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1)  pre-stressed FRP sheet
预应力FRP布
1.
Taking a large-sized concrete pier in a railway bridge for example,the advantages of concrete piers strengthened with pre-stressed FRP sheets are compared with no pre-tensioned FRP sheets.
通过对FRP(Fiber Reinforced Polymer)布加固混凝土桥墩时预应力施加方法的研究和分析,给出了预应力FRP布加固混凝土桥墩的施工方法;以某铁路桥梁中的大尺寸混凝土桥墩为例,比较分析了预应力FRP布加固混凝土桥墩的优点和优势,参照中美两国规范给出了预应力FRP布加固混凝土墩柱的承载力和延性分析方法。
2)  outer pasting prestressed FRP fabric
外贴预应力FRP布
3)  prestressed FRP
预应力FRP
1.
If there is usually no anchor measure in the end,the prestressed level provided by the usage of prestressed FRP reinforcement is limited and does not reach the desired results.
通过对预应力FRP放张后端部应力状态的分析后发现,适当加大粘结层的厚度和提高粘结层的变形性能可大幅度提高端部粘结锚固的能力,满足预应力加固的需要。
2.
This paper presents both numerical value and experimental studies of the behavior of conceret beams strengthened with prestressed FRP, discussing the load deformation p, flexural failure and various parameters influencing their behavior.
通过数值计算和试验,对外贴预应力FRP加固受弯构件的受力性能进行了研究,对加固后钢筋混凝土梁正截面的破坏特征、受力特点和影响因素以及构件变形进行分析。
3.
(2) Introduce the construction technology of prestressed FRP tendons-embedded reinforced concrete beam.
本文研究的主要内容如下:(1)对在汶川地震中破坏的框架结构和砖混结构的房屋震害原因进行深入分析;(2)介绍预应力FRP筋--嵌入式加固混凝土梁的施工工艺;(3)对预应力FRP筋--嵌入式加固混凝土梁的受弯性能进行研究。
4)  prestressed FRP bar
预应力FRP筋
1.
A research summarize about prestressed FRP bar concrete beam sliffness;
预应力FRP筋混凝土梁刚度研究综述
2.
The relative slip will unavoidably come to pass on the bar-concrete interface in a prestressed FRP bar-concrete composite beam under external loading,and the stress in a prestressed FRP bar increases correspondingly with the external loading.
外荷载作用下,预应力FRP筋钢与混凝土组合梁的交接面必产生相对滑移,预应力FRP筋内力会随外荷载增加而增加,这种交接面滑移和FRP筋内力增量会导致混凝土翼缘板、钢梁、连接件受力性能发生变化。
5)  prestressed FRP sheets
预应力FRP片材
1.
Strengthening the components of the structure with prestressed FRP sheets is a hot spots of the FRP develonment,which is used in the civil engineering.
预应力FRP片材可以充分发挥材料的高强度,提高构件的加固效果。
6)  bonded FRP tendon
有粘结预应力FRP筋
1.
So the deflections of concrete beams prestressed with bonded FRP tendons are expected to be larger than those of the steel bars cases.
与预应力钢筋相比,FRP筋的弹性模量较低、粘结性能稍差,因此有粘结预应力FRP筋混凝土梁的挠度比相应的预应力钢筋混凝土梁的大。
2.
The failure modes of concrete beams prestressed with bonded FRP tendons can be classified into three types: the balanced failure,compression-controlled failure and tension-controlled failure.
国内外已有试验研究表明,有粘结预应力FRP筋混凝土梁的破坏模式包括界限破坏、受压破坏与受拉破坏三种。
补充资料:预应力
分子式:
CAS号:

性质:试验中试样所受到的预加的恒定静态应力,单位为Pa。在生热性疲劳试验中,如固特里奇屈挠试验中,一般都施加一恒定预应力,使试样产生一静态变形,再叠加一周期压缩变形进行试验,通常预应力的大小会影响试样的疲劳寿命,预应力越大,则试样寿命会越明显缩短。也有的先施加一静态压缩变形,再叠加周期性剪切变形进行试验。

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