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Field Test Research on Treatment of Over-wet Soil Hua WEN1,2, a, Song GU1, b, Youwen SU1, c, Baolong ZHU1, d 1College of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China; 2College of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China awenhua189@163.com, b29877154@qq.com, csywen11@vip.sina.com, dzhubl@yeah.net Key words: over-wet soil, fill, ash mixing method, field test Abstract: Take over-wet soil as research object, this paper presents the results of field test to verify the effect and feasibility of ash mixing method, one improvement technique for over-wet soil, on improving the performance of over-wet fill in construction site.
Therefore, treatment of it is necessary in engineering construction.
Chinese Journal of Geotechnical Engineering,2010,32(2):211-215 (in Chinese) [3] Zhang Qi.
Mechanism of over-wet soil control and engineering practice[J].
Subgrade Engineering, 2007, (5):74-75 (in Chinese) [6] Cheng Yong-ai.

Research progress of phosphorus removal in enhanced coagulation Chao-Chun Tang1, a, Peng-Hui Shao 2,b, Mei-Peng Jian 3,c , He-Gen Yu 4 1School of Civil Engineering and Architecture,East China JiaoTong University,Jiangxi atangchaochuncn@yahoo.com.cn, b358812938@qq.com, c452275405@qq.com Keywords: enhanced coagulation; phosphorus removal; flocculating agent; high-efficiency flocculation reactor.
Journal of Beijing University of Civil Engineering and Architecture Vol. 22 (2) (2006)p 24 In Chinese [11] M Boller，S Blaser.
Technology of Water Treatment China，Vol. 34(11) (2008) p 44 In Chinese [22] W C Ma，J Ma and B J Han China Water and Wastewater Engineering, Vol. 26(3) (2010) p 22 In Chinese [23] K Liu，J Ma and X H Guan g China Water and Wastewater Engineering，Vol.25(21) (2009) p 89-94 In Chinese [24] K Yang，J X Kang and Y B Zhang.
China Water and Wastewater Engineering，Vol.18(2) (2002) p 43 In Chinese [25] Y N Dai，Y X Jiang Renewable immobilized removal agent chemical phosphorus removal method CHINA Patent 1686854.2005,10:26
Technology of Water Treatment，Vol.35(9) (2009) p 117 In Chinese [29] Z G Tong，F P Hu China Water and Wastewater Engineering，Vol.26(6) (2010) p 63 In Chinese [30] F Chai.

D., Factors Affecting Schedule Delay, Cost Overrun, and Quality Level in Public Construction Projects, Journal of Management in Engineering, 32 (2016) 04015032
A., Nikakhtar, A., and Ghoddousi, P., Verification of lean construction benefits through simulation modeling: A case study of bricklaying process, KSCE Journal of Civil Engineering, 18 (2014) 1248–1260
[10] Bajjou, M.S., Chafi, A., Identifying and Managing Critical Waste Factors for Lean Construction Projects, Engineering Management Journal. 32 (2020) 2–13
M., and Gruber, S., Simulation of Concrete Paving Operations on Interstate-74, Journal of Construction Engineering and Management, 134 (2018) 2-9
W., Construction project simulation using CYCLONE, Canadian Journal of Civil Engineering, 2516-25 (1998)

Recently, damage identification techniques using the wavelet packet energy spectrum (WPES) of structural dynamic responses, has received growing attention in the field of structural health monitoring of civil engineering structures (Sun et al., 2004; Ding et al., 2008).
“Structural health monitoring of long-span suspension bridges using wavelet packet analysis”, Earthquake Engineering and Engineering Vibration, Vol. 6, No. 3, pp. 289-294
“Modeling of temperature-frequency correlation using combined principal component analysis and support vector regression technique”, Journal of Computing in Civil Engineering, Vol. 21, No.2, pp. 122-135
“Technology developments in structural health monitoring of large-scale bridges”, Engineering Structures, Vol. 27, No.12, pp. 1715-1725
“Statistical wavelet-based method for structural health monitoring”, Journal of Structural Engineering, Vol. 130, No. 7, pp. 1055-1062.

Design and Application of Long-short-pile Composite Foundation FAN Ze1,a ZHANG Yu-cheng 2,3,4,b LIU Hui-kang1,c 1School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641,China 2GuangDong Research Institute Resources and Hydropower,GuangZhou,510610,China 3The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510610,China 4The Emergency Technology Research Center of Guangdong Province for Public Events GuangZhou,510610,China afanze717@126.com, bliuhuikangscut@gmail.com,c125340752@qq.com Keywords: CM long-short-pile; composite foundation; settlement; bearing capacity Abstract.
And it verified the feasibility of this method by engineering example.
Introduction With the rapid development of engineering construction the urban land is becoming tighter and tighter.
This article, based on the existing pile foundation and composite foundation theory and engineering experience, preliminarily studied on CM long-short-pile composite foundation design, verified combined with engineering.
The second Shenzhen Symposium on Architecture Engineering, 2000 [3] Gong Xiaonan.

