引言对桥梁和结构工程界说来,最大的挑战或许莫过于合适地设计和建造一座跨越直布罗陀海峡的固定式大桥了。实际上这是一个意义双关的挑战,因为首先我们必须面对这个大工程的环境挑战。很显然,这样的工程的第一个要求,必然是桥下通航(目前每年通 Introduction Perhaps the biggest challenge for the bridge and structural engineering community is the proper design and construction of a fixed bridge across the Strait of Gibraltar. In fact, this is a dilemma of significance because firstly we must face the environmental challenge of this major project. Obviously, the first requirement of such a project must be navigable under the bridge (currently the annual pass