摘要
Abstract
Park Road in Langfang city of Hebei Province was planned to under-cross Beijing-Shanghai high speed railway and the existing Beijing-Shanghai railway. The area features high water table, mostly silty clay soil with small permeability coefficient. In order to achieve the successful connection of the framed bridge jacked under-crossing the existing Beijing - Shanghai railway with the reserved Beijing -Shanghai high-speed railway overpass, to minimize the impact of construction on Beijing - Shanghai high-speed railway, effective sealing measures, construction program refinement, optimization and other methods were adopted to ensure the smooth jacking of the framed bridge in place, to reduce the impact on high-speed rail in the control range. From the design aspect, long enough and deep waterproofing curtains were set along the railway embankment, four sides of work pits were closed by sealing curtains, in the process of the bridge jacking, water stopping and other measures were adopted timely, with very good sealing effect achieved, which ensured the water level near the railway embankment maintained without change, and also the stability of the embankment.关键词
框架桥/预留立交桥/顶进/对接Key words
Framed bridge/ Reserved overpass/ Jacking/ Design分类
交通工程
