The generic adaptive software architecture style is studied. Through the analysis of the basic characteristics of adaptive software architecture, the generic framework for adaptive software architecture is extracted. The integrated reference model of adaptive software architecture (ASA-IRM) is proposed based on multiview modelling theory. The rules of model mapping and evolution in ASA-IRM are discussed. The algorithm of model mapping consistency is proposed based on metamodelling and graph transformation theories. Finally, an integrated support environment for ASA-IRM is developed. The adaptive software architecture can be used in the development of complex software system, especially in open, networked environment.