Parameter analysis and design method of ultra-high performance concrete shear strengthening RC beams

被引:0
作者
Wang, Jiawei [1 ]
Wang, Ziqian [1 ]
Ying, Feifei [1 ]
Yu, Haitao [2 ]
机构
[1] Anhui Polytech Univ, Sch Architecture & Civil Engn, Beijing Middle Rd, Wuhu, Peoples R China
[2] Heilongjiang Longfeng Highway Engn Test Co LTD, Hexing Rd, Harbin, Peoples R China
关键词
RC beam shear reinforcement; UHPC; shear bearing capacity; parameter analysis;
D O I
10.24425/ace.2024.149873
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In recent years, bridge safety accidents caused by insufficient shear bearing capacity of bridges have attracted increasing attention. The main causes include internal factors such as insufficient bridge section and deterioration of steel bars, as well as external factors, for example, vehicle load surge and improper maintenance. To address this issue to some degree, this article adopts the method of strengthening RC beams with ultra-high performance concrete (UHPC) and conducts parameter analysis using finite element method, taking into consideration the influence of four parameters: reinforcement material, reinforcement thickness, reinforcement length, and reinforcement form on the shear strengthening characteristics of RC rectangular beams. After obtaining the optimal reinforcement plan through parameter analysis, the author applied the research results to an existing bridge with insufficient shear strength. It then turned out that the shear bearing capacity of the reinforced bridge's inclined section increased by approximately 27.1%. Simple and fast in construction, this reinforcement method is one of the methods that is effective to increase cross-section reinforcement; besides, it features good economic characteristics and applicability.
引用
收藏
页码:431 / 445
页数:15
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