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Feb 09,2026
Application and Practice of Prestressed Tensioning and Grouting Technology in Bridge Engineering
In modern bridge engineering construction, prestressed tensioning technology has become an essential construction method. By applying external loads, prestressed tensioning introduces specific stresses in steel reinforcement or steel cables, thereby enhancing the structural load-bearing capacity and resistance to deformation. However, during the prestressed tensioning process, grouting is required to protect the prestressing tendons from corrosion and prestress loss. This article focuses on the role, construction methods, and key considerations of cement mortar grouting in prestressed tensioning and grouting.
Feb 09,2026
As China’s transportation infrastructure construction advances toward long-span, high-quality, and long-lasting development, prestressed technology has become a core method for optimizing bridge structures and enhancing engineering efficiency. It is now widely applied in various bridge designs and constructions, from urban interchanges and cross-sea bridges to conventional highway bridges and high-grade railway bridges. The continuous innovation and upgrading of this technology are injecting strong momentum into China’s bridge engineering industry, driving a leap in bridge design characterized by safety, efficiency, economy, and environmental sustainability.
Feb 09,2026
Differences and Applications of Pre-tensioned Prestressing and Post-tensioned Prestressing
In construction engineering, prestressing technology is an important structural strengthening and optimization method. It improves the mechanical performance of components under service conditions by introducing stress in advance. Prestressing technology is mainly divided into two types: pre-tensioned prestressing and post-tensioned prestressing. These two methods differ in principles, construction techniques, and application scenarios. This article provides a detailed explanation of the differences and respective applications of pre-tensioned and post-tensioned prestressing.
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:
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.
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