基于ANSYS的素土坯墙体抗震性能影响因素分析
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摘要
针对素土土坯墙体的抗侧承载力和变形能力影响因素,采用数理统计理论中的正交试验因素分析方法,对素土坯墙体的静力弹塑性有限元非线性数值模拟计算结果进行了对比分析。研究了素土坯墙体厚度、洞口尺寸和竖向载荷对墙体抗侧承载力和变形能力影响程度。结果表明:未开孔的素土坯墙体,墙体厚度和竖向压应力对墙体的极限位移和极限载荷的提高具有同等重要的程度;开孔的素土坯墙体,墙体厚度、竖向压应力和开孔大小,对墙体的变形能力和抗侧承载力的提高程度相比较,竖向压应力的影响较大。
For the factors that influence the lateral resistance capacity and deformation ability of plain abode wall,the orthogonal test method in mathematical statistics theory was used for analyzing the nonlinear static elastic-plastic finite element numerical simulation of plain abode wall.The degree of thickness,hole size and vertical load of the wall impacting on lateral resistance capacity and deformation ability of plain adobe wall were studied.The results show that ① for the plain abode wall without hole,the wall thickness and vertical load have a great impact on the seismic performance;② for the plain abode wall with hole,compared with the degree of thickness,hole size and vertical load of the wall impacting on lateral resistance capacity and deformation ability of plain adobe wall,the vertical load has a great impact on the seismic performance.
For the factors that influence the lateral resistance capacity and deformation ability of plain abode wall,the orthogonal test method in mathematical statistics theory was used for analyzing the nonlinear static elastic-plastic finite element numerical simulation of plain abode wall.The degree of thickness,hole size and vertical load of the wall impacting on lateral resistance capacity and deformation ability of plain adobe wall were studied.The results show that ① for the plain abode wall without hole,the wall thickness and vertical load have a great impact on the seismic performance;② for the plain abode wall with hole,compared with the degree of thickness,hole size and vertical load of the wall impacting on lateral resistance capacity and deformation ability of plain adobe wall,the vertical load has a great impact on the seismic performance.
引文
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[3]葛学礼,王亚勇,申世元,等.村镇建筑地震震害与抗震减灾措施,建筑抗震加固改造技术与工程实践[M].昆明:云南大学出版社,2004:11-22.
[4]葛学礼,朱立新,王亚勇.村镇建筑震害与抗震技术措施[J].工程抗震,2001,3(1):43-48.
[5]孙柏涛,闫培蕾,胡春峰,等.汶川8.0级大地震极重灾区映秀镇不同建筑结构震害概述及原因简析[J].地震工程与工程振动,2008,28(5):1-10.
[6]阿肯江.托呼提,亓国庆,陈汉清.新疆南疆地区传统土坯房屋震害及抗震技术措施[J].工程抗震与加固改造,2008,30(1):82-86.
[7]Peter Walker.Characteristics of pressed earth blocks in compres-sion.11th international brick/block masonry conference[C]//Shanghai,China:Tongji University,1997,I:1-10.
[8]Peter Walker.Flexural bond strength of cement earth block masonry.11th international brick/block masonry conference[C]//Shanghai,China:Tongji University,1997,I:11-20.
[9]亓国庆.木柱梁—土坯组合墙体有限元数值分析[D].乌鲁木齐:新疆大学,2007.
[10]藤素珍,姜炳蔚,任玉杰,等.数理统计[M].2版.大连:大连理工大学出版社,1996:343-351.
[11]尚晓江,岳锋,赵海峰,等.ANSYS结构有限元高级分析方法与范例应用[M].北京:中国水利水电出版社,2006:169-179.
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