Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid

With the development of the geotechnical reinforcement technology, the form of reinforcing materials tends to be three-dimensional. Strengthened blocks of a certain thickness are attached to the joints of the longitudinal and transverse ribs of an ordinary biaxial geogrid so that it becomes a geogri...

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Autores principales:	ZHANG Mengxi, MA Yuan, QIU Chengchun
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Office of Journal of Shanghai Jiao Tong University 2020
Materias:	geogrid reinforcement pull-out test interface effect ultimate pull-out resistance Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/c4b357e6a8724293b2012166b456174f
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spelling	oai:doaj.org-article:c4b357e6a8724293b2012166b456174f2021-11-04T09:34:51ZInfluence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid1006-246710.16183/j.cnki.jsjtu.2019.275https://doaj.org/article/c4b357e6a8724293b2012166b456174f2020-12-01T00:00:00Zhttp://xuebao.sjtu.edu.cn/CN/10.16183/j.cnki.jsjtu.2019.275https://doaj.org/toc/1006-2467With the development of the geotechnical reinforcement technology, the form of reinforcing materials tends to be three-dimensional. Strengthened blocks of a certain thickness are attached to the joints of the longitudinal and transverse ribs of an ordinary biaxial geogrid so that it becomes a geogrid with strengthened nodes with a three-dimensional reinforcement effect. The layout of the strengthened nodes is divided into two types: upper and lower bilateral arrangement and upper unilateral arrangement, in which the total node thickness was the same. To explore the complex interaction mechanism of the reinforced soil interface, a series of indoor pull-out tests are conducted to investigate the influence of strengthened node arrangement on the characteristics of the reinforced soil interface. Based on the punching shear failure mechanism, the reinforcing mechanism of strengthened nodes is analyzed and the theoretical model of ultimate pull-out resistance is obtained. The results show that the ultimate pull-out resistance of the geogrid with strengthened nodes has a positive correlation with normal stress and node thickness. At the same normal stress, compared with the ordinary geogrid, the ultimate pull-out resistance of the two layout types of strengthened nodes is improved to some extent. The highest improvement rates are 118.33% and 96.73%, respectively. The interface apparent friction coefficient, pseudo cohesion, and comprehensive friction angle increase simultaneously. The ultimate pull-out resistance of the upper and lower bilateral arrangement is bigger than that of the upper unilateral arrangement. The error between the theoretical value based on the punching shear failure mode and the experimental value is less than 10%, and the strengthened node significantly improves the pull-out resistance of the geogrid.ZHANG MengxiMA YuanQIU ChengchunEditorial Office of Journal of Shanghai Jiao Tong Universityarticlegeogridreinforcementpull-out testinterface effectultimate pull-out resistanceEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156Naval architecture. Shipbuilding. Marine engineeringVM1-989ZHShanghai Jiaotong Daxue xuebao, Vol 54, Iss 12, Pp 1307-1315 (2020)
institution	DOAJ
collection	DOAJ
language	ZH
topic	geogrid reinforcement pull-out test interface effect ultimate pull-out resistance Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	geogrid reinforcement pull-out test interface effect ultimate pull-out resistance Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 ZHANG Mengxi MA Yuan QIU Chengchun Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
description	With the development of the geotechnical reinforcement technology, the form of reinforcing materials tends to be three-dimensional. Strengthened blocks of a certain thickness are attached to the joints of the longitudinal and transverse ribs of an ordinary biaxial geogrid so that it becomes a geogrid with strengthened nodes with a three-dimensional reinforcement effect. The layout of the strengthened nodes is divided into two types: upper and lower bilateral arrangement and upper unilateral arrangement, in which the total node thickness was the same. To explore the complex interaction mechanism of the reinforced soil interface, a series of indoor pull-out tests are conducted to investigate the influence of strengthened node arrangement on the characteristics of the reinforced soil interface. Based on the punching shear failure mechanism, the reinforcing mechanism of strengthened nodes is analyzed and the theoretical model of ultimate pull-out resistance is obtained. The results show that the ultimate pull-out resistance of the geogrid with strengthened nodes has a positive correlation with normal stress and node thickness. At the same normal stress, compared with the ordinary geogrid, the ultimate pull-out resistance of the two layout types of strengthened nodes is improved to some extent. The highest improvement rates are 118.33% and 96.73%, respectively. The interface apparent friction coefficient, pseudo cohesion, and comprehensive friction angle increase simultaneously. The ultimate pull-out resistance of the upper and lower bilateral arrangement is bigger than that of the upper unilateral arrangement. The error between the theoretical value based on the punching shear failure mode and the experimental value is less than 10%, and the strengthened node significantly improves the pull-out resistance of the geogrid.
format	article
author	ZHANG Mengxi MA Yuan QIU Chengchun
author_facet	ZHANG Mengxi MA Yuan QIU Chengchun
author_sort	ZHANG Mengxi
title	Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
title_short	Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
title_full	Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
title_fullStr	Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
title_full_unstemmed	Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid
title_sort	influence of strengthened node arrangement on pull-out characteristics of biaxial geogrid
publisher	Editorial Office of Journal of Shanghai Jiao Tong University
publishDate	2020
url	https://doaj.org/article/c4b357e6a8724293b2012166b456174f
work_keys_str_mv	AT zhangmengxi influenceofstrengthenednodearrangementonpulloutcharacteristicsofbiaxialgeogrid AT mayuan influenceofstrengthenednodearrangementonpulloutcharacteristicsofbiaxialgeogrid AT qiuchengchun influenceofstrengthenednodearrangementonpulloutcharacteristicsofbiaxialgeogrid
_version_	1718444991151341568

Influence of Strengthened Node Arrangement on Pull-Out Characteristics of Biaxial Geogrid

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