| 陆征然,郭超,温永钦,陈志华,刘彤,曹硕.偏心荷载作用下扣件式钢管满堂支承体系承载性能研究[J].,2016,56(1):20-27 |
| 偏心荷载作用下扣件式钢管满堂支承体系承载性能研究 |
| Study of bearing capacity of fastener steel tubular full hall formwork support system under eccentric load |
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| DOI：10.7511/dllgxb201601004 |
| 中文关键词: 满堂支撑架 满堂脚手架 扣件 偏心荷载 承载性能 有限元分析 |
| 英文关键词: full hall formwork support full hall formwork scaffold coupler eccentric load bearing capacity finite element analysis |
| 基金项目:国家自然科学基金青年基金资助项目(51308255)；辽宁省高等学校杰出青年学者成长计划资助项目(LJQ2014059)；沈阳建筑大学青年基金资助项目；沈阳建筑大学学科涵育计划资助项目(XKHY-62). |
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| 中文摘要: |
| 如何准确地对扣件式钢管满堂支承体系的稳定承载力进行计算是亟待解决的一个技术难题．现有的各种满堂支承体系承载力计算方法中，均没有考虑由于扣件的偏心连接而导致水平杆与立杆不在同一平面内的情况以及满堂脚手架通过水平杆将上部荷载偏心传递给立杆的影响(以上两种偏心情况统称为偏心荷载)．在分析满堂支承体系结构特点的基础上，提出了考虑偏心荷载作用下的满堂支承体系数值计算模型．通过对大量不同搭设参数下的满堂支承体系分别进行是否考虑偏心荷载影响的非线性有限元模型分析及2个满堂脚手架的原型试验，证实了偏心荷载这一因素对扣件式钢管满堂支承体系承载性能的影响．所提出的计算模型合理、安全，可为今后满堂支撑架及满堂脚手架的设计提供有价值的参考． |
| 英文摘要: |
| How to accurately calculate the bearing capacity of fastener steel tubular full hall formwork support system is currently an urgent technical problem to be solved. The existing calculation methods didn′t consider the situation that upright tube and horizontal tube were not in the same plane induced by eccentric connection of coupler, and the effect of eccentric transfer of upper load from horizontal tubes to upright tubes (The above two eccentric situations are totally named eccentric load). A series of numerical calculation models with consideration of eccentric load for full hall formwork support system are put forward based on the analysis of its structure features. Through the analysis of non-linear finite element models for full hall formwork support system in different geometric parameters with and without consideration of eccentric load and two full hall formwork scaffold prototype tests, the effect of eccentric load on the bearing capacity of fastener steel tubular full hall formwork support system is verified. The proposed calculation models are rational and safe, which can offer valuable reference for design of full hall formwork support and full hall formwork scaffold. |
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