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To improve the accuracy of describing the nonlinear behavior of long concrete-filled tubes (CFT) and make the nonlinear reliability analysis method more valuable for engineering application, based on the response surface and nonlinear finite element method, the reliability analysis model for the nonlinear carrying capacity of concrete-filled steel tube structure is made, with the help of consistent mode imperfection method to consider the initial geometric defects of the structure.
Engineering Mechanics, 2006,23(11):139:144(in Chinese) [5] Bucher GC, Bouraundu.
China Civil Engineering Journal, 2008,41(8):15-21(in Chinese) [10] GB 50205-2001, Code for acceptance of construction quality of steel structures [S]. 2001.
Advances in Engineering Software, 2005,36(10):681-690 [12] Manuel Ritto-Corrêa, Dinar Camotim.

Bearing Behavior of Steel Foot Pipe in Tunnel on Soft Base Yimin Wua School of Civil Engineering and Architecture, Central South University, Changsha, China a Wuyimin531@163.com Keywords: Tunnel; Soft Base; Steel Foot Pipe; Bearing Behavior.
In most soft rock, the reasonable length varies from 3m to 4m, instead of 6m that we often used in the practical engineering
The reasonable dip angle is limited to 5 degrees, instead of 15 to 30 degrees used in some engineering.
“Soft rock engineering geomechanics”.
Railway Engineering, Vol. (1), 43-47. (2007, in Chinese) [6] Wang X.

The results show that the approach works well in achieving good calibration results, which match field observation in a reasonable level and meet engineering requirements.
Calibration has been the favorite research topic of water distribution system analysts in the past three decades, resulting in numerous publications in the scientific and engineering literature on the topic[1].
Journal of Environmental Engineering, Vol.114 (1988), p.120-136
Civil Engineering Systems, Vol.8 (1991), p.153–160
Journal of Hydraulic Engineering, Vol.133 (2007), p.927–936.

Modeling a thermo-stressed state of the cast-in-situ low carbon footprint alkali activated slag cement concrete hardened under hot environment Luqian Weng1a, Hailin Cао1b, Krivenko P.V.2c, Yue Guo1d, Petropavlovsky O.N.2e, Pushkar V.I.2f, Kovalchuk A.Yu.2g 1Advanced Materials Research Institute, Shenzhen Academy of Aerospace Technology, Shenzhen, P.R.China 2V.D.Glukhovsky Scientific Research Institute for Binders and Materials, Kiev National University of Civil Engineering and Architecture, Kiev, Ukraine a leeweng@126.com, bcaohl@hit.edu.cn, c,e,f,g pavlo.kryvenko@gmail.com, dguoyuehit@126.com Keywords: alkaline activated slag cement concrete, modeling, thermo-stress state, massive structure Abstract.
The paper covers the results of modeling a thermo-stressed state of the cast-in-situ massive alkali activated slag cement concrete structure hardened under hot environment to meet the requirements for marine engineering application.
“Prediction of parameters of crack formation in the concretes for cast-in-place structures/ Collection of works”, Building materials, products and sanitary engineering 2012 (46) 35-41.

Study on Properties of Cement Lime-Fly-Ash Soil Shun-Guo Bai 1,2, a , Yong-Feng Hou 1,b 1 College of Civil Engineering, Beijing JiaoTong University, Beijing, 100044, China 2 College of Urban and Rural Construction, Agricultural University of Hebei, Baoding, 071001, China a baishunguo@eyou.com, b yfhoulw@263.net Keywords: Cement lime-fly-ash soil; strength; permeability; cement-soil Abstract.
These conclusions are valuable to engineering design and construction.
[4] Bell F.G.: Stabilization and treatment of clay soils with lime [J], Ground Engineering, 1988, 21(1), pp. 12-15
[5] Stavridakis E I, Hatzigogos T N: Influence of liquid limit and slaking on cement stabilized clayey admixtures [J], Geotechnical and Geological Engineering, 1999, 17(1) pp. 145-154
Geotechnical Engineering in soft Ground[C](Shanghai: Tongji Unversity Press, 2001), pp. 656-661

