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Local Buckling Analysis for Large Diameter Underground Jacked Steel Tubes under External Load Jin Chunfu1, 2, a, Yan Shi2, b , Niu Peng3, c 1 School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian, China, 116024 2 School of Civil Engineering, Shenyang Jianzhu University, Shenyang, China, 110168 3 Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian, China, 116026 a Jinchunfu@163.com, bsyan1962@126.com, cnp777@126.com Key words: Densely arranged underground steel tubes, nonlinear finite element method, local buckling, perturbation mode, critical pressure Abstract.
FEA Model A DAUSTS model comes from a practical engineering of a metro station with a layout pattern of steel pipes (shown in Fig. 1).
The results of practical engineering experience and full-scale model experiments both show that the vertical deformation is not equal to the horizontal one.
China Machine Press (2003) [4] Specification for Structural Design of Buried Steel Pipeline of Water Supply and Sewerage Engineering.
Wang: ANSYS on Engineering Structures.

Design and Analysis of Blast Resistant RC Beams for Concrete Structures at Off-Site Oil & Gas Plants Salah Al-Jasmi1, a *, Nur Farhayu Ariffin2, b, Mazlan Abu Seman3, c 1Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, Malaysia 2College of Engineering, Department of Civil Engineering, Universiti Malaysia Pahang, Malaysia 3College of Engineering, Department of Civil Engineering, Universiti Malaysia Pahang, Malaysia a*Pah19001@stdmail.ump.edu.my, bfarhayu@ump.edu.my, cmazlanseman@ump.edu.my Keywords: Blast loads, finite element analysis, RC beam, gas explosion, hydrocarbon blast, CFRP strengthening, off-site facilities, concrete structures Abstract.
Acknowledgment The authors would like to acknowledge Universiti Malaysia Pahang for providing financial support under University Research Grant PDU213206, and Faculty of Civil Engineering Technology for facilities.
Ali, Performance Based Design of Offshore Structures Subjected to Blast Loading, Ph.D. dissertation, Department of Civil and Environmental Engineering, Imperial College London, 2007
Journal of The Journal of Civil Engineering, 66(7), 1-300, 2018
Procedia engineering 177 (2017): 582-589

Osuji2,b 1,2Department of Civil Engineering, University of Benin, Benin City, Nigeria aeoeze@yahoo.com, bosujisyl@yahoo.com [Date received: 24 December 2011.
Civil Engineering 60(5), (1994) 52-54
Report to the National Science Foundation by the Department of Civil Engineering, University of Illinois. 1994
Department of Civil Engineering, University of Benin, Benin City.
Rock Mech. and Rock Engineering.

The analysis on influential factors of building project Li-bin Fu 1,a , Yongwei Wang 2,b 12College of Civil Engineering, Huanghe S&T University, Zhengzhou Henna ,China a flbin2007@163.com, b65839177@qq.com Key words: engineering quality; influential factor; appraisal model; key factor Abstract: Through the statistics and analysis of concerned document about housing project quality in recent years, this thesis marks of sorts of housing problems and generant degree of different sort.
There are many factors influencing residential engineering quality, such as the engineering investigation, planning, design, construction and maintenance, as well as the residential product development, production, supply and other aspects.
Through the survey analysis after that, at present our country residential engineering quality of concrete problems mainly have 24 kinds, these problems from different perspectives reflect the engineering in the presence of different aspects of the problem [1-3].
Guang, G.Z.Sun , Factors of residential engineering quality issues in group [J] Construction Economics , 2008, 5, 82~84 [5] X.L.Hou,H.L.Zhu,G.
Guang, Chinese residential construction quality evidence-based management approach and its empirical research (1) - the quality of the group factors [J] Civil Engineering Journal , 2008, 41(7)：92-97

The Optimization of ACN-PCN Evaluation Method for Airport Pavement under Operation Xianzhi Shao1, a, Yanqing An1, b, Xin Su1, c, Jie Yuan2, d 1China Airport Construction Group Corporation, Beijing, China; 2Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, China ashaoxianzhi@163.com, ban_cacc@163.com, cimsure@sina.vip.com, d705101044@qq.com Keywords: Operating airport, Aircraft Classification Number, Pavement Classification Number, Evaluation method Abstract: The Aircraft Classification Number-Pavement Classification Number method is the main approach for evaluating the structure of the airport pavement.
The improved method could provide the technical support for accurately judging the bearing capacity of the exiting pavement structure and supply the decision-making reference to the Airports Authority. 1 Introduction The ACN-PCN methodology is the main technical basis to measure the pavement bearing capacity in our civil aviation, the result is that PCN has become the most important structure parameter in airfield pavement.
It provides the requirements for ACN by Technical Standards for Airfield Area of Civil Airports (MH5001-2006) [1]
The principle of this calculation method which is on the basis of Technical Standards for Airfield Area of Civil Airports is different aircraft corresponding with different ACN value.
References [1] Technical Standards for Airfield Area of Civil Airports(MH 5001-2006), Civil Aviation Administration of China, Beijing, 2006.03

