Standard No.:	JTG/T F50-2011
English Name:	Technical Specification for Construction of Highway Bridge and Culvert
Chinese Name:	公路桥涵施工技术规范
Professional Classification:	JT    Professional Standard - Transport
Issued by:	Ministry of Transport
Issued on:	2011-6-7
Implemented on:	2011-8-1
Status:	superseded
Superseded by:	JTG/T 3650-2020 Technical code for construction of hignway tunnel
Superseded on:	2020-10-1
Superseding:	JTJ 041-2000 Technical Specifications for Construction of Highway Bridges and Culverts
Language:	English
File Format:	PDF
Word Count:	150000 words
Price(USD):	600.0
Delivery:	via email in 1 business day

1 General Provisions 1.0.1 This specification is established in order to adapt the demand of highway bridge and culvert engineering construction of China, improve the construction technique level and guarantee the construction quality and safety. 1.0.2 This specification is applicable to the construction for all-level newly-built, renovated and extended highway bridge and culvert engineering. 1.0.3 The construction of highway bridge and culvert engineering shall meet the requirements of the design document and shall meet the requirements of safety, duration and energy conservation, and shall be of civilized construction. 1.0.4 The construction of highway bridge and culvert engineering shall comply with laws and regulations with respect to national construction engineering quality; the perfect quality assurance system shall be established to define quality responsibility, strengthen quality control and guarantee engineering quality. 1.0.5 The construction of highway bridge and culvert engineering shall comply with laws and regulations related to national safety production; the perfect safety production management system shall be established to define safety responsibility, strictly enforce safety operation specification, guarantee occupational health of construction personnel and guarantee safety construction. 1.0.6 The construction of highway bridge and culvert engineering shall comply with laws and regulations related to national environment protection, achieve optimal land utilization, less farmland occupation, pollution abatement and environment protection. After construction completion, various temporary works, temporary auxiliary facilities, temporary land, waste earth, etc. shall be treated timely for the purpose of achieving site cleaning upon construction completion. 1.0.7 The construction of highway bridge and culvert engineering shall positively popularize reliably-used new technology, new process, new material and new equipment. 1.0.8 The construction of highway bridge and culvert engineering shall not only comply with those specified in this specification, but also meet the specifications in the current relevant national and professional standards. 2 Terms 2.0.1 Ring curtain wall de-watering It refers to a circle of water-separating curtain set outside foundation pit side line for the purpose of separating water source, reducing seeping water quantity, and preventing drift sand, bursting, piping, underground erosion, etc. 2.0.2 Large diameter pile It refers to the cast-in-situ bored pile with diameter larger than or equal to 2.5m. 2.0.3 Super long pile It refers to the cast-in-situ bored pile with pile length larger than or equal to 90m. 2.0.4 High strength concrete It refers to the concrete with strength grade C60 or above. 2.0.5 High performance concrete It refers to the concrete that is prepared with low water-cement ratio, large high-grade admixture and strict quality control measure under normal temperature by adopting common material and common process of concrete and has good construction operation performance and has high durability, high dimensional stability and higher strength after hardening. 2.0.6 Mass concrete It refers to the cast-in-site concrete that the dimension of the minimum side is larger than or equal to lm and the measures must be taken to avoid crack arising from too large internal surface temperature difference due to hydration heat. 2.0.7 Surface factor of structure It refers to the ratio of structure cooling area (m2) and structure volume (m3). 2.0.8 Span by span method with stepping formwork It refers to the construction method by applying prestress span by span by virtue of longitudinally moved support and formwork on pier and by casting beam concrete thereon span by span. 2.0.9 Cast-in-place cantilever method It refers to the construction method by applying prestress section by section through casting concrete beam to the mid-span symmetrically section by section with special equipment at along-bridge both sides taking the pier as the center. 2.0.10 Movable suspended scaffolding It refers to the main process equipment that is used for bearing beam deadweight and construction load when casting concrete beam with cantilever method, capable of moving up and specially designed. The key component covers bearing system, lifting system, anchorage system, traveling system, formwork and support system. 