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Some problems in the engineering application of Variable Frequency Technique Guangjun Liu a, Hongmei Zhub Department of Civil Engineering, North China Institute of Science and Technology, Beijing, 101601, China a liu103@eyou.com, b shqzhu@163.com Keywords: Variable frequency technology, COP, Pump efficiency Abstract.
It is hoped to provide more basis and reference for the engineering practice in the future.

Study on Safety Risk Evaluation of High-way Under-passing Railroad XU Ke1, a, LI Huimin1 and Lu Shasha 2 1School of Civil Engineering, Xi’an University of Architecture &Technology, Xi’an, 710055, China 2 China South City Holdings Co.
So it is very important to evaluate the security risk correctly in engineering.
In order to improve the safety level of engineering, this paper cited the support vector machine to study the safety risk assessment of engineering.
Because the reference of the engineering data and information come from the second phase of Shang Qiu highway engineering, the research result has a certain reference value.
Chinese Journal of underground space and Engineering. 2011,7(5): 989-995

Research of Mechanical Influence of Initial Imperfections on Beam String Structure Yongsheng QI1, 2, a, Shenghua Liu3,b 1College of Civil Engineering and Traffic, Hohai University, Nanjing 210098, China 2Department of Civil Architecture, Changzhou Institute of Technology, Changzhou 213002, China 3Shanghai Nuclear Engineering Research & Design Institute, Shanghai 200233, China aqiyongsheng621@163.com, b liush@snerdi.com.cn Keywords: Initial imperfections, Geometric imperfections, Residual stress, Beam string structure Abstract.
Fig. 5 Plastic zone of mid-span cross-section of upper chord Analyses of influences in stage of use The roof of engineering uses double-layer metal plate, constant load is 0.4 kN/m2, live load is 0.5 kN/m2, and the displacement data are listed in table 4.

A New Method of Mix Proportion Design of Ordinary Concrete - Data Analysis Method Wangliang Zhou College of Water Resources and Hydroelectric Engineering, Wuhan University, Wuhan, China College of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, China zhouwanliang1970@163.com Keywords: mix proportion design of ordinary concrete; data analysis method; the volume ratio of sand to binder; the volume ratio of water to binder; the mass ratio of sand to sand and gravel Abstract: In the paper, through analyzing large quantity of concrete mix proportions, a law existing in all concrete with different mix proportions and good workability is found, i.e., the volume ratios of sands to binder linearly increase with the increase of the volume ratios of water to binder.
[5] Joo-Ha Lee, Young-Soo Yoon and M.ASCE: Journal of computing in civil engineering.

Time-history Analysis of Lowpylon Cable-stayed Bridge with moving loads Xiaoqin wang1,a , Wencheng jin1,a 1 Huazhong University of Science and Technology School of civil Engneering and Mechnics, wuhan of Hubei in china aemail:79258706@qq.com Keywords: Cable-stayed Bridge Nonlinear Supperposition Method Moving Load Time-History Analysis Abstract: Established space dynamic analysis model of nonlinear structure in accordance with the unique mechanical characteristics of Lowpylon Cable-stayed Bridge.
Engineering Mechanics,,2008, 25 (3):230-240
Civil engineering journal , 1994. 27(1):1-10
Proc. 4th East Asia-Pacific Conference on Structural Engineering&Construction [C].

The Optimization and Application of Riprap Concrete Technology Zhiguo Yin 1,a, Huimin Li 2, b 1 School of Civil Engineering, Xi’an University of Architecture and Technology, Shaanxi Xi’an,China 2 School of Civil Engineering, Xi’an University of Architecture and Technology, Shaanxi Xi’an,China 43282218@qq.com a, li_huimin2005@126.com b Keywords: mass concrete; riprap concrete; raft foundation Abstract.
Conclusion Dinghan gardens residential building construction of raft foundation is the engineering of mass concrete in summer.

Finite Element Analysis of Mechanical Property for Solid Multibarrel Tube-confined Concrete Columns (CHS inner and SHS outer) under Monotonic Loading ZHANG zhao-qiang1, 2,a, YAO yong1,b 1School of Civil Engineering and Architecture Southwest University of Science and Technology, Mianyang 621010, China 2School of Civil Engineering, Chang'an University, Xi'an 710061,China a52282843@qq.com, byy001221@163.com Keywords: Multibarrel tube-confined concrete; Monotonic loading; Finite element Abstract.
Concrete-Filled Tubular Steel Columns under Eccentric Loading[J].The Structural Engineering,1969,47(5): 56-64

Overtopping risk analysis using MC-LHS method Wang Wei 1, 2,a, Li Chuanqi 2,b and Wang Shuai 2,c 1 School of Civil Engineering, Tianjin University, Tianjin 300072，China 2 School of Civil Engineering, Shandong University, Jinan 250061 awangweilcq@sdu.edu.cn, blichuanqi@sdu.edu.cn, cwangshuaisdu@126.com Keywords: dam overtopping, Latin hypercube sampling, Monte Carlo simulation, risk analysis.
Journal of Hydroelectric Engineering. 2008, 27(2):44-49 (in Chinese) [4] A.

The space design of radio and television building in the digital and network era Zhang Guangping1 a Yu qi2b 1Jilin Institute of Architecture and Civil Engineering, Changchun ,China 2Jilin Institute of Architecture and Civil Engineering, Changchun ,China aemail: arczgp@163.com  bemail:187027497@qq.com Keywords: Radio and television building Space Design Digital network Abstract: Broadcasting buildings as the embodiment of high-tech, cutting-edge culture and building on behalf of the type of process rigorous, complex architectural features, the rapid development of high public concern.
In economic development and technological progress, driven by the dual nature of radio and television building space evolving and unique architectural design is only based on age, continue to explore and study in order to produce both functional and forward-looking architectural space Author: Zhang Guangping (1972 -), female, Changchun, Jilin Province, Senior Engineer, Master In odd (1983 -), female, Changchun, Jilin Province, lecturer, Master References: [1] Han Dongqing.

Identification of MR damper based on normalized Bouc-Wen model using neural network Arash Bahar1, a, Ali Chaibakhsh2, b, Sajad Haqdadi3, c 1 Department of Civil Engineering, University of Guilan, Rasht, Iran 2 Department of Mechanical Engineering, University of Guilan, Rasht, Iran 3 Department of Civil Engineering, Science & Research Branch, Islamic Azad University, Kermanshah, Iran.