JT/T 1269-2019Plate type rubber expansion device for highway bridge (English PDF)

Foreword

This standard is in accordance with GB/T Draft the rules given in 1-2009.

This standard is proposed and managed by the National Technical Committee for Traffic Engineering Facilities (Highway) Standardization (SAC/TC 223).

This standard was drafted. Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd., Shanghai Pengpu Rubber Products Co., Ltd., Tong University of Hong Kong, Hongrun Construction Group Co., Ltd.

Introduction

The issuer of this document draws attention to the fact that the declaration of compliance with this document may involve 4. 2 Structural form, 6. 1 General requirements and Appendix A Telescopic device series product installation dimensions and patent number QL.2014 2 673 343. 7 Patents related to "Road Bridge Noise Reduction Telescopic Device" use.

The issuing authority of this document has no position on the authenticity, validity and scope of the patent.

The patent holder has assured the issuing authority of this document that he is willing to work with any applicant on reasonable and non-discriminatory terms and conditions.

Negotiating patent licenses. The patent holder's statement has been filed with the issuing authority of this document. Related information can be contacted via Way to get.

Names of patent holders. Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd., Shanghai Pengpu Rubber Products Co., Ltd.

Address. 3/F, Block E, Lane 1577, Jiangchang West Road, Shanghai Postcode..200436 Please note that in addition to the above patents, some content of this document may still involve patents. The issuer of this document is not responsible for identifying these Li's responsibility.

JT/T 1269-2019

Highway bridge plate rubber telescopic device

1 Scope

This standard specifies the structural form, specifications and models, technical requirements, test methods, and inspection regulations of highway bridge plate rubber telescopic devices.

Regulations, and marking, packaging, transportation, and storage requirements.

This standard applies to the production, inspection and use of telescopic devices for bridges with a telescopic amount of 80mm to.200mm.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document.

GB/T 528 Determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber GB/T 985. 1 Recommended grooves for gas welding, electrode arc welding, gas shielded welding and high energy beam welding GB/T 1184 Shape and position tolerances without tolerance values GB 1495 Limits and measurement methods for noise outside the vehicle during acceleration GB/T 1591 Low-alloy high-strength structural steel GB/T 1682 Determination of low temperature brittleness of vulcanized rubber-Single specimen method GB/T 1689 Determination of abrasion resistance of vulcanized rubber (using Akron wear tester) GB/T 1690 Test method for liquid resistance of vulcanized rubber or thermoplastic rubber GB/T 1804 Tolerances for linear and angular dimensions without general tolerances GB/T 3512 Vulcanized rubber or thermoplastic rubber hot air accelerated aging and heat resistance test GB/T 3672. 1 Tolerances for rubber products Part 1. Tolerances on dimensions GB/T 3785. 1 Electroacoustic sound level meters Part 1. Specifications GB/T 5782 Hex Head Bolts GB/T 6031 Determination of hardness of vulcanized rubber or thermoplastic rubber (10IRHD to 100IRHD) GB/T 7659 Castings for welded structures GB/T 7759. 1 Determination of compression set of vulcanized rubber or thermoplastic rubber Part 1. Under normal and high temperature conditions GB/T 7760 Determination of adhesion strength between vulcanized rubber or thermoplastic rubber and hard board 90 ° peel method GB/T 7762 Vulcanized rubber or thermoplastic rubber resistance to ozone cracking static tensile test GB/T 1145 Nondestructive Testing of Welds Ultrasonic Testing Technology, Test Grades and Evaluation GB/T 15089 Classification of motor vehicles and trailers GB/T 20688. 1 Rubber bearings Part 1. Test methods for vibration-isolated rubber bearings HG/T 3738 Solvent-based multipurpose neoprene adhesive JB/T 5943 General technical conditions for welding of construction machinery JT/T 327 General technical requirements for highway bridge telescopic devices JT/T 722 Technical requirements for anticorrosive coating of steel structures for highway bridges JT/T 842 High-damping isolation rubber bearings for highway bridges JT/T 1269-2019

3 Terms and definitions

The following terms and definitions apply to this document.

Plate bridge rubber telescopic device for highway bridges plate typex rubex exemplify forward foray bridge the corrugated rubber plate with high-wear rubber material of the tire pattern and the high-damping vibration-damping rubber support are adopted to reduce impact noise and vibration Telescopic device with vibration function.

