广东公路交通
廣東公路交通
엄동공로교통
GUANGDONG HIGHWAY COMMUNICATIONS
2014年
6期
32-35
,共4页
大跨度%预应力混凝土%梁桥%预拱度
大跨度%預應力混凝土%樑橋%預拱度
대과도%예응력혼응토%량교%예공도
large span%Pre-stressed Concrete%Bridge%Pre-camber
对悬臂施工预应力混凝土梁桥预拱度设置方法和影响因素进行研究的基础上，结合桥梁结构的有限元模拟分析以及已有大跨径混凝土梁桥长期变形规律的统计结果，提出一种以桥梁结构长期变形曲线为基础的成桥预拱度设置方法。通过工程算例，将其与已有的计算方法进行比较分析。该计算方法具有概念清晰，符合桥梁结构变形实际的特点，且具有不受桥型结构限制的特点，可为桥梁结构的设计和施工监控提供参考。
對懸臂施工預應力混凝土樑橋預拱度設置方法和影響因素進行研究的基礎上，結閤橋樑結構的有限元模擬分析以及已有大跨徑混凝土樑橋長期變形規律的統計結果，提齣一種以橋樑結構長期變形麯線為基礎的成橋預拱度設置方法。通過工程算例，將其與已有的計算方法進行比較分析。該計算方法具有概唸清晰，符閤橋樑結構變形實際的特點，且具有不受橋型結構限製的特點，可為橋樑結構的設計和施工鑑控提供參攷。
대현비시공예응력혼응토량교예공도설치방법화영향인소진행연구적기출상，결합교량결구적유한원모의분석이급이유대과경혼응토량교장기변형규률적통계결과，제출일충이교량결구장기변형곡선위기출적성교예공도설치방법。통과공정산례，장기여이유적계산방법진행비교분석。해계산방법구유개념청석，부합교량결구변형실제적특점，차구유불수교형결구한제적특점，가위교량결구적설계화시공감공제공삼고。
Base on the research on the influence factors and setting method of the pre-camber for pre-stressed concrete bridges with cantilevering construction,according to the finite element model and the long term deformation statistical results of the bridge,a new pre-camber setting method based on the long term deformation curve is proposed.Taking an engineering practice as an example,it has been compared with other methods,the result shows that the method has fea-tures of clear concept,being consistent with the long deformation curve of the bridge,and not being restricted by the dif-ferent bridge structure,so references could be provided for the design and construction monitoring of bridges.
