TB 10025-2019 PDF English
US$960.00 · In stock · Download in 9 secondsTB 10025-2019: Code for design of retaining structures of railway earthworks Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid TB 10025: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| TB 10025-2019 | English | 960 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Code for design of retaining structures of railway earthworks
| Valid |
| TB 10025-2006 | English | RFQ |
ASK
|
10 days
|
Code for design on retaining structures of railway subgrade
| Obsolete |
| TB 10025-2001 | English | RFQ |
ASK
|
11 days
|
Code for design on retaining engineering structures of railway subgrade
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: TB 10025-2019
TB 10025-2019: Code for design of retaining structures of railway earthworks---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/TB10025-2019
UDC
INDUSTRY STANDARD OF THE
PEOPLE��S REPUBLIC OF CHINA
J 127-2019
Code for design of retaining structures of railway
earthworks
Issued on. JULY 31, 2019
Implemented on. DECEMBER 01, 2019
Issued by. State Railway Administration
INDUSTRY STANDARD OF THE
PEOPLE��S REPUBLIC OF CHINA
Code for design of retaining structures of railway
earthworks
J 127-2019
Main drafting organization. China Railway Eryuan Engineering Group Co.,
Ltd.
Approved by. State Railway Administration
Date of implementation. December 1, 2019
2019 Beijing
Table of Contents
Foreword... 7
1 General... 10
2 Terms and symbols... 10
3 Basic provisions... 15
4 Design load... 20
5 Materials and properties... 25
6 Gravity retaining wall... 29
7 Cantilever and counterfort retaining wall... 40
8 Groove retaining wall... 48
9 Reinforced soil wall... 56
10 Soil nailing retaining wall... 64
11 Anchored wall... 70
12 Prestressed anchored cable... 79
13 Slide-resistant pile... 87
14 Pile-wall structure... 95
15 Gravity retaining wall on pile foundation and beam... 101
16 Composite pile structure... 105
17 Other structures... 110
Appendix A Common types and applicable conditions of retaining structure 117
Appendix B Track and train loads above the formation surface... 118
Appendix C Material performance parameters of structural members... 121
Appendix D Basic bearing capacity of foundation... 124
Appendix E Resistance design of reinforced concrete members... 130
Appendix F Calculation of maximum crack width of rectangular pile reinforced
concrete flexural members... 136
Appendix G Reference values of relevant parameters for design of groove
retaining wall... 138
Appendix H Reference values of anti-pullout design parameters for anchor rods
and cables... 139
Appendix J Anchor rod (cable) test... 140
Appendix K Selection of prestressed anchor cable and design parameters 146
Appendix L Reference value of anchor pile��s foundation factor... 149
Explanation of wording in this code... 152
1 General
1.0.1 This standard is formulated to unify the design technical criteria of the
retaining structures of railway earthworks, so that the design of the retaining
structure meets the requirements of safety, reliability, advanced technology,
reasonable economy and green environmental protection.
1.0.2 This code is applicable to the design of retaining structure of railway
earthworks and related projects.
1.0.3 The retaining structure of the railway earthwork shall be designed
according to track and train loads, engineering geology, hydrogeology,
environmental conditions.
1.0.4 The retaining structure design shall meet the requirements of safety,
applicability, durability.
1.0.5 The retaining structure for earthwork be well designed for connection with
bridge abutments, tunnel openings, catenary pillars, sound barrier foundations
and other projects.
1.0.6 Retaining structure��s design shall promote the use of safe and reliable
new technologies, new structures, new materials and new processes.
1.0.7 In addition to meeting this code, the design of the retaining structure shall
also comply with the relevant national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Retaining structure
Structures which are used to support and strengthen the rock-soil body and
maintain its stability.
2.1.2 Gravity retaining wall
A retaining structure that resists the earth pressure and prevents the soil from
slumping by the weight of the wall. When there is a counterfort platform on
the back of the wall, it is called a counterfort retaining wall.
2.1.4 Counterfort retaining wall
A retaining structure which is composed of standing arm plate, a toe plate, a
heel plate, a buttress, etc., which resists the earth pressure by the gravity of the
wall body and the soil body above the heel plate.
2.1.5 Groove retaining wall
A retaining structure of U-shaped which is composed of side walls and a
baseplate, that withstands earth pressure, water pressure, buoyancy,
meanwhile prevents surface water or groundwater from infiltrating.
2.2 Symbol
P0 - Track load;
Q - Train load;
q - Unit load;
��0 - Static earth pressure factor;
��a - Active earth pressure factor;
Ex - Horizontal earth pressure;
Ey - Vertical earth pressure;
3 Basic provisions
3.1 General provisions
3.1.1 The setting of subgrade��s retaining structure shall be determined in
combination with topography, geology, land use, environmental conditions, etc.
