کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4923301 | 1430692 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Post-fire residual slip resistance and shear capacity of high-strength bolted connection
ترجمه فارسی عنوان
مقاومت در برابر لغزش پس از آتش و ظرفیت برش اتصالات با مقاومت بالا
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کلمات کلیدی
پس از آتش، اتصال قوی با پیچ و مهره، مقاومت لغزش، ظرفیت برش، فرمول پیش بینی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
High-strength bolted connection is one of the main connecting forms of steel structure and its post-fire residual mechanical properties are important basis for post-fire evaluation and recovery of steel structure performance. This paper made an experimental study on slip resistance and shear behaviors of common engineering 8.8 s and 10.9 s high-strength bolted connection after high temperature, getting the load-displacement curves of high-strength bolted connection under different firing temperatures and cooling modes. The post-fire slip resistance and shear capacity of high-strength bolted connection were analyzed. Based on analysis of test data, it is found that post-fire slip resistance and shear capacity of high-strength bolted connection generally declined with the increase of the firing temperature. When the firing temperature is lower than 600 °C, slip resistance and shear capacity of high-strength bolted connection were similar with those under room temperature. However, when the firing temperature exceeds 600 °C, they declined quickly. The reduction factors of slip resistance and shear capacity at 900 °C reduced to about 0.35 and 0.75, respectively. The cooling mode could influence post-fire slip resistance and shear behaviors of bolted connection to a certain extent, but no explicit law was discovered, which needs further deep researches. Finally, the prediction formula concerning the reduction factors of post-fire slip resistance and shear capacity of high-strength bolted connection was proposed based on test data fitting, providing certain references for evaluation of post-fire residual performance and recovery of steel structures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 138, November 2017, Pages 65-71
Journal: Journal of Constructional Steel Research - Volume 138, November 2017, Pages 65-71
نویسندگان
Hongbo Liu, Dongyu Liu, Zhihua Chen, Yujie Yu,