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In recent years, as the traffic congestion has been increasing serious in Beijing, many advanced transportation science and technologies have been proposed to solve the traffic problems. Intelligent control of intersection has been one of the major elements globally in the research on road traffic congestion. Based on the experience of engineering practice, this paper does research of intersection fuzzy control modeling and the fuzzy control optimization modeling based on neural network. Then, it puts forward the method of intersection fuzzy control design based on state automaton technology. Based on Matlab/VAP, it presents the method of intersection fuzzy control simulation modeling. Finally, making an actual intersection for an example, it compares the effect of timing control, induction control, fuzzy control, and neural network fuzzy control.

The Pylon of Xinjiang Cable-Stayed Bridge has a special geometric form, of which the anchorage zone adopts the steel-concrete composite structure with built-in steel anchorage box. To investigate the mechanical behavior, the refined 3D finite element model has been established with the shear nails of steel anchorage box simulated. The stress conditions of steel anchorage box and concrete under prestressing bar and stayed cable forces have been then studied. The bearing proportion at the anchorage zone for the horizontal component of cable force has been calculated. Results indicate that the overall mechanical performance of the anchorage zone is excel, which can be a reference for designing of similar structure.

With Beijing subway Suzhou street station project, the composition of safety system for construction phase was studied. The safety responsibility of administrative department, technical branch, and operational department and construction personnel was clarified. The division and cooperative relationship were also analyzed. Meanwhile the construction techniques for shallow burial and dim excavation to improve safety performance for the whole project as well as surrounding environment under complicated city environment were discussed.

Beijing subway Huangzhuang stations is cross-transfer station. It has a complex tunneling structure. The characteristics of the reverse construction vertical well was been thinking in the course of excavation design. The vertical well excavation and support method, horizontal wells channel excavation and support methods, the main station pilot tunnel excavation and support methods were researched to determine in detail. In order to analysis and evaluation the feasibility of excavation and getting into hole, FLAC3D numerical simulation analysis method was applied to do simulation of the vertical well, horizontal channel and the main cavern excavation. All detail construction course of these three-part were been studied. Excavation and supporting method and progress were all included. The ground surface subsidence, deformation of support structure and strengthen structure were been got. On the condition of the vertical well support structure destruction caused by the horizontal guide hole excavation and the group cave effect caused by guiding cave excavation in main station underground building, the support structure and ground soil stability were studied. The research result gave the base technical support for the project optimization design and construction security.

Aiming at the safety management of the Beijing subway line 10 in the construction, the technical system research of safety management in the underground railway engineering construction were discussed including the objective management of safe production, field safety standards, the founding method for safety management system. The contents of responsibility system for safe production and the contents of safe-education and safe-inspection for workers were also studied. Safety precautions and Safe checkage standards were established during the railway’s tunnel construction.

With Yichang-Wanzhou Railway project being taken into account, this article systematically analyzes the control factors of geological hazard in tunnel construction including stratum, lithology, fold, rupture and groundwater seepage,etc, establishes hazard assessment index system, and induces the underlying principle and methods of index assignment. On the basis of the theory and technology of expert system, this article develops an intelligence analysis system for karst water inrush geological hazard risk assessment in tunnel construction, explores the construction method of karst water inrush geological hazard expert system and the implementation of software platform, and takes Qiyueshan Tunnel as an example to make the research of engineering application.

Combined with the geological conditions and the project features, the selection problem of pilot tunnel construction method of Huangzhuang station is solved. Directing at the commonly used method including CD method, CRD method and double side wall pilot tunnel method, FLAC3D numerical calculation method is adapted to analysis and predict the ground surface deformation and supporting structure hand features. Through analyzing the size and law of surface settlement in this section, the feasibility and differences of these methods is concluded and analyzed. And finally an example is given.

A through tied arch bridge model was designed and fabricated with removable and replaceable wind bracing. Through two methods, numerical simulation and model experiments, the effects of different wind bracing forms were studied, which was to the static characteristics, dynamic characteristics and stability of such kind of bridges, and the advantages and disadvantages of different forms of wind bracing were compared, which provided the corresponding references for the selection of rational wind bracing in actual bridge project.