The weak layer of steel concrete (RC) frame structure is easy to destroy under the action of the earthquake, the damage mechanism is more difficult to control. Severe damage to the building structure after the earthqu...The weak layer of steel concrete (RC) frame structure is easy to destroy under the action of the earthquake, the damage mechanism is more difficult to control. Severe damage to the building structure after the earthquake, resulting in too high repair costs or having to dismantle and rebuild. In order to improve and enhance the anti-seismic performance of the RC framework structure, energy consumption devices are added between the frame columns to achieve the effect of reducing the RC frame structure damage and improving the seismic performance of the RC frame structure. In this article, high-performance fiber-enhanced cement base composite materials fabricated energy consumption walls are prepared in the RC frame structure to form a new type of seismic structure system of RC frame-prefabricated HPFRCC energy consumption wall. This article uses the power timing analysis of the ABAQUS finite element software to study the anti-seismic performance, influencing factors and energy consumption distribution of the RC frame-prefabricated HPFRCC energy wall structural system.展开更多
As one of the most important components of a construction, the outdoor wall plays a significant role in heat insulation, heat preservation and energy saving. Improving the heat insulation of the outdoor wall is the fo...As one of the most important components of a construction, the outdoor wall plays a significant role in heat insulation, heat preservation and energy saving. Improving the heat insulation of the outdoor wall is the focus of researchers. This paper reviews the development of the compound outdoor wall and introduces the structure of the compound outdoor wall of wood framed construction. Methods for measuring the thermal characteristics of the compound outdoor wall including the steady and unsteady state thermal characteristics, tests in laboratory and field, and researches on the thermal characteristics of the compound outdoor wall are elaborately reviewed. Researches on the thermal characteristics of the compound outdoor wall will promote the further development of wood framed construction in China.展开更多
Molecular dynamics simulations demand an unprecedented combination of accuracy and scalability to tackle grand challenges in catalysis and materials design.To bridge this gap,we present AlphaNet,a local-frame-based eq...Molecular dynamics simulations demand an unprecedented combination of accuracy and scalability to tackle grand challenges in catalysis and materials design.To bridge this gap,we present AlphaNet,a local-frame-based equivariant model that simultaneously improves computational efficiency and predictive precision for interatomic interactions.By constructing equivariant local frames with learnable geometric transitions and enabling contractions through spatial domain and temporal domain,AlphaNet enhances the representational capacity of atomic environments,achieving stateof-the-art accuracy in energy and force predictions.Extensive benchmarks on large-scale datasets spanningmolecular reactions,crystal stability,and surface catalysis(Matbench Discovery and OC2M)demonstrate its superior performance over existing neural network interatomic potentials while ensuring scalability across diverse system sizes with varying types of interatomic interactions.The synergy of accuracy,efficiency,and transferability positions AlphaNet as a transformative tool for modeling multiscale phenomena,decoding dynamics in catalysis and functional interfaces,with direct implications for accelerating the discovery of complex molecular systems and functional materials.Our code and data are available at https://github.com/zmyybc/AlphaNet.展开更多
文摘The weak layer of steel concrete (RC) frame structure is easy to destroy under the action of the earthquake, the damage mechanism is more difficult to control. Severe damage to the building structure after the earthquake, resulting in too high repair costs or having to dismantle and rebuild. In order to improve and enhance the anti-seismic performance of the RC framework structure, energy consumption devices are added between the frame columns to achieve the effect of reducing the RC frame structure damage and improving the seismic performance of the RC frame structure. In this article, high-performance fiber-enhanced cement base composite materials fabricated energy consumption walls are prepared in the RC frame structure to form a new type of seismic structure system of RC frame-prefabricated HPFRCC energy consumption wall. This article uses the power timing analysis of the ABAQUS finite element software to study the anti-seismic performance, influencing factors and energy consumption distribution of the RC frame-prefabricated HPFRCC energy wall structural system.
基金This research is sponsored by 948 item-Application of structural materials of Wood framed construction.
文摘As one of the most important components of a construction, the outdoor wall plays a significant role in heat insulation, heat preservation and energy saving. Improving the heat insulation of the outdoor wall is the focus of researchers. This paper reviews the development of the compound outdoor wall and introduces the structure of the compound outdoor wall of wood framed construction. Methods for measuring the thermal characteristics of the compound outdoor wall including the steady and unsteady state thermal characteristics, tests in laboratory and field, and researches on the thermal characteristics of the compound outdoor wall are elaborately reviewed. Researches on the thermal characteristics of the compound outdoor wall will promote the further development of wood framed construction in China.
基金supported by National Key Research and Development Project(2022YFA1503000)National Natural Science Foundation of China(No.92261111)+1 种基金the NSFC Center for Single-Atom Catalysis(No.22388102)We are also grateful to the Center of High-Performance Computing at Tsinghua University for providing computational resources.We also acknowledge the Welch Foundation(F-1841)for support.We thank Prof.Aditi Krishnapriyan for her insightful suggestions and valuable discussions.
文摘Molecular dynamics simulations demand an unprecedented combination of accuracy and scalability to tackle grand challenges in catalysis and materials design.To bridge this gap,we present AlphaNet,a local-frame-based equivariant model that simultaneously improves computational efficiency and predictive precision for interatomic interactions.By constructing equivariant local frames with learnable geometric transitions and enabling contractions through spatial domain and temporal domain,AlphaNet enhances the representational capacity of atomic environments,achieving stateof-the-art accuracy in energy and force predictions.Extensive benchmarks on large-scale datasets spanningmolecular reactions,crystal stability,and surface catalysis(Matbench Discovery and OC2M)demonstrate its superior performance over existing neural network interatomic potentials while ensuring scalability across diverse system sizes with varying types of interatomic interactions.The synergy of accuracy,efficiency,and transferability positions AlphaNet as a transformative tool for modeling multiscale phenomena,decoding dynamics in catalysis and functional interfaces,with direct implications for accelerating the discovery of complex molecular systems and functional materials.Our code and data are available at https://github.com/zmyybc/AlphaNet.
