[{"data":1,"prerenderedAt":59},["ShallowReactive",2],{"q-108180-arch_construction-20":3},{"question":4,"neighbors":24,"sameNumber":43,"prev":32,"next":35},{"id":5,"classKey":6,"session":7,"year":8,"subject":9,"number":10,"groupStem":11,"ownStem":12,"stem":12,"options":13,"answer":15,"answerKind":17,"answerS":11,"answerNote":11,"images":18,"explanation":20,"withheld":11,"deepChars":21,"freq":22,"indexable":23},"arch-108180-801-0103-020","architect","108180",108,"建築構造與施工",20,null,"鋼構造的接合處為結構上較弱的一環，下圖中何者接合處的銲接方式較不恰當？",{"A":14,"B":14,"C":14,"D":14},"",[16],"A","single",[19],"\u002Fimages\u002Farch-108180-801-0103-020.png","本題考點：銲接接合受彎時的受力判讀——單側填角銲若讓銲根落在受拉側，接頭最容易從銲根撕開；判斷重點是「銲道配置是否能同時抵抗拉、壓兩側的力」。\n【正解理由】四個圖都在立板上端畫了一個向右的水平力，這個力會在接頭處產生彎矩，使立板向右彎：立板左面受拉、右面受壓。圖(A)的立板是一個 L 形構件的豎肢，L 形的水平肢擱在底板上，圖上只在豎肢右側轉角處畫了一道單側填角銲，左側與水平肢端部都看不到銲道。受拉的左側沒有銲道，拉力只能由右側那一道填角銲的銲根去承受，等於讓銲根被往外「撬開」，應力集中在最脆弱的銲根位置，且構件擱置在底板上的水平肢又使傳力路徑偏心，是四圖中最不恰當的銲接方式。(B)(C)(D)則都讓接頭兩側能共同抵抗彎矩所產生的拉力與壓力。故選 A。\n【逐項排除】\n(A) 較不恰當（本題答案）。不恰當之處有兩點：一是僅單側填角銲，且銲道位在受壓側，受拉側的銲根直接承受張開作用；二是 L 形構件的水平肢只是擱在底板上，力量經由偏心路徑傳到那一道銲道。題目情境下要成為合宜的接頭，應讓立板兩面都有銲道（雙面填角銲），或採全滲透開槽銲，使斷面兩側都能傳力。\n(B) 恰當。圖中為轉角接頭，轉角內側有填角銲、外側轉角也有銲道填實，兩側都有銲接，立板不論向哪個方向受彎，都有銲道承受拉力，不會只靠單一銲根。\n(C) 恰當。T 形接頭於立板左右兩面各施一道填角銲，兩道銲道對稱配置，水平力造成的彎矩由一拉一壓兩道銲道形成力偶共同抵抗，銲根不會單獨被撬開。\n(D) 恰當。圖中立板與下方彎折鋼板的豎肢以兩面開槽（呈 X 形）的對接銲相接，銲道貫穿整個板厚，接頭處斷面連續，拉、壓兩側都有銲材傳力，是受彎接頭中傳力最直接的作法。\n【記憶點】受彎接頭看「受拉側有沒有銲」：單側填角銲讓銲根落在受拉側最危險，雙面填角或全滲透對接才可靠。",582,1,true,[25,28,31,34,37,40],{"number":26,"session":7,"stem":27},17,"有關耐震構造，下列敘述何者錯誤？",{"number":29,"session":7,"stem":30},18,"下圖之施工順序屬於何種樁基腳的作法？ ① ② ③",{"number":32,"session":7,"stem":33},19,"有關國內常用的擋土設施，下列何者不適用於水密性要求高的土層？",{"number":35,"session":7,"stem":36},21,"下圖木構造缺口對接作法為何種對接？",{"number":38,"session":7,"stem":39},22,"依據下圖銲接實況，下列何者為正確的表示方法？",{"number":41,"session":7,"stem":42},23,"有關鋼骨鋼筋混凝土構造（SRC）之敘述，下列何者錯誤？",[44,47,50,53,56],{"number":10,"session":45,"stem":46},"114180","場鑄樁之施工，在完成裝設抓斗於樁心後，尚包含下列步驟，其施工順序何者正確？①清除底部…",{"number":10,"session":48,"stem":49},"113190","樁基礎中，預鑄樁、PC 樁常用的植入工法，不包括下列何者？",{"number":10,"session":51,"stem":52},"112190","有關新建建築物居室牆體之空氣音隔音構造需求，下列敘述何者錯誤？",{"number":10,"session":54,"stem":55},"111180","有關基礎構造之敘述，下列何者正確？",{"number":10,"session":57,"stem":58},"110180","下列關於鋼骨鋼筋混凝土（SRC）構造的敘述，何者錯誤？",1791863209646]