近年来随着结构设计和建造技术的快速革新，越来越多的结构向着高、大、柔的

近年来随着结构设计和建造技术的快速革新，越来越多的结构向着高、大、柔的方向发展，对风荷载作用的敏感性也日益增强，风荷载逐渐成为这些结构水平方向上的主要荷载，甚至起到了控制作用，因此研究结构在风荷载作用下的响应也越来越受科研工作者的重视。本文采用数值模拟方法，模拟了作用在某高层结构不同高度处的风荷载时程，然后对其进行顺风向风荷载作用下的动力时程分析。主要内容如下：
（1）高层建筑结构风荷载时程的数值模拟。基于的Davenport风速谱，运用随机过程理论，采用线性滤波法AR模型，利用MATLAB模拟了作用在结构各层上的顺风向风荷载时程，并且验证了模拟结果的合理性与准确性，为顺风向风荷载作用下时程分析奠定了基础。
（2）高层结构的模态分析。利用CSI公司有限元软件ETABS建立高层结构有限元模型，并对其进行模态分析，得到模型的各阶振型和自振周期等基本动力特性。
（3）顺风向风荷载作用下高层结构的线性时程分析。将风荷载时程导入有限元结构模型，对结构进行顺风向风荷载作用下线性动力时程分析，获得诸如加速度，位移，力等响应随时间变化的情况，分析高层结构风荷载作用下动力响应的特点。
（4）基于规范的等效静力风荷载作用分析。采用规范法计算了等效静力风荷载，然后对模型进行了静力分析，对比两种计算方法的结果，分析了造成差异的原因，并从中得到一些有益结论。其次，对结构风荷载做作用下的舒适性也进行了对比分析，以期为类似高层结构抗风初步设计提供一些借鉴。

結果 (英文) 1:

In recent years with structure design and built technology of fast innovation, increasingly more of structure toward high, and big, and soft of direction development, on wind load contains role of sensitivity also increasingly enhanced, wind load contains gradually became these structure level direction Shang of main load contains, even up to has control role, so research structure in wind load contains role Xia of response also increasingly by research workers of attention. By using numerical simulation methods, simulated the effect in a high-rise structure at different heights of the wind load time history, and then along the dynamic wind load time history analysis. Main content as follows:(1) the tall buildings due to wind load time-history numerical simulation. Davenport based on wind velocity spectrum, using the theory of stochastic processes, linear filtering method of AR model using MATLAB simulation of a role in the structure of the wind wind load time history, and verified the reasonableness and accuracy of results, for along-wind load time history analysis laid the Foundation.(2) the modal analysis of high-rise structure. Using finite element analysis software ETABS CSI companies to build high-rise structures finite element model, and modal analysis, the vibration model and dynamic characteristics of natural vibration period of Basic.(3) under along-wind loads linear time history analysis of tall building structure. Finite element model for wind load time history import, of along-wind loads to the structure of linear dynamic time-history analysis, such as acceleration, displacement, such as response time to changing circumstances, analysis of dynamic response of high-rise structure under wind load characteristics.(4) based on the specifications of equivalent static wind load analysis. Normative method for calculation of the equivalent static wind load, then the model is a static analysis and comparison of two methods for calculating results, analyzed the reasons for differences and get some useful conclusions. Secondly, the comfort of the structure under the action of wind load has also been compared to similar high wind resistance designed to provide some reference.

結果 (英文) 3:

In recent years, with the rapid development of structural design and construction technology, more and more structures are developing in the direction of high, large and flexible. The wind load is becoming more and more important. In this paper, the numerical simulation method, simulation of the process in the wind load of high-rise structure at different heights, and then the wind load under the action of dynamic time history analysis. The main contents are as follows:
(1) numerical simulation of wind load of tall building structures. Based on Davenport wind speed spectrum, by using the theory of stochastic process, using the AR model of linear filtering method, using MATLAB to simulate the process in the structure of each layer of along wind load, and verified the rationality and accuracy of the simulation results, the along wind loading time history analysis of the foundation. Modal analysis of the high rise structure of
(2). The finite element model of the high rise structure is established by CSI finite element software ETABS, and the modal analysis is carried out, and the basic dynamic characteristics of the model are obtained.
(3) linear history analysis of high-rise structures along wind load effect. The wind load time history into finite element structure model, the structure of along wind load under linear dynamic time history analysis, such as acceleration, displacement and force response along with the time change, analysis of high-rise structure wind load dynamic response characteristics. Analysis of equivalent static wind load acting on the base of standard equivalent static wind load (4). The equivalent static wind load is calculated by using the standard method. Then the static analysis of the model is carried out, and the results of the two methods are compared. The reasons for the difference are analyzed and some useful conclusions are obtained. SecondlyA comparative analysis is made on the comfort of the structural wind load, in order to provide some references for the similar structure of the wind resistance of tall buildings.