Maximum Noise Level of Telescopic Device. maximum noise, lease, ofx, extension, device the maximum A-weighted noise level generated by the test vehicle when it passed the telescopic device at a constant speed of 60 km/h was 3 meters away from the centerline of the vehicle.

Noise level of the telescopic device, resequent, perforance, ofx, and extension the maximum noise level generated by a vehicle through a telescopic device is relative to the increase in the level of asphalt.

4 Classification, structure, specifications and models

4.1 Classification

Highway bridge plate rubber telescopic device is divided into.

a) Normal temperature type. Applicable ambient temperature-25 °C ~ 60 °C, expressed by code C;

b) Cold-resistant type. Applicable ambient temperature-40 °C ~ 60 °C, expressed by code F.

4.2 Structure

4. 2. 1. Highway bridge plate rubber telescopic device (hereinafter referred to as telescopic device) is composed of multiple standard segments and non-standard segments.

The section consists of side longitudinal steel beams, corrugated rubber plates (the surface layer is a tire pattern high wear-resistant rubber material), stiffened steel plates, support top steel plates, and high-damping rubber it consists of rubber support, anchor steel plate, positioning and fixing bolt, support bottom steel plate, anchor steel bar, section joint tightening screw and so on. Telescopic device structure shown Opinions Figure 1.

4.2.2 Standard segment length of the telescopic device 2m, stitching on site. Concave and convex grooves are set on the end faces of segment seams, and self-vulcanizing rubber is used.

The adhesive bond closes, and the joints are tightened and fixed by the joint tightening screw on both sides.

4.3 Specifications

See Table 1 for telescopic device specifications and Appendix A for installation dimensions of the series.

Table 1 Telescopic device specifications

model

Allowable telescopic amount (Mm) Beam spacing (Mm) Standard displacement (mm) Down the bridge Elongation amount Compression amount Yokohashi Vertical and horizontal corners (Rad) JJZ-80 80 145 45 35 35 ± 24. 03 JJZ-120 120 120 210 50 50 ± 36. 03 JJZ-160 160 270 90 70 ± 48. 03 JJZ-2000.2000 3610 110 90 ± 600. 03 JT/T 1269-2019 Explanation.

1 --- side longitudinal steel beams; 9 --- anchored steel bars;

2 --- corrugated rubber sheet (surface layer is made of tire pattern high wear-resistant rubber material); 10 --- segment seam tightening screw 3 --- stiffened steel plates; 11 --- embedded steel bars;

4 --- supporting the top steel plate; 12 --- concave and convex groove on the end face of the segment seam 5 --- high damping rubber support; 13 --- supporting steel pad;

6 --- anchor steel plate; 14 --- steel beam;

7 --- locating and fixing bolts; 15 --- concrete beam.

8 --- supporting bottom steel plate;

Figure 1 Schematic structure of the telescopic device

4.4 Model

The telescopic device model is shown in Figure 2.

Figure 2 Model of telescopic device

Example 1. Normal temperature type highway bridge plate rubber telescopic device with an expansion and contraction amount of 120mm, whose model is expressed as JJZ-120-(C);

Example 2. Cold-resistant highway bridge plate rubber telescopic device with an expansion and contraction amount of 160mm, its model number is JJZ-160-(F).

JT/T 1269-2019

5 Basic requirements

5.1 Under vehicle load, the components and connections of the telescopic device should be safe and reliable, and should meet the limit under JT/T 327 vehicle load.

Status requirements.

5.2 Under normal design, production, installation, and operation and maintenance conditions, the design service life of the telescopic device should be not less than 15 years and easy to replace.

6 Technical requirements

6.1 General requirements

6.1.1 Performance requirements the telescopic device shall meet the requirements of vertical and horizontal three-dimensional deformation of the bridge and the requirements of Table 2.

Table 2 Telescopic device performance requirements

Performance requirements

1 Maximum horizontal frictional resistance during tension and compression (kN/m) JJZ-80 <=50 JJZ-120 <=60 JJZ-160 <= 65 JJZ-200 <=75 (2) Uniformity of displacement during tension and compression (mm) Deviation of displacement per unit-3 ~ + 3

3 Standard displacement See Table 1 along the bridge the cross bridge direction is shown in Table 1.

4 See Table 1 for vertical and horizontal corners

6.1.2 Noise

The value of noise generated by vehicles passing through the telescopic device relative to the flat asphalt pavement should not be greater than 5 dB (A).

