FHWA-ICT-25-002 预制预应力混凝土横向裂缝桥面板梁的测试、分析和荷载额定值 Testing, Analysis, and Load Rating of Precast Prestressed Concrete Deck Beams with Transverse Cracks

VIP免费

那山那人那狗 2025-08-26 27 6.75MB 82 页 16星币

侵权投诉

Report No. FHWA-ICT-25-002

Testing, Analysis, and Load Rating of

Precast Prestressed Concrete Deck

Beams with Transverse Cracks

Bassem Andrawes

Dachina Gunasekaran

ICT Project R27-226

ISSN: 0197-9191

ICT Series Report No. 25-002

https://doi.org/10.36501/0197-9191/25-002

May 2025

TECHNICAL REPORT DOCUMENTATION PAGE

1. Report No.

FHWA-ICT-25-002

2. Government Accession No.

N/A

3. Recipient’s Catalog No.

N/A

4. Title and Subtitle

Testing, Analysis, and Load Rating of Precast Prestressed Concrete Deck Beams with

Transverse Cracks

5. Report Date

May 2025

6. Performing Organization Code

N/A

7. Authors

Bassem Andrawes, https://orcid.org/0000-0002-8954-3751

Dachina Gunasekaran, https://orcid.org/0000-0003-1431-6324

8. Performing Organization Report No.

ICT-25-002

UILU-2025-2002

9. Performing Organization Name and Address

Illinois Center for Transportation

Department of Civil and Environmental Engineering

University of Illinois Urbana-Champaign

205 North Mathews Avenue, MC-250

Urbana, IL 61801

10. Work Unit No.

N/A

11. Contract or Grant No.

R27-226

12. Sponsoring Agency Name and Address

Illinois Department of Transportation (SPR)

Bureau of Research

126 East Ash Street

Springfield, IL 62704

13. Type of Report and Period Covered

Final Report 8/16/20–5/15/25

14. Sponsoring Agency Code

15. Supplementary Notes

Conducted in cooperation with the U.S. Department of Transportation, Federal Highway Administration.

https://doi.org/10.36501/0197-9191/25-002

16. Abstract

This study focused on understanding the impact of transverse cracks on the residual capacity and load rating analysis of in-

service precast prestressed concrete (PPC) deck beams. Two decommissioned (33 × 36 and 21 × 36) PPC deck beams were tested

under four-point bending loads to assess the impact of transverse cracks on the structural performance of the beams. Finite

element and theoretical cracked section analyses were also performed to investigate the capacity of the as-built and cracked PPC

deck beam. Transverse cracks reduced the load rating capacity of the 33 × 36 beam by almost 34%, which subsequently reduced

the capacity-based load rating factor by 22% under the HS-20 truck load. The experimental investigation of the 21 × 36 PPC deck

beam showed that the load required to induce visible cracks in the beam was 95.5% of its AASHTO live load capacity. The load

rating of the cracked 21 × 36 beam was 73.6% lower than its as-built capacity, exhibiting a severe reduction in its load-bearing

capacity. A parametric study was conducted to understand the effect of the influencing parameters, like the beam geometry and

material properties, on the damaged beams’ behavior. For PPC deck beams with rectangular voids, the statistically significant

parameters were span length, strand diameter, and skew angle. In the parametric study, the inventory load rating factor of the

prestressing strands in tension was predicted to decrease linearly for a crack width up to 0.64 mm, while the capacity inventory

rating factor was predicted to decrease up to 73.8% for a crack width of 0.64 mm.

17. Key Words

Box Beams, Transverse Cracks, Residual Capacity, Prestressed

Concrete, Load Rating, Parametric Study

18. Distribution Statement

No restrictions. This document is available through the

National Technical Information Service, Springfield, VA

22161.

19. Security Classif. (of this report)

Unclassified

20. Security Classif. (of this page)

Unclassified

21. No. of Pages

22. Price

N/A

Form DOT F 1700.7 (8-72) Reproduction of completed page authorized

文档加载中……请稍候！
如果长时间未打开，您也可以点击刷新试试。

下载文档到电脑，查找使用更方便

亲，本站95%以上的标准规范都面向会员免费，办理VIP会员下载更省钱，平均每篇不到2元

立即下载 VIP免费下载

标签： #预应力 #混凝土 #预应力混凝土

摘要：

本规范文档FHWA-ICT-25-002专注于研究预制预应力混凝土横向裂缝桥面板梁的测试、分析与荷载额定值评定方法。针对桥梁结构中常见的横向裂缝问题，该标准系统性地提供了从试验设计、数据采集到结构性能评估的完整技术路径。文档通过对带裂缝梁体的力学行为进行有限元分析与荷载试验验证，明确了裂缝对预应力构件承载力、刚度及疲劳寿命的影响规律，并在此基础上提出了修正后的荷载额定值计算流程。该规范适用于交通基础设施管理部门、桥梁检测机构及设计单位，对于保障老旧或受损预制预应力混凝土桥梁的安全运营、优化维护策

展开>> 收起<<

FHWA-ICT-25-002 预制预应力混凝土横向裂缝桥面板梁的测试、分析和荷载额定值 Testing, Analysis, and Load Rating of Precast Prestressed Concrete Deck Beams with Transverse Cracks.pdf

共82页,预览3页

还剩页未读，继续阅读

声明：本文档系会员上传，若文档所含内容侵犯了您的版权或隐私，请立即通知，我们立即给予侵权申诉删除！

FHWA-ICT-25-002 预制预应力混凝土横向裂缝桥面板梁的测试、分析和荷载额定值 Testing, Analysis, and Load Rating of Precast Prestressed Concrete Deck Beams with Transverse Cracks

相关推荐

开通VIP享超值会员特权

相关内容

热门标签

举报选择: