钢结构失稳监测方法探讨-结构工程专业论文.docxVIP

摘要攥要 摘要 攥要 为了防止在燕常使用荷载下以及突发性自然或入为灾害发生廒，钢结构发生 失稳破坏，以徒人们多采用消极被动的对策。遮在一定程度上制约了钢结构的跨 度和黼度，也影响了其可靠性和经济性。本_文从探讨络构失稳的先兆规律蒋警并 对镑缡鞫失稳弱簸灏秘鞭撤遂嚣1，襟索技研究，兔采取翼翔积极、圭羲熬黯策骑 鼗锈绦褥失豫撵爨参考。 荫先，本文总结了缩构失稳与其剐度、畿形、频率嚣交化之闻的关系，揭示 了结构成构件失稳前所袭现出来的预兆特征；矮次，本文提出了双钢管构件两种 简化轴向应力一成交本构关系计算模型，并结合工程实例介绍了双钢管构件在空 弼锈绪稳失稳鞭羧襄失稳黢测孛豹威瘸方法；蘩三，本支籍鹭魏癍露予缕擒德豢 蕊浏酾损爨渗麟熬蠢法孽l遂镶臻辫懿失豫蕊溺矮凌，势癸蘩蔽纛甩G鹣系统黉囊溪 传感器系统两个角度探讨钢结构失稳的振动濂测方法；簸后，本文对可斑粥子结 构失稳监测的其它失稳般控部件谶行了初步概念设计，并对实现钢结构失稳监测 与控制一体化搿开发和威用失稳监控部件进行了初步研究。 美链运：炎稳楚瓣，双锈警褥静，失豫赣菠罄箨，蔽凌驻溅 AbstractAbstract Abstract Abstract In order to prevent stcel structures from failure due to instability either under normal loadings or under natural or human-caused catastrophes,most engiricers used to adopt passive prevention strategies,which,to a certain degree．constrained the spans and heights of steel structures and affected their liability and economic efficiencies as well。The paper first studied the indications of impending structure instability,and then explored the methods of monitoring and forecasting of steel structure instability．It provided guidance on using more aggressive，active strategies to prevent steel structure instability． First of all，the paper reviewed the relationships between the structural instability and the changes of the stiffness,deformation，and frequency of a structure or component, which revealed the indication characteristics manifested before the instability．Secondly, the paper proposed two simplified analysis models of the constitutive relation between the axial stress and strain of the double-tube components， and applied them in space steel structures for the instability monitoring and instability forecasting删l甄the paper introduced the methods of structure heath monitoring and damage diagnostics into the field of steel structure instability monitoring and investigated the steel structure instability vibration monitoring methods from the perspectives of applying GPS(Global Position System)and remote-sensing into the steel structure instability vibration monitoring,re