悬臂桥

With the development of the Cantilever construction technique, the pre-stressed concrete continuous beam bridges get unprecedented development.

随着悬臂浇筑施工技术的不断发展，预应力混凝土连续梁桥得到了空前的发展。

During cantilever casting of long span prestressed concrete continuous box beams, the construction control, a complicated and dynamic system engineering, is an important measure for bridges to ensure their lineament and to meet the design requirement of the internal force.

大跨径预应力混凝土连续箱梁悬臂浇筑施工过程中，施工控制是个复杂的动态系统工程，是实现大桥成桥线形、内力满足设计要求的重要手段。

Through the assimilating and analyzing the construction materials and the design of reinforced concrete arch bridges with long span from both domestic and abroad, the thesis studies the effect of the arch axis geometry, rise-span ratio, arch ring section and spandrel structures, as well as the ultimate bearing capacity and stability of the entire bridge on the design of reinforced concrete arch bridge. In addition, in consideration of construction, the thesis also studies the applicability of different construction methods such as cable crane system, stiffened skeleton system, swing construction system and cantilever construction system and correspoindingly economica spans and their applications of the reinforced concrete arch bridges.

本论文通过对国内外大跨径钢筋混凝土拱桥的设计、施工资料的收集及其出现问题的分析，从设计角度研究了拱轴线形、矢跨比、拱圈截面及拱上构造、全桥极限承载能力及稳定性对钢筋混凝土拱桥设计的影响；从施工角度研究了缆索吊装法、劲性骨架法、转体施工法、悬臂施工法等不同施工方法的钢筋混凝土拱桥的经济适用跨径及其适用条件。

Under the concentrated loading, the maximum von Mises stress in all of the four models was located on the crestal region around the neck of the implant adjacent to the pontic.

四单位种植固定桥应避免远中悬臂设计方案，在本实验所似设的条件下，植入方案力学分布更为均匀。

As the development of construction equipment and cantilever concreting, construction technique for long-span continuous girder bridge s has been greatly improved.

随着悬臂施工技术和施工设备的进步和完善，大跨度连续梁式桥的施工技术日趋成熟，先进的施工技术又能影响和促进桥梁设计水平的提高和发展。

It is important for us to make the theoretical calculation of precamber and deflection and obtain manufacture elevation and construction elevation of each girder segment, according to design drawings, construction management plan and prefabricating geometry, at the same time, in the light of different kinds of calculating parameters.

所以对采用悬臂拼装的连续梁桥来讲，在预制梁段阶段对台座的标高进行精确的测量，正确计算桥梁线形高程，根据设计图、施工组织设计以及预制线形，按照各种计算参数，进行预拱度及挠度的理论计算，得到各节梁段制造与施工安装高程非常重要。

Aiming at the existing situation that it is high difficulty of using cradle casting construction of continue box beam bridge,it introduces the laying out methods of deform detection point and pressure detection point in the construction of the project,and analyses the detection effect.

针对连续箱梁桥采用挂篮现浇悬臂施工难度大的现状，介绍了其工程施工中变形测点和应力测点的布置方法，并分析了其监控结果，通过现场施工，证明了该桥的施工控制达到了设计要求。

In 1928, Freysinet used the cantilever concept to construct the springings of the arch rib in the Plougastel Bridge.

在1928年，弗莱西奈运用悬臂的概念，在德国普鲁加斯泰尔桥修筑了拱桥的起拱部分。

Based on the design case of Shuangjianghe bridge on the segment from Tongdao to Jili in G209 national high-way which was being built, the linear cantilever slabs was made to fit transition curve of the route.

以国道G209通道至吉利段改造工程中的双江河大桥设计实例，研究位于小半径缓和曲线上预制空心板梁的外悬臂折线逐步逼近缓和曲线线形，与桥上路线线形一致。

During the period of construction by the cantilever erection construction method, bridge experiences not only the process of generating girder in the stage of T rigid frame, but also the process of system transformation, so bridge has experienced a great complex stress process, in order to ensure the security of bridge during the whole stage of construction, the stress control and geometry control must be made during the stage of construction of bridge.

近些年来，我国随着经济的快速增长，出现了建造大跨度桥梁的高潮，预应力混凝土技术的迅速推广应用以及建造预应力混凝土连续梁桥的各种先进施工方法应运而生，加快了桥梁的施工进度，使得预应力混凝土连续梁桥的跨越能力不断增大，悬臂拼装施工方法就是在这种背景下产生并发展起来的。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。