مدل سازی عملکرد پیچ برای یک لنگر
ترجمه نشده

مدل سازی عملکرد پیچ برای یک لنگر

عنوان فارسی مقاله: آزمایش و مدل سازی عملکرد پیچ برای یک لنگر بعد از نصب قرار گرفته در معرض ترکیب نیروی برشی و نیروی کششی
عنوان انگلیسی مقاله: Testing and modeling of dowel action for a post-installed anchor subjected to combined shear force and tensile force
مجله/کنفرانس: سازه های مهندسی – Engineering Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه، زلزله
کلمات کلیدی فارسی: لنگر بعد از نصب، مقاوم سازی لرزه ای، عملکرد پیچ، تنش ترکیبی، رفتار مکانیکی، سازه های بتونی، تنش حمایتی
کلمات کلیدی انگلیسی: Post-installed anchor، Seismic retrofit، Dowel action، Combined stress، Mechanical behavior، Concrete structures، Supporting stress
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.engstruct.2019.05.086
دانشگاه: College of Environmental Technology, Muroran Institute of Technology, Japan
صفحات مقاله انگلیسی: 8
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 3.604 در سال 2018
شاخص H_index: 114 در سال 2019
شاخص SJR: 1.628 در سال 2018
شناسه ISSN: 0141-0296
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: بله
آیا این مقاله مدل مفهومی دارد: دارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12445
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست مطالب (انگلیسی)

Abstract

1. Introduction

2. Experimental program

3. Experimental results

4. Proposed model

5. Adaptability of proposed model to experimental results

6. Conclusions

Acknowledgment

Appendix A. Supplementary material

Research Data

References

بخشی از مقاله (انگلیسی)

Abstract

In seismically active regions, the resistance of buildings against earthquakes must be improved. Post-installed anchors are generally used to connect retrofitting members to existing concrete members of a structure. However, research on the mechanical behavior of post-installed anchors subjected to combined shear and tensile stress is insufficient. Therefore, in this study, loading tests were conducted on anchor bolts by applying cyclic shear loading and constant tensile forces. Additionally, a mechanical model was constructed to evaluate the experimental results. In this model, the shear force was equal to the sum of the bending resistant force at the plastic hinge, the supporting stress of the concrete, and the shear component of the tensile stress of the anchor bolt. The results demonstrate that, with increasing tensile force, the shear force decreases and the joint separation increases. In addition, the proposed model was shown to reasonably replicate the shear load and slip relationship determined from experimentation results.

Introduction

In seismically active regions, seismic retrofits are often used to improve the resistance of buildings against earthquakes. Commonly, retrofitting is achieved by connecting strengthening members to existing members of a structure by using post-installed anchors. During an earthquake, these anchors distribute the shear stress by dowel action and catenary action in the reinforced concrete structures [1], therefore post-installed anchors are very vital elements. Although the retrofitting members are typically internally connected within an existing structure, the method of externally connecting them is gaining popularity. Fig. 1 shows an image of an external seismic retrofit. The main advantage of an externally connected seismic retrofit, as opposed to its internally connected counterpart, is that the construction will not obstruct the internal functions of the building. At the joints of such structures, a tensile force is caused by bending moments acting between the existing and expanding frames. Therefore, the joints of the structures with externally connected retrofits are subjected to both shear and tensile forces. However, it is thought that the vertical loading slightly affects the shear strengths of the post-installed anchors, but this paper focuses on the shear behaviors as an early step in the investigation of the anchors.