100-Ton 321 Bailey Bridge Municipal Construction Trestle

The 100-Ton 321 Bailey Bridge Municipal Construction Trestle is a deck-type prefabricated steel truss structure designed to support extreme concentrated loads in construction environments. This specialized trestle system addresses the need for stable crossings and work platforms that can accommodate heavy crawler cranes and other large construction equipment over gaps up to 9 meters.

100-Ton 321 Bailey Bridge Trestle Overview

This trestle utilizes the proven Type 321 modular steel truss system, configured in a deck-type arrangement to maximize load distribution. It serves as a semi-permanent solution for municipal construction, infrastructure development, and industrial projects where temporary heavy-load access is required. The system is manufactured to ASTM and GB standards using high-strength steel materials.

Key Engineering Features

10-Row Single-Layer Deck-Type Configuration

To achieve the 100-ton concentrated load rating, this trestle features ten parallel lines of Type 321 trusses positioned directly beneath the roadway deck. This high-density arrangement evenly distributes immense loads across all structural members, making it suitable for short-span, heavy-load applications that standard configurations cannot support.

Wide Unobstructed Work Surface

As a deck-type structure, the trestle provides an 8-meter-wide double-lane platform with no overhead obstructions. This design allows for simultaneous vehicle transit and construction activities, and also functions as a stable over-water work platform for extended periods.

Corrosion-Resistant Protective Coating

All steel components receive a high-performance anticorrosive paint finish. This coating protects against environmental elements and extends the service life of the structure during its use as a semi-permanent installation.

Technical Specifications

Municipal Construction Application Case

A 100-ton capacity trestle of this design was supplied to Suzhou Dabao Municipal Construction Engineering Co., Ltd. for a project requiring heavy crawler crane access over a 9-meter gap. The deck-type configuration provided the necessary load distribution to support the crane's concentrated weight, while the wide platform allowed for efficient material handling and equipment movement throughout the construction period.

Modular System Benefits for Construction Projects

The modular nature of the 321 Bailey Bridge system allows for rapid assembly using standard tools and equipment. Components are interchangeable and can be reused across multiple projects, reducing overall project costs. The system also offers configuration flexibility to adapt to different span lengths and load requirements.

FAQ

What load capacity does this 321 Bailey bridge trestle support?

This specific configuration supports a concentrated load of 100 tons, making it suitable for heavy crawler cranes and other large construction equipment.

What is the typical span length for this configuration?

The 10-row single-layer deck-type configuration is typically used for spans up to 9 meters. Longer spans can be achieved with different truss arrangements.

How long does it take to assemble this trestle bridge?

Assembly time varies based on crew size and site conditions, but modular components allow for significantly faster installation compared to cast-in-place structures.

Can this trestle be used as a permanent structure?

This system is designed for semi-permanent use as a construction trestle or work platform. Permanent installations require additional engineering evaluation and maintenance.

What materials are used in the construction of this Bailey bridge?

The trestle is constructed from Q355B to Q460C high-strength steel, manufactured in compliance with ASTM and GB standards.

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