Research On Dynamic Visual Simulation Of Underground Powerhouse Construction Based On CATIA

During the construction of underground powerhouse,there are some construction difficulties,such as concealed construction environment,limited construction space and extremely complex construction process.These difficulties have brought challenges to the reasonable formulation of the schedule and the accurate expression of the temporal and spatial relations among the construction processes.So how to solve these problems,and analyze the multi scheme optimization and decision making construction schedule management scientific and effective is the focus of the construction of the underground powerhouse schedule management research.This paper conducted in-depth research and analysis,and obtained the following results.(1)In order to improve the relationship between schedule model and 3D model in construction 4D model,the method of schedule transformation is put forward.The construction procedure of underground powerhouse is various,the construction process is extremely complex,which makes the construction process is difficult to describe in mathematical model.According to these problems,this paper uses the technology of system simulation to simulate the construction process of underground powerhouse for scientific schedule.In addition,the construction schedule is expressed in the form of time parameters,and the 3D models can't update according to the length of model.According to these problems,this paper provides a method to translate the schedule from the form of time parameter into the form of length parameter,which improves not only the relationship between schedule and model but also the way of creating 4D models.(2)In order to improve the efficiency of building and modifying the 3D models of underground powerhouse,a 3D parametric modeling method for underground powerhouse based on CATIA is proposed.Underground powerhouse has large number of caverns and many of them have similar section structures,which make the establishment of 3D models is complicated and repeated,and the models are difficult to modify.In view of these problems,this paper proposes a 3D parametric modeling method for underground powerhouse based on CATIA.Firstly,the model objects of underground cavern group are divided.Secondly,the models and templates of underground powerhouse are built based on parametric design,knowledge-based engineering,etc.Finally,all the caverns are integrated to form a whole model of underground powerhouse.(3)In order to unify the 3D modeling platform and visual simulation platform,a dynamic visual simulation method of underground powerhouse construction based on CATIA is proposed.At present,the dynamic visualization simulation of underground powerhouse construction is carried out by combining the 3D model with the construction schedule.However,the current method exits the problems that the 3D model is difficult to modify,and the visual simulation process is complex.In view of these problems,this paper builds the relationship between construction schedule and 3D model through design table.Thus,the 4D model of underground powerhouse construction based on CATIA is established,and the 4D visual interactive dynamic simulation and construction information query are realized.And the unification of modeling platform and visual simulation platform is realized.