[1]周 乾,闫维明,纪金豹.古建残损木梁受弯性能数值模拟研究[J].山东建筑大学学报,2012,(06):570-574.
 ZHOU Qian,YAN Wei-ming,JI Jin-Bao.Numerical simulation of bending performance of the unsound Chinese ancient wooden beam[J].Journal of Shandong jianzhu university,2012,(06):570-574.
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古建残损木梁受弯性能数值模拟研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2012年06期
页码:
570-574
栏目:
研究论文
出版日期:
2012-12-15

文章信息/Info

Title:
Numerical simulation of bending performance of the unsound Chinese ancient wooden beam
作者:
周 乾12闫维明2纪金豹2
1.故宫博物院 北京 100009;2.北京工业大学 工程抗震与结构诊治北京市重点实验室,北京 100124
Author(s):
ZHOU Qian12 YAN Wei-ming2 JI Jin-Bao2
1. Palace Museum, Beijing 100009, China; 2. Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China
关键词:
残损木梁古建筑受弯数值模拟ANSYS
Keywords:
unsound wooden beam Chinese ancient building bending performance simulation ANSYS
文献标志码:
A
摘要:
古建筑是我国珍贵的历史文化瑰宝。古建筑残损情况的准确分析和评估是科学、有效保护古建筑的前提和基础。文章采用数值模拟方法,研究了故宫东华门某残损三架梁在竖向荷载作用下的抗弯性能。结果表明:(1) 该三架梁在现有承载条件下的竖向变形、拉应力、压应力、弯应力满足相关规定,但是剪应力峰值超出《规范》许可范围,造成三架梁下侧水平裂缝扩展;(2) 三架梁底部的水平裂缝贯通横截面后,形成上下叠合梁,造成上段梁倾斜、歪闪,并在上段梁的跨中顶、底部产生拉、压破坏,从而加剧三架梁破坏。
Abstract:
Chinese ancient buildings are precious historic and cultural treasures. A precondition for scientifically and effectively protecting them is that their unsound statuses have to be precisely assessed. In this paper, bending performances of a 3-purlin beam in Donghua Rostrum in the Forbidden City under vertical loads was studied by simulation methods. Results show that: (1) under the present bearing conditions, vertical deformation, tensile, compressive and bending stresses of the beam qualify the demands of corresponding structural codes, however, its peak shearing stress exceeds the limit value; (2) the run-through of crack at bottom location of the beam makes itself a superposition one, which not only causes incline of the upper part as well as damage of both top and bottom parts for tensile and compressive stresses failure, but also aggravates damage of the whole beam.

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更新日期/Last Update: 2012-12-28