|Table of Contents|

Experimental Study on Out-of-plane Punching Shear Resistance of ALC Wall Panel with Hook Head Bolt Connection(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
142-149
Research Field:
结构工程
Publishing date:

Info

Title:
Experimental Study on Out-of-plane Punching Shear Resistance of ALC Wall Panel with Hook Head Bolt Connection
Author(s):
QIN Shi-hong1;  ZHENG Hong-xiang1;  ZHANG Jing-jie2;  FAN Shi-jie1;  SONG Kai-wei2
(1. Key Laboratory of New Technology for Construction of Cities in Mountain Area of Ministry of Education, Chongqing University, Chongqing 400045, China; 2. School of Civil Engineering, Chongqing University, Chongqing 400045, China; 3. Chongqing Construction Science Research Institute Co., Ltd., Chongqing 400042, China)
Keywords:
enclosure structure;  out-of-plane mechanical performance;  drawing test;  ALC wall pannel joint;  hook bolt connection;  punching failure
PACS:
TU973.2
DOI:
10.19815/j.jace.2021.10045
Abstract:
In order to understand the mechanical properties of the joints, the out-of-plane load test and finite element simulation of 13 ALC wall panel joints with hook head bolts were carried out. The results show that for autoclaved aerated concrete wall panels connected with hook head bolts, under the action of wind load out-of-plane suction or horizontal earthquake to the outside of the wall board, the load is transferred through the gasket, and the punching failure is finally formed. The whole failure process can be divided into linear stage, cracking stage and final failure stage. The punching shear bearing capacity will increase with the increase of transverse reinforcement quantity or the decrease of reinforcement spacing in the joint area. The thickness of wallboard can obviously affect the punching shear bearing capacity. The configuration of punching short reinforcement is an effective way to improve the punching shear resistance capacity. Node failure occurs at a certain angle around the gasket. The punching failure angle in the length direction of the plate varies between 67.23°-71.07°, with an average value of 69.35°. The punching angle in the width direction of the plate varies between 61.67°-68.42°, with an average value of 64.89°. The punching angle in the length direction is slightly larger than the plate width direction, and the total is more symmetrical. The test method designed accords with the force characteristics of hook bolt connection. By combining the cross-middle node test with finite element simulation, the punching shear capacity of the end joint is about 73% of the punching shear capacity of the middle-span joint. It can be considered that the punching cone volume and circumference will increase with the increase of the distance between the joint position and the plate end.

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Last Update: 2022-09-30