6.1.3 Waterproof

The telescopic device should be provided with a reliable waterproof system, filled with water for 24 hours without leakage.

6.1.4 Anchor members the anchoring members of the telescopic device shall be provided with reliable connections without loosening and cracking.

6.1.5 Highly damped rubber support the mechanical properties of high-damping and vibration-damping rubber bearings shall comply with JT/T 842 and GB/T 20688. 1 Regulations.

6.2 Appearance

6.2.1 The appearance surface of the telescopic device should be flat and clean, without mechanical damage, burrs, and rust. Welds should be uniform without pores or slag inclusions and other defects.

6.2.2 The rubber surface shall be smooth and free of defects.

JT/T 1269-2019

6.2.3 The coating surface should be flat and free from peeling, scratches and wrinkles.

6.3 Materials

6.3.1 The selection and performance of steel should meet the requirements in Table 3.

Table 3 Selection and performance requirements of steel

Parts steel selection performance requirements Side longitudinal steel beam 0 °C < Ts Q345B-20 °C < Ts<=0 °C Q345C Ts<= -20 °C Q345D 0 °C < Ts YG 270-480H GB/T 1591 GB/T 7659 Stiffened steel plate, anchor steel plate, Support top steel plate, support bottom steel plate 0 °C < Ts Q345B-20 °C < Ts<=0 °C Q345C Ts<= -20 °C Q345D GB/T 1591 Locating and fixing bolts 8. Grade 8 high-strength bolt No. 45 steel GB/T 5782 Note. Ts stands for minimum temperature.

6.3.2 The performance of the rubber compound of the high-damping vibration-damping rubber support, the corrugated rubber plate, and the highly wear-resistant rubber surface layer shall meet the requirements of Table 4.

Table 4 Performance requirements of rubber materials for high-damping vibration-damping rubber bearings, corrugated rubber plates, and high-wear rubber surface layers

performance

Claim

High-damping rubber support corrugated rubber sheet Hardness (IRHD) 60 ± 5 55 ± 5 63 ± 5 Breaking strength (MPa) >=18 >=18 >=20 Elongation at break (%) >=650 >=550 >=550 Brittleness temperature (°C) <= -50 <= -40 <= -40 Compression permanent deformation (70 ° C × 24h, compression rate 25%) (%) Ozone resistance (50ppm) 30% elongation (40 °C × 96h) No cracks, no cracks, no cracks Abrasion resistance (Akron wear amount) (cm3/1.61km)--<=0. 8 Change rate of hot air aging test (70 ° C × 168h) Breaking strength (MPa) ± 15 ± 15 ± 15 Elongation at break (%) ± 20 ± 20 ± 20 Change in hardness (IRHD)-5 to + 10 to 5 to + 10 to 5 to + 10 Peel strength of rubber, steel and steel plate (MPa) >=10 >=12 >=12 Oil resistance (No. 1 standard oil, 23 ° C × 168h) Volume change (%) < + 40 < + 15 < + 15 Change in hardness (IRHD) <-25 <-20 <-10 6. 3. Solvent-based multi-purpose rubber adhesives for joints with concave and convex grooves on the end of 3-segment joints shall comply with the requirements of HG/T 3738

6.4 Craftsmanship

6.4.1 Steel components shall be manufactured according to the requirements of the design drawings, and their deviations shall meet the design requirements. Limit deviation of machined parts without tolerance dimension JT/T 1269-2019 it shall meet the requirements of Class V in GB/T 1804, and the tolerances of the shapes and positions shall be in accordance with the requirements of Class L in GB/T 1184.

6.4.2 High-damping vibration-damping rubber support, corrugated rubber sheet (surface layer is made of tire pattern high wear-resistant rubber material) should be processed according to the design drawings Manufacturing, its deviation should meet the design requirements, and its height and other dimensional tolerances should comply with GB/T 3672. Provision of M2 level in 1.

6.4.3 Side longitudinal steel beams and corrugated rubber plates (surface layer is made of tire pattern high wear-resistant rubber material), high-damping vibration-damping rubber support, top steel Plates and supporting bottom steel plates shall be integrally vulcanized to form one body, and the telescopic grooves shall be wave-staggered.

