200933008 九、發明說明： 【發明所屬之技術領域】 本發明係關於防火複合鋼板，尤指一種於上層鋼板設 結合部，以為下層鋼板結合槽部結合而固定之，如此，以 利用上層鋼板對下層鋼板所產生之拉引力量，讓較接近火 場高溫之下層鋼架不易變形塌陷之防火複合鋼板創新。 • 【先前技術】 . 按由金屬鋼承板組成之廠房或房屋，如台灣新型專利 公告第5 7 5 0 3 6號：具較長跨距之複層鋼承板。第一 0 種習知者係由第一鋼承板及第二鋼層板組成，於第一鋼承 板一面藉由模具滾壓出複數個等間距且呈U形之肋體，肋 體下端設嵌合元件以束合開口，使開口緊密貼合；及第二 鋼承板彎折成矩形波浪板體，使波浪板體透過固定元件鎖 固於第一鋼承板之肋體頂面上，以增強樓板淨高及複層鋼 承板之斷面強度，進而增長跨距，於施工安裝於樓層時， 不需次樑之支撐，故簡化施工之過程，並減少施工之成本。 又如台灣新型專利公告第5 7 6 8 8 4號：組合鋼承 板及其施工方法。第二種習知鋼承板，設有平底鋼承板， Q 平底鋼承板一側設平底，及另一側設有數個凸部及凹部， 該平底鋼承板係可由該平底側連接至少一鋼樑；及於平底 鋼承板之各凹部設玻璃棉，及再於平底鋼承板之各凸部螺 固結合浪形鋼，以使該平底鋼承板及浪形鋼板組成一組合 鋼承板。 次如台灣新型專利公告第430706號：Z型樓層 板（D-Deck)之新施工構造與方法。第三種習知之樓層板 (D-Deck)包含樓層板，相鄰樓層板可以利用結合面互相結 合，及該樓層板設於鋼樑，且在樓層板内填設有隔音、隔 熱、耐燃之玻璃棉，而後再與鍍辞鋼板即屋頂以自攻螺絲 200933008 鎖於樓層板之結合面之位置即可達到屋頂施工之功能。 上述之三種習知鋼承板，利用鋼層板之特性以組成金 屬鋼板之結構，其共同之缺點為：當前述各習知者構築而 成之金屬建築，遭遇火警時，只能藉由鋼承板之結構維持 支樓之功能’但因火場局溫足以讓鋼成板變形塌陷，危害 人員安全，且使火災救援極不方便。 : 為此，本發明者，針對前揭習知者之缺點加以研究改 . 進，於此之前並發明專利第I 2 6 0 7 7 7號：防火金屬 鋼板結構（一），該案係利用連結元件連結上、下層鋼架， 0 以使上層鋼架對下層鋼架產生拉引力量，確保下層鋼架可 承受火警高溫，不易變形，避免建築物塌陷造成危害，並 於上層鋼板與下層鋼板之間設防火層，且形成防火區隔 區，利用防火層之防火功能，及於前述防火區隔區並形成 部份之空氣空間，增加防火效果，以符合國家標準之防火 時效。然就不同之鋼板之結構，會有不同之結構需求，因 此，本發明者，乃再發明本案。 【發明内容】 ' 本發明之目的，乃於利用下層鋼板設置有結合部，並 於下層鋼板設結合槽，如此，利用上層鋼板之結合槽以與 下層鋼板之結合部充分結合，使得上層鋼板對下層鋼板產 生拉引力量，當下層鋼架承受火場高溫時，不易變形塌 陷，確保建築物安全，更符合國家標準之防火時效。 本發明之特點有： 本發明之防火複合鋼板，係利用上層鋼板設結合槽， 而於下層鋼板設結合部，如此，利用上層鋼板之結合槽與 下層鋼板之結合部結合固設，即可令上層鋼板對下層鋼板 產生拉引力量。 本發明之防火複合鋼板，其中上層鋼板及下層鋼板之 200933008 間並設防火層，以形成防火區隔區，增加防火效果。 本發明之防火複合鋼板’其中於下層鋼板之結合部並 可设固定架，以讓上層鋼板與下層鋼板之間的結合更強 化’確保上、下層鋼板間之結合效果。 【實施方式】 如此，為使貴審查員可充份了解本發明，茲依附圖 ； 式解說如下： 如圖1所示，為本發明之防火複合鋼板實施例（一）， 本實施例（一），包含： 0 鋼板1，设上層鋼板10及下層鋼板1 1，鋼板形狀 可以為浪形；或琉璃瓦形；或平板形狀；或隱藏狀；或任 意形狀皆可。上層鋼板1 0設結合槽丄〇 〇，結合槽工〇 0必須設有凹入部1 〇1。又於下層鋼板i i則設結合部 1 10 ’結合部1 1 〇設水平面1 1 1，及自水平面之兩 側設向下之斜向邊1 1 2 ’以形成結合角部1 1 3，如此 得於前述下層鋼板11結合部11〇之水平面11]耠 設一固定架2。 - 固定架2設水平面2 0，於水平面2 0兩侧設彎折部 .❹ 2 1 ’於彎折部2 1外侧設向下延伸部2 2，且因為具有 彎折部2 1 ’得以讓固定架2兩側之延伸部2 2具備適當 的強度。當前述下層鋼板11之結合部11〇與前述上層 鋼板1 0之結合槽1 〇 〇互相結合後，得以利用前述固定 架2兩侧之延伸部2 2卡固前述上層鋼板1 〇之凹入部 1 0 1 ’即可將上層鋼板1 〇與下層鋼板1 1充分結合。 防火層3，設於前述上層鋼板1 〇與下層鋼板1 1之 間，以產生防火區隔，以延遲上層鋼板1 〇直接接觸火源 之時間，使得上層鋼板1 0得以拉引下層鋼板1 1之時間 更長，下層鋼板1 1就較不易塌陷，足以讓建築物内之人 200933008 員撤離火場’減少火災之損害，更符合國家標準之防火時 效。 又’如圖2所示，為本發明之防火複合鋼板實施例 (二） ，本實施例（二）’係依據前述實施例（一）衍生 而得’其包含實施例（一）之鋼板1、固定架2及防火層 3。如此，得以利用上層鋼板1 〇之上表面被灌填混凝土 ; 6後形成建築物之地板，讓本發明被廣泛運用。 另’如圖3所示’為本發明之防火複合鋼板實施例 (三） ，本實施例（三），包含： 〇 鋼板1’設上層鋼板10及下層鋼板11，鋼板形狀 可以為浪形；或琉璃瓦形；或平板形狀；或隱藏狀；或任 意形狀皆可。上層鋼板1 〇設結合槽i 0 〇，結合槽工〇 0必須没有内凹入部1〇 2及外凹入部1 〇 3。又於下層 鋼板1 1則設結合部1 1 〇 ’結合部1 1 〇設水平面1 1 1，及自水平面1 1 1之兩側設向下之斜向邊1 1 2，以 形成結合角部1 1 3，當前述下層鋼板1 1之結合部工工 0與前述上層鋼板1〇之結合槽i 〇 〇互相結合後，得以 ' 利用前述下層鋼板11之結合角部113與上層鋼板1 〇 0之内凹入部1 〇 2卡合，即可將上層鋼板1 0與下層鋼 板11充分結合。 上蓋4，為任意开> 狀，且設有向内彎折部4 〇，如此， 得利用該上蓋4之向内彎折部4 〇與前述上層鋼板工〇 =凹入部1 0 3結合，即可將螺栓隱藏，形成隱藏式防火 複合鋼板。 防火層3，設於前述上層鋼板1 〇與下層鋼板1 1之 間，以產生防火區隔，以延遲上層鋼板i 〇直接接觸火源 之時間，使得上層鋼板1〇得以拉引下層鋼板i i之時間 更長，下層鋼板1 1就較不易塌陷，足以讓建築物内之人 200933008 員撤離火場，減少火災之損害，更符合國家標準之防火時 效。 再，如圖4所示，為本發明之防火複合鋼板實施例 (四） ，本實施例（四），包含： 鋼板1，設上層鋼板10及下層鋼板11，鋼板形狀 可以為浪形；或琉璃瓦形；或平板形狀；或隱藏狀；或任 / 意形狀皆可。上層鋼板10設結合槽1〇 〇，結合槽1 0 - 0必須設有凹入部1 01。又於下層鋼板1 1則設結合部 1 1 ◦’結合部1 1 0設水平面1 1 1，及自水平面之兩 ❹側設向下之斜向邊1 1 2 ’以形成結合角部1 1 3，得以 利用前述下層鋼板11之結合角部113與上層鋼板1 〇之凹入部101卡合，即可將上層鋼板10與下層鋼板 11充分結合。 又於兩相鄰互相結合之上層鋼板1 0，其兩側之固設 則是設置有堆高架5，該堆高架位於上層鋼板1 〇與下層 鋼板之間’且以螺栓栓固，即可讓本發明之複合鋼板之於 適當間隔較為突出，增加建築物之美感。 ' 次，如圖5所示’為本發明之防火複合鋼板實施例 (五） ，本實施例（五），包含： 鋼板1，設上層鋼板10及下層鋼板i i，鋼板形狀 :以為浪形；或琉璃瓦形；或平板形狀；或隱藏狀；或任 意形狀皆可。上層鋼板i 0設結合槽丄〇 〇。又於下層鋼 板1 1則設結合部1 1 〇。且，得以利用上層鋼板丄〇之 上表面被灌填混凝土後形成建築物之地板，讓本發明被廣 泛運用。 ' 防火層3 ’設於前述上層鋼板1 〇與下層鋼板1 1之 間，以產生防火區隔，以延遲上層鋼板丄〇直接接觸火源 之時間，使得上層鋼板1 〇得以拉引下層鋼板1 1之時間 200933008 更長，下層鋼板11就較不易塌陷，足以讓建築物内之人 員撤離火場’減少火災之損害，更符合國家標準之防火時 - 效。 