积极开发“六能”岗位培训提高机关管理人员业务素质

本文从区分层次、突出重点、奖优罚劣等方面论述了如何开展“六能”岗位培训工作，不断提高机关管理人员业务素质。     

基于p—y曲线法的高桩码头有限元分析

利用有限元软件ANSYS对高桩梁板式码头整体结构进行三维有限元分析。在桩土相互作用的处理中,采用复合地基反力法即p-y曲线法模拟土体,将土体离散成法向与切向非线性土弹簧,分别模拟桩侧土抗力与桩的侧摩阻力及桩端阻力,这较之前常用的按照嵌固点计算的常规算法更能使得进行结构计算时反映出真实情况。通过计算分析,得到基于复合地基反力法的桩基的弯矩与剪力图。比较在同等荷载作用下基于p-y曲线法与常规算法下两种有限元模型的计算结果,通过桩的轴力、弯矩及剪力等计算结果的比较分析得到两种计算方法的差别,为高桩码头的设计计算提供参考。     

潜艇动力抗沉非线性效应及计算分析

应用潜艇垂直面非线性操纵性运动方程、破损舱进水方程和压载水舱排水方程,建立潜艇动力抗沉运动方程。数值计算潜艇典型隔舱破损进水后的动力抗沉运动,分析典型隔舱动力抗沉挽回运动和无法挽回运动的特征。针对不同初始航速、初始潜深和破口面积情况,数值计算得到典型隔舱动力挽回限界线。通过对典型隔舱动力挽回非线性限界线的分析,提出潜艇动力抗沉效应的概念,以及衡量潜艇动力抗沉能力大小的衡准参数——高压气吹除动力挽回深度、动力抗沉水动力初速和水动力航速系数,由此分离出潜艇动力抗沉运动中的高压气效应和水动力效应。     

装配式混凝土空心板梁桥单板受力问题的数值解析

借助空间有限元分析软件ABAQUS,分析了装配式空心板梁桥铰缝开裂对桥梁跨中截面荷载横向分布的影响,分析了单侧铰缝开裂、双侧铰缝同时开裂的情况,通过数据回归分析得到了跨中截面荷载横向分布系数随铰缝开裂长度变化的规律,采用等效面积法得到了出现单板受力现象的铰缝开裂临界长度值,分析得出了以下结论:对于单侧铰缝开裂情况,建议临界铰缝长度定为1.0L;对于双侧铰缝开裂情况,建议临界铰缝开裂长度约为0.67L。该研究成果为养护检查中定量化判定"单板受力"问题提供了技术依据,同时也为装配式混凝土空心板梁桥横向整体性加固试验研究提供了理论参考。     

汽车儿童约束系统综述

汽车儿童约束系统（Child Restraint System）是一种有效的安全装置,能够减少儿童在车祸中的伤亡。随着我国家用轿车的普及,研究儿童约束系统有着重要的意义。本文介绍了汽车儿童约束系统结构和种类以及国内外发展状况,展望了汽车儿童约束系统在我国普及所面临的问题。     

混凝土桥梁损伤诊断及承载力评估述评

阐述了混凝土桥梁结构的承载力与安全性评估、健康检测及损伤诊断的必要性和迫切性；系统论述了适用于混凝土桥梁损伤识别的检测技术、诊断方法，以及带损伤混凝土桥梁的承载力评估的理论和方法，最后指出了值得进一步研究的问题。     

Study on the toxic effect of the mixture of organophosphorus pesticide on perinatal rats

Objective To observe the toxic effect of the mixture of organophosphorus pesticide （MOP） on maternal rats and on the growth and development of their offspring. Methods Totally 40 Sprague-Dawley pregnant rats were randomly divided into three MOP dose groups and one control to which their offspring would be assigned, The experimental dosage of MOP and distilled water were administered orally starting on gestation day 15 and continued for 35 days. The physical development indices and the learning ability of F1 rats were measured during lactation. The pathological changes of uterus and liver of F0 rats were observed after weaning, while the weight ratio of uterus and some viscera to body of the F1 were examined. Results There were obvious changes of uterus and liver in the high-dose group of F0. The body-weight accretion of the F1 in high-dose group was obviously lower than that in control group （P〈0.05）. Some of the MOP F1 rats development indices delayed significantly （P〈 0. 05）, the learning ability decreased obviously, and the time of setting up memory prolonged （P〈0.05）. The ratio of the uterus weight to bodyweight in the F1 MOP groups was significantly higher than that in control group （P〈0. 05）. Oonclusion The experiment doses of MOP are proved to have significant reproductive toxicity on perinatai rats.