With high - grade highway of city hengshui as study object , this paper run after , observed and studied to the pavement performance of the representational highway for a long time . by assessment and forecast , we ascertain the section in need of maintenance and constitute the corresponding maintenance measure , choose the west scheme of expense - effect , and then distribute the limited capital to the project with reason , supply credible foundation to improve the construction technique and management level of high - grade highway 本课题以衡水市92年以来投入运营的高等级公路为研究对象，选定有代表性的典型路段，对这些路段的路面使用性能进行长期跟踪及观测，通过对路面使用性能的评价和预测，确定需养护路段和制定相应的养护维修对策，选用费用-效果最佳的方案，并对项目合理分配有限的养护资金，为改善和提高高等级公路路面的施工技术及养护管理水平提供可靠的依据。
At the beginning of new century , with china entry to world trade organization , the synthesize resin industry of china facing challenge of globalization , at the same time , facing european , us and nearing country ' s invest in new petrochemical project goal on china market in recently . western country build huge size petrochemical plant with advanced technology will be operating ; the competition will be more seriously 新世纪之初，随着我国加入世界贸易组织，我国合成树脂工业面临经济全球化挑战，同时也面临周边及欧美国家一大批目标针对中国市场的新建装置先后投产，西方国家采用先进技术的特大型石化装置也将投入运营，世界市场竞争将更加激烈。
