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本学報第二卷第一期所載呂子華先生的“对称式斜頂披屋廠房排架的应力分析”一文,提出了一个新的簡便的分析方法,殊堪欽佩,惟文中尚有些缺陷及算誤,特予更正補充如下.原文第三節“曲桿形常數”的推求中,个別常數問的互等關係内,尚有下述兩項互等關係未列入内,似为疏忽,且致以後实例一内的算誤亦未能發現.今簡述如下:以上四值互等,由馬氏互等定理,原可一目了然,並非难事.故知文中式(8)实即式(13),而式(12)实即式(15).呂先生將共分別列出,实係重複.現再按文中導出諸值的公式形式予以証明如下:
The first article of the second volume of the journal contains the “Stress analysis of the trusses of a symmetric symmetrical roof dwelling house” in Mr. Lu Zihua’s first phase. A new simple analysis method is proposed, which is admirable. However, there are still some flaws in the article. The errors were corrected and added to the following corrections. In the third section of the original text, “curvature constants”, in the mutual relations among the individual constants, the following two reciprocal relations were not included. It seems to be negligence, and the subsequent arithmetic errors in Case 1 cannot be found. It is briefly described as follows: The above four values are mutually equivalent and can be seen at a glance by the Markov’s reciprocal theorem. It is not difficult to understand. That is, formula (13), and formula (12) is formula (15). Mr. Lu will be listed separately, the actual system is repeated. Now according to the formula derived from the value of the text form to be proved as follows: