Applied Mechanics and Materials Vol. 482

Abstract: The siding insulated wall and The precast shear wall are two researching themes which are faced in the current development of structure construction in China .And they are tends to mature now .However, the other new problem is proposed that whether it is possible to combine them to be a single one with a new structure form, which defined as insulated shear wall.

Abstract: Through the experiments of four concrete composite slabs under static loading to compare their flexural properties (deflection, bearing capacity, failure mode), this paper discusses the influence of composite slabs flexural behavior on different length of additional bars and sectional effective height. The results showed that they will improve the bearing capacity effectively by reasonably increasing the sectional effective height and controlling the length of additional bars.

Abstract: In this paper, ABAQUS finite element analysis software was used to do the following research of the steel tube filled with steel-reinforced concrete composite column. On the basis of past research, simulate axial compression under normal temperature and after the high temperature. And derivate the theoretical formula of the axial compressive bearing capacity under normal temperature and after high temperature based on the general theory. The result shows that the simulation value and the calculate value are in good agreement with each other.

Abstract: Based on the experimental study of shear strengthened of reinforced concrete rectangular beam strengthened by high-strength steel wire mesh and polymer mortar , the finite element extended analysis was used. The finite element analysis software showed that with the increasing of the strand dosage and reinforcement strand length,the shear strength and stiffness of strengthened members improved . However,with the increasing of shear span ratio , the shear strength and stiffness reduced obviously .

Abstract: Uniaxial dynamic compression tests were carried out on the triaxial testing machine to investigate the effect of noncyclic variable amplitude load. The characteristic of steel fiber concrete and differences among static uniaxial loading testing and dynamic uniaxial testing were studied systematically. It is shown that both the strain and the stress are directly proportional to the cycle frequency. Meanwhile, as the cycle amplitude increases, the irreversible plastic deformation increases gradually. And increasing the strain ranges, the stress strain curve becomes sparser. The comparison tests indicate that the peak stress relies on the loading modes. Under noncyclic variable amplitude load, the peak stress is higher than that of the static uniaxial load testing and the dynamic uniaxial testing, but the peak stress of the type corresponding to different frequency shows no evident difference.

Abstract: The cone penetration test (CPT) for loess-like silty clay soil in western Henan province was done to obtain the tip resistance and sleeve friction. Then, the relationship of CPT and physico-mechanical parameters of loess-like silty clay soil was analysis. At last, the empirical model for physico-mechanical parameters of loess-like silty clay soil in western Henan province was established. The physico-mechanical parameters of loess-like silty clay in western Henan province could be calculated by sing the empirical model from CPT, including water content, void ratio, plasticity index and compressibility coefficient. The results provide the foundation for reliability analysis of parameters of loess-like silty clay soil in geotechnical investigation, design and construction.

Abstract: Structural members are vulnerable to be damaged under the impact loads. According to traditional design methods, the impact load is seldomly considered. However, recently this situation is changed gradually. In view of this, impact-resistant performance of a new composite protective device was analyzed. A reinforced concrete beam with composite laminates, which was fixed at one end and hinged at the other end, was studied. Totally, the four cases including the unprotected, the rigid, the flexible and the composite protective measures were considered. The protective effects of the different measures can be compared by observing the strain, the displacement, the acceleration and the impact force of the target beam. Simulation results show that the composite protective measure can improve the impact-resistant effect of the target beam significantly and its dynamic response is suppressed effectively.

Abstract: Nano material is a new type of multi-functional materials, this article simply introduces the development present situation, performance and preparation method, and application in the aerospace field.

Abstract: For the study of eccentrically loaded GFRP tube columns filled with reinforced concrete, simulations were made with 21 specimens to study their load-displacement curves, treat concrete strength and eccentric load as main parameters.