M409269 五、新型說明： 【新型所屬之技術領域】 本新型是有關於-種束制裝置，特別是指一種免解式 的束制裝置。 【先前技術】 這幾十年來，世界各地發生相當多次的大地震，造成 房屋倒塌導致無數的經濟損失。台灣處於板塊交接帶全 年地震頻繁，因此開啟發展抗震建築的技術，其中，同心 斜樓架㈣特點是能以經濟的方式加強側向勁度，且利用 斜撐方式傳遞剪力，並可有效地吸收地震能量。 而挫屈束制支撐結構是同心斜稱架構系統的一種，其 遲滞迴圈表現相當厚實及飽滿，能有效地抵消地震波的能 量且具有高韌性、高強度及高抵消能的優點。一般挫屈束 制支撐結構的軸力構件被固定包覆於圍束構件之中所以 *玄軸力構件無法直帛被檢視，必須破壞圍束構件才能確切 轴力構件是否需要進行更換。然而，一旦圍束構件被破: ’挫屈束制支撐結構整體都不得不替換。 因此，參閱圖i與圖2,中華民國公告第57〇〇83號專 利提供-種可拆解式㈣拘杨性斜# 9，提供檢視者拆解 圍束構件的管道，而無須破壞圍束構件。可拆解式挫屈拘 束勒性斜撐9固定連接於建築物，並包含—具有雙對稱斷 面性質之長條狀軸力構件91與一設置於該軸力構件W周 圍之可拆解式圍束構件92。該可拆解式圍束構件92可提^ 該軸力構件91抵消地震能量的能力。 问 3 可拆解式挫屈拘束韌性斜撐9 93盥n 牙之軸力構件91係以鋼板 與一塊加勁鋼板94焊接 .〇 ^ ^ 噼邛95與核心段96之斷 面呈十子型。基於方便拆解的原理， 宝荆徒供複數個截面呈U 子型的鋼夾97與多數個螺栓98， 伴的+ s 將軸力構件91及圍束構 件92夾置固定其中。當地震 ^ 0 便工作人員無法直接由 該控屈拘束韌性斜撐9的外觀檢相 拣知… 必須藉由拆除牆面及 拆卸螺栓98及鋼夹97而卸下圍蚩描4 _ a ^ ^ 圓束構件92，藉此檢視確認 疋否需更換軸力構件91。秋而，如+ 4 阁土 …、而如此之設計雖然便於拆卸 【新型内容】 圍束構件92，但仍費工費時。 因此，本新型之目的，即在提供一種可透過牆面開設 =留孔即能直接檢視-轴力件之挂屈程度的免解式束制装 置0 _於疋，一種免解式束制裝置適合與建築物的結合板配 合固定，該免解式束制裝置包含一轴力件、複數個圍束單 元、複數個角鋼及複數個固定單元。 _八該軸力件沿第一方向延伸，該軸力件具有一中央段及 人刀別由該中央段相反二端一體成形地延伸且與對應之結 合板固定的組接段。 各該圍束單元包括一同樣沿第一方向延伸且設置於該 轴力件表面之保護件，兩兩保護件將該軸力件夾設其中， 並使該轴力件的側緣外露。 各该角鋼沿第一方向延伸，兩兩角鋼成對且隔著該軸 力件的側緣夹設該軸力件的兩保護件上。 M409269 各該固定單元沿該第一方向，相間隔設置於成對的角 鋼間，夹設該軸力件的兩保護件及該成對的角鋼。 旦較佳地，該軸力件截面呈一字型，前述圍束單元的數 量為二，各該保護件分別設置於該軸力件上、下表面且截 面呈矩形之中空鋼管。值得—提的是，該保護件亦可以有 多種的變化，如:各該保護件截面呈τ字型且具有一底壁及 -由底壁往遠離底壁之方向延伸的直立壁，該二保護件分 別以底壁頂抵姉力件上 '下表面^各該保護件也可以是 截面呈U子型且具有一底壁及二分別由底壁左 '右側往遠 離底壁之方向延伸的直立壁，該二保護件分別以底壁頂抵 該軸力件上、下表面。該軸力件更可以是截面呈十字型， 並形成四個缺口，前述圍束單元的數量為四，各該保護件 為四個分別置放於料缺口且截面呈矩型並頂抵該轴力件 之中空鋼管。 較佳地，各該個圍束單元還包括一設置於各該保護件 之内的束制件’該束制件為H於該保護件内的混凝土或 由該保護件内表面向内突伸並抵頂於該軸力件的複數鋼板 〇 較佳地1¾等角鋼，兩兩成對且隔著該轴力件的側緣 夾設該轴力件的兩保護件上。 較佳地，該固定單元為相間隔填置於成對角鋼間的焊 料亦可以疋穿叹於成對角鋼間的螺絲，且該固定單元還包 含括複數個間隔設置於成對角鋼之間的補強件。 本新型之功效在於經過數次地震之後，無須拆除該等 5 保護件即可直接檢視該軸力件是否有挫曲或斷裂及其他殘 餘永久變形而影響建築物結構上的安全，如此一來，即可 有效避免不必要的施工。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之四個較佳實施例的詳細說明中，將可 清楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 明内容中’類似的元件是以相同的編號來表示。 本新型免解式束制裝置之第一較佳實施例如圖3與圖4 ，该裝置適合與建築物5的結合板6配合固定且設置於具 有預留孔的牆壁内（圖未式該免解式束制裝置包含一軸力 件1、二個圍束單元2、四個角鋼3與複數個固定單元4。 在本實施例’該轴力件1沿第-方向7延伸，該軸力件i ^ 一長形鋼板並包括-中央段及二組接段12。該二組接 攸12刀別由該中央段！i相反二端一體成形地延伸且配合對 接式、搭接式及插接式裝設於對應之接合板 在本實施例，各該圍束單元2包括-同樣沿第一方向7 延伸且設置於該軸力件1 之中央"k 11表面之保護件21。本 實施例之保護件21 Λ抖“a 為封閉式鋼管，可由高剛性的金屬及金 屬&金所製成，並將該軸力凡 力件1夾S又其中，並使該軸力件J 的側緣外露。 神刀什1M409269 V. New description: [New technical field] The new type is related to the bunching device, especially an undissolved beam device. [Prior Art] Over the past few decades, there have been quite a number of major earthquakes around the world, causing numerous economic losses caused by the collapse of houses. Taiwan is in the plate handover zone with frequent earthquakes throughout the year, so it has opened up the technology of developing earthquake-resistant buildings. Among them, the concentric oblique frame (four) is characterized by the ability to strengthen the lateral stiffness in an economical way, and the shearing force is transmitted by the bracing method, and can be effective. Earthquake energy is absorbed. The frustration support structure is a kind of concentric oblique structure system. Its hysteresis loop performance is quite thick and full, which can effectively offset the energy of seismic waves and has the advantages of high toughness, high strength and high offset energy. The axial force member of the general buckling support structure is fixedly wrapped in the surrounding member. Therefore, the *Xuan axis force member