Detail of JT/T 327-2016

Introduction of JT/T 327-2016

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces JT/T 327-2004 Highway bridge expansion and contraction installation. The following main technical changes have been made with respect to JT/T 327-2004: ——The range of expansion and contraction quantity is adjusted (see Clause 1); ——The term and definition of expansion and contraction body have been deleted (see 3.4 of 2004 edition), and the term and definition of elastic bearing element have been added (see 3.4); ——The classification of expansion and contraction installations is revised and the rubber expansion and contraction installation is deleted (see 4.1.3 of 2004 edition); special-shaped steel single-seam expansion and contraction installations is changed into single-seam modular expansion and contraction installations (see 4.2 of this standard; 4.1.4 of 2004 edition); seamless expansion and contraction installation is added [see 4.1c)]; the types of modular expansion and contraction installations and pectinate plate expansion and contraction installations are refined (see 4.2, 4.3 and 4.4). ——The expression methods of product code are improved, and the structure schematic of the expansion and contraction installation is supplemented (see 4.5); ——The general requirements of expansion and contraction installations are supplemented and improved; the deformation performance requirements are improved (see 5.1.1); the water resistance requirements (see 5.1.2), bearing performance requirements (see 5.2.1) and durability requirements (see 5.2.2) are supplemented; ——The test methods of expansion and contraction installations are supplemented and improved, with the deformation performance test (see 7.1.5), water resistance test (see 7.1.6) and bearing performance test (see 7.1.7) supplemented, and welding quality inspection (see 7.2.4) and coating quality inspection (see 7.2.5) improved. This standard was proposed by and is under the jurisdiction of the National Technical Committee 223 on Traffic Engineering Facilities (Highway) of Standardization Administration of China (SAC/TC 223). The previous editions of this standard are as follows: JT/T 327-1997 and JT/T 327-2004. General technical requirements of expansion and contraction installation for highway bridge 1 Scope This standard specifies the classification, general requirements, technical requirements, test methods and inspection rules of expansion and contraction installations for highway bridge. This standard is applicable to the expansion and contraction installations used in highway bridge engineering with expansion and contraction quantity of 20 mm~3,000 mm. 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 193 General purpose metric screw threads - General plan GB/T 699 Quality carbon structure steels GB/T 700 Carbon structural steels GB/T 702 Hot-rolled steel bars - Dimensions, shape, weight and tolerances GB/T 706 Hot rolled section steel GB 912 Hot-rolled sheets and strips of carbon structural steels and high strength low alloy structural steels CB/T 985.1 Recommended joint preparation for gas welding, manual metal arc welding, gas-shield arc welding and beam welding GB/T 1184 Geometrical tolerancing - Geometrical tolerance for features without individual tolerance indications GB/T 1228 High strength bolts with large hexagon head for steel structures GB/T 1231 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washers for steel structures GB 1499.1 Steel for the reinforcement of concrete - Part 1: Hot rolled plain bars GB 1499.2 Steel for the reinforcement of concrete - Part 2: Hot rolled ribbed bars GB/T 1591 High strength low alloy structural steels GB/T 1690 Rubber, vulcanized or thermoplastic - Determination of the effect of liquids GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications GB/T 3274 Hot-rolled plates and strips of carbon structural steels and high strength low alloy structural 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 3672.1 Rubber - Tolerances of products - Part 1: Dimensional tolerances GB/T 4171 Atmospheric corrosion resisting structural steel GB/T 11345 Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment JB/T 5943 Construction machinery - General specifications for welding parts JT/T 4 Plate type elastomeric pad bearings for highway bridges JT/T 722 Specifications of protective coating for highway bridge steel structure JT/T 1039 Polyurethane plug expansion and contraction installation for highway bridges JTG D60 General code for design of highway bridges and culverts JTG D64 Specifications for design of highway steel bridge 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 expansion and contraction joint gap set in superstructure to gear to the structural deformation of bridge 3.2 expansion and contraction installation for highway bridge general term of various devices set at the expansion and contraction joints in order to make vehicles pass the bridge deck smoothly and gear to the deformation of bridge superstructure 3.3 expansion and contraction quantity sum of expansion and contraction deformation of expansion and compressive installation Note: Negative sign (-) indicates tensile deformation, and positive sign (+) indicates compressive deformation. 3.4 elastic bearing element general term of tension bearing and compression bearing in expansion and contraction installation 3.5 longitudinal stagger horizontal relative displacement of expansion and contraction installation along the center line of bridge   3.6 transverse stagger horizontal relative displacement of expansion and contraction installation along the direction vertical to the center line of bridge 3.7 vertical stagger vertical relative displacement of expansion and contraction installation along the direction vertical to the bridge deck 4 Classification 4.1 Expansion and contraction installations for highway bridge (hereinafter referred to as “expansion and contraction installations”) are classified into the following by expansion and contraction installation: a) modular expansion and contraction installation, coded as M; b) pectinate plate expansion and contraction installation, coded as S; c) seamless expansion and contraction installation, coded as W. 4.2 Modular expansion and contraction installations are classified into the following by the quantity of rubber sealing tape: a) single-seam ones, coded as MA; b) multi-seam ones, coded as MB. 4.3 Pectinate plate expansion and contraction installations are classified into the following by the stress conditions of pectinate plate: a) cantilever ones, coded as SC; b) simply-supported ones, coded as SS. 4.4 Simple-supported pectinate plate expansion and contraction installations are classified into the following by the relative position of toothed plate of the moveable pectinate plate and the expansion and contraction joint: a) those with the toothed plate of the movable pectinate plate at one side of the expansion and contraction joint, coded as SSA;   b) those with the toothed plate of the movable pectinate plate crossing the expansion and contraction joint, coded as SSB.

Contents of JT/T 327-2016

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 General requirements 6 Technical requirements 7 Test methods 8 Inspection rules Annex A (Normative) Requirements for the checking calculation of limit state of expansion and contraction installation Annex B (Normative) Test method for deformation performance Annex C (Normative) Test method for water resistance Annex D (Normative) Test method for bearing performance Annex E (Normative) Test method for clamping performance of rubber sealing tape