Abstract:Steel-concrete composite structure has more and more been widely used in urban bridges,for it's advantage in reducing cross-section components' size, and ascendency in improving stiffness,stability and integrity of structures and ductility of components and structures,and it's predominance in shorten the construction period as well.Among all the steel and concrete composite structure styles,the combination of steel box girder with concrete deck is now very widely used.And this style is chosen in building the cloverleaf junction of Beijing South Railway Station.The important characteristic of cross-height ratio of curve-shaped steel-concrete composite structure is that it is related to the curvature,this paper made an optimizing analysis on this subject with one curve-shaped part of Beijing south railway station cloverleaf junction as model,and analyses the relation between cross-height ratio and curvature in terms of it's design with the help of general-purpose finite element software ANSYS.

Abstract:The viscoelastic damper is a kind of efficient device for suppressing vibration and dissipating energy.The structure style and component materials of viscoelastic dampers have been introduced,three different forms of damper frame structure were established.The principle of shock absorption about the support of energy dissipation is expounded to analysis the earthquake response of three different forms of viscoelastic dampers with time history method.The center support,eccentric support and open frame building frameworks structures,such as vertex acceleration and displacement are analyzed.It is concluded that the effect is obvious to set up center support viscoelastic dampers of the concrete frame structure

Abstract:Cable-stayed structures are rational and beautiful.But cables are susceptible to vibration with large amplitude caused by special load.Then Structures will become more unsafe.Control of cables vibration is realized through linear quadratic optimal control strategy.Parametric analysis of vibration control system for flexible taut cables is conducted.The influences on vibration control are discussed due to the changes of weighted parameters.Discrimination criterion of optimal active control force and iterative computing method are given for improving design efficiency of the controller.

Abstract:The nature and composition of the improvement of municipal solid waste(MSW) were analyzed.Different proportion the quality of the fly ash cement to the MSW were blended.The unconfined compressive tests were carried out in 8 different conservation age to study the strength characteristics with the growth of a variety of conservation age.The results show that the MSW has a certain structure,but the structural weak increase its fly ash cement improved,the improved MSW has a strength enhanced markedly.But the growth of age will be a certain degree of decline.We can conclude that there are many factors which affect the strength characteristics of the MSW in the environment.

Abstract:At present,there are three criteria for evaluating stability of slope in elastoplastic FEM based on SSR technique including the abruptness of the displacement,the convergence of numerical computations or deformation at a certain characteristic location and connectivity of plastic zone.An example homogenous soil slope is analyzed by using the elastoplastic FEM based on the SSR technique and their computed results are compared with the solution of limit equilibrium.It is shown that the safety factors computed by using the three criteria are almost identical to the solution of limit equilibrium method.It is also proven that the three criteria are feasibility to analyze the homogenous soil slope.

Abstract:According to the basic theory of system identification,parameters were adjusted by using iterative method based on sensitivity analysis.Modulus backcalculateion program of the flexible pavement system was developped.The results show that the backcalculation is high-precision,stably convergent and nearly independent of the original value.

Abstract:Numerical simulation of a 4 story RC frame shaking table test model was carried out using of OpenSees finite element analysis system in this paper.Numerical simulation results include elasto-plastic time history analysis and plastic hinge evolution.It was concluded from comparisons between experimental results and numerical simulation results that numerical simulation results are consistent with experimental results.

Abstract:In order to solve the problem in the strength decline of elastic concrete,its modification treatment was carried out by using coupling agent and emulsion rubber.Meanwhile we studied its physical and mechanical properties.The results were as follows: With the increase of colloidal particle's content,the physical properties of elastic concrete decreased significantly,but deformation increased.While the mechanical properties,impact resistance and wear resistance all greatly increased with the addition of coupling agent and emulsion rubber,and the compressive strength,wear resistance enhanced by 17.3%,12.7% respectively within 28 days and tack free time shortened,which effectively dealt with the difficult problem of the decline in the strength of elastic concrete and construction.Meanwhile,we put forward the construction technology and application prospect of bridge expansion joint engineering.The conclusions above have very important reference value for the further study and appliation of this new elastic concrete in expansion joint engineering

Abstract:With example of dynamical elastic-plastic analysis(Push-over analysis) and structural seismic analysis to municipal solid waste incineration and power generation plant,the structural seismic capacity has been researched,then its applicability under seismic intensity of 8 degree(0.2g) has been discussed.

