In the fields of architecture and engineering, seismic support systems play a crucial role. Not only do they serve as a key line of defense for ensuring structural safety and withstanding seismic disasters, but as technology advances, they are increasingly integrating with new energy sources, new materials, and other technologies, demonstrating broad application prospects. From simple support components in the early days to today’s comprehensive engineering solutions integrated with intelligent monitoring capabilities, the evolution of seismic support technology is a history of innovation that has progressed from the fundamentals to the cutting edge. This article will focus on seismic supports themselves and extend to photovoltaic mounting systems and their core connecting components—fasteners—which share common technological origins and intertwined requirements, to explore the evolutionary trajectory of this technological system.
The origins of seismic support brackets can be traced back to people’s fundamental pursuit of building safety. In the early days, their design philosophy was relatively simple, primarily relying on rigid supports and diagonal braces to enhance structural integrity, with materials predominantly consisting of traditional steel. Although these basic components improved a building’s seismic resistance to some extent, their calculations were crude, their forms were monotonous, and they often depended on engineers’ experience. At that time, fasteners were mostly standard bolts and nuts, and their anti-loosening and seismic performance had not been specifically optimized. This phase can be viewed as the “foundational period” of technological accumulation, laying the practical groundwork for subsequent development.
With the advancement of structural dynamics theory and the application of computer simulation technology, seismic support technology entered a period of rapid development known as the “standardization phase.” Engineers began to analyze the transmission paths of seismic forces within buildings with greater precision, and the design of seismic bracing shifted from “empiricism” to “performance-based design.” Bracing is no longer merely a passive component that bears forces; instead, through specific designs—such as buckling-restrained bracing and viscous dampers—it dissipates seismic energy and actively protects the main structure. At the same time, breakthroughs in fastener technology have emerged, including high-strength bolts, chemical anchors with locking and anti-loosening functions, and mechanical anchors, ensuring the reliability of connection joints under repeated seismic loads. These developments have transformed seismic support systems into a truly scientific and standardized engineering discipline.
Entering the 21st century, global demand for clean energy fueled explosive growth in the photovoltaic industry, unexpectedly opening up a new frontier for mounting technology. Photovoltaic mounting systems—especially those for arrays installed in complex environments such as rooftops and mountainous terrain—place extremely high demands on stability, weather resistance, and wind and seismic resilience. The expertise in mechanical analysis, material corrosion protection, and dynamic load design accumulated in the seismic support field has been directly transferred and innovatively applied to photovoltaic mounting systems. For example, lightweight, prefabricated mounting solutions for distributed PV systems, as well as tracking systems capable of adapting to varying terrains and automatically adjusting angles, all demonstrate the comprehensive nature of these engineering solutions. Fasteners have also been upgraded, with increased use of stainless steel and aluminum alloy materials, and a focus on anti-electrochemical corrosion design to meet the decades-long service life requirements of photovoltaic systems.
Currently, seismic and photovoltaic mounting technologies are advancing together toward the frontier of “intelligence and integration.” IoT sensors are embedded in critical parts of the mounting systems to monitor stress, deformation, and vibration data in real time, enabling online health diagnostics and early warnings. Algorithms based on big data and artificial intelligence can predict system behavior under extreme weather or seismic conditions and make adaptive adjustments in advance. Cutting-edge advancements in materials science, such as shape-memory alloys and high-performance composites, are also being explored for the manufacture of lighter, stronger, and self-healing mounting components. Fasteners are evolving toward intelligent connections; for example, bolts with built-in stress-sensing chips can directly indicate whether preload requirements are met or if loosening has occurred. This convergence of technologies marks the evolution of support systems from a single-function support role to intelligent infrastructure nodes that integrate safety assurance, energy harvesting, and data sensing.
From basic reinforcement to intelligent integration, the evolution of seismic support technology clearly reflects the trajectory of engineering discipline development. It began with a commitment to safety, flourished through theoretical calculations and material innovations, and ultimately expanded into new dimensions of intelligence and sustainability at the intersection with emerging industries such as photovoltaics. As seemingly small yet crucial “joints,” technological advancements in fasteners are equally the cornerstone of the entire system’s reliability. Looking ahead, as the “dual carbon” goals advance and urban resilience improves, integrated engineering solutions will inevitably integrate structural safety and green energy more deeply. The continuously evolving bracket technology will undoubtedly be one of the core forces supporting this future blueprint.
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