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| Abstract: |
| In order to resolve affecting of Different Shear Connectors (the perfobond leisten (PBL) shear connectors and stud shear connectors) on the Mechanical Properties of Prestressed Concrete Composite Box-Girders with Corrugated Steel Webs, Some mechanical properties of Prestressed Concrete Composite Box-Girder with Corrugated Steel Webs were researched by conducting experiments on two specimens with PBL shear connectors and stud shear connectors relating to ultimate bearing capacity, the flexural stiffness, crack resistance properties and the efficiency of prestressing being introduced to the girder, etc. The test results showed that, relative to the stud shear connectors，PBL shear connectors can greatly improve some structural performance qualities of prestressed concrete composite box-girders with corrugated steel webs, such as the ultimate bearing capacity, the flexural stiffness and the crack resistance property, but when the efficiency of prestressing is introduced into the girder, the PBL shear connectors do not perform as well as stud shear connectors. |
| Key words: studs PBL ultimate bearing capacity efficiency of prestressing introduced flexural stiffness crack resistance property |
| DOI：10.11916/j.issn.1005-9113.17044 |
| Clc Number:TU398 |
| Document Code::A |
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| Descriptions in Chinese: |
| 不同剪力连接键对波形钢腹板PC组合梁力学性能影响 逯彦秋1,2 (1.北京首都公路发展集团有限公司, 北京 100161； 2.清华大学 土木工程系，北京 100084) 创新点说明：首次提出并通过实验方法研究了PBL剪力连接键、栓钉剪力连接键对波形钢腹板PC组合梁极限承载力、抗弯刚度、抗裂性、预应力导入效率的影响； 研究目的： 为明确波形钢腹板PC组合梁常用的两种剪力连接键（即PBL剪力键、栓钉剪力键）对波形钢腹板组合梁极限承载力、刚度、抗裂性及预应力导入效率等力学性能的影响，从而为该类型梁设计中正确选择合适的剪力连接键提供技术支持。 研究方： 采用实验结合有限元方法 结果： PBL剪力键在提高波形钢腹板PC组合梁的极限承载力、抗弯刚度、抗裂性等反面优于栓钉剪力键，但是在梁的预应力导入效率方面不如栓钉剪力键。 结论： 在波形钢腹板PC组合梁设计中应根据梁的不同受力特点选择不同的剪力连接键，不可主观臆断地选择剪力连接键，为该类型桥梁留下安全隐患。 关键词：栓钉; PBL剪力键;极限承载力;预应力导入效率;抗弯刚度;抗裂特性 |
