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第一节 平法梁标准构造详图的性质及特点 传统方法表达的梁设计图包括三种图样:(1)梁平面布置图及其上的梁构件索引号;(2)梁构件正投影图及其上的截面号;(3)梁截面图,其中,后两项习惯合称为梁大样图。由于一个完整的梁设计需要上述三种图样来表达,势必带有信息分散与信息重复两种缺陷。 传统梁设计图带有信息分散的缺陷是明显的,无须加以论证,但其带有信息重复的缺陷则有必要着重指出。例如:用传统表达方法时,在梁平面布置图上已经注明了梁的跨数和轴线跨度尺寸、其上次梁或其它集中荷载的定位尺寸、梁顶面标高等等,但在梁构件正投影图上却还要重复注一遍;又如,
Section 1 The Nature and Characteristics of the Standard Structure of the Pingfa Beam The beam design represented by the traditional method includes three kinds of patterns: (1) the beam floor plan and the beam member index number on it; (2) the orthographic projection of the beam member And the section number on it; (3) The beam section diagram, in which the latter two habits are collectively referred to as the beam large diagram. Because a complete beam design needs the above three kinds of patterns to express, it is bound to have two kinds of defects: information dispersion and information repetition. The defects of traditional beam design diagrams with scattered information are obvious and do not need to be demonstrated, but the defects with duplicate information must be highlighted. For example, when using the traditional expression method, the span number and axis span dimension of the beam, the positioning dimension of the last beam or other concentrated load, the elevation of the beam top surface, etc. have been indicated on the beam floor plan, but in the beam member Orthographic projections are repeated but again;