“先简支后连续”体系梁在公路及市政桥梁建设中得到广泛应用。
The "First Simply Supported Then Continuously Supported" system girder is widely applied in road and urban bridge construction.
临时支座的拆除是先简支后连续结构体系施工过程中的关键工序之一。
The removal of temporary bearings is one of the key procedures in the construction of transforming a simply-supported bridge structure into a continuous one.
试验证明，利用体外预应力技术加固混凝土简支梁桥，可以明显提高承载力及延性。
The test results show that the externally prestress technology can be applied in strengthening concrete simple span beam to enhance its bearing capacity and ductility.
本文介绍我国一种新型单梁简支空中横移梁式铁路架桥机的总体结构设计及其结构荷载试验。
This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.
方家寨大桥采用先简支后连续的施工方法，通过逐次接长连续梁、逐次拆除临时支座来实现结构体系转换。
The removal of temporary bearings is one of the key procedures in the construction of transforming a simply-supported bridge structure into a continuous one.
通过实例，介绍简支梁(板)桥改造的实施方式。
It also introduces implementation of simple supported beam (slab) bridge reforming via practical instances.
研究了简支梁在两个激振力作用下的组合谐波响应。
The combination resonance of a simple supported beam under two excitation forces was studied.
跨径是影响公路简支斜梁桥地震反应的另一个重要参数。
Span is another important parameter for seismic response of skew highwaybridges.
作为算例计算了四边简支菱形板的自振频率和临界载荷。
The critical load and natural frequency of rhombus plates with simply supported at all edges are calculated.
简支钢混凝土组合梁的承载力是组合梁最重要的性能之一。
The bearing capacity is one of the most important performances for the steel and concrete composite beams.
本文研究由于大挠度引起的曲率非线性对简支梁振动的影响。
We investigate the effect of nonlinear curvature on vibrations of an elastic simple supported beam and roller with large deflection.
文中建议了考虑活动支座摩擦力影响的简支梁桥整体分析模型。
An analytic model including effects of frictional force at movable supports is suggested.
以简支梁为例，通过声辐射模态研究简支梁声辐射的有源控制。
With an example of simply supported beam, it is presented to active control structure-borne sound by mean of radiation modes.
同时对部分预应力简支梁与全预应力简支梁作了经济比较和分析。
Economical comparison and analysis are also conducted between partial prestressed and full prestressed simple-supported girders.
讨论了铁路多跨简支梁桥不同计算图式对横向振动分析结果的影响。
The effect of different mathematical models on lateral vibration analysis of multi-span simple beam bridge is discussed in this paper.
介绍了简支结构变连续体系在墩顶处施加纵向体外预应力的施工方法。
The paper introduces longitudinal construction method externally prestressed at pier's top when simply-supported structure turns to continuous hierarchy.
在此基础上，以简支矩形截面钢梁损伤识别为例，进行了实例应用研究。
On this foundation, one simple supported rectangle steel beam model is presented as calculated example for the above-mentioned method application.
通过数值算例验证了体外预应力对简支梁桥振动频率和振动模态的影响。
And numerical example is adopted to explain the influence of external prestress to the vibration frequency and modality for simple beam.
同时对预应力混凝土简支梁进行了破坏性加载试验和振动信号采集工作。
At the same time, destructiveness test by loading on simple supporting prestressing concrete beam and gathering work of the vibration signal were carried on.
对于线性荷载作用下外简支环板，引入统一强度理论，进行了极限荷载分析。
For simply supported annular plate under linear load, the limit load analysis was investigated by applying unified strength theory.
采用车-桥系统模型，对影响铁路简支梁桥竖向共振的各种因素进行了分析。
In this paper, the factors to influence the vertical resonance of a simply supported girder Bridges are investigated systematically.
最后以一简支钢筋混凝土桥梁为例，证明了该方法的有效性、实用性和稳定性。
The validity, the practicability and the stability of the method were demonstrated by a simply supported reinforced concrete bridge as an example.
笔者的研究成果为硬土质基础的铁路简支梁桥的抗震安全设计，提供了重要参考。
The study provides the meaningful reference for anti-seismic safety design for railway simply supported bridge on hard-soil foundation.
从支承形式上来看，简支转连续梁桥主要包括单支座和双支座两种主要的结构形式。
From the support forms, the simply supported-continuous bridges have mostly two main structural forms: single prop and dual prop.
通过模型梁试验，建立起简支梁在附加荷载作用下振动特性与破损模态之间的关系。
Through the test of model beam, we build the relationship between characteristics of vibration with attached load and its damaged mode.
用有限元法和能量变分法对预应力活性粉末混凝土简支箱梁的剪力滞效应进行研究。
The shear-lag effect on the prestressed RPC simply-supported box girder is studied by FEA method and energy variation method.
用一个具有随机质量密度和截面直径的简支梁的理论结果，验证文中方法的正确性。
It is proved that the method is correct by comparing with the theoretical results of a simply-supported beam with random mass density and section diameter.
发现板在两端简支、中点联结松动时，结构首先出现屈曲失稳，而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plate's buckling instability will happen first while the flutter instability will disappear.
以某铁路曲线多跨简支梁桥为例，讨论了考虑桩土作用的铁路曲线梁桥车桥耦合振动。
The coupled vibration analysis of rail-way simple-supported curved-girder Bridges and vehicles was discussed in this paper.
以某铁路曲线多跨简支梁桥为例，讨论了考虑桩土作用的铁路曲线梁桥车桥耦合振动。
The coupled vibration analysis of rail-way simple-supported curved-girder Bridges and vehicles was discussed in this paper.
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