【摘要】 大型火力发电厂循环水取水管道及供排水管道的内直径(或边长)可达3～4m;在地震作用下,当这些管道位于液化场地内时,可能会出现"管道震陷"、"管道上浮"等震害.相关规范中,针对液化场地给出了消除"液化沉陷"的具体要求和相应措施,但未涉及场地液化后"管道上浮"问题.为了保证这些大直径管道的抗震安全性,相应的地基处理方案应能消除"管道震陷"和"管道上浮"等震害,同时还应符合"经济、可行"的原则.更多还原

【Abstract】 The conduit of circulating water system for large power plant can reach 3-4 m in inner diameter(or side length).For the buried conduit in liquefied soil,the seismic subsidence or floating response under earthquake action may appear.The control measures for eliminating the liquefaction settlement is proposed in the codes;but the calculation method of "floating response" for conduit in liquefied soil has not given.The foundation treatment scheme is applied to liquefied soil to ensure conduit security.The selected schemes should be able to eliminate earthquake damage of conduit seismic subsidence and conduit float upward;also they are economically feasible.更多还原