Experimental study on replaceable precast concrete beam-column connections

被引：1

作者：

Choi, Seung - Ho ^{[1
]}

Lee, Sang - Hoon ^{[2
,3
]}

Kim, Jae - Hyun ^{[2
]}

Heo, Inwook ^{[2
]}

Jeong, Hoseong ^{[2
]}

Kim, Kang Su ^{[2
,3
]}

机构：

[1] Univ Seoul, Dept Disaster Management & Fire Safety Engn, 163 Siripdae Ro, Seoul 02504, South Korea

[2] Univ Seoul, Dept Architectural Engn, 163 Siripdae Ro, Seoul 02504, South Korea

[3] Univ Seoul, Smart City Interdisciplinary Major Program, 163 Siripdae Ro, Seoul 02504, South Korea

来源：

EARTHQUAKES AND STRUCTURES | 2024年 / 26卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

beam-column joint; precast concrete; replaceable; seismic performance; BEHAVIOR; FRAMES; SHEAR;

D O I：

10.12989/eas.2024.26.1.049

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The purpose of this study was to develop a system capable of restoring the seismic performance of a precast concrete (PC) connection damaged by an earthquake. The developed PC connection consists of a top-and-seat angle, post tensioning (PT) tendons, and U-shaped steel. The PC beam can be replaced by cutting the PT tendons in the event of damage. In addition, the seismic performance of the developed PC beam-column connection was evaluated experimentally. A PC beam column connection specimen was fabricated, and a quasistatic cyclic loading test was conducted to a maximum drift ratio of 2.3%. Subsequently, the PC beam was replaced by a new PC beam, and the repaired PC connection was loaded to a maximum drift ratio of 5.1%. The structural performance of the repaired PC connection was then compared with that of the original PC connection. The difference in the load at the drift ratio of 2.3% between the original and the repaired PC specimens was only 0.2%. The residual drift ratio in the repaired PC specimen did not exceed 1.0% at the 2.0 % drift ratio cycles, which satisfies the life safety performance level specified in ACI 374.2R-13. When the developed PC connection system is used, structural performance can be restored by rapidly replacing the damaged elements.

引用

页码：49 / 58

页数：10

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