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京沪高速铁路土建工程一标段悬灌梁改现浇法施工方案 中铁十七局京沪高速铁路土建工程一标段工程经理部二〇〇八年八月 廊坊目 录一、工程概况..............................................................................................................1二、悬灌法与支架现浇方案比照...........................................................................21、〔32+48+32〕M 连续梁...................................................................................22、〔40+56+40〕M 连续梁...................................................................................23、〔40+64+40〕M 连续梁...................................................................................34、〔48+80+48〕M 连续梁...................................................................................4三、支架计算..............................................................................................................8〔一〕支架规格..........................................................................................................8〔二〕支架结构..........................................................................................................8〔三〕支架设计........................................................................................................101、荷载取值..............................................................................................................102、次梁计算..............................................................................................................103、横梁〔I14 工字钢〕验算.................................................................................124、立杆验算..............................................................................................................145、地基容许承载力计算........................................................................................15四、支架预压与变形观测......................................................................................15五、预拱度设置.....................