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例题:有一单跨简支梁,两端支承于砖墙上。梁净跨度6 m,两端支承长度为240mm,梁上搁置板,板传给梁的均布荷重为2100kg/m,单跨简支梁见图1,试计算此梁。(例题中[……]为解释计算内容,正式计算时可不要)(一)选用梁的材料用150号混凝土和Ⅰ级钢筋[选用梁的材料,一方面应根据施工时能取得什么标号的材料;另方面要考虑梁的跨度、所受荷重等因素。本例中因梁跨度不太大,荷重也不重,初步选用
Example: There is a single span simple beam with both ends supported on a brick wall. The beam has a net span of 6 m and the length of support at both ends is 240 mm. Shelves are placed on the beam and the uniform weight of the beam transmitted to the beam is 2100 kg/m. The single-span beam is shown in Figure 1 and the beam is calculated. (Examples [...] explain the content of the calculations, but they may not be formally calculated.) (1) The materials used for the beams are selected from No. 150 concrete and I-grade steel. [Material selection is based on the material used. Materials; on the other hand, factors such as the span of the beam, the load, etc., should be considered. In this case, because the span of the beam is not too large and the load is not heavy, it is initially selected.