Analysis of Portland Cement Hydration Mechanism and its Material Applications in Engineering Hongliang Huanga, Huifang Zhangb, Fei Zhaoc, Xuefei Lid and Yanfang Lie Hebei Institute of Architecture Civil Engineering, Zhangjiakou 075000, China ahuanghong.5055@163.com, bzhfsyf_79@sohu.com, czhaofei8417@126.com, dconcreteman2008@sina.com, eshxianlmf@126.com Keywords: Portland cement, Hydration mechanism, Materials in engineering, Applications Abstract.
On the basis to clarify the Portland cement hydration mechanism, we have a brief analysis of research methods about Portland cement hydration mechanism, mainly including the hydration heat, ultrasonic method, resistivity method, mercury intrusion method, chemical combine method, CH quantitative measurement, X-ray diffraction method, scanning electron microscopy, providing a theoretical basis of Portland cement hydration mechanism and its material applications in engineering for further study and improvement.
Material Applications in Engineering The research on hydration mechanism of cement has a decisive guiding significance on the adjustment of production formula, optimization of technological conditions, the improve of the equipment, and the improve of the use properties.

Research on Stress-free Rail Temperature Design of Wubei-Xiaohuangshan Railway Dongfeng Gao1,a ,Weilong Sun2,b 1Institute of civil engineering, LanZhou JiaoTong University,Lanzhou,Lanzhou, Gansu,730070,China 2Institute of civil engineering, LanZhou JiaoTong University,Lanzhou,Lanzhou, Gansu,730070,China agaodongfeng123@126.com,bswlyouyou@gmail.com Keyword: Large temperature difference region, CWR, Stress-free temperature of rail Abstract.
Look forward to give some reference to the similar engineering problems.

Journal of Transportation Engineering, 2012, 138(1): 67-74
Journal of Materials in Civil Engineering. 2012, 24(11): 1359-1367
Journal of Materials in Civil Engineering, 2011, 23(3): 335-341
Civil Engineering Dimension, 2004, 6(1): 26-31
Journal of Traffic and Transportation Engineering. 2007, 7(5): 33-36

Studying on Chinese Engineering Design Service Modes GuoHua Lu 1,2, a BeiBeiZhang3, c HuCheng1, a 1, Construction and real state management department, Civil Engineering College, Southeast University, Nanjing, 210096 2management engineering department, Shandong Jianzhu University, Jinan, 250101 3management department, Anhui Jianzhu University, Hefei, 230601 alghua007@163.com,bzhangbb510@sina.com, c101001849@seu.edu.cn Keywords: engineering design, service mode, information, knowledge.
In recent years, with the in-depth understanding of engineering design, the study on the operation and management of the engineering design enterprises has been attracted a lot attention.
Grasberg, 2008) the essence of the engineering design, that is the engineering design been derived from the market demands, rather than the technology.
Research on management and innovation of engineering consulting in China [D].
Engineering.

Expansive Rock Deep Cutting Slope Treated by Flexible Supporting Technology for Beijing Western Sixth Ring Highway Jie Xiao1,2,a, Heping Yang2,b, Xiao Ni2,c and Xianyuan Tang3,d 1Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety Ministry of Education, Changsha University of Science and Technology, Changsha, Hunan 410004, China 2School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan 410004, China 3Department of Civil Engineering Guangxi University of Technology, Liuzhou, Guangxi 545006, China axiaojie324@sina.com, bcscuyang@163.com, c675747238@qq.com, dthy1188@126.com Keyword: expansive rock, flexible supporting, cutting slope, geogrid Abstract: The landslides of expansive rock cutting slope was the most serious and difficultly treating engineering problem for highway construction.
Therefore, how to treat the expansive rock deep cutting slope was an engineering problem.
The expansive rock engineering problem was firstly encountered for Beijing highway construction.
Bao: Chinese Journal of Geotechnical Engineering Vol. 26 (2004), in Chinese
Yang, etc: Civil Engineering (ASCE) Vol. 77 (2007)