Investigate the Strength of Struts Crossing Cold Joints
| 项目名称： | Investigate the Strength of Struts Crossing Cold Joints |
| 摘要： | Cold joints commonly occur in concrete structures, whether they are a part of new construction (e.g., staged construction, roadway expansion projects, spliced girder bridges) or retrofit efforts (e.g., interface between the new structural elements and the older concrete components). In many cases, the cold joints occur within “disturbed regions” of a structure. The preferred design method in the AASHTO LRFD Bridge Design Specifications for disturbed regions is the strut-and-tie design method. While the commentary states that the capacity of cold joints should be checked in addition to traditional strut-and-tie design checks, there is no specific guidance provided for how to include shear-interface resistance in the context of the strut-and-tie design provisions. Thus, there is a need to develop specific design recommendations for use in the AASHTO LRFD Bridge Design Specifications, as well as the TxDOT Bridge Design Manual. The research team will investigate the strength of struts crossing cold joints through a comprehensive analytical and experimental test program informed by a literature review and examination of common cold joint cases encountered by bridge designers. The design recommendations developed shall provide the guidance for implementing the necessary design checks at cold joints encountered in Texas bridge design practice. |
| 状态： | Active |
| 资金： | 1,366,369 |
| 资助组织： | Texas Department of Transportation |
| 项目负责人： | Adediwura, Jade |
| 执行机构： | Center for Transportation Research |
| 开始时间： | 20210901 |
| 预计完成日期： | 20250630 |
| 主题领域： | Bridges and other structures；Hydraulics and Hydrology |
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