高速鐵路大跨度空腹式連續(xù)剛構(gòu)設(shè)計(jì)
[Abstract]:The 2 Mega Bridge Bridge of Yinxi high iron desert valley river is 114 m high. In order to meet the requirement of bridge height and combination of topographic relief, the main bridge is (120+210+120) m prestressed concrete hollow continuous rigid frame bridge. The main beam is a new composite structure of arch shaped V brace and box girder section. This structure is the most span of the railway pre stress concrete bridge. The Midas software is used for the main bridge. The bridge carries out the structure calculation, the cantilever construction method is simulated, and the temporary lock and support are assisted to make the V support the lower chords at the same time. The calculation results show that the structure increases the span capacity of the structure, reduces the arch value of the span in the mid span shrinkage and creep, and the stiffness of the construction and operation stage meets the requirements of the standard, and has a good power special. The structure adopts column-slab hollow pier and main beam to consolidate, which is beautiful in linearity and economical in engineering. The results can provide reference for the design and construction of long-span and high-pier railway bridges.
【作者單位】: 中鐵第一勘察設(shè)計(jì)院集團(tuán)有限公司橋隧處;
【分類號】:U448.23
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