cannot be inspected directly, and the surrounding member must be broken to determine whether the axial force member needs to be replaced. However, once the bundle member is broken: the frustration bundle support structure has to be replaced as a whole. Therefore, referring to Figures i and 2, the Republic of China Announcement No. 57〇〇83 provides a detachable type (4) 杨杨性斜# 9, which provides the viewer with the ability to dismantle the piping of the surrounding members without destroying the surrounding member. The detachable restraint restraint strut 9 is fixedly connected to the building, and includes a long axial force member 91 having a double symmetrical cross-section property and a detachable type disposed around the axial force member W The bunch member 92. The detachable surround member 92 provides the ability of the axial member 91 to counteract seismic energy. Question 3 Detachable frustration restraint toughness bracing 9 93盥n The axial force member 91 of the tooth is welded with a stiffened steel plate 94. The cross section of the 〇 ^ ^ 噼邛 95 and the core segment 96 is ten. Based on the principle of convenient disassembly, Baojing is used to provide a plurality of steel clips 97 with a U-shaped cross section and a plurality of bolts 98, with + s sandwiching the axial force members 91 and the surrounding members 92. When the earthquake ^ 0, the staff can't directly pick up the appearance of the controllable restraint toughness bracing 9... The cofferdam must be removed by removing the wall and removing the bolt 98 and the steel clip 97 4 _ a ^ ^ The round beam member 92 is thereby checked to confirm whether the axial force member 91 needs to be replaced. Autumn, such as + 4 pavilion ..., and this design is easy to disassemble [new content] The surrounding member 92, but still laborious and time consuming. Therefore, the object of the present invention is to provide a non-deformable beam-forming device capable of directly detecting the degree of flexion of the axial force member through the opening of the wall surface. The utility model is suitable for being matched and fixed with a binding plate of a building, and the dissolving beam forming device comprises an axial force member, a plurality of surrounding beam units, a plurality of angle steels and a plurality of fixing units. The axial force member extends in a first direction, the axial force member having a central portion and a set of segments that are integrally formed by the opposite ends of the central portion and are fixed to the corresponding bonding plates. Each of the bunching units includes a protection member extending in the first direction and disposed on the surface of the axial force member. The two protective members sandwich the axial force member and expose the side edges of the axial force member. Each of the angle steels extends in a first direction, and the two angles are paired and sandwiched between the two protective members of the axial force member via a side edge of the axial member. M409269 Each of the fixing units is disposed between the pair of angles in the first direction, and the two protection members of the axial force member and the pair of angle steels are interposed. Preferably, the axial force member has a cross section in a shape, and the number of the surrounding beam units is two, and each of the protective members