with respect to a shaft portion is T-shaped like a bolt, Y-shaped, L-shaped, reverse taper type, spiral or corrugated. Although a method using an anchor member such as the above is conceivable, any structure that satisfies the fall prevention mechanism may be used, and the present invention is not limited thereto. Also, a heat-insulating and fire-resistant member for attaching a protrusion provided with a fall prevention mechanism.
As for the structure (hereinafter simply referred to as " heat insulating member" ) , if the structure is made by placing concrete on the back surface of the heat insulating member and the integrated heat insulating member of the tunnel segment does not fall off after construction. Well, for example, by providing a groove or collar on the shaft of the portion that is directly embedded in the heat insulating material by the protrusion,
As one of the indirect attachment structures, a bag-like anchor member is embedded in the heat insulating material side, and the protrusion is screwed or fixed, as one of the structures to be attached to the shaft so as to expand outward toward the tip of the shaft. As a shape for preventing the bag-shaped anchor member from falling off, the side peripheral portion of the bag-shaped anchor member is tapered so as to spread outward toward the tip, unevenness is provided, or the bottom of the bag-shaped anchor member is provided with a brim. Any shape may be used. In addition, the protrusion and the anchor may be integrally formed when the heat insulating material is molded.
【０００６】突起体用材質は、使用目的を満足するもの
であれば、金属、セラミックス等を使用することができ
る。また、金属を使用する場合は、トンネル内環境を考
慮し、必要に応じてメッキ等による防食を施すことも耐
用の面で効果的である。As the material for the protrusion, metal, ceramics or the like can be used as long as it satisfies the purpose of use. In addition, when using a metal, it is also effective in terms of durability to prevent corrosion by plating or the like in consideration of the environment in the tunnel.
【０００７】断熱質部材の裏面で、コンクリートとの接
合界面へ設ける凹凸形状として、例えば、突起状、格子
状、波形形状、或いはこれらの複合形状等で行うことが
好ましく、さらに、突起状等において引っ掛かりによる
断熱質部材の剥落防止効果を得ようとするならば、側面
形状が逆テーパー型、Ｙ型、波形等の形状で設けるとよ
り有効である。これらの形状を採ることで、コンクリー
トと断熱質部材は接触面積の増大によって、接合強度が
向上し、剥離を防止できる。なお、これらの形状は、こ
こに記載された例に限定されるものではない。It is preferable that the concavo-convex shape provided on the joint interface with the concrete on the back surface of the heat insulating material is, for example, a projection shape, a grid shape, a corrugated shape, or a composite shape thereof. In order to obtain the effect of preventing the heat insulating material from peeling off due to being caught, it is more effective to provide the side surface with an inverse tapered shape, a Y shape, a corrugated shape, or the like. By adopting these shapes, the contact area between the concrete and the heat insulating material is increased, so that the joint strength is improved and peeling can be prevented. Note that these shapes are not limited to the examples described here.
【０００８】断熱質部材全体の形状は、必要に応じて平
面形状、或いは曲面形状の何れかを選択することができ
るが、リング内周方向と同じ曲面を持った面形状とする
ものの方が、コンクリート打設用型枠にセットする時の
作業性、寸法精度、仕上がり状態等の点から好ましい。The shape of the entire heat insulating material can be selected from a plane shape and a curved surface shape as required, but the surface shape having the same curved surface as the inner circumferential direction of the ring is more preferable. It is preferable from the standpoints of workability, dimensional accuracy, and finished state when set in a concrete pouring formwork.
