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1、前言建于软弱地基上的构筑物,常因地基固结沉降和侧向变形的影响而发生变形。特别是桥台,作为台后填土桥梁的连接点,由于两者支承条件大不相同,最易发生问题,而在地震时,其状态就更难料定。 美国的公路桥常见的是以桁和桥台连成一
1 Foreword Structures built on soft foundations are often deformed by the consolidation and settlement of the foundation and lateral deformation. In particular, the abutment, as the connecting point of backfill bridges, is the most prone to problems due to the different supporting conditions between the abutments. In the event of an earthquake, the state of the bridge is more difficult to predict. The common highway bridge in the United States is the one with a truss and abutments