Stress Transferring Mechanism of Joint Connected S Member with RC Member in Series

S杆与RC杆串联连接的应力传递机制

基本信息

批准号：
10650578
负责人：
NISHIMURA Yasushi
金额：
$ 1.98万
依托单位：
Osaka Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650578/
关键词：
Hybrid Structure RCS Joint Embedment Length Improvement of Seismic Performance Prying Mechanism Truss Mechanism Bearing Strength Frictional Strength 終局耐力

项目摘要

In 1998, to clarify stress transferring mechanism of the joint connected reinforced concrete member with the steel member in series, four specimens were tested. All specimens had reinforced concrete member with a section of 2000×300 mm and the steel member with a flange width of 100 mm and a depth of 200 mm. The transverse reinforcement ratio in the joints was 0.64% for all specimens. Experimental variable was the length of the steel member embedded in the reinforced concrete member. The length of the embedded steel member was 200, 400, 600 and 800 mm. Pure bending was applied at the joint. From the test results, the following remarks can be drawn ; 1) The mechanism of stress transfer from the steel member to the reinforced concrete member was clarified theoretically. 2) On the basis of this mechanism, a method capable of predicting the ultimate strength was proposed. 3) The predictions were shown to be in good agreement with the test results. 4) From test result, it was shown that the … More embedded length of three times the depth of the steel member is necessary to develop the ultimate flexural strength of the member.In 1999, three joint details were proposed to improve performance of the joint with short embedded length. Joint details with additional transverse reinforcing bars at the beginning and the end of the embedded steel member, and plate welded at the end of the embedded steel member and additional longitudinal and transverse reinforcing bars were proposed. Furthermore, joint detail with diagonal reinforcing bars at the reinforced concrete part of the joint was also proposed. To verify the effectiveness of proposed joint details, four specimens were tested. The dimensions and reinforcement of the member were similar to the specimens carried out in 1998. From test result, it was shown that additional transverse reinforcing bars at the beginning and the end of the embedded steel member and plate welded at the end of the embedded steel member were effective to increase the ultimate strength of the joint. Less

在1998年，为了阐明与串联钢构件的关节连接的钢筋混凝土成员的应力转移机制，测试了四个标本。所有标本均具有钢筋混凝土构件，截面为2000×300毫米，钢构件的法兰宽度为100毫米，深度为200毫米。所有标本的接头横向加固比为0.64％。实验变量是嵌入在钢筋混凝土成员中的钢构件的长度。嵌入式钢构件的长度为200、400、600和800毫米。纯弯曲是在关节上施加的。从测试结果中可以得出以下提醒。 1）理论上阐明了从钢构件到钢筋混凝土成员的应力转移机制。 2）根据这种机制，提出了一种能够预测最终强度的方法。 3）这些预测与测试结果非常吻合。 4）从测试结果中，结果表明，……更嵌入的长度为钢构件深度的三倍以发展成员的最终柔性强度。在1999年，提出了三个联合细节来提高嵌入式长度短的关节性能。联合细节在嵌入式钢构件的开头和末端具有额外的横向加固条，以及在嵌入式钢构件末端焊接的板，并提出了其他纵向和横向加固条。此外，还提出了与关节钢筋混凝土部分的对角线加固条的关节细节。为了验证拟议的联合细节的有效性，测试了四个标本。该成员的尺寸和增强与1998年进行的样品相似。从测试结果中，表明在开始时和嵌入式钢构件的末端和末端嵌入了嵌入钢构件末端的嵌入式钢构件和板的末端有效地增加了接头的最终强度。较少的