混凝土枣核形裂缝的渗透性等效宽度  

THE PERMEABILITY EQUIVALENT WIDTH OF THE DATE PIT FORM CRACK IN CONCRETE

作　　者：丁智[1,2] 王润炜 张苑竹 DING Zhi;WANG Runwei;ZHANG Yuanzhu(School of Civil Engineering,Zhejiang University,Hangzhou 310058,China;School of Civil Engineering,Zhejiang University City College,Hangzhou 310015,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]浙大城市学院工程学院,杭州310015

出　　处：《低温建筑技术》2021年第9期5-9,21,共6页Low Temperature Architecture Technology

基　　金：国家自然科学基金资助项目(51878609);浙江省自然科学基金资助项目(LY17E080004)。

摘　　要：裂缝宽度是影响混凝土抗渗性能的重要因素。为了研究裂缝宽度变化对混凝土渗透性的影响,采用TOUGH2软件进行建模分析,模拟了不同宽度变化的枣核形裂缝。根据孔隙水饱和度计算结果进行对比分析,提出了枣核形裂缝的等效宽度公式。该公式也可用于非等宽裂缝的等效宽度取值计算。最后通过试验,对该公式进行验证。The crack width are the important factors affecting the impermeability of concrete.In order to study the influence of crack width change on the permeability of concrete,the modeling analysis is conducted by using the TOUGH2 software,where the date pit form crack with the different width change is simulated.The comparison and analysis are conducted according to the pore water saturation calculation results,and the equivalent width formula of the date pit form crack has been proposed.The formula can also be used for the equivalent width value calculation of non-equal width cracks.Finally,the formula is verified through experiments results.

关 键 词：枣核形裂缝 非等宽裂缝 等效宽度 数值模拟 

分 类 号：TU528.1[建筑科学—建筑技术科学]