考虑二次震害的单层砖柱厂房震害快速评估新方法研究

发布时间：2018-05-16 23:03

本文选题：单层砖柱厂房 + 二次震害　；参考：《土木工程学报》2015年07期

【摘要】：单层砖柱厂房因其造价低、施工简单,目前仍是我国中小型企业生产用房常用的结构形式之一。历次震害表明,单层砖柱厂房在强烈地震动作用下易发生不同程度的破坏,并造成较大的经济损失。因此有必要对单层砖柱厂房进行震害分析。本中首先将搜集到的海城地震、唐山地震、汶川地震及芦山地震中155个单层砖柱厂房震害实例作为样本,使用MATLAB软件回归得到单层砖柱厂房一次地震震害快速评估模型。随后,对回归分析中得到的5个主要震害影响因素进行组合,采用ABAQUS有限元软件建立32个厂房模型,同时考虑9种不同的二次地震序列,共288个工况进行时程分析,得到考虑二次震害的单层砖柱厂房震害样本,并根据二次震害样本回归拟合出考虑二次震害的单层砖柱厂房震害快速评估模型。最后基于VB6.0程序编译单层砖柱厂房震害快速评估程序。通过对震害快速评估模型进行修正和检验可知,所建立的震害快速评估模型具有较高的可靠性,可应用于工程实际。
[Abstract]:Because of its low cost and simple construction, monolayer brick factory building is still one of the common structural forms of production houses in small and medium-sized enterprises in China. The previous earthquake damage shows that the single-story brick column factory building is liable to destroy in different degrees under the strong ground motion and cause great economic losses. Therefore, it is necessary to analyze the earthquake damage of single-story brick column factory building. In this paper, the earthquake damage examples of 155 single-story brick column buildings collected from Haicheng earthquake, Tangshan earthquake, Wenchuan earthquake and Lushan earthquake are first taken as samples, and the rapid earthquake damage assessment model of single-story brick column factory building is obtained by using MATLAB software regression. Then, by combining the five main factors of earthquake damage obtained in regression analysis, using ABAQUS finite element software to establish 32 workshop models, and considering 9 different secondary earthquake sequences, a total of 288 working conditions were analyzed in time history. The earthquake damage samples of single-story brick column building considering secondary earthquake damage were obtained, and the rapid assessment model of single-story brick column building with secondary earthquake damage was fitted according to the regression analysis of the second earthquake damage sample. Finally, based on the VB6.0 program, the rapid evaluation program for earthquake damage of single-story brick column factory building is compiled. By modifying and testing the model of rapid assessment of earthquake damage, it can be seen that the established model has high reliability and can be applied to engineering practice.
【作者单位】：中国地震局工程力学研究所;中国地震局地震工程与工程振动重点实验室;
【基金】：地震行业科研专项(201508026-01,201508010-06) 国家自然科学基金重大研究计划(91315301-10)
【分类号】：P315.9;TU362

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