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The revision of Eurocode 7 'Geotechnical design' begins - preparatory works, mandate and first discussions

机译:开始对欧洲规范7“岩土工程设计”进行修订-准备工作,任务和首次讨论

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The article describes European and German preparatory work for the new Eurocode 7 (EN 1997). A leading role had the German initiative PraxisRegelnBau (PRB) and its Project Group Geotechnics (PG6), which simultaneously acted as a working group of the German mirror committees of DIN responsible for the two parts of EN 1997. Streamlining the text of both parts to enhance their ease of use and the preparation of proposals for geotechnical calculation models for informative annexes in EN 1997 had highest priority. The new EN 1997 "Geotechnical design" will consist of three parts: Part 1 "General rules" (EN 1997-1), Part 2 "Ground investigation" (EN 1997-2) and Part 3 "Geotechnical constructions" (EN 1997-3). In meetings of SC7 in 2015 and 2016 concepts for changes and amendments of the future EN 1997 were discussed and in April 2017 a first draft of part 1 "General rules" was presented. An important change is planned for Part 2 "Ground investigation", the contents of which will be focused on geotechnical parameter for design instead of field and laboratory tests. A heated discussion came up by the proposal in the draft on EN 1997-1 to adopt the classification system of the informative Annex B of EN 1990 and further geotechnical classifications in the core text of EN 1997-1. These classifications should partly be coupled with a reduction and/or an increase in the partial factors of safety. Many delegates did not approve of this and a compromise was found by moving the classification system into an informative annex.
机译:本文介绍了欧洲和德国为新的欧洲规范7(EN 1997)做的准备工作。德国倡议PraxisRegelnBau(PRB)及其项目组岩土工程(PG6)发挥了领导作用,同时又是DIN德国镜像委员会的工作组,负责EN 1997的两个部分。增强它们的易用性,并为EN 1997提供内容丰富的附件岩土计算模型的建议具有最高优先级。新的EN 1997“岩土设计”将由三个部分组成:第1部分“一般规则”(EN 1997-1),第2部分“地面勘测”(EN 1997-2)和第3部分“岩土结构”(EN 1997- 3)。在2015年和2016年的SC7会议上,讨论了对EN 1997未来的更改和修正的概念,并在2017年4月提出了第1部分“一般规则”的初稿。计划对第2部分“地面调查”进行重要更改,其内容将集中于设计的岩土参数,而不是现场和实验室测试。 EN 1997-1草案中的提案引起了激烈的讨论,该提议采用了EN 1990的信息性附录B的分类系统,以及EN 1997-1的核心文本中进一步的岩土分类。这些分类应部分与减少和/或增加部分安全因素结合在一起。许多代表不同意这一点,并且通过将分类系统移至内容丰富的附件中找到了折衷方案。

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