摘要
内蒙古某体育馆钢桁架巨拱顶面标高为129.000m,跨度为322.65m,采用液压同步提升技术进行安装。分析和研究巨拱安装过程中的关键难点,并将巨拱分成7个安装单元,各单元先在地面利用胎架进行拼装,再逐步对称液压提升吊装,从而将高空作业量降至最少,施工效率高,施工质量好,保障了吊装安全。巨拱安装的3种工况中,巨拱杆件的最大应力比均<1.0,满足提升要求。
The steel truss giant arch top elevation is 129. 000m and the span is 322.65m for a gymnasium in Inner Mongolia. The giant arch installation adopts hydraulic synchronous lifting technology. This paper analyzes and studies the key installation difficulties of the giant arch, the giant arch divides into seven installation units, each unit installed by utilizing bed-jig on ground, symmetric hydraulic lifting and installing step by step. The above measures remarkably reduce occupations at elevated heights, improve efficiency of construction, and ensure construction quality and lifting safety. Among the three installation conditions of the giant arch, the bars stress ratio maximums are all less than 1.0 for the giant arch, meeting the lifting requirement.
出处
《施工技术》
CAS
北大核心
2017年第24期37-40,43,共5页
Construction Technology
基金
江苏省青蓝工程资助
关键词
钢结构
巨拱
液压提升
胎架
应力比
安装
steel structures
giant arch
hydraulic lifting
bed-jig
stress ratio
installation
