The pile-soil dynamics is an interdisciplinary studies of structural, geotechnical and vibration engineering in the existing bridge. Traffic load model, the developments and status in the existing bridge were reviewed and introduced. The main content and characteristic of pile were summarized in clay, sand, silt and red clay. Main problems existed in the study of cyclic loaders on the piles were discussed. The prospect of future research trend in this field was also examined.

Job shop scheduling problem (JSP) plays a significant role for production management and combinatorial optimization. An improved artificial bee colony (IABC) algorithm with mutation operation is presented to solve JSP in this paper. The results for some benchmark problems reveal that IABC is effective and efficient compared to those of other approaches. IABC seems to be a powerful tool for optimizing job shop scheduling problem.

The finite element method divides the existing solid structure into a finite number of elements. It integrates and analyzes the divided elements according to preset criteria, and then solves the equilibrium equation of the overall structure according to the corresponding boundary conditions. The problem is analyzed through a finite element model. A large amount of data from the experiment are derived, and then data mining technique is used to find out the data that are useful for the experiment. The purpose of this paper is to test bridge engineering through data mining technology, and then simulate different fiber-reinforced concrete models through finite element method. In this paper, three kinds of nanofibers, carbon fiber (CFRP), glass fiber (GFRP), and aramid fiber (AFRP) are used to make concrete bridges. Loading experiments are also carried out with different degrees of load on the bridge and 100 experiments on the error interval. The experimental results show that the displacement is proportional to the load to a certain extent. The carbon fiber concrete has a stronger positive correlation than the other two materials. Its finite element simulation experimental data have 78% error difference between 0 and 10, while the other two are around 40%.

In order to ensure the safety of the subway in the process of excavation, combining with the geographical location and geological situation of the project, with the high-precision automatic monitoring system, it sets up the corresponding monitoring points to protect and monitor the subway near the project, so as to ensure the normal construction of the foundation pit Iron impact is minimized. The monitoring results were in line with the requirements of the specification, providing guarantee for the subsequent construction.

ABSTRACT. In order to calculate the static load model and the live load of the bridge pile foundation on the validation of the simplified, with a single pile in clay under vertical cyclic loads on the pile top settlement and axial force of pile model test, the effect of vertical cyclic loading condition, bearing capacity and settlement of single pile. The influence of cycle times on the settlement of pile head and the axial force of pile body is put forward, which provides the data support for the evaluation of the bearing capacity of the later bridge pile foundation.1 INTRODUCTIONIn the light of the scholars at home and abroad, some researches have been carried out on the settlement, bearing capacity and time effectiveness of single pile under vertical cyclic loading [1][2][3][4][5][6][7], some common test methods have been developed, and they have produced a series of fruitful theories, these studies showed that the bearing capacity of the pile under vertical cyclic loading was different from the static calculation. Most of the existing researches were carried out for the construction projects, marine engineering and plant loads, there were few researches on the effects of live load on the foundation of the highway, the action characteristics of the pile foundation, the live load, the frequency and the frequency of the pile, and the influence on the settlement and the axial force of the pile. Because of the concealment of the soil and the working characteristics between the piles and the soil, there were still many complex problems in the study between piles and soil, it was urgent to carry out deep and systematic research on the bearing capacity of highway bridge piles under different static loads and live loads.In this paper, the calculation model of static load and live load on the simplified bridge pile foundation was the loading condition, The settlement of pile foundation and the axial force characteristic of pile body were studied. It provided data support for bridge bearing capacity test during operation.