Abstract:According to the former formula and the experience,the influence to the seepage discharge and the seepage gradient when the cut-off wall's place be changed under the infinite deep pervious foundation were still not be clear.This paper makes use of the Boundary element character and the computational thereoy to abtain the formula model of sovling this problem and to establishes the corresponding computational procedure.The influence of the place and depth of cut-off wall to the seepage was also analyzed.The results can provide the reference for the next engineering design.

Abstract:A new type of dissolved air flotation apparatus with pipe type reaction and high-efficient dissolved air was studied for improving the treatment efficiency of oil wastewater.The results showed that the oil and SS removal rates of oil wastewater came up to 96% and 85% respectively under the condition of flow 0.50 m³/h,PAC 60 mg/L,reflux ratio 20%,dissolved-air pressure 0.60 MPa and coagulation rate 0.80 m/s,which indicated that the new apparatus had high efficiency and stable operation in treating oil wastewater and would have broad application prospect in oil wastewater and other wastewater treatment field.

Abstract:Aeration and no aeration are used in catalytic aluminum inner electrolysis prccess for dyeing wastewater,the treatment effects were compared by various of indexes such as COD,BOD,colority,PH etc.The results of experiments show that,the removing COD、colority in wastewater are remarkably efficient.The process with aeration is better than the process without aeration.The B/C values of dyeing wastewater treated by two different process all reach about 0.3,which is helpful to the following biochemistry processing.

Abstract:The test on treating urban sewage in Handan has been continuing for a long-term by using the composite constructed wetland system,and the purification effect were discussed in autumn and winter.The results show that the removal rates of COD,TN,TP,SS are 65%,84%,80%,91%,in winter drop off to 25%,27%,65%,89%in autumn.The purification effect and stability of system have been raised during the serial secondary sub-series.

Abstract:Groundwater which is the major water supply source in many north cities and areas in China,plays an significantly important role in the development of the regional economics.A groundwater information system is established by using the technology including Geographic Information System(GIS),three-dimensional visualization kits(VTK),Database,groundwater flow model MODFLOW and Artificial Neural Network.The system can manage and visual the groundwater data and information,simulate and predict the groundwater flow.

Abstract:Using software FLUENT in the RNG κ-ε turbulence model with Reynolds number 20000 and spacing ratio s/d equaling to 1.75,this article simulates two cylinders' drag and lift coefficients in four engineering conditions,as the two cylinders are set in serial,in parallel,as well as there are angles of 30 and 60 degrees between the line connecting column centers and the flow direction.The acquired conclusions are as follows: The drag coefficient increases with the increasing angles,which reaches maxim when the cylinders are in parallel,while it is minus with the cylinders in serial;as to the lift coefficient,the integral is not equal to 0 besides the two cylinders are in serial.

Abstract:The combination of floor cooling and displacement ventilation is a common method, which was used in the engineering application. Displacement ventilation not only offers fresh air for room's sanitary requirement, but also prevents the floor surface from condensation. This paper analyzed the floor cooling and displacement ventilation in the experiment and the theory, which indicates that the displacement venti-lation can not solve the condensation problem but reduce the condensation in some degree. It comes to the conclusion that the condition point of the dry fresh air in displacement ventilation is relation to the indoor and outdoor humidity environment, and real - time monitoring can prevent the surface from condensation.

Abstract:Order structure of illite-montmorillonite mixed-layer mineral was judged by coefficient of variation,based on mathematical statistics theory.Through the X-ray diffraction,characteristic peak height of illite-montmorillonite mixed-layer mineral was obtained.Being statistical object,these data were progressed in statistical calculation by coefficient of variation method.It was shown that coefficient of variation of 6 samples was below 0.75.Mixed-layer structure of illite-montmorillonite in all samples was regular mixed-layer.Difference coefficient method is rapid and accurate for the judgement of orderliness of illite-montmorillonite mixed-layer mineral,compared with interval coefficient method.

Abstract:BARA Coal Mine is located in the north-west Sumatra which belongs to NAGAN RAYA county,Aceh Special District,Indonesia.It is one of the five big sedimentary basins in Indonesia,called Westen Qiya basin with simple structure.It is rich in coal resources and the Coal-bearing strata being Cenozoic Neogene Pliocene Tutut group.The river controlled delta depositional system was developed in in shallow sea in coal-forming period.It is suitable for open pit mining because the engineering geology,hydrogeological conditions is very simple.In BARA Coal Mine,the main mining coal seam is the C1 and D1 seams,which are highquality lignite with low to medium ash content,low to medium sulfur content low harmful components content and high calorific value.

