| 1. | The structure of the joint zone for cooperative system cable - stayed bridge and analysis of buffeting response
协作体系斜拉桥接头部位构造及抖振响应分析 |
| 2. | All results of analyzing , calculating and wind tunnel test indicate the vibration of yamen bridge pylon were rather serious , so it is necessary to control the wind - induced responses during construction
计算和风洞试验均表明，在风荷载作用下该桥塔横桥向抖振响较为严重，需对独塔施工阶段的横桥向抖振响应进行控制。 |
| 3. | One aspect about the studying of bridge buffeting is to simulating natural wind . if the result of its simulation is correct or not , it is directly concerned with veracity of bridge buffeting response
目前，对桥梁抖振研究的一个方面是风场模拟，风场模拟的结果是否与实际相符直接关系到桥梁抖振响应计算结果的准确度。 |
| 4. | In the paper , the computing method based on the non - steady wind pressure in frequency domain is applied to the calculation of roof structure of shanghai south railway station
摘要为了研究结构参数对复杂大跨空间结构风致振动的影响，以上海南站工程屋盖结构为例，利用基于非定常风荷载的风致动力响应频域分析方法，对结构的抖振响应进行参数分析。 |
| 5. | The method described in this paper may simulate real natural wind at the site of bridge using real wind velocity continuous records in short period and putting aside wind spectrum on the base of simulating merit or demerit , then buffeting response has been analysised
本论文在分析了已有风场模拟方法优缺点的基础上，没有采用已有的风谱，仅用桥址处短期的实际风速时程记录，进而模拟该桥处的实际风场，从而分析桥梁的抖振响应。 |
| 6. | The study on the buffeting responses and damping measures of bridge pylon during construction , including the flowing parts that were the theory of buffeting wind - induced responses , calculation of the buffeting responses of yamen bridge pylon , the theory of vibration control , the tunnel test study on buffeting responses and damping measures of yamen bridge pylon
桥塔独塔施工阶段抖振响应分析及制振措施的研究主要包括独塔施工阶段抖振响应的理论与计算、结构振动控制措施的理论、风洞试验研究等几个方面的内容。 |
| 7. | Abstract : based on thestatic wind force factors of a tower and on the root - mean - square of the buffetingdisplacement responses of the tower top , which are measured by wind tunnel tests inlaminar and turbulent field respectively , the static and buffeting internal forces of thetower bottom control sections under its design wind speed are obtained by linearsuperposition method and fem
文摘:基于均匀流和紊流风场中的桥塔模型风洞试验所测得的桥塔空气力静力系数及塔顶抖振响应的位移均方根，采用线性叠加法及有限元法反演，给出设计风速下塔底控制截面的顺风向静风及抖振内力。 |
| 8. | It is showed in buffeting analysis that the analysis results in time domain agree well with those in frequency domain . effect of pylon wind field can increase the lateral buffeting response of pylon . nonlinear factor can decrease the nature frequency of cable - stayed bridge , and can increase the vertical and torsional buffeting response
时域抖振分析结果表明：大跨度斜拉桥抖振的时域和频域分析方法具有较好的一致性；考虑桥塔风效应会显著增大桥塔的横桥向抖振响应；非线性因素会降低斜拉桥的自振频率，会增大斜拉桥的竖向及扭转抖振响应。 |
| 9. | Greatest virtue of the method is always combined with practicality ( wind record is real , site of record is real , the site of bridge is real ) , while the method for calculation of buffeting response is a ripe one ? inite method . the method for simulating natural wind field is convenience and workable
该法的最大特点是始终与实际相结合(风速记录是实际的、记录的地点是实际的、选择的桥梁是实际的) ，而分析抖振响应的计算方法是成熟的?有限元法，模拟风场的方法方便、可行。 |
| 10. | An efficient wind field simulation technique for wind - induced vibration analysis of long - span bridges is first introduced in this paper ， and the statistic characteristics of the simulated wind field are then discussed on this basis ， the time - domain expressions for the buffeting and self - excited forces acting on long - span bridges are further given a simple and practical method is presented for the non - linear parameter identification involved in the calculation of self - excited forces by using the above theory ， the wind field and aerodynamic forces acting on the hong kong ting kau bridge are obtained the time - domain buffeting response analysis of the bridge shows that the analytic results agree quite well with the experimental ones this indicates that the theory presented in this paper has reached a practical level
介绍了一种快速高效的用于大跨度桥梁风致振动分析的风场模拟方法，并对模拟风场的统计性质进行了讨论和验证在此基础上进一步给出了大跨度桥梁抖振力和自激力的时域表达方式，其中针对自激力计算中涉及的参数识别问题，提出了一种简单实用的非线性参数识别方法本文采用上述理论，获得了作用于香港汀九大桥上的风场和气动力，据此对大桥进行的抖振响应时域分析表明，计算结果与风洞试验结果吻合良好，说明文中述及的这套理论已达到实用的阶段 |
