2004年7月 – 至今，桥梁教研室，重庆交通大学土木建筑学院。  研究方向：桥梁结构检测、评定、维修与加固，损伤识别与桥梁在线/健康监测（SHM）。  发表学术论文共34篇，其中SCI收录11篇、EI收录6篇、中文核心6篇，参与学术专著3部；获得省部级科技进步一等奖、二等奖和三等奖共六项；主持课题与项目共5项，主研16项；在Cardiff School of Engineering开展合作研究（Sponsored researcher，为期一年）；赴英国The University of Glamorgan等大学短期访学；参编教材2部，以第一指导教师指导“挑战杯”团队，获全国二等奖与重庆市特等奖各一次；主持桥梁加固设计工程25座/项。 代表性论著： [1] LiuSimeng, et al., Mode-specific damage identification method for reinforced concrete beams: Concept, theory and experiments.[J] Construction and Building Materials 124 (2016) 1090-1099. (SCI Journal; JCR, Q1; 中科院, 2区; 2015, IF = 2.421) [2] Liu Simeng, et al., A NEW STRATEGY FOR STRUCTURE HEALTH MONITORING BASED ON STRUCTURAL DESTROYED MODE AND DATA CORRELATION，Intelligent Automation and Soft Computing，2012.12：671-677. (SCI index) [3] LiuSimeng, ChenZengshun. Heavy-Cargo Passage on Arch Bridges by Matching Attached Loads[J]. Proceedings of the Institution of Civil Engineers journal Bridge Engineering. (EI Journal) [4] LIU Simeng, et al., Searching for Mechanism Failure Paths of Masonry Arches: Theory and Experiment[C]. Structual Faults & Repair – 2016, 16th International Conference and Exhibition, 17-19 May 2016, Edinburgh, UK. [5] 刘思孟, 张立永. 圬工拱桥加固与加载程序优化方法[J]. 桥梁建设.2013.12(06):112-117. (EI收录) [6] Zengshun Chen; K.T. Tse, Tim; Si-Meng Liu; et al., Application of a Self-adaptive Kalman Filter Approach in Alignment Control for an Extra Long Span Rail Transit Cable-stayed Bridge[J]. Structure and Infrastructure Engineering. (SCI journal, Accepted)