独塔斜拉桥大吨位转体结构分析

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中图分类号：U441 文献标志码：A 文章编号：2095-2945（2025）30-0090-04

DOI：10.19981/j.CN23-1581/G3.2025.30.022

Abstract：TheBaeryi Stret SouthExtensionProjectinPutianCityemploystwosingle-pylonconcretecable-stayedbridges with spans of （38+38+38+165）m and （205+46+46+46）m to cross existing railways， featuring mega-tonnage swivel systems of 44，000 tonsand5tosrespectively.Tonvestigatethemehanicalehavioroftheotatioalructures，finiteelemntaalysiswasconductedontheupperandlowerswivelbearingsusingMidasFEAsoftware.Thecomputationalresultsindicatethat： Theoverallmechanicalperformanceoftheswivelstructureremainedsatisfactoryduringrotation，meetingallcoderequirements. Properarrangementofprestressngtendonscouldefectivelyimprovethestressdistributioninbothupperandlowerswivelbearings.The findings ofthis studycan provide valuablereferences for similar bridge engineering projects in the future.

Keywords：single-towercable-stayedbridge;large-tonnageswivel;swivelstructure;finiteelement;constructionplan

莆田市八二一街南伸工程在莆田站区范围内上跨既有杭深线和新建福厦铁路正线等13股道，跨编组站桥梁孔跨布置为（ 38+38+38+165 0 ρm 独塔混凝土斜拉桥 +（205+46+46+46 ） m 独塔混凝土斜拉桥。（剩余3720字）