【０００９】断熱質部材の材質は、本来の使用目的を満
足するものであればよく、断熱耐火板、珪酸カルシウム
板、ＡＬＣ版等から１種或いはそれ以上から選択するこ
とができるが、本発明者の特願平９−１１４１０１号に
示す「断熱性耐火物」による断熱耐火板が断熱性、容積
安定性、耐熱スポール性、強度等の点から最も好まし
い。前記断熱性耐火物は、セピオライト、ウォラストナ
イト及び補強繊維を含む耐火物中に、アルミナセメント
をＣａＯとして１１〜１５重量部、超微粉非晶質シリカ
を５〜１０重量部、成分中のＮａ2Ｏ及びＫ2Ｏの合量が
９重量％以下である軽量骨材を４〜１２重量部含有する
断熱性耐火物で、補強繊維は、平均繊維長が１００μｍ
〜３ｍｍであるセピオライトを１０〜３０重量部、平均
繊維長が５０〜５００μｍであるウォラストナイトを２
〜３０重量部、及び平均繊維長が０．５〜１０ｍｍであ
る補強繊維を０．５〜２重量部含有することが好まし
く、また、補強繊維はビニロン繊維が好ましい。The material of the heat insulating material may be one that satisfies the original purpose of use, and may be selected from one or more of a heat insulating refractory plate, a calcium silicate plate, an ALC plate and the like. The heat-insulating refractory plate made of "heat-insulating refractory" shown in Japanese Patent Application No. 9-114101 is most preferable in terms of heat insulation, volume stability, heat-resistant spall resistance, strength and the like. The adiabatic refractory material comprises 11 to 15 parts by weight of alumina cement as CaO, 5 to 10 parts by weight of ultrafine amorphous silica, and Na in the composition in a refractory material containing sepiolite, wollastonite and reinforcing fibers. A heat-resistant refractory material containing 4 to 12 parts by weight of a lightweight aggregate having a total content of 2 O and K 2 O of 9% by weight or less, and reinforcing fibers having an average fiber length of 100 μm.
10 to 30 parts by weight of sepiolite having a size of 3 mm, and 2 parts of wollastonite having an average fiber length of 50 to 500 μm.
-30 parts by weight and 0.5 to 2 parts by weight of reinforcing fibers having an average fiber length of 0.5 to 10 mm are preferably contained, and the reinforcing fibers are preferably vinylon fibers.
【００１０】断熱質部材の厚みは、断熱効果、強度、ト
ンネル内空断面確保、軽量性、材料費の点から１０〜５
０ｍｍ、好ましくは２０〜３０ｍｍがよい。The thickness of the heat insulating member is 10 to 5 from the viewpoints of heat insulating effect, strength, securing a cross section in the tunnel, light weight and material cost.
It is 0 mm, preferably 20 to 30 mm.
【００１１】本発明でトンネル用コンクリートセグメン
トの耐火構造に使用される断熱質部材は、機能上常用及
び供用時は勿論のこと自動車火災時における耐火保護の
点から、また、セグメントの製作、貯蔵、運搬、組立時
においても、一体化させた断熱質部材がコンクリートセ
グメントから剥離しないことが要求される。この様に、
断熱質部材をセグメントに確実に一体化させることが肝
要であるが、一体化の方法として、経済的観点からも考
慮するとコンリート打設時に実施することが最も得策と
考えられる。The heat insulating material used in the fire resistant structure of the concrete segment for tunnels according to the present invention is functionally not only in normal use and in service, but also from the viewpoint of fire resistance protection not only when the automobile fires, but also when the segment is manufactured, stored, It is required that the integrated heat insulating material does not separate from the concrete segment even during transportation and assembly. Like this
It is important to surely integrate the heat insulating material into the segment. However, considering the economical method as the integration method, it is considered to be the best practice to implement it at the time of placing the concrete.
【００１２】即ち、接合機構を持たせた断熱質部材を予
め製作し、セグメント製作時において未硬化のコンクリ
ートをその上に打設して一体化した構造とすることが最
適である。接合機構としては、断熱質部材に引っ掛かり
による落下防止機構を有した突起体を設けた構造、或い
は断熱質部材に凹凸を設けた構造がある。That is, it is optimal that a heat insulating material having a joining mechanism is manufactured in advance, and uncured concrete is poured on the segment manufacturing to have an integrated structure. As a joining mechanism, there is a structure in which a protrusion having a fall prevention mechanism due to catching is provided on the heat insulating material, or a structure in which unevenness is provided on the heat insulating material.
【００１３】本発明の耐火構造を得る方法の例として、
先ず、落下防止機構を有した突起体を取り付けた断熱質
部材に、コンリートを打設硬化させ一体化したセグメン
トの製作方法について以下に詳述する。As an example of the method for obtaining the refractory structure of the present invention,
First, a method for producing a segment in which a heat-insulating member having a protrusion having a fall prevention mechanism attached thereto is cast and hardened to form an integral piece will be described in detail below.
