LIUZHOU ZHUOQIAO
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Feb 01,2026
Key Issues to Focus on During the Construction of Prestressed Anchorage
A prestressed anchor is a type of anchorage device suitable for various engineering construction processes. It is used for prestressed tensioning in concrete and is commonly employed in bridge construction. During use, it should be positioned in advance, followed by concrete pouring, and embedded at both ends of the concrete. In the construction of prestressed anchors, the following nine issues should be noted:
Dec 10,2019
Recently, a new-generation bridge prestressed structure health monitoring system, developed by a smart technology company, completed its upgraded deployment on the Hangzhou Bay Bridge. This system integrates cutting-edge technologies such as fiber optic sensing, big data analytics, and artificial intelligence, enabling intelligent full-lifecycle maintenance and operation for bridge prestressed structures and significantly enhancing the safety assurance capabilities of bridges. As a critical transportation hub in China, the Hangzhou Bay Bridge is influenced by various factors including sea winds, tides, and vehicle loads, making the health status of its prestressed structures directly impact the operational safety of the bridge.
Feb 03,2026
Discussion on the Sequence and Construction Key Points of Prestressed Tensioning
Industry experts point out that the sequence of prestressed tensioning is not fixed; it must be determined comprehensively based on factors such as bridge structure type, load-bearing characteristics, construction techniques, and operational safety. The core principle is to adhere to the basic guidelines of "uniformity, symmetry, and gradual progression," avoiding hidden risks such as structural torsion, lateral bending, or local overstress caused by unbalanced tensioning. According to the requirements of the *Code for Construction of Concrete Structures (GB50666-2011)*, different structural forms of bridges have clear specifications for tensioning sequences.
Dec 10,2019
Recently, a new type of unbonded prestressed steel strand, jointly developed by a technology company and a university, officially passed testing by a national authoritative institution. The product's performance indicators surpass current national standards, achieving significant breakthroughs in corrosion resistance, fatigue resistance, and environmental performance. This provides new material support for the green and low-carbon construction of bridge engineering. The product has already been successfully applied in a river-crossing bridge project in the Pearl River Delta region, with expectations to extend the service life of the bridge's prestressed structures by over 15 years and reduce lifecycle maintenance costs by 30%.
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