摘要:为解决案例工程地质条件复杂、施工场地狭小、支护形式多样、施工工期紧张的难题，本文将地下工程施工与BIM技术结合。首先，通过Bentley平台，导入地质勘察报告钻孔等原始数据，结合经验贝叶斯克里金法(EBK)，完成地质体模型的创建。其次，通过耦合地质体模型与桩基模型，基于插值计算法，核算并导出灌注桩理论桩长数据，从而指导现场桩基施工桩长合理控制。结果表明，基于BIM的地质模拟、场地布置模拟等应用，可有效解决复杂地质地下工程施工过程中桩长控制、狭小场区内施工组织等难题，从而提升工程质量、缩短施工工期。

Abstract: BIM technology has the characteristics of visualization and simulation. Its application in engineering detailed design and construction management on the site is more and more extensive. Based on BIM technology, The application value of geological simulation and construction organization simulation in the construction of deep foundation pit engineering is also gradually prominent. In order to solve the problems of complex engineering geological conditions, narrow construction site, various support forms and tight construction period, BIM technology is applied in the construction of underground works of the project. Firstly, the original data such as geological survey report and borehole are imported into Bentley codes. The geological body model is created by the combination of Bentley platform and the Empirical Bayesian Kriging method (EBK). Secondly, based on coupling geological model and pile foundation model, the theoretical length of cast-in-place pile can be checked and derived by interpolation method. The reasonable control of the pile length in site pile construction can be guided according to the above method. Combined with the application and verification of practical engineering, the research results show that the application of geological simulation and site layout simulation based on BIM can effectively solve the problems such as pile length control and construction organization in the construction process of complex geological and underground engineering. The quality of the engineering can be improved, and the construction period can also be shorted.