基于生命周期评估的高烈度区高层剪力墙隔震结构碳排放计算分析
1. 赤峰市防灾救灾中心, 内蒙古赤峰 024005
2. 中国地震局, 工程力学研究所工程抗震研究中心, 黑龙江哈尔滨 150010
3. 同济大学, 土木工程学院, 上海 200092
| 摘 要： | 建筑业碳排放高，为实现中国碳减排目标，需加强碳减排措施。隔震技术是降低碳排放的利器，在建筑设计中应加入碳排放分析。中国隔震建筑设计注重安全和经济因素，然而，隔震建筑往往忽略碳排放量计算。本文选择中国烈度区（9度0.4g）高层剪力墙结构作为研究对象并对其进行隔震设计。同时基于生命周期评估（LCA）理论计算了隔震结构和非隔震结构的碳排放量。结果表明：采用隔震方案后结构的自振周期延长了1.52倍，隔震结构的减震系数为0.44，在罕遇地震作用下隔震支座的位移、压应力和拉应力均满足《建筑抗震设计规范》（GB50011-2016）要求。基于LCA理论，采用隔震方案后中国9度区高层剪力墙结构在全生命周期阶段总碳排放量可减少约2.8%；建材生产及运输阶段碳排放量减少10.19%；施工建造和拆除处理碳排放量分别减少51.76%和40.72%。该研究为中国隔震建筑设计的碳排放量计算提供了有价值的参考。 |
| 关 键 词： | 高烈度区; 高层剪力墙结构; 隔震设计; 生命周期评估（LCA）; 碳排放量 |
| DOI： | 10.57237/j.cear.2024.02.003 |
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收稿日期: 2024-05-13
接受日期: 2024-06-19
在线出版日期: 2024-06-24
Carbon Emission Calculation and Analysis of High-Rise Shear Wall Isolation Structure in High Seismic Region Based on Life Cycle Assessment
1. Chifeng Disaster Prevention and Relief Center, Chifeng 024005, China
2. Engineering Seismic Research Center, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150010, China
3. College of Civil Engineering, Tongji University, Shanghai 200092, China
| Abstract: | The carbon emissions of the construction industry are high. In order to achieve China's carbon emission reduction goals, it is necessary to strengthen carbon emission reduction measures. Seismic isolation technology is a powerful tool to reduce carbon emissions, and carbon emission analysis should be added to the architectural design. Chinese seismic isolation building designs focus on safety and economic factors; however, carbon emissions calculations are often overlooked in seismic isolation buildings. This article selects the high-rise shear wall structure in China's intensity zone (9 degrees 0.4g) as the research object and conducts seismic isolation design on it. At the same time, based on the Life Cycle Assessment (LCA) theory, the carbon emissions of seismic isolation structures and non-seismic isolation structures are calculated. The results show that after adopting the seismic isolation scheme, the natural vibration period of the structure is extended by 1.52 times, and the damping coefficient of the seismic isolation structure is 0.44. Under the rare earthquake action, the displacement, compressive stress and tensile stress of the seismic isolation bearing all meet the requirements of the "Code for Seismic Design of Buildings" (GB50011-2016). Based on the LCA theory, the total carbon emissions of the high-rise shear wall structure in the 9-degree area of China can be reduced by about 2.8% in the whole life cycle stage after adopting the seismic isolation scheme; the carbon emissions in the construction materials production and transportation stages are reduced by 10.19%; the carbon emissions of construction and demolition treatment are reduced by 51.76% and 40.72%, respectively. This study provides a valuable reference for calculating the carbon emissions of seismic isolation building designs in China. |
| Keywords: | High Seismic Region; High-rise Shear Wall; Isolation Seismic Design; Life Cycle Assessment; Carbon Emissions |
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