The following sections should be equipped with retaining structures.
3.1.2 The section where the retaining structure is set up shall be identified with
engineering geology, hydrogeological conditions, environmental conditions and
physical and mechanical properties of rock-soil.
3.1.5 Subgrade��s retaining structures located in soft soil, slopes and other
sections shall be checked for overall stability.
3.1.6 At certain intervals in the longitudinal direction of the retaining structure
and at the junction with other buildings, it shall provide expansion joints.
3.2 Design requirements
3.2.1 The design service life of the railway subgrade��s retaining structure is 100
years. It shall meet the relevant provisions of the current "Code for durability
design on concrete structure of railway" TB 10005.
4 Design load
4.1 General provisions
4.1.1 The load on the retaining structure of railway subgrade can be classified
according to Table 4.1.1 according to the time of action and the frequency of
occurrence. The train load used in the design shall comply with the provisions
of the current "Code for design on subgrade of railway" TB 10001.
4.1.2 The design of the retaining structure shall adopt the corresponding load
combination and safety factor according to the functional requirements of the
structure and the design conditions.
4.1.3 When the retaining structure is designed by the total safety factor method,
the load combination shall comply with the provisions of Table 4.1.3; when
designed by the limit state method, the value of the partial factor in the load
combination shall comply with the relevant requirements.
4.2 Main force
4.2.1 The action of earth pressure shall be determined based on the specific
conditions of the subgrade��s retaining structure, using active earth pressure,
static earth pressure or passive earth pressure, combined with engineering
experience, as multiplied by the corresponding earth pressure��s correction
factor. The passive earth pressure in front of the open-cut foundation��s retaining
wall can be disregarded.
4.2.4 The calculation of the action of water and soil below the normal water level
of the soaking retaining structure shall meet the following requirements.
4.3 Additional force
4.3.1 The soaked retaining structure shall consider the penetration force under
the following conditions.
4.4 Special force
4.4.1 The calculation of earthquake action shall comply with the provisions of
the current "Code for seismic design of railway engineering" GB 50111.The
static method can be used to calculate the seismic force on the rigid structure
and the fractured prism of the soil.
4.4.2 The earth pressure on the wall back of the retaining structure shall include
the horizontal seismic force. Gravity retaining structure or the non-gravity
retaining structures with large self-weight shall consider the horizontal seismic
forces on the structure.
4.4.3 In the case of flood level, the earth pressure on the wall back of the
retaining structure shall consider of the flood action; but it shall not be
considered at the same time as the seismic force.
5 Materials and properties
5.1 General provisions
5.1.1 The concrete, steel bar, geosynthetic material, filler, stone and cement
mortar used in the retaining structure shall be determined according to the
structure type, function, scope of application, application environment, etc.
5.2 Concrete, mortar rubble and cement mortar
5.2.1 Retaining structure may use reinforced concrete, plain concrete and flake
concrete.
5.2.2 The concrete strength shall be determined according to the standard
value of cube��s compressive strength. The standard value of the compressive
strength of the cube is a cube specimen with a side length of 150 mm which is
made and cured according to the standard method, which is measured by the
standard test method at 28d or the age specified in the design.
5.3 Steel
5.3.1 The steel bars, prestressed steel wires and steel strands used in the
retaining structure shall meet the following requirements.
5.4 Geosynthetics
5.5 Filler and geotechnical
5.5.1 When calculating the earth pressure behind the wall of the retaining
structure of the embankment section, the physical and mechanical indexes of
the filler shall be determined according to the test data.
6 Gravity retaining wall
6.1 General provisions
6.1.1 The gravity retaining wall is suitable for general areas, soaking areas and
earthquake areas. Gravity retaining wall may be installed on the shoulder,
embankment and cutting.
6.1.2 The height of gravity retaining wall shall meet the following requirements.
6.1.3 The wall material should be concrete, rubble concrete, etc. The rubble
stone content per unit volume of rubble concrete shall not exceed 20%.
6.1.4 The wall back type of gravity and counterbalanced retaining walls may be
selected according to Figure 6.1.4.For the shoulder section, it may choose the
counterbalanced retaining wall or a gravity retaining wall whose wall back is a
broken line.
6.2 Design and calculation
6.2.1 The calculation of earth pressure acting on the gravity retaining wall shall
meet the following requirements.
6.2.3 The buoyancy of the wall body shall comply with the provisions of clause
4.2.4 of this code.
6.2.4 The slide-resistance stability of the retaining wall shall be checked in
accordance with clause 3.22 of this code. The total sliding force T and total slide
resistance force R shall be calculated respectively according to formula (6.2.4-
6.3 Construction requirements
6.3.1 The base and foundation of the retaining wall shall meet the following
requirements.