Abstract:Coal quality characteristics were obtained from the study of coal quality of upper formation in Cixi exploration district.It was found that lithotype is belonged to bright coal and semibright coal,mainly black.Vitrinite of organic components in coal samples is most important,and inertinite takes second place,exinite little.The main components in inorganic components were clay minerals.Sulfur content of 2#,4#,6# raw coal range from 0.09% to 1.54%,0.98% to 3.80% 0.24% to 4.18%,and the average value were 0.36%,2.50%,2.44%,respectively.In this district,ash content in high yield varied from low-ash to high-ash.It can be concluded from the relationship between sulfur content,ash content,maceral and coal-forming environment that the sedimentary enviroment belong to peat bog formed in carbonate platform,barrer island-lagoon,tidal flat and peat bog in delta plain.

Abstract:The process of coal-lane's digestion and support are simulated by the two-dimensional finite-different computer codes(FLAC) on the ground of 2610 working place belonging to Dongpang Mining of Jinniu Energy Corporation of Hebei and the design of support is optimized aimed at anchor rod or anchor cable in the surrounding rock unbroken.The simulation results showed that the plastic zone reduced largely and integrity of surrounding rock increased after applying optimum support parameters to coal lane.The actual project confirms perfectly that it is a feasible method in the support of coal mine and acquires very well effects of technology and economy.

Abstract:Based on stress-strength interference model,the relationship of average safety factor and reliability are derived when the distribution of stress and strength are subordinated to normal distribution or others,and the reliability design method based on average safety factor were introduced.It is shown that the reliability design method is feasible and useful to improve the design standard for mechanical parts and reduce the cost of them.

Abstract:SBT ceramics were prepared from nano-sized powders obtained by hydrothermal method.The phase,particle size,morphology and dielectric properties were investigated by X-ray diffraction(XRD),scanning electron spectroscopy(SEM) and dielectric spectra,respectively.The results showed that the pure phase SBT ceramics with uniformly small grain and dense structure were successfully prepared by this method.The Curie temperature is 375℃ where the maximum dielectric constant is 114.54.

Abstract:The qualitative identification of different wine through artificial electronic nose are introduced.PCA and ANN(including improved BP algorithm and RBF algorithm combining nearest neighbor-clustering algorithm and K-means clustering algorithm) are adopted to realize the identification.The test result indicated that the rapid and exact identification measure of ANN combining PCA is provided to the pattern identification.

Abstract:Attack model BBFPAN based on both-branch fuzzy decision-making and fuzzy Petri net has some drawback such as can not depicting the network attacks pictorially.Based on set pair analysis,a both-branch set pair analysis model is put forward to the attack model BBFPAN.The multilayer set pair of attack model BBFPAN has been discovered in the both-branch set pair analysis model.The relationship between the factors of the attack model BBFPAN and the network attack can be depicted as the connection degree.The relative degree of decision weight successes to attack and defense can be determined through the close-degree.The basic step of both-branch set pair analysis model on attack model BBFPAN is also proposed which can help the attack model reasoning with the Set Pair Analysis.

Abstract:The environment is the key to the success of real estate investment.Therefore,it is very important for the investment environment evaluation of real estate.Firstly,the basic theory of support vector machine for regression(SVR) was introduced,and then a SVM to evaluate the investment environment of real estate was builted.Through simulating and comparing with the method of BP neural network,the method is proved effectiveness.

Abstract:Based on option pricing theory models explores, the problem whether the mortgagors should am-ortize in advance under the circumstance were explored. TTie price of real estate is driven by geometric Brown motion (GBM). The problem was solved through the optimal stopping time theory with explicating option value in amortizing decision. It also explains the economic and policy implications of the model through making the reachable analysis and comparative static analysis for the results.

Abstract:the membrane is polluted in ultrafiltration separation, and the flux of membrane is reduced. In this paper, the pollutants^'composition and process of pollution were summarized. Membrane materials, raw materials and operating conditions influence membrane pollution was analyzed. Raw materials is pre-treated, membrane materials and module are improved, operating conditions and process are controlled to lighten membrane pollution. The polluted membrane flux is recovered through physical and chemical clean-ing.

Abstract:Based on summarizing the soil-borne diseases at home and abroad,PGPR compound agents were applied in greenhouse pepper with 6-year production.The results show that PGPR compound agents can significantly improve the growth traits of pepper and reduce the incidence of bacterial wilt,it can increase production and reduce the value of soil EC.

