斜拉桥牵索挂篮有限元计算与静载试验对比分析研究
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摘要
甘竹溪特大桥是一座主跨210 m的预应力砼斜拉桥,采用牵索挂篮施工。为确保桥梁施工过程中结构的安全性和立模标高的精确确定,建立牵索挂篮的空间有限元模型,按实际施工阶段计算其应力和挠度,并与静载试验实测数据进行比较分析。结果表明,该挂篮设计合理,在结构强度、刚度和稳定性方面均能满足规范要求,并有较高的应力安全储备,理论值与实测值的总体变化趋势一致,可根据挠度实测结果确定立模标高。
To ensure the security of the cantilever construction and elevation template adjustment for cable-stayed bridge,the spatial finite element model of guyed form traveler for Gan-zhu-xi cablestayed bridge was built. At first,two models are considered under actual construction stage,then a static loading test was carried out. The computational results was in consistent with those from the field tested.It also showed that the optimal design was reliable and the operational performance could meet the construction requirements. Elevation template can be determined by the deflection measured results.
To ensure the security of the cantilever construction and elevation template adjustment for cable-stayed bridge,the spatial finite element model of guyed form traveler for Gan-zhu-xi cablestayed bridge was built. At first,two models are considered under actual construction stage,then a static loading test was carried out. The computational results was in consistent with those from the field tested.It also showed that the optimal design was reliable and the operational performance could meet the construction requirements. Elevation template can be determined by the deflection measured results.
引文
[1]林元培.斜拉桥[M].北京:人民交通出版社,1994.
[2]谢理民.宽幅斜拉桥牵索挂篮静载试验有限元分析[J].世界桥梁,2013,41(2):27-30.
[3]张德伟.黄草鸟江大桥挂篮荷载试验[J]..铁道标准设计,2005(3):49-51.
[4]李丹.甘竹溪大桥主梁标准段牵索挂篮施工计算与模拟分析[J].公路,2011(12):54-58.
[5]Sakai F,lsoe A,Umeda A,et al.Construction control system for cable-stayed bridge[J].IABSE,1988,(4):147-152.
[6]聂辉.尚艳亮.宋强,等.仓安路斜拉桥牵索挂篮横梁应力的室内试验[J].铁道建筑.2006,22(2):22-23.
[7]李照众,王立彬,许国祥,等.斜拉桥牵索挂篮有限元分析[J].南京林业大学学报:自然科学版,2009,33(3):121-124.
[8]陈兆栓.预应力混凝土斜拉桥施工监控概率方法研究[D].广州:华南理工大学,2012.
[9]李照众.斜拉桥牵索挂篮有限元分析[J].南京林业大学学报:自然科学版,2009,33(3):121-124.
[10]苏成,陈太聪,韩大建,等.崖门大桥主梁牵索挂篮施工模拟计算[J].桥梁建设,2003(1):12-15.
[2]谢理民.宽幅斜拉桥牵索挂篮静载试验有限元分析[J].世界桥梁,2013,41(2):27-30.
[3]张德伟.黄草鸟江大桥挂篮荷载试验[J]..铁道标准设计,2005(3):49-51.
[4]李丹.甘竹溪大桥主梁标准段牵索挂篮施工计算与模拟分析[J].公路,2011(12):54-58.
[5]Sakai F,lsoe A,Umeda A,et al.Construction control system for cable-stayed bridge[J].IABSE,1988,(4):147-152.
[6]聂辉.尚艳亮.宋强,等.仓安路斜拉桥牵索挂篮横梁应力的室内试验[J].铁道建筑.2006,22(2):22-23.
[7]李照众,王立彬,许国祥,等.斜拉桥牵索挂篮有限元分析[J].南京林业大学学报:自然科学版,2009,33(3):121-124.
[8]陈兆栓.预应力混凝土斜拉桥施工监控概率方法研究[D].广州:华南理工大学,2012.
[9]李照众.斜拉桥牵索挂篮有限元分析[J].南京林业大学学报:自然科学版,2009,33(3):121-124.
[10]苏成,陈太聪,韩大建,等.崖门大桥主梁牵索挂篮施工模拟计算[J].桥梁建设,2003(1):12-15.