Abstract: the environmental effects are analyzed and the secondary lining concrete durability is studied in the design for Qingdao Metro Line 3.

摘要：分析了青岛地铁3号线所在地域的环境作用，并对地铁二次衬砌混凝土的耐久性进行研究。

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Research purposes: According to the characteristics of passenger dedicated railway line on conformation, load, durability, inspection function and appearance, the reasonable abutment is designed.

研究目的：根据时速客运专线铁路在构造、受力、耐久性、检查功能及美观等方面的特点，设计出合理、适用的桥台。

youdao

Research conclusions: the rectangular hollow abutment and the t figure hollow abutment meet the requirement of passenger dedicated railway line on conformation, load, durability and function.

研究结论：矩形空心桥台、T形空心桥台在构造、受力、耐久性、功能上均能满足客运专线铁路的要求。

youdao

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But just like televisions, computer-aided design and manufacturing has changed the abilities and durability of the cars, bringing them into line with other, much more expensive automobiles.

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The line includes a rugged speaker built for durability in sporting and outdoor settings, as well as two striking aircraft-grade aluminum models.

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