2.0.11 Construction joint It refers to the joint formed between before- and post-cast concrete due to design or construction required graded casting. 2.0.12 Balance cantilever erection method It refers to the construction method by applying prestress section by section through assembling precast block of concrete beam to the mid-span symmetrically section by section with special equipment at along-bridge both sides taking the pier as the center. 2.0.13 Segmental construction span by span It refers to the construction method by applying prestress span by span through assembling precast beam concrete block with special equipment span by span. 2.0.14 Support It refers to a temporary structure used for supporting formwork or other construction load. 2.0.15 Corbel It refers to the support assembled with embedded parts and steel members when constructing some cantilever parts of the bridge. 2.0.16 Incremental launching method It refers to the construction method making temporary sliding support passing through each pier top position by casting or assembling beam in bridge head section by section, installing guide beam in front end of the beam, and longitudinally pushing (pulling) or hauling with equipment such as jack. 2.0.17 Camber It refers to the correction opposite to displacement direction reserved during the construction or manufacturing with a view to counteracting the displacement (deflection) of such structures as beam, arch and truss produced under the action of loads. 2.0.18 Construction load It refers to temporary load applied on structure or member in construction stage, including construction machinery and equipment, formwork and other materials, crowd, wind force, single-direction pushing force of arch bridge, etc. 2.0.19 Cable-stayed stability system It refers to a specially designed temporary device, including wind cable and its auxiliary facilities, for the purpose of guaranteeing the stability of permanent structure or temporary structure during construction process. 2.0.20 Erection with cableway method It refers to the construction method transporting and installing bridge members by utilizing cables supported on the cable bent tower. 2.0.21 Construction by swing method It refers to the construction method by precasting two half-hole bridge span structures with topography and rotating and positioning mid-span closure on pier or abutment. 2.0.22 Test assembling It refers to the assembling carried out before installation and construction in order to inspect whether the precast member meets the installation quality requirements. 2.0.23 Catwalk It refers to the aerial construction passage erected for the construction demand of suspension bridge superstructure and generally supported by cables. 2.0.24 Airspinning method It refers to an erection method forming main cable of suspension bridge by weaving single steel wire between anchors up and down. 2.0.25 Shop-fabricated parallel wire strand method It refers to an erection method forming main cable of suspension bridge through hauling and positioning anchorage from one end anchor to another end anchor by prefabricating multiple parallel steel wire to cable strand. 2.0.26 Jack-in construction method It refers to the construction method by utilizing equipment such as jack to gradually jack prefabricated box type or circular pipe type structure into subgrade in order to compose vertical crossing passage or culvert. 3 Construction Preparation and Construction Survey

Contents 1 General Provisions 2 Terms 3 Construction Preparation and Construction Survey 3.1 Construction Preparation 3.2 Construction Survey 4 Steel Bar 4.1 General Requirements 4.2 Processing of Steel Bar 4.3 Connection of Steel Bar 4.4 Colligation and Installation of Steel Bar 5 Formwork and Support 5.1 General Requirements 5.2 Formwork and Support Design 5.3 Fabrication and Installation of Formwork 5.4 Fabrication and Installation of Support 5.5 Dismantlement of Formwork and Support 6 Concrete Work 6.1 General Requirements 6.2 Cement 6.3 Fine Aggregate 6.4 Coarse Aggregate 6.5 Water 6.6 Admixtures 6.7 Additives 6.8 Concrete Mix Proportion 6.9 Concrete Mixing 6.10 Concrete Transportation 6.11 Concrete Pouring 6.12 Concrete Curing 6.13 Mass Concrete, Freezing Resistant Concrete and Seepage Resistant Concrete 6.14 High Strength Concrete 6.15 High Performance Concrete 6.16 Quality Inspection 7 Prestressed Concrete Work 7.1 General Requirements 7.2 Prestressed Tendon and its Fabrication 7.3 Anchorage, Fixture and Connector 7.4 Pipe 7.5 Concrete Pouring 7.6 Prestress Application 7.7 Pretensioning Method 7.8 Post-tensioning 7.9 Mud-jacking and Sealing Anchor of Post Tensioning Pore Path 7.10 Non-cementation Pre-stress 7.11 External Prestress 7.12 Quality Control and Inspection 8 Filling Pile of Drilling (Excavation) Hole 8.1 General Requirements 8.2 Bored Pile 8.3 Bored Pile in the Area of Karst, Exhausted Area and Other Special Zones 8.4 Large Diameter Pile and Super Long Pile 8.5 Post-pressure Grouting at the Pile Toe 8.6 Digging Hole Filling Pile 8.7 Quality Inspection and Quality Criteria 9 Sinking Pile 9.1 General Requirements 9.2 Fabrication of Pile 9.3 