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《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 411-428 doi: 10.1007/s11709-023-0928-3
关键词: pre-stressed concrete sleeper ultrahigh performance fiber-reinforced concrete pull-out test static bending test steel fiber aspect ratio volume fraction
Ali Fadhil NASER, Zonglin WANG
《结构与土木工程前沿(英文)》 2013年 第7卷 第2期 页码 164-177 doi: 10.1007/s11709-013-0196-8
关键词: structural performance steel plates external pre-stressing cracks grouting method static
Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 352-360 doi: 10.1007/s11709-017-0453-3
Concrete members historically have used either pre-stressed steel or steel bars. In recent years there has been an increased interest in the use of fiber reinforced polymer (FRP) materials. However, the flexure behavior of a hybrid system reinforced by the combination of pre-stressed steel and glass fiber reinforced (GFRP) is still relatively unknown. The purpose of this work is to study this. Two slabs of 100 and 150-millimeter thickness, with a span of 2.1 m reinforced with both pre-stressing steel and GFRP were constructed and tested to failure using ACI 318-11 and ACI 440.1R-15. The concrete had strength of 31 MPa and the slabs were respectively reinforced with 5#4 bars and 3#5 bars. Each slab had 37.41 mm2 prestressing wire with a failure stress of 1722.5 MPa. The experimental flexural strength and deflection of slabs were compared with their respective sizes theoretical slabs. The theoretical slabs were either reinforced with pre-stressed steel or GFRP rebars, or a hybrid system. It was found that the hybrid system produces better results.
Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete
《结构与土木工程前沿(英文)》 页码 1326-1340 doi: 10.1007/s11709-023-0014-x
Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting
John O’MALLEY, Hakim S. ABDELGADER,
《结构与土木工程前沿(英文)》 2010年 第4卷 第1期 页码 127-132 doi: 10.1007/s11709-010-0007-4
张登春
《中国工程科学》 2004年 第6卷 第9期 页码 66-72
空调车内气流组织研究是车厢内热环境控制的基础,合理的车内气流组织可有效地改善乘客的冷热舒适性。采用k-ε湍流模型对25K型空调硬卧车内气流组织进行了数值模拟,研究了不同送风方式和送风参数下车内空气流场和温度场分布规律,并与实验结果进行了对照,两者基本一致。研究结果对于改善硬卧车内人体冷热舒适性提供了理论依据,对车内气流组织优化设计有指导意义。
Siu-Lai CHAN, Yaopeng LIU, Andy LEE,
《结构与土木工程前沿(英文)》 2010年 第4卷 第3期 页码 376-382 doi: 10.1007/s11709-010-0086-2
关键词: tension system glass wall nonlinear analysis pre-tensioning second-order analysis
A pre-compensation method of the systematic contouring error for repetitive command paths
D. L. ZHANG,Y. H. CHEN,Y. P. CHEN
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 367-372 doi: 10.1007/s11465-015-0367-5
For a repetitive command path, pre-compensating the contouring error by modifying the command path is practical. To obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagation neural network to extract the function of systematic contouring errors. Furthermore, by using the extracted function, the contouring error can be easily pre-compensated. The experiment results verify that the proposed compensation method can effectively reduce contouring errors.
关键词: contouring error pre-compensation motion control system back propagation (BP) neural network
Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng
《环境科学与工程前沿(英文)》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1084-1
A novel two sludge pre-A2NSBR system was developed. Advanced N and P removal was optimized to treat real domestic wastewater. Nitrifiers and PAOs were enriched with 19.41% and 26.48%, respectively. Acetate was demonstrated as the high-quality carbon source type.
关键词: Denitrifying phosphorus removal C/N ratio Nitrate recycling Carbon source type Biological nutrient removal Pre-A2NSBR system
Techno-economic comparison of three technologies for pre-combustion CO
Simon Roussanaly, Monika Vitvarova, Rahul Anantharaman, David Berstad, Brede Hagen, Jana Jakobsen, Vaclav Novotny, Geir Skaugen
《化学科学与工程前沿(英文)》 2020年 第14卷 第3期 页码 436-452 doi: 10.1007/s11705-019-1870-8
关键词: carbon capture and storage (CCS) techno-economic comparison pre-combustion capture physical solvent low-temperature capture
Hailin WANG
《能源前沿(英文)》 2019年 第13卷 第3期 页码 571-578 doi: 10.1007/s11708-019-0640-0
关键词: China’s National Determined Contribution emission reduction potential scenario analysis CO2 emissions peak
Virtual pre-assembly for large steel structures based on BIM, PLP algorithm, and 3D measurement
Ying ZHOU, Wan WANG, Hanbin LUO, Yan ZHANG
《工程管理前沿(英文)》 2019年 第6卷 第2期 页码 207-220 doi: 10.1007/s42524-019-0016-5
关键词: steel structure pre-assembly BIM plane-line-point 3D measurement
Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault
Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1393-1404 doi: 10.1007/s11709-019-0563-1
关键词: pre-grouting stability analysis factor of safety discontinuity layout optimization
WU Xuelei, CHEN Lunqiang, PENG Yongzhen, WANG Pu, WANG Yayi
《环境科学与工程前沿(英文)》 2008年 第2卷 第2期 页码 236-240 doi: 10.1007/s11783-008-0008-x
Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG
《能源前沿(英文)》 2019年 第13卷 第3期 页码 483-493 doi: 10.1007/s11708-019-0631-1
关键词: marine engine natural gas methane turbulent jet ignition (TJI) pre-chamber
标题 作者 时间 类型 操作
Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete
期刊论文
Evaluation of the static and dynamic structural performance of segmental pre-stressed concrete box girder
Ali Fadhil NASER, Zonglin WANG
期刊论文
Hybrid flexural components: Testing pre-stressed steel and GFRP bars together as reinforcement for flexural
Mohammed FARUQI, Oved I. MATA, Francisco AGUINIGA
期刊论文
Investigation into viability of using two-stage (pre-placed aggregate) concrete in Irish setting
John O’MALLEY, Hakim S. ABDELGADER,
期刊论文
Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection
Siu-Lai CHAN, Yaopeng LIU, Andy LEE,
期刊论文
A pre-compensation method of the systematic contouring error for repetitive command paths
D. L. ZHANG,Y. H. CHEN,Y. P. CHEN
期刊论文
Optimization of denitrifying phosphorus removal in a pre-denitrification anaerobic/anoxic/post-aeration+ nitrification sequence batch reactor (pre-A
Weihua Zhao, Meixiang Wang, Jianwei Li, Yu Huang, Baikun Li, Cong Pan, Xiyao Li, Yongzhen Peng
期刊论文
Techno-economic comparison of three technologies for pre-combustion CO
Simon Roussanaly, Monika Vitvarova, Rahul Anantharaman, David Berstad, Brede Hagen, Jana Jakobsen, Vaclav Novotny, Geir Skaugen
期刊论文
Virtual pre-assembly for large steel structures based on BIM, PLP algorithm, and 3D measurement
Ying ZHOU, Wan WANG, Hanbin LUO, Yan ZHANG
期刊论文
Quantitatively assessing the pre-grouting effect on the stability of tunnels excavated in fault
Xiao YAN, Zizheng SUN, Shucai LI, Rentai LIU, Qingsong ZHANG, Yiming ZHANG
期刊论文
Experimental study of nitrite accumulation in pre-denitrification biological nitrogen removal process
WU Xuelei, CHEN Lunqiang, PENG Yongzhen, WANG Pu, WANG Yayi
期刊论文