摘要
为满足高速铁路安全跨越既有线施工,选择最优的上跨方案,以某特大桥门式墩跨越既有线为研究对象,分别采用D便梁和贝雷梁2种方案施工,从2种方案对既有线的行车安全、既有线现场施工风险以及工期、费用等方面进行对比分析,得出一个最优的施工方案。结果表明:D便梁较贝雷梁方案在操作性等方面均有一定优势;在选择高速铁路上跨既有线施工时,D便梁施工方法更有利于现场实施,实现既有线的安全控制。
In order to satisfy the construction of high-speed railway crossing existing lines safely,the optimal crossing scheme was selected to provide construction reference or technical support for similar projects in the future.First of all,by taking the portal pier of a super-large bridge crossing the existing railway as the analysis object,D-beam and Bailey-beam were adopted respectively for construction.Then,to obtain the optimal scheme,the traffic safety of the existing railway,the site construction risks,the construction period,the cost of crossing the existing railway construction and other aspects of two schemes were comparatively analyzed.The results show that D-beam has certain advantages over Bailey-beam scheme in operability of construction and other aspects.D-beam scheme should be adopted on the highspeed railway construction crossing existing lines,which is more conducive to site construction and achieve safety control of existing lines.
作者
雷涛
郝进京
LEI Tao;HAO Jinjing(Center of Engineering Quality Supervision,National Railway Administration,Beijing 100891,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2019年第S1期69-73,共5页
China Safety Science Journal
关键词
D便梁
贝雷梁
跨既有线
风险控制
施工门式墩
D-shaped steel beam
Bailey beam
cross existing railway
risk control
construction portal pier
