TB 10505-2019 PDF English
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TB 10505-2019: Code for Design of Railway Sound Barriers---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/TB10505-2019
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
J 2743-2019
Code for design of railway sound barriers
Issued on. JULY 31, 2019
Implemented on. DECEMBER 01, 2019
Issued by. National Railway Administration
Code for design of railway sound barriers
J 2743-2019
Main drafting organizations.
China Railway Fourth Survey and Design Institute Group Co., Ltd.
China Railway Eryuan Engineering Group Co., Ltd.
Approved by. National Railway Administration
Effective date. December 1, 2019
China Railway Press Co., Ltd.
2019·Beijing
Table of Contents
Foreword... 5
1 General... 7
2 Terminology... 7
3 Basic provisions... 8
4 Acoustic design... 9
4.1 General provisions... 9
4.2 Design target value... 10
4.3 Insertion loss of sound barrier... 12
5 Structural design... 16
5.1 Materials... 16
5.2 Loads and load combinations... 21
5.3 Structural calculation... 25
5.4 Construction requirements... 26
6 Auxiliary facilities... 28
7 Interface design... 29
Explanation of wording in this code... 30
References... 31
1 General
1.0.1 In order to unify the design standards of railway sound barrier engineering, make
the railway sound barrier engineering design meet the requirements of safety, reliability,
green, environmental protection, advanced maturity, economical application, etc., this
Code is formulated.
1.0.2 This Code is applicable to the engineering design of new and reconstructed
railway sound barriers.
1.0.3 The acoustic design of the sound barrier should be determined, according to the
recent traffic volume of the railway project, the type of train, the number of marshalling,
the number of pairs, the design speed and other factors.
1.0.4 The sound barrier is strictly prohibited from intruding into the boundary of the
railway building. It shall not affect the safety of other transportation equipment. It shall
meet the inspection and maintenance requirements of itself and other railway facilities.
1.0.5 The design service life of acoustic elements of sound barrier shall not be less than
25 years. The design service life of structural components shall not be less than 50 years.
The structural safety level shall not be lower than level 2.
1.0.6 The new technology, new process, new material, new equipment, which is adopted
in the sound barrier project, shall comply with the relevant provisions of the current
national standards.
1.0.7 In addition to this Code, the engineering design of railway sound barrier shall also
comply with the relevant current national standards.
2 Terminology
2.0.1 Railway sound barrier
Structures, which are used to reduce the impact of train running noise, on the acoustic
environment. According to its location, it is divided into subgrade sound barrier and
bridge sound barrier.
2.0.2 Post and panel sound barrier
A sound barrier, which is formed by inserting sound-absorbing or sound-insulating
sheet, between the uprights.
2.0.6 Sound-sensitive point
Noise-sensitive buildings or areas, such as hospitals, schools, institutions, scientific
research organizations, residences, nature reserves, etc.
2.0.7 Background noise
The noise, which is measured at the reference point or the sound receiving point, when
there is no railway noise source, within the control range of the sound barrier.
2.0.8 Insertion loss of sound barrier
Under the condition that the noise source, topography, landform, ground features,
meteorological conditions remain unchanged, The difference between the sound
pressure level of a specific location of a sound-sensitive target of the acoustic
environment, before and after the installation of the sound barrier.
3 Basic provisions
3.0.1 The sound barrier facilities shall be safe and reliable, easy to construct, conducive
to repair and maintenance.
3.0.2 The setting of sound barriers is strictly prohibited to interfere with railway visual
signals.
3.0.3 The location of the sound barrier shall meet the following requirements.
3.0.4 The sound barriers, which are installed in towns, scenic spots, tourist resorts, shall
not only coordinate with the main project, but also coordinate with the local natural
environment, architectural style, humanistic environment.
3.0.5 The sound barrier shall be naturally connected and smoothly transitioned, at the
cross-section change of the road and bridge connections, the station's access section,
the cable well. It shall take measures to prevent sound leakage.
4 Acoustic design
4.1 General provisions
4.1.1 The sound barrier shall be acoustically designed, according to the characteristics
of railway noise source intensity and the noise control requirements of sensitive targets,
in the acoustic environment.
4.1.3 The sound source equivalent height, which is used for the calculation of sound
barrier insertion loss, can be determined by the following methods.
4.1.4 The length and height of the sound barrier shall be calculated and determined,
according to the design target value of the insertion loss.
4.1.5 The length of the sound barrier shall include the distribution length of the acoustic
environment sensitive targets, along the line, AND the additional length at both ends.
The additional length can be calculated and determined according to the following
formula, which should not be less than 50 m.
4.1.6 When the design target value of the insertion loss of the sound barrier is greater
than 10 dB (A), the structural form of the sound barrier shall be compared, selected,
demonstrated; it shall take appropriate noise control measures.
4.2 Design target value
4.2.1 It shall adopt the A sound level, for the design target value of the sound barrier.
4.2.2 The design target value of the sound barrier shall be calculated and determined,
according to the following formula.
4.2.4 The relationship, between the design target value of the sound barrier and the
insertion loss value of the sound barrier, shall meet the requirements of the following
formula.
4.3 Insertion loss of sound barrier
4.3.1 The insertion loss of the sound barrier shall be calculated and determined,
according to the following formula.
4.3.6 Where there are other barriers or obstacles, other than the proposed sound barrier,
between the sound source and the sound receiving point, the sound attenuation can be
determined, according to Articles 4.3.2 ~ 4.3.4 of this Code.
5 Structural design
5.1 Materials
5.1.1 In addition to the requirements of "Acoustic elements of railway sound barrier"
TB/T 3122, the metallic acoustic elements of sound barriers shall also meet the
following requirements.
5.1.3 In addition to complying with the requirements of "Acoustic elements of railway
sound barrier" TB/T 3122, the transmission sound insulation panel of the sound barrier
shall also meet the following requirements.
5.1.4 The metallic and non-metallic acoustic elements, as well as the related products
of the sound barrier shall be shaped products, that meet the relevant national standards.
5.1.5 The acoustic elements of the sound barrier shall have waterproof performance; it
shall have necessary drainage measures.
5.1.7 The connecting members of the sound barrier shall meet the following
requirements.
5.1.8 The gravity mortar, which is used in the post and panel sound barrier, shall comply
with the requirements of "Spherical bearings for railway bridges" TB/T 3320.
5.1.9 The masonry materials and mortar grades, which are used for the masonry sound
barrier, shall comply with the provisions of "Code for design of masonry structures"
GB 50003.
5.2 Loads and load combinations
5.2.1 The sound barrier's load shall include self-weight, natural wind load, train wind
load, and other loads. Other loads shall consider seismic force, snow load, maintenance
load, according to the area where the sound barrier is located AND the facade form.
6 Auxiliary facilities
6.0.1 Drainage facilities shall be provided for the subgrade sound barrier. It shall take
measures to prevent sound leakage, at the drainage outlet. The drainage shall not cause
erosion of the subgrade slope.
6.0.3 The sound barrier, which has safety door, shall be provided with light storage
signs. It shall meet the following requirements.
6.0.4 The metal components of the sound barrier shall form an electrical connection.
The grounding design shall be carried out, in accordance with the relevant provisions
of "Technical code for lightning protection and earthing of railway" TB 10180.
6.0.5 The semi-enclosed and fully-enclosed sound barriers should be equipped with
maintenance and anti-fall devices. Rainwater centralized collection and discharge
facilities should be set up, at the locations where it crosses railways, public (roads) and
other facilities.
7 Interface design
7.0.1 The subgrade design shall reserve the conditions for setting up sound barriers. The
sound barrier's foundation should be designed and constructed, at the same time as the
subgrade.
7.0.4 The design load of the sound barrier of the bridge shall not be greater than the
design load of the sound barrier, which is reserved for the bridge.
7.0.5 When the equipment positions, such as signal reinforcement, need to be reserved
inside the fully-enclosed sound barrier, the installation conditions shall be reserved.
7.0.6 For the segment where the sound barrier needs to be installed in the long term, the
sound barrier foundation and installation conditions shall be reserved.
