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鋼模臺車廠家淺談隧道仰拱液壓臺車的系統構造
來源:www.dzhdjt.com 發布時間:2021年05月26日

蘭州鋼模臺車廠家淺談隧道仰拱液壓臺車的系統構造。隨著隧道施工技術的快速發展,鐵路隧道施工標準的要求越來越高,特別是對隧道防排水施工和仰拱施工的要求不斷提高,普遍要求仰拱全幅施工、砼一次澆筑。為了保證工程質量,加快施工進度節約施工成本,提高機械化作業程度,對隧道仰拱施工技術和設備進行改進,從而保證了其施工質量和進度,以指導類似工程的施工。接下來了解一下隧道仰拱液壓鋼模臺車的系統構造。


隧道仰拱液壓臺車分為五大系統:梁桁架系統、行走配重系統、液壓電氣系統、自動調節模板系統及支撐固定系統。整幅仰拱采用左右2個液壓模板臺車,均為獨立結構,未與棧橋相聯系,與開挖出渣等其他工序互不影響,也不受外力影響。


隧道臺車


縱向主桁架與行走系統及配重平臺為一體;主桁架與弧形仰拱模板通過液壓系統連接,弧形模板的收縮均由液壓系統完成;端頭模板采用鋼模板,按照仰拱襯砌厚度設計為上、下兩層模板,中間安裝環向中埋式止水帶后,采用自制卡具進行固定;行走系統及配重平臺(配重平臺上配重為預制混凝土塊)在已澆筑混凝土仰拱一側,通過電機帶動行走輪完成臺車的前移,另一側端頭設有可調節支撐系統,移到位后通過可調節支撐系統調整標高,確保前后在同一標高,并用錨桿進行錨固。液壓系統工作,將弧形模板按照設計要求調整到位并用調節桿件加固,模板和支架形成一個受力整體,共同承受外力。


其中模板主要由兩部分組成,矮邊墻模板和仰拱底部曲模。采用8塊1.5m的小背模通過螺栓連接而成,面板采用6mm厚Q235b鋼板,主肋采用槽10,間距25cm,并設置加肋板間距1m;由于長度較長對模板進行分節,每節段增加液壓系統,以適應不同長度的仰拱施工;曲面模板應按照設計曲面弧度制作成型,要求滿足設計的結構形狀尺寸,且有足夠的強度、剛度和穩定性。

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