6.3.4 The longitudinal connection design of the retaining wall shall meet the
following requirements.
6.3.5 Retaining walls shall be provided with inspection ladders at appropriate
locations. Steps should be provided at both ends of the cutting��s retaining wall.
7 Cantilever and counterfort retaining wall
7.1 General provisions
7.1.1 Cantilever and counterfort retaining wall are suitable for general areas,
soaking areas and earthquake areas. Cantilever retaining wall��s height should
not be greater than 6 m, counterfort retaining wall��s height should not be greater than 10 m.
7.1.2 Cantilever retaining wall and counterfort retaining wall shall adopt
reinforced concrete structure, the form of which is as shown in Figure 7.1.2-1
and Figure 7.1.2-2.
7.2 Design and calculation
7.2.1 When the cantilever or counterfort retaining wall is installed on the
shoulder, the lateral and vertical earth pressure on the structure caused by the
track and train load may be calculated according to the elastic theory. The
stress distribution is as shown in Figure 7.2.1.
7.3 Construction requirements
7.3.1 The width of the top of the cantilever retaining wall shall not be less than
0.2 m. When the height of the wall is greater than 4 m, it should set a chamfer
on the inside of the standing arm plate. The width of the top of the counterfort
retaining wall shall not be less than 0.3 m.
7.3.6 The thickness of the concrete protective layer shall comply with the
provisions of the current "Code for durability design on concrete structure of
railway" TB 10005.
7.3.7 When pouring concrete, the pouring shall be completed at one time. If
there is a break, the new concrete and the poured concrete shall be firmly
bonded. The tenon shall be poured at the same time as the concrete of the
baseplate.
7.3.8 The filler shall be compacted in layers. The reverse filter layer shall be
constructed in time during the filling process.
8 Groove retaining wall
8.1 General provisions
8.1.1 Groove retaining wall is suitable for cuttings with high groundwater level
and cuttings or embankment sections with restricted grading conditions. The
common structural form is as shown in Figure 8.1.1.
8.1.2 The side wall��s cantilever height should not be greater than 8 m; the top
width should not be less than 0.3 m.
8.1.3 The design elevation of the side wall top of the groove retaining wall shall
be 0.5 m higher than the design ground water level. It shall take water blocking
measures in the sections of waterlogging and water accumulation.
8.2 Design and calculation
8.2.1 The groove retaining wall shall be subjected to stability check, structural
design, water-proof and drainage design. The stability check shall include the
anti-floating, anti-sliding, anti-overturning, compressive stress of the base, the
deformation of the foundation.
8.3 Construction requirements
8.3.1 The constructional requirements of the reinforcing rate, steel bar overlap,
anchoring length of the groove retaining wall and the uplift pile shall comply with
the relevant provisions of the current "Code for design of concrete structures"
GB 50010.The requirements for uplift pile��s construction shall also meet the
following requirements.
8.3.2 For groove retaining wall, it may set the settlement joints, expansion joints
at the interval of 15 m ~ 20 m. The joint width should be 20 mm ~ 30 mm.
Meanwhile it shall meet the requirements of clause 3.1.6 of this code.
8.3.3 For the groove retaining walls, it shall be provided with force transmission
rods at the settlement joints and expansion joints, which shall meet the following
requirements.
8.3.6 Reinforced concrete materials used for groove retaining walls shall
comply with the provisions of clause 5 of this code.
8.3.7 The drain holes and reverse filter layers of embankment type groove
retaining walls shall comply with the provisions of clause 7 of this code.
9 Reinforced soil wall
9.1 General provisions
9.1.1 The reinforced soil wall is suitable for general areas and earthquake areas.
It can be set on the shoulder or embankment slope. The height of the single-
stage wall should not be greater than 10 m.
9.2 Design and calculation
9.2.1 Reinforced soil wall shall be checked for internal and external stability; if
necessary, it shall perform post-construction settlement check and horizontal
deformation check, etc. The internal stability check shall include the tie-bar
strength, uplift force check, wall panel structure design, etc.
9.2.3 The internal stability check shall meet the following requirements.
9.2.5 During external stability design, the anti-sliding and anti-overturning
stability check shall comply with the provisions of clause 6 of this code. The
compressive stress of the base may be calculated according to formula (9.2.5).
9.3 Construction requirements
9.3.1 The structural design of the reinforcement material of the reinforced soil
wall shall meet the following requirements.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of TB 10025-2019 be delivered?Answer: The full copy PDF of English version of TB 10025-2019 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of TB 10025-2019_English with my colleagues?Answer: Yes. The purchased PDF of TB 10025-2019_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- TB 10025-2019 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version TB 10025-2019?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version TB 10025-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of TB 10025-2019?A step-by-step guide to download PDF of TB 10025-2019_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "TB 10025-2019".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|