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(一) 前言根据我国各地方志的記載,在全国約二千零六十余县中,一千六百余县有自己的地震記載,其中破坏性地震多达九百次左右。这表明我国广大地区受到強地震的威胁。目前我国的建設事业正在突飞猛进,巨大的工业厂房、高大的民用建筑、以及重要的水利交通工程也必須在地震烈度較高的广大地区不断地兴建。这就迫切要求工程地震工作者和工程师們迅速而又合理地解决以下三个問題:
(I) Preface According to the records of local chronicles in various parts of China, among the estimated 2,060 counties in the country, 1,600 counties have their own records of earthquakes, of which devastating earthquakes have amounted to about 900 times. This shows that vast areas of our country are threatened by strong earthquakes. At present, the construction of our country is making rapid progress. Huge industrial plants, tall civil buildings and important water conservancy transportation projects must also be continuously constructed in vast areas with high earthquake intensity. This urgently requires engineering earthquake workers and engineers to quickly and reasonably solve the following three problems: