【正文】 ...................................................................................................................113．主橋拱圈、預(yù)應(yīng)力混凝土箱梁 ........................................................................................113．2．施工順序 .........................................................................................................................................113．2．施工工藝流程圖 .............................................................................................................................13第四章 鋼筋、預(yù)應(yīng)力鋼絞線 .................................................................................154．概況 ....................................................................................................................................154．1．引橋鋼筋混凝土箱梁 .....................................................................................................................154．1．主橋拱圈、預(yù)應(yīng)力混凝土箱梁 .....................................................................................................174．鋼筋 ....................................................................................................................................194．2．規(guī)定與要求 .....................................................................................................................................194．2．鋼筋加工 .........................................................................................................................................194．2．鋼筋連接 .........................................................................................................................................194．2．鋼筋骨架和鋼筋網(wǎng)片的組成及安裝 .............................................................................................214．預(yù)應(yīng)力筋 ............................................................................................................................224．3．鋼絞線 .............................................................................................................................................224．3．錨具、夾片 .....................................................................................................................................234．3．預(yù)應(yīng)力管道 .....................................................................................................................................23第五章 支架、模板 .................................................................................................245．概況 ....................................................................................................................................245．支架搭設(shè) ............................................................................................................................245．2．主橋中跨 段 .....................................................................................................................................245．2．主橋邊跨段、引橋 .........................................................................................................................285．模板制作、安裝 ................................................................................................................303 / 545．3．底模板 .............................................................................................................................................305．3．側(cè)模板 .............................................................................................................................................32第六章 鋼筋混凝土、預(yù)應(yīng)力混凝土 .....................................................................356．概況 ....................................................................................................................................356．1．混凝土用的材料 .............................................................................................................................356．1．混凝土的配合比 .............................................................................................................................366．1．混凝土的拌制 .................................................................................................................................366．1．混凝土的運輸 .................................................................................................................................376．1．混凝土的澆筑 .................................................................................................................................376．1．混凝土的養(yǎng)護及修飾 .....................................................................................................................38第七章 張拉、壓漿 .................................................................................................397．概況 ....................................................................................................................................397．張拉 ....................................................................................................................................397．2．機具及設(shè)備 .....................................................................................................................................397．2．張拉應(yīng)力控制 .................................................................................................................................397．2．預(yù)留孔道 .........................................................................................................................................397．2．鋼絞線安裝 .....................................................................................................................................407．2．鋼絞線張拉 .....................................................................................................................................407．孔道壓漿 ............................................................................................................................417．3．水泥漿的材料 ...................................................................................................................