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Online since: June 2013
Authors: Mihai Budescu, Ionut Ovidiu Toma, Daniel Covatariu, Irina Lungu
Evaluation of the Load Carrying Capacity of Short RC Columns Strengthened with a Novel Cementitious Material by Using FEA
Ionut Ovidiu TOMA1,a, Daniel COVATARIU1,b, Irina LUNGU2,c
and Mihai BUDESCU1,d
1Technical University “Gheorghe Asachi of Iasi”, Faculty of Civil Engineering and Building Services, Department of Structural Mechanics, no. 43rd, Prof.dr.doc.
Mangeron Blvd., 700050, Iasi, Romania 2Technical University “Gheorghe Asachi of Iasi”, Faculty of Civil Engineering and Building Services, Department of Transportation Infrastructure and Foundations, no. 43rd, Prof.dr.doc.
The recent advances in computational power coupled with accurate mathematical models have made FEM an indispensable tool for investigating complex loading states and material behavior that are frequently met in civil engineering.
Strengthening of existing RC columns is becoming a pressing issue in the field of civil engineering due to the necessity of meeting new safety requirements for the buildings located in active seismic areas.
Fig. 1 Collapsed short column in a parking place during the 1999 Chi-Chi earthquake in Taiwan [3] Fig. 2 Collapsed trapped column during the 2003 earthquake in Algeria [4] Fig. 3 Strengthened bridge pier for the shinkansen tracks, by means of precast concrete elements, near Hiroshima, Japan (authors’ collection) Numerical simulations by means of the Finite Element Method (FEM) have become a valuable and important tool in the field of Civil Engineering.
Mangeron Blvd., 700050, Iasi, Romania 2Technical University “Gheorghe Asachi of Iasi”, Faculty of Civil Engineering and Building Services, Department of Transportation Infrastructure and Foundations, no. 43rd, Prof.dr.doc.
The recent advances in computational power coupled with accurate mathematical models have made FEM an indispensable tool for investigating complex loading states and material behavior that are frequently met in civil engineering.
Strengthening of existing RC columns is becoming a pressing issue in the field of civil engineering due to the necessity of meeting new safety requirements for the buildings located in active seismic areas.
Fig. 1 Collapsed short column in a parking place during the 1999 Chi-Chi earthquake in Taiwan [3] Fig. 2 Collapsed trapped column during the 2003 earthquake in Algeria [4] Fig. 3 Strengthened bridge pier for the shinkansen tracks, by means of precast concrete elements, near Hiroshima, Japan (authors’ collection) Numerical simulations by means of the Finite Element Method (FEM) have become a valuable and important tool in the field of Civil Engineering.
Online since: October 2011
Authors: Hui Ma, Xiang Chao Shi, Ming Zhong Gao
The monitoring is the most important guarantee for safety construction and operation in civil engineering.
Journal of Rock Mechanics and Engineering, Vol.
Journal of Rock Mechanics and Engineering, Vol.
Chinese civil engineering society of tunnel and underground engineering branch of the 11 th conference proceedings (2000)
Bridge and Culvert Engineering, Vol. 1 (2005), p. 56~59
Journal of Rock Mechanics and Engineering, Vol.
Journal of Rock Mechanics and Engineering, Vol.
Chinese civil engineering society of tunnel and underground engineering branch of the 11 th conference proceedings (2000)
Bridge and Culvert Engineering, Vol. 1 (2005), p. 56~59
Online since: August 2013
Authors: Shu Hong Wang, Lei Jiang, Jiang Wang
Analysis of the Earth Surface Subsidence Caused By the Dewatering of Shenyang Subway in China
Shuhong WANG1,a, Lei JIANG2,b and Jiang WANG3,c
1School of Resource and Civil Engineering, Northeastern University, Shenyang, China 110004
2School of Resource and Civil Engineering, Northeastern University, Shenyang, China 110004
3School of Resource and Civil Engineering, Northeastern University, Shenyang, China 110004
aEmail:wangshuhong@mail.neu.edu.cn, bEmail:kdjianglei@126.com, cEmail:wangjiang.only@163.com
Keywords: Dewatering, Subsidence, Numerical Simulation, Subway Construction
Abstract: During excavation in deep foundation pit, the deformation of soil and earth surface caused by engineering dewatering is an important factor to affect engineering safety.
