某单层椭圆抛物面网壳结构荷载试验  

A Single Layer Elliptical Paraboloid Latticed Shell Loading Test

作　　者：韩军 蔡欣宇 HAN Jun;CAI Xinyu(Jiangsu Jianyan Civil Engineering Quality&Safty Appraisal Co.,Ltd,Nanjing Jiangsu 210008 China)

机构地区：[1]江苏建研建设工程质量安全鉴定有限公司,江苏南京210008

出　　处：《江苏建筑》2024年第1期37-41,共5页Jiangsu Construction

摘　　要：网壳结构杆件和节点几何尺寸的偏差以及曲面的偏离对网壳的内力、整体稳定性影响较大。而在既有网壳结构安全鉴定过程中发现质量偏差时,承载力计算应考虑这些偏差情况,但标准并未给出具体方法,文章以某单层椭圆抛物面网壳结构荷载试验为背景,通过荷载试验检验某单层椭圆抛物面网壳结构存在质量偏差的同时,增加额外吊挂荷载情况下结构的承载能力,并为提高结构承载力复核模型的准确性提供依据。The deviations in the geometric dimensions of the members and nodes of the shell structure,as well as the surface deviations,have a significant impact on the internal forces and overall stability of the shell.In the safety assessment of existing shell structures,when quality deviations are identified,the load-carrying capacity calculation should consider these deviations.However,specific methods are not provided in the standards.In this paper,taking a single-layer elliptical paraboloid shell structure load test as the background,it is discussed how to use the load test to verify the existence of quality deviations in the single-layer elliptical paraboloid shell structure,and how to increase the structural load-carrying capacity under additional hanging load conditions.This study also provides a basis for improving the accuracy of the check model for the structural load-carrying capacity.

关 键 词：网壳结构 荷载试验 杆件应力 节点变形 

分 类 号：TU399[建筑科学—结构工程]