基于松软地面的复合材料铺面板设计研究

为研究荷载作用下基于松软地面的铺面板的力学特性,运用大型有限元分析软件ANSYS,选取水田和沙滩两种典型松软地面,对六种工况下铺面板路面系统的沉降、变形以及应力分布进行了计算分析。各种工况下,铺面板的应力没有超过玻璃钢的许用值,能够满足重载车辆的交通保障需求,玻璃钢是理想的路面器材材料。     

FRP用于混凝土构件补强加固耐久性能研究

对FRP材料本身及FRP的设计施工进行分析，探讨FRP用于补强加固时的耐久性能。     

我国玻璃钢渔船发展历程及建造工艺技术

介绍了我国大陆及台湾玻璃钢渔船的发展历程及台湾玻璃钢渔船迅速发展所采取的措施,概要介绍我国玻璃钢渔船相关技术法规建设及真空树脂导入成型工艺技术的应用情况及存在的问题,探讨了今后的研究方向。     

玻璃钢渔船舭龙骨连接形式的研究

在对玻璃钢渔船舭龙骨连接形式调查研究的基础上,根据舭龙骨在水中所起到的阻尼作用,计算渔船舭龙骨板所爱的应力;并根据４种玻璃钢骨架的剥离试验数据,计算出玻璃钢渔船舭龙骨的连接强度。将计算结果与试验结果相比,选出了适合不同玻璃钢渔船的舭龙骨连接形式。     

Analysis of a steel tubular column filled with equidistant fiber reinforced polymer ring stiffening concrete

Based on theory of cylinders subjected to uniform internal pressure, the mechanical performance of a steel tubular column filled with equidistant fiber reinforced polymer (FRP) ring stiffening concrete is investigated. The solutions for the stress and displacement are regarded as the superposition of elementary and improved solutions. The elementary solutions are found by using two dimensional elastic theory. The improved solutions are found by using the Love displacement function method. Considering the conditions of the displacement continuum of the FRP ring and the steel tube exterior, a more accurate solution for an equidistantly FRP ring stiffened cylinder subjected to a uniform internal pressure is obtained. Several numerical calculations are also carried out. The results indicate the solutions possess good convergence.     

Comparison of Strength and Ultimate Strain Models of Concrete Columns Confined with FRP

Based on maintaining the accuracy of existing models for circular specimens, revised models were proposed for predicting strength and ultimate strain of concrete columns confined with FRP with considering the effectiveness of confinement by cross section. An evaluation of existing strength and ultimate strain models of concrete columns confined with FRP was presented with extensive collection of experimental data. It was shown that the prediction of strength was more accurate than that of ultimate strain, among which the prediction of Gampione’s strength model and Lorenzis’s ultimate strain model were more accurate for all specimens and circular specimens, respectively. The comparison with experimental results and existing models showed that the proposed models were more accurate, simpler and more convenient. The proposed models can be used for the prediction of strength and ductility in practical engineering.     

纤维增强聚合物对中密度纤维板的增强效果

采用碳纤维布和玻璃纤维布与中密度纤维板复合,研究纤维布种类、胶粘剂品种、涂胶量及纤维板基材厚度等因素对纤维增强聚合物／MDF复合板性能的影响。结果表明：对于复合板静曲强度和弹性模量的提高,碳纤维布的效果优于玻璃纤维布;酚醛胶单面涂胶量为180g／m2时,复合板的MOR、MOE和他分别达到3633．8、62．5、1．046MPa;环氧胶单面涂胶量为120g／m2时,复合板的MOR和MOE分别为3900．5、49．58MPa;中密度纤维板厚度不同,其静曲强度和弹性模量提高量也不同,FRP对薄板的增强效果优于厚板。     

新型膜内油漆的工艺性能和使用前景

指出了随着大兆瓦叶片制作的日趋效率化和大兆瓦级叶片在风场运行环境的多元化,对叶片的生产效率、质量要求也越来越高。在风场运行叶片对环境的适应性主要取决于表面涂层的保护作用,对大型风机叶片新型表面涂层进行了探讨,通过实验和产品运用介绍了其配制方式、使用方法及工艺性能。探讨了该新型膜内油漆替代原本的膜内胶衣和油漆,对玻璃钢叶片的应用具有一定的指导意义。     

关于农网改造工程两个突出问题的探讨

文章作者为多年网改工作技术管理工作多年,作者针对10KV电缆套管敷设保护管的优化选择和改造后漏电保护器的安装与管理等两个突出问题进行分析,并提出解决措施,以确保电网安全、稳定运行,提高供电质量和供电可靠性.     

近海玻璃钢拖网渔船的技术经济方程和特征分析

根据近海玻璃钢(FRP)拖网渔船缺乏技术经济论证数学模型的问题,建立了针对玻璃钢拖网渔船的技术经济方程,对方程中的油耗、经济寿命、造价、维修费用、折旧费等经济影响因素进行了分析比较。结果表明:多数指标变量对玻璃钢渔船的经济性是有利的,仅造价指标具有负面影响,本研究中建立的技术经济方程有效地满足了玻璃钢最优船型论证的需要,可为船舶建造、捕捞管理提供计算及指导依据。