Analysis On The Influence Of Shield Construction On Adjacent Pile Foundation

Nowadays, the population in the city is increasing, city traffic congestion problem is becoming more and more serious, therefore, many large and medium-sized city in China are in the construction of the subway, and make full use of underground space to alleviate the traffic problem. The subway is building in urban with a large population and buildings around. So shield subway will inevitably have influence on the surrounding building structures such as high-rise buildings, and high iron viaduct,etc. Due to the above-mentioned buildings,they always use pile foundation. So the research has important practical significance influence when shield near the foundation construction of piles.In this paper, the theoretical analysis, numerical simulation analysis and field measurement analysis methods are combined and use it to analysis the shield near the foundation construction of piles On the basis of the actual project.1、Firstly, based on reading lots of documents, we summarizes the research status at home and abroad on the influence of pile body of the shield construction, and use the engineering analysis method to derive the shield proximity pile construction, the settlement formula of displacement of pile body.2、Secondly, combined with the actual engineering example of Hefei, the influence of shield construction on the surrounding strata and pile was simulated with using the finite element software MIDAS NX and have analysis on the rules of soil around pile and displacement response.we compared it with the monitoring data;3、Considering the different spatial position, the influence of shield on the pile body and summarize the safety range of tunnel and pile body.4、Finally, this paper summarizes some focus on control point and common engineering protection measures of the shield tunnel construction of adjacent pile foundation, it can be used as reference for similar projects in the future.