再又如圖6及7所示’為本發明之防火複合鋼板實施 例（六）’本實施例（六），包含： 鋼板1’設上層鋼板10及下層鋼板11，鋼板形狀 ， 可以為浪形；或琉璃瓦形；或平板形狀；或隱藏狀；或任 : 思开）狀皆可。上層鋼板1 0設結合槽1 0 0。又於下層鋼 板1 1則設結合部1 1 〇。裝飾鋼板i 2，設於前述上層 ❹鋼板10之上方，得以利用螺栓依據將裝飾鋼板丄2、上 層鋼板10及下層鋼板1^栓固而充分結合。 防火層3，設於前述上層鋼板丄〇與下層鋼板丄丄之 間^以產生防火區隔，以延遲上層鋼板丄〇直接接觸火源 之、間，使得上層鋼板1 〇得以拉引下層鋼板工1之時間 更長，下層鋼板11就較不易塌陷，足以讓建築物内之人 =撤離火場，減少火災之損害，更符合國家標準之防火時 句令赞明之防火複合 〇 (七）’本實施例（七），包含. 琉璃=1二下層鋼板11，鋼板形狀可以為浪形；或 下形狀；或隱藏狀；或任意形狀皆可。於 屬鋼板11上方則舖設防水層 外飾層8，外飾層8上方得為：二：防；層7上方再設 栽種植物等，更具備綠色環保之效果。 * 证、芦本發明利用上層鋼板10充分拉引下層錮柘# 延遲上層鋼板接觸火源之時 τ層鋼板，並 與時間被延長，讓吏于下層鋼架塌陷之機會 造成之人=財員迅速撤離，減少火災所 財產之㈣，符合國家標準之防火時效。 200933008 【圖式簡單說明】 圖1是本發明實施例（—）之剖視圖。 . 圖2是本發明實施例（二）之剖視圖。 圖3是本發明實施例（三）之剖視圖。 圖4是本發明實施例（四）之剖視圖。 圖5是本發明實施例（五）之剖視圖。 : 圖6是本發明實施例（六）之剖視圖。 圖*7是圖6之A — A剖視圖。 圖8是本發明實施例（七）之剖視圖。 ❹ 【主要元件符號說明】 鋼板1、上層鋼板1 0、結合槽1 00、凹入部1 〇 1、内凹入部1 〇 2、外凹入部1 〇 3、下層鋼板1 1、 結合部1 1 0、水平面1 1 1、斜向邊1 .1 2、結合角部 113 固定架2、水平面2 0、彎折部2 1、延伸部2 2、 防火層3、上蓋4、彎折部4 0、堆高架5、混凝土 6、 防水層7、外飾層8200933008 IX. Description of the invention: [Technical field of the invention] The present invention relates to a fireproof composite steel plate, in particular to a joint portion of an upper steel plate, which is fixed by combining the lower steel plate with the groove portion, so as to utilize the upper steel plate to the lower layer. The pulling force generated by the steel plate makes the fireproof composite steel plate which is close to the high temperature of the fire field and is not easy to deform and collapse. • [Prior Art]. Plant or house consisting of metal steel plates, such as Taiwan's new patent announcement No. 5 7 5 0 3 6: multi-layer steel plate with longer span. The first 0 conventional members are composed of a first steel carrier plate and a second steel laminate, and a plurality of equally spaced U-shaped ribs are rolled on the first steel carrier plate by a die, and the lower end of the rib body a fitting member is provided to close the opening to make the opening closely fit; and the second steel plate is bent into a rectangular wave plate body, so that the wave plate body is fixed to the top surface of the rib body of the first steel plate through the fixing member In order to enhance the net height of the slab and the section strength of the multi-layer steel slab, and thus increase the span, when the construction is installed on the floor, the support of the secondary beam is not required, so the construction process is simplified and the construction cost is reduced. Another example is Taiwan's new patent announcement No. 5 7 6 8 8 4: composite steel deck and its construction method. The second conventional steel carrier plate is provided with a flat bottom steel carrier plate, the Q flat bottom steel carrier plate is provided with a flat bottom on one side, and the other side is provided with a plurality of convex portions and concave portions, and the flat bottom steel support plate can be connected to at least one steel from the flat bottom side Girder; and glass wool in each concave portion of the flat bottom steel plate, and then screwed together with the convex portions of the flat bottom steel plate to make the flat steel plate and the wave plate form a combined steel plate . For example, Taiwan's new patent announcement No. 430706: New construction structure and method of Z-type floorboard (D-Deck). The third conventional floor panel (D-Deck) comprises a floor panel, adjacent floor panels can be combined with each other by using a joint surface, and the floor panel is set on a steel