Production and Processing of Type 80 Expansion Joints for Highways, Type Z Expansion Joints, Type 60 and Type 120 Expansion Joints

The Type 160 expansion joint is a device suitable for small to medium-span bridges, primarily used to absorb deformations caused by temperature changes and load effects, ensuring smooth driving and bridge durability.

Product Features:

1. Structural Design:

   • Utilizes a combination of shaped steel (such as special-shaped steel or edge beams) and rubber sealing stripsProduction and Processing of Type 80 Expansion Joints for Highways, Type Z Expansion Joints, Type 60 and Type 120 Expansion Joints, offering excellent expansion and sealing properties.
   • The expansion range is typically 0-160mm, suitable for small to medium-span bridges (e.g., simply supported beam bridges, continuous beam bridges).

2. Material Characteristics:

   • Shaped Steel: High-strength weathering steel or Q235 steel, with surface anti-corrosion treatment (e.g., hot-dip galvanizing or spray coating).
   • Rubber Sealing Strips: Resistant to aging, high and low temperatures (-40℃ to +60℃), waterproof, and dustproof.

3. Applicable Conditions:

   • Suitable for highways, urban bridges, etc.Production and Processing of Type 80 Expansion Joints for Highways, Type Z Expansion Joints, Type 60 and Type 120 Expansion Joints, with design load levels of Highway-I or Highway-II.
   • Wide environmental temperature range, adaptable to various climatic regions.

4. Advantages:

   • Easy installation and low maintenance costs.
   • Smooth driving with minimal noise.
   • Strong durability, with a service life of over 10 years (depending on the specific usage environment).

Installation Steps for Type 160 Expansion Joints

1. Pre-Installation Preparation

• Check the Groove: Clean debris and laitance from the reserved groove in the bridge, ensuring the groove dimensions match the design (typically width ≥300mm, depth ≥150mm).
• Verify the Model: Confirm that the expansion joint model (Type 160) matches the bridge design and check product integrity (shaped steel, rubber strips, anchor components, etc.).

2. Positioning and Installation

• Layout and Positioning: Mark the centerline of the expansion joint according to the design drawings, aligning the device with the bridge axis.
• Temporary Fixation: Secure the expansion joint using positioning rebar or clamps, ensuring the top surface of the shaped steel is flush with the bridge deck pavement layer (allowable deviation ±1mm).

3. Welding and Anchoring

• Weld Anchor Bars: Weld the anchor bars of the expansion joint to the embedded rebar (double-sided welding, weld length ≥5d), ensuring firmness.
• Anti-Corrosion Treatment: Apply anti-rust paint to the welds after welding.