混凝土结构建筑物抗震加固强度测试仿真  

Strength Test and Simulation of Seismic Strengthening of Concrete Structures

作　　者：丁声荣[1] 霍艳华[1] 

机构地区：[1]南昌大学科学技术学院,江西南昌330029

出　　处：《计算机仿真》2017年第8期429-432,共4页Computer Simulation

摘　　要：对混凝土结构建筑物进行加固强度测试能够有效预防地震中建筑物的坍塌,减少地震中的人员伤亡数量以及经济损失。在进行建筑物的强度测试时需要计算出混凝土的摩擦力和压力,得到测试所需综合抗震指数。传统测试方法先计算出峰值地震加速度,实现对混凝土结构建筑抗震加固强度测试,但未得出加固后的综合抗震指数,导致测试准确度差的问题。提出基于有限元的混凝土结构建筑物抗震加固后的强度测试模型,先将扩展有限元理论和其子模型技术相融合,给出混凝土材料内裂纹萌生、扩展和最终的破坏形式,多面性角度出发计算混凝土结构建筑顶板、底板和侧墙等各部分的质量,给出地震土摩擦力和压力,得到加固后的综合抗震能力指数、受剪承载力,依据计算通用数值分析软件的验证算例,表明有限元模型的正确性。仿真结果表明,所提模型可以为混凝土结构建筑抗震设计提供有效的依据。A strength test model for seismic reinforcement of concrete structure construction is proposed based on the finite element. Firstly, the model integrates the extended finite element theory with the sub - model technology and gives out the crack initiation, extension, and final failure mode in the concrete material. Then, the each sectional quality of roof, baseboard, and flank of concrete structure construction from multi -faceted view is calculated, and the friction and pressure of earthquake earth are given out. Moreover,the comprehensive anti -seismic index and shear capacity after reinforcing is obtained. Finally, the verification computation example of software is analyzed according to the computation common numeric value to indicate the validity of finite element model. The simulation results show that the model can provide the effective basis for the anti - seismic design for the concrete structure construction.

关 键 词：混凝土 结构建筑 强度测试 

分 类 号：TU92[建筑科学—建筑设计及理论]