Practical Base Isolation for Masonry Residential Buildings

基础隔震系统在结构中的应用为抗震提供了一种很好的选择。目前已有许多基础隔震系统，但尚未开发出一种经济有效的住宅隔震系统。拟议研究的目的是确定和评估使“砂缝”隔离方案在砖石住宅抗震设计中有效和可行所需的物理特性。砂缝的基本思想是用一层薄砂将墙体与基础分开，在砌体墙体的底部形成一个相对较弱的摩擦面。这种连接将结构与强烈的地面运动隔离开来，其方式与目前在大型结构中实施的更复杂的基础隔离机制大致相同。虽然砂缝方法已经在中华人民共和国（PRC）非常有限的基础上引入，但这种机制的最佳特性尚未确定。

The application of base isolation systems to structures provides an excellent alternative for seismic protection. Many base isolation systems are available but an economic and effective system has not been developed for residential structures. The purpose of the proposed research is to identify and evaluate the physical characteristics that are required to make a "sand-joint" isolation scheme effective and practicable for a seismic design of masonry dwellings. The basic idea of the sand-joint is to form a relatively weak frictional plane at the base of a masonry wall by separating the wall from the foundation with a thin layer of sand. This joint isolates the structure from strong ground motion in much the same manner as do more sophisticated base isolation mechanisms currently being implemented in larger structures. Although the sand-joint approach already has been introduced in the Peoples Republic of China (PRC) on a very limited basis, the optimal characteristics of this mechanism have not yet been determined.