塔式起重机基于ANSYS的地震响应研究
发布时间：2019-01-27 08:26
【摘要】：塔式起重机是建筑行业中应用最为普遍,但却又是对地震最为敏感的一种施工设备,汶川地震后,人们对该类设备的抗震性极为关注,这也是震后大规模重建与地震频发矛盾下所必须考虑的。正基于此,本文从实际施工应用出发,对汶川地震中西安地区塔机的地震响应特性,应用ANSYS有限元分析软件进行了相关研究,并获得了以下几个方面的成果： (1)应用ANSYS软件,较详细的建立了塔机及其附着对象的有限元模型,为仿真研究奠定了坚实的模型基础； (2)附着塔受到建筑物的影响,动态与静态两种方式校核下,危险点的位置在较大概率下是不同的,而独立塔则相同,从而得出独立塔进行抗震设计时,乘以动态放大系数,按等效静力学校核即可,而附着塔必须进行动态校核才能发现薄弱点的结论,但是在较多情况下,人们忽略了对塔机的动态校核环节,正因如此,造成了地震中附着塔较多于独立塔发生倒塌； (3)附着塔一般最好附着于建筑物短轴上； (4)在地震突发时,若得知震中方向,则应使塔机起重臂指向或背离震中,也就是说,尽量使起重臂与塔机工作点和震中的连线平行,这样可使塔机受力较小,从而最大程度减轻伤亡,这也是此类突发事件下可行的有效应急方案之一。 (5)应用APDL语言及用户界面设计语言UIDL对ANSYS进行了二次开发,在经典模块下添加了塔机的专业化模块,实现了塔机有用户化界面的参数化建模,并对该模块进行了汉化。
[Abstract]:Tower crane is the most widely used construction equipment in the construction industry, but it is also the most sensitive construction equipment to the earthquake. After the Wenchuan earthquake, people pay great attention to the earthquake resistance of this kind of equipment. This is also a large-scale reconstruction and earthquake-prone conflicts must be considered. Based on this, this paper studies the seismic response characteristics of tower cranes in Xi'an area in Wenchuan earthquake by using ANSYS finite element analysis software. The following results are obtained: (1) the finite element model of tower crane and its attached object is established in detail by using ANSYS software, which lays a solid foundation for simulation research; (2) under the influence of the building, the location of the dangerous point is different under the high probability of the dynamic and static check, and the independent tower is the same, so the seismic design of the independent tower is obtained. Multiplied by the dynamic magnification factor, it can be checked by equivalent statics, and the attached tower must be dynamically checked to find a weak spot. But in many cases, people neglect the dynamic checking of the tower crane, which is why, The result of the collapse of the attached tower is more than that of the independent tower in the earthquake. (3) the attached tower is usually best attached to the short axis of the building; (4) in the event of an earthquake, if the direction of the epicenter is known, the lifting arm of the tower crane should be directed or deviated from the epicenter, that is to say, the lifting arm should be parallel to the working point and the line of the epicenter as far as possible, so that the force on the tower crane can be reduced. Therefore, it is one of the feasible and effective emergency solutions to minimize the casualties. (5) the second development of ANSYS is carried out by using APDL language and user interface design language UIDL. The specialized module of tower crane is added under the classical module, and the parametric modeling of tower crane with user interface is realized.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH213.3
本文编号：2416093
[Abstract]:Tower crane is the most widely used construction equipment in the construction industry, but it is also the most sensitive construction equipment to the earthquake. After the Wenchuan earthquake, people pay great attention to the earthquake resistance of this kind of equipment. This is also a large-scale reconstruction and earthquake-prone conflicts must be considered. Based on this, this paper studies the seismic response characteristics of tower cranes in Xi'an area in Wenchuan earthquake by using ANSYS finite element analysis software. The following results are obtained: (1) the finite element model of tower crane and its attached object is established in detail by using ANSYS software, which lays a solid foundation for simulation research; (2) under the influence of the building, the location of the dangerous point is different under the high probability of the dynamic and static check, and the independent tower is the same, so the seismic design of the independent tower is obtained. Multiplied by the dynamic magnification factor, it can be checked by equivalent statics, and the attached tower must be dynamically checked to find a weak spot. But in many cases, people neglect the dynamic checking of the tower crane, which is why, The result of the collapse of the attached tower is more than that of the independent tower in the earthquake. (3) the attached tower is usually best attached to the short axis of the building; (4) in the event of an earthquake, if the direction of the epicenter is known, the lifting arm of the tower crane should be directed or deviated from the epicenter, that is to say, the lifting arm should be parallel to the working point and the line of the epicenter as far as possible, so that the force on the tower crane can be reduced. Therefore, it is one of the feasible and effective emergency solutions to minimize the casualties. (5) the second development of ANSYS is carried out by using APDL language and user interface design language UIDL. The specialized module of tower crane is added under the classical module, and the parametric modeling of tower crane with user interface is realized.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH213.3
【引证文献】
相关博士学位论文 前1条
1 金玉龙;集装箱岸桥结构的抗震分析与隔震研究[D];上海交通大学;2012年
相关硕士学位论文 前1条
1 肖鹏;塔式起重机地震响应分析[D];大连理工大学;2012年
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