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Jiang S.Y.,Guangxi Polytechnic of Construction | Wei Z.W.,Guangxi Polytechnic of Communication
Advanced Materials Research | Year: 2014

This article describes the application of GPS in highway measurement, points out the error of GPS in highway measurement, expounds how to reduce the error to improve measurement accuracy and widen the application fields of GPS. © (2014) Trans Tech Publications, Switzerland.

Yang L.,Guangxi University | Li Z.,Guangxi Polytechnic of Construction | Yang X.,Guangxi University
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012

Both the traditional response surface method (TRSM) and the stochastic response surface method (SRSM) for structural reliability are for scalar random variables at a given point of interested domain. This paper presents a vectorial type of cooperative response surface method (CRSM) to obtain structural reliability index. The linear expansions are presented for stiffness matrix and the nodal force vector. A suitable preconditioner is defined so that a set of hierarchical basis vectors are developed, with which a preconditioned Krylov subspace is expanded. The nodal displacement vector is approximated using the hierarchical basis vectors so as to define a cooperative response surface model. The sample points are determined in term of one-dimensional Hermite polynomials. Examples show that the proposed method is of high accuracy, global applicability and fast convergence.

Liu X.J.,Guangxi Polytechnic of Construction
Applied Mechanics and Materials | Year: 2014

In the expansive soil steep slope treatment, research and generalize FRP materials anchor bolt instead of steel anchor bolt. Selected appropriate expansive soil slope on the premise of comparability.Made FRP bolt and steel bolt contrast test formulation. The two types of anchor, stress, displacement, crack, ultimate bearing capacity test results contrast were analysed. It is concluded that the total effect of the four aspects of two kinds of bolt support is almost. But from the perspectives of durability, taken together, should change the traditional slope supporting methods, and the FRP bolt faster and more widely used in the expansive soil slope supporting. © (2014) Trans Tech Publications, Switzerland.

Duan C.-Y.,Guangxi Polytechnic of Construction | Chen H.,Guangxi Polytechnic of Construction
Environment, Energy and Sustainable Development - Proceedings of the 2013 International Conference on Frontier of Energy and Environment Engineering, ICFEEE 2013 | Year: 2014

The toxicity bioassay employing Luminescent Bacterial was used to evaluate the evolution of the quality of reservoir water as the source water of the waterworks in China. The toxicity of the source water into the waterworks were studied in the stretch in question, together with the impact of microcontamination on the source water. A technique of microcontaminant concentration using TOX-control was used to detect different degrees of toxicity along the stretch studied. This study established a comprehensive range of the biological toxicity baseline of the raw water for a waterworks. It has practical guidance significance to emergencies of water quality. © 2014 Taylor & Francis Group, London.

Zhang X.,Guangxi University | Kong X.,Guangxi Polytechnic of Construction
Advanced Materials Research | Year: 2012

In Nanning basin, because of the peculiar relief and stratum model, the bearing support soil layers for pile foundation of high-rise buildings generally is gravel layer or mudstone layers or sandstone layers. On first or second terrace in basin, gravel layer is most chose as the bearing stratum for pile foundation of high-rise buildings. Static driven piles are commonly used in Nanning, because they have advantages of fast construction, high bearing capacity and noiseless despite costly. In this paper, the actual test data of a 32-stories apartment building of a college in Nanning has been consider- ed in detail. According to the present situation of project operations, the test results show that the piles which length is less than 6m can fully meet the design requirements. This project is a successful example. © (2012) Trans Tech Publications, Switzerland.

Pang Y.L.,Guangxi Polytechnic of Construction | Dai D.M.,Guangxi Polytechnic of Construction
Advanced Materials Research | Year: 2014

Aiming at soft soil foundation, this paper simulates the process of dynamic compaction on soft soil foundation by ABAQUS, and analyzes soil stress and displacement under the effect of same tamping energy on different drop height, ram. The law of consolidation on the soil foundation has been forecasted more accurately, which is more valuable for the similar project on dynamic compaction on soft soil foundation. © (2014) Trans Tech Publications, Switzerland.

Pang Y.L.,Guangxi Polytechnic of Construction | Dai D.M.,Guangxi Polytechnic of Construction
Advanced Materials Research | Year: 2014

This article describes the basic format of extended finite element method (XFEM), and simulation the crack propagation of fiber reinforced materials with extended finite element. Explore the number and elastic modulus of fibers influence the crack propagation by changing the elastic modulus and quantity of the fibers in matrix. © (2014) Trans Tech Publications, Switzerland.

Peng L.X.,Guangxi University | Tao Y.-P.,Guangxi Polytechnic of Construction | Li H.-Q.,Guangxi University | Mo G.-K.,Guangxi University
Mathematical Problems in Engineering | Year: 2014

Based on the first-order shear deformation theory (FSDT) and the moving least-squares approximation, a new meshless model to study the geometric nonlinear problem of ribbed rectangular plates is presented. Considering the plate and the ribs separately, the displacement field, the stress, and strain of the plate and the ribs are obtained according to the moving least-squares approximation, the von Karman large deflection theory, and the FSDT. The ribs are attached to the plate by considering the displacement compatible condition along the connections between the ribs and the plate. The virtual strain energy formulation of the plate and the ribs is derived separately, and the nonlinear equilibrium equation of the entire ribbed plate is given by the virtual work principle. In the new meshless model for ribbed plates, there is no limitation to the rib position; for example, the ribs need not to be placed along the mesh lines of the plate as they need to be in FEM, and the change of rib positions will not lead to remeshing of the plate. The proposed model is compared with the FEM models from pieces of literature and ANSYS in several numerical examples, which proves the accuracy of the model. © 2014 L. X. Peng et al.

Yi M.,Guangxi Polytechnic of Construction
WIT Transactions on Information and Communication Technologies | Year: 2014

Present landscape design is made by computer through design software, which has greatly improved landscape design efficiency. First, the concept and characteristics of three-dimensional visualization technology were introduced in this work. Then, the effect of three-dimensional visualization software in landscape design was analyzed according to the status. Results show that three-dimensional visualization technology is vital for landscape design, and the idea of threedimensional visual design should be built. © 2014 WIT Press.

Yu M.,Guangxi University of Finance and Economics | Dai Z.H.,Guangxi University of Finance and Economics | Hu G.J.,Guangxi Polytechnic of Construction
Applied Mechanics and Materials | Year: 2014

The extended finite element method (XFEM) is a numerical method for modeling discontinuity such as cracks, holes, inclusions etc within a standard finite element framework. In the XFEM, special functions which can reflect the problem's solution characteristics are added to the finite element approximation using the framework of partition of unity. Compared with the standard finite element method, it obtained more accuracy without remeshing. In this paper, we studied crack propagation behavior under different proportions of tension and shear loads by XFEM. © (2014) Trans Tech Publications, Switzerland.

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