6.4.4 Assembly tolerances of the telescopic device. When the telescopic device is fully compressed, the same section is at any position, and the top plane of the longitudinal steel beams on both sides is taken as the plane the relative height difference between the top surface of the corrugated rubber sheet and the side longitudinal steel beam should be within ± 1. 5mm range; longitudinal deviation of each standard segment should be within ± 2mm range Within the range, the deviation of the total width of the plane should be within ± 5mm.

6.4.5 The welding seam of the weldment shall meet the design requirements, and the welding technology shall meet GB/T 985. 1 and the provisions of JB/T 5943.

6.4.6 The coating of steel members shall comply with the provisions of JT/T 722.

7 Test method

7.1 General requirements

7.1.1 Sample

7.1.1.1 The test equipment should test the telescopic device after the whole assembly. If restricted by test equipment, when the test is difficult, at least two standard segments assembled samples should be taken for testing.

7.1.1.2 During the test, the anchoring system on both sides of the telescopic device or the specimen shall be fixed to the test plane with anchor bolts or other effective methods.

On stage.

7.1.2 Maximum horizontal friction during stretching and compression

7.1.2.1 Using a force sensor in conjunction with a hydraulic jack, in the initial state of no expansion and contraction of the telescopic device, the longitudinal steel is moved along the driving direction to the side.

The beam is uniformly applied to a maximum elongation of 80% of the standard elongation. After the load is held for 5 minutes, the force sensor value is read, and the test is repeated 3 times to obtain a flat the average value is taken as the maximum horizontal friction resistance during stretching.

7.1.2.2 Using a force sensor with a hydraulic jack, the telescopic device is evenly applied in the driving direction when the telescopic device is in the initial state without telescopicity.

Force the side longitudinal steel beam to a maximum compression of 80% of the standard compression. After holding the load for 5 minutes, read the force sensor value, repeat the test 3 times, and take the average value is taken as the maximum horizontal friction during compression.

7.1.3 Uniformity of displacement

7.1.3.1 The displacement uniformity test shall be performed in the initial state of no expansion and contraction of the telescopic device.

7.1.3.2 Mark the two ends of the telescopic device and the middle position. Use a hydraulic jack to stretch the telescopic device back and forth and compress it to the maximum extension.

The length and compression are 80% of the standard elongation and compression. After holding for 5 minutes, measure the total width of each section and each seam at the mark of the telescopic device.

Gap width displacement value, repeat the test 3 times, and take the average of the measurement results.

7.1.4 Displacement along the bridge

7.1.4.1 The forward displacement test shall be tested in the initial state of no expansion and contraction of the telescopic device.

7.1.4.2 Use hydraulic jack to apply force evenly in the direction of bridge driving at both ends of the telescopic device sample, and stretch outward to the maximum allowable elongation.

After holding the load for 5 min, measure the corresponding displacement, repeat the test three times, and take the average value as the elongation in the direction of the bridge.

7.1.4.3 Use hydraulic jack to apply force evenly along the bridge driving direction at both ends of the telescopic device sample and compress inward to the maximum allowable compression After the load was held for 5 min, the corresponding displacement was measured, and the test was repeated 3 times, and the average value was taken as the compression amount in the forward direction of the bridge.

7.1.5 Transverse bridge displacement

7.1.5.1 The transverse bridge displacement test shall be performed when the telescopic device is at the maximum compression.

JT/T 1269-2019

7. 1. 5. (2) Use hydraulic jacks to uniformly apply force along the length of the expansion joint to the allowable displacement and hold the load on the side steel beam on the side of the expansion device.

After 5 min, measure the horizontal bridge displacement value, repeat the test 3 times, and take the average of the measurement results.

7.1.6 vertical and horizontal corners

7.1.6.1 The vertical and horizontal corner tests shall be performed with the telescopic device at the maximum compression.

7.1.6.2 Use hydraulic jacks to uniformly apply force to the allowable corners of the vertical steel beams on one side of the telescopic device in the vertical direction to hold the load.

After 5 min, measure the vertical height, repeat the test 3 times, and take the average of the measurement results.

7.1.6.3 Use an oil pressure jack to uniformly apply force to one end of the side longitudinal steel beam on one side of the telescopic device in the horizontal direction and stretch outward to the allowable After holding the load at the corner for 5 min, measure the horizontal width, repeat the test 3 times, and take the average of the measurement results.

7.1.7 Noise

The test method for the noise performance of the telescopic device shall be carried out in accordance with the requirements of Appendix B.

