preflex中文是什么意思

• 预弯

• preflex beam    预弯梁
• preflex beam bridge    预弯梁桥
• preflashover period    轰燃前的阶段
• preflash    预闪蒸; 预照光
• preflight    adj. 【航空】在起飞之前的。 preflight instructions 起飞前的指示。
• preflame reaction    预燃反应
• preflight acceptance equipment    飞行前验收设备
• preflame oxidation    预燃氧化
• preflight acquisition    发射前截获目标
• preflame    预燃

• Elastic analysis method of preflex composite beam proposed by japanese was broken through
  该方法突破了日本学者提出的以弹性分析法为基础的预弯梁计算理论。
• Presently , preflex composite beam has been applied in civil buildings , highway bridges and other fields of construction
  目前，预弯组合梁已开始应用于我国土木建筑、公路桥梁等建筑领域中。
• More than ten preflex composite beam bridges were designed and analyzed with this method , and excellent results were obtained
  利用该方法已完成了十余座预弯组合梁桥的设计分析，取得了良好的计算结果。
• Preflex composite structure is a new type of structure developed following the step of steel structure and reinforced concrete structure
  预弯组合结构是建筑结构中继钢结构与钢筋混凝土结构之后兴起的一种新型结构。
• Nonlinear analysis method on the mechanical behavior of preflex composite beams was established with the nonlinear stress - strain curves of materials
  摘要采用材料非线性本构关系研究预弯组合梁的受力行为，建立预弯组合梁从预弯钢梁加荷到结构破坏的非线性全过程分析方法。
• Compared with steel structure , preflex composite structure has the advantages of not only saving steel but also being able to strengthen rigidity of structure members and the whole structure . in addition it has better characteristics in fireproof and antirust . compared with reinforced concrete structure , it has a lighter structure weight , higher strength , higher bearing capacity and better ductility as well
  与钢结构相比，它不但节省钢材，而且能够增强构件及建筑物的刚度，防火和防锈性能好；与钢筋混凝土结构相比，它不但重量较轻，而且具有较高的强度、承载力和良好的延性，能充分发挥钢和混凝土两种不同材料的受拉受压特性。
• In order to accelerate the development of preflex composite beam in railway bridges and to design and construct preflex composite beam bridges of railway in our country reasonably , this thesis is from the scientific project of railway department " experiment and application research of railway preflex composite beam " and summarizes the design information and practical projects on preflex composite beam . on the basis of above works , this thesis improves computation method in analysis of railway preflex composite beam on sectional stress , deflection of mid - span , crack width and shearing resistance and programs a software " preflex composite beam bridge structure analysis system - pfsas " , which is adapt to railway bridges in our country . moreover it makes a primary research in construction techniques and structure measures
  为了迅速促进预弯组合梁在我国铁路桥梁中的发展，合理地进行我国铁路预弯组合梁桥的设计和施工，本文结合铁道部科技研究开发项目“铁路预弯组合梁的实验与应用研究” ，在总结以往对预弯组合梁力学性能研究成果及实际工程的基础上，完善了铁路预弯组合梁的截面应力、跨中挠度、裂缝宽度和抗剪分析的计算方法；编制了适用于我国铁路桥梁的“预弯组合梁桥结构分析系统? ? pfsas ”软件；并对预弯组合梁的施工工艺及构造措施进行了初步探索。