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Online since: September 2013
Authors: Dan Dan Li, Kai Zhang, Hui Yuan
Those small dams and reservoirs have great functions of flood control, irrigation, water supply, hydropower and improving of ecology and environments, they have social, economical and environmental benefits and they are an important portion of flood control system in our country and hydraulic projects of civil engineering.
Then common and prominent problems which affect the safety of reservoirs have been summarized, and about 750 problems were found, in these problems, impounding condition is 46, preliminary work is 126, engineering construction is 91, implementation management and project quality is 152, engineering receiving inspection is 42 and operations management is 293.
Based on the above content, the problems were summed up according to impounding condition, preliminary work, engineering construction, implementation management and project quality, engineering receiving inspection and operations management, as shown in table 1.
Tab.1 The main problems found in special inspection of impounding safety Content of Problems Kind of Problems Impounding Condition Management of impounding is not standard 1 Impounding after reinforcement without acceptance 2 Impounding exceeding after reinforcement 3 Preliminary Work Procedure of the dam safety identification is not standard 4 Aptitude of the design organization for reinforcement is unqualified 5 Design of reinforcement does not agree with the conclusions of the dam safety identification 6 Lack of design of reinforcement 7 Design change does not implementing the procedure 8 Engineering Construction Constructions of crossing through dam are handled unqualified 9 Monitoring system have not been designed or implemented 10 Main constructions(dam, spillway, etc) were not completed according to design requirements 11 Metal structures were not completed according to design requirements 12 Implementation Management and Project Quality Construction and management and is not
standard 13 Modes of passing the flood season in construction period were not formulated or examined and approved 14 Quality and security risk exists in dams 15 Quality and security risk exists in spillways 16 Quality and security risk exists in constructions of crossing through dam 17 Quality and security risk exists in metal structures 18 Engineering Receiving Inspection Acceptance of project is not standardized 19 Problems exists in the inspection which could affect safety of the dam 20 Operations Management safety responsibility system of dam was not practicable 21 Lack of dispatching rules and scheduling 22 Without contingency plans of dam safety management 23 Maintenance system was not been built 24 Inspection and monitor were not enough 25 Lack of technicists for reservoir management 26 System reform of water resources management was not enough 27 Other management issues 28 The analysis of common problems exist in reservoirs Based on the main 28 category problems in statistics,
Then common and prominent problems which affect the safety of reservoirs have been summarized, and about 750 problems were found, in these problems, impounding condition is 46, preliminary work is 126, engineering construction is 91, implementation management and project quality is 152, engineering receiving inspection is 42 and operations management is 293.
Based on the above content, the problems were summed up according to impounding condition, preliminary work, engineering construction, implementation management and project quality, engineering receiving inspection and operations management, as shown in table 1.
Tab.1 The main problems found in special inspection of impounding safety Content of Problems Kind of Problems Impounding Condition Management of impounding is not standard 1 Impounding after reinforcement without acceptance 2 Impounding exceeding after reinforcement 3 Preliminary Work Procedure of the dam safety identification is not standard 4 Aptitude of the design organization for reinforcement is unqualified 5 Design of reinforcement does not agree with the conclusions of the dam safety identification 6 Lack of design of reinforcement 7 Design change does not implementing the procedure 8 Engineering Construction Constructions of crossing through dam are handled unqualified 9 Monitoring system have not been designed or implemented 10 Main constructions(dam, spillway, etc) were not completed according to design requirements 11 Metal structures were not completed according to design requirements 12 Implementation Management and Project Quality Construction and management and is not
standard 13 Modes of passing the flood season in construction period were not formulated or examined and approved 14 Quality and security risk exists in dams 15 Quality and security risk exists in spillways 16 Quality and security risk exists in constructions of crossing through dam 17 Quality and security risk exists in metal structures 18 Engineering Receiving Inspection Acceptance of project is not standardized 19 Problems exists in the inspection which could affect safety of the dam 20 Operations Management safety responsibility system of dam was not practicable 21 Lack of dispatching rules and scheduling 22 Without contingency plans of dam safety management 23 Maintenance system was not been built 24 Inspection and monitor were not enough 25 Lack of technicists for reservoir management 26 System reform of water resources management was not enough 27 Other management issues 28 The analysis of common problems exist in reservoirs Based on the main 28 category problems in statistics,
Online since: November 2013
Authors: Hui Qin Zhang, Yun Wu, Yong Qiang He
Formation Factor Analysis and Stability Evaluation for Suoertou Landslide
Wu Yun1, a, He Yongqiang1,a , Zhang Huiqin2,a
1 School of Civil Engineering, Northwest University for Nationalities, Lanzhou 730030, P.R.
Introduction Land slope is one of the highest frequency and most damaging geological hazard, once the land slope lost its stability, it can cause huge life and property losses of people, and the safety of all kinds of engineering.