beam, and the floor panel is filled with sound insulation, heat insulation and flame resistance. The glass wool, and then the plated steel plate, that is, the roof with the self-tapping screws 200933008 locked to the joint surface of the floor board can achieve the function of roof construction. The above-mentioned three kinds of conventional steel slabs use the characteristics of the steel slab to form the structure of the metal steel plate. The common disadvantage is that when the metal buildings constructed by the above-mentioned various conventional people encounter fire, they can only use the steel plate. The structure maintains the function of the branch building. However, due to the temperature of the fire field, the steel plate is deformed and collapsed, which is harmful to personnel safety and makes fire rescue extremely inconvenient. For this reason, the inventors have studied and corrected the shortcomings of the prior disclosure, and before that, and invented the patent No. I 2 6 0 7 7 7: fireproof metal steel plate structure (1), the case is utilized The connecting element is connected to the upper and lower steel frames, so that the upper steel frame can draw the upper steel frame to ensure that the lower steel frame can withstand the high temperature of the fire, is not easy to be deformed, avoids the damage caused by the collapse of the building, and is in the upper and lower steel plates. There is a fireproof layer between them, and a fire compartment is formed, and the fireproof function of the fireproof layer is utilized, and a part of the air space is formed in the fireproof area partition area to increase the fireproof effect to meet the national standard fire prevention and aging. However, the structure of the different steel plates has different structural requirements, and therefore, the inventors have invented the case. SUMMARY OF THE INVENTION The object of the present invention is to provide a joint portion by using a lower steel sheet and a joint groove for the lower steel sheet. Thus, the joint groove of the upper steel sheet is sufficiently combined with the joint portion of the lower steel sheet to make the upper steel sheet pair The lower steel plate produces the pulling force. When the lower steel frame is subjected to the high temperature of the fire field, it is not easy to deform and collapse, ensuring the safety of the building and more in line with the national standard fire prevention and aging. The fireproof composite steel plate of the present invention is characterized in that the upper steel plate is provided with a joint groove, and the lower steel plate is provided with a joint portion, so that the joint between the joint groove of the upper steel plate and the lower steel plate can be combined and fixed. The upper steel plate exerts a pulling force on the lower steel plate. The fireproof composite steel plate of the invention has a fireproof layer between the upper steel plate and the lower steel plate of 200933008 to form a fireproof zone partition zone, thereby increasing the fireproof effect. In the fire-resistant composite steel sheet of the present invention, a joint may be provided at the joint portion of the lower steel sheet to strengthen the joint between the upper steel sheet and the lower steel sheet to ensure the bonding effect between the upper and lower steel sheets. [Embodiment] In this way, in order to enable the examiner to fully understand the