Carbon dioxide(CO_(2))is an attractive C1 building block in chemical synthesis due to its abundance,availability and sustainability.However,the low reactivity and high stability generally limits its transformations un...Carbon dioxide(CO_(2))is an attractive C1 building block in chemical synthesis due to its abundance,availability and sustainability.However,the low reactivity and high stability generally limits its transformations under mild conditions to value added chemicals.Recent advances in flow chemistry provide effective means for the chemical transformation of CO_(2),and many new methods and techniques that fully utilized the advantages of continuous flow platforms for the chemical fixation of CO_(2)have been realized.In view of the rapid development and the urgent need for continuous transformation of CO_(2),herein we wish to present an update of the recent advances in this research area.展开更多
The Prefabricated Cage System (PCS) has the advantages of high bearing capacity and good ductility. Meanwhile, it is convenient for factory production and it is beneficial to the cost savings, construction period shor...The Prefabricated Cage System (PCS) has the advantages of high bearing capacity and good ductility. Meanwhile, it is convenient for factory production and it is beneficial to the cost savings, construction period shortening. Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of the whole structure. Thus systematically study on the seismic behavior of PCS concrete side joint is necessary. This paper presents a finite element study on behavior of the side joint under seismic loading. In the finite element model, PCS concrete and the reinforced concrete (RC) is modeled by the solid element and fiber-beam element, respectively. The numerical results is compared with the experimental results and it is found that the results of model based on fiber-beam element is in better agreement with the experimental results than solid clement model. In addition, the overall seismic behavior of the side joints in PCS concrete is better than that of the RC with the same strength.展开更多
基金The financial support from the National Key Research and Development Program of China(No.2020YFA0710200)National Natural Science Foundation of China(No.22171090)+1 种基金the Shanghai Science and Technology Innovation Action Plan(No.20JC1416900)the Fundamental Research Funds for the Central Universities is highly appreciated。
文摘Carbon dioxide(CO_(2))is an attractive C1 building block in chemical synthesis due to its abundance,availability and sustainability.However,the low reactivity and high stability generally limits its transformations under mild conditions to value added chemicals.Recent advances in flow chemistry provide effective means for the chemical transformation of CO_(2),and many new methods and techniques that fully utilized the advantages of continuous flow platforms for the chemical fixation of CO_(2)have been realized.In view of the rapid development and the urgent need for continuous transformation of CO_(2),herein we wish to present an update of the recent advances in this research area.
基金The authors appreciate the financial support from the National Key Research and Development Program of China (Nos. 2016YFC0701802,2016YFC0701507)Anhui Provincial Natural Science Foundation (No. 1908085ME144).In addition, thanks to Prof. Halil Sezen of Ohio State University for responding to the email and related experimental data.
文摘The Prefabricated Cage System (PCS) has the advantages of high bearing capacity and good ductility. Meanwhile, it is convenient for factory production and it is beneficial to the cost savings, construction period shortening. Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of the whole structure. Thus systematically study on the seismic behavior of PCS concrete side joint is necessary. This paper presents a finite element study on behavior of the side joint under seismic loading. In the finite element model, PCS concrete and the reinforced concrete (RC) is modeled by the solid element and fiber-beam element, respectively. The numerical results is compared with the experimental results and it is found that the results of model based on fiber-beam element is in better agreement with the experimental results than solid clement model. In addition, the overall seismic behavior of the side joints in PCS concrete is better than that of the RC with the same strength.
