河道拓浚需结合地方需求采用旧桥原址或移址新建桥梁.桥梁方案、总体布置和规模确定的影响因素较多,需综合考虑河道拓浚后的河道设计成果、道路规划,航道要求等选定.工程案例表明,把握住这些要点,并协调好各方关系,可有利推进桥梁和河道建设的顺利开展.

Revit平台中创建扶壁模型包含绘制扶壁轮廓和路径、放样、阵列复制、计算旋转角度并逐一偏转等操作,步骤繁杂且耗时;若是采用以往开发的插件创建扶壁式挡土墙模型则导线的类型和挡土墙的方向受到限制.为了满足多样化的扶壁放置需求,简化扶壁放置操作步骤,可利用Revit开放的二次开发接口API和C#语言技术,基于Visual Studio开发平台,模拟扶壁建模和放置的过程以程序代替结构创建、放样、阵列复制、偏转等操作步骤,并将复杂导线类型和挡土墙方向纳入程序判断,编写扶壁放置程序,通过参数化界面调整各项操作,使其具有直观性和灵活性,从而高效便捷地完成各类挡土墙扶壁放置操作.

Based on the summary of the project application and the effectiveness of river and lake management and protection in the basin of Qinhuai River, Shijiu lake and Gucheng Lake, the problems existing in the“one river and two lakes”watershed in terms of flood control capacity, water environment, water security and water ecology are analyzed, and the establishment and improvement of watershed management mechanism are explored from the aspects of speeding up planning, promoting project construction and strengthening ecological protection. The countermeasures and measures for flood control and ecological safety of“one river and two lakes”watershed are put forward.

Concerning the structure and construction characteristics of flow passage of non-typical curved vertical tubular pump, this paper develops and proposes a new construction method based on BIM information technology assistance, independent process prefabrication and comprehensive guarantee of construction. It introduces the construction process and technology in detail as well as the installation and construction technology of the template design for flow passage of non-typical curved vertical tubular pump. The key technology of the construction method is the scientific improvement on the basis of traditional construction technology, which is in line with the practical status and technical conditions, and has the advantages of advanced, scientific and applicable. Relying on the high control precision of the flow channel, the good solid quality and the smooth surface, the project can be popularized and used.

基于Revit平台手动创建多段空箱式挡土墙需要对立板、底板、空箱、扶壁、齿坎等构件重复进行轮廓编辑,其中还涉及计算、阵列和旋转操作,步骤繁冗复杂.为提高建模效率,基于Revit提供的API接口和C#技术进行二次开发,参数化挡土墙的各个构件轮廓和路径,图形化动态显示挡土墙截面,为用户带来便捷的使用观感和快速的建模方式.