钢箱梁桥牵引滑梁设计与施工关键技术

发布时间：2018-05-14 04:40

本文选题：钢箱梁 + 支架滑道　；参考：《沈阳建筑大学学报(自然科学版)》2015年02期

【摘要】：目的提出沈阳新南站高架桥在既有地下结构上牵引滑梁设计与施工关键技术方案,以推广此类新施工工艺在复杂地理环境中的应用.方法通过实地考察与理论计算,提出牵引滑梁设计与施工关键技术方案.即支架采用四腿格构式支架形式,横向采用一排贝雷桁架滑道,纵向采用4排贝雷桁架滑道,以供钢箱梁段横、纵向滑移至设计位置焊接拼装.结果支架结构在加载过程中,滑道竖向最大变形为9.6 mm,结构变形满足要求;结构应力均小于所使用钢材的容许应力,应力满足要求;屈曲分析的失稳特征值均大于4.0,稳定性满足要求.结论该施工工艺为施工提出安全保障,提高了经济效益,并为类似工程提供施工参考.
[Abstract]:In order to popularize the application of this new construction technology in complex geographical environment, the key technical scheme for the design and construction of traction sliding beam on the existing underground structure of the viaduct of Shenyang New South Railway Station is put forward. Methods based on field investigation and theoretical calculation, the key technical scheme of design and construction of traction sliding beam was put forward. That is to say, the support adopts the form of four-legged lattice support, adopts a row of Beere truss slide track in the transverse direction and four rows of belay truss slide track in the longitudinal direction to provide the steel box girder with transverse and longitudinal slip to the design position for welding and assembling. Results during loading, the maximum vertical deformation of the slide track was 9.6 mm, and the structural stress was less than the allowable stress of the steel used. The instability eigenvalues of buckling analysis are all greater than 4.0, and the stability meets the requirements. Conclusion the construction technology provides safety guarantee and economic benefit for construction, and provides construction reference for similar projects.
【作者单位】：沈阳建筑大学土木工程学院;中铁上海工程局有限公司;
【基金】：国家自然科学基金项目(51278312) 辽宁省教育厅创新团队基金项目(LT2012012) 辽宁省“百千万人才工程”人选项目择优资助项目(2012921047) 高校优秀科技人才支持计划(LR2013025)
【分类号】：U445.4

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