有了方向，中建二局与中建西南院组成的联合团队立刻展开了深入探索，一套"三维降碳技术"由此诞 生。 这套技术如何做到"近零碳"？ （来源：千龙网） 拉萨，海拔3650米。 这里是离太阳最近的城市，也是抵御极寒缺氧的战场。1月23日，凛冽的寒风卷着雪粒，呼啸着穿过山 谷，气温骤降至零下10摄氏度。 但在四川大学华西第二医院西藏医院国家区域医疗中心项目的建设现场，却是一番热火朝天的景象—— 设备轰鸣，焊花飞溅，一座致力于守护高原妇女儿童健康的现代化医疗地标，正在这片土地上拔节生 长。 在极寒缺氧、昼夜温差大的高原建设医院，维持室内舒适温度往往意味着更高的能耗。而面对生态脆弱 的高原环境，降低碳排放又刻不容缓。如何平衡温暖与低碳，曾是项目团队面临的难题。 "外面零下十几度，不供暖病人受不了；大力供暖，碳排放又容易超标。"中建二局项目经理刘秘道出了 建设中的两难处境。 经过多次研讨，团队梳理出三大挑战：极寒条件下建筑热量流失快，保温与采光难以兼顾；医院需持续 通风换气，导致热能回收效率低；能源供给方式单一，必须结合高原特有的自然资源破局。 "既然是'日光城'，何不向太阳索取热量？"参建方中建西南院项目负责人李刚的一句话 ...

Core Viewpoint - The Greater Bay Area Science Hall, a landmark for scientific exchange, has officially opened, showcasing international standards in Guangzhou's Nansha district [1][3]. Group 1: Project Overview - The Greater Bay Area Science Hall covers an area of approximately 92,600 square meters and integrates an academic center, science museum, and supporting functions [1][3]. - The design concept "Sailing with a Thousand Sails, Technology at Sea" features the largest wave-shaped continuous welded stainless steel roof in the country, with dimensions of 170 meters in length and 150 meters in width, and a maximum height difference of 21 meters [3][4]. Group 2: Construction and Materials - The project utilized 7,000 tons of steel, with the roof's maximum span reaching 75 meters, divided into 38 triangular grid units to create a fluid wave-like structure [3][4]. - Advanced construction techniques, including 3D laser scanning and intelligent welding robots, were employed to ensure precision in the welding seams, maintaining accuracy within millimeters over a total length exceeding 40,000 meters [3][4]. Group 3: Sustainability and Technology - The building aims to be a "near-zero carbon building," utilizing fluorocarbon-coated aluminum panels and anodized aluminum plates that are resistant to corrosion and require minimal maintenance [4][5]. - The installation of 1,200 square meters of photovoltaic glass on the roof is expected to generate 96,000 kilowatt-hours annually, fulfilling the indoor lighting needs [4][5]. - The cooling system in the underground machine room employs a high-efficiency technology developed by China Railway Construction, improving the energy efficiency ratio from 6.15 to nearly zero carbon standard of 6.8, achieving an overall energy-saving rate exceeding 50% [4][5]. Group 4: Future Implications - The Greater Bay Area Science Hall is positioned as a crucial platform for deepening cooperation in the Guangdong-Hong Kong-Macau Greater Bay Area and is expected to enhance regional collaborative innovation and support the development of an open and integrated technological ecosystem [5].

Core Insights - The upcoming 15th National Games is approaching, with a focus on the green construction capabilities showcased by the Longhua Sports Center and the Jian Shang Sports Complex in Longhua District [1][3] Group 1: Longhua Sports Center - The Longhua Sports Center is the largest sports venue in Longhua District and has received a "three-star green building design label," the highest level for green construction in China [1] - The venue features a natural lighting system with large windows and terraces, maximizing the use of natural light indoors [1] - A distributed photovoltaic system combined with an energy storage station creates a self-sufficient energy loop, with 16.90% of construction materials being reusable or recyclable [1] Group 2: Jian Shang Sports Complex - The Jian Shang Sports Complex is the first vertically distributed large sports venue in the country, designed to address space limitations through vertical stacking [2] - The complex's exterior features a double-layer skin system that allows for natural light capture and air circulation, reducing material consumption and carbon emissions [2] - The design encourages public use of terraces, gardens, and open spaces, promoting a low-carbon lifestyle and integrating the building with the surrounding urban environment [2] Group 3: Overall Impact - Both venues exemplify near-zero carbon buildings that blend event excitement with community warmth, showcasing Shenzhen's ability to achieve ecological and developmental harmony in a high-density urban setting [3]