铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2014年
11期
57-61
,共5页
卢炜%唐广辉%纪文利%邓帅%张雄峰
盧煒%唐廣輝%紀文利%鄧帥%張雄峰
로위%당엄휘%기문리%산수%장웅봉
高速铁路%桩板结构%差异沉降限值%内力变化
高速鐵路%樁闆結構%差異沉降限值%內力變化
고속철로%장판결구%차이침강한치%내력변화
High-speed railway%Pile-plank structure%Differential settlement limit value%Structural internal force variation
桩板结构属于超静定结构，各桩之间的差异沉降会引起显著的结构内力，把空间结构近似简化成平面结构，采用结构力学分析方法，分别对5 mm 和2 mm 的差异沉降进行内力计算。计算过程中综合考虑温度变化，混凝土收缩徐变，列车动力作用，不同桩位发生支座下沉，采用6种工况组合分别计算，得出不同差异沉降对结构内力的影响。
樁闆結構屬于超靜定結構，各樁之間的差異沉降會引起顯著的結構內力，把空間結構近似簡化成平麵結構，採用結構力學分析方法，分彆對5 mm 和2 mm 的差異沉降進行內力計算。計算過程中綜閤攷慮溫度變化，混凝土收縮徐變，列車動力作用，不同樁位髮生支座下沉，採用6種工況組閤分彆計算，得齣不同差異沉降對結構內力的影響。
장판결구속우초정정결구，각장지간적차이침강회인기현저적결구내력，파공간결구근사간화성평면결구，채용결구역학분석방법，분별대5 mm 화2 mm 적차이침강진행내력계산。계산과정중종합고필온도변화，혼응토수축서변，열차동력작용，불동장위발생지좌하침，채용6충공황조합분별계산，득출불동차이침강대결구내력적영향。
Subgrade pile-plank structure belongs to hype static structure, and the differential settlement between piles will cause significant structural internal force. By means of structure simplification, the space structure can be approximately simplified into a plane structure. With structural mechanics analysis, the internal forces in 5 mm and 2 mm differential settlement are calculated respectively. Considering the temperature variation, shrinkage and creep of concrete, train dynamic action and support displacement of different piles related to calculation, the influences of various differential settlements on the structural internal forces are calculated respectively with respect to 6 kinds of working conditions.
