诸城兴华大厦双塔结构设计分析

发布时间：2018-11-20 21:23

【摘要】：多塔楼结构属于复杂高层建筑结构，通常建筑高度大、体型大，结构的规则性会很大程度上影响到其受力性能。在水平地震和风荷载作用下，多塔楼通过下部连接的裙楼相互影响，其设计工作既要遵守一般高层结构的设计要求，又要与其自身的特点相适应。多塔结构在我国出现时间短、发展迅速，设计规范中关于此类结构形式的规定不够详尽，设计人员不熟悉设计方法和相关技术要求。本文针对一双塔结构的设计实例，完成其主要的设计过程，并对设计过程进行了研究和对比分析。（1）多塔结构一般都带有大底盘，设计过程中需要确定嵌固端位置。裙楼以及地下室设置的不同对于上部结构的计算分析有明显的影响。嵌固端起到约束上部结构主体的作用，本文分析了影响嵌固端嵌固作用的若干因素。（2）多塔结构体型大，结构布置与受力复杂，地基沉降差异大。本文分析了在保证结构整体性的前提下，避免结构裂缝产生、协调结构沉降差异的方法。（3）多塔结构整体布置和抗侧力构件布置的规则性对于结构整体和构件受力性能有很大影响。本文通过工程实例说明了对结构平面布置和构件布置的规则性分析方法以及分析内容，包括结构位移、抗侧移刚度以及周期分析等。（4）结构整体稳定性分析。多塔楼结构体型大，自身重量大，在结构布置存在偏心的情况下，重力作用下的二阶效应会很明显，本文分析了结构二阶效应的相关指标刚重比，通过调整结构布置影响刚重比指标，把结构二阶效应控制在比较小的程度，避免结构发生整体稳定破坏。本工程双塔结构属于大底盘多塔结构，其内力和变形分析要求高，传统的手工计算方法不能适应其对计算精度的要求，本文采用SATWE和PMSAP软件进行了计算分析并进行对比，可以保证计算结果的准确性。随着有限元理论的不断发展，，计算软件不断成熟，其功能越来越强大，设计人员需理解软件的工作原理，掌握好软件的使用方法，才能更好地做好结构设计工作。
[Abstract]:The multi-tower structure belongs to the complex high-rise building structure, usually the building height is large, the size is large, the structure regularity will affect its mechanical performance to a great extent. Under the action of horizontal earthquake and wind load, the design work of multi-tower is not only in accordance with the design requirements of general high-rise structures, but also in accordance with its own characteristics. Multi-tower structure appears in our country for a short time and develops rapidly. The design specification about this kind of structure form is not detailed enough, and designers are not familiar with the design method and related technical requirements. In this paper, the main design process of a double tower structure is completed, and the design process is studied and compared. The main results are as follows: (1) the multi-tower structure usually has a large chassis, so it is necessary to determine the position of the fixed end in the design process. The difference of skirt and basement has obvious influence on the calculation and analysis of superstructure. The inlaid end acts as a constraint on the superstructure body. This paper analyzes some factors that affect the inlay effect of the embedded terminal. (2) the multi-tower structure is large, the structure arrangement and force are complex, and the foundation settlement is different. This paper analyzes the methods of avoiding structural cracks and reconciling structural settlement differences on the premise of ensuring structural integrity. (3) the regularity of the arrangement of multi-tower structure and anti-lateral force member has great influence on the whole structure and the mechanical performance of the member. In this paper, an engineering example is given to illustrate the regular analysis methods and contents of structural layout and member layout, including structural displacement, anti-lateral stiffness and periodic analysis, etc. (4) structural stability analysis. The second order effect of gravity will be obvious in the case of eccentricity of the structure. This paper analyzes the rigid-weight ratio of the second order effect of the structure. The second order effect of the structure is controlled to a relatively small extent by adjusting the rigid-weight ratio index of the structure layout to avoid the overall stability failure of the structure. The double-tower structure of this project belongs to the multi-tower structure with large chassis, its internal force and deformation analysis is high, the traditional manual calculation method can not meet the requirement of calculation precision. This paper uses SATWE and PMSAP software to carry on the calculation analysis and carries on the comparison. The accuracy of the calculation results can be guaranteed. With the development of finite element theory and the maturity of computing software, its function is becoming more and more powerful. Designers need to understand the working principle of the software and master the use of the software in order to do a better job of structural design.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973

【共引文献】