Research On The Method And Application Of Pipe Automatic Layout

In the whole three-dimensional building space,the importance of building pipeline design is self-evident.There are many disadvantages in the traditional building pipeline design.Design time is long,rely heavily on the experience of designers,the pipelines designed by various professions are easy to cross-collision,the building space is being reused,and so on.In order to solve this problem,the research of pipeline automatic layout technology has been put on the agenda.The application of pipeline automatic layout technology can effectively reduce the construction time of the whole building,reduce the building energy consumption,and increase the utilization rate of the whole building space.At present,the pipeline automatic layout research is still in the primary stage,there are still a lot of problems to be solved and studied.Pipeline layout problem is a kind of NP-hard problem.There are innumerable points and lines in the whole 3D building space.It is difficult to solve the optimal pipeline path.The study of pipeline automatic layout in three-dimensional building space can improve the design efficiency,construction efficiency and the utilization rate of building space.With the progress of the times and the continuous emergence of design inspiration,the types of buildings continue to increase,and there is no unified building model can be used to solve the optimal pipeline path.Therefore,the method to find the optimal path of the pipeline needs to be applicable to all three-dimensional buildings.The algorithm used has high stability and high efficiency.The convenient and efficient pipeline automatic layout will play a very important role in the future intelligent building field.Therefore,it is of great engineering value to study the problem of pipeline automatic layout in three-dimensional buildings and related applications.The main contents of this paper are as follows:(1)Establishment of 3D Building Model and Pipeline ModelA simple three-dimensional building model of single pipeline,branch pipeline and multi-pipeline is established.A pipeline initial path generation method based on the intermediate point method is designed,which can successfully avoid obstacles,but the final result is not the best.In the next step,the initial path generation method will be improved.(2)The method of generating the initial path of pipeline is upgradedIn the aspect of generating the initial path,a method based on probability selection is added to the pipeline path which is generated based on the intermediate point method.When generating the next key point in the form of probability to give a certain guidance to improve the quality of the initial pipeline path in three-dimensional buildings.The four evaluation criteria of probability selection are whether to produce elbows,whether to approach the end point,the size of the energy value,and the length of the straight line segment.(3)Improvement of artificial Bee Colony algorithm in automatic Placement of PipelineIn the simulation experiment of solving the optimal path of pipeline,it is found that the accuracy of the algorithm is not enough in the late stage of the algorithm,and it may fall into the local optimal solution.Therefore,the levy flight and adaptive strategy are added to the standard artificial bee colony algorithm,which improves the optimization ability of the algorithm in the pipeline automatic layout.Finally,through the simulation experiment,the result of the pipeline generated in the building model is ideal.(4)Application of Pipeline automatic layout results in practical SoftwareThe simulation results of the theory are mainly applied to the actual software through the form of Revit secondary development.Configure the related environment of the secondary development of Revit,test whether the deployment of the environment is successful,calculate the inflection point through the way of theory,and apply the simulation results to the Revit2015 software.(5)Study on the automatic layout method of multiple pipeline,branch pipeline and double pipeline with constraint conditionsThe research on automatic layout of single pipeline is extended to the research of multi-pipeline,branch pipeline and double pipeline with constraint conditions.The idea of co-evolution is introduced to apply in the automatic layout of multiple pipelines,the split method is used in the automatic layout of branch pipelines,and the design constraints are applied in the automatic layout of related double pipelines.Through the simulation experiment,the relevant simulation experiment diagram is shown.(6)Study on recognition and location of irrational Pipeline layout area in Revit Two-Dimensional PlanDue to the diversity of building types,the building models to be used in the future will also be varied.In order to facilitate the establishment of the building model,the method of extracting HOG features combined with SVM classifier is used to locate the reasonable layout of non-pipeline in the two-dimensional plan of Revit,which is convenient to determine the location of obstacles in the building model.