is respectively disposed on the upper and lower surfaces of the axial force member and has a rectangular hollow steel tube. It is worth mentioning that the protection member can also have various changes, for example, each of the protection members has a τ-shaped cross section and has a bottom wall and an upright wall extending from the bottom wall away from the bottom wall. The protective member is respectively supported by the bottom wall to the upper surface of the force-receiving member. The protective member may also have a U-shaped cross section and have a bottom wall and two extending from the left side of the bottom wall to the right side away from the bottom wall. The upright wall, the two protection members respectively abut against the upper and lower surfaces of the axial force member with the bottom wall. The axial force member may have a cross shape and form four notches, and the number of the surrounding bundle units is four, and each of the protection members is placed in a material notch and the cross section is rectangular and abuts against the shaft. Hollow steel pipe for force pieces. Preferably, each of the bundle unit further comprises a bundle member disposed in each of the protection members. The bundle member is H in the protection member or protrudes inwardly from the inner surface of the protection member. And the plurality of steel plates 抵 which are adjacent to the axial force member are preferably 13⁄4 isometric steel, and the two protective members of the axial force member are sandwiched by the side edges of the axial force members. Preferably, the fixing unit is a solder which is interposed between the diagonal steels and can also be smashed between the diagonal steels, and the fixing unit further comprises a plurality of intervals disposed between the pair of angle steels. Reinforcement. The effect of the novel is that after several earthquakes, it is not necessary to remove the 5 protective members to directly check whether the axial force member has buckling or fracture and other residual permanent deformation, thereby affecting the safety of the building structure, thus, It can effectively avoid unnecessary construction. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. A first preferred embodiment of the present invention is, for example, FIG. 3 and FIG. 4, which is adapted to be fixed to the binding plate 6 of the building 5 and disposed in a wall having a reserved hole. The solution beam forming device comprises an axial force member 1, two surrounding beam units 2, four angle steels 3 and a plurality of fixing units 4. In the present embodiment, the axial force member 1 extends in the first direction 7, the axial force member i ^ An elongated steel plate and includes a central section and two sets of joints 12. The two sets of joints 12 are not integrally formed by the central section! i opposite ends are integrally formed and mated, lapped and plugged In the present embodiment, each of the bunching units 2 includes a protective member 21 extending in the first direction 7 and disposed on the center of the axial force member 1 "k 11 surface. The protective member 21 of the example is "a closed steel pipe, which can be made of high-rigidity metal and metal & gold, and the axial force of the force member 1 is clamped into the S and the axial force member J The side edge is exposed.
