铁道标准设计2019，Vol.63Issue(3)：75-79,5.DOI:10.13238/j.issn.1004-2954.201805280008
高速铁路跨度40m与32m简支箱梁建造技术对比研究
Comparative Study on Construction Technology of Simply Supported Box Girders of 40 m and 32 m Spans for High-Speed Railway
湛敏1
作者信息
- 1. 中铁第五勘察设计院集团有限公司, 北京 102600
- 折叠
摘要
Abstract
In order to compare the construction technology of simply supported box beams (SSBB) of 40 m and 32 m spans for high speed railway, the calculation models of SSBG of five spans of 40 m and32 m are set up respectively.The two calculation models are compared and analyzed from the two aspects of structural dynamic characteristics and vehicle/bridge coupling dynamic response.Finally, an engineering project is taken as the background to study the 40 m and 32 m SSBB schemes from the economic point of view.The results show that for the SSBB calculation model of five 40 m and 32 m spans, the self-vibration frequency of the 40 m SSBB is lower.The transverse acceleration and the displacement of the beam body of the 40 m beam model are larger than those of the 32 m beam model.The influence of pier height variation onthe lateral acceleration and lateral displacement of the two models is consistent.For the bridge with 25 m high piers, the total cost of the project with 40 m SSBB is 1.2％ lower than that with 32 m SSBB and the cost of the substructure project is also obviously lower than that of the 32 m SSBB, and the higher the pier, the more obvious its advantage.关键词
高速铁路/箱形梁/简支梁/动力特性/车桥耦合/造价Key words
High-speed railway/Box beam/Simply supported beam/Dynamic characteristics/Vehicle/bridge coupling/Cost分类
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湛敏..高速铁路跨度40m与32m简支箱梁建造技术对比研究[J].铁道标准设计,2019,63(3):75-79,5.
