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基于单自由度体系的钢筋混凝土抗爆墙设计,是将抗爆房屋的结构按爆炸荷载传递路径进行逐个分解,再对分解后的构件进行单自由度体系的设计。同时,以构件支座转角位移为限制,确定构件的截面及配筋是否满足对变形的要求。对单自由度体系抗爆计算可采用数值求解的方法,其基本假定是加速度呈线性,求解的关键是时间增量的确定。本文通过工程实例,介绍正面承受爆炸荷载的钢筋混凝土前墙的计算方法,可为类似工程的设计提供参考。
The design of reinforced concrete blast walls based on single degree of freedom system is to decompose the structure of explosion-proof houses one by one according to the blast load transfer path, and then to design the single-degree-of-freedom system for the decomposed components. At the same time, the displacement of member support is limited to determine whether the cross-section of members and the reinforcement meet the requirements of deformation. The calculation of anti-explosion of single-degree-of-freedom system can be solved numerically. The basic assumption is that the acceleration is linear. The key to solve the problem is to determine the time increment. In this paper, through the engineering example, the calculation method of the front wall of reinforced concrete subjected to blast load front is introduced, which can provide references for the design of similar projects.