摘要
为了准确判别地下室外墙渗漏风险,采用敏感性分析方法对易渗漏部位以及地下水渗流规律进行分析,并提出了渗漏风险判别方法以及部分定量预防措施。首先对已有研究进行归纳,并根据工程案例实测数据,采用帕累托分析法对渗漏影响因素进行排序以确定主要影响因素;然后根据分层复合材料渗流理论推导地下水在地下室外墙中的分层渗流规律,从材料组成和密实度两方面判别地下室的渗漏风险;最后根据敏感性分析结果从多维度提出风险预防措施。研究表明:基于数据统计的帕累托分析法可以确定易漏部位及风险排序,从而采取针对性的设计、施工和监管措施;基于分层渗流规律计算的判别方法可以明确渗漏风险主控因素,如调整外墙厚度、采取更高抗渗等级的混凝土、在敏感性部位增加表层砂浆等。该方法可以为地下室外墙渗漏预防措施给出部分定量分析结论。
In order to accurately identify the leakage risks of basement exterior wall, the sensitivity analysis method was used to study the vulnerable parts and the groundwater seepage law, and the identification methods of leakage risks as well as some quantitative preventive measures were put forward based on the research results. Firstly, the existing research was summarized, and the leakage influencing factors were ranked using the Pareto Analysis based on the actual measurement data of the engineering case, so as to determine the main influencing factors. Then, the layered seepage law of underground water in the basement exterior wall was inferred according to the theory of layered composite material seepage theory, and the leakage risks of the basement were identified from two aspects of the material composition and compactness. Finally, risk prevention measures were proposed from multiple dimensions based on the sensitivity analysis results. The results show that the Pareto Analysis based on data statistics can determine the vulnerable parts and risk ranking, so as to adopt targeted design, construction and supervision measures;the identification method based on the calculation of the layered seepage law can clarify the main controlling factors of leakage risks, such as adjusting the thickness of the exterior wall, adopting concrete with a higher impermeability level, adding surface mortar in sensitive parts, etc. The proposed methods can provide some quantitative analysis conclusions for the preventive measures of basement exterior wall leakage.
作者
程小春
傅军
徐煜佳
李洁
叶文韬
CHENG Xiaochun;FU Jun;XU Yujia;LI Jie;YE Wentao(School of Construction Engineering,Zhejiang Guangsha Vocational and Technical University of Construction,Dongyang 322106,China;School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《浙江理工大学学报（自然科学版）》
2022年第3期452-457,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省基础公益研究计划项目(LGF18E080016)
浙江省教育厅科研项目(Y202147759)。
关键词
地下室外墙渗漏
敏感性分析
帕累托分析法
分层渗流规律
预防措施
basement exterior wall leakage
sensitivity analysis
Pareto Analysis
layered seepage law
preventive measures
