Tower cranes, which are composed of a lattice structure, are mostly used to transport heavy materials and equipment in construction sites. The delicate structure of tower cranes and operating conditions make them very sensitive to dynamic excitation such as instant overload for any reason caused by transported material or wind and earthquake effect. This study was carried out for investigating the seismic performance of tower crane mast types with different kinds of bracing configurations. A program with respect to finite element method was written in MATLAB which is capable of meshing, modal analysis, and transient analysis. While nodal coordinates, material information, cross-section data, and the orientation of cross-section for each element in the structure and earthquake motion in the time domain are used for input data in the program, natural frequencies, mode shapes, mass participation factors of the structure and displacement, velocity and acceleration response of each node are obtained as output parameters. In this research, different types of mast frames were designed in terms of the most commonly used bracing configuration and were used in modal and transient analysis using two different earthquake motion inputs. The seismic performance of each mast type was determined in the time domain in terms of dynamic response characteristics.

塔式起重机由格子结构组成，多用于建筑工地运输重型物料和设备。塔式起重机的精密结构和操作条件使其对动态激励非常敏感，例如由于运输材料或风和地震效应引起的任何原因引起的瞬时过载。本研究旨在研究具有不同类型支撑结构的塔式起重机桅杆类型的抗震性能。一个关于有限元方法的程序是用 MATLAB 编写的，它能够进行网格划分、模态分析和瞬态分析。而节点坐标、材料信息、横截面数据以及结构中每个单元的横截面方向和时域中的地震运动用作程序中的输入数据，获得结构的固有频率、模态振型、质量参与因子以及各节点的位移、速度和加速度响应作为输出参数。在这项研究中，根据最常用的支撑配置设计了不同类型的桅杆框架，并使用两种不同的地震运动输入用于模态和瞬态分析。根据动力响应特性，在时域中确定每种桅杆类型的抗震性能。根据最常用的支撑配置设计了不同类型的桅杆框架，并使用两种不同的地震运动输入用于模态和瞬态分析。根据动力响应特性，在时域中确定每种桅杆类型的抗震性能。根据最常用的支撑配置设计了不同类型的桅杆框架，并使用两种不同的地震运动输入用于模态和瞬态分析。根据动力响应特性，在时域中确定每种桅杆类型的抗震性能。