查询词典 girder

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

But publications about technical development on monitoring on-line the health of anchor screw s in the cast steel pedestal for prestressed concrete track girder can not be found.

跨座式单轨交通系统是日本和欧美等发达国家在20世纪60年代提出的一种先导城市交通形式，但在PC轨道梁铸钢支座锚固螺杆健康在线监测方面的技术开发却至今未见大量报道。

The hanging basket s are the main equipments in the cantilever casting construction of large-scale prestressed concrete continuous rigid bridge and continuous girder bridge.

挂篮是目前大跨径预应力混凝土连续刚构桥和连续梁桥在悬臂浇注施工时主要采用的施工设备。

The two-dimensional transient finite element analysis and thermal responsecalculation were carried out for prestressed concrete box girder with irregular crosssection. Various boundary conditions were discussed in detail.

在有限单元分析中，首次推导出混合边界单元的计算公式，从而将第二类边界条件和第三类边界条件统一起来，以第三类边界条件的形式施加到单元边界上。

Stockwell would later learn that the bullet had been shot into the air, ricocheting off a girder and striking two students.

斯托克韦尔后将得知：子弹打空，击中一根柱子后弹飞了，再击中两个学生。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。