Chile, as a country with a long history of strong seismicity, has a record of both a constant upgrading of its seismic design codes and structural systems, particularly for bridges, as a result of major earthquakes. Recent earthquakes in Chile have produced extensive damage to highway bridges, such as deck collapses, large transverse residual displacements, yielding and failure of shear keys, and unseating of the main girders, demonstrating that bridges are highly vulnerable structures. Much of this damage can be attributed to construction problems and poor detailing guidelines in design codes. After the 2010 Maule earthquake, new structural design criteria were incorporated for the seismic design of bridges in Chile. The most significant change was that a site coefficient was included for the estimation of the seismic design forces in the shear keys, seismic bars, and diaphragms. This article first traces the historical development of earthquakes and construction systems in Chile to provide a context for the evolution of Chilean seismic codes. It then describes the seismic performance of highway bridges during the 2010 Maule earthquake, including the description of the main failure modes observed in bridges. Finally, this article provides a comparison of the Chilean bridge seismic code against the Japanese and United States codes, considering that these codes have a great influence on the seismic codes for Chilean bridges. The article demonstrates that bridge design and construction practices in Chile have evolved substantially in their requirements for the analysis and design of structural elements, such as in the definition of the seismic hazard to be considered, tending toward more conservative approaches in an effort to improve structural performance and reliability for Chilean bridges.

智利作为一个拥有强烈地震活动历史的国家，有记录表明，由于发生大地震，其抗震设计规范和结构系统（尤其是桥梁的结构系统）不断提高。智利最近发生的地震对公路桥梁造成了广泛破坏，例如桥面坍塌，较大的横向残余位移，剪切键的屈服和破坏以及主梁的未固定，这表明桥梁是高度脆弱的结构。这种损坏中的大部分可归因于施工问题和设计规范中的详细设计准则。在2010年莫尔地震之后，智利的桥梁抗震设计采用了新的结构设计准则。最重大的变化是包括了一个位置系数，用于估算剪力键，抗震筋和隔板中的抗震设计力。本文首先追溯了智利地震和建筑系统的历史发展，为智利地震法规的发展提供了背景。然后，它描述了2010年莫勒地震期间公路桥梁的抗震性能，包括描述了桥梁中观察到的主要破坏模式。最后，考虑到这些代码对智利桥梁的地震代码有很大的影响，本文将这些代码与日本和美国代码进行了比较。