EUROCODE常见问题解答
1. What are the Eurocode equivalents of BS 8110-1, BS 8110-2, BS 8007, BS 5400, BS 8102, CIRIA 139?
BS EN 1992-1-1 and BS EN 1992-1-2 replaced BS 8110-1 and BS 8110-2.
BS EN 1992-2取代了BS 5400-4，但请注意，BS EN 1992-2必须与BS EN 1992-1-1结合使用。
BS EN 1992-3取代了BS 8007，但请注意，BS EN 1992-3必须与BS EN 1992-1-1结合使用。
BS 8102在2009年进行了修订。
CIRIA 139 is a guidance document on the design of basements. It has largely been superseded by BS EN 1992-3, which should be used together with CIRIA C660 (Early thermal cracking). See混凝土地下室。
2.什么时候我必须从使用BS 8110/BS 5400更改为使用Eurocode 2？
尽管Eurocode 2取代了所有以前的国家代码，涉及结构混凝土的设计，但仍有一段时间的过渡。以前的英国标准（例如BS 8110，BS 8007）继续使用，但在2010年被“撤回”，即不再得到相关的英国标准学院委员会的支持。BS 8110不一定是不安全的，但越来越多，因此不是当前的最佳实践。
For bridges, the major clients are public bodies and under European law they should require designers to use Eurocodes from March 2010 for new contracts. For buildings there is no obligation to use Eurocode 2 from this date as the building regulations only require that the designer shows that design is safe; there is no obligation to use a particular Code of Practice. Clients (particularly those which are public bodies) or a designer’s insurers may require the latest Codes of Practice to be used, this will be a driver to change over to Eurocodes.
3. What is the minimum number of bars in a circular column?
Eurocode 2的最低数量为4（BS 8110建议6）。如果仅使用4条使用任何列设计图表，因为它们可能至少假设6个bar。
4. In Eurocode 2, is the lap length based on the size of the smaller bar as is the case to BS 8110.
EUROCODE 2is not specific, but logically the strength of the lap will be limited by the smaller bar and therefore this should be used to determine the minimum lap length.
5.气缸强度与立方体强度之间的关系是什么？轻质混凝土是否相同？
There is no single expression linking cylinder strengths to cube strengths in Eurocode 2, but they are given in Table 3.1 of BS EN 1992-1-1 for normal weight concrete and roughly speaking the cylinder strength is 80% of the cube strength. For lightweight concrete, the information is given in Table 11.3.1 and roughly speaking the cylinder strength is 90% of the cube strength.
6.我应该在评估Eurocode 2的剪切强度时要采取什么角度，因为它未设置为45度？
通常，会发现21.8°的支柱角提供足够的强度，因此建议首先假设这一点。
For heavily loaded and transfer beams the strut angle may need to be increase and the angle required can be calculated. Further guidance is given under剪and inHow to design concrete structures using Eurocode 2：第4章，光束。
7.是否有针对Eurocode 2的设计示例？
Yes. Worked Examples by The Concrete Centre are available in thePublications Library，其中一些包含在本网站的这一部分中。
A set of examples has also been published by British Precast for precast concrete elements, including prestressed elements.
Other worked examples include:
来自JRC-http://eurocodes.jrc.ec.europa.eu/doc/1110_WS_EC2/report/1110_WS_EC2.pdf
来自Ermco：http://www.ermco.eu/documents/ermco-documents/worked-examples-ec2-def080723.pdf
8.在哪里可以找到Eurocode 2中使用的新符号和缩写的列表？
每个Eurocode都有第1节中的符号列表。符号通常在引入它们的时间上也完全描述。可以在Concise Eurocode 2和简明的Eurocode 2用于桥梁。（请注意，它们分别适合建筑物和桥梁的列表略有不同。）
9. What load case should I take when designing for cracking in prestressed concrete?
The frequent load combination should be used.
10. Can I design for the shear force at d away from the support in Eurocode 2?
是的，提供负载主要是UDL。参见BS EN 1992-1-1的第6.2.1（8）条。
11. How do I work out the appropriate concrete cover?
Concrete cover is required for three reasons:
1. For bond - use bar diameter for reinforced concrete. See clause 4.4.1.2(3) for prestressed concrete.
2.耐用性 - 使用BS 8500。
3. For fire resistance – use BS EN 1992-1-2, section 5. Fire resistance works on ‘axis distance’ to the centre of the main bars - cover has to be calculated from there.
An allowance for deviation (usually 10 mm) is added to the maximum cover required from 1 to 3 above to obtain the nominal cover, cnom.
Further guidance is given inHow to design concrete structures using Eurocode 2: Chapter 2, Getting Started.
12.您如何得出K和K'的公式？
We have worked from first principles seeFlexure
13.如何计算出Eurocode 2的列的细长限制？
A column is slender ifl>l林
Slenderness,l= lo/i = 3.46l0/h，用于矩形列
Limiting slendernessllim = 20ABC/N0.5
在哪里
lo = effective length (=1.0l for pinned ends, generally = approx. 0.75l for rotationally restrained ends)
i = radius of gyration
h =最小尺寸of rectangular column
a =蠕变的津贴，默认值0.7
B = an allowance for the ‘mechanical ratio’ default value 1.1
c =矩分布的津贴，默认值0.7，但这很繁重，值为大约。2.5可以通过基本计算获得。
n = axial load / area of the concrete
可以在指导的过程中找到一个程序How to design concrete structures using Eurocode 2，第5章，列。它是在BS EN 1992-1-1第5.8.3节中处理的。
14.水平偏转到Eurocode 2是否存在最大限制？
Eurocode 2中没有提供指导。
15.我可以增强接近Eurocode 2中支撑的部分的剪切能力吗？
Clause 6.2.2(6) of BS EN 1992-1-1 explains how the shear from a concentrated load close to the support can be reduced to take into account direct strutting action to the support. The attendant rules for shear links can be more conservative than ignoring this ‘enhancement’. For bridges, the UK National Annex to BS EN 1992-2 amends this clause so that is the shear resistance is enhanced.