مقاله انگلیسی رایگان در مورد رفتار ساختاری تیرآهن های پیش تنیده برش خورده با بخش های Box پیش ساخته – اسپرینگر ۲۰۱۹

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مشخصات مقاله
ترجمه عنوان مقاله رفتار ساختاری تیرآهن های پس تنیده برش خورده با بخش های Box پیش ساخته
عنوان انگلیسی مقاله Structural Behavior of Spliced Post-Tensioned Girders with Precast Box Segments
انتشار مقاله سال ۲۰۱۹
تعداد صفحات مقاله انگلیسی ۱۱ صفحه
هزینه دانلود مقاله انگلیسی رایگان میباشد.
پایگاه داده نشریه اسپرینگر
نوع نگارش مقاله
مقاله پژوهشی (Research Article)
مقاله بیس این مقاله بیس نمیباشد
نمایه (index) DOAJ – Scopus – Master journals – JCR
نوع مقاله ISI
فرمت مقاله انگلیسی  PDF
ایمپکت فاکتور(IF)
۲٫۴۸۵ در سال ۲۰۱۸
شاخص H_index ۲۰ در سال ۲۰۱۹
شاخص SJR ۱٫۰۷۱ در سال ۲۰۱۸
شناسه ISSN ۱۹۷۶-۰۴۸۵
شاخص Quartile (چارک) Q1 در سال ۲۰۱۸
مدل مفهومی ندارد
پرسشنامه ندارد
متغیر دارد
رفرنس دارد
رشته های مرتبط مهندسی عمران
گرایش های مرتبط سازه، مدیریت ساخت
نوع ارائه مقاله
ژورنال
مجله  مجله بین المللی مواد و سازه های بتونی – International Journal of Concrete Structures and Materials
دانشگاه Department of Architectural Engineering, Kyung Hee University, Yongin, South Korea
کلمات کلیدی بتن پیش ساخته، پس تنیدگی، splice sleeve، بند برشی، تیرآهن برش خورده
کلمات کلیدی انگلیسی precast concrete، post-tension، splice sleeve، shear key، spliced girder
شناسه دیجیتال – doi
https://doi.org/10.1186/s40069-018-0331-y
کد محصول E12727
وضعیت ترجمه مقاله  ترجمه آماده این مقاله موجود نمیباشد. میتوانید از طریق دکمه پایین سفارش دهید.
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فهرست مطالب مقاله:
Abstract

۱-Introduction

۲-Experimental Program

۳- Test Results

۴- Summary and Conclusions

References

 

بخشی از متن مقاله:

Abstract

It is widely known that the precast segment method facilitates quality control and reduces the costs as well as the construction period. The method, however, has limited applicability since it causes structurally unstable behaviors due to stress concentration in the joints. Against this backdrop, this paper suggested precast segment joints for the improved structural performance and experimentally evaluated the structural performance of the proposed joints in terms of crack pattern, mode of failure, strain, maximum load and displacement ductility. In order to improve constructability as well as structural performance, this paper suggests joints combined with shear key, post tension and steel rod and conducts static load tests. The test results showed that, in terms of maximum load capacity, the resistance of a girder where shear key and post tension are applied to joint details stood at around 86.4% of a monolithic girder’s and demonstrated better ductility behaviors than the monolithic girder.

Introduction

Te precast segmental construction has been widely used in bridge construction due to many advantages such as excellent durability, low life-cycle costs, and quality control since the late 1960s. Te precast concrete segment (PCS) method is widely applied to building structures now as it ensures the high quality and reduces the construction period by minimizing on-site placement work (Wium and Buyukozturk 1984). However, the joints of the spliced girders represent locations of discontinuity through which compression and shear forces are transmitted. Te stifness of the joint can be weaker than those of monolithic girders (Wium and Buyukozturk 1984; Zhou et al. 2005). Nevertheless, there is little information not only on the behaviors and design methods of PCSapplied structures but also the joints between segments that play a signifcant role in these PCS-applied structures (Zhou et al. 2005). Finding it crucial to apply the shear key which ensures high shear resistance and ductility due to transversal interlocking, Zhou et al. (2005) conducted tests with the number of shear keys and the use of epoxy coating on the joint surfaces as variables to analyze efects of individual variables and propose a formula for calculating the shear strength of shear key. Buyukozturk et al. (1990) also considered segment joints as the most important element throughout design and construction, and evaluated the shear strength and deformation of joints through tests on the use of shear key and epoxy and the level of prestressing as variables. Miller et al. (1999) performed tests considering the location of shear key and grouting material as variables that can control the crack of shear key. Tadros et al. (1993) suggested two new methods of connection: one is by using jacking bracket and mechanical splice in pre-tensioned/post-tensioned precast concrete system to connect spliced girder; the other is by applying spacer strut and jacking bracket. It showed that the suggested one has more improved than the existing connection in the aspect of seismic resistance and structural integrity. Saleh et al.

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