The Stiffness Degeneration's Experimental Study And Application Method's Analysis In Frame-Shear Wall Structure On Hollow Shear Wall Of Reinforced Concrete

Since 1990s, our country's people have been requiring more and more dwelling houses because of the performance of the settling residence project and the developing of the comfortable residence. At the same time, the Sustainable Development is fully carried out, so material reform on walls and energy saving construction has been performing in the civil engineering field. Based on the current of the dwelling houses' development in the future, it's proposed that sub-high rise residences, whose structure models are either frame-shear wall or all shear wall, will be more reasonable than other types. The traditional R.C. shear walls can meet the capability of bearing vertical loads, but they have very poor ductility, and belong to brittle structure. Besides, they are not fit to the standard of energy saving. Under these reasons, the hollow shear walls of reinforced concrete are advanced. They are one kinds of energy saving and ductile shear wall structures, for they have a few virtues, such as good energy saving capacity, small self-weight, small stiffness and good ductility.This subject focuses on the stiffness degeneration's experimental study and application method's analysis in frame-shear wall structure on hollow shear wall of reinforced concrete, and includes three aspects. First, it studies the static experimental study on hollow shear walls of reinforced concrete. Its aim is to know hollow shear-walls' performance whose ratio of shear span to effective depth of section is between 1 with 2, based on the studies of ones whose ratio of shear span to effective depth of section is between less than 1. By low-cycle and reverse horizontal loading test, their properties, including with strength property, deformation property and energy property, are studied. The result is that R.C. hollow shear-walls' bearing capacity and ductility property are improved, compared with the traditional R.C. shear walls. Second, R.C. hollow shear-walls' stiffness degeneration is studied. Through the data obtained from the experiments, hollow shear-walls' equivalent stiffness degeneration and remove stiffness degeneration formulas are advanced. At the same time, formulas to calculate character stiffness and method to confirm restoring force model also be proposed. These are important references to thewhole process analysis of R.C. hollow shear-wall structure. Third, in elastic-plastic phase, taken into account R.C. hollow shear walls' stiffness degeneration, seismic action of frame-shear wall is made certain. This paper presents a method for calculating frame-shear wall structure in elastic-plastic phase based on traditional elastic calculating method. The reference is advanced to make sure the earthquake action of frame-shear wall structure with R.C. hollow shear-walls.