Research on Simply Connection of Members for Mixed Structure

混合结构杆件简单连接研究

• 批准号: 14350229
• 负责人: KAKUTA Yoshio
• 金额: $ 6.78万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14350229/
• 关键词: Mixed Structure; Method for Connection; Pre-stressed Concrete Structure; Steel Structure; Loop Joint; Bearing-type-Connection; Shear transfer Strength; 接合部; ループ継手; 重ね継手; 静的耐力; 疲労耐久性

The followings are summary of what have been obtained in the experimental research of the loop joint.From static tension tests with loop joint, two types failure mode of yielding of longitudinal bar and crushing of core concrete in the loop joint are observed. In case of crushing the core concrete, ultimate strength is large as the loop height, the splice length and the bar diameter are increased Mechanical model for estimating the compressive stress of the core concrete is conducted. The capacity of the compressive stress can he estimated to define the limit stress determined form the concrete strength and the bar diameter From the fatigue tests using beam specimens, it is shown that the fatigue life may be decrease due to occur the local bending at the joint.The followings are summary of what have been obtained in the experimental research of the bearing-type connection.It is clarify that a cracking load is computed by using EC beam theory with the bond strength of the hearing-type connection and a compression zone at the connection resists to the shear force after cracking when the connection are subjected to bending moment. The equation for the shear transfer strength is conducted in such this case.

以下是循环关节实验研究中获得的摘要。从静态张力测试中，有环状关节，两种类型的纵向杆屈服模式以及循环关节中核心混凝土压碎的屈服模式。在粉碎核心混凝土的情况下，随着回路高度，剪接长度和条形直径增加机械模型，以估计核心混凝土的压缩应力。他可以估计，他可以估计使用梁样品从疲劳测试中定义的极限应力确定的极限应力，并表明由于发生在关节处的局部弯曲而导致疲劳寿命可能会降低。以下是关于轴承型连接的实验研究中获得的摘要。澄清说，使用EC理论使用EC理论计算裂纹负载，并具有听力型连接的键强度和在当连接遇到弯矩时，连接在破裂后抗剪切力。在这种情况下，进行了剪切传递强度的方程式。

项目成果

Yasuhiko Sato: "FLEXURAL AND SHEAR CHARACTERISTICS OF SPLICED PC BEAMS"Proceedings of the first fib congress 2002. (CD-ROM). (2002)

Yasuhiko Sato：“拼接 PC 梁的弯曲和剪切特性”2002 年第一届 Fib 大会记录。（CD-ROM）。