Flexural strengthening of reinforced concrete T-beams using a composite of prestressed steel wire ropes embedded in polyurethane cement (PSWR-PUC): Theoretical analysis

被引：6

作者：

Zhang, Kexin ^{[1
]}

Shen, Xinyuan ^{[1
]}

Liu, Jicheng ^{[1
]}

Teng, Fei ^{[1
]}

Zhang, Guanhua ^{[2
]}

Wang, Jiawei ^{[2
]}

机构：

[1] Shenyang Jianzhu Univ, Sch Transportat & Geomatics Engn, Dept Bridge Engn, 25 Hunnan Zhong Rd, Shenyang, Peoples R China

[2] Liaoning Transportat Planning & Design Inst Co LTD, Res & Dev Ctr, 42 2 Lidao Rd, Shenyang, Peoples R China

来源：

STRUCTURES | 2022年 / 44卷

关键词：

Prestressed steel wire rope (PSWR); Polyurethane cement (PUC); Reinforced concrete (RC) T-beam; Theoretical analysis; Flexural strengthening of prestressed steel wire; ropes embedded in polyurethane cement; (PSWR-PUC); BEHAVIOR;

D O I：

10.1016/j.istruc.2022.08.014

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A composite of prestressed steel wire ropes embedded in polyurethane cement (PSWR-PUC) is a new and efficient strengthening method. This paper mainly studies theoretical analysis of reinforced concrete (RC) T-beams strengthened with PSWR-PUC. First, the mechanical properties of the polyurethane cement (PUC) such as ulti-mate flexural strength and ultimate compressive strength were studied experimentally. Second, the calculation methods of cracking load and maximum bearing capacity were proposed. Third, degree of prestress, ratio of reinforcement and thickness of PUC responsible for the short-term cross-sectional stiffness were analyzed. Finally, calculation equations for predicting average crack spacing and maximum crack width were suggested. The results from using the proposed methods agree well with the experimental ones. Theoretical analysis and proposed calculation equations are feasible.

引用

页码：1278 / 1287

页数：10

共 27 条

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