铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2015年
2期
91-94,95
,共5页
地铁车站%明挖%抗浮压顶梁%抗拔桩%有限元分析
地鐵車站%明挖%抗浮壓頂樑%抗拔樁%有限元分析
지철차참%명알%항부압정량%항발장%유한원분석
Metro station%Cut-and-cover%Anti-floating coping beam%Uplift Pile%Finite Element Anal-ysis
在高地下水位地区修建地铁车站,往往存在抗浮问题。抗浮问题处理得当与否直接关系着地铁车站正常使用期间的可靠度。而采用不同抗浮措施会对结构内力产生不同的影响,为研究这种影响并希望从结构受力角度对车站抗浮提出一定的建议,结合一个明挖地铁车站实例,针对目前最常见的2种抗浮措施———压顶梁和抗拔桩进行数值计算,发现抗拔桩具有改善结构受力的作用,在结构跨度较大时应采用抗拔桩或者抗拔桩与压顶梁联合抗浮的措施,在结构跨度较小时,可优先考虑压顶梁抗浮。
在高地下水位地區脩建地鐵車站,往往存在抗浮問題。抗浮問題處理得噹與否直接關繫著地鐵車站正常使用期間的可靠度。而採用不同抗浮措施會對結構內力產生不同的影響,為研究這種影響併希望從結構受力角度對車站抗浮提齣一定的建議,結閤一箇明挖地鐵車站實例,針對目前最常見的2種抗浮措施———壓頂樑和抗拔樁進行數值計算,髮現抗拔樁具有改善結構受力的作用,在結構跨度較大時應採用抗拔樁或者抗拔樁與壓頂樑聯閤抗浮的措施,在結構跨度較小時,可優先攷慮壓頂樑抗浮。
재고지하수위지구수건지철차참,왕왕존재항부문제。항부문제처리득당여부직접관계착지철차참정상사용기간적가고도。이채용불동항부조시회대결구내력산생불동적영향,위연구저충영향병희망종결구수력각도대차참항부제출일정적건의,결합일개명알지철차참실례,침대목전최상견적2충항부조시———압정량화항발장진행수치계산,발현항발장구유개선결구수력적작용,재결구과도교대시응채용항발장혹자항발장여압정량연합항부적조시,재결구과도교소시,가우선고필압정량항부。
There often exists anti-floating problem in the construction of the subway station in high water table areas. The handling of anti-floating is directly related to the reliability of subway station during normal operation of the subway station. Handling anti-floating with different measures may have different effects on the internal forces of the structure. To study the effects and seek some suggestions in the light of structural stresses, this paper, with reference to a metro station constructed with cut-and-cover method and on the basis of the two most common anti-floating measures — capping beam and uplift pile in the numerical calculation, concludes that the uplift pile can improve the effect of the structural stress, when the span of the structure is large, the uplift pile alone or the combination of uplift pile and capping beam shall be employed to fulfill anti-floating;if the span is small, capping beam shall be prioritized.