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Measurements on Lifting and Fixing of Nuclear Reaction Dome

机译：核反应圆顶升降和固定的测量

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摘要

Measurement on spherical construction is a difficult task in engineering survey. The issue about how to overcome the disadvantages of construction site and to ensure the measurement precision and accuracy, as well as the project quality, is widely concerned. Nuclear reactor is an important construction for nuclear power station, and the dome is an important component for the reactor. Dome is not only a safe shell but also the place for fixing various equipments and parts. The difficulty for getting high precision fixing is due to its large volume and heavy weight. We introduce a measurement method for fixing a dome with diameter of 37m and weight of 143t at the top of a 44.83m tall building. Since dome fLxing is a complex project which requires precision construction, a reliable accurate positioning and measurement plays very important role to accomplish the complex three-dimensional structure as designed. We carefully scheduled the control surveying for the whole lifting and fixing process. We positioned the reference points for the inside parts of dome, also for the crane and the lifting site, and then measured the height and the radius of the dome layer by layer. Our practical measurements have shown a typical engineering example for colleagues and also provided a reference case for further investigations.
机译：球面建设的测量是工程调查中的一项艰巨任务。关于如何克服施工现场的缺点并确保测量精度和准确性以及项目质量的问题。核反应堆是核电站的重要建筑，圆顶是反应器的重要组成部分。圆顶不仅是一个安全的壳牌，而且还有一个固定各种设备和零件的地方。获得高精度固定的难度是由于其大容量和重量大。我们介绍了一种测量方法，用于在44.83米高的建筑物的顶部固定直径为37米和重量为143T的圆顶。由于圆顶FLXING是一个需要精确结构的复杂项目，因此可靠的准确定位和测量起到设计成复杂的三维结构的重要作用。我们认真预定了整个提升和固定过程的控制测量。我们也定位了圆顶内部的参考点，也适用于起重机和提升部位，然后通过层测量圆顶层的高度和半径。我们的实际测量显示了同事的典型工程例，还提供了参考案例，以进一步调查。

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