各該保護件21截面w Q 了乂呈矩形，亦可以有多種的變化 ，如：各該保護件21為—奢、β ^ 受化 實心管，其截面呈Τ字型（參閱圖 M409269 5)且具有-底壁211及-由底壁211往遠離底壁2ιι之方向 延伸的直立壁212，該二保護件21分別以底壁2ιι頂抵該 軸力件1之中央段U的上、下表面；各該保護件21也可以 是一開放式管，其截面呈U字型（參閱圖6)且具有一底壁 211及二分別由底壁2U左、右側往遠離底壁2ιι之方向延 伸的直立壁m ’該二保護件21分別以底壁211頂抵該轴 力件1之中央段i i的上、下表面。該四個角鋼3各沿第一Each of the protective members 21 has a rectangular cross section, and may have a plurality of variations. For example, each of the protective members 21 is a luxurious, β^-consolidated solid tube having a U-shaped cross section (see Figure M409269 5). And having a bottom wall 211 and an upright wall 212 extending from the bottom wall 211 away from the bottom wall 2 ι, the two protective members 21 respectively abut the upper and lower sides of the central portion U of the axial force member 1 with the bottom wall 2 ιι Each of the protection members 21 may also be an open tube having a U-shaped cross section (see FIG. 6) and having a bottom wall 211 and two extending from the left and right sides of the bottom wall 2U away from the bottom wall 2 ι. The upright wall m' the two protection members 21 respectively abut against the upper and lower surfaces of the central section ii of the axial force member 1 with the bottom wall 211. The four angles 3 are each along the first
方向7延伸，兩兩角鋼3成對且隔著該軸力件】的側緣固 置於該二保護件21上。 另外，各該保護件21也可以是一預鑄式管，立截面呈 實心的矩形（參閱圖7)且該保護件21的上、下表面預設多個 供該固定單元4穿設的連通的穿孔21卜該等保護件Η可 以為二個且成對地隔著該轴力件丨的側緣緊密夹設於該轴 力件1之中央段11的上、下表面，該等保護件21亦可以為 二個緊密相頂抵的保護件21(參„ 8)，各自成對地爽設於The direction 7 extends, and the two angles of the steel are paired and placed on the two protection members 21 via the side edges of the axial force member. In addition, each of the protection members 21 may also be a 預鑄-shaped tube having a solid rectangular cross section (see FIG. 7) and the upper and lower surfaces of the protection member 21 are preset with a plurality of connections for the fixing unit 4 to be connected. The protective members Η can be two and are disposed in pairs on the upper and lower surfaces of the central portion 11 of the axial force member 1 through the side edges of the axial force member ,. 21 can also be two closely spaced protection members 21 (refer to „ 8), each paired in a pair
該轴力件】之中央段n的上、下表面，且該二保護件Μ之 間有多個對著該軸力件丨丨側緣的缺口 212,透過固定單元4 穿設之後’固定束至該等保護件21及軸力件】，並能由該 等保護件21的缺口 212直視該軸力件丨側緣。 參閱圖4與圖9’該等固定單元4各沿該第一方向7相 間隔設置於成對的角鋼3間，用以固定該軸力件卜兩保護 件21及該成對的角鋼3。該固定單元4可為相間隔填置於 ,對角鋼3間的焊料41亦可以是穿設於成對角鋼3間的螺 糸42且該固疋單元4還包含括複數個間隔設置於成對角 7 鋼3之間的補強件43，另外，若是該固定單元4是利用該 等螺絲42以螺接該等保護件21，則每一個螺絲42必須搭 配一夹板44才能鎖緊該等保護件21。 因為角鋼3是隔著該軸力件丨的側緣設置於該二保護 件21上並沿第一方向7延伸，可使軸力件丨側緣外露該 固定單元4是間隔設置於成對角鋼3間，所以外露的轴力 件1可以透過固定單元4之間的間隔處直接被檢視，而無 須破壞或拆解圍束單元2。 同時參閱圖10,本新型第二較佳實施例與第一較佳實 施例的差異在於，各該圍束單元2還包括一束制件Μ以提 供徑向束制力束制該等保護件21與軸力件卜該束制件24 可以是料於職護件21㈣混凝土 22 ;亦可以是由該保 護件21内表面向内突伸並抵頂於該賴件21之二個鋼板 23(參閱圖11)。 參閱圖12,本新型免解式束制裝置之第三較佳實施例 與第:較佳實施例的差別在於該轴力件！之中央段U截面 呈十子型’而㈣束單& 2包括四個分別設置於該十字型 鋼板之四缺Π且與該轴力件1之中央段U緊密頂抵之保護 件21°該保護件21為截面呈矩形的中空鋼管…該八個角 鋼3各沿第一方向7延伸，兩兩角鋼3成對且隔著該軸力 # 1 __以該二保護件21上。參，該等角鋼 3亦可以為多個’兩兩角鋼3間隔地成對於該轴力件1其中 的1緣每對角鋼3彼此緊密相連並固置於該二保 護件1上透過每一成對的角鋼3彼此間的間隔即可直接 M409269 檢視該軸力件1受挫曲的程度。 參閱圖13,本發明第四較佳實施例與第一較佳實施例 的差異在於，本實施例之免解式束制裝置包含二個斷面呈 -字型的軸力件卜該二轴力件！先分別以—表面上、下夹 設於-保護件21，再透過二個保護件21分別夾設頂抵相對 應的轴力# 1的另-表面。再透過上述的角冑3及固定單 元4即可束至該等轴力件〗及保護件21。 綜上所述，忒免解式束制裝置藉由複數個圍束單元2 夾設該等軸力件卜且使該等轴力# i之側緣外露，再將複 數個角鋼3隔著該軸力件丨的侧緣夾設該軸力件丨的該等 保護件21並透過該等固定單元2對該等保護件1〇及該等 軸力件1予以固定束至’不僅能將免解式束制裝置固定於 建築物5之上，更能直接由軸力件丨侧緣檢視該軸力件'工 之挫屈程度，故確實能達成本新型之目的。 惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一習知側面示意圖，說明一之可解式挂屈束制 9 M409269 支撐裝置； 圖2是該習知之剖面圖，說明該可解式挫屈束制支撐 裝置； 圖3是一側面示意圖，說明本新型免解直視式挫屈束 制支撐裝置安裝位置； 圖4是本新型之第一較佳實施例之立體示意圖，說明 本新型的結構及設計； 圖5是一本實施例中保護件的一變化形態剖面示意圖 t 圖6是一本實施例中保護件的另一變化形態剖面示意 圖7是 圖8是·一 本實施例令保護件的又一變化形態剖面示意 本實知例中保護件的再—變化形態剖面示意The upper and lower surfaces of the central portion n of the axial force member, and the plurality of notches 212 facing the side edges of the axial force member between the two protective members, are fixed by the fixing unit 4 To the protection members 21 and the axial force members, the side edges of the axial force members can be directly viewed by the notches 212 of the protection members 21. Referring to Figures 4 and 9', the fixing units 4 are disposed in the first direction 7 at intervals between the pair of angles 3 for fixing the shaft members 2 and the pair of angles 3. The fixing unit 4 may be spaced apart, and the solder 41 between the diagonal steels 3 may also be a screw 42 that is disposed between the diagonal steels 3 and the solid-state unit 4 further includes a plurality of intervals arranged in pairs Reinforcing member 43 between the corners 7 and 3, and if the fixing unit 4 is screwed to the protecting members 21, each of the screws 42 must be coupled with a clamping plate 44 to lock the protective members. twenty one. Since the angle steel 3 is disposed on the two protection members 21 via the side edges of the axial force member 并 and extends in the first direction 7, the side edges of the axial force member 外 can be exposed. The fixing unit 4 is spaced apart from the diagonal steel. 3, so the exposed axial force member 1 can be directly inspected through the interval between the fixed units 4 without destroying or disassembling the surrounding unit 2. Referring to FIG. 10, the difference between the second preferred embodiment of the present invention and the first preferred embodiment is that each of the bundle unit 2 further includes a bundle of members to provide a radial beam force to protect the protection members. 21 and the axial force member, the bundle member 24 may be made of the protective member 21 (four) concrete 22; or may be the two steel plates 23 projecting inwardly from the inner surface of the protective member 21 and abutting against the upper member 21 ( See Figure 11). Referring to Figure 12, a third preferred embodiment of the present invention is different from the preferred embodiment in the axial force member! The central section U has a ten-section and the (four) bundles & 2 includes four protective members 21 respectively disposed on the four-shaped cross-shaped steel plate and closely abutting the central portion U of the axial force member 1 The protective member 21 is a hollow steel tube having a rectangular cross section. The eight angle steels 3 each extend in the first direction 7, and the two angle steels 3 are paired and separated by the axial force #1__. The angled steel 3 may also be a plurality of 'two angles of steel 3 spaced apart from each other. For each of the axial members 3, each pair of angles 3 is closely connected to each other and fixed to the two protective members 1 through each of the two. The angle between the pair of angle steels 