Fig.1 Schematic diagram of numerical model at Dianye Park (section VA) Fig.2 Numerical model in FLAC 3D The load from the buildings is calculated as follows: Load=13KN/m2×A×S. 13 KN/m2 is the load of each story of the standard civil building, A represents the area of the building and S represents the stories of the building.
Fig.1 Schematic diagram of numerical model at Dianye Park (section VA) Fig.2 Numerical model in FLAC 3D The load from the buildings is calculated as follows: Load=13KN/m2×A×S. 13 KN/m2 is the load of each story of the standard civil building, A represents the area of the building and S represents the stories of the building.
Online since: December 2013
Authors: Shi Man Sun, Jun Ku Xu
Civil aviation has become the breach of the climate change negotiations.
Shanghai Pudong project phase Ⅱ and its supporting projects, include runway 2, runway 3, T2 terminal area, comprehensive supporting engineering, west freight area engineering and so on, the focus of the green design is the terminal and energy center, as is shown in Fig. 1.
By 2030, with the new development of China, a safe, efficient, high quality and green modern civil aviation system will be completed in an all-round way, the historic change from civil aviation large power to civil aviation strong power will be achieved, and China will become the country which leads the world civil aviation development.
The sustainable development report of civil airport of China(internal document, 2010, In Chinese)
Study on the diversity of regional Development of Passenger Throughput of civil airports in China.
Shanghai Pudong project phase Ⅱ and its supporting projects, include runway 2, runway 3, T2 terminal area, comprehensive supporting engineering, west freight area engineering and so on, the focus of the green design is the terminal and energy center, as is shown in Fig. 1.
By 2030, with the new development of China, a safe, efficient, high quality and green modern civil aviation system will be completed in an all-round way, the historic change from civil aviation large power to civil aviation strong power will be achieved, and China will become the country which leads the world civil aviation development.
The sustainable development report of civil airport of China(internal document, 2010, In Chinese)
Study on the diversity of regional Development of Passenger Throughput of civil airports in China.
Online since: January 2011
Authors: Jun Deng, Pei Yan Huang
Main Crack Propagation Behaviour of RC Beams Strengthened with CFRP under Fatigue Load
Jun Deng1, a, Peiyan Huang2,b
1Faculty of Civil & Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
22School of Civil Engineering & Transportation, South China University of Technology, Guangzhou, 510640, China
ajdeng@gdut.edu.cn, bpyhuang@scut.edu.cn
Keywords: Carbon fibre reinforced polymer, Reinforced concrete beam, Strengthening, Fracture mechanics, Fatigue crack propagation rate, Bending load
Abstract.
The fatigue performance and durability of the reinforced concrete (RC) beams strengthened with fibre reinforced polymer (FRP) laminates is an advanced research topic in civil engineering.
Beitelman: Journal of Structural Engineering Vol. 125 (1999), p. 613 [7] R.A.
Zhao: Key Engineering Materials Vol. 306 (2006), p. 1343 [9] X.
The fatigue performance and durability of the reinforced concrete (RC) beams strengthened with fibre reinforced polymer (FRP) laminates is an advanced research topic in civil engineering.
Beitelman: Journal of Structural Engineering Vol. 125 (1999), p. 613 [7] R.A.
Zhao: Key Engineering Materials Vol. 306 (2006), p. 1343 [9] X.
