Mechanical Behavior of Shear Connector

剪力连接器的机械性能

基本信息

批准号：
07650521
负责人：
UEDA Tamon
金额：
$ 1.41万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

Shear connector should be placed to assure the composite action between core concrete and skin steel plates in sandwich structures. The code for design of steel-concrete sandwich structures proposed by JSCE specifies how to arrange shear connectors considering its capacity for transferring shear force. However, the effects of existence and deformation characteristics of shear connector on member capacity, especially shear capacity, have not been clarified yet. In this study, having constitutive laws for finite element analysis of sandwich members in our mind, it was aimed to develop a mechanical model for prediction of deformation and capacity of shear connectors. The type of shear connector is shaped steel shear connector. The followings are the conclusions.(1) A series of test for steel plates without shear connector indicated that there was a linear relation between capacity of shear force transfer and confining force and that the capacity of shear force transfer was reduced by 20 to 30% putting lubrication oil on the plate.(2) Finite element analysis in which the part with shear connectors and the part between shear connectors were modeled differently as link elements expressing relationship between transferred shear force and slip could predict the deformation and ultimate capacity of open sandwich beams.From a series of test in which height of shear connector was a parameter the shear connector was modeled as a cantilever together with surrounding concrete. The stiffness of the cantilever was found to be dependent on the height of shear connector, the transferred shear force and the confining force in the surrounding concrete. The transferred shear force at a sudden reduction of the stiffness could be modeled as well.

应放置剪切连接器，以确保三明治结构中核心混凝土和皮肤钢板之间的复合作用。 JSCE提出的钢结构三明治结构的设计代码指定了如何考虑其转移剪切力的能力来安排剪切连接器。但是，尚未阐明剪切连接器对成员容量（尤其是剪切能力）的存在和变形特征的影响。在这项研究中，在我们脑海中拥有用于三明治成员的有限元分析的构成定律，其目的是为预测剪切连接器的变形和容量的机械模型。剪切连接器的类型是形状的钢剪连接器。以下是结论。（1）对无剪切连接器的一系列测试表明，剪切力传递的能力与剪切力转移的能力之间存在线性关系，并且将剪切力传递的能力降低了20％至30％，将润滑油置于板上的润滑油。（2）与剪切型连接之间的有限元素分析以及剪切连接之间的零件分析以及模型的链接分析，这些链接是模型的剪切元素，这些链接是模型的链接，并具有模型的链接分析。可以预测开放式夹心梁的变形和最终容量。从一系列测试中，剪切连接器的高度是剪切连接器的参数，将剪切连接器与周围的混凝土一起建模为悬臂。发现悬臂的刚度取决于剪切连接器的高度，转移的剪切力和周围混凝土中的闭合力。也可以在刚度突然降低时转移的剪切力也可以进行建模。