摘要
以某城市综合体实际工程为背景,研究扭转不规则等超限工程的破坏机理和应对措施,并基于抗震性能提出工程设计方法。该工程为大底盘双塔楼偏置超长复杂高层建筑,存在扭转不规则、楼板不连续、竖向体型收进、局部穿层柱、双塔楼结构及塔楼偏置等不规则项,采用基于动力非线性性能的抗震设计方法,利用多种软件进行了小震下的反应谱分析和弹性动力时程分析、中震弹性和不屈服的承载力复核,以及大震下的弹塑性动力时程分析。结果表明:该结构抗震性能良好,结构体系合理可行,能够达到小震弹性、中震可修、大震不倒的抗震性能目标。由于该结构超长,通过温度作用间接效应分析,计算超长结构在温度影响下产生的温度应力,并根据温度应力计算配筋,与结构荷载效应组合,解决了超长混凝土结构温度应力影响等问题。
In order to study the failure mechanism and response measures of exceeding limit engineering such as torsion irregularity,as well as design methods based on seismic performance,this project taking a complex high-rise building with a large chassis,double tower,and offset length,which is an actual urban complex project as the background.This building has irregular items such as torsional irregularity,floor discontinuity,vertical shape retraction,local through floor columns,double tower structure and tower offset.The dynamic nonlinearity performance-based seismic design method is adopted,and a variety of software are used to carry out the response spectrum analysis and elastic dynamic time history analysis under small earthquakes,the review of elastic and non yielding bearing capacity under medium earthquakes,and the elastic-plastic dynamic time history analysis under large earthquakes.The results show that the seismic performance of the structure is good,the structural system is reasonable and feasible,and can achieve the seismic performance goal of small earthquake elasticity,medium earthquake repairability and large earthquake.Due to the super long structure,through the indirect effect analysis of temperature action,the temperature stress of super long structure under the influence of temperature is calculated,and the reinforcement is calculated according to the temperature stress,which is combined with the structural load effect,to solve the problems such as the influence of temperature stress of super long concrete structure.
作者
王江龙
高扬
赵冬
王丽梅
张晨
WANG Jianglong;GAO Yang;ZHAO Dong;WANG Limei;ZHANG Chen(Gansu Institute of Architectural Design and Research Co.,Ltd.,Lanzhou 730030,China;School of Science,Xi'an University of Architecture and Technology,Xi'an 710055,China)
出处
《甘肃科学学报》
2024年第5期110-116,124,共8页
Journal of Gansu Sciences
基金
国家自然科学基金青年科学基金项目(52008332)
甘肃省建筑设计研究院有限公司科技研发项目(KY2022-JG02)。
关键词
超限高层建筑
双塔楼
抗震性能设计
动力弹塑性分析
温度应力
Transfinite high-rise building
Double towers
Seismic performance-based design
Dynamic elastoplastic analysis
Temperature stress