Online since: August 2013
Edited by: Ai Jie Wang, Kin Che Lam, Ren Jie Dong, George Zhao
The 334 papers are grouped as follows:
Chapter 1: Development and Utilization of Solar Energy;
Chapter 2: Development and Utilization of Biomass Energy;
Chapter 3: Development and Utilization of Wind Energy;
Chapter 4: Nuclear Energy and Nuclear Engineering;
Chapter 5: Hydrogen, Fuel Cell and Related Technologies;
Chapter 6: Storage Battery and Other Energy Sources;
Chapter 7: Energy-Saving Technology and Energy Conservation;
Chapter 8: Energy Materials and Technology;
Chapter 9: Energy Chemical Engineering and Processes;
Chapter 10: Energy Security and Clean Use;
Chapter 11: New Energy Vehicles, Engine and Electric Vehicles;
Chapter 12: Building Materials and Technologies, Energy-Saving Buildings, Civil Engineering.
Structural Health Monitoring of Steel Frame Structure by Experimental Modal Parameter Identification
Online since: September 2020
Authors: Bulbul Ahmed, Florea Dinu, Ioan Marginean
Bruel & Kjaer experimental modal analysis technique is recently used for civil engineering structures for modal parameters estimation.
Introduction Steel structures are getting more importance day by day for the important structures in the field of civil engineering.
Structural identification studies for the important and massive civil engineering structures like long span bridges, high rise buildings, towers, subjected to the undesired and/or unexpected hazards.
Journal of Bridge Engineering 15 (2009) 553-64
[16] Wei-Xin Ren and Zhou-Hong Zong, Output-only modal parameter identification of civil engineering structures, Structural Engineering and Mechanics, 17(3-4) (2004) 000-000.
Introduction Steel structures are getting more importance day by day for the important structures in the field of civil engineering.
Structural identification studies for the important and massive civil engineering structures like long span bridges, high rise buildings, towers, subjected to the undesired and/or unexpected hazards.
Journal of Bridge Engineering 15 (2009) 553-64
[16] Wei-Xin Ren and Zhou-Hong Zong, Output-only modal parameter identification of civil engineering structures, Structural Engineering and Mechanics, 17(3-4) (2004) 000-000.
Online since: June 2016
Authors: Rachid Chebili, Mohamed Amine Touzout
Shape optimization of elliptical and vaulted reinforced concrete domes
Mohamed Amine Touzout1, a *, Rachid Chebili 2, b
1 Laboratory of Research in Civil engineering LRGC, University of Biskra, BP145 Biskra 07000, Algeria
2 Laboratory of Research in Civil engineering LRGC, University of Biskra, BP145 Biskra 07000, Algeria
a touzout.mohamedamine@gmail.com, b racchebili@yahoo.fr
Keywords: Structural optimization, Concrete structures, Finite element analysis, Proper orthogonal decomposition, Genetic algorithm, Radial basis functions
Abstract.
Optimum design in civil structures like domes and vaults is a very old and ongoing research field.
Introduction The use of concrete shell structures in construction is motivated by their structural efficient response to transverse loading, which made them a solution that satisfies the needs of covering large spaces in different civil engineering projects.
Vizotto, Computational generation of free-form shells in architectural design and civil engineering, Automation in Construction, 19 (2010) 1087-1105
Ramm, Form finding of shells by structural optimization, Engineering with Computers Engineering with Computers: An International Journal of Simulation-Based Engineering, 9 (1993) 27-35
Optimum design in civil structures like domes and vaults is a very old and ongoing research field.
Introduction The use of concrete shell structures in construction is motivated by their structural efficient response to transverse loading, which made them a solution that satisfies the needs of covering large spaces in different civil engineering projects.
Vizotto, Computational generation of free-form shells in architectural design and civil engineering, Automation in Construction, 19 (2010) 1087-1105
Ramm, Form finding of shells by structural optimization, Engineering with Computers Engineering with Computers: An International Journal of Simulation-Based Engineering, 9 (1993) 27-35
Online since: December 2014
Authors: Jin Sheng Han, Xue Wen Wang, Li Yi Wang, Min Ji
Introduction
As a kind of excellent combination structure, concrete filled steel tube (CFT) structures have been used widely in civil engineering.
