吐鲁番苏公塔的抗震性能初步分析
|
摘要
苏公塔是新疆蕴含维吾尔族文化风采的全国重点保护文物。开展苏公塔抗震性能研究工作对于保护古建筑将起到积极作用。根据理论计算与脉动测量得到的自振周期与振型,采用振型分解法计算苏公塔的水平地震作用,采用冲量法试讨论其竖向地震作用。依据结构在不同概率水准地震作用下的效应,分析苏公塔的抗剪、抗弯性能及抗变形能力。水平地震作用下的计算结果表明,苏公塔的抗剪能力高于抗弯能力。按照6度、7度设防水准计算表明,塔截面强度满足小震和基本满足中震作用时抗震要求及弹性抗震变形要求;塔截面强度在大震作用(7度设防)时不满足抗震要求。竖向地震作用对塔的影响计算表明,塔在受到8度竖向地震作用时将出现不利振动状态,结构端部可能出现拉力。根据结构分析提出简单、可行的抗震加固与保护文物的建议。
Emin Minaret is the important historical building under the state protection because of its distinctive Uygurs cultural art.Study on seismic behavior of the Emin Minaret can produce active effect to protect the historical buildings.The intrinsic period and vibration mode shapes of the Minaret are obtained from the theoretical calcula- tion and pulse measurement.Seismic response of the Minaret under the horizontal earthquake action can be got by the vibration mode decomposition.And its seismic response under vertical earthquake action can be got by the im- pulse method.The paper analyses the anti-shearing,anti-bending and anti-distortion behavior of the Minaret on the basis of the structure analysis under the different probability levels of the earthquake.Then the simple and feasible advises are put forward to the aseismic reinforcement and protection of the historical Minaret.
Emin Minaret is the important historical building under the state protection because of its distinctive Uygurs cultural art.Study on seismic behavior of the Emin Minaret can produce active effect to protect the historical buildings.The intrinsic period and vibration mode shapes of the Minaret are obtained from the theoretical calcula- tion and pulse measurement.Seismic response of the Minaret under the horizontal earthquake action can be got by the vibration mode decomposition.And its seismic response under vertical earthquake action can be got by the im- pulse method.The paper analyses the anti-shearing,anti-bending and anti-distortion behavior of the Minaret on the basis of the structure analysis under the different probability levels of the earthquake.Then the simple and feasible advises are put forward to the aseismic reinforcement and protection of the historical Minaret.
引文
[1] 罗哲文.中国古塔[M].北京:中国青年出版社.1985． 320-321．
[2] 祁小山,王博等,编.西域国宝录[M].乌鲁木齐:新疆人民出版社.1999．
[3] 李德虎,等.砖石古塔动力特性的试验研究.工程抗震[J].1990,9(3) :34-P36．
[4] 徐永基.建筑结构设计计算及实例(上册)[M].海口:海南出版社.1993:6-10．
[5] 尹力峰,宋立军,杨章.框架结构的自振频率和地震作用的计算问题.内陆地震[J].1995,9(3) :266-268
[6] CBJ11-89,建筑抗震设计规范[S].
[7] 林建生.泉州古石塔的抗震分析[J].工程抗震.1990,9:(3) :40-42．
[8] GBJ3-88,砌体结构设计规范[s].
[9] 王光远,等译.结构动力学[M].北京.科学出版社,1981． 1-10．
[10] 钱培风.结构抗震分析[M].北京:地震出版社.
[11] 李雄飞.城市规划与古建筑保护[M].天津:天津科学技术出版社,1985． 28-30．
[2] 祁小山,王博等,编.西域国宝录[M].乌鲁木齐:新疆人民出版社.1999．
[3] 李德虎,等.砖石古塔动力特性的试验研究.工程抗震[J].1990,9(3) :34-P36．
[4] 徐永基.建筑结构设计计算及实例(上册)[M].海口:海南出版社.1993:6-10．
[5] 尹力峰,宋立军,杨章.框架结构的自振频率和地震作用的计算问题.内陆地震[J].1995,9(3) :266-268
[6] CBJ11-89,建筑抗震设计规范[S].
[7] 林建生.泉州古石塔的抗震分析[J].工程抗震.1990,9:(3) :40-42．
[8] GBJ3-88,砌体结构设计规范[s].
[9] 王光远,等译.结构动力学[M].北京.科学出版社,1981． 1-10．
[10] 钱培风.结构抗震分析[M].北京:地震出版社.
[11] 李雄飞.城市规划与古建筑保护[M].天津:天津科学技术出版社,1985． 28-30．
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心