Simulation Analysis On Basic Behavior Of High-Strength Concrete Shear Wall

High-strength concrete capable of providing high strength, high stiffness and well durability demand for high-rise, long-span and over-loading structures in modern civil engineering, represents the expected development tendency in the field of building materials. Shear wall as the primary lateral load resistant systems in tall buildings, if constructed with high-strength concrete, not only enhances structural stiffness and load capacity, but also reduces self-gravity and the cost of construction, which brings many economical and social benefits. The seismic performance of high-strength concrete shear wall needs to be well investigated.A lot of researches have been carried out on normal concrete shear walls at home and abroad, and design methods have been proposed accordingly. However the investigation on the seismic performance of high-strength concrete shear walls is rare so far. Computer simulative tests other than necessary experimental study can be adopted to examine the seismic performance of high-strength concrete shear wall, which both overcomes the weak points of experimental study and saves the cost of researches. So the computer simulation technique is applied to study the seismic behavior of high-strength concrete shear walls in this paper.According to the computer simulation analysis theory, through 3D finite-element method, the rectangular section high-strength shear wall is analyzed. Assuming space element with 8 nodes and 24 freedoms, this method considered the effect of concrete crush and the stress-softening, and solved the problem of the descending branch with displacement-controlled manner. This paper reveals the basic performance of high-strength concrete shear wall with simulation calculation using 3D finite-element method. Six groups ofsimulation analyses are carried out at high-strength concrete shear wall, which revealed the influence of concrete grades, the ratio of boundary longitudinal reinforcement to boundary element, the volumetric ratio of transverse reinforcement at the boundary element, the ratio of web vertical reinforcement, the ratio of web horizontal reinforcement and axial compression ratio on the load capacity and displacement of high-strength concrete shear wall.