Besides, most of the formulas are deduced from the test results of small size specimens rather than large size specimens which are practically used in civil engineering.
Furthermore, some reasonable suggestions are benefit on choosing the suitable formula for engineering design.
Some suggestions are made to choose the suitable formula, which give a reference for civil engineer
Vol.36 (2004), p.1678 (in Chinese) [11]Jinsheng Han,Yuli Dong, Zhaodong Xu , Shuping Cong and Wenrang Cheng: Civil architectural and environmental engineering, Iss.3 (2009), p.11 (in Chinese)
Besides, most of the formulas are deduced from the test results of small size specimens rather than large size specimens which are practically used in civil engineering.
Furthermore, some reasonable suggestions are benefit on choosing the suitable formula for engineering design.
Some suggestions are made to choose the suitable formula, which give a reference for civil engineer
Vol.36 (2004), p.1678 (in Chinese) [11]Jinsheng Han,Yuli Dong, Zhaodong Xu , Shuping Cong and Wenrang Cheng: Civil architectural and environmental engineering, Iss.3 (2009), p.11 (in Chinese)
Online since: July 2011
Authors: Jiong Feng Liang, Ze Ping Yang, Zhi Ming Qiu
Calculation of Flexural Capacity of High-strength Reinforced Concrete Beams Strengthened with FRP
Jiong-Feng Liang 1,2, a, Ze-Ping Yang 1,b and Zhi-Ming Qiu 1,c
1 College of Civil and Environmental Engineering, East China Institue of Technology, Fuzhou,Jiangxi,344000,China
2 College of Civil Engineering, Xi’an University of Architecture&Technology, Xi’an, Shangxi,710055,China
a jiongfeng108@126.com, b 34930741@qq.com, c dengy666@126.com
Keywords: FRP, High-strength, Flexural, Beams.
And the correlation equation of flexural capacity on the cross section of high-strength reinforced concrete beams strengthened with FRP is deduced according to different types of failure.The correlation equation is shown to be in good agreement with the experimental results, which can be referred to engineering application.
Introduction In recent years, high-strength concrete structure with high carrying capacity, reducing structural dead weight, increasing structure area, lower project cost, etc., adapt to modern structure to span, overload and towering trends, are being widely used in engineering practice,which are able to adapt to a modern structure to a large span, heavy and high-rise development trend[1]~[3].
However, the design and construction deficiencies in existing building , the transfer function of the building , and the impact of the environment and natural disasters, etc., caused some problems with the structure itself, resulting in performance degradation, which calls for high-strength concrete structure reinforcement and repair.And FRP (fiber reinforce polymer) with a corrosion-resistant, high strength, light weight, good durability are being increasingly applied to civil engineering structures [4].At present, the application and research about FRP focused on reinforced concrete structure strengthened with FRP in civil engineering, to be less for high-strength reinforced steel concrete structure strengthened with FRP.
And the correlation equation of flexural capacity on the cross section of high-strength reinforced concrete beams strengthened with FRP is deduced according to different types of failure.The correlation equation is shown to be in good agreement with the experimental results, which can be referred to engineering application.
Introduction In recent years, high-strength concrete structure with high carrying capacity, reducing structural dead weight, increasing structure area, lower project cost, etc., adapt to modern structure to span, overload and towering trends, are being widely used in engineering practice,which are able to adapt to a modern structure to a large span, heavy and high-rise development trend[1]~[3].
However, the design and construction deficiencies in existing building , the transfer function of the building , and the impact of the environment and natural disasters, etc., caused some problems with the structure itself, resulting in performance degradation, which calls for high-strength concrete structure reinforcement and repair.And FRP (fiber reinforce polymer) with a corrosion-resistant, high strength, light weight, good durability are being increasingly applied to civil engineering structures [4].At present, the application and research about FRP focused on reinforced concrete structure strengthened with FRP in civil engineering, to be less for high-strength reinforced steel concrete structure strengthened with FRP.