90分钟零误差！万吨跨陇海铁路公路特大桥完成转体

90 minutes with zero error! Completion of Swivel of 10,000-ton Highway Bridge Crossing Longhai Railway

90分钟零误差！万吨跨陇海铁路公路特大桥完成转体

90 minutes with zero error! Completion of Swivel of 10,000-ton Highway Bridge Crossing Longhai Railway

中新网郑州8月11日电 (阚力)11日午间，历时90分钟，总重量15200吨的新伊高速上跨陇海铁路转体桥成功转体，实现零误差转体对接。

Source: www.CHINANEWS.COM Zhengzhou, August 11 (Kan Li) 11 noon, after 90 minutes and a total weight of 15,200 tons, the Xinjiang-Iraq Expressway over the Longhai Railway rotary bridge has successfully turned and achieved zero error rotary docking.

作为河南省“13445工程”重点项目，全长81.2464公里的新伊高速公路，起自洛阳新安，经洛阳宜阳，止于洛阳伊川，穿越陇海铁路、郑西高铁等铁路，跨越洛河、伊河等河流，是未来洛阳市“第二绕城高速”的重要组成部分，今年年底正式建成通车。

As a key project of " 13445 Project" Henan Province Xinyi Expressway with a total length of 81.2464 km starts from Xin 'an in Luoyang, passes through Yiyang in Luoyang, ends at Yichuan in Luoyang, crosses Longhai Railway, Zhengzhou-Xi'an High-speed Railway and other railways, crosses Luohe River, Yihe River and other rivers. It is an important part of Luoyang City's "Second Ring Expressway" in the future. It was officially completed and opened to traffic at the end of this year.

由中铁十局二公司承建的该转体桥是上述高速项目全线重点控制性工程，转体部分为全长130米的T型刚构，曲线半径631.82米。据悉，该转体桥采用“先平行铁路支架现浇，后平面转体”的方法，逆时针转体65.36度，与陇海铁路轴线交叉角度为66.2度。

The swivel bridge constructed by the Second Company of China Railway 10th Engineering Group Co., Ltd. is the key control project of the whole line of the above-mentioned high-speed project with a 130mT-shaped rigid frame and a curve radius of 631.82m. It is reported that the swivel bridge adopts the method of "cast-in-place parallel to the railway support first, and then plane swivel," turning 65.36 degrees counterclockwise, and crossing angle with the axis of Longhai Railway is 66.2 degrees.

众所周知，陇海铁路是中国境内一条国铁Ⅰ级繁忙干线铁路，客货共线，串联西北、华中和华东地区，为国家“三横五纵”干线铁路网的重要一横。

As is known to all, the Longhai Railway is a national railway grade I busy trunk railway in China, featuring passenger and freight lines, connecting northwest, central and east China. It is an important horizontal line of the national "three horizontal and five vertical" trunk railway network.

据中铁十局二公司相关负责人介绍，此次转体位于河南省洛阳市新安县境内的陇海铁路铁门站附近，此处平均每20分钟就有1趟列车飞驰而过，施工难点在于作业时间短、跨度大，临近铁路最近墩柱仅有9.5米，作业场地极为狭小。

According to the relevant person in charge of China railway bureau ten companies within the territory of the swivel is located in the henan luoyang xinan longhai railway iron gate station nearby, here is a train every twenty minutes on average speed, the construction difficulties lies in the operation time is short, big span, near the railway pier is only 9.5 meters, recently very narrow job site.

该负责人表示，为了不影响列车正常通行，将对铁路运营的影响降到最低。项目团队选择在列车流量小的中午进行桥梁转体全封闭施工作业，利用BIM(建筑信息模型)软件绘制建模并同步模拟转体过程，对转体过程全程检测，极大程度上降低了超转的可能性。

The manager said that in order not to affect the normal operation of trains, the impact on railway operations will be minimized. The project team chose to carry out the totally enclosed construction operation of bridge rotation at noon when the train flow is small. BIM(Building Information Model) software was used to draw and model and synchronously simulate the rotation process. The whole process of rotation was detected, which greatly reduced the possibility of over-rotation.

在转体施工前，项目技术团队成立专项实施小组，组织召开了13余次技术交底会议，进行严格讨论、方案评审，对技术方案进行反复论证优化，并于8月9日进行了预转测试。

Before the construction of the rotary, the project technical team set up a special implementation group, organized and held more than 13 technical disclosure meetings, conducted strict discussion, program review, repeatedly demonstrated and optimized the technical program, and carried out the pre-rotation test on August 9.

转体过程中，现场技术人员对转体梁的转盘上布置刻度、编号，并安装速度传感器和摄像头，实时监测桥体转动情况。其间，转体桥以每分钟1.2米的均速同步缓缓转动，逆时针转体65.36度，最终实现转体桥的精准对接。

During the swivel process, the on-site technicians shall arrange scales and numbers on the turntable of the swivel beam, and install speed sensors and cameras to monitor the rotation of the bridge body in real time. Meanwhile, the swivel bridge rotates slowly and synchronously at an average speed of 1.2 meters per minute, turning 65.36 degrees counterclockwise, finally realizing the precise docking of the swivel bridge.

该项目经理王宁表示，转体梁的原理就像推磨盘，首先要在桥墩上装上转盘，利用千斤顶按照毫米级误差标准拉动桥转动，将沿铁路平行方向建好的桥体旋转后与引桥对接。

Wang Ning, manager of the project, said that the principle of the rotating beam is like a grinding plate. First, a rotating plate is installed on the bridge pier, and the bridge is pulled by a jack according to the standard error of millimeter level, and the bridge is connected to the approach bridge after rotating along the parallel direction of the railway.

（来源：中国新闻网）

(Source: www.CHINANEWS.com)