Experimental Study on Seismic Behavior of Recycled Concrete Grill Walls with Axial Compression Ratio Jinghai Zhou1,a, Chaobi Zhang2,b, Xianhong Meng 3,c 1Energy Research Institute, Shenyang Jian Zhu University, Shenyang China, 110168 2School of Civil Engineering, Shenyang Jian Zhu University, Shenyang China,110168 a zhoujinghai@sjzu.edu.cn, b zhangchaobi@yahoo.cn, c cexhmeng@sjzu.edu.cn Keywords：Recycled concrete, Ductility, Low cyclic loading, Energy dissipation, Seismic behavior.
The Harbin Engineering University recognized the wall formally to be similar to the whole small aperture shearing force wall, analyzed through the experiment and the finite element software to this kind of wall, may receive the supporting capacity formula computation according to the present standard[1]; The Tsinghua University indicated that this wall may satisfy 7-stored building of shearing bearing capacity and the story drift request under the small earthquake[1]; China Building Science Research Institute thought this kind of wall may constitute below 6-stored building[1]; The Taiyuan University of Technology has contrasted this kind of wall and the ordinary wall earthquake resistance performance, thought that this system has the enough intensity and rigidity, the supporting capacity may satisfy small earthquake request[2,3]; The Shenyang jianzhu University analyzed the earthquake resistance performance under the different axial compressed ratio and different shear span ratio, proposed
Experimental Study on Complex Shear Wall with Heat Preservation Formwork Journal of TaiYuan University of Technology, Vol. 2 (2008)，p.167-170 [3] Wei Zhang, Analyse and Study on Energy Efficiency and Anit-seismic Performance of Complex Shear Walls, TaiYuan University of Technology, 2007, [4] Jingwen Zhu, Experimental Study on Seismic Behavior of Concrete Grillage Walls, Shenyang Jianzhu University, 2011, [5] Wanlin Cao, Taiguang Xu, Qiang Liu, Jianwei Zhang, Yaqi Zhang, Experimental study on seismic performance of high-rise recycled aggregate concrete shear wall World Earthquake Engineering Vol. 25(2009), p.18-23 [6] Yaqi Zhang, Wanlin Cao, Jianwei Zhang, Haipeng Yin, experimental study on seismic performance of coupled shear walls with upper part using recycled concrete Journal of Earthquake Engineering and Engineering Vibration Vol. 30(2010), p.98-103 [7] Chengcheng Sun, Yuan Dong, Jianxue Song, Study on Effect of Compressive Strength of Recycled Aggregate Concrete with Secondary

An Improved Elasto-plastic Model for Unsaturated Soils Jianjun Dong College of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, China dongjianjun@gmail.com Keywords: shear yield surface; drop-shaped; hardening theory; dual stress; unsaturated soil; elasto-plastic Abstract.
In these constitutive models of unsaturated soil, BBM can get better applications in engineering practice.
Special problem soils[C]// Proceedings of the 9th European Conference on Soil Mechanics and Foundation Engineering.
Experimental study on creep behavior of rockfills[C]// Proc the 6th Soil Mechanics and Foundation Engineering Conference.
Chinese Journal of Geotechnical Engineering, 1980, 2(1): 1–11.

A Soft-roadbed Settlement Prediction Model Based on RBFNN Xianghua Peng1, a, Zhichao Wang 2, b and Min Yu 3, c 1 Swan College of Central South University of Forestry and Technology, Changsha, Hunan, 410004 2 College of civil engineering and mechanics, Xiangtan University, Xiangtan, Hunan 411105 3 Institute of Rheological Mechanics and Material Engineering, Central South University of Forestry and Technology, Changsha, Hunan, 410004 apxh10000@163.com, b51925401@qq.com, cyumin1999@126.com (corresponding author) Keywords: Soft-roadbed; subgrade settlement; prediction model; RBF Neural Network.
In order to ensure the construction quality and correct construction, many engineering works need for subgrade settlement observation, convenient for makeing accurate predictions of embankment filling subgrade settlement after the completion.
Appliing the method to the soft subgrade settlement calculation, can accurately predict the settlement of the roadbed, and provide a favorable protection for soft subgrade engineering quality and construction RBFNN and Its Working Principle RBFNN consists of two parts (supposing the input dimension is n, associative unit number is H and the output dimension is m), and its working flow chart is shown in Fig.2.
Highway Engineering And Transportation, 158(10) (2006) 167-170

A Power Spectral Analysis Method for Wind-Induced Response of Flexible Structures Jing Li1, a, Xin Wang1, b 1Faculty of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China aleyking@163.com, bxinwang@gdut.edu.cn Keywords: wind-induced response; wavelet packet transform; power spectrum Abstract.
There are various kinds of methods for power spectral computation of stochastic signals, among which the methods based on fast Fourier transform (FFT) are well established and widely utilized in engineering.
Fortunately, a new type of time-frequency analysis tool—the wavelet analysis methods have been created and developed, which can be applied to structural wind engineering [4-6].
Engineering Example The roof structure of the Foshan Century Lotus Stadium as shown in Fig. 1 is a typical tensile cable-membrane structure.
Further, an engineering example is adopted to illustrate the proposed approach.

Study on Optimal Ratio of Compound Corrosion Inhibitors for Reinforcing Steel Yi Jiang1, a, Chaoyi Zheng1,b and Junzhe Liu 1,c 1 The Architecture Engineering and Environment Faculty, Ningbo University, Ningbo 315211, China.
Introduction Reinforced concrete is one of the largest engineering material dosage of today's society(China's consumption accounted for about half of the world), and the main reason for failure of concrete is reinforced by the corrosion.
Hot issues of common concern to our country and even the world the field of civil engineering structures is the corrosion damage .The harm of it mainly has the following three aspects: one is to reduce the bearing capacity of structure, reduce the safety reserve; the second is to reduce the stiffness of the structure, increasing the deformation, and even make the spalling of concrete cover, affect the normal use; the third is to reduce the ductility of the structure, even change the failure pattern, which leads to structural failure consequence is more serious [1].
According to the Japanese Concrete Engineering Institute standard  JCI-SC1" concrete structures of steel corrosion, corrosion test method and specification" requirements: Weightlessness rate(%)=[(Reinforced the original quality)-(Quality derusting)] / (Reinforced the original quality) a.
Corrosion for Science and Engineering(2ndEdition) [M] .England:Edinburgh Gat e Harlow, Essex CM20 2JE, 1995.