3 can be directly observed by M409269 to the extent that the axial force member 1 is bucked. Referring to FIG. 13, a difference between the fourth preferred embodiment of the present invention and the first preferred embodiment is that the dismounting device of the present embodiment includes two axial force members having a cross-section and a shape. Power! Firstly, the surface is placed on the surface of the protective member 21, and then the two protective members 21 are respectively placed against the other surface of the corresponding axial force #1. Then, the above-mentioned corners 3 and the fixing unit 4 can be bundled to the axial force members and the protection member 21. In summary, the 忒 解 束 束 装置 夹 夹 解 解 解 解 解 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒The protective members 21 of the axial force members 夹 are sandwiched by the side edges of the axial force members 并 and the protective members 1 〇 and the axial members 1 are fixedly bundled through the fixing units 2 to The solution-type beam-fixing device is fixed on the building 5, and the degree of frustration of the axial force member can be directly viewed from the side edge of the axial force member, so that the purpose of the present invention can be achieved. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view showing a solvable type of yoke 9 M 409 269 support device; FIG. 2 is a cross-sectional view showing the solvable buckling support device Figure 3 is a side elevational view showing the installation position of the present invention-free direct-view frustration support device; Figure 4 is a perspective view of the first preferred embodiment of the present invention, illustrating the structure and design of the present invention; FIG. 6 is a cross-sectional view showing another variation of the protective member in the embodiment. FIG. 6 is a cross-sectional view showing another modification of the protective member in the embodiment. FIG. 8 is another embodiment of the protective member. The cross-section shows a re-variation profile of the protective member in the present embodiment.
本實施例的剖視示意圖 圖10是一剖面示意圖， 圍束單元還包括一束制件； 圖π是一本實施例纪 制件的變化形態； 圖12是一剖面示意圖， 圖U是一剖面示意圖， 說明本新型第二較佳實施例的 ’說明本實施例的束 說明本新型的第三實施例；及 說明本新型的第四實施例。 10 M409269Figure 10 is a schematic cross-sectional view of the embodiment, the bundle unit further includes a bundle of parts; Figure π is a variation of the embodiment of the embodiment; Figure 12 is a schematic cross-sectional view, Figure U is a section BRIEF DESCRIPTION OF THE DRAWINGS A third embodiment of the present invention will be described with reference to a second embodiment of the present invention, and a fourth embodiment of the present invention will be described. 10 M409269
【主要元件符號說明】 1 ....... —轴力件 24·· 11…… •…中央段 3… 12…… •…組接段 4 ... 2 ....... •…圍束單元 41 ·· 21…… •…保護件 42·. 211… •…穿孔 43·· 212… 缺口 44·. 22…… •…混凝土 5 ··· 23 鋼板 6 束制件 角鋼 固定單元 焊料 螺絲 補強件 夾板 建築物 結合板[Explanation of main component symbols] 1 ....... — Axial force members 24·· 11...... •...Central segment 3...12...... •...Group segments 4 ... 2 ....... •...Bundle unit 41 ·· 21... •...Protection 42·. 211... •...Perforation 43·· 212... Notch 44·. 22... •...Concrete 5 ··· 23 Steel plate 6 bundles angle steel fixed Unit solder screw reinforcement plywood building bond board