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GB/T 40048-2021Test methods for bolted connections in structural wood and wood-based materials (English PDF)

木质结构材螺栓连接力学性能测试方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 30, 2021

Implementation date

November 1, 2021

Scope

GB/T 40048-2021 is the English-translated version of 木质结构材螺栓连接力学性能测试方法.

GB/T 40048-2021 gives test methods for the mechanical properties of bolted connections in structural wood and wood-based materials, and for the compressive strength of bolt holes and pin grooves.

It applies to joints in which at least one wooden structural member is connected by a single bolt to at least one member of any other material, usually structural wood, steel plate or concrete, with strength and stiffness tested under lateral load.

Its definitions cover bolted joints, single shear joints, double or multiple shear joints, embedment strength and lateral load resistance. It relies on the methods for wood moisture content and density, the wood structure design and test standards, the glulam structure specification and LY/T 3041 on the cyclic loading of metal fastener connections. It was issued on 30 April 2021 and has applied since 1 November 2021.

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Document preview — GB/T 40048-2021

National Standard of the People's Republic of China

ICS: 91.080.20
Classification: P 23

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the test methods for the mechanical properties of the bolted connections of wooden structural materials and the compressive strength of bolt holes and pin grooves.

This standard applies to connecting at least one wooden structural member and at least one other arbitrary material member through a single bolt fastener.

The joint test pieces are connected with one-piece bolts, and the connection strength and stiffness are tested under the action of lateral load.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 1931 Method for determination of wood moisture content

GB/T 1933 Method for determination of wood density

GB 50005 Wood Structure Design Standard

GB/T 50329 Standard Test Method for Wood Structure

GB/T 50708 Technical specification for glulam structure

LY/T 3041 Test Method for Cyclic Load Performance of Metal Fastener Connection of Wood Structure

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Structural wood and wood-based materials

It is also called structural wood material. It is wood or wood material that is used as a structural member to bear the load and can meet the requirements of engineering design.

3.2 Bolted joints

At least one wooden structural member and at least one other arbitrary material (usually wooden structural material or (Steel plate or concrete) components are connected as a whole.

3.3 Single shear joints

Single shear connection is the connection of two components connected by a single fastener, which only forms a single shear surface connection.

3.4 Double shear or multiple shear connection

The double shear test is that two components are connected by a single fastener to form a connection between two or more shear surfaces.

3.5 Embedment strength

The projection unit area of the bolt hole of the wooden structure bears the compression load of the bolt fastener.

3.6 Lateral load resistance

When a bolted fastener connects at least two components, the connecting part resists short-term lateral load (compression or tension) perpendicular to the axial direction of the fastener.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1931 · GB/T 50329

Similar standards

GB/T 14370-2015

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