论文部分内容阅读
《混凝土结构设计规范》(GBJ10-89)中第7.2.2条规定:“钢筋混凝土简支梁的下部纵向受力钢筋伸入梁的支座范围内的锚固长度l_(as)应符合下列条件:①当V≤0.07f_cbh_o时,l_(as)≥5d;②当V>0.07f_cbh_o时,月牙纹钢筋l_(as)≥12d;光面钢筋l_(as)≥15d。”由此可以看出,钢筋混凝土简支梁中受力钢筋在支座范围内的锚固长度l_(as)是由设计人员通过计算确定的。同时,规范也给出了纵向受拉钢筋的最小锚固长度(表1)。
Section 7.2.2 of the “Code for Design of Concrete Structures” (GBJ10-89) stipulates: “The anchorage length l_(as) of the lower longitudinal force-reinforced steel bar of the reinforced concrete beam extending into the support of the beam shall meet the following conditions: : 1 When V ≤ 0.07f_cbh_o, l_(as) ≥ 5d; 2 When V > 0.07f_cbh_o, crescent reinforcing bar l_ (as) ≥ 12d; smooth reinforcing bar l_ (as) ≥ 15d." This shows that The anchorage length l_(as) of the stressed steel reinforcement in the reinforced concrete simply supported beam is determined by the designer by calculation. At the same time, the specification also gives the minimum anchorage length of the longitudinal tension reinforcement (Table 1).