present invention, the following formula is illustrated as follows: As shown in Fig. 1, the fire-resistant composite steel plate embodiment (1) of the present invention, the present embodiment (a ), including: 0 steel plate 1, upper steel plate 10 and lower steel plate 1 1, steel plate shape may be wave shape; or glazed tile shape; or flat plate shape; or hidden shape; or any shape may be used. The upper steel plate 10 is provided with a joint groove 〇, and the joint groove 必须 0 must be provided with a concave portion 1 〇1. Further, in the lower steel sheet ii, the joint portion 1 10 'the joint portion 1 1 is provided with the horizontal plane 1 1 1 , and the downward oblique side 1 1 2 ' is provided from both sides of the horizontal plane to form the joint corner portion 1 1 3, A fixing frame 2 is disposed on the horizontal surface 11 of the joint portion 11 of the lower steel sheet 11. - The fixing frame 2 is provided with a horizontal plane 20, and a bent portion is provided on both sides of the horizontal plane 20. ❹ 2 1 ' is provided with a downward extending portion 2 2 outside the bent portion 2 1 , and because the bent portion 2 1 ' is allowed The extensions 2 2 on both sides of the holder 2 have appropriate strength. After the joint portion 11〇 of the lower steel sheet 11 and the joint groove 1〇〇 of the upper steel sheet 10 are joined to each other, the recessed portion 1 of the upper steel sheet 1 is clamped by the extension portion 2 2 on both sides of the fixing frame 2 0 1 'The upper steel plate 1 即可 can be fully combined with the lower steel plate 1 1 . The fireproof layer 3 is disposed between the first upper steel plate 1 and the lower steel plate 1 1 to generate a fireproof partition to delay the time when the upper steel plate 1 is directly in contact with the fire source, so that the upper steel plate 10 can pull the lower steel plate 1 1 For a longer period of time, the lower steel plate 11 is less likely to collapse, enough to allow the people in the building to evacuate the fire from the 200933008' to reduce the damage caused by fire, and more in line with national standards for fire protection. Further, as shown in FIG. 2, the fire-resistant composite steel plate according to the present invention (II), the present embodiment (2) is derived from the foregoing embodiment (1), and the steel plate 1 including the embodiment (1) , fixing frame 2 and fireproof layer 3. In this way, the upper surface of the upper steel plate can be filled with concrete; after 6 the floor of the building is formed, and the invention is widely used. In addition, as shown in FIG. 3, the fireproof composite steel plate according to the present invention (3), the third embodiment of the present invention includes: the steel plate 1' is provided with an upper steel plate 10 and a lower steel plate 11, and the shape of the steel plate may be a wave shape; Or glazed tile shape; or flat plate shape; or hidden shape; or any shape. The upper steel plate 1 is provided with a coupling groove i 0 〇, and the coupling groove work 0 must have no inner concave portion 1 〇 2 and outer concave portion 1 〇 3. Further, in the lower steel plate 1 1 , a joint portion 1 1 〇 ' joint portion 1 1 is provided with a horizontal plane 1 1 1 , and a downward oblique side 1 1 2 is provided on both sides of the water level plane 1 1 1 to form a joint corner portion. 