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prestressed concrete相关的网络例句

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与 prestressed concrete 相关的网络例句 [注:此内容来源于网络,仅供参考]

First chapter chooses the prestressed concrete continual box beam structure for this design recommendation plan.

第一章选择预应力混凝土连续箱梁结构为本次设计的方案。

With its excellent section characters, the prestressed concrete box beam plays a main role in the girder bridge.

预应力混凝土箱梁以其优良的截面性质在梁桥中占据了主要地位。

This dissertation is devoted to the in-plane ultimate load capacity of the longspan prestressed concrete box frame bridges.

本文分析了大跨度预应力混凝土箱形截面刚构桥面内极限承载力,主要完成了以下工作

Prestressed concrete continuous box girder bridges are widely used in middle and long span bridges,and will be more widely used.

0前言预应力混凝土连续箱梁桥在中等、大跨径桥梁中得到广泛使用,且有着广阔的应用前景。

The thermal effect in box girder of prestressed concrete can not be ignored.

预应力混凝土箱型轨道梁桥的温度效应不容忽视,在一定程度上甚至会超过活载作用成为设计的控制因素。

Based on the differences between the design value and the survey of the bridge deck elevation in constructing the pre-stressed and so on working condition, the model parameters are identified by ANN, and the beam camber of different sections are given. The results demonstrated that the ANN is efficient and the theoretical results fit well with that of forecasting the beam camber in construction.In this thesis, aim to the beam axis shape be exactitude for design, the internal force of the beam be appeased by design request, the concept of modem cybernetics is applied, At the same time, the effecting parameter has collected. The paper build the ANN model in predicting the beam camber an construction and discuss indetail the extraction of inputting nodes information when quoting the fundamental principle of ANN model and introducing research process of the improved BNN. According to them, ANN is applied in the construction control of prestressed concrete continuous bridge. It is successful for used in the No. 4 bridge of Xiangfan bridge over-crossing Hanriver brideg. To predict the construction camber of by ANN method is useful and effective.

本文以大桥成桥线形满足设计要求和成桥内力控制在设计容许范围内为目的,运用现代控制理论的思想,引用神经网络基本原理,详细介绍BP神经网络的研究过程,从而建立预应力混凝土连续梁桥施工预拱度的神经网络模型,并详细讨论了模型的神经网络结点信息的提取,在工程实例的基础上进行了数值计武汉理工大学硕士学位论文算,数值表明,将神经网络应用于预应力混凝土连续梁桥施工控制,获得了满意的结果,在预应力混凝土连续梁桥施工控制技术研究方面,具有方便有效、精度高的优点,具有良好的应用前景。

In recent years many prestressed concrete highway bridges in different types have been built in this country, such as simple supported girder bridges, balanced cantilever T-frame bridges, continuous girder bridges, continuous rigid frame bridges, cable-stayed bridges and composite arch bridges.

近几年来,我国建造了多座预应力混凝土桥,结构型式有简支梁、T型刚构、连连梁、连续刚构、斜拉桥与组合式拱桥等。在每种桥型中,选择具有代表性的桥梁,对其结构特点,设计与施工新技术,加以分析讨论。

Chlorides, chloride-bearing or other steel-corrosion-promoting materials may not be added to reinforced or prestressed concrete.

2氯化物,含氯化物,或其他加强钢铁腐蚀的材料不得添加到钢筋混凝土或者预应力混凝土中。

Temperature variation exerts great influence on the bridge alignment during the long-span prestressed concrete continuos girder bridge construction.

在大跨度预应力混凝土连续梁桥的施工过程中,温度变化对桥梁结构的线形有较大的影响。

Based on the experience of compiling the program, the paper discussed some topics which should been taken note of while compiling a plane member structure FEM program that took the geometric nonlinearity into account as well as the material nonlinearity. With this program, the paper analyzed the effect of the factors on the anti-bending capability of externally prestressed concrete beams and come into some useful conclusions. The factors included: the rate of ordinary steel bars, the initial prestress of the external tendons, the shape of the external tendons, the position and number of deviators and the number of segments.

结合编程实践,本文讨论了编写考虑几何非线性和材料非线性的平面杆系有限元程序应该注意的一些问题,并应用所编的程序,对体外预应力混凝土梁的抗弯性能进行了普通钢筋配筋率、体外索的初始张拉力、体外索的配筋形式、转向块的布置和节段的数目等五个影响因素的分析,得出了一些有益的结论。

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从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

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