【００１４】断熱質部材の成形時に脱落防止機構を有し
た袋状アンカー部材を所定の位置に必要個数セットして
同時成形し、次いでその袋状アンカー部材に落下防止機
構を有した突起体を螺合若しくは固着し、取り付ける方
法、或いは落下防止機構を有したボルト状アンカー部材
を成形時に直接埋設する方法、又は成形した断熱質部材
に落下防止機構を有したネジ状アンカー部材をネジ込む
方法の何れかの方法により、落下防止機構を有した突起
体を取り付けた断熱質部材を得る。At the time of molding the heat insulating material, a required number of bag-shaped anchor members having a drop-out preventing mechanism are set at a predetermined position and simultaneously molded, and then a protrusion having a drop-preventing mechanism is screwed to the bag-shaped anchor member. Either by attaching or fixing and mounting, by directly embedding a bolt-shaped anchor member having a fall prevention mechanism at the time of molding, or by screwing a screw-shaped anchor member having a fall prevention mechanism into the molded heat insulating material. By such a method, a heat insulating material having a protrusion having a fall prevention mechanism attached thereto is obtained.
【００１５】次いで、この断熱質部材をセグメントの内
空側に相当する型枠に断熱質部材の突起体がコンクリー
ト側になる様に敷き並べ、その上にコンリート打設時に
生じる断熱質部材の浮上防止策として鉄筋のかぶり厚み
に相当するスペーサーを適宜設置し、更にスペーサーの
上に加工済み鉄筋を配設する。なお、スペーサーを設け
ない場合は、鉄筋のかぶり厚み分だけ浮かせて突起体に
固定させるか、或いは併用させてもよい。Next, the heat insulating material is laid on a frame corresponding to the inner space side of the segment so that the projections of the heat insulating material are on the concrete side, and the heat insulating material is floated when the concrete is laid. As a preventive measure, appropriately install a spacer corresponding to the cover thickness of the reinforcing bar, and further dispose the processed reinforcing bar on the spacer. When the spacer is not provided, it may be floated by the cover thickness of the reinforcing bar and fixed to the projection, or may be used together.
【００１６】最後に、断熱質部材の上から所定の品質が
得られる様配合された未硬化のコンクリートを流し込
み、その後所定の養生を行う。斯くして、セグメント制
作時に、落下防止機構を有した突起体を介させること
で、断熱質部材がセグメントに確実に一体化した耐火構
造を有するトンネル用コンクリートセグメントを得るこ
とができる。Finally, uncured concrete mixed so as to obtain a predetermined quality is poured from above the heat insulating material, and then a predetermined curing is performed. Thus, during the production of the segment, by interposing the projection having the fall prevention mechanism, it is possible to obtain the concrete segment for tunnel having the fireproof structure in which the heat insulating material is surely integrated with the segment.
【００１７】他の接合方法として、凹凸面を持った断熱
質部材をコンクリートに接合させるセグメントの製作方
法について説明する。As another joining method, a method of manufacturing a segment for joining a heat insulating material having an uneven surface to concrete will be described.
【００１８】断熱質部材を成形する際、先ず所定の凹凸
面の形状を持った上型或いは下型を使用して成形し、こ
の時の面形状がコンクリートとの接合面側に転写された
断熱質部材を得る。When molding a heat insulating material, first, an upper die or a lower die having a predetermined uneven surface shape is used, and the surface shape at this time is transferred to the joint surface side with concrete. Obtain a quality member.
【００１９】次いで、断熱質部材をコンクリート打設用
型枠の内空側に位置する型枠に敷き並べる。この後の工
程は、上述した突起体付きの断熱質部材をコンクリート
に一体化させるセグメントの製作方法と全く同一の手順
で製作すればよく、この方法により、セグメント制作時
に、凹凸面を持った断熱質部材をコンクリートに一体化
した耐火構造を有するトンネル用コンクリートセグメン
トを得ることができる。Next, the heat insulating material is laid on the formwork located on the inner side of the concrete placing formwork. Subsequent steps may be manufactured by the same procedure as the method for manufacturing the segment in which the heat insulating material with protrusions is integrated with concrete as described above. It is possible to obtain a concrete segment for a tunnel having a fireproof structure in which a quality member is integrated with concrete.