1 1 3, when the joint portion 0 of the lower steel sheet 11 and the joint groove i of the upper steel sheet 1 are combined with each other, the joint corner portion 113 of the lower steel sheet 11 and the upper steel sheet 1 〇 0 are used. When the concave portion 1 〇 2 is engaged, the upper steel plate 10 and the lower steel plate 11 can be sufficiently joined. The upper cover 4 is arbitrarily opened and has an inwardly bent portion 4 〇. Thus, the inwardly bent portion 4 〇 of the upper cover 4 is combined with the upper steel plate work 凹=recessed portion 1 0 3 . The bolts can be hidden to form a hidden fireproof composite steel plate. The fireproof layer 3 is disposed between the first upper steel plate 1 and the lower steel plate 1 1 to generate a fireproof partition to delay the time when the upper steel plate is directly in contact with the fire source, so that the upper steel plate can pull the lower steel plate ii For a longer period of time, the lower steel plate 1 1 is less likely to collapse, enough to allow the people in the building to evacuate the fire from the 200933008, reducing the damage of the fire and more in line with national standards for fire protection. Further, as shown in FIG. 4, the fireproof composite steel plate embodiment (4) of the present invention, the fourth embodiment, includes: a steel plate 1, an upper steel plate 10 and a lower steel plate 11, the shape of the steel plate may be a wave shape; or Glazed tile shape; or flat plate shape; or hidden shape; or any / shape can be. The upper steel plate 10 is provided with a coupling groove 1〇, and the coupling groove 10 0 must be provided with a concave portion 101. Further, in the lower steel plate 1 1 , a joint portion 1 1 ◦ ' joint portion 1 1 0 is provided with a horizontal plane 1 1 1 , and two sides of the horizontal plane are provided with a downward oblique side 1 1 2 ' to form a joint corner portion 1 1 3. The upper steel plate 10 and the lower steel plate 11 can be sufficiently joined by the engagement of the joint corner portion 113 of the lower steel sheet 11 with the concave portion 101 of the upper steel sheet 1 . Further, the two adjacent steel plates 10 are joined to each other, and the two sides of the steel plate are fixedly disposed with a stack of elevated frames 5, which are located between the upper steel plate and the lower steel plate and are bolted to allow The composite steel sheets of the present invention are more prominent at appropriate intervals, increasing the aesthetics of the building. ' times, as shown in FIG. 5' is the fire-resistant composite steel plate embodiment (5) of the present invention, and the present embodiment (5) includes: a steel plate 1, an upper steel plate 10 and a lower steel plate ii, a steel plate shape: a wave shape; Or glazed tile shape; or flat plate shape; or hidden shape; or any shape. The upper steel plate i 0 is provided with a joint groove 〇. Further, the lower steel plate 1 1 is provided with a joint portion 1 1 〇. Further, the present invention can be widely applied by utilizing the upper surface of the upper steel sheet to be filled with concrete to form a floor of the building. 