Monitoring Beam-Column Joint in Concrete Structures Using PiezoImpedance Sensors Bahador Sabet Divsholi1 , Yaowen Yang2, Li Bing3 Nanyang Technological University, School of Civil & Environmental Engineering, Block N1, 01C79, Nanyang Avenue, Singapore 1 sabe0002@ntu.edu.sg, 2 cywyang@ntu.edu.sg, 3 cbli@ntu.edu.sg Keywords: Structural Health Monitoring, concrete, PZT, electro-mechanical impedance, damage, beam-column joint Abstract: Despite that piezoelectric ceramic lead zirconate titanate (PZT) has been used for structural health monitoring (SHM) in various engineering systems, limited work has been conducted on real size concrete structures.
The vulnerability of RC beam-column joints has been identified from structural damage investigations over the past decades, especially in the area of earthquake engineering.
Load-displacement RMSD-displacement (7 times scaled) Fig. 3: Signatures collected during the test Fig. 4: Load-displacement and RMSD results The theoretical model for PZT driven dynamic structural system was proposed by Liang [5] and subsequently developed and applied to the health monitoring of the engineering systems by other researchers [6-12].

Field Measurements of Dynamic Characteristics and Wind-Induced Response of a Large-Span Roof Structure Jiyang Fu1, a, An Xu1, b and Jiurong Wu1, c 1School of Civil Engineering, Guangzhou University, Guangzhou 510632, China afjy@jnu.edu.cn, bxuan@jnu.edu.cn, cwjr@jnu.edu.cn Keywords: Large-Span Roof; Wind Effect; Field Measurement; Wind Tunnel Test; Typhoon Abstract.
Structural dynamic characteristics Many stochastic system identification methods have been developed during the past decades, among which the stochastic subspace identification (SSI) has proven to be a method that is very appropriate for civil engineering [11].
Kwok: Journal of Wind Engineering and Industrial Aerodynamics.
Wu: Engineering Structures.
Wong: Engineering Structures.

Research on Mechanical Property and Economic Effect of Contractible Concrete Filled Steel Tube Support Hui Li1, Bei Jiang2, a, Bin Yang3, Qi Wang4, 5, b, Hongtao Wang5, Zhi Li5 and Weiteng Li5 1Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology , Qingdao 266510, China 2College of Resources & Environmental Engineering, Shandong University of Science and Technology, Qingdao, China, 266510 3Municipal Engineering and Public Utility Bureau, Economic and Technical Development Zone, Qingdao, China, 266555 4College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, China, 266510 5The Research Center of Geotechnical& Structural Engineering, Shandong University, Jinan, Shandong, China, 250061 askdjb@126.com, bskdwq@163.com Keywords: concrete filled steel tube; support; contractible joint
Introduction With rapid development of social economy, underground rock engineering, such as coal mine tunnels, highway and railway tunnels with large embedded depths or big section areas have been constructed widely, and accordingly the supporting of deep soft rock or fractured rock mass is becoming more and more difficult.
Meanwhile, many engineering practices show that instability will produce, although the load-carrying properties of U shape yieldable steel supports have not been given full play to, which may cause serious damage.
Concrete filled steel tube structure is a sort of concrete filled steel tube which has excellent performances, and has been widely applied in ground engineering such as high buildings and arch bridges, but it is barely used as arch support in underground engineering.
[6] Yanfa Gao, Bo Wang and Jun Wang: Chinese Journal of Rock Mechanics and Engineering, Vol. 29 S1 (2010), p. 2604 [7] Linhai Han: Concrete Filled Steel Tube Construction-theory and Practice (Science Press, Beijing 2004).

The Effects of Applied Axial Stress on Lateral Bearing-load Capacity for Fully Grouted Reinforced Concrete Masonry Shear Walls Yan Zhao 1,2,a, Fenglai Wang 1,b, Fei Zhu 1,c 1School of Civil Engineering, Harbin Institute of Technology, Harbin 150090,China 2College of Architecture and Civil Engineering, Jiamusi University, Jiamusi 154007,China azhaoyan_hit@163.com, bwflai@sina.com, czhufei420@126.com Key words: fully grouted reinforced concrete masonry shear walls; low cyclic loading; shear resistance; the axial stress Abstract: Ten full-scale fully grouted reinforced concrete masonry shear walls were tested under force-displacement controlled reversed cyclic lateral loads simulating seismic effects.
S.: Journal of Structure Engineering., 1990,116(3), 619–640
M.: Journal of Structure Engineering., 2006,132(3), 400–408
M.: Journal of Structure Engineering., 2007,133(5), 706–713
El-Dakhakhni. et al.: Journal of Structural Engineering, 2010,24(1):4-18

As the aviation industry developed, especially the civil aviation industry developed, weight and size of the aircraft used wires have become increasingly demanding: In addition to the good performance in electrical and physical characteristics, a light weight, long life and small size are required.
As the aircraft, especially large civil aircraft size is increasing, saving weight becomes one of the most important targets for civil aircrafts.
Take a hundred-seat civil aircraft as an example, weight of general used wires is at least 1.5t.
Engineering Plastics Application, 2004, 32 (9): 43-46