兰州交通大学学报
蘭州交通大學學報
란주교통대학학보
JOURNAL OF LANZHOU JIAOTONG UNIVERSITY(Natural Sciences)
2014年
1期
119-123
,共5页
曲线连续刚构桥%横向预偏量%主墩横向位移
麯線連續剛構橋%橫嚮預偏量%主墩橫嚮位移
곡선련속강구교%횡향예편량%주돈횡향위이
curved continuous concrete rigid frame bridge%transverse pre-camber%lateral displace-ment of main pier
曲线连续刚构桥除了主梁要设置预拱度之外,主墩也需要设置类似的横向预偏量。通过分析高墩大跨度预应力混凝土曲线连续刚构桥施工过程中的空间变形特点,探讨施工阶段中各工况对主墩横向变形带来的影响。以某工程实例为背景,建立三维有限元模型计算分析曲线连续刚构桥在施工阶段过程中产生的横向位移,在原有设计的基础上,为桥墩设置正确的横向预偏量提供科学数据,为此类桥梁的设计、施工以及监控等提供参考。
麯線連續剛構橋除瞭主樑要設置預拱度之外,主墩也需要設置類似的橫嚮預偏量。通過分析高墩大跨度預應力混凝土麯線連續剛構橋施工過程中的空間變形特點,探討施工階段中各工況對主墩橫嚮變形帶來的影響。以某工程實例為揹景,建立三維有限元模型計算分析麯線連續剛構橋在施工階段過程中產生的橫嚮位移,在原有設計的基礎上,為橋墩設置正確的橫嚮預偏量提供科學數據,為此類橋樑的設計、施工以及鑑控等提供參攷。
곡선련속강구교제료주량요설치예공도지외,주돈야수요설치유사적횡향예편량。통과분석고돈대과도예응력혼응토곡선련속강구교시공과정중적공간변형특점,탐토시공계단중각공황대주돈횡향변형대래적영향。이모공정실례위배경,건립삼유유한원모형계산분석곡선련속강구교재시공계단과정중산생적횡향위이,재원유설계적기출상,위교돈설치정학적횡향예편량제공과학수거,위차류교량적설계、시공이급감공등제공삼고。
Except the set of pre-camber,the main piers of curved prestressed continuous concrete rigid frame bridge also has the pre-camber.Based on analyzing the characteristics of spatial de-formation of the curved prestressed continuous concrete rigid frame bridge with high piers and long-span,to make an analysis of the effects on the deformation of main pier which are caused by all kinds of the working conditions in the construction stages.Through a real engineering proj ect, build a three-dimensional finite element model to calculate and analyze the lateral displacement of curved prestressed concrete rigid frame bridge in the construction stage.The study may provide scientific evidence for the set of pre-camber of main piers and some suggestions for design,con-struction and monitor.