'Fire-retardant layer 3' is set between the above-mentioned upper steel plate 1 〇 and the lower steel plate 1 1 to generate a fire-proof zone to delay the time when the upper steel plate 丄〇 directly contacts the fire source, so that the upper steel plate 1 〇 can pull the lower steel plate 1 1 time 200933008 Longer, the lower steel plate 11 is less likely to collapse, enough to allow personnel in the building to evacuate the fire site 'to reduce the damage of fire, more in line with national standards for fire protection - effectiveness. Further, as shown in FIGS. 6 and 7, the present embodiment (six) of the fire-resistant composite steel plate of the present invention (six) includes: the steel plate 1' is provided with an upper steel plate 10 and a lower steel plate 11, and the shape of the steel plate may be a wave. Shape; or glazed tile shape; or flat shape; or hidden shape; or any: think open). The upper steel plate 10 is provided with a coupling groove 100. Further, the lower steel plate 1 1 is provided with a joint portion 1 1 〇. The decorative steel plate i 2 is disposed above the upper gusset steel plate 10, and is sufficiently bonded by bolting the decorative steel slab 2, the upper steel plate 10, and the lower steel plate. The fireproof layer 3 is disposed between the upper steel plate and the lower steel plate to generate a fireproof partition to delay the direct contact between the upper steel plate and the fire source, so that the upper steel plate can pull the lower steel plate. 1 time is longer, the lower steel plate 11 is less likely to collapse, enough for the people in the building to = evacuate the fire, reduce the damage of the fire, more in line with the national standard fire prevention statement, praise the fire composite 七 (seven) 'this Embodiment (7), comprising: glaze = 2 lower layer steel plate 11, the shape of the steel plate may be a wave shape; or a lower shape; or a hidden shape; or any shape may be used. Above the steel plate 11, a waterproof layer outer layer 8 is laid, and the outer layer 8 is provided with two: anti-proof; the plant 7 is planted above the layer 7, and has a green environmental protection effect. * The certificate and the invention of the ruin use the upper steel plate 10 to fully pull the lower layer 锢柘# to delay the upper layer steel plate to contact the fire source when the τ layer steel plate is extended with time, so that the chance of collapse of the lower steel frame is caused by the person Rapid evacuation, reducing the property of the fire (4), in line with national standards of fire protection. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an embodiment (-) of the present invention. Figure 2 is a cross-sectional view showing the second embodiment of the present invention. Figure 3 is a cross-sectional view showing the third embodiment of the present invention. Figure 4 is a cross-sectional view showing the fourth embodiment of the present invention. Figure 5 is a cross-sectional view showing the fifth embodiment of the present invention. Fig. 6 is a cross-sectional view showing the sixth embodiment of the present invention. Figure 7 is a cross-sectional view taken along line A - A of Figure 6. Figure 8 is a cross-sectional view showing the seventh embodiment of the present invention. ❹ [Explanation of main component symbols] Steel plate 1, upper steel plate 10, coupling groove 100, concave portion 1 〇 1, inner concave portion 1 〇 2, outer concave portion 1 〇 3, lower steel plate 1 1 , joint portion 1 1 0 , water level 1 1 1 , oblique side 1 .1 2, joint corner 113 fixed frame 2, horizontal plane 20, bent portion 2, extension 2, fire barrier 3, upper cover 4, bent portion 40, Stack of elevated 5, concrete 6, waterproof layer 7, exterior layer 8
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