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鋼與混凝土組合結構技術

中博建設工程集團有限公司   地址:浙江省溫嶺市城東街道萬昌中路806號青商大廈18樓 電話:0576-8601 1256   傳真:0576-8601 1256   E-MAIL:master@zbjt.cn

中博建設工程集團有限公司

鋼與混凝土組合結構技術

分類:
科技園地
發布時間:
2010/08/10
瀏覽量
  1、主要技術
  內容型鋼與混凝土組合結構主要包括鋼管混凝土柱,十字、H型、箱型、組合型鋼骨混凝土柱,箱型、H型鋼骨梁、型鋼組合粱等。鋼管混凝土可顯著減小柱的截面尺寸,提高承載力;鋼骨混凝土承載能力高,剛度大且抗震性能好;組合梁承載能力高且高跨比小。
  鋼管混凝土施工簡便,梁柱節點采用內環板或外環板式,施工與普通鋼結構一致,鋼管內的混凝土可采用高拋免振搗混凝土,或頂升法施工鋼管混凝土。關鍵技術是設計合理的梁柱節點與確保鋼管內澆搗混凝土的密實性。
  鋼骨混凝土除了鋼結構優點外還具備混凝土結構的優點,同時結構具有良好的防火性能。其關鍵技術是如何合理解決梁柱節點區鋼筋的穿筋問題,以確保節點良好的受力性能與加快施工速度。
  組合梁是在鋼梁上部澆筑混凝土,形成混凝土受壓、鋼結構受拉的截面合理受力形式,充分發揮鋼與混凝土各自的受力性能。組合梁施工時,鋼梁可作為模板的支撐。組合梁設計時要確保鋼梁與混凝土結合面的抗剪性能,又要充分考慮鋼梁各工況下從施工到正常使用各階段的受力性能。
  2、技術指標
  鋼管混凝土設計時應遵循《鋼管混凝土結構設計與施工規程》CECS28的要求。型鋼混凝土設計時應遵循《型鋼混凝土組合結構技術規程》JGJ138的要求。
  3、適用范圍
  鋼管混凝土特別適合應用于高層、超高層建筑的柱及其他有重載承載力設計要求的柱;鋼骨混凝土適合于高層建筑外框柱及公共建筑的大柱網框架與大跨度梁設計;組合梁適用于結構跨度較大而高跨比又有較高要求的樓蓋結構。
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