问题描述：
英语翻译
求英文翻译：
挡土墙是公路建设中广泛使用的一种支挡防护构造物.随着我国公路建设事业的发展,特别是高等级公路快速发展,常用的重力式挡土墙已不能满足公路建设的需求,有待研究和发展新的挡土墙类型.为在总体上实现公路挡土墙设计的科学性、客观性及合理性,需要引入先进的可靠性设计理论,逐步以概率极限状态设计法取代过去以工程经验为主的设计方法；同时,为保证挡土墙的施工质量,提高各类型挡土墙的施工技术水平,有必要规范挡土墙的施工工艺.
问题解答：
我来补答
Retaining wall is widely used in highway construction of a retaining protection installations. With the development of our country highway construction enterprise, especially the rapid development of highway and commonly used gravity retaining wall has can't meet the requirements of highway construction, to research and develop new type of retaining wall. Highway retaining wall design for overall implementation of scientific, objective and reasonable, need to introduce the advanced theory of reliability design, gradually replaced by probability limit state design method in the past mainly engineering experience design method; At the same time, in order to guarantee the construction quality of the retaining wall, improve the level of each type of retaining wall construction technique, necessary to standardize the retaining wall construction technique
