科技创新与应用2026，Vol.16Issue(3)：178-182,5.DOI:10.19981/j.CN23-1581/G3.2026.03.044
双层大跨桁架同步安装与多级卸载控制技术研究
熊煊炎 1张强 1郭凯 1杨俊 1于加林 1周耀谊1
作者信息
- 1. 中国水利水电第四工程局有限公司,西宁 810007
- 折叠
摘要
Abstract
Aiming at the problems of insufficient process coordination,lack of load distribution algorithms,and lagging green construction in the construction of double-layer large-span trusses,this paper takes the Western(Chongqing)Science Hall project as the engineering background and proposes a technical system of"integrated small-unit assembly-double-layer synchronous hoisting-graded intelligent unloading."Through high-precision prefabrication of small units in the factory(assembly error≤0.8 mm),combined with dual-crane coordinated lifting by crawler cranes and BIM simulation to optimize lifting point arrangement,synchronous installation of double-layer trusses is achieved(elevation and axis deviation≤3 mm).The design of"dual-purpose installation-unloading supports,"combined with ANSYS finite element simulation and dynamic stress monitoring(accuracy±1 MPa),establishes a graded unloading control process,ensuring an unloading height difference≤15 mm and stress variation rate≤10%.Engineering practice shows that this technology reduces the construction period by 30 days and costs by 22%(cumulative savings of 7.468 4 million yuan),with deformation control meeting specification requirements(maximum deflection value of 12 mm,displacement L/4 000).The research overcomes challenges such as large pre-assembly errors in irregular joints,high risks of high-altitude operations,and asymmetric load unloading,forming the"Double-Layer Large-Span Truss Synchronous Construction Method."It provides a feasible solution for industrialized,intelligent,and green construction of steel structure projects with spans of 50-80 m,demonstrating significant economic benefits and promotion value.关键词
双层大跨桁架/同步安装/分级卸载/一体化拼装/智能监测Key words
double-layer long-span trusse/synchronous installation/hierarchical unloading/integrated assembly/intelligent monitoring分类
交通工程引用本文复制引用
熊煊炎,张强,郭凯,杨俊,于加林,周耀谊..双层大跨桁架同步安装与多级卸载控制技术研究[J].科技创新与应用,2026,16(3):178-182,5.
