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1)  high pretensioned stress
高预应力
1.
Based on high pretensioned stress and intensive bolting theory,it was put forward that the high pretensioned stress and intensive cable bolting with shorter length,set in full section and vertical to surface of roadways is an effective supporting type to the roadways with high stress or large deformation.
分析了目前煤矿锚索支护存在的问题,在高预应力强力支护理论的基础上,提出高预应力、长度较短的强力锚索,并全断面垂直岩面布置,是高地压、大变形巷道的有效支护方式。
2)  high-strength prestress
高强预应力
1.
In accordance with the construction features of high-strength prestressed concrete tube pile,the article discusses its quality and safety insurance problems and the controlling measures.
文章结合静压高强预应力混凝土管桩的施工特点,针对施工质量和施工安全技术问题进行了探讨,并介绍了施工实践过程中如何采取一些具体措施来控制施工质量和施工安全。
2.
According to practical projects, the author introduces technical features and construction methods of static pressure high-strength prestress pipe piles, and provides requirements for quality control of this technology.
通过工程实例 ,介绍静压高强预应力管桩施工技术特点及方法并对质量控制提出要求。
3)  high PPR
高预应力度
1.
Studies on seismic performance of prestressed concrete beams with high PPR;
高预应力度混凝土梁抗震性能探讨
4)  high effective prestressed
高效预应力
1.
Experimental research for loaded behavior of sludge digestion tank of high effective prestressed concrete;
高效预应力混凝土污泥消化池受力性能试验与计算分析
5)  high efficiency prestress
高效预应力
1.
The structure system of high efficiency prestressed concrete which is best suitable for larger space building has been proposed.
通过工程实例的经济分析,评述高效预应力砼结构的推广价值,并提出最适合于大开间住宅的高效预应力结构体系。
6)  pretensioned high-strength concrete pipe pile
预应力高强管桩
补充资料:超高强钛合金
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性质:室温拉伸强度超过1400MPa的钛合金。目前这类合金还处于发展阶段,如美国波音公司的研究指标为:室温拉伸强度≥1500MPa;剪切强度≥860MPa;伸长率≥8%;加载应力等于45%室温拉伸强度时的疲劳循环次数不少于10万次;断裂韧性和屈服强度的比值与4340M超高强度钢相当。比较有发展前途的是Ti8V5FelAl亚稳定β钛合金,其典型的力学性能已达到室温拉伸强度为1480MPa;伸长率为8%。

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