拱坝廊道三维配筋可视化方法及应用

3D visualizational method of reinforcement in the gallery of arch dam and its application

以拱坝廊道为研究对象,以AutoCAD2007为平台,对水工建筑物的虚拟现实技术进行了初步探索.对三维CAD的系统研究表明,基于特征的三维参数化造型系统能够对复杂的水工结构进行建模,且系统通用性较强.利用实际数据进行廊道的三维实体绘制,并在三维模型基础上进行了三维配筋设计.在AutoCAD下结合Autolisp进行了二次开发,实现了数据库中钢筋属性的快速、批量录入;同时借助CAD平台在程序加载运行后,可以迅速点取、读出所关注钢筋的信息.设计中对廊道截面进行了细化,对子廊道采用连接、消隐方法,较好地实现了拱坝廊道的三维可视化.

By use of AutoCAD2007, the virtual-reality technology of hydraulic construction of the gallery in archdam has been explored elementarily. The systemy analysis for 3D CAD shows that a three dimensional parameterization modelling system can be constructed to model the complex hydraulic structure, and the system＇s versatility is more strong. The authors have drawn 3D substantiality of the the gallery by using actual data,and the design of 3D reinforcing bars has been made on the 3D model. In order to speed up the input of the steel bar attribute in the database, the AutoCAD has been re-developed with Autolisp. Batched input for the steel bar attribute is realized, and reading the steel bar information is done simultaneously by CAD platform. After loading the program, the needed information can be read immediately. In the application, the gallery cross section is refined, and 3D visualization of the gallery in the arch dam is realized perfectly by using the connecting and blanking methods for the sub-gallery.