[{"data":1,"prerenderedAt":61},["ShallowReactive",2],{"q-106180-arch_construction-43":3},{"question":4,"neighbors":26,"sameNumber":45,"prev":34,"next":37},{"id":5,"classKey":6,"session":7,"year":8,"subject":9,"number":10,"groupStem":11,"ownStem":12,"stem":12,"options":13,"answer":18,"answerKind":20,"answerS":11,"answerNote":11,"images":21,"explanation":22,"withheld":11,"deepChars":23,"freq":24,"indexable":25},"arch-106180-801-0103-043","architect","106180",106,"建築構造與施工",43,null,"鋼骨建築梁柱結構銲接施工時，應從何處開始銲接？",{"A":14,"B":15,"C":16,"D":17},"銲接後變形量最小之處","銲接後變形量最大之處","鋼骨長度一半處","鋼骨上任何位置均可",[19],"B","single",[],"本題考點：鋼骨梁柱銲接的銲接順序原則——銲道冷卻時會收縮變形，應先銲收縮與變形量最大的部位，讓它在拘束較小的狀態下自由收縮，再銲變形量小的部位，以控制整體變形與殘留應力。\n【正解理由】銲接時銲道與母材局部被加熱熔融，冷卻後體積收縮，會拉動構件產生變形，若收縮受到周圍已完成銲道的拘束，就會轉成殘留應力，甚至在銲道或熱影響區造成裂縫。整體構架的拘束程度會隨銲接進度愈來愈高：剛開始銲接時，構件之間尚可微幅移動，收縮可以自由發生；後段銲接時，周圍接頭都已固定，收縮無處釋放。因此安排銲接順序時，應先銲接收縮量大、變形量大的接頭（例如厚板、銲道斷面大的全滲透對接部位），趁拘束尚小時讓它充分收縮；再銲收縮量小、變形量小的接頭，後者即使受拘束，產生的殘留應力也有限。這樣可同時控制構架的尺寸精度與內部應力。故選 B。\n【逐項排除】\n(A) 銲接後變形量最小之處：不符合題目所問。先銲變形量小的部位，等於讓構架先被固定住；之後再銲變形量大的部位時，它的收縮受到全面拘束，殘留應力與變形都會集中在最後的大銲道上，容易造成構件扭曲或銲道開裂。順序正好相反，應先大後小。\n(B) 銲接後變形量最大之處：符合題目所問。變形量大的部位先銲，可在構架拘束最小時讓它自由收縮，後續變形量小的銲道再補上，整體變形與殘留應力都較小。\n(C) 鋼骨長度一半處：不符合題目所問。「由中央向兩端」是處理單一長銲道或大面板時分散熱量、讓收縮向自由端釋放的手法，屬於一條銲道內的運行方向；本題問的是梁柱結構銲接從哪個部位開始，判準是各接頭的收縮與變形量大小，而不是幾何上的長度中點。\n(D) 鋼骨上任何位置均可：不符合題目所問。銲接順序直接影響變形與殘留應力的分布，鋼構銲接都要事先擬定銲接順序計畫；若任意開始，容易造成柱子傾斜、梁端角度偏差與接頭殘留應力過大，因此不可能任何位置皆可。\n【記憶點】銲接順序「先大後小」：先銲收縮變形大的，再銲收縮變形小的；長銲道則「由中央向兩端、對稱施銲」。",685,1,true,[27,30,33,36,39,42],{"number":28,"session":7,"stem":29},40,"室內裝修工程，下列那項工程應最後進場施作？",{"number":31,"session":7,"stem":32},41,"依建築物無障礙設施設計規範，無障礙停車位地面之表面不可使用何種材料？",{"number":34,"session":7,"stem":35},42,"橡膠止水帶在建築防水工程中的功能，下列何者錯誤？",{"number":37,"session":7,"stem":38},44,"鋼骨建築結構銲接施工時，銲條須預熱烘乾之目的為何？",{"number":40,"session":7,"stem":41},45,"就現行法令而言，下列何種防火被覆工法無法滿足 3.6 m 樓高鋼構造建築，及其鋼梁 …",{"number":43,"session":7,"stem":44},46,"鋼骨以螺栓接合時，其螺栓群之鎖緊順序何者正確？",[46,49,52,55,58],{"number":10,"session":47,"stem":48},"114180","構造物於大地定位時，所放樣的軸線交點樁，於土方整地、開挖基礎或地下室時，導致這些樁體…",{"number":10,"session":50,"stem":51},"113190","發現直立之女兒牆體有斜紋龜裂滲水，此一場地條件最不適宜選用下列防水材料作處理？",{"number":10,"session":53,"stem":54},"112190","有關廠製金屬三明治板外牆，下列敘述何者錯誤？",{"number":10,"session":56,"stem":57},"111180","有關 RC 構造耐震補強工法之敘述，下列何者錯誤？",{"number":10,"session":59,"stem":60},"110180","關於地基調查的相關內容，下列何者錯誤？",1791863212665]