Fig.1 Suoerou engineering geological map Analysis of Formation Factor for Suoertou Landslide There are many formation factors for Suoertou landslide, including natural and human factors, the major are type and properties of landslide, soil structure, geological Structure, effects of wind and water, seismic and human engineering activities. ① topography and geomorphology: Topography and geomorphology is one of decisive factor that affect landslide development, suitable slope and a certain height difference are the basically terrain condition for landslide becoming.
Upper gravel soil is mainly to the rubble and gravel, its structure is aerial construction, the state is loose, ground cover is sparse, it is good for surface water infiltration and circulation; lower layer carbonaceous slate clastic is very crushing affected by fault structure and slide perturbation, and the layer is easy soften and sludging when meet water, it has a poor engineering properties and belong to the facility-sliding strata;. ③ The condition and action of surface water and groundwater: The leading edge of Suoertou landslide is facing Bailong River, it is directly scouring and erosion of the Bailong river, the width of the river is 18-30m in this place, and it has a strong capacity of erosion and side corrosion.
The Stability Analysis of Soil Slope (China Water Conservancy and Hydropower Press, Beijing, 2003) [2] Chi Shulan, Kong Shuxiang: embankment engineering.( Chinese Railway Press, Beijin 2002) [3] Code for investigation of landslide prevention engineering,(DZ/T0218-2006) [4]Technical specification for design and construction of the landslide control project (DZ/T0219-2006)
Introduction Land slope is one of the highest frequency and most damaging geological hazard, once the land slope lost its stability, it can cause huge life and property losses of people, and the safety of all kinds of engineering.
Fig.1 Suoerou engineering geological map Analysis of Formation Factor for Suoertou Landslide There are many formation factors for Suoertou landslide, including natural and human factors, the major are type and properties of landslide, soil structure, geological Structure, effects of wind and water, seismic and human engineering activities. ① topography and geomorphology: Topography and geomorphology is one of decisive factor that affect landslide development, suitable slope and a certain height difference are the basically terrain condition for landslide becoming.
Upper gravel soil is mainly to the rubble and gravel, its structure is aerial construction, the state is loose, ground cover is sparse, it is good for surface water infiltration and circulation; lower layer carbonaceous slate clastic is very crushing affected by fault structure and slide perturbation, and the layer is easy soften and sludging when meet water, it has a poor engineering properties and belong to the facility-sliding strata;. ③ The condition and action of surface water and groundwater: The leading edge of Suoertou landslide is facing Bailong River, it is directly scouring and erosion of the Bailong river, the width of the river is 18-30m in this place, and it has a strong capacity of erosion and side corrosion.
The Stability Analysis of Soil Slope (China Water Conservancy and Hydropower Press, Beijing, 2003) [2] Chi Shulan, Kong Shuxiang: embankment engineering.( Chinese Railway Press, Beijin 2002) [3] Code for investigation of landslide prevention engineering,(DZ/T0218-2006) [4]Technical specification for design and construction of the landslide control project (DZ/T0219-2006)
Online since: February 2011
Authors: Li Jie Hang, Wei Min Shi, Yu Guang Zhong
Research on Resource Optimization of Block Erection Procedure Based on PSO
Yu-guang Zhonga,Li-jie Hangb,Wei-min Shic
College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
azhongyuguang@126.com, bhanglijie@hrbeu.edu.cn, cshiweimin@hrbeu.edu.cn
Keywords: Shipyard Scheduling; Resource Optimization; Particle Swarm Optimization; Erection Balance
Abstract.
System Engineering, Vol.25, No.9, PP98-102 (In Chinese) [3] Rainer Kolish.
CHINA CIVIL ENGINEERING JOURNAL. 2007, V0l.40, No.2,PP93-96 (In Chinese) [5] TAN Ying,GAO Hui-min, ZENG Jian-cha.
