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.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, concrete's shrink and creep is distinct.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, creep and shrink of concrete is very distinct.
因此，如何控制好结构的拱度也是一个亟待解决的问题。
Therefore, how to control the structure of the arch is a serious problem.
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.
上部结构的建筑高度为3英尺6英寸，有19英尺8英寸显著的上拱度。
The superstructure has a depth of 3 ft. 6 in. with a marked camber of 19 ft. 8 in.
文章主要从拱度的成因、结构的材料等几个方面来谈谈对结构拱度的控制。
From the causes of not smooth arch, the structure of the material, this paper talks about several aspects of the structure camber control.
为保证列车行驶的平稳和安全性，高速铁路桥梁的上拱度有十分严格的限值。
To ensure the stableness and security of the train, the high speed railway's bridge camber must be extremely limited.
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.
讲述悬臂施工设置预拱度的原理，从而推导曲线桥悬浇施工时预留位移的一般计算公式。
Describe the principles of setting camber in the process of cantilever construction and deduce the general formulas for its calculation.
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.
本文在对现行的基于相对挠度的预拱度计算设置方法进行分析后，进而提出了新的绝对挠度法。
The pace analyzes the current pre-arched calculation and installation method based on the relative deflections, and proposes a new absolute deflection method.
根据使用三年后的罐基变形监测结果，分析了油罐地基的平面倾斜、非平面倾斜及罐基拱度特性。
According to the testing data after three years, the plane inclination, non-plane inclination and arch degree of the oil tank foundation are analyzed.
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.
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.
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.
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.
本实用新型就是提供一种可有效延迟空泡的分离，并可延长螺旋桨桨叶使用寿命的截面拱度比非线性分布式船用螺旋桨。
The utility model provides a cross section camber ratio nonlinear distributed Marine propeller which can effectively delay the separation of the cavity bubble, and prolong the service life thereof.
本文通过广泛的资料收集和合理的理论分析与计算，主要进行了以下几项工作：(1)较细致地分析了影响预应力混凝土桥梁起拱度的各项因素。
With abroad data and rational analysis, the major work is described as follows: (1) Influencing factors of reversed arch in prestressed concrete beam is analyzed at length.
同时，除相对飞高外，翼剖面的厚度和拱度对地效翼的气动力特性也有重要影响。进而，作者对应用CFD分析或辅助地效翼气动力风洞试验进行了探讨。
The calculation results also showed that besides the relative ground clearance, the ratios of thickness and camber of wing profile have significant influence on the aerodynamics of WIGs.
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.
当今对公路路面的平整度、路拱坡度和密实度等的要求越来越高，而早期的摊铺机自动找平机现已不能满足要求。
Nowadays, the requirements for road surface smoothness, amount of crown and compactness are becoming more and more strict, which the automatic leveling capability of early spreaders can no more meet.
双拱的静力三分力系数、变异性以及受湍流度的影响等均与两拱间距宽度比及竖向相对位移有关。
Arch forces coefficients and fluctuating buffeting forces are mainly decided by the space width ratio and the relatively vertical displacement.
折度是计量声调曲拱的基本单位。
通过一连拱隧道应用，计算其衬砌碳化可靠度，提出了经济合理的维修方案，验证该方法的可行性。
The reliability of concrete carbonation is calculated and economic reasonable maintenance plan is selected by the analysis and predictive method for...
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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