Integrated LADM-BIM Data Model for Building Ownership and Its Subsidiary Rights
With the increasing awareness of property rights among residents,the number of legal disputes concerning the differentiation of ownership,easements,and right to light in urban buildings has been steadily rising.This trend has adverse effects on the establishment of harmonious urban communities and entails a substantial expenditure of social resources.However,current research predominantly focuses on legal descriptions of these rights,and falls within a limited scope that solely employs three-dimensional technology to construct ownership spatial models.There exists a dearth of in-depth exploration into the spatial structures of the complex ownerships and their associated rights(easements and right to light)pertaining to buildings.This study conducts an in-depth analysis of the data requirements for three-dimensional modeling of building ownership,easements,and right to light within the legal context.Through the extension of the Industry Foundation Classes(IFC),an integration of the Land Administration Domain Model(LADM)and the Building Information Modeling(BIM)is achieved,resulting in a three-dimensional data model.This model adheres to the extension logic within the IFC standard.It is based on the concepts of property sets and user-defined properties in the IFC standard,and maps the Party Package,Spatial Unit Package,Administrative Package,and Surveying and Representation Package from the LADM to the IFC standard.This model takes into account the intricate spatial structure of building ownership and its computational rules.For easement rights,special consideration is given to three-dimensional instantiation in both horizontal and vertical directions.As for light to right,calculations encompass adjacent daylighting rights,daylighting easements,and their respective parameters.The amalgamation of LADM and BIM empowers the proposed model to vividly present the spatial characteristics of physical objects and concurrently reflecting the legal information of Rights,Restrictions,and Responsibilities(RRR)of the buildings.To validate the feasibility and applicability of the proposed model,three actual legal dispute cases were selected for analytical experiments.These cases encompassed:the visualization and analysis of property ownership within the three-dimensional data model,quantification of the impact of easements on the spatial utilization of property ownership,and the evaluation of the effect of right to light on residential units within a building.The results affirm that the constructed model proficiently distinguishes the internal spatial aspects of ownership,encompassing complex structures,and effectively expresses easements and right to light in three dimensions.Moreover,it encompasses sufficient ownership information,providing a clearer understanding of the legal space and furnishing a reliable and robust technical solution for resolving relevant disputes.
building ownershipeasementslight to right3D data modeldata requirementsLADMBIM/IFClegal disputes
NETL
NSTL
万方数据
