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某单层椭圆抛物面网壳结构荷载试验

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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.
A Single Layer Elliptical Paraboloid Latticed Shell Loading Test
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.

paraboloid latticed shell structureload testbar stressnodal deformation

韩军、蔡欣宇

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江苏建研建设工程质量安全鉴定有限公司,江苏南京 210008

网壳结构 荷载试验 杆件应力 节点变形

2024

江苏建筑
江苏省土木建筑学会,江苏省建筑科学研究院有限公司

江苏建筑

影响因子:0.395
ISSN:1005-6270
年,卷(期):2024.(1)
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