3) existing rigid frame bridge
既有刚架混凝土拱桥
4) existing bridge
既有桥梁
1.
Time-dependent reliability analysis of existing bridges strengthened with FRP laminates;
既有桥梁外贴纤维布加固后可靠度分析
2.
To reduce the influence of deep water foundation construction to existing bridge foundation,to reduce the plugging of flood channel and to lower the construction cost,the project was adopting a serious technique measures of double thin-walled steel and steel concrete combined cofferdam,using different cofferdam style in different locations and .
为减小深水基础开挖施工对既有桥梁基础扰动、减少桥梁基础施工对防洪河道堵塞与降低施工成本,工程中采用了双薄壁钢—钢筋混凝土组合围堰与不同地点采用不同围堰形式等一系列技术措施。
3.
The paper analyzed the main failure of existing bridges,discussed advantage and disadvantage of strengthening methods for traditional bridge.
对目前既有桥梁存在的主要缺陷进行了较全面的分析,通过对传统桥梁加固方法的优缺点的论述,提出碳纤维材料加固桥梁的优越性。
5) existing bridge
既有桥
1.
By example of the second bridge on XIANG-JIANG river in CHANGSHA,the effect is studied to the internal force of a twin-stayed bridge with sigle-cable-plane due to adding loads, and shows the effects of existing bridge by adding loads.
文章以湖南长沙湘江北大桥为例,详细分析由于荷载变化对双塔单索面斜拉桥的内力影响,阐述荷载的增加对既有桥梁结构的影响。
2.
In order to making the existing bridge safety operation and extending its safe serving time, the bridge detection and evaluation should be done.
为了保证既有桥的安全运营和尽可能延长其安全使用年限 ,应对既有桥进行检测、评估。
6) existing abutment
既有桥台
1.
Consolidation of existing abutments is key to ensuring construction period and normal operation of railway line.
既有桥台加固是控制工期、确保线路正常运营的关键。
补充资料:拱桥
拱桥 arch bridge 以承受轴向压力为主的拱圈或拱肋作为主要承重构件的桥梁,拱结构由拱圈(拱肋)及其支座组成。拱桥可用砖、石、混凝土等抗压性能良好的材料建造;大跨度拱桥则用钢筋混凝土或钢材建造,以承受发生的力矩。按拱圈的静力体系分为无铰拱、双铰拱、三铰拱。前二者为超静定结构,后者为静定结构。无铰拱的拱圈两端固结于桥台,结构最为刚劲,变形小,比有铰拱经济,结构简单,施工方便,是普遍采用的形式,但修建无铰拱桥要求有坚实的地基基础。双铰拱是在拱圈两端设置可转动的铰支承,结构虽不如无铰拱刚劲,但可减弱桥台位移等因素的不利影响,在地基条件较差和不宜修建无铰拱的地方,可采用双铰拱桥。三铰拱则是在双铰拱的拱顶再增设一铰,结构的刚度更差些,拱顶铰的构造和维护也较复杂,一般不宜作主拱圈。拱桥按结构形式可分为板拱、肋拱、双曲拱、箱形拱、桁架拱。拱桥为桥梁基本体系之一,一直是大跨径桥梁的主要形式。拱桥建筑历史悠久,20世纪得到迅速发展,50年代以前达到全盛时期。古今中外名桥(如赵州桥、卢沟桥、悉尼港桥、克尔克桥等)遍布各地,在桥梁建筑中占有重要地位,不仅适用于大、中、小跨径的公路桥和铁路桥,因其造型优美,更常用于城市及风景区的桥梁建筑。
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