摘要
针对导梁前端带有翘起的桁架桥顶推施工,将带有翘起的导梁简化为"等效直梁"模型,利用"功能互等"定理,建立导梁推送至对岸时对岸支座反力的计算方法,该方法可以较准确地计算导梁带有翘起时,顶推过程对岸支座反力。通过实例将由该方法计算得到的支座反力与有限元计算结果进行对比,证实该模型得到的计算结果较为准确。
According to the incremental launching construction of elevated launching nose, this paper simplified the elevated launching nose as ＂equivalent straight beam＂, and established a calculation method through ＂the equal law of work＂ to account the reaction of other side support. This method can accurately calculate the other side support reaction and preparing for the next step of checking the internal force of the truss. The results obtained by this paper coincide well with the FEM results, so the model in this paper is available.
出处
《钢结构》
2013年第6期44-46,共3页
Steel Construction
关键词
导梁翘起
支座反力
顶推
elevated launching nose
support reaction
incremental launching construction
