建立有底座吸振器和两端固支梁主系统耦合的数学模型。
A mathematical model of the system composed of the vibration absorber with a base and coupled with an ends-fixed beam is established.
主要原因是穿过圆钢管的梁主筋与钢管内的混凝土有很好的粘结；
There is good bond between the concrete in steel pipe and the beam' s main steel bars passing through the small holes in steel pipe.
给出了弹性支承桥梁和车体的振动方程并通过对具有弹性支座简支梁主振动的分析，得出了梁主振型的解析公式。
The principal vibration of a simple beam with elastic supports was analyzed and the analytical formulation of normal vibration mode was derived.
下层甲板的主梁必须立即用螺旋千斤顶进行支撑。
The main-beams of the lower deck had to be shored with screw-jacks forthwith.
平均剑身长达三英尺，剑体焊接精良，整个剑的主梁与剑刃由尖端的冶炼工艺锤锻而成，钢与铁按照完美的比例整合一体。
Averaging about three feet, blades were pattern welded, a sophisticated technique by which twisted rods and strips of iron or steel were hammered together.
安装前先将焊在主梁腹板上，运输时捆绑用的吊钩。
The welding on the girder web first before installation, transportation lashing hook.
跨度大的主梁，由于运输条件所限，是分段制造的。
Large span girder, due to the limited transport conditions, is the production of.
安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
计算结果指出：门机结构总体应力水平较低，其严重受力件主梁具有较大的强度富裕度，不必更换。
The results show that the crane is unnecessary to replace for its low total stress level and large strength margin of the main girder (main stressed part).
箱型结构的主梁，内腔无法涂漆防锈蚀，为了防止水汽侵入腐蚀主梁内腔，必须保住主梁内腔的密封性。
The box type structure, cavity cannot antirust paint corrosion, in order to prevent moisture intrusion corrosion beam cavity, sealing the inner cavity of the main girder must keep.
作为叠合梁斜拉桥，四方台大桥的主梁由下部的工字钢和上部的混凝土行车道板组合而成。
Harbin sifangtai bridge is a cable-stayed bridge whose girder is composed by steel i-beam above and concrete deck slab below.
主跨加劲梁为钢箱梁，边跨加劲梁为预应力混凝土箱梁。
The stiffening beams of the side spans are prestressed concrete box beams.
采用多目标、多约束的优化方法，以悬臂施工主梁的斜拉桥为例，建立了施工阶段的优化模型，并给出算例。
Based on the cable-stayed bridge using method of cantilever, the paper establishes the optimization model of construction phase with multi-objective and multi-constraint and gives the example.
本文简要介绍了该桥主梁设计中的一些问题及光弹模型试验的结果。
Here is given a brief description of its design with some results of photo-elasticity testing.
刮板取料机构安装在主梁下面，取料方式为全端面取料。
Scraper feeding mechanism is installed below the main girder, feeding way is take for full face.
主梁的一端支撑在中心柱上，另一端支撑在端梁小车的端梁上。
Girder at one end of the support on the center column, the other end of the support beam on beam cars.
混凝土的收缩徐变和车辆超载是大跨度连续梁桥主梁下挠严重的主要因素之一。
The creep is the main reasons why the deflection of the girder is larger than that of code.
但是，如果设备口、加强垫及主梁相互防碍，在事先得到买方批准后可变更其尺寸。
However, if nozzles, reinforcement pads, and main seams should interfere with each other, these dimensions may be changed upon Purchaser's approval.
单主梁桥架上只有一个轨道，所以只找出两端各一点的标高相同即可。
Single girder bridge is only one track, so only to find a point at both ends of each elevation can be the same.
应力平衡法以主梁弯矩合理为目标，通过主梁上下缘应力平衡来求得拉索索力。
The stress balance method aims at the girders' reasonable moment, getting the cable forces by balancing the stress in girder's upper and lower margin.
绝大多数的桥梁中主梁所采用的横截面都是相同的。
Most of the main beams are designed as the single section for the newly-built Bridges.
但这些较厚的层压板不易进行灌注，同时，由于传统环氧系统的固化放热还会导致在主梁生产过程中产生起皱等品质缺陷。
These thicker laminates are more difficult to infuse and the exotherm development of traditional epoxy systems can lead to exotherm wrinkles in spar caps.
如是垫在主梁下，则除主梁上拱度一项外，其余项目也都可以检查，同时还可以检查大车运行机构的安装质量。
If the cushion in the main beam, in addition to the main beam camber, the rest of the project can also be checked, but also can check the installation quality of the operating mechanism of the cart.
在门架严重扭曲时的主梁、支腿、下横梁、台车及他们之间的连接件均会承受很大的扭曲应力。
When the door frame is seriously distorted, the main beam, the supporting legs, the lower beam, the trolley and the connecting piece of the frame can bear large distortion stress.
否则应把支架垫在主梁的下水平盖板靠近主梁两点变高处。
Otherwise, the bracket should be placed in the bottom of the main horizontal cover plate near the main beam two points to high.
料耙支撑于主梁侧面的方形轨道上，料耙的塔架设在主梁上。
Material rake supports in girder on the side of the square, is expected to rake in the tower is located in the main girder.
其次，本文对主梁进行了模态分析，研究了主梁的振动特性以及运行机构底座处下盖板在振动的影响下，产生裂纹的可能性。
Secondly, carry on the mode analysis to the girder, research the girder vibration property and the probability of crackle takes shape in the vibration effects of traveling organization pedestal.
主梁是葫芦门式起重机的主要受力部件，主梁的质量直接影响到整机的使用寿命。
The main beam is the main hoist gantry crane force components, main beam directly affects the service life of machine.
本文系统地阐述了不同主梁刚度的自锚式悬索桥施工控制系统的设计思路和主要内容。
This paper expounds the design idea and main contents of construction control system in Self-anchored Suspension Bridge with different girder stiffness.
三主梁模型适用于结构动力特性分析，但不能直接用作动力分析模型。
It can also be applied to calculating the dynamic characteristics, but not suitable for the dynamic model.
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