杜春波, 王涛, 郄毅. 交替协调子结构混合试验方法研究[J]. 工程力学, 2019, 36(S1): 54-58. DOI: 10.6052/j.issn.1000-4750.2018.02.S007
引用本文: 杜春波, 王涛, 郄毅. 交替协调子结构混合试验方法研究[J]. 工程力学, 2019, 36(S1): 54-58. DOI: 10.6052/j.issn.1000-4750.2018.02.S007
DU Chun-bo, WANG Tao, QIE Yi. RESEARCH ON STAGGERED COORDINATION APPLICATION IN HYBRID TEST METHODS[J]. Engineering Mechanics, 2019, 36(S1): 54-58. DOI: 10.6052/j.issn.1000-4750.2018.02.S007
Citation: DU Chun-bo, WANG Tao, QIE Yi. RESEARCH ON STAGGERED COORDINATION APPLICATION IN HYBRID TEST METHODS[J]. Engineering Mechanics, 2019, 36(S1): 54-58. DOI: 10.6052/j.issn.1000-4750.2018.02.S007

交替协调子结构混合试验方法研究

RESEARCH ON STAGGERED COORDINATION APPLICATION IN HYBRID TEST METHODS

  • 摘要: 该文提出一种静态与动态分离的在线混合试验框架,其中动力方程由时间积分算法得出,回复力由对子结构的静力加载得出。混合试验中,数值子结构和试验子结构之间的边界协调问题是试验成功与否的关键。该文提出一种交替协调的边界近似协调方法,数值子结构边界上的位移由上一步的试验子结构提供,而获得的边界上的力用于这一步的试验子结构的加载。将该方法应用于六层菱形BRB加固的混凝土框架中,通过数值验证,这种近似的边界协调方式引入的误差可以忽略。尽管这不是一种精确的边界处理方式,但它使子结构混合试验的实施变得更加简单且灵活。

     

    Abstract: This paper proposed an online hybrid test framework using a static and dynamic separated model scheme, where the equations of motion are solved by the operator-splitting (OS) algorithm and the restoring force is obtained from a static analysis or quasi-static test of substructures. The boundary coordination between the numerical and physical substructure is one of the keys to achieve a hybrid test. This paper proposed a staggered coordination method to coordinate the boundary conditions approximately, in which the displacements of boundaries in the numerical substructure in the current step are measured in the physical substructure in the last step and force analyzed results of the numerical substructure are then exerted on the boundaries of physical substructure for loading. The method was applied to a six floor RC frame retrofitted by double-K BRBs. The error caused by the approximation were confirmed to be negligible through numerical verification. Although this is not an accurate method, it makes hybrid tests easier and more flexible.

     

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