【摘 要】
：
静止侧压力系数K0是进行地下结构设计时必不可少的参数,准确确定K0系数具有重要的工程意义.依托上海深隧工程,采用三轴仪开展K0固结试验,研究不同加、卸载路径下土体K0系数的
【机 构】
：
上海市政工程设计研究总院(集团)有限公司,上海市200092
论文部分内容阅读
静止侧压力系数K0是进行地下结构设计时必不可少的参数,准确确定K0系数具有重要的工程意义.依托上海深隧工程,采用三轴仪开展K0固结试验,研究不同加、卸载路径下土体K0系数的变化规律,分析了几种常见的静止侧压力系数确定方法的适用性,并根据试验结果得到了新的预测公式.结果 表明:(1)深部黏性土的K0值在0.30～0.45之间,且与土层的先期固结压力成正比;(2)在取土引起的应力释放到再加载的过程中,部分试样的K0值先减小至低于正常固结值,再增大并逐渐稳定;(3)采用经验公式估算K0值时,土体内摩擦角宜采用正常固结时的有效峰值内摩擦角.
其他文献
Investigation about the corrosion behavior of Ti alloys in different ambient environment is of great significance for their practical application.Herein,we syst
Intermetallic compounds have the characteristics of long-range ordered structure and combination of metallic and covalent bonds,showing intrinsic brittleness an
The so-called bimodal microstructure of Ti-6Al-4V alloy,composed of primary α grains (αp) and transformed β areas (βtrans),can be regarded as a “dual-phase
ZL205A alloys tend to form disordered and defective microstructure due to the large solidification intervals and multi-phase.Accordingly,finding ways to effecti
吸附储热是一种有着较高储热密度和较低热损失的储热方式.沸石-液态水吸附储热系统以沸石颗粒作为储热介质,具有系统简单、换热性能好和储热密度大等优点.利用Fluent建立了反
Nowadays,the employing of molecular imprinting technique in the analysis and separation of proteins from complex biological samples has been widely favored by r
1Cr15Ni36W3Ti was thermally exposed at 580 ℃ and 680 ℃,respectively,up to 3000 h.The γ'phase and intergranular TiC carbides continuously coarsened during ex
Zinc (Zn) and its biocompatible and biodegradable alloys have substantial potential for use in orthopedic implants.Nevertheless,pure Zn with a hexagonal close-p
现代科技水平不断提高,云计算技术融入到了社会领域的各个行业中,给人们的工作、生活带来了新的改变,云计算环境下的数据安全与隐私问题也同时显现了出来,对于个人信息以及数
采用常规顶升工艺更换桥梁支座需在交通封闭或临时限载的情况下进行,但随着社会发展,交通压力越来越大,许多城市快速路不允许通过交通封闭或限流来更换桥梁支座.针对该难点,