Core Viewpoint - The successful development of the "Wind-Rain-Heat-Snow Joint Simulation Test System" by Harbin Institute of Technology marks a significant advancement in China's ice and snow engineering research, entering a new era of comprehensive factor coupling [1] Group 1: System Features - The test system integrates five major functional modules, including a low-temperature wind tunnel that can replicate a -20°C wind field [1] - An intelligent snowfall module controls the morphology of snow crystals, while a dual-mode rainfall system finely adjusts raindrop spectra [1] - A solar radiation array simulates sunlight at different latitudes, and a monitoring center tracks the phase change of snow in real-time [1] Group 2: Research Implications - The system creatively addresses the simulation research of snow accumulation changes on roofs under multi-factor conditions of wind, rain, heat, and snow [1] - It maximally restores the periodic changes of snow accumulation, drifting, melting, crystallization, and re-accumulation on large roofs, providing real data for snow load research [1] Group 3: Applications and Support - Since passing acceptance, the system has provided technical support for accurately determining snow loads on roofs for several national major construction projects [1] - It also supports the national polar strategy by offering essential technical backing [1]

Core Insights - The successful development of the "Large-span Space Structure Wind-Rain-Heat-Snow Comprehensive Simulation Test System" marks a significant advancement in China's ice and snow engineering research, entering a new era of comprehensive factor coupling [1][2] Group 1: Research and Development - The new system provides the world's first experimental platform to reveal the evolution mechanism of snow accumulation on roofs under the coupling effects of wind, rain, heat, and snow [1] - The system is designed to simulate extreme weather conditions, allowing for real-time monitoring and testing of snow load on large-span structures [2] Group 2: Technological Features - The system compresses the time and space scales of natural climate, enabling the simulation of the entire snow accumulation and melting process on building roofs [2] - It integrates multiple subsystems to recreate the periodic changes of snow accumulation, drifting, melting, crystallization, and re-accumulation, providing accurate data for snow load research on large roofs [2]