查询词典 trellis girder

The principle of reinforcing girder bridge with carbon fiber sheet and stress characteristics are introduced.

在对碳纤维加固梁式桥的机理及受力特点进行介绍的基础之上，就其施工所用材料、施工工艺深入分析，并给出有益的施工建议，对于碳纤维布加固技术的应用推广具有一定的指导意义。

In addition, based on the theory calculation and analysis, the fact is verified by on-site load testing of ZhongXian Yangtze River Bridge, that the bridge decks work with Steel Tube truss Stiffening girder.

在理论分析的基础上，通过现场荷载试验对理论计算结果进行了验证，验证结果证明了桥面系参与工作的事实。

The detailed process of model updating and validating is discussed in terms of reduced scale specimen of the steel box girder in longitudinal stiffening truss of a long span bridge.

以实验室的大跨桥梁结构钢箱梁纵向加劲桁架缩尺试样为研究平台，具体讨论了多尺度模型修正和验证的实施过程。

However, the torsion rigidity and aerodynamic stability of the steel truss stiffening girder usually does not meet the requirement of wind-resistance design.

但其扭转刚度以及气动稳定性能往往难以满足抗风要求。

Finally, the erection method of three key stages, including the first and second segment near the pylon, the standard segment as well as the closure segment of steel stiffening truss girder, was studied.

最后，研究了靠索塔首次节段、标准节段以及合龙段等3个关键阶段的架设方案。

Stern frame and stern tube shall be supported and stiffened by girder, floor, platform and bulkhead.

尾柱、尾轴管由桁材、肋板、平台及舱壁支持和加强。

A beam girder from section-I and hydro-formed tubes welded together in order to strengthen the steering head.

来自截面梁梁- I和水力焊接在一起，以加强督导负责人组成的管。

A detailed model of non-linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non-linearity are considered, is proposed in this paper. Based on several numeric examples investigated by the Galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. Another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived. The smallest excitation amplitude,the transient state and steady state resonance amplitudes, and the changing characteristics of the axial force are obtained by using harmonic balance method. According to numerical examples calculated by numerical integration method, the effects of the inner damping of the stay cables are investigated.

本文创新地提出了斜拉桥拉索-桥面耦合参数振动模型，推导了索-桥耦合非线性参数振动方程组，联合Galerkin法及数值积分方法，对各种特性的拉索进行了数值求解，得出了影响拉索参数振动的各种因素；提出了斜拉索受轴向端激励参数振动模型，导出了模型的非线性振动方程，使用谐波平衡法得出了产生参数振动需要的最小激励幅值、共振时瞬态及稳态的振动幅值及索拉力的变化特性，并用数值积分方法对实际斜拉桥拉索进行了计算，分析了拉索阻尼对参数振动的影响。

Bridge construction ; prestressed concrete ; continuous box girder ; bridge monitoring ; slab crack

桥梁施工；预应力混凝土；连续箱梁桥；桥梁监测；腹板裂缝

A timber or girder fastened above and parallel to the keel of a ship or boat for additional strength.

内龙骨固定在船或舟的龙骨之上或与之平行的木材或桁，以加强船的力量

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。