Standard No.:	JT/T 391-2019
English Name:	Pot bearing for highway bridge
Chinese Name:	公路桥梁盆式支座
Chinese Classification:	P28    Bridge and culvert engineering
Professional Classification:	JT    Professional Standard - Transport
Issued by:	Ministry of Transport
Issued on:	2019-05-30
Implemented on:	2019-9-1
Status:	valid
Superseding:	JT/T 391-2009 Pot Bearings for Highway Bridges
Language:	English
File Format:	PDF
Word Count:	11500 words
Price(USD):	340.0
Delivery:	via email in 1 business day

Pot bearing for highway bridge 1 Scope This standard specifies the product classification, structural forms, models, technical requirements, test methods, inspection rules as well as marking, packaging, transportation and storage of pot bearings for highway bridges. This standard is applicable to the production, inspection and use of pot bearings with design bearing capacity of 1MN~80MN for highway bridges. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties GB/T 699 Quality carbon structure steels GB/T 700 Carbon structural steels GB/T 1040.3 Plastics - Determination of tensile properties - Part 3: Test conditions for films and sheets GB/T 1184 Geometrical tolerancing - Geometrical tolerances for features without individual tolerance indications GB/T 1591 High strength low alloy structural steels GB/T 1632.3 Plastics - Determination of the viscosity of polymers in dilute solution using capillary viscometer - Part 3: Polyethylenes and polypropylenes GB/T 1682 Rubber, vulcanized - Determination of low-temperature brittleness - Single test piece method GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications GB/T 2040 Copper and copper alloy sheet GB/T 3077 Alloy structure steels GB/T 3280 Cold rolled stainless steel plate, sheet and strip GB/T 3323 Radiographic examination of fusion welded joints in metallic materials GB/T 3398.1 Plastics - Determination of hardness - Part 1: Ball indentation method GB/T 3512 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat resistance tests - Air-oven method GB/T 6031 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD) GB/T 7233.1 Steel castings - Ultrasonic examination - Part 1: Steel castings for general purposes GB/T 7759.1 Rubber, vulcanized or thermoplastic - Determination of compression set - Part 1: At ambient or elevated temperatures GB/T 7762 Rubber, vulcanized or thermoplastic - Resistance to ozone cracking - Static strain test GB/T 11345 Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment GB/T 11352 Carbon steel castings for general engineering purpose HG/T 2198 Vulcanized rubber - The general requirements for the physical test method HG/T 2502 5201 silicone grease JB/T 5936 Engineering machinery - General technical specifications for mechanical processed parts JB/T 5943 Construction machinery - General specifications for welding parts JT/T 722 Specifications of protective coating for highway bridge steel structure JT/T 901 Polymer materials sliding plate for bridge bearings 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1.1 pot bearing bearing using the rubber plate sealed in the steel pot to bear the dead load and live load of the superstructure and transfer the load to the sub-structure

Foreword i 1 Scope 2 Normative references 3 Terms, definitions and symbols 4 Classification, structural forms and models 5 Technical requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage Annex A (Normative) Test method for vertical bearing capacity of bearings Annex B (Normative) Test method for horizontal bearing capacity of bearings Annex C (Normative) Test method for friction coefficient of bearings Annex D (Normative) Test method for bearing rotation angle Annex E (Informative) Description of bearing installation (example)