郭晓鹏,李俊奇,梁云,张海龙,王志平,王文海,闫霄雯

• 1:北京建筑大学城市雨水系统与水环境教育部重点实验室
• 2:北京未来城市设计高精尖创新中心
• 3:庄河市自然资源事务服务中心
• 4:庄河市海绵城市建设推进工作领导小组办公室

摘要(Abstract)：

在寒冷地区,透水砖铺装的冻胀损坏一直是影响其寿命的主要因素之一。通过冻胀损坏试验,研究陶瓷透水砖、水泥透水砖在冻结过程中外观变化和冻胀应力的变化规律,对其抗冻性能进行评价,最后结合试验数据提出相应的抗冻胀技术改进措施。研究表明:陶瓷透水砖的抗冻性能优于水泥透水砖。在水饱和度为完全饱和、有侧限条件下,陶瓷透水砖的最大冻胀应力为1.42 MPa,水泥透水砖的最大冻胀应力为1.67 MPa;在水饱和度为完全饱和、无侧限条件下,陶瓷透水砖的最大冻胀应力为0.21 MPa,水泥透水砖的最大冻胀应力为0.22 MPa。透水砖的抗冻防治措施应从提高砖体强度和耐久性、降低水饱和度、应力释放和加强透水砖铺装后期维护管理等几方面采取综合措施。在分析有侧限、无侧限试验条件下透水砖冻胀应力的大小差值较大的基础上,提出干砂灌缝或设置伸缩缝、基层或垫层增设导水管(板)、增设辅助设施等透水砖铺装抗冻胀技术改进措施。

关键词(KeyWords)： 透水砖;冻胀应力;抗冻胀;城市雨水管理;海绵城市;饱和度;低影响开发

Abstract:

Keywords:

基金项目(Foundation): 北京市自然科学基金重点项目(8191001);; 国家水体污染控制与治理科技重大专项(2018ZX07110-008)

作者(Author): 郭晓鹏,李俊奇,梁云,张海龙,王志平,王文海,闫霄雯

DOI: 10.13928/j.cnki.wrahe.2021.08.017

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