独塔双索面斜拉悬臂组合结构桥静、动载试验研究

剑邑大桥是一座独塔双索面斜拉一悬臂组合结构桥.通过静、动载试验研究,了解桥梁的承载能力和动力性能,并将试验结果与理论计算结果进行了比较分析.试验结果表明,剑邑大桥的工作性能满足设计要求,并符合规范规定.     

AR2W2��SFC ģ�͵Ŀ���ʵ�����о�

GIS 技术在ITS 中的成功应用在于对海量空间地理数据的管理，对空间数据的合理组织及快速的空间对象检索.为空间数据建立索引是管理空间数据、提高检索速的一个重要方面. 本文在AR2W2 - SFC 曲线模型的基础上，利用标签方法在算法上实现了该曲线模型，并将该模型应用于空间索引. 通过实验研究发现，在四叉树高度较低的情况下，AR2W2 - SFC 曲线作为点对象的空间索引的性能优于Hilbert 曲线.     

城市道路交通建设项目后评价中的社会评价的研究

对社会评价的指标体系和评价方法进行了探讨，并根据城市道路交通建设项目后评价的特点，提出了采用模糊综合评价方法进行社会评价。     

钢框架考虑节点域剪切变形及P—△效应的层间剪切模型

采用杆系模型形成结构的总刚矩阵，分析时考虑了梁、柱的弯曲、剪切、轴向变形以及节点域的剪切变形；经过静力缩聚将其化为质点串模型，然后结合层模型的一些特点，得出等效层问剪切刚度，最后利用层问剪切模型的简化二阶分析方法得到了考虑二阶效应及节点剪切变形的层间剪切模型总刚矩阵。     

公交专用道政策及评价

公交专用道具有大容量、灵活方便、快速（或准快速）等性能,能够提高公共交通车辆的行驶速度,减少城市客运车辆出行总量,缓解交通拥堵,改善道路上机动车流的运行状况,因此,制定并执行公交专用道政策具有十分重要的意义。     

浅谈水泥混凝土路面断板的原因及预防方法

论述了水泥混凝土路面施工中断板产生的原因,针对不同的情况采取了相应的预防措施。     

公路景观浅议

谈公路景观与环境的关系,提出了具体的绿化、美化措施。     

船体小组立自适应路径规划系统

通过对船舶小组立产线中机器人焊接系统的技术水平分析,研究小组立产线的科学排产、节拍控制和工艺匹配等技术,论证机器人船体小组立自适应控制方法对比和结构件特征参数化定义技术,分析视觉识别和路径规划作业后处理技术方法,并进行实验论证,为船体小组立生产线智能化升级提供可以借鉴的方向与思路,为船舶建造智能化转型建设积累实践和技术经验。     

钢夹层板数值模拟技术(英文)

Sandwich plate systems (SPS) are advanced materials that have begun to receive extensive attention in naval architecture and ocean engineering. At present, according to the rules of classification societies, a mixture of shell and solid elements are required to simulate an SPS. Based on the principle of stiffness decomposition, a new numerical simulation method for shell elements was proposed. In accordance with the principle of stiffness decomposition, the total stiffness can be decomposed into the bending stiffness and shear stiffness. Displacement and stress response related to bending stiffness was calculated with the laminated shell element. Displacement and stress response due to shear was calculated by use of a computational code write by FORTRAN language. Then the total displacement and stress response for the SPS was obtained by adding together these two parts of total displacement and stress. Finally, a rectangular SPS plate and a double-bottom structure were used for a simulation. The results show that the deflection simulated by the elements proposed in the paper is larger than the same simulated by solid elements and the analytical solution according to Hoff theory and approximate to the same simulated by the mixture of shell-solid elements, and the stress simulated by the elements proposed in the paper is approximate to the other simulating methods. So compared with calculations based on a mixture of shell and solid elements, the numerical simulation method given in the paper is more efficient and easier to do.