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“慶祝建校四十年”系列學(xué)術(shù)活動(dòng)之三元名家論壇:Rocking Shallow Foundation for improved seismic performance of soil-structure system
作者:     供圖:     供圖:     日期:2024-07-29     來源:    

講座主題:Rocking Shallow Foundation for improved seismic performance of soil-structure system(搖擺基礎(chǔ):抗震工程設(shè)計(jì)的新理念)

專家姓名:Lijun Deng

工作單位:加拿大阿爾伯塔大學(xué)

講座時(shí)間:2024年08月01日09:30-10:30

講座地點(diǎn):土木學(xué)院A302

主辦單位:煙臺(tái)大學(xué)土木工程學(xué)院

內(nèi)容摘要:

The design of conventional shallow foundations is well known to geotechnical engineers, owing to the contributions of Terzaghi, Meyerhof, Vesic, and so on. The foundations are designed for the bearing capacity (a.k.a. ultimate limit state) and settlement (a.k.a., serviceability limit state); the serviceability usually governs and often results in an excessively large factor of safety against the bearing failure. Such foundations are considered “fixed” base. The philosophy of fixed-base foundations sometimes led to surprisingly poor performance of soil-structure systems when an earthquake struck, as observed in many case studies. The opposite philosophy, which allows the uplift and detachment of shallow foundations (termed “rocking foundations”), has drawn the attention of researchers and practitioners. The idea of rocking foundation has been accepted in the seismic design guides of Canada, USA, and New Zealand. However, further research is needed to delineate the engineering performance. This seminar will introduce a research program on the performance of full-scale rocking systems subjected to cyclic loads in the field, carried out at UAlberta. The systems consist of a concrete footing, column, and superstructure mass. The performance indicators, including capacities, damping ratios, residual settlement, residual rotation, were quantified to pave the road for subsequent design procedures. Particularly, a method was developed to quantify the capacity of rocking foundations subjected to oblique cyclic loads.

主講人介紹:

鄧麗軍,加拿大阿爾伯塔大學(xué)土木與環(huán)境工程系副教授,2013年初入職阿爾伯塔大學(xué)。2012年博士畢業(yè)于加州大學(xué)戴維斯分校,2006和2003年獲清華大學(xué)水利工程系碩士和本科學(xué)位。巖土工程方向,主要研究領(lǐng)域包括基礎(chǔ)工程,土與結(jié)構(gòu)相互作用,巖土工程離心機(jī)模擬,土動(dòng)力學(xué),寒區(qū)巖土工程等。目前已獨(dú)立指導(dǎo)博士生(在讀和已畢業(yè))八名,碩士生近二十名,支持訪問學(xué)生學(xué)者12名。共發(fā)表期刊論文50余篇。獲得多項(xiàng)加拿大基金及工業(yè)界項(xiàng)目支持項(xiàng)目,總資助金額超過300萬加元。兩次獲巖土行業(yè)協(xié)會(huì)期刊Canadian Geotechnical Journal Editor's Choice獎(jiǎng)勵(lì),2019年獲西澳大利亞大學(xué)Gledden Senior Fellowship獎(jiǎng)勵(lì),論文(于和鄧2007)獲領(lǐng)跑者5000收錄。現(xiàn)任行業(yè)頂級(jí)期刊Canadian Geotechnical Journal 副主編,擔(dān)任加拿大巖土工程協(xié)會(huì)土力學(xué)與基礎(chǔ)工程分會(huì)主席(2023-2024),曾任阿爾伯塔加拿大華人教授協(xié)會(huì)(ACCP)主席(2020-2022)。

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