Analysis and Prediction of Foundation Settlement of High-Rise Buildings under Complex Geological Conditions

• 作者: Bingjun Li Erxia Du Jihui Ding Tuo Zhao Weiyu Wang
• 来源期刊: 世界工程和技术(英文)
• 学科: 医学
• 关键词: COMPLEX GEOLOGICAL Conditions SETTLEMENT LAW SETTLEMENT PREDICTION The BP NEURAL Network
• 年，卷（期）: 2017,（3）
• 页码范围: 445-454
• 页数: 10页
• 分类号: R73

摘要

Based on an example of a project in Tangshan, the high-rise buildings are built in karst area and mined out affected area which is treated by high pressure grouting, and foundation is adopted the form of pile raft foundation. By long-term measured settlement of high-rise buildings, It is found that foundation settlement is linear increase with the increase of load before the building is roof-sealed, and the settlement increases slowly after the building is roof-sealed, and the curve tends to converge, and the foundation consolidation is completed. The settlement of the foundation is about 80% - 84% of the total settlement before the building is roof-sealed.Three layer BP neural network model is used to predict the settlement in the karst area and mined affected area.Compared with the measured data, the relative difference of the prediction is 0.91% - 2.08% in the karst area, and is 0.95% - 2.11% in mined affected area. The prediction results of high precision can meet the engineering requirements.