Systems Engineering Theory & Practice, 2004, No.5,pp126-129(In Chinese) [6] Guo Yun-tao,Bai Si-jun, Xu Ji-chao, Zhang Jing-wen.
Resource Leveling Optimization of Network Schedule Based on Particle Swarm Optimization with Constriction Factor. 2008 International Conference on Advanced Computer Theory and Engineering, PP652-656
System Engineering, Vol.25, No.9, PP98-102 (In Chinese) [3] Rainer Kolish.
CHINA CIVIL ENGINEERING JOURNAL. 2007, V0l.40, No.2,PP93-96 (In Chinese) [5] TAN Ying,GAO Hui-min, ZENG Jian-cha.
Systems Engineering Theory & Practice, 2004, No.5,pp126-129(In Chinese) [6] Guo Yun-tao,Bai Si-jun, Xu Ji-chao, Zhang Jing-wen.
Resource Leveling Optimization of Network Schedule Based on Particle Swarm Optimization with Constriction Factor. 2008 International Conference on Advanced Computer Theory and Engineering, PP652-656
Online since: December 2011
Authors: Xin Gang Wang, Bao Yan Wang, Xiu Feng Tan
So establishing dynamic model is closer to practical engineering.
Civil Engneering Systems. 1986, 3(4): 203-209 [3] Bjerager P, Krenk S.
Journal of Engineering Mechanics, ASCE, 1989, 115(7): 1577-1582 [4] Vetter W J.
Part C, Journal of Mechanical Engineering Science. 2009, 223(2):483-490
Journal of Mechanical Engineering.2010,46(10):187-193
Civil Engneering Systems. 1986, 3(4): 203-209 [3] Bjerager P, Krenk S.
Journal of Engineering Mechanics, ASCE, 1989, 115(7): 1577-1582 [4] Vetter W J.
Part C, Journal of Mechanical Engineering Science. 2009, 223(2):483-490
Journal of Mechanical Engineering.2010,46(10):187-193
Online since: July 2014
Authors: Hong Wei Ma, Zhan Zhao, Zhen Hua Nie
Introduction
Civil engineering structures in the service period, inevitably to the interference all kinds of bad factors of the external environment, which will cause the structural defects of the material, induce the degradation of their performance.
Structural damage detection and on-line monitoring is becoming a hot spot of academic circles and engineering industry[1].
How to evaluate the carrying capacity and reliability of a damagedstructure is a major issue in recent construction engineering research.
It is simple and can also be used for other engineering structures.
Law: Mechanical Systems and Signal ProcessingVol. 25 (2011)p.2039–2060 [11]Yufei Liu, KeguiXin:Engineering Mechanics Vol. 30 (2013), p. 205-211
Structural damage detection and on-line monitoring is becoming a hot spot of academic circles and engineering industry[1].
How to evaluate the carrying capacity and reliability of a damagedstructure is a major issue in recent construction engineering research.
It is simple and can also be used for other engineering structures.
Law: Mechanical Systems and Signal ProcessingVol. 25 (2011)p.2039–2060 [11]Yufei Liu, KeguiXin:Engineering Mechanics Vol. 30 (2013), p. 205-211
Online since: May 2012
Authors: Hong Nan Li, Ting Hua Yi, Feng Wang
Research on Inelastic Response Spectra for Asymmetric Plan Systems Subjected to Bi-directional Earthquake Motions
Feng Wang1, a, Hongnan Li2,b and Tinghua Yi2,c
1 College of Architecture & Civil Engineering , Dalian Nationalities University, Dalian 116600, China;
2 Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China.
Bommer: Soil Dynamics and Earthquake Engineering.
[3] Fujiang Xu, Jiaru Qian: Engineering Mechanics.
Hernan: Earthquake Engineering and Structural Dynamics.
Garces: Earthquake Engineering Structural Dynamics.Vol.31(2002), p.515-538
Bommer: Soil Dynamics and Earthquake Engineering.
[3] Fujiang Xu, Jiaru Qian: Engineering Mechanics.
Hernan: Earthquake Engineering and Structural Dynamics.
