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前言用空间四面体有限单元法计算拱坝,根据现有资料分析,是与实际情况比较符合,精度较高,适应性较强的一种方法。但目前尚有两个较难解决的问题:一是从划分单元到坐标计算、结点荷裁计算等一系列输入数据准备尚需用手摇计算机或计算器计算,工作量很大,耗时很多,电算后计算成果的整理也较繁复;二是受到机器容量的限制,进一步提高精度有困难,因此目前还未能普遍推广。随着我国电子计算技术的发展和引进国外先进技术,机器
Preface The finite element method of tetrahedron space arch dam calculation, based on existing data analysis, is more consistent with the actual situation, high precision, adaptability of a method. However, there are still two problems that are difficult to be solved. First, a series of input data preparation, such as division of units to coordinate calculation and calculation of node load, need to be calculated by a hand-held computer or a calculator. The workload is large and time-consuming A lot of calculation after calculating the calculation is also more complicated; the second is subject to the limitations of the machine capacity to further improve the accuracy of the difficulties, it has not yet widely promoted. With the development of China’s electronic computing technology and the introduction of foreign advanced technology, machines