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Preparation and Characterization of Hollow Silica Nanospheres Lili Feng1,2,a, Wei Zhao 2,b, Jingjing Tong 1, Guanhua Yue 1 1Key Laboratory of Urban Stormwater System and Water Environment (Beijing University of Civil Engineering and Architecture) , Ministry of Education, Beijing 100044, P.
China 2Beijing National Laboratory of Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.
They have potential applications in the fields of medicine, biochemistry, materials science and chemical engineering [1-3].
Acknowledgements The authors acknowledge the Ministry of Science and Technology of China (No. 2009ZX07314-009-04) and Scientific Research Foundation of Beijing University of Civil Engineering and Architecture (No. 101101102).

Integral space concrete roof construction method research Kechao Zhao 1,2,a, Jincheng Zhao 1,b and Jixiang Xu1 1School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao tong University, Shanghai, 200240, China 2Department of Civil Engineering, Henan institute of Engineering, Zhengzhou, 451191, China azkc2002@126.com, bjczhao@sjt.edu.cn Keywords: The Integral space roof，Construction methods，In situ molding Abstract.
Conclusion In this engineering, because the roof’s construction use in situ cast-in-situ at altitude, compare with to the method that manufacture on the ground, and then lift up, it has the following advantages: 1.

Experimental analysis on mode localization of damaged reticulated shell structures Zhuo Wang1, 2, a, Weiming Yan3 and Lieping Ye1 1Department of Civil Engineering, Tsinghua University, Beijing, 100084, China 2College of Engineering, The Open University of China, Beijing, 100031, China 3Beijing Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, 100124, China awangzhuo@crtvu.edu.cn Keywords: Reticulated Shell Structure, Mode Localization, Damage, Experiment.
But mode localization research on reticulated shell structures is extremely rare in the field of civil engineering until now.

Analysis on the solar collector bracket with finite element method Junbin Gu 1, a and Yan Li 2, b 1Architecture and Civil Engineering School, Inner Mongolia University of Science and technology, Baotou, 014010, China 2 Architecture and Civil Engineering School, Inner Mongolia University of Science and technology, Baotou, 014010, China agu613@163.com, b15540130794.com Keyword: Solar collector bracket, strength, stiffness, Finite element Abstract.
[4] Alva, LH; Gonzalez, JE; Dukhan, N.Initial analysis of PCM integrated solar collectors [J].Journal of Solar Energy Engineering. 2006, 128(2)
Proceeding of the twelfth international Symposium on Structural Engineering, 2012(10).

Concrete Crack Control of Pile-to-pilecap Connection in Integral Abutment Bridges under Cyclic Bridge Movement WooSeok Kim1, a, Jaeha Lee2,b and Chan Jeoung1,c 1Department of Civil Engineering, Chungnam National University, 99 Daehak-ro, Yusung-gu, Daejeon, 305-764, Republic of Korea 2Department of Civil Engineering, Korea Maritime University, 727 Taejong-ro, Youngdo-gu, Busan, 606-791,Republic of Korea awooseok@cnu.ac.kr, bjaeha@hhu.ac.kr (corresponding), ctony0946@daum.net Keywords: Crack Control, Concrete, Connection, Integral Bridge.
Laman: Parametric Study and Length Limitations for Prestressed Concrete Girder Integral Abutment Bridges, Structural Engineering International: Journal of the International Association for Bridge and Structural Engineering (IABSE), IABSE, Vol. 21, No. 2 (2011), May, pp.151-156

Experimental and Numerical Investigation on Reinforced Concrete Beam-Column Joints WU Xiaoyong*1, a, LI Yangzhou2,b 1 College of Civil Engineering and Architecture, China Three Gorges University, Yichang, Hubei, China 2 Department of Civil Engineering, Shantou University, Shantou, Guangdong, China a xywu007@gmail.com, b li_yang_zhou@126.com Keywords: Beam-column joints, OpenSees, Lateral force, Curvature, elasto-plastic analysis.
Introduction Reinforced concrete column is an important bearing component of houses, Bridges, hydraulic and other various kinds of engineering structures, which is widely used in construction industry.
Miguel: Engineering Structures Vol. 33(2011), p. 3676-3689

Flexural vibration band gaps in a ternary phononic crystal thin plate Zong-Jian Yao, Gui-Lan Yu and Jian-Bao Li School of civil engineering, Beijing Jiaotong University, Beijing 100044, P.R.
It is known that the finite thickness, i.e. thin plate is practical in engineering.
It is practical for applications on civil engineering in its main frequency range (less than 20Hz).
It could be useful for the practical engineering.

Study of the properties of the environmentally friendly insulation materials Jiri Zach1, a, Jitka Hroudova1, b 1Brno University of Technology, Faculty of Civil Engineering, Institute of Technology of Building Materials and Components, Veveri 331/95, 602 00 Brno, Czech Republic azach.j@fce.vutbr.cz, bhroudova.j@fce.vutbr.cz (corresponding author) Keywords: Natural insulation materials, flax, thermal conductivity, sorption properties, mechanical properties.
Introduction With still growing requirements for thermal and technical properties of engineering constructions due to reduction of heat consumption and cooling costs the attention of experts also started to orientate to energy intensity of building of constructions and production of building materials.
With better thermal and technical properties of the engineering constructions the heat and cooling costs are reduced however very often the energy intensity related to the construction of buildings increases because of higher need of building materials whose production is very energy intensive (and in addition very often related to high production of CO2 and other greenhouse gases).
One of the aims of energy-saving construction is rational utilisation of natural and energy-saving material resources for formation of a construction with high manufacture qualities and for provision of healthy interior climate of buildings. [1, 2, 3] At Brno University of Technology, Faculty of Civil Engineering the research and development of natural fibrous insulation materials which could be suitable alternatives to the insulations used today, mainly polystyrene and mineral, have been carried out for several years.

Analysis of Failure Mode and Ultimate Bearing Capacity of Steel Truss Coupling Beam Qiang Hu1, 2,a, Zhiheng Deng2,b , Qian Lin2,c and Dongxiao Xu2 1Department of Civil Engineering, Guangxi University of Technology, Liuzhou, Guangxi, 545006, China 2College of Civil and Architectural Engineering, Guangxi University, Nanning, Guangxi, 530004, China ahuqiang1978_2@163.com, bdengzh@gxu.edu.cn, choholinq@126.com Keywords: Steel Truss Coupling Beam, Failure Mode, Second-order Effect, Ultimate Capacity, Span-to-height Ratio.
Combined with the engineering practice, span-to-height ratio ranges from 3.0 to 1.5 is reasonable.
[2] EOM T S, PARK H G, KANG S M: Engineering Structure.

Research on Fatigue S-N Curves of Corrosion-Damaged Reinforcement Hongwei Tang1,a, Shibin Li 2,b , Donghai Xie 1,c and Cimian Zhu2,d 1 School of Civil Engineering, Shandong University, Jinan, China, 250061 2 School of Civil Engineering, Tongji University, Shanghai, China, 200092 a tanghongwei@sdu.edu.cn, blishibin@mail.sdu.edu.cn, c2276091@163.com, d zcm@mail.tongji.edu.cn Keywords: corrosion-damaged; reinforcement; fatigue; S-N curve; bridge Abstract�Three corrosion degrees of reinforcement are chosen in this paper, which are considered to simulate minor, medium and severe degrees of corrosion in this field.
It is essential that responsible engineers have at their disposal the means to verify that the affected structures retain an acceptable margin of safety.
Its aim is to aid practicing engineers in correctly evaluating the condition of aged existing structures and/or estimate the residual service lives of corroded RC structures under cyclic loading. 3 Experimental program Table1 summarizes the experimental program and the results.