Explanation of wording in this code
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
J 2743-2019
Code for design of railway sound barriers
Issued on. JULY 31, 2019
Implemented on. DECEMBER 01, 2019
Issued by. National Railway Administration
Code for design of railway sound barriers
J 2743-2019
Main drafting organizations.
China Railway Fourth Survey and Design Institute Group Co., Ltd.
China Railway Eryuan Engineering Group Co., Ltd.
Approved by. National Railway Administration
Effective date. December 1, 2019
China Railway Press Co., Ltd.
2019·Beijing
Table of Contents
Foreword... 5
1 General... 7
2 Terminology... 7
3 Basic provisions... 8
4 Acoustic design... 9
4.1 General provisions... 9
4.2 Design target value... 10
4.3 Insertion loss of sound barrier... 12
5 Structural design... 16
5.1 Materials... 16
5.2 Loads and load combinations... 21
5.3 Structural calculation... 25
5.4 Construction requirements... 26
6 Auxiliary facilities... 28
7 Interface design... 29
Explanation of wording in this code... 30
References... 31
1 General
1.0.1 In order to unify the design standards of railway sound barrier engineering, make
the railway sound barrier engineering design meet the requirements of safety, reliability,
green, environmental protection, advanced maturity, economical application, etc., this
Code is formulated.
1.0.2 This Code is applicable to the engineering design of new and reconstructed
railway sound barriers.
1.0.3 The acoustic design of the sound barrier should be determined, according to the
recent traffic volume of the railway project, the type of train, the number of marshalling,
the number of pairs, the design speed and other factors.
1.0.4 The sound barrier is strictly prohibited from intruding into the boundary of the
railway building. It shall not affect the safety of other transportation equipment. It shall
meet the inspection and maintenance requirements of itself and other railway facilities.
1.0.5 The design service life of acoustic elements of sound barrier shall not be less than
25 years. The design service life of structural components shall not be less than 50 years.
The structural safety level shall not be lower than level 2.
1.0.6 The new technology, new process, new material, new equipment, which is adopted
in the sound barrier project, shall comply with the relevant provisions of the current
national standards.
1.0.7 In addition to this Code, the engineering design of railway sound barrier shall also
comply with the relevant current national standards.
2 Terminology
2.0.1 Railway sound barrier
Structures, which are used to reduce the impact of train running noise, on the acoustic
environment. According to its location, it is divided into subgrade sound barrier and
bridge sound barrier.
2.0.2 Post and panel sound barrier
A sound barrier, which is formed by inserting sound-absorbing or sound-insulating
sheet, between the uprights.
2.0.6 Sound-sensitive point
Noise-sensitive buildings or areas, such as hospitals, schools, institutions, scientific
research organizations, residences, nature reserves, etc.
2.0.7 Background noise
The noise, which is measured at the reference point or the sound receiving point, when
there is no railway noise source, within the control range of the sound barrier.
2.0.8 Insertion loss of sound barrier
Under the condition that the noise source, topography, landform, ground features,
meteorological conditions remain unchanged, The difference between the sound
pressure level of a specific location of a sound-sensitive target of the acoustic
environment, before and after the installation of the sound barrier.
3 Basic provisions
3.0.1 The sound barrier facilities shall be safe and reliable, easy to construct, conducive
to repair and maintenance.
3.0.2 The setting of sound barriers is strictly prohibited to interfere with railway visual
signals.
3.0.3 The location of the sound barrier shall meet the following requirements.
3.0.4 The sound barriers, which are installed in towns, scenic spots, tourist resorts, shall
not only coordinate with the main project, but also coordinate with the local natural
environment, architectural style, humanistic environment.
3.0.5 The sound barrier shall be naturally connected and smoothly transitioned, at the
cross-section change of the road and bridge connections, the station's access section,
the cable well. It shall take measures to prevent sound leakage.
4 Acoustic design
4.1 General provisions
4.1.1 The sound barrier shall be acoustically designed, according to the characteristics
of railway noise source intensity and the noise control requirements of sensitive targets,
in the acoustic environment.