Garces: Earthquake Engineering Structural Dynamics.Vol.31(2002), p.515-538
Online since: July 2011
Authors: Hirokazu Iemura, Akihiro Toyooka, Masaki Higuchi, Osamu Kouchiyama
The skyhook control is widely known for the vibration control method in the mechanical engineering field.
This motion has been commonly used in Japan for seismic design of civil engineering structures constructed on good soil conditions.
Earthquake Engineering and Structural Dynamics vol.9, 189-204
Journal of Engineering for Industry, ASME J.
This motion has been commonly used in Japan for seismic design of civil engineering structures constructed on good soil conditions.
Earthquake Engineering and Structural Dynamics vol.9, 189-204
Journal of Engineering for Industry, ASME J.
Online since: January 2013
Authors: Zu De Zhou, Wen Jun Xu, Fan Zhang
Heterogeneous Convergence Model of Intelligent Perception Network
using Fiber Optic Sensing
Fan Zhang1,a, Zude Zhou2,b, Wenjun Xu3,c
1, 2, 3 School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China
1, 2, 3 Key Lab. of Fiber Optic Sensing Technology and Information Processing of Ministry of
Education, Wuhan 430070, China
a fan_dx0202@163.com, b zudezhou@whut.edu.cn, c xuwenjun@whut.edu.cn
Keywords: FBG intelligent perception network; FBG sensor network of Things; heterogeneous convergence; perception network; Internet of Things
Abstract.
Fiber Bragg Grating sensor network plays an important role in the field of large-scale engineering and major equipment condition monitoring and diagnosis.
It has a unique advantage and significance in the condition monitoring application of aerospace, nuclear, petrochemical engineering, civil engineering, mine and manufacture [5,6].
Fiber Bragg Grating sensor network plays an important role in the field of large-scale engineering and major equipment condition monitoring and diagnosis.
It has a unique advantage and significance in the condition monitoring application of aerospace, nuclear, petrochemical engineering, civil engineering, mine and manufacture [5,6].
Online since: December 2010
Authors: Qian Feng Yao, Wei Huang, Cheng Hua Zhang, Guo Xin Chen, Hao Zhen Wu
Calculation Analysis on Cracking Load of
New Type Composite Wall
Wei Huanga, Cheng Hua Zhangb , Qian Feng Yaoc ,
Guo Xin Chend and Hao Zhen Wue
College of Civil Engineering, Xi’an University of Arch. and Tech., Xi’an 710055, P.R.
The results show that, comparing the calculated values based on the twin shear unified strength theory and the values based on maximum tensile stress theory, the former are more closed to the experimental values, and it can provide more accurate, economic and applicable results for practical engineering.
(2) The results show that, comparing the calculated values of formula for the cracking load based on twin shear unified strength theory and first strength theory, the former is more closed to experimental values, and provide more economic and generality results for practical engineering.
(in Chinese) [5] ZHAO, J.H. (2003), Strength theory and its engineering application, Science press.
The results show that, comparing the calculated values based on the twin shear unified strength theory and the values based on maximum tensile stress theory, the former are more closed to the experimental values, and it can provide more accurate, economic and applicable results for practical engineering.
(2) The results show that, comparing the calculated values of formula for the cracking load based on twin shear unified strength theory and first strength theory, the former is more closed to experimental values, and provide more economic and generality results for practical engineering.
(in Chinese) [5] ZHAO, J.H. (2003), Strength theory and its engineering application, Science press.
Online since: January 2011
Authors: Xin Sha Fu, Juan Zhu
Video-based Automatic Incident Detection of highway network monitoring system
Xinsha Fu1, Juan Zhu 2
1 School of Civil Engineering and Transportation, South China University of Technology, China
2 School of Computer Science & Engineering, South China University of Technology, China
1 fuxinsha@163.com, 2 zjuan.scut@163.com
Keywords: video detection; traffic flow; traffic accident; traffic monitor
Abstract.
This paper Based on computer vision technology and digital image processing technology, Combining the needs and existing monitoring facilities of current highway traffic monitoring, study Video images based on highway traffic incident detection monitoring system, complete the system development, system engineering and system integration technology, And monitoring operations in the highway has been applied.
This paper Based on computer vision technology and digital image processing technology, Combining the needs and existing monitoring facilities of current highway traffic monitoring, study Video images based on highway traffic incident detection monitoring system, complete the system development, system engineering and system integration technology, And monitoring operations in the highway has been applied.