不列颠标准。

3 Terms, definitions and symbols

3.1.1.4characteristic permanent action

binationoftensileandshearactionsapplied

BRITISH STANDARD

污水处理厂标准规范范本BS8539:2012

suitablytrainedandqualifiedbyknowledgeandpracticalexperience,and provided with the necessary instructions, to enable the required task(s) to be carried out correctly

suitablytrainedandqualifiedbyknowledgeandpracticalexperience,and provided with the necessary instructions, to enable the required task(s) to be carried outcorrectly

shStandardsInstitution2

BS8539:2012

BRITISH STANDARD

3.1.12contracto

3.1.14cracked concrete

3.1.16design life

period for which an anchorage is intended to remain in use NOTEThis is normally 5o years for building structures.

3.1.17 designer

person with overall responsibility for the design of a structure, which includes the anchorage, throughout the whole design and construction stage NOTEThe designer might or might not be the specifier.

person with overall responsibility for the design of a structure, which includes the anchorage, throughout the whole design and construction stage NOTEThe designer might or might not be the specifier.

3.1.18embedment depths

BRITISH STANDARD

BS8539:2012

3.1.26multiple use

shStandardsInstitution2

BS8539:2012

BRITISH STANDARD

3.1.36 redundancy situation where there are more load paths than strictly necessary to carry the loadthroughthestructure,orpartthereof

ability of a structure/structural system to accept a certain amount of damage without that structure failing to any degree NOTERobustness implies insensitivitytolocalfailure.

BRITISH STANDARD

BS8539:2012

application in which the failure of anchors can: a)result in collapse or partial collapse of the structure; and/or b) cause risk to human life; and/or C) Tead to significant economic loss NOTE This definition is adapted from ETAG 001, Part 1 [8]

3.1.39selection

shStandardsInstitution2

BS8539:2012

BRITISH STANDARD

BRITISHSTANDARD

BS8539:2012

BS8539:2012

BRITISH STANDARD

4Rolesandresponsibilitie

COMMENTARYONCLAUSE4

4.1Manufacturer/supplier

Anchor manufacturers and suppliers should provide suchinformation as is necessary for the specifier and the installer to ensure the safe selection, specification, installation, use, maintenance, cleaning, dismantling or disposal of the anchor without risk to safety or health

NOTESee Clause6fordetails of the information to be supplied. While anchor manufacturers and suppliers may provide advice, for which they should take responsibility,that does not make them the specifier in the contex of this British Standard, as they do not have responsibility for the selection of the anchor within the project.

leBritishStandards Instit

BRITISH STANDARD

4.2Designer

BS8539:2012

Suppliers of anchors should take care to supply anchors as ordered by customers Specifications of anchors that have been ordered should not be changed unless the change management procedure in Clause 1o has been followed and the proposed change has been approved by the specifier.

4.3Specifier

The specifier shoulddetermine the most appropriateanchorfortheparticular application, by following the selection process given in Clause 5 and using the appropriate design method forthat anchor.

4.4Contractor

It is essential that the contractor is satisfied at the time of installation of anchors that the strength of the base material is at least that assumed by the specifier in the design and selection of anchors. If not, the contractor should liaise with the specifier and await instructions.

It is essential that the contractor is satisfied at the time of installation of anchors that the strength of the base material is at least that assumed by the specifier in the design and selection of anchors. If not, the contractor should liaise with the specifierandawaitinstructions.

ishStandardsInstitution

BS8539:2012

BRITISH STANDARD

4.5Installer

ftheinstaller is requiredto install anchors specificallyforthepurposeoftests, chey should ensure that the anchors are installed in the locations prescribed by he specifier or contractor

4.6Supervisor

BRITISH STANDARD

BS8539:2012

5Selectionandspecificationofanchors

COMMENTARYONCLAUSE5

COMMENTARY ONCLAUSE5

Figure2Flowchartforselectionprocess

BS8539:2012

BRITISH STANDARD

5.2Preliminarydesignconsiderations

BRITISH STANDARD

5.3 Factors determining anchor type

BS8539:2012

fundamental to the selection of properly qualified anchors (see AnnexD, Figure D.1 and Figure D.2). Applications inwhichthefailureof any anchor supportingthefixturewill ead to its collapse are referred to as being"statically determinate (see 3.1.43),while those which have been designed with sufficient edundancy (see 3.1.36)that the failure of one anchor willnot lead to orogressive collapse(see3.1.32)are referredtoas"statically indeterminate see3.1.44).Themajority of applications are statically determinate.If determinacy is not known then anchors qualified for statically determinate useshouldbeselected. VOTE1Themajorityof anchorswithanETAarequalifiedforstatically determinateuse.ThestatusofdifferentETAGsinrelationtostatical determinacy is indicated in the CFA Guidance Note ETAs and design methods fo anchors used in construction [1]. NOTE2Iftheapplication conformstothedefinitionof"multipleuse (see 3.126] as defined in ETAG 001 Part 6 [6lor in FTAG 20 [Z1 then it can he

VOTE1 ThemajorityofanchorswithanETAarequalifiedforstatically determinate use.The status of different ETAGs in relation to statical determinacy is indicated in the CFA Guidance Note ETAs and design methods fol anchorsusedinconstruction[1]

