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一.绪言 本学报第3卷第4期载有潘家錚同志的“彈性地基上的阶形梁”一文。在这篇論文中,潘问志巧妙地將結構力学中“跨变梁”(Span Change Beam)桿件常数的观念,推广用于彈性地基上的等截面直梁,因而得出在文克尔(Winkler)假定的某础上,簡捷地解决彈性地某上阶形梁分析这一复杂的实用問題,使共計算简易如同一“連續跨变梁”之分析,实是值得称道的。利用文中提供的函数表,各桿件常数的計算已可充分簡化。誠
I. INTRODUCTION In the fourth issue of Volume 3 of the Journal, Comrade Pan Jiafan’s article on “The Beam on the Elastic Foundation” is included. In this paper, Pan Wenzhi cleverly used the concept of Span Change Beam in structural mechanics to promote the use of equal-section straight beams on elastic foundations. On the basis of the assumption of (Winkler), it is commendable to simply solve the complex practical problem of the analysis of an upper-order beam in the elasticity, and to make the co-calculation as an analysis of the “continuous cross beam”. Using the function table provided in the article, the calculation of the rod constants can be fully simplified. Cheng