Study On Haunched Multi-ribbed Composite Wall Mechanical Properties

In order to accelerate the multi-ribbed structure system of large area tocommercialize a process. To realize the structure component, building component, itsoptimization and performance improvement so as to expand its scope of application.This article in view of multi-ribbed slab structure system of beam column with smallcross section characteristics, combined with the engineering example of haunch haunch,put forward a kind of multi-ribbed composite wall structure. The structure will be plusaxillary method applied to multi ribbed composite wall, using beam column haunchedstrut to change the whole structure mechanical characteristics, thus improving theoverall limit load and deformation capacity. Currently on the multi-ribbed compositewall with axillary treatment stress mechanism is not clear, plus axillary location andaxillary sizes using test method is more time consuming, so the pre-establishednumerical model analysis of experimental model of narrow range is a conservation ofresources necessary to study method.As the research to set the haunch braces for reinforcement model of multi-ribbedcomposite wall structure mechanical properties. In the first study theory and based onthe experimental study, the standard of haunch of multi-ribbed composite wall testdescription and understanding of its stress characteristics. Then the finite element modelis established and the model material properties, reliability is discussed. To ensure thecorrectness of model, using finite element analysis software to establish the model ofmulti-ribbed composite wall nonlinear analysis and test results were compared under thesame conditions, and gets the test piece accordant with the model, using the sameconditions of material parameters, a series of three different haunch size plus posterior axillary rib composite wall lateral stiffness of the structure and crack distribution aresimulated. Selection of the9frame standard multi-ribbed composite wall, consideringwall design ideas, technical requirements, failure characteristics, stress is easy togenerate weak zone and haunch of multi-ribbed composite wall effect of these factors,puts forward the multi-ribbed composite wall haunch ideas and develop haunchedscheme. Seek haunched optimal structure size.The numerical simulation results show that: setting the haunch braces to enha ncemulti ribbed composite wall lateral stiffness has a very good effect. When the diagonalmember is arranged in the rib beams, columns of plastic hinge in the intersection point,can effectively delay the whole member second line failure. Through the28p lus axillarymethod simulation that: haunch size of100mm x150mm, lateral resistance, crackresistance performance optimal.