Study On Application Of BIM Technology In Caisson Design Using Revit

Gravity caisson wharf is one of the widely used wharf forms in port construction,which has better durability,frost resistance and ice resistance.Building information modeling(BIM)uses the relevant information data of construction projects as the basis of the model to build model,and simulates the real information of the building through digital information simulation,which greatly improves the level of model information.Based on Revit software,this paper studies the combination of BIM technology and caisson.1.The caisson family is established,through the basic caisson data,the three-dimensional model of caisson is quickly generated and the concrete consumption of caisson is calculated.2.The caisson rebar family is established,and the rebar family is arranged on the caisson family model.Users can directly generate the three-dimensional model of the caisson rebar family by inputting the parameters such as the length,diameter and spacing of the rebars.3.Based on the Visual Studio 2015 development tools and using the object-oriented C # language,the caisson automatic optimization design and reinforcement plug-in was developed.Through obtaining the natural conditions and wharf scale parameters entered by the user in the interactive interface,the caisson height is calculated and the corresponding family type in the caisson family is automatically matched,and the parameters are taken as the caisson design size.Calculate the self gravity,wave force,mooring force,earth pressure,ground stacking load and hoisting equipment load acting on the caisson,and check the anti tilting stability,anti sliding stability and bearing capacity of the foundation bed of the caisson.The plug-in optimizes the design of caisson width and rock fill height to obtain a more economical caisson design.In addition,the stresses of the caissons during the construction period and normal service period were analyzed,and the load design value and internal force envelope value at the limit of the bearing capacity were calculated,and the reinforcement area was calculated initially to obtain the reinforcement plan.In the normal service limit state,the reinforcement plan is modified according to the crack width requirements.Finally,the calculated caisson size is given to the caisson family parameters,and a three-dimensional model of the caisson is established,and the steel bars are arranged on the caisson model according to the reinforcement plan.The establishment of the three-dimensional caisson model and automatic reinforcement are realized.4.The caisson model modification plug-in was developed to modify the automatically generated caisson model.The plug-in can read the modified caisson parameters,and call the natural condition parameters previously entered to perform anti tilting stability,anti sliding stability and foundation bearing capacity check calculation of the caisson,and calculate the reinforcement of the modified caisson.Finally,the dimensions and reinforcement layout of the caisson model are modified.5.Taking the Pikou Gravity Port in Dalian as an project example,the caisson automatic optimization design,automatic reinforcement and the generation of three-dimensional caisson model were carried out,which verified the correctness of the caisson automatic optimization design and the function of the reinforcement plug-in.At the same time,the cost and rebar cost of each caisson along the length of the caisson designed by the plug-in are compared with the original plan to verify the caisson parameter optimization function.The application of the plug-in developed in this article to actual projects reflects the practical value of the research done in this article.