研究目的: 本文主要从对沥青混合料组成设计要求、理论分析、具体工程实例几方面来开展研究，研究嵌 挤紧密骨架型结构的粗细矿料级配较开级配与密集型悬浮级配的优异性。
研究结论:（1)规范的级配范围修改趋向也证明S型密实嵌挤型级配在一定程度上已被普遍接受;（2)沥 青混合料的组成设计应充分考虑原材料成本、混合料拌合生产成本、施工控制成本、后期养护成本,把沥青混 合料的综合施工成本控制到最低;（3)在容许情况下，应尽可能把粗骨料的矿料间隙率设计的小一些，通过调 整细骨料、填料调整混合料整体间隙率，优化混合料性能。（4)该研究成果适用于各等级公路工程、高速铁路 基床表层热拌沥青混合料的生产。
Research purposes ： On the basis of introducing the birth background of OPC technology，application modes of OPC technology and fundamental conceptions of OPC interface，and take the Building Management System ( BMS) of Guangzhou Higher Education Mega Center for example, this paper discusses the application of OPC technology in the fields of intelligent building 9 especially introduces the conceptions of OPC technology as a uniform communication method，to solve the problem in the data exchange between networks of different Fieldbus control system and improve the efficiency of data exchange in systems integration.
Research conclusions ： The OPC technology is an efficient and unifiable interface technology. The application of OPC makes it possible to process the different part of data with a unifiable method in the upper of integrated management system. The appears of technology of OPC makes it possible to exoteric, seamless system link of building automation control subsystem, hosting the maneuverability of systems, reducing the investment of system and reducing the time of development.
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