Modular D160 Type Expansion Joint for Bridges - Modular Expansion Joint Production + Construction Consultation Contact Me

Type 160 Expansion Joint Product Introduction

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

Product Features:

1. Structural Design:

   • Utilizes a combined structure of shaped steel (such as special-shaped steel or edge beams) and rubber sealing strips, offering excellent expansion/contraction capability and sealing performance.
   • The expansion range is typically 0-160mm, Modular D160 Type Expansion Joint for Bridges - Modular Expansion Joint Production + Construction Consultation Contact Me suitable for small to medium-span bridges (e.g., simply supported beam bridges, continuous beam bridges, etc.).

2. Material Properties:

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

3. Applicable Conditions:

   • Suitable for highways, urban bridges, etc., with design load ratings of Highway-I or II.
   • Wide environmental temperature range, Modular D160 Type Expansion Joint for Bridges - Modular Expansion Joint Production + Construction Consultation Contact Me adaptable to various climatic regions.

4. Advantages:

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

Type 160 Expansion Joint Installation Steps

1. Pre-construction Preparation

• Check the Groove: Clean debris and laitance from the reserved bridge groove, ensuring the groove dimensions match the design (typically width ≥300mm, depth ≥150mm).
• Verify Model: Confirm that the expansion joint model (Type 160) matches the bridge design and check product completeness (shaped steel, rubber strips, anchoring 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 with 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 expansion joint's anchor bars to the embedded rebar Modular D160 Type Expansion Joint for Bridges - Modular Expansion Joint Production + Construction Consultation Contact Me (double-sided welding, weld length ≥5d), ensuring firmness.
• Anti-corrosion Treatment: Apply anti-rust paint to the welds after welding.

4. Concrete Pouring

• Formwork Setup: Install templates on both sides of the groove to prevent concrete spillage.
• Pour C50 Steel Fiber Concrete: Compact thoroughly to ensure no voids under the shaped steel.
• Curing: Cover with wet cloth or film after pouring, cure for ≥7 days (traffic can resume after reaching 80% strength).

5. Install Rubber Strip

• After the concrete hardens, embed the rubber sealing strip into the shaped steel groove, ensuring no twisting or detachment.