Lifting, Deposit and Transportation of Pile 9.4 Bearing Capacity of Trial Pile and Pile Foundation 9.5 Pile Sinking 10 Sunk Well 10.1 General Requirements 10.2 Sunk Well Fabrication 10.3 Sunk Well Floating and Positioning 10.4 Sunk Well Settlement and Implantation 10.5 Base Inspection and Sunk well Back Cover 10.6 Well Hole Filling and Top Plate Pouring 10.7 Quality Inspection and Quality Criteria 11 Underground Diaphragm Wall 11.1 General Requirements 11.2 Construction Platform and Guide Wall 11.3 Construction of Underground Diaphragm Wall 12 Open-cut Foundation 12.1 General Requirements 12.2 Rock-soil Cofferdam 12.3 Foundation Pit 12.4 Foundation Pit Excavation and Water Drainage 12.5 Foundation Treatment 12.6 Foundation Inspection 13 Extension of Foundation, Bearing Platform and Abutment 13.1 General Requirements 13.2 Foundation Extension 13.3 Bearing Platform 13.4 Pier and Abutment 13.5 Abutment Cap and Bent Cap 13.6 Slabstone Concrete 14 Masonry 14.1 General Requirements 14.2 Material 14.3 Masonry Abutment 14.4 Ancillary Works and Back Filling 14.5 Masonry Pointing and Maintenance 14.6 Reinforced Earth Abutment 14.7 Quality Inspection and Quality Criteria 15 Arch Bridges 15.1 General Requirements 15.2 Arch Center 15.3 Cast-in-place Concrete Arch Ring 15.4 Construction without Support or with a Few Supports 15.5 Construction of Swivel 15.6 Stiffening-frame Arch 15.7 Cantilever Placing Arch 15.8 Steel-pipe Concrete Arch 15.9 Assembled Concrete Truss Arch and Rigid Frame Arch 15.10 Steel Arch Bridge 15.11 Stone Arch Bridge 15.12 Structure on the Arch 15.13 Construction Control 16 Reinforced Concrete and Prestressed Concrete Beam Bridge 16.1 General Requirements 16.2 Cast-in-site Beam Bridge on the Support 16.3 Cast-in-place Hole-by-hole Construction for Forms on Traveler 16.4 Fabricated bridge Construction 16.5 Cantilever Placement 16.6 Cantilever Erection 16.7 Incremental Launching Construction 16.8 Whole-pore Precast Installation Box Beam 16.9 Slant Legged Rigid Frame 16.10 Splice Construction for Widening and Renovation of Girder Bridge 17 Stayed-cable Bridge 17.1 General Requirements 17.2 Cable Bent Tower 17.3 Main Beam 17.4 Inhaul cable 17.5 Superstructure Construction Control 17.6 Cable Stayed Bridge with Short Tower 17.7 Cable Stayed Bridge without Backstays 18 Suspension Bridge 18.1 General Requirements 18.2 Anchor 18.3 Cable Bent Tower 18.4 Cable Saddle 18.5 Catwalk 18.6 Main Cable Works 18.7 Rope Clip and Hanger 18.8 Stiff Girder 18.9 Self Anchorage Suspension Bridge 19 Steel Bridge 19.1 General Requirements 19.2 Material 19.3 Parts Manufacturing 19.4 Assembly 19.5 Welding 19.6 Welding Inspection 19.7 Member Bar Straightening 19.8 Treatment of High Strength Bolt Assembly And Friction Surface 19.9 Test Assembling 19.10 Surface Cleaning and Inplant Painting 19.11 Acceptance 19.12 Packing, Storage and Transport 19.13 Field Erection 20 Bridge in Ocean Environment 20.1 General Requirements 20.2 Epoxy Coated Reinforcement 20.3 Concrete Works 20.4 Foundation and Abutment 20.5 Anti-corrosion for Steel Pipe Pile 20.6 Sdditional Anti-corrosion for Concrete 20.7 Oversea Construction Safety 21 Bridge Deck and Ancillary Works 21.1 General Requirements 21.2 Bearing 21.3 Expansion Device 21.4 Water-proofing and Drainage of Bridge Deck 21.5 Pavement of Concrete Bridge Deck 21.6 Steel Bridge Deck Pavement 21.7 Protection Facilities for Bridge Deck 21.8 Transition Slab at Bridge Head 22 Culvert 22.1 General Requirements 22.2 Concrete Pipe Culvert 22.3 Corrugated Steel Culvert 22.4 Inverted Siphon 22.5 Arch Culvert and Slab Culvert 22.6 Box Culvert 22.7 Culvert Extension 23 Channel Bridge and Culvert 23.1 Bridge and Culvert Jack-in Construction 23.2 Water-proof and Drainage 24 Construction in Winter, Rainy Period and Hot Period 24.1 General Requirements 24.2 Construction in Winter 24.3 Construction in Rainy Period 24.4 Construction in Hot Period 25 Safety Construction and Environmental Protection 25.1 General Requirements 25.2 Safety Construction 25.3 Environmental Protection 26 Project Handover Appendix A1 Quality Acceptance Content and Standard of Welded Steel Bar Appendix A2 Design Principles and Property Class of Steel Bar Mechanical Connection Joints Appendix B1 Technical Requirements of Additives Appendix B2 Concrete Preparation Strength Calculation Appendix B3 Concrete Electric Flux Rapid Determination Method Appendix C1 Calculation of Mean Tension Force of Pre-Stressed Reinforcing Steel Appendix C2 Test of Pre-Stress Loss Appendix C3 Fluidity test of Mud-Jacking Serosity in Post Tensioning Pre-Stressed Pore Path Appendix C4 Free Bleeding Rate and Free Expansion Ratio Test of Mud-Jacking Serosity Appendix C5 Test of Bleeding Rate among Steel Wires Appendix C6 Test of Pressure Bleeding Rate Appendix C7 Filling Degree Test Appendix D Determination Method of Various Performance Index of Slurry Appendix E Test Method of Test Pile Appendix F1 Welding Process Qualification Appendix F2 Ultrasonic Inspection Appendix F3 Test Method of Antiskid Coefficient of High-strength Bolt Connection Working Explaination of This Specification