【００２０】[0020]
【実施例】以下、本発明の好適な実施例を添付図面に基
づいて詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
【００２１】図１は、本発明のトンネル用コンクリート
セグメントの断熱質部材による耐火構造を示すものであ
る。袋状アンカー部材として、袋状アンカーナット２が
埋設され、これに突起体となるアンカーボルト３が取り
付けられた断熱質部材１を多数枚組み合わせている。４
は断熱質部材１上に設置された鉄筋であり、５は鉄筋４
を所定のかぶり厚みに設定するためのスペーサーで、６
はコンクリートを示す。FIG. 1 shows a fireproof structure of a concrete segment for a tunnel according to the present invention, which uses a heat insulating material. As the bag-shaped anchor member, a bag-shaped anchor nut 2 is embedded, and a large number of heat-insulating members 1 having anchor bolts 3 serving as protrusions attached thereto are combined. Four
Is a rebar installed on the heat insulating member 1, and 5 is a rebar 4
Is a spacer for setting the desired cover thickness
Indicates concrete.
【００２２】図２において、１は断熱質部材を、２は袋
状アンカーナットを示す。袋状アンカーナット２には側
周部に断熱質部材１が脱落しないよう奥に向かって外側
に広がるテーパーが付いているため、断熱質部材１が前
記ナット部から脱落することはない。類似方式として、
袋状アンカーナットの底部につばを付けるとより脱落を
防止できる。In FIG. 2, 1 is a heat insulating material and 2 is a bag-shaped anchor nut. Since the bag-shaped anchor nut 2 has a taper that spreads outward toward the inner side so that the heat insulating material 1 does not drop off at the side peripheral portion, the heat insulating material 1 does not drop from the nut portion. As a similar method,
By attaching a collar to the bottom of the bag-shaped anchor nut, it can be prevented from falling off.
【００２３】図３は、脱落防止機構としてアンカーボル
ト３を用いた例を示す。アンカーボルト３の固定は、ア
ンカーボルト３を袋状アンカーナット２の底部まで螺合
して終点部で固定すればよい。螺合時に、断熱質部材１
が袋状アンカーナット部で部分破壊する程弱い場合に
は、接着剤を袋状アンカーナット２の穴に適量注入した
後、アンカーボルト３を螺合し、所定の深さの位置で固
定するとよい。FIG. 3 shows an example in which the anchor bolt 3 is used as a fall-out preventing mechanism. The anchor bolt 3 may be fixed by screwing the anchor bolt 3 to the bottom of the bag-shaped anchor nut 2 and fixing it at the end point. Heat-insulating member 1 when screwed
If it is weak enough to cause partial destruction at the bag-shaped anchor nut portion, it is advisable to inject an appropriate amount of adhesive into the hole of the bag-shaped anchor nut 2 and then screw the anchor bolt 3 to fix it at a predetermined depth position. .
【００２４】アンカーボルト３の支持強度の点からのか
ぶり厚みは、断熱質部材１の重量が軽くそれ程高い支持
強度を必要としないため、コンリートの最大粗骨材寸法
を考慮した長さを採れば支圧面積としては十分である。The cover thickness from the standpoint of the supporting strength of the anchor bolt 3 is such that the weight of the heat insulating material 1 is light and the supporting strength is not so high. It is a sufficient bearing area.
【００２５】アンカーボルト３の形状は、断熱質部材を
確実に支持できる構造であればよいので、図示してはい
ないが、断熱質部材の形状・重量、鉄筋との位置関係を
考慮し、支持材として有効機能範囲内での改変であれ
ば、例えば寸切りボルト、或いは扁平状頭部ボルト等の
支持構造の金物を用いてもよい。The shape of the anchor bolt 3 may be any structure as long as it can reliably support the heat insulating material. Therefore, although not shown, the anchor bolt 3 is supported in consideration of the shape and weight of the heat insulating material and the positional relationship with the reinforcing bar. As a material, if it is a modification within the effective function range, for example, a shaving bolt, a flat head bolt or the like having a supporting structure may be used.
【００２６】図４は、断熱質部材１の裏面に円柱状突起
体７を設けた例である。FIG. 4 shows an example in which a cylindrical projection 7 is provided on the back surface of the heat insulating material 1.
【００２７】図５は、断熱質部材１の裏面を本体側に狭
くなるくさび形の凹凸面８とした例である。FIG. 5 shows an example in which the back surface of the heat insulating member 1 is a wedge-shaped uneven surface 8 that narrows toward the main body.
