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Keynote Speakers



Prof. Jie XU / 徐杰教授
Tianjin University, China


Title: Overview of the new development and research of Crumb Rubber Concrete
Abstract: Crumb Rubber Concrete (CRC) has become a matter of interest for new environmental material in the last few years, duo to its good performance and as an alternative for tire recycling. This research will focus on the new development and research on the CRC. Three aspects of CRC will be discussed in this report. Firstly, the recent corresponding research will be summarized and analyzed to show the advanced achievement.  Secondly, the Crumb Rubber Concrete-Steel composite beam will be interpreted from both static and fatigue aspects. Last but not least, the Microcracking Monitoring and Fracture evaluation for Crumb Rubber Concrete based on Acoustic Emission Techniques will be expressed.


 

Prof. Chen Wang / 王晨教授
Huaqiao University, China


Title: Engineering Immersive Experience Towards Self-reliance: Lab-based Attempt For Construction Education
Abstract:A construction engineer or student who does not fully understand the architecture of a project may hamper communication and measurement problems. The tremendous potential that VR could lead to a number of important changes in human life and activity has been witnessed from a wide range of application areas such as education and training, engineering , architectural and urban design, heritage and archaeology, and medical science.The aim of this study is to train students to develop a VR-embedded BIM immersive system in lab for quantity surveying practice and education, which consists of two main components: Immersive System (Head-mounted display/360-degree display) and Non-immersive systems (Desktop VR). 


Oral Presentation


A.Prof. Youzhong Lu/陆有忠
Yichun University


Title: Research on In-situ Stress Testing of Deephole Cores from Earthquake Faults Using the Inelastic Strain Recovery Method
Abstract: The Wenchuan Earthquake Fault Scientific Drilling Project, a scientific drilling project that first responded to the Earthquake, performed deep 3D in-situ stress measurements using the inelastic strain recovery of core method for the first time under conditions whereby the borehole breakout method and hydraulic fracturing method could not be applied. The inelastic deformation of the deephole cores under the action of 3D stresses was simulated based on the inelastic strain recovery of viscoelastic body theory and core testing theory and the direction & magnitude of 3 major stresses were calculated under the precondition of homogeneous isotropy. In the field laboratory of the WFSD Project, the testing system developed was used to test the normal strain of inelastic recovery strain of deephole cores in 6 independent directions and determine the direction & magnitude of 3D in-situ stresses of the test points. In order to verify the effectiveness of the inelastic strain recovery method, an analysis was given into the testing result of #1 hole of the WFSD Project, which perfectly matches the result obtained by means of focal mechanism solution and other stress measurement methods, indicating that the inelastic strain recovery method is reasonable and reliable and is more applicable under complex geologic conditions whereby other in-situ stress testing methods cannot be applied. The method provides a new means for performing in-situ stress measurements using the core method under large-depth drilling conditions.


 

Hongmin Ma/马鸿敏
Xi'an Jiaotong University


Title: Shaking Table Model Test Design for Utility Tunnel
Abstract: Three methods are mainly used in the seismic research of underground engineering, including theoretical research, numerical calculation and experimental research. In this paper, a detailed design of a utility tunnel shaking table test is carried out. First, the selection of the shaking table, model box and sensor were analyzed and studied. Then the test scheme was designed in detail. The design of the test scheme mainly includes 4 aspects. These 4 aspects are the similarity ratio design, the reinforcement of model structure, the input seismic wave and the sensor arrangement. In the design of similarity ratio, E, ρ, L and a are the basic quantities. The other variables are converted by the idea of combination dimensional analysis and kinetic equation. The height of the model box is not more than 2.5m according to the previous research results. The height of the model box should be smaller, and the height of the model box is 1.8m by calculation. The reinforcement ratio of the equal area is adopted. El-Centro wave, Kobe wave and Taft wave were selected in the experiment. One way step by step loading system was adopted in the test. At last, the position and quantity of the 4 kinds of sensors used in the experiment were studied, and the detailed layout of sensors were given.


Nan Li/李楠
Chang’an University


Title: Seismic response of landslide with micropile groups
Abstract: In order to study the seismic response of the landslide with micropiles, shaking table tests were performed on two landslide models (i.e., micropiles-reinforced landslide and unreinforced landslide). El Centro waves, Wenchuan waves, Kobe waves and sinusoidal waves with different frequencies were applied to the model. A comparison was made on the acceleration response between reinforced landslide and unreinforced landslide. Furthermore, the residual bending moment and failure mode of micropiles were analyzed. The results show that micropiles have a good seismic performance for landslide, and it can suppress the seismic waves that in landslide. Under the same seismic wave, the acceleration response of reinforced landslide is smaller than that of unreinforced, especially in the toe. The residual bending moment of micropiles shows reverse “S”-type, which is consistent to the failure characteristic of micropiles after earthquake. The destruction area of micropile mainly distribute in 1.4-4 times pile diameter above the sliding surface and 1.4-3.4 times pile diameter below the sliding surface. In seismic design of micropiles in landslides, it is necessary to strengthening the destruction area.



Xueling Liu/刘雪玲

Chang’an University

Title: Prediction of Horizontal Displacement of Retaining and Protection Structure Based on BP Neural Network
Abstract: The horizontal deformation and displacement of retaining and protection structure is one of the most important forms of deformation and failure of deep excavations. Because of the complexity and deformation nonlinearity, the artificial neural network technology is introduced into the deep excavations system. Based on Matlab neural network toolbox function, an artificial neural network prediction model was established to predict the horizontal displacement of retaining and protection structure of a project in Guangdong Province. The BP neural network prediction model replaces the actual model, so as to provide guidance for excavation of the deep excavations and the design of retaining and protection structure. The results show that the predicted value is consistent with the actual monitoring value, which shows that the application of BP artificial neural network to the displacement prediction of deep excavations is feasible and reliable.


Mingqin Xie/谢铭勤
FuJian University of Technology

Title: The Practice and development of Fabricated bridge:A review 
Abstract: Due to the standardized (modular) production of components, fast construction speed, easy quality control, and favorable environmental protection, the use of fabricated bridge is attractive, especially to sea-crossing bridges and urban bridges. This paper reviews available information concerning the application and development of fabricated bridge. Three bridge examples are then introduced, while the structural design and the construction methods of fabricated piers are described in detail. Furthermore, main construction of fabricated piers are concluded. Finally the future research direction of fabricated bridge is viewed.



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