VOTE2 Iftheapplicationconformsto thedefinitionof"multipleuse (see 3.1.26) as defined in ETAG 001, Part 6 [6] or in ETAG 20 [7], then it can be regarded as statically indeterminate, and anchors conforming to those ETAGs may be specified without the need for special consideration of the stiffness of the supported structure. Applications vulnerabletoprogressive collapse (including suspended ceilings, and suspended services such as pipework, ductwork or cable tray), and which do not satisfy the preconditions of multiple use, should be designed using anchors qualified for statically determinate use. NOTE3Guidance on robustness is given in theISE publication Practical guide to structural robustness and disproportionate collapse in buildings [10l

NoTE2Iftheapplicationconformstothedefinitionof"multipleuse (see 3.1.26) as defined in ETAG 001, Part 6 [6] or in ETAG 20 [7], then it can be regarded as statically indeterminate, and anchors conforming to those ETAGs may be specified without the need for special consideration of the stiffness of the supported structure. Applications vulnerabletoprogressivecollapse(including suspended ceilings, and suspended services such as pipework, ductwork or cable tray) and which do not satisfy the preconditions of multiple use, should be designed using anchors qualified for statically determinate use. NOTE3Guidance on robustness is given in theISE publication Practical guide to structural robustness and disproportionate collapse in buildings [10]

The specifier should determine the type of anchor to be specified, taking account of thefactorsdescribed in5.3.2 to 5.3.6,alongwiththe features and capabilities of the different anchor types as outlined in Annex C.

5.3.2 Anchor reliability

Specifiersshouldsatisfythemselves selectedanchorwillfunctio reliably in the range of conditions which could be encountered on site.

ishStandardsInstitution

BS8539:2012

5.3.3Base material

BRITISH STANDARD

Not all anchors work in all base materials, so the specifier should ensure that the proposed anchors are suitablefor thebase material concerned. NOTEGuidanceon concrete is given in 5.3.3.2,and on masonry in5.3.3.3

5.3.3.2Concrete

Productcertification/inspection/testing.UsersofthisBritishStandardareadvisedto considerthedesirabilityof selecting anchorswitha EuropeanTechnical Approval (ETA) 2).Annex D, Figure D.1 shows the selection process foranchors in concrete with andwithoutan ETA

5.3.3.2.1 Structural form

The specifier should evaluate thetype and strength of concrete structure,as there might be factors which could influence the choice of anchor or its positioning.

COMMENTARY ON 5.3.3.2.2

MMENTARY ON 5.3.3.2.

leBritishStandards Instit

At the time of publication of this British Standard, it is expected that European Technical Approval Guidelines will be replaced by European Assessment Documents and European Technical Approvals will be replaced by European Technical Assessments upon implementation of EURegulation 305/2011(Construction Products Regulation)[2]in July2013

BRITISH STANDARD

5.3.3.2.3Concrete strength

BS8539:2012

COMMENTARYON5.3.3.2.3

IMENTARY ON 533.23

Structural dimensior

Specifiersshouldtakeinto accountthefollowingdimensionallimitationsofthe structure, as these limitations affect anchor performance.

a)Edgeandspacingparameters.

All anchors require an amount of the base materialaround them,to support the forces induced during their installation and/or those transferrec fromthe fixturein service.Datashould be acguired from themanufacturer identifying the edge distances and centre spacings that will provide full performance (characteristic edge distance, Cer or characteristic spacing, s.r), and absoluteminimum dimensions(minimumedge distance,Cminor minimum spacing, Smin), for which performance should be reduced accordin to the prescribed design model (see Figure 3). NOTE 1Anchors conforming to ETAG 001, Parts 1 to 5 ([8] and [11] to [14] will, depending on theiroption, include this data.Some options allow design using minimumdimensions, while others allow anchors tobe specified onlyat the critical distances with no closer dimensions allowed. There is, however, a relationship between the anchor spacing and the edge simultaneously with the minimum spacing, Smin. Minus tolerances should not be specified.

All anchors require an amount of thebase materialaround them,to support the forces induced during their installation and/or those transferred fromthe fixturein service.Datashould be acguired from themanufacturer identifying the edge distances and centre spacings that will provide full performance (characteristic edge distance, Cer or characteristic spacing, s.r), and absoluteminimum dimensions(minimumedge distance,Cminor minimum spacing, Smin), for which performance should be reduced accordin to the prescribed design model (see Figure 3). NOTE 1Anchors conforming to ETAG 001, Parts 1 to 5 ([8] and [11] to [14] will, depending on their option, include this data.Some options allowdesign using minimum dimensions, while others allow anchors tobe specified onlyat the critical distances with no closer dimensions allowed. There is, however, a relationship between the anchor spacing and the edge Minus tolerances should not be specified.

ishStandardsInstitution

BS8539:2012

建材标准b)Embedment depth

BRITISH STANDARD

Theembedmentdepthshouldbetakenintoaccountinthecalculation tensile resistance of the anchor

neembedmentdepthshouldbetakenintoaccountinthecalculationot ensileresistanceoftheanchor

BRITISH STANDARD

BS8539:2012

光伏发电标准规范范本C)Structural thickne