Repair and Rehabilitation Research for Seismic Resistance ofBuried Water and Sewer Lifelines

这项拟议研究的目标是 （1）提供有效的指导 被埋生命线的修复 抗震结构;（2） 提供技术信息， 评估现有 埋地生命线结构 地震环境;（3）开发和 记录成本效益方法， 修复和加强这些脆弱的 结构. 地下的生命线，包括水，下水道， 天然气和石油管道遭到破坏 严重地震，包括1985年 墨西哥城地震，1987年惠蒂尔地震， 加州地震和最近的 1989年10月17日洛马普列塔地震。 现有的埋在地下的生命线即使 在中等地震下。 因为 生命线对健康的重要性， 供应和公众安全，生命线 地震工程需要更大的 关注 由于目前还没有统一的地震记录 设计埋地救生索的规定， 水和污水管道，包括 相对较新的，已经建成， 最低地震保护。 损害 地震期间的供水和下水道管道 是不可避免的，经济损失可能 相当可观 有效的维修方法 紧急情况和永久 基础是这个项目要解决的问题。 由于更换所有 现有的供水和下水道管道非常 昂贵的，如果不是不可能的， 有效的康复技术， 拟由联合国开发计划署拟订的战略 研究是迫切需要的。

The objectives of this proposed research are to: (1) provide the effective guidance for repairs and rehabilitation of buried lifeline structures for seismic resistance; (2) provide technical information for realistic evaluation of the vulnerability of existing buried lifeline structures under various seismic environments; and (3) develop and document cost-effective methodologies for repairing and strengthening such vulnerable structures. Buried lifelines which include water, sewer, gas and oil pipelines have been damaged heavily by earthquakes including the 1985 Mexico City Earthquake, the 1987 Whittier, California Earthquake and the most recent Loma Prieta Earthquake of October 17, 1989. Existing buried lifelines are unsafe even under moderate earthquakes. Because of the importance of lifelines to the health, supply, and safety of the public, lifeline earthquake engineering needs greater attention. Since there is still no codified seismic provision to design buried lifelines, most water and sewer pipelines, including relatively new ones, have been built with minimum earthquake protection. Damages to water and sewer pipelines during earthquakes are unavoidable and economical loss can be substantial. Effective repair methods under emergency situations and for a permanent basis are to be addressed by this project. Due to the fact that the replacement of all existing water and sewer pipelines is very expensive, if not impossible, the development of effective rehabilitation techniques and strategies to be developed by the proposed research is urgently needed.