混凝土抗爆墙防护性能的改进

发布时间：2018-02-24 16:00

本文关键词： 安全工程混凝土抗爆墙抗爆性能数值模拟防护动力响应　出处：《安全与环境学报》2017年01期 　论文类型：期刊论文

【摘要】：借鉴国外模块化钢结构抗爆墙,根据我国当前工程实际情况,提出对传统混凝土抗爆墙进行改进的方案,以提高其安全防护性能。基于GB 50779—2012、SH/T 3160—2009的简支梁计算模型,对传统截面混凝土抗爆墙与新型抗爆墙的抗爆性能进行分析比较。就规范主要检验的变形指标,从理论分析和数值模拟两方面,对新型抗爆墙的抗爆安全性能进行了分析,并用经验公式及离散化求解方法对模拟结果进行了检验,确保了计算结果的可信性。结果表明,该改进方案是可行的,它能有效提高抗爆墙的安全防护性能。改进后的抗爆墙拥有更大的抗弯承载力,能够减小爆炸冲击时所产生的变形。波段高度越大,承载能力越高,刚度越大,跨中位移越小。改进方案具有良好的经济性,在设计承载力相同的情况下,新型抗爆墙消耗材料较少,并能减少因制作木模板而对环境造成的破坏。
[Abstract]:Referring to the foreign modularized steel structure anti-detonation wall and according to the actual engineering situation of our country, this paper puts forward a scheme to improve the safety and protection performance of the traditional concrete anti-explosion wall, based on the calculation model of simply supported beam based on GB50779-2012SHR / T3160-2009. This paper analyzes and compares the anti-explosion performance of the traditional concrete anti-explosion wall and the new anti-explosion wall, and analyzes the anti-explosion safety performance of the new anti-explosion wall from the two aspects of theoretical analysis and numerical simulation. The empirical formula and discretization method are used to test the simulation results, which ensure the credibility of the results. The results show that the improved scheme is feasible. It can effectively improve the safety and protection performance of the anti-explosion wall. The improved anti-explosion wall has greater flexural bearing capacity and can reduce the deformation caused by explosion impact. The higher the wave band height, the higher the bearing capacity and stiffness. The smaller the mid-span displacement, the better the economy of the improved scheme. Under the same design bearing capacity, the new anti-explosion wall consumes less materials and can reduce the damage to the environment caused by making wood formwork.
【作者单位】：中石化上海工程有限公司;
【分类号】：TE687

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