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关于钢筋混凝土梁剪力配筋设计,根据现行《公路桥涵设计规范》的规定,其一般做法是:首先分别求得支点及跨中的最大主拉应力,然后将二点间连成直线,做出总主拉应力图,以此作为配筋设计的依据。除梁中部一定范围内的主拉应力由混凝土承担外,其它梁段内又可以分成两种不同的情况,即跨径在13米及以下的受弯构件,主拉应力由混凝土、箍筋及斜筋共同承担;跨径大于13米的受弯构件,主拉应力由箍筋及斜筋承担。
As for the design of shear reinforcement of reinforced concrete beam, according to the current “code for design of highway bridges and culverts”, the general practice is as follows: First, calculate the maximum principal tensile stress of the fulcrum and the span respectively, and then connect the two points in a straight line The master pull stress map, as a reinforcement design basis. In addition to the central part of the beam within a certain range of the main tensile stress borne by the concrete, the other beam segment can be divided into two different situations, namely the span diameter of 13 meters and below the flexural members, the main tensile stress from concrete, stirrups and Oblique tendons shared; span greater than 13 meters of flexural members, the main tensile stress by stirrups and oblique tendons to bear.