路基边坡的深层治理措施

通过对路基边坡深层治理措施的探讨,提出排除深层地下水、土钉支护、锚固技术三种具体治理措施,并通过计算,对其设计方法进行深入论述,对路基边坡深层治理意义重大。     

奎赛公路水泥稳定砂砾基层试验工程研究

通过对奎赛公路工程第五合同段K335＋300-K335＋500段水泥稳定砂砾基层试验段的试验研究,探讨不同控制条件下水泥稳定砂砾基层的强度变化规律、力学性能及裂缝产生情况,确定合理的施工技术参数、最佳的资源配置及最合理的施工组织,可以推动水泥稳定砂砾基层大规模快速优质施工。     

对AASHTO柔性路面加铺层设计方法的评述

系统总结了美国AASHTO指南中的加铺层设计方法,并对其进行分析评论,为完善我国半刚性基层沥青路面的加铺层设计方法提供借鉴.     

Steady-state single cell model simulations of photoacclimation in a vertically mixed layer: implications for biological tracer studies and primary productivity

A numerical single-cell photoacclimation–diffusion model was constructed and used to develop criteria regarding the use of individual phytoplankton cells as tracers for vertical mixing and to illustrate how rates of vertical mixing might affect phytoplankton physiology. Both first-order and logistic representations of photoacclimation kinetics were used. Steady state was assumed for simplicity and to provide a starting point for further investigations. The modeled variance and higher moments (within a phytoplankton population) of a generic photoacclimative parameter all show trends, which are diagnostic of mixing rates and/or boundary effects. This allowed the establishment of criteria by which frequency distributions of phytoplankton physiological properties (e.g., cell fluorescence) might be used as indicators of vertical mixing. The same model can be used to predict the effects of vertical mixing on phytoplankton productivity and growth. Application of the model to both photosynthesis and carbon to chlorophyll ratios suggested that a combination of vertical mixing and hysteresis (as represented in the logistic model of photoacclimation) in acclimation kinetics can enhance specific growth rates of phytoplankton. This enhanced growth occurred as a result of mixing-induced variation in carbon to chlorophyll ratios and is in contrast to chlorophyll-specific productivity, which was maximal at low mixing rates. Differential rates of photoacclimation to upward vs. downward shifts in irradiance, may enable phytoplankton cells to better survive in a turbulent environment.     

地质雷达在隧道覆盖层不良地质检测中的应用

文章从地质雷达的工作原理入手,利用低频天线地质雷达对某高速公路隧道覆盖层的地质状况进行了探测分析,并提出了相应的工程防治措施。实践证明,低频天线地质雷达能有效探测隧道覆盖层地质状况,探测结果可靠。     

车辆荷载作用下应力吸收层阻裂效果分析

文章通过建立平面应变模型,对比分析了车辆荷载作用下有无设置应力吸收层的沥青加铺层结构的裂缝尖端应力和应变场变化情况。结果表明,应力吸收层能有效改善结构裂缝尖端应力和应变场,具有良好的阻裂效果。     

一种红外隐身电站的设计和分析

本文基于微电网项目,对其中的一个供电模块,即一种红外隐身电站进行设计和分析,电站主要采用双循环全液冷降温散热系统、双层箱体隔热及专用防红外涂料等防红外设计措施,使其具有防红外隐身的特点.     

基于关联规则的舰艇故障诊断数据挖掘系统结构框架

该文针对许多舰艇故障现象不能用结构化的数据来表达 ,基于规则推理的传统专家系统对规则提取又是相当困难 ,提出了一种以过去已有的大量诊断案例和可能发生的故障和排除方案作为知识的来源 ,基于关联规则的舰艇故障诊断数据挖掘系统结构框架 ,并讨论了舰艇装备系统单层次故障和多层次故障关联规则的挖掘。     

正交异性钢桥面柔性防水粘结材料应用技术研究

结合江阴大桥钢桥面铺装研究课题,对由Bostik9225粘结底剂与橡胶改性沥青胶泥组成的柔性防水粘结层材料的结构组成、技术性能与施工工艺等进行了探讨,得出了不同厚度与温度条件下的拉拔强度和不同温度下的层间剪切强度,并对研究的成果进行了工程应用,研究表明该防水粘结材料可以满足江阴大桥的实际运营需要,是一种良好的钢桥面防水粘结材料.     

对称荷载作用下沥青加铺层内荷载应力变化分析

在交通荷载的作用下,旧路面对沥青加铺层形成的反射裂缝是造成沥青路面病害的主要原因之一。研究了沥青加铺层的厚度、弹性模量、综合地基的弹性模量在对称荷载作用下对沥青加铺层的荷载应力影响变化规律,发现裂缝尖端产生破坏取决于尖端是受压还是受拉,进而提出加铺层设计的设计参数。