安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
如是垫在主梁下，则除主梁上拱度一项外，其余项目也都可以检查，同时还可以检查大车运行机构的安装质量。
If the cushion in the main beam, in addition to the main beam camber, the rest of the project can also be checked, but also can check the installation quality of the operating mechanism of the cart.
通过对先张法预应力梁板预拱度产生的过程进行分析，揭示预应力梁板预拱度产生的内在原因。
The paper analyses the formation process for pretensioning prestressed hollow plank precamber, announces inside reason for prestressed hollow plank precamber to public.
接着介绍了现浇梁支架的施工预拱度计算方法及设置方法。
Then calculating methods on construction camber of cast-in-place beam scaffold and setting methods are introduced.
本文论述起重机主梁的上拱度及预拱曲线的基本原理，介绍了国内外起重机技术标准中规定的上拱度值。
This paper discusses the question of crane main girder camber and the pre-cambering curve, introducing camber values stipulated in related crane standards in China and abroad.
理论研究方法有拱梁分载法、刚体极限平衡法、变形体法、可靠度理论等。
The theoretical research approaches involve arched girder load split process, rigid-body limiting equilibrium process, plasmodium process, reliability theory, etc.
主要叙述了汾离高速公路采用预应力装配式混凝土T型梁标准结构的起拱度控制方法。
The paper mainly introduced the control method of standard structure springing for assembling prestress concrete t beam.
利用BP人工神经网络确定主梁预拱度；
The construction camber for main beam can be determined by BP artificial neural network.
这种大型特种设备建造施工难度大，特别是主梁的上拱度控制、大型箱体结构的变形控制都较一般结构难度大。
As a type of special equipment, the construction of large-scale cranes is very difficult, especially the main beam camber control and the deformation control.
在对常规多拱梁法和可靠度理论进行了分析后，提出了随机多拱梁法。
After analyzing the conventional multi-arch-cantilever method and reliability theory, the stochastic multi-arch-cantilever method has been raised.
在对常规多拱梁法和可靠度理论进行了分析后，提出了随机多拱梁法。
After analyzing the conventional multi-arch-cantilever method and reliability theory, the stochastic multi-arch-cantilever method has been raised.
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