典型文献
Model-scale tests to examine water pressures acting on potentially buoyant underground structures in clay strata
文献摘要：
Throughout the service life,underground structures are subjected to transient and sustained hydrostatic pressures.The reservoir impoundment results in an increase in water level,as well as hydraulic gradient,which can endanger the uplift performance of infrastructure.In uplift design,a reduction factor is often suggested for buoyant force acting on underground structures in clays due to the time lag effect.However,the mechanism of pore pressure generation in clays is not fully understood.This investigation presents a novel U-shaped test chamber to assess the pore pressure generation with time in the hori-zontal branch subjected to an increase in reservoir level in the left vertical branch.A mathematical model is developed to explain the time lag effect of pore pressure generation.The test program also involves the evaluation of uplift pressure acting on foundation model in the right vertical branch due to adjacent reservoir impoundment.It is found that the time lag effect of pore pressure generation in clays can be observed irrespective of hydraulic gradient,but a higher hydraulic gradient can lead to a faster response in pore pressure sensors.A reduction factor of 0.84-0.87 should be considered to reduce the conser-vatism of uplift design.
文献关键词：
中图分类号：
作者姓名：
Zhisheng Ren;Qixian Lu;Kaiwen Liu;Pengpeng Ni;Guoxiong Mei
作者机构：
Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,College of Civil Engineering and Architecture,Guangxi University,Nanning,530004,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,430072,China;Key Laboratory of High-speed Railway Engineering(MOE),School of Civil Engineering,Southwest Jiaotong University,Chengdu,610031,China;School of Civil Engineering,Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Guangdong Key Laboratory of Oceanic Civil Engineering,Guangdong Research Center for Underground Space Exploitation Technology,Sun Yat-sen University,Guangzhou,510275,China
文献出处：
引用格式：
[1]Zhisheng Ren;Qixian Lu;Kaiwen Liu;Pengpeng Ni;Guoxiong Mei-.Model-scale tests to examine water pressures acting on potentially buoyant underground structures in clay strata)[J].岩石力学与岩土工程学报（英文版）,2022(03):861-872
A类：
vatism
B类：
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AB值：
0.495686
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