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Theory of Fast Multipole Virtual Boundary Element Method and Discussion on Key Issues Yantao JIANG1, a, Hongyuan BAI2, b 1 College of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing, China, 400074 2 China Ctdi Engineering Corporation, Chongqing, China, 400039 awaterbird77@sina.com Keywords: fundamental solution; fast multipole; virtual boundary element method; leaf Abstract.
The corresponding reference value is put forward for the convenience of engineering application.
Introduction Most physical, mechanical and engineering problems can be regarded as the boundary value or initial value problems of mathematical physics equations.
The corresponding reference value is put forward for the convenience of engineering application.
The corresponding reference value is put forward for the convenience of engineering application.

Cost of this combined support scheme is low, its process is simple and its application prospect is wide. 1 Engineering geological features of soft rock At present, soft rock that scholars are talking about is the “engineering soft rock”, that is, the engineering rock which will have a significant plastic deformation under the actions of engineering forces.
In the view of specific engineering examples, now, supporting in soft rock roadway is far from success at home and abroad.
Soft rock engineering mechanics [M].
Coupled Bolt-Mesh-Anchor-Truss Supporting Technology and Its Engineering Application to Deep Soft Rock Roadway.
Chinese Journal of Rock Mechanics and Engineering, 2009, 28(2): 3914-3919

As the standpoint of “energy-saved and environment-protected” is commended in civil engineering presently, the rapid improvement technique of shallow base will instruct the design and construction when treating the super-soft foundation in land reclamation. 2.
China Communications Construction Company Fourth Harbor Engineering Institute Co., Ltd began the research on the rapid improvement technique of the shallow base made of dredged soil in 1990s, and a series of propriety techniques have been developed and applied to the engineering practices successfully . 2.1.
Techinque in soft Ground, Japanese Society of Soil Mechanics and Foundation Engineering,1984,103-119 [4] Lee S L.
Port & Waterway Engineering,2000（4）：12~13(in Chinese)
CHINESE JOURNAL OF GEOTECHNICAL ENGINEERING, 2002(4)：522-524(in Chinese).

Durability improvement of concrete in the environment of compound salt and freeze-thaw cycles by incorporating mineral additives Hu Mingyu1,a Peng Jinsheng1,b Ding chengping1,c Chen Jianyi2 1 College of Civil engineering, Nanchang University, Nanchang Jiangxi, 330031, China 2 College of Civil & Environment Engineering, East China Institute of Technology, 330013, China a humingyude@163.com; b pengjinsheng@ncu.edu.cn; c dingchengping01@163.com Key words: the complex environments of chloride, sulfate and freeze-thaw; concrete; durability; mineral additives Abstract: Durability improvement of concrete in the complex environments of chloride, sulfate and freeze-thaw, by incorporating compound mineral additives of fly ash, slag, diatomite and zeolite in concrete, was studied through the approach of orthogonal array testing and related analysis.

Hybridization of ODNs with the Core-Shell Structure of Fe3O4 Nanoparticles and CS/ALG Composite Structure Ho Chang1, a, Yan-Chyuan Wu1,b, Chih-Hao Chen1,2,c, Ren-Jei Chung2,d, Kung-Ching Cho4,e, and Wei-lin Lin1,f 1Department of Mechanical Engineering, National Taipei University of Technology, No. 1, Sec.3, Chung Hsiao E.
Taipei 10608, Taiwan 4Department of Civil Engineering, Texas A&M University, College Station, TX 77843-3136, USA af10381@ntut.edu.tw, bwuychn@yahoo.com.tw, cmusclenet2003@yahoo.com.tw, drjchung2ntut.edu.tw, ekccho@civil.tamu.edu, ft7568009ntut.edu.tw Keywords: Fe3O4 nanoparticle, chitosan-alginate (CS/ALG),oligodeoxynucleotides (ODNs), hybridization, nano-indentator Abstract.

Supercritical Carbonation of Lightweight Aggregate Containing Mortar: Thermal Behavior MARÇAL Rosas Florentino Lima Filho1,a, SANDRO Marden Torres1,b, LEON Black2,c , ANDRESSA de Araújo Porto Vieira1,d, RODINEI Medeiros Gomes1,e and KELLY Cristiane Gomes1,f 1Universidade Federal da Paraíba, UFPB/CT Campus Universitário sn 50051-900 João Pessoa – PB, Brazil 2The University of Leeds, School of Civil Engineering, Leeds, LS2 9JT amarcal_civil@yahoo.com.br, bsandro.marden@pq.cnpq.br, cl.black@leeds.ac.uk, dandressa.pv@hotmail.com, egomes@lsr.ufpb.br, fgomes@cear.ufpb.br Keywords: lightweight aggregates, perlite, vermiculite, concrete, supercritical carbonation.
Ben Hughes (Faculty of Engineering-Leeds) and Prof.

Bennett a,b,∗ a Department of Civil and Structural Engineering, The University of Sheffield, UK.
b School of Civil, Environmental and Mining Engineering, The University of Adelaide, Australia.

Strategies for Ecological Development of Cities and Towns in Xi’an Metropolitan Area----Based on the Construction of Eco-Corridors of Weihe River System Dingqing Zhang 1, a, Junjie Li 2,b and Xiangming Cao 3,c 1Associate Professor, School of Human Settlements and Civil Engineering of Xi’an Jiaotong University, Xi’an, China, 710049 2 Ph.
D Candidate, School of Architecture of Tsinghua University, Beijing, China, 10084 3 Associate Professor, School of Human Settlements and Civil Engineering of Xi’an Jiaotong University, Xi’an, China, 710049 a zhangdq@mail.xjtu.edu.cn, b qiqiyu_ljj@qq.com, c caoxm@ mail.xjtu.edu.cn Keywords: eco-corridor, Xi’an metropolitan area, ecological development of cities and towns Abstract: Weihe river system, which is the structural frame of physical geography in Xi’an metropolitan area, has close relation to the development and construction of cities and towns.

Petersburg, Russia 3,4Tomsk State University of Architecture and Building, Solyanaya sq. 2, 634003, Tomsk, Russia 5,6Saint Petersburg State University of Architecture and Civil Engineering, 2-nd Krasnoarmeiskaya St. 4, 190005 St.
Pukharenko, Effektivnost' primeneniya fibrobetona v konstruktsiyakh pri dinamicheskikh vozdeystviyakh, Proceedings of Moscow State University of Civil Engineering. 3 (2014) 189-196

Influence of Different Fillers in Polymer Matrix of Single Roving on the Tensile Properties VLACH Tomáš 1, 2, a, *, LAIBLOVÁ Lenka 1, 2, b and HÁJEK Petr 1, 2, c 1 Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29 Prague, Czech Republic 2 Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Trinecka 1024, 273 43 Bustehrad, Czech Republic a tomas.vlach@cvut.cz, b lenka.laiblova@fsv.cvut.cz, c petr.hajek@fsv.cvut.cz Keywords: Roving; Epoxy Resin; Filler; Composite; Tensile Properties.
This type of research was recently started at the Faculty of civil engineering CTU in Prague.