7.1.8 waterproof

For the telescopic device sample as the external sealing body, in the state of maximum tension, fill the sealing body with water and apply greater than 0. The compressive stress of 1 MPa was observed after 24 h.

7. 1. IX Anchor members on the test bench, for the telescopic device and concrete anchored connection body, the standard value of the gravity of the axis after the highway-Class I load is used. 5 times action After 2 million vibration shock fatigue tests, observe whether the anchor of the telescopic device has fallen off after unloading, and whether the sample has cracks and breakage.

7.1.10 high damping rubber support the test of mechanical properties of high-damping vibration-damping rubber bearings is in accordance with GB/T 20688. 1. The provisions of JT/T 842 and JT/T 928 shall be carried out.

7.2 Appearance

Appearance quality is inspected piece by piece using visual inspection and feel.

7.3 Materials

7.3.1 steel

The performance test of steel shall be carried out in accordance with the method specified in GB/T 1591. The performance test of cast steel should be in accordance with the provisions of GB/T 7659, GB/T 1134 Method.

7.3.2 Rubber

7.3.2.1 Rubber hardness test shall be carried out in accordance with GB/T 6031.

7.3.2.2 Rubber tensile strength and elongation at break tests shall be conducted in accordance with GB/T 528.

7.3.2.3 The rubber brittleness temperature test shall be conducted in accordance with the provisions of GB/T 1682.

7.3.2.4 Rubber compression permanent deformation test shall be in accordance with GB/T 7759. 1 provisions.

7.3.2.5 Rubber ozone resistance test shall be carried out in accordance with GB/T 7762.

7.3.2.6 Rubber abrasion resistance test shall be carried out in accordance with GB/T 1689.

7.3.2.7 The rate of change of the rubber hot air aging test shall be carried out in accordance with GB/T 3512 and GB/T 528.

7.3.2.8 The peel strength test of rubber, steel, and steel plates shall be conducted in accordance with GB/T 7760.

7.3.2.9 Rubber oil resistance and water resistance tests shall be performed in accordance with GB/T 1690.

JT/T 1269-2019

7.4 Craftsmanship

7.4.1 The dimensional deviation of the telescopic device should be measured with a calibrated steel ruler, vernier caliper, flatness meter, level gauge and so on.

After taking a cross-section measurement, take the average value.

7.4.2 The welding test shall be carried out in accordance with the method specified in GB/T 11345.

7.4.3 The coating test of steel members shall be carried out according to the method specified in JT/T 722.

8 Inspection rules

8.1 Inspection classification

8.1.1 Inspection is divided into type inspection and factory inspection. The inspection items are shown in Table 5.

Table 5 Type inspection and factory inspection items of telescopic device

Item Technical requirements Test method Type inspection Factory inspection

1 Maximum horizontal frictional resistance during stretching and compression 1. 1 7. 1. 2 +-

2 Uniformity of displacement 6. 1. 1 7. 1. 3 +-

3 Displacement along the bridge 6. 1. 1 7. 1. 4 +-

4 Transverse bridge displacement 6. 1. 1 7. 1. 5 +-

5 Vertical and horizontal corners 1. 1 7. 1. 6 +-

6 Noise 6. 1. 2 7. 1. 7 +-

7 Waterproof 6. 1. 3 7.7. 1. 8 +-

8 Anchor members 6. 1. 4 7. 1. 9 +-High damping rubber bearing 6. 1. 5 7. 1. 10 +-

10 Appearance 6. 2 7. 2 + +

11 Materials 6. 3 7.7. 3 + +

12 Welding 6. 4. 5 7. 4. 2 + +

13 Painting of steel members 6. 4. 6 7. 4. 3 + +

Note. "+" is checked, "-" is not checked.

8.1.2 Type inspection shall be carried out in any of the following cases.

a) When new products are trial-typed or old products are transferred to production;

b) when there are changes in product structure, materials, and processes that affect product performance;

c) when production is suspended for more than one year, when production resumes;

d) normal production for three consecutive years or when the cumulative length of a single variety exceeds 2000 m;

e) When a national quality supervision agency requests a type inspection.

8.2 Grouping, sampling and determination rules 8.2.1 batch the inspection group batch of the telescopic device may consist of one production batch. If the single contract volume is less than 500m, the single contract volume is used for production Batch; for a single contract volume greater than 500m, a production batch of 500m is used.

JT/T 1269-2019

8.2.2 Sampling

The type inspection should randomly select 2 samples, and the factory ins...