沪宁城际客运专线搅拌桩复合地基沉降超限整治措施研究  

Study on Treatment Measuresfor Excessive Settlement of Mixing Piles Composite Foundation on Huning Intercity Passenger Dedicated Line

作　　者：潘振华[1] 

机构地区：[1]上海铁路局工务处,上海210075

出　　处：《路基工程》2014年第3期106-111,115,共7页Subgrade Engineering

摘　　要：在沪宁城际客运专线K300+199^+284段,为有效地控制地基沉降,在地基处理时,采用了搅拌桩加垫层等形式的结构;但由于复杂的地层及水文条件导致个别地段地基沉降超限,影响客运专线运行速度与安全。对此,分析了沪宁城际K300+199^+284无砟轨道地段的搅拌桩加垫层复合地基沉降超限的原因,并采取了有针对性的整治措施,能够保证轨道结构变形不超限。In the K300 ＋ 199 ～ ＋ 284 Section of Huning Intercity Passenger Dedicated Line, the structure which combines mixing piles with bed course was adopted during the foundation treatment in order to control the foundation settlement; however, as a result of the excessive settlement of several sections caused by complex strata and hydrological conditions, the running speed and safety was still affected. Thus, the reasons why such composite foundation combining mixing piles with bed course in the K300 ＋ 199 ～ ＋ 284 ballastless track section of Huning Intercity PDL had excessive settlement were analyzed, in relation to which the treatment measures were adopted and was captable of ensuring the track structure deformation not to overange.

关 键 词：城际客运专线 复合地基 沉降超限 原因分析 整治措施 

分 类 号：TU473.14[建筑科学—结构工程]