查询词典 arch

This paper is carried out to analyze the buffeting of long-span steel arch bridge in operation and erection stage. The research is mainly focused on the following aspects: Based on the present AR method, the AIC rule is used for fix the rank of the AR model to improve the simulation precision. Take into account that the wind speed spectrum is vary with the height for the long-span steel arch bridge, simulate the fluctuating wind field.

主要工作有以下几个方面：通过对现有的AR法进行改进，采用最小AIC(A-Information Criterion)准则准确识别模型阶数，提高AR法的计算精度，并考虑大跨度钢拱桥风速谱随高度变化的特点，实现了对三维空间脉动风场的有效模拟。

For the asymmetries and high water pressure, the safety of Jinping High Arch Dam is one of key issues in the design and construction of Jinping High Arch Dam.

这些不对称性和高水压使锦屏高拱坝的安全性成为锦屏拱坝建设中最重要的关键技术问题之一。

Meanwhile, the connecting nodes of the arch foot and the tie bar are structurally optimized to solve the problem of complicated forces on the arch foot .

同时，对拱脚和系梁连接节点处进行了结构优化，解决了拱脚处受力复杂的问题。

The main structure of Caiyuanba Yangtze Bridge in Chongqing, up to date the largest-span tie bar arch bridge, is formed by two side tie bars and one middle tie bar which unite the Y-shape rigid framework and arch rid . Therefore, tie bars are one of the key components.

重庆菜园坝长江大桥是迄今为止世界上跨度最长的系杆拱桥，该桥的两根边系杆和一根中系杆将南北两岸的Y型刚构和中间的拱肋连成一个受力整体，构成该桥的主结构，因此系杆是该桥关键受力部位构件之一。

On the North River Bridge Weicheng CFST arch main bridge construction S233 Provincial Highway Bridge (Gaoyou Depalletizing three to Jiangdu Port Section) under a span of 80.6m CFST arch, rigid tie beam for 1.4m × 1.8m pre-stressed box girder, cast-in-place method using stent Construction .

浅谈北澄子河大桥钢管砼拱主桥施工大桥为S233省道的一座跨径80.6m的下承式钢管混凝土拱桥，刚性系梁为1.4m×1.8m预应力箱形梁，采用支架现浇方法施工。

In this thesis, overlying strata structure combined"voussoir beam"with"half arch"have been put forward for first time, and mechanism and control features of different forms of"half arch"structure and"S—R"stability for the voussoir beam are analysed.

本文在现场实测研究的基础上，采用相似模拟实验、有限元数值模拟和理论分析方法对综放采场上覆岩层的变形和破坏发展过程进行了系统深入的研究。

Continuum topology optimization method for arch axis design of arciform aqueducts;2. The effects of deformation and internal forces produced by transverse bias of arch axis are analyzed by simulative computing.

针对某上承式钢筋砼箱板拱桥建成后的拱轴线与设计拱轴线发生横桥向偏离，通过计算仿真分析探讨拱轴线偏离对主拱内力和变形的影响，提出了几种改善主拱受力状态的措施，为同类拱桥的施工偏差和加固维修提供借鉴。

The Dongping Bridge is a new arcuated built-up system bridges. Half through steel box tied arch and prestressed concrete continuous beam were connected directly, and then the bridge becomes the Cooperation System Bridge with vice-arch.

东平大桥是一种新型的拱梁组合桥，由中承式钢箱系杆拱与预应力混凝土连续梁直接连接形成协作体系，并保留施工过程中的拉杆形成副拱。

Based on the further study of deformation rule of MgO-mixed concrete, the theory of 3-D finite element simulation analysis of MgO-mixed concrete arch dam is discussed in this dissertation combining with the example of YangChun MgO-mixed concrete arch dam. Moreover, the pertinent simulation analysis software is developed by the author and his colleagues. The main contents are as follows.( 1 ) Transformation rules of MgO-mixed concrete are studied. Hyperbola model of MgO-mixed concrete"s autogeny deformation, especially deduce of the model"s parameter and building process of the model are analyzed in detail.

本文结合阳春外掺MgO混凝土拱坝，在深入研究外掺MgO混凝土变形规律的基础上，详细论述了外掺MgO混凝土拱坝三维有限元仿真分析的原理，与相关人员一起研制了有关仿真分析软件，其主要研究内容如下：(1)研究分析了MgO混凝土的变形规律，并重点对MgO混凝土的自生体积变形的双曲线模型，尤其对模型中参数变量的推求及模型的建立过程作了详细分析。

The result indicated that reasonably designing of the cable in the cable-stayed arch bridge can reduce the axile force of the entire arch and obviously reduce the hogging moment and the shearing force the skew back.

分析结果表明：与普通拱桥相比，合理的设计斜拉拱组合桥中斜拉索的参数，能够一定程度地降低整个拱肋的轴力，减小拱脚的负弯矩和剪力。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了