塔机与基础不同连接方式的可靠性比较
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摘要
本文采用理论计算结合数值仿真的方法对同一类型塔吊的塔机底座与塔吊基础三种不同连接方式(焊接、螺栓连接以及混凝土整体现浇),进行了受力性能分析。分析结果表明采用焊接与螺栓连接方式的安全储备较低,且施工工艺复杂现场管理难度大。对于采用混凝土整体现浇连接方式所形成的承台基础整体刚度大、变形小、安全储备高且施工简单,便于操作,成本低廉。若施工条件允许,建议塔机底座与基础承台之间的连接方式采用混凝土整体现浇。
In this paper, the theoretical calculation and numerical simulation method are used to analyze the mechanical properties of the tower crane base and tower crane foundation of the same type of tower crane(welding, bolting and concrete cast-in-place). The analysis results show that the safety reserve with welding and bolt connection is low, and the construction process is difficult to manage on site. The foundation of the platform formed by the overall cast-in-place connection of concrete has large rigidity, small deformation, high safety reserve, simple construction, easy operation and low cost. If the construction conditions permit, it is recommended that the connection between the base of the tower crane and the foundation platform be cast in place.
In this paper, the theoretical calculation and numerical simulation method are used to analyze the mechanical properties of the tower crane base and tower crane foundation of the same type of tower crane(welding, bolting and concrete cast-in-place). The analysis results show that the safety reserve with welding and bolt connection is low, and the construction process is difficult to manage on site. The foundation of the platform formed by the overall cast-in-place connection of concrete has large rigidity, small deformation, high safety reserve, simple construction, easy operation and low cost. If the construction conditions permit, it is recommended that the connection between the base of the tower crane and the foundation platform be cast in place.
引文
[1]倪华君.塔吊基础设计计算的若干问题探讨[J].建筑施工,2015,37(4):490-491+504.
[2]刘伟南,郭其训,朱涵.高桩承台塔吊基础格构柱轴向受力分析[J].天津理工大学学报,2011,27(4):68-73.
[3]孙凌夫,宋桂珍,侯园平.基于ANSYS的新型塔吊安装基础的力学性能分析[J].太原理工大学学报,2015,46(5):583-586+591.
[4]钢结构设计规范:GB 50017-2003[S].北京:中国计划出版社,2003.
[5]叶见曙.结构设计原理[M].北京:人民交通出版社,2014.
[2]刘伟南,郭其训,朱涵.高桩承台塔吊基础格构柱轴向受力分析[J].天津理工大学学报,2011,27(4):68-73.
[3]孙凌夫,宋桂珍,侯园平.基于ANSYS的新型塔吊安装基础的力学性能分析[J].太原理工大学学报,2015,46(5):583-586+591.
[4]钢结构设计规范:GB 50017-2003[S].北京:中国计划出版社,2003.
[5]叶见曙.结构设计原理[M].北京:人民交通出版社,2014.