Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct
This paper discusses the behavior of grouted noncontact lap splices under monotonic tension load. Deformed bars lapped through a grout-filled corrugated duct, and a spiral reinforcement was preembedded in the connection to improve tensile strength of the splice. The experimental results show that bo...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/5280986 |
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| author | Yongfeng Zheng Zhangfeng Zhu Zhengxing Guo Peng Liu |
| author_facet | Yongfeng Zheng Zhangfeng Zhu Zhengxing Guo Peng Liu |
| author_sort | Yongfeng Zheng |
| collection | DOAJ |
| description | This paper discusses the behavior of grouted noncontact lap splices under monotonic tension load. Deformed bars lapped through a grout-filled corrugated duct, and a spiral reinforcement was preembedded in the connection to improve tensile strength of the splice. The experimental results show that bond failure splices are always failed by the pullout of the preembedded bar other than the grouted bar. As the spiral pitch distance is not greater than 75 mm, the tensile strength generally improves with the increment of volumetric spiral reinforcement ratio due to the higher confinement provided by the spiral bar. Compared with the spiral bar diameter, the spiral pitch distance provides more dominant effect on the tensile strength of the connection. Based on the experimental results and the development length specified in ACI 318-14, a revised equation with a reduction factor of 0.76 was proposed to predict the required minimum lap length of spirally confined lap splice. |
| format | Article |
| id | doaj-art-f70a0f0989e8434493091849749b54a6 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f70a0f0989e8434493091849749b54a62025-02-03T01:03:07ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/52809865280986Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated DuctYongfeng Zheng0Zhangfeng Zhu1Zhengxing Guo2Peng Liu3Key Laboratory of Building Structural Retrofitting and Underground Space Engineering (Shandong Jianzhu University), Ministry of Education, Jinan, Shandong 250101, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, ChinaSchool of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, ChinaSchool of Civil Engineering, Central South University, Changsha 410075, ChinaThis paper discusses the behavior of grouted noncontact lap splices under monotonic tension load. Deformed bars lapped through a grout-filled corrugated duct, and a spiral reinforcement was preembedded in the connection to improve tensile strength of the splice. The experimental results show that bond failure splices are always failed by the pullout of the preembedded bar other than the grouted bar. As the spiral pitch distance is not greater than 75 mm, the tensile strength generally improves with the increment of volumetric spiral reinforcement ratio due to the higher confinement provided by the spiral bar. Compared with the spiral bar diameter, the spiral pitch distance provides more dominant effect on the tensile strength of the connection. Based on the experimental results and the development length specified in ACI 318-14, a revised equation with a reduction factor of 0.76 was proposed to predict the required minimum lap length of spirally confined lap splice.http://dx.doi.org/10.1155/2019/5280986 |
| spellingShingle | Yongfeng Zheng Zhangfeng Zhu Zhengxing Guo Peng Liu Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct Advances in Materials Science and Engineering |
| title | Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct |
| title_full | Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct |
| title_fullStr | Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct |
| title_full_unstemmed | Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct |
| title_short | Behavior and Splice Length of Deformed Bars Lapping in Spirally Confined Grout-Filled Corrugated Duct |
| title_sort | behavior and splice length of deformed bars lapping in spirally confined grout filled corrugated duct |
| url | http://dx.doi.org/10.1155/2019/5280986 |
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