【００２８】[0028]
【発明の効果】本発明によれば、厚みが薄くて断熱性に
優れた断熱質部材が確実な接合構造でコンクリート打設
時に一体化されているため、断熱質部材の落下の問題が
なく、よって、トンネル内における自動車火災に対する
セグメントの保護機能を確実に発揮し、且つ、経済的で
工期を大幅に短縮できるトンネル用コンクリートセグメ
ントの耐火構造を提供することができる。EFFECTS OF THE INVENTION According to the present invention, since the heat insulating material having a small thickness and excellent in heat insulating property is integrated with the reliable joining structure during concrete pouring, there is no problem of dropping the heat insulating material. Therefore, it is possible to provide a fireproof structure for a concrete segment for a tunnel, which reliably exhibits the function of protecting the segment from the automobile fire in the tunnel, and is economical and can significantly shorten the construction period.
【００２９】また、本発明の接合構造は、トンネルのみ
ならず、例えば土木・建築用プレキャスト製品への内外
装材等の接合方式としても適用することができる。Further, the joining structure of the present invention can be applied not only to a tunnel but also to a joining method such as an interior / exterior material to a precast product for civil engineering / construction.
【図１】 本発明による、トンネル用コンクリートセグ
メントのリング方向一部破断斜視図である。FIG. 1 is a partially cutaway perspective view in the ring direction of a concrete segment for a tunnel according to the present invention.
【図２】 本発明で、テーパー型袋状アンカーナットを
埋設した曲面型断熱質部材の一部破断斜視図である。FIG. 2 is a partially cutaway perspective view of a curved heat insulating material in which a taper type bag-shaped anchor nut is embedded in the present invention.
【図３】 本発明で、断熱質部材のテーパー型袋状アン
カーナットにアンカーボルトを螺合固定した側断面図で
ある。FIG. 3 is a side sectional view in which an anchor bolt is screwed and fixed to a tapered bag-shaped anchor nut of a heat insulating member in the present invention.
【図４】 本発明で、円柱状突起体を有した曲面形断熱
質部材の斜視図である。FIG. 4 is a perspective view of a curved heat insulating material having a cylindrical protrusion according to the present invention.
【図５】 本発明で、くさび形の凹凸を有した曲面形断
熱質部材の斜視図である。FIG. 5 is a perspective view of a curved heat insulating material having wedge-shaped irregularities according to the present invention.
１．断熱質部材 ２．袋状アンカーナット ３．ア
ンカーボルト
４．鉄筋 ５．スペーサー ６．コンクリート
７．円柱状突起体 ８．くさび形凹凸面1. Heat insulating material 2. Bag-shaped anchor nut 3. Anchor bolt 4. Reinforcing bar 5. Spacer 6. Concrete 7. Cylindrical protrusion 8. Wedge-shaped uneven surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 黒田 浩太郎 千葉県木更津市築地７番地の１ 黒崎窯 業株式会社 不定形事業部 木更津不定 形工場内 (72)発明者 山口 一成 福岡県北九州市八幡西区東浜町１番１号 黒崎窯業株式会社内 (72)発明者 今田 徹 千葉県千葉市美浜区高浜３丁目５番２棟 507号 (72)発明者 深澤 邦男 東京都新宿区百人町三丁目一番五の1204 (56)参考文献 特開 平11−117692（ＪＰ，Ａ) 実開 平６−24099（ＪＰ，Ｕ) 実開 昭59−147799（ＪＰ，Ｕ) 実開 昭62−196297（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 11/08 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kotaro Kuroda Inventor Kotaro Kuroda No. 1 Tsukiji, Kisarazu City, Chiba Prefecture 1 Kurosaki Ceramics Co., Ltd. Amorphous Business Division Kisarazu Irregular Factory (72) Inventor Issei Yamaguchi Yawata Kitakyushu, Fukuoka Prefecture Kurosaki Ceramics Co., Ltd. 1-1 Higashihamacho Nishi-ku (72) Inventor Toru Imada 3-5-2 Takahama, Mihama-ku, Chiba, Chiba Prefecture 507 (72) Kunio Fukasawa 3-chome, Hyakunin-cho, Shinjuku-ku, Tokyo No. 5 1204 (56) Reference Japanese Unexamined Patent Publication No. 11-117692 (JP, A) Actual Opening 6-24099 (JP, U) Actual Opening 59-147799 (JP, U) Actual Opening 62-196297 (JP , U) (58) Fields investigated (Int.Cl. 7 , DB name) E21D 11/08
Claims (3)
火構造において、セグメントを製作する際、引っ掛かり
による落下防止機構を有した突起体を取り付けた断熱耐
火部材の面に未硬化のコンクリートを打設硬化させ一体
化したトンネル用コンクリートセグメントの断熱耐火部
材による耐火構造。1. A fireproof structure for a concrete segment for a tunnel, which is provided with a heat-resistant structure having a projection having a mechanism for preventing a drop due to being caught when the segment is manufactured.
Heat-resistant and fire-resistant part of concrete segment for tunnel which is made by uncured concrete is poured and hardened on the surface of fire member.
Fireproof structure made of wood .
火構造において、コンクリートとの接合界面である裏面
に凹凸を形成した断熱耐火部材に未硬化のコンクリート
を打設硬化させ一体化したトンネル用コンクリートセグ
メントの断熱耐火部材による耐火構造。2. In a fireproof structure of a concrete segment for a tunnel, an adiabatic fireproof of a concrete segment for a tunnel which is formed by uncured concrete is cast and hardened on an adiabatic fireproof member having a concavo-convex surface which is a joint interface with concrete. Fireproof structure with members .
グ内周方向の曲面と同じ曲面を持っていることを特徴と
する請求項１又は２記載のトンネル用コンクリートセグ
メントの断熱耐火部材による耐火構造。3. The heat-insulating refractory member has a segmental phosphorus shape.
The fire resistant structure of the heat insulating and fire resistant member for a concrete segment for tunnel according to claim 1 or 2, wherein the fire resistant structure has the same curved surface as the inner circumferential surface .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27198598A JP3490907B2 (en) | 1998-09-25 | 1998-09-25 | Fire-resistant structure made of heat-insulating fire-resistant members of concrete segments for tunnels. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27198598A JP3490907B2 (en) | 1998-09-25 | 1998-09-25 | Fire-resistant structure made of heat-insulating fire-resistant members of concrete segments for tunnels. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000096995A JP2000096995A (en) | 2000-04-04 |
| JP3490907B2 true JP3490907B2 (en) | 2004-01-26 |
Family
ID=17507551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27198598A Expired - Fee Related JP3490907B2 (en) | 1998-09-25 | 1998-09-25 | Fire-resistant structure made of heat-insulating fire-resistant members of concrete segments for tunnels. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3490907B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132247A (en) * | 2004-11-09 | 2006-05-25 | Kfc Ltd | Segment with fire-resistive material and its manufacturing method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357098A (en) * | 2001-05-31 | 2002-12-13 | Kajima Corp | Fire-resistant heat-resisting structure |
| JP3933416B2 (en) * | 2001-06-19 | 2007-06-20 | 株式会社クボタ | Tunnel segment |
| JP3549503B2 (en) * | 2001-07-24 | 2004-08-04 | 株式会社ケー・エフ・シー | Tunnel lining segment and method of manufacturing the same |
| JP3901486B2 (en) * | 2001-10-17 | 2007-04-04 | 鹿島建設株式会社 | Fireproof and heat resistant concrete structure |
| JP4830291B2 (en) * | 2004-12-01 | 2011-12-07 | 株式会社大林組 | Refractory concrete members and refractory segment members |
| JP2007039924A (en) * | 2005-08-02 | 2007-02-15 | Kajima Corp | Fireproof panel |
| JP4641463B2 (en) * | 2005-08-02 | 2011-03-02 | 鹿島建設株式会社 | Fireproof panel |
| JP4636995B2 (en) * | 2005-10-26 | 2011-02-23 | 鹿島建設株式会社 | Composite concrete structure |
| CN106761817B (en) * | 2016-11-28 | 2020-01-31 | 同济大学 | Shield tunnel self-interacting fire prevention lining segment structure |
-
1998
- 1998-09-25 JP JP27198598A patent/JP3490907B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132247A (en) * | 2004-11-09 | 2006-05-25 | Kfc Ltd | Segment with fire-resistive material and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000096995A (en) | 2000-04-04 |
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