建筑材料导热性能对人体生理影响的研究

Influence of Thermal Conductivity of Building Materials on Human Physiology

为了解建筑材料导热性能对人体生理的影响,以三因素理论和心理生理学方法为指导,测试了人体在接触不同建材时自主神经系统和中枢神经系统的重要指标:心率变异系数、动态连续血压和脑波频率的变化,并根据材料的物性因子和受验者的主观评价进行了联合分析.结果显示:在与建筑材料的接触过程中,人体生理指标中的心电RR间期均值减小、血压上升、脑电α波受抑制、β波增强,说明此时人体交感神经活动取得优势,副交感神经活动则暂时被抑制又随后恢复,交感-副交感神经能保持均衡性,但长期接触金属和石材会有失衡危险;建筑材料的密度和导热性是导致上述人体生理指标变化程度的决定性影响因素.

Aim to discover the relations between thermal property of building materials and human physiology, Schachter＇s theory and psychophysiology were used to test heart rate variability of e lectrocardiogram（ECG）, dynamic continuous blood pressure（DCBP） and alpha, beta, theta waves of electroencephalogram（EEG）. And also a combined analysis on inner correlations among physical parameters of material, human physiological indexes and subjective rating was proceeded. The experimental results show that mean of RRinterval decreases, DCBP rises, alpha wave of EEG is depressed and beta wave is boost up, which reflects the predominant activity of sympathetic nervous, the temporary suppression and thence to reactivation activity of parasympathetic nervous during people in contact with materials. The equilibrium between sympathetic nervous and parasympathetic nervous system is still remained, but it has the risk of losing equilibrium when longtime in contact with metal and ceramic. Moreover, the density and coefficient of thermal conductivity are decisive effect factors on the physiological changing degree of human.