对混合土液塑限试验的讨论

土的液塑限试验是土工试验常见试验之一。含有一定数量粗粒组的混合土,用0.5 mm以下粒径范围的土作液塑限试验,得到的液塑限偏低,由此土的分类定名不符合实际。建议用0.075 mm以下粒径范围的土做液塑限试验。     

Active tuned liquid column damper with propellers

The active control of a Tuned Liquid Column Damper (TLCD) with two propellers is presented. A single‐degree‐of‐freedom system with a passive or active TLCD is used as an example to set up the basic equation of motion. The Optimal Control Theory is applied to establish the control law and to calculate the control force generated by these two propellers installed inside the TLCD. A simple pendulum‐like model test is carried out to study the dynamic characteristics of the passive and active TLCDs and the effectiveness of the vibrational control. Comparison of the experimental result with the analytical one shows a good agreement. Finally, the analytical results of the seismic response are also included as an example for demonstration and application. Copyright © 2003 John Wiley & Sons, Ltd.     

炉渣处理含磷废水的实验研究

以炉渣作为吸附剂，用静态吸附实验方法研究了炉渣对模拟含磷废水脱磷的一般规律，结果表明，炉渣是一种有效的吸附剂，对废水中的磷有较强的吸附去除性能。影响炉渣除磷的主要因素有吸附时间、炉渣用量、pH值和原水含磷浓度。在含磷浓度2～13mg／L、炉渣用量5g／L、中性、吸附时间为2h的实验条件下，磷的去除率可高达99％以上。     

高压液相色谱-电感耦合等离子体发射光谱联用技术在元素化学形态分析中的应用

介绍了高压液相色谱与等离子体光谱仪的联用技术及其应用于元素化学形态分析的现状、前景和存在问题。着重叙述了联用接口的作用和几种接口的结构性能。     

调液阻尼器液体动水压力的模拟

本文采用流体体积函数法（ＶｏｌｕｍｅｏｆＦｌｕｉｄＭｅｔｈｏｄ,简称ＶＯＦ法）直接求解不可压缩的,粘性的,瞬变和具有自由表面流体的Ｎａｉｅｒ－Ｓｔｏｋｅｓ方程（简称Ｎ－Ｓ方程）计算了矩形容器中液体晃动时动水压力,为便于工程应用,在计算结果发析的基础上,提出了模拟动水压力的经验公式。     

KLWC-5含水量仪原理及在人工增雨中的应用

简要介绍了热线含水量仪的研究进展，讨论了目前人工增雨试验中使用的机载KLWC含水量仪的工作原理、显示模块及其在微物理探测中的应用。这些飞机观测数据资料有助于加深人们对云物理结构的了解，从而提高人工增雨作业效率。     

Control Volume Method for the Thermal Convection Problem in a Rotating Spherical Shell: Test on the Benchmark Solution

The development of the control volume method for the thermal convection problem in a rotating spherical shell is presented. In contrast to the spectral methods, commonly used in geodynamo simulations, the control volume method belongs to the class of grid methods (the solution is approximated by a set of discrete values in physical space). In the present paper we concentrate on some problems of convergence and stability of the method. Case 0 of the numerical dynamo benchmark (Christensen et al., 2001, Phys. Earth Planet. Inter., 128, 25-34) was used to check the correctness of our computer code. The results demonstrate good convergence to the suggested standard solution.     

Seismic response of base-isolated liquid storage tanks considering fluid–structure–soil interaction in time domain

The seismic response analysis of a base-isolated liquid storage tank on a half-space was examined using a coupling method that combines the finite elements and boundary elements. The coupled dynamic system that considers the base isolation system and soil–structure interaction effect is formulated in time domain to evaluate accurately the seismic response of a liquid storage tank. Finite elements for a structure and boundary elements for liquid are coupled using equilibrium and compatibility conditions. The base isolation system is modeled using the biaxial hysteretic element. The homogeneous half-space is idealized using the simple spring-dashpot model with frequency-independent coefficients. Some numerical examples are presented to demonstrate accuracy and applicability of the developed method.Consequently, a general numerical algorithm that can analyze the dynamic response of base-isolated liquid storage tanks on homogeneous half-space is developed in three-dimensional coordinates and dynamic response analysis is performed in time domain.     

提高水泥土搅拌桩施工质量的方法与技术

水泥土搅拌桩的质量取决于喷浆量是否达到设计要求及浆量在桩身中的均匀度。作者对安装了“水泥土搅拌桩浆量监测记录仪”进行施工的工程经验进行了总结，并对施工工艺的改进进行了初步探讨。     

轻非水相液体在地下环境中的运移特征与模拟预测研究

通过自行设计制备的二维砂箱模拟轻非水相液体(LNAPL)在湿润多孔介质中的渗漏,得出LNAPL在地下环境中的入渗、迁移及分布规律,并利用多相流体理论对其污染机理进行分析.在实验基础上建立模型来预测渗漏的基本特征,即渗流带中污染锋面扩展速度和透镜体的最终形状,预测结果与实测结果较为接近.这种预测模型对控制和治理地下水中LNAPL污染是至关重要的.