4.1.3 The sound source equivalent height, which is used for the calculation of sound
barrier insertion loss, can be determined by the following methods.
4.1.4 The length and height of the sound barrier shall be calculated and determined,
according to the design target value of the insertion loss.
4.1.5 The length of the sound barrier shall include the distribution length of the acoustic
environment sensitive targets, along the line, AND the additional length at both ends.
The additional length can be calculated and determined according to the following
formula, which should not be less than 50 m.
4.1.6 When the design target value of the insertion loss of the sound barrier is greater
than 10 dB (A), the structural form of the sound barrier shall be compared, selected,
demonstrated; it shall take appropriate noise control measures.
4.2 Design target value
4.2.1 It shall adopt the A sound level, for the design target value of the sound barrier.
4.2.2 The design target value of the sound barrier shall be calculated and determined,
according to the following formula.
4.2.4 The relationship, between the design target value of the sound barrier and the
insertion loss value of the sound barrier, shall meet the requirements of the following
formula.
4.3 Insertion loss of sound barrier
4.3.1 The insertion loss of the sound barrier shall be calculated and determined,
according to the following formula.
4.3.6 Where there are other barriers or obstacles, other than the proposed sound barrier,
between the sound source and the sound receiving point, the sound attenuation can be
determined, according to Articles 4.3.2 ~ 4.3.4 of this Code.
5 Structural design
5.1 Materials
5.1.1 In addition to the requirements of "Acoustic elements of railway sound barrier"
TB/T 3122, the metallic acoustic elements of sound barriers shall also meet the
following requirements.
5.1.3 In addition to complying with the requirements of "Acoustic elements of railway
sound barrier" TB/T 3122, the transmission sound insulation panel of the sound barrier
shall also meet the following requirements.
5.1.4 The metallic and non-metallic acoustic elements, as well as the related products
of the sound barrier shall be shaped products, that meet the relevant national standards.
5.1.5 The acoustic elements of the sound barrier shall have waterproof performance; it
shall have necessary drainage measures.
5.1.7 The connecting members of the sound barrier shall meet the following
requirements.
5.1.8 The gravity mortar, which is used in the post and panel sound barrier, shall comply
with the requirements of "Spherical bearings for railway bridges" TB/T 3320.
5.1.9 The masonry materials and mortar grades, which are used for the masonry sound
barrier, shall comply with the provisions of "Code for design of masonry structures"
GB 50003.
5.2 Loads and load combinations
5.2.1 The sound barrier's load shall include self-weight, natural wind load, train wind
load, and other loads. Other loads shall consider seismic force, snow load, maintenance
load, according to the area where the sound barrier is located AND the facade form.
6 Auxiliary facilities
6.0.1 Drainage facilities shall be provided for the subgrade sound barrier. It shall take
measures to prevent sound leakage, at the drainage outlet. The drainage shall not cause
erosion of the subgrade slope.
6.0.3 The sound barrier, which has safety door, shall be provided with light storage
signs. It shall meet the following requirements.
6.0.4 The metal components of the sound barrier shall form an electrical connection.
The grounding design shall be carried out, in accordance with the relevant provisions
of "Technical code for lightning protection and earthing of railway" TB 10180.
6.0.5 The semi-enclosed and fully-enclosed sound barriers should be equipped with
maintenance and anti-fall devices. Rainwater centralized collection and discharge
facilities should be set up, at the locations where it crosses railways, public (roads) and
other facilities.
7 Interface design
7.0.1 The subgrade design shall reserve the conditions for setting up sound barriers. The
sound barrier's foundation should be designed and constructed, at the same time as the
subgrade.
7.0.4 The design load of the sound barrier of the bridge shall not be greater than the
design load of the sound barrier, which is reserved for the bridge.
7.0.5 When the equipment positions, such as signal reinforcement, need to be reserved
inside the fully-enclosed sound barrier, the installation conditions shall be reserved.
7.0.6 For the segment where the sound barrier needs to be installed in the long term, the
sound barrier foundation and installation conditions shall be reserved.
Explanation of wording in this code
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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