结构工程

This project provided very good example for the construction of steel structure of large henceforth abnormity.

本工程为今后大型异形钢结构的施工提供了很好的范例。

In this paper combined with practical works the bearing capacity of composite foundation of deep-mixing piles in adamic earth region is studied based upon BP network.

指出BP神经网络是一种旨在模仿人脑结构及其功能的信息处理系统，根据收集的工程实例，应用BP神经网络对红粘土地区深层搅拌桩复合地基的承载力进行了研究，分析探讨了各主要因素对地基承载力的影响，为其进一步的研究奠定了基础。

There are many difficulties in getting parameters when using Q system. In addition, the compound of strike, angle of gradient and discontinuities were not taken into consideration.

根据分级结果对比发现，Q系统具有分级指标获取困难的特点，且未能考虑边坡走向、坡角与结构面组合情况及坡高等因素对边坡稳定性的影响，难以适应边坡工程中稳定性评价的要求。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

But people also show solicitude for the safety problem of the glass curtain wall. This paper presents the detection state for glass curtain wall at home and abroad and comprehensively evaluates using safety and affecting factor to building of curtain wall glass, st...

文中介绍了国内外玻璃幕墙的检测状况，采用现场检测评估技术，对已建幕墙工程进行现场试验、检测、分析，综合评价幕墙玻璃、结构胶、玻璃幕墙整体结构的使用安全性能及对建筑的影响因素。

At present light thin plate retaining wall is a very popular retaining structure. So its engineering quality and healthiness of the existing structures are very important to ensure the safety stability of infrastructure and security of lives and possession.

轻型薄板挡土墙是目前应用较为广泛的一种支挡结构，其工程质量及在役结构的健康运行对保证基础设施的稳定与人民生命财产的安全具有重要的意义。

The hydrodynamic performances of the new structures are examined and compared. Some optimal parameters of the new perforated breakwaters are suggested for engineering design.

对两种新结构的水动力特性进行了分析和比较，给出了这两种新结构在工程设计应用上的建议参数。

Work of this paper tries to set up a reference for its application by designing a Geiger type dome.

本文旨在通过对一个Geiger型索穹顶结构的设计，为此类结构的工程应用提供参考。

It is a new try to take the methods of rock and mineral analyses, such as polarizing microscope and X-ray diffraction, to the building concrete which can be regarded as amanmade rock and to evaluate the durability of a building construction as a supplementary means of physics, mechanics and computation check.

将混凝土看成一种人造的岩石，运用岩矿测试方法，对混凝土进行系统研究，并应用到建筑工程结构耐久性评价中，作为物理和结构验算的一种补充，是一种新的尝试。

Furthermore, isolation design can effectively decrease section size, reinforcement, engineering cost and story drifts of superstructures.

指出隔震设计可以有效减小上部结构的截面尺寸和配筋，降低工程造价以及减少上部结构层间位移。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。