The infuence on resonance frequencies of longitudinal-torsional ultrasonic motor exerted by prestress is studied.

The changes of deflection, prestress and reactions with temperature increasing are presented.

主要测试了构件的挠度变化 、 预应力的变化及支座反力的变化.

It is important to calculate the initial prestress for cable-truss initial state form-finding.

初始预应力分布计算是索桁架初始态找形的重要内容.

Prestress concrete beam uses C 50 concrete usually.

预应力混凝土梁中通常采用C50混凝土.

After tensioned, anchor seal material at the end of prestress beam is C 50 concrete.

钢绞线采用单束两端同时张拉,张拉后采用C50混凝土封锚.

Shear lag is reduced for prestress in serviceability limIt'state.

在正常使用状态下,预应力平抑了箱梁剪力滞效应.

External prestressing is a kind of no felt prestress.

体外预应力是无粘结预应力的一种.

The prestress loss cable is an important factor which can affect the safety of anchoring project.

锚索预应力损失问题是关系到锚固工程安全与否的重要因素.

The double-layer cable structure is the prestress equilibrium systems composed by tensional cables and struts.

双层 索结构是指由张力索和压杆组成的、具有预应力自平衡的新颖结构体系.

The calculating of initial prestress distribution is basic and important for analyzing of double-layer cable structure.

初始预应力分布的计算是 双层 索结构受力分析的基础.

The paper introduced some control methods and measures of part prestress concrete continuous box beam.

简要介绍装配式部分预应力砼连续箱梁桥施工中的几个关键部位控制方法与措施.

The variational rules of prestress , cracks and reaction of continuous slabs are studied.

并对裂缝的出现、预应力及内力的变化规律作了相应的阐释.

The changes of prestress and cracks with temperature increasing are analysed.

对裂缝的出现和预应力的变化规律作了相应的阐释.

Prestress technology is an effective way to use the high strength of FRP composite.

预应力技术是充分发挥FRP复合材料高强性能的一条有效途径.

Prestressing steel wires ( steel strands ) are widely used in prestressed concrete structures.

预应力钢丝 ( 钢绞线 ) 广泛地应用于预应力混凝土结构中.

Technical consultant for Manufacture of big span prestressed concrete reiteration plate.

4.大跨度预应力钢筋砼叠合板生产技术的咨询.

The secondary moment of prestressed concrete frame is different from that of continuous beam.

预应力框架次弯矩与连续梁相比有着自己的特点.

This effective analysis tool can be used for the design and research of prestressed concrete structures.

为预应力混凝土结构的设计和研究提供了一种切实可行的分析工具.

In this respect, prestressed concrete is superior to reinforced concrete, but it has other limitation.

这一方面, 预应力混凝土比钢精混凝土优越, 但它也有其他限制因素.

Moreover, we also produce Epoxy-coated Steel Wire and Steel Stick for Prestressed Concrete.

此外, 本公司还生产环氧涂层预应力混凝土用钢丝、钢棒.

Technical consultant for the manufacture of big span prestressed concrete reiteration plate.

5.为大跨度预应力钢筋混凝土叠合板生产技术咨询.