悬挂式止水帷幕矩形基坑涌水量简化计算方法  

Simplified calculation method of water inflow in rectangular foundation pit with suspended waterproof curtain

作　　者：张姝伊 吕乐 尤苏南 王旭东[1] ZHANG Shuyi;LV le;YOU Su'nan;WANG Xudong(Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China;Chemical Industry Geotechnical Engineering Co.Ltd.,Nanjing 210031,China)

机构地区：[1]南京工业大学岩土工程研究所,江苏南京210009 [2]化学工业岩土工程有限公司,江苏南京210031

出　　处：《南京工业大学学报（自然科学版）》2023年第3期293-299,共7页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金(41272303)。

摘　　要：悬挂式止水帷幕矩形基坑的地下水流动复杂,基坑涌水量计算成为工程设计的难题,无论在计算方法的合理性还是计算结果的准确性方面都难以满足工程实践的要求。为此,在明确悬挂式止水帷幕条形基坑涌水量近似计算公式准确性和适用性的基础上,提出基于条形基坑单宽涌水量近似计算公式的矩形基坑涌水量简化计算方法,利用修正系数(ξ)考虑基坑形状、止水帷幕插入深度、基坑降水影响范围对矩形基坑涌水量的影响,通过工程实例验证简化计算方法的适用性和工程实践的合理性,为悬挂式止水帷幕矩形基坑涌水量的合理计算提供新的途径。The groundwater flow in rectangular foundation pit with suspended waterproof curtain is complex.The calculation of water inflow in foundation pit become a difficult problem in engineering design.It is difficult to meet the requirements of engineering practice in terms of rationality of calculation method and accuracy of calculation results.Therefore,on the basis of accuracy and applicability of approximate calculation formula of water inflow in foundation pit with suspended waterproof curtain,a simplified calculation method of water inflow in rectangular foundation pit based on approximate formula of single width water inflow in strip foundation pit was proposed.The effects of the shape of foundation pit,curtain length and the influence scope on water inflow in rectangular foundation pit was considered by using the correction factor(ξ).The applicability of the simplified calculation method and the rationality of engineering practice were verified by an engineering example.A new way for reasonable calculation of water inflow in rectangular foundation pit with suspended waterproof curtain was provided.

关 键 词：悬挂式止水帷幕 矩形基坑 承压含水层 涌水量 简化计算 

分 类 号：TU463[建筑科学—结构工程]