Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly
In order to ascertain the failure characteristics of a segment structure with distributed mortises and tenons, one should be aware of the rules of key parameters and the development of cracks during the failure process. In this paper, based on the Foguan-Guangcheng Intercity Railway Tunnel Project,...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8817112 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849403844654530560 |
|---|---|
| author | Songyu Cao Kun Feng Xun Liu Mingqing Xiao Chuan He Ce Li |
| author_facet | Songyu Cao Kun Feng Xun Liu Mingqing Xiao Chuan He Ce Li |
| author_sort | Songyu Cao |
| collection | DOAJ |
| description | In order to ascertain the failure characteristics of a segment structure with distributed mortises and tenons, one should be aware of the rules of key parameters and the development of cracks during the failure process. In this paper, based on the Foguan-Guangcheng Intercity Railway Tunnel Project, a prototype test of the structure of a segment with a staggered joint assembly was performed to study the local mechanical characteristics of the segment lining of the vault. The main conclusions were as follows: (1) The failure process in the test was classified as large eccentric compression failure, and the bearing capacity limit was M = 1993 kN m. (2) The overall displacement distribution of the segment structure was funnel-shaped, and the failure process was divided into three stages, that is, the elastic stage, the elastoplastic stage, and the plastic stage. Thus, it is recommended that the index of the single-point displacement limit of this tunnel be reduced appropriately to be between 1.5 and 1.8%. (3) The change rule of the longitudinal joint opening of the segment can be divided into three stages, that is, slow increase, accelerated increase, and sharp increase. For normal use, the limit of the opening of the longitudinal joint is set at 3 mm. (4) The width of the structural crack and the vertical displacement of the control section can be used as the safety evaluation index of this project. When either a large increase in the width of the crack occurs or the displacement specified above is reached, it can be considered that the structure is about to fail, and immediate protective measures must be taken. |
| format | Article |
| id | doaj-art-9745e157932245baa1e0dc51a6c8fabb |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-9745e157932245baa1e0dc51a6c8fabb2025-08-20T03:37:09ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88171128817112Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed AssemblySongyu Cao0Kun Feng1Xun Liu2Mingqing Xiao3Chuan He4Ce Li5Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaChina Railway Siyuan Survey and Design Group Co. Ltd., Wuhan, Hubei 430071, ChinaKey Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, ChinaNational & Local Joint Engineering Research Center of Underwater Tunnel Technology, Wuhan, Hubei 430071, ChinaIn order to ascertain the failure characteristics of a segment structure with distributed mortises and tenons, one should be aware of the rules of key parameters and the development of cracks during the failure process. In this paper, based on the Foguan-Guangcheng Intercity Railway Tunnel Project, a prototype test of the structure of a segment with a staggered joint assembly was performed to study the local mechanical characteristics of the segment lining of the vault. The main conclusions were as follows: (1) The failure process in the test was classified as large eccentric compression failure, and the bearing capacity limit was M = 1993 kN m. (2) The overall displacement distribution of the segment structure was funnel-shaped, and the failure process was divided into three stages, that is, the elastic stage, the elastoplastic stage, and the plastic stage. Thus, it is recommended that the index of the single-point displacement limit of this tunnel be reduced appropriately to be between 1.5 and 1.8%. (3) The change rule of the longitudinal joint opening of the segment can be divided into three stages, that is, slow increase, accelerated increase, and sharp increase. For normal use, the limit of the opening of the longitudinal joint is set at 3 mm. (4) The width of the structural crack and the vertical displacement of the control section can be used as the safety evaluation index of this project. When either a large increase in the width of the crack occurs or the displacement specified above is reached, it can be considered that the structure is about to fail, and immediate protective measures must be taken.http://dx.doi.org/10.1155/2020/8817112 |
| spellingShingle | Songyu Cao Kun Feng Xun Liu Mingqing Xiao Chuan He Ce Li Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly Advances in Civil Engineering |
| title | Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly |
| title_full | Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly |
| title_fullStr | Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly |
| title_full_unstemmed | Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly |
| title_short | Prototype Experimental Investigation of the Failure Mechanism and Crack Propagation of Segment Lining for Staggered Jointed Assembly |
| title_sort | prototype experimental investigation of the failure mechanism and crack propagation of segment lining for staggered jointed assembly |
| url | http://dx.doi.org/10.1155/2020/8817112 |
| work_keys_str_mv | AT songyucao prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly AT kunfeng prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly AT xunliu prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly AT mingqingxiao prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly AT chuanhe prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly AT celi prototypeexperimentalinvestigationofthefailuremechanismandcrackpropagationofsegmentliningforstaggeredjointedassembly |