超低能耗建筑密封胶抗剪力学性能试验和计算模型研究

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中图分类号：TU57文献标识码：A

Study on Shear Mechanical Properties and Calculation Model of Sealing Adhesives for Ultra-low Energy Consumption Buildings

YANG Shixuan1，WANG Tianlong²*，WANG Xiaolei³

（1.CSTID Beijing Kangju Certification Center，Beijing 1O0835，China；2.CSCEC City Construction

Development Co.，Ltd.，Beijing 1OO037，China；3.School of Civil Engineering，Hebei University of Engineering，Handan，Hebei O56038，China）

Abstract： In order to study the shear mechanical properties of ultra-low energy building sealants，a monotonic loading test was conducted using a single-axis testing machine on the sealant layer.The influence laws of the thickness，width of the sealant layer and the elastic modulus of the sealant on the shear performance of the sealant were analyzed，and a shear stress calculation model at the sealant layer was established. The results showed that the failure types of the specimens mainly included the failure of the bonding interface and the shear failure of the sealant layer.Under the same strain conditions，the shear stress of the sealant was negatively correlated with the thickness of the sealant layer and positively correlated with the width of the sealant layer. An internal force calculation model applicable to the sealing glue between joints of ultra-low energy buildings，which is mainly shear-driven and the normal stress can be ignored，was proposed. The calculated values were basically consistent with the experimental values.

Key words： ultra-low energy consumption building； sealant ； mechanical properties ; calculation model

随着全球能源危机的日益严峻和环境保护意识的不断提高，超低能耗建筑作为节能减排的重要途径，正逐渐成为建筑行业发展的重要趋势[1]良好的建筑气密性是实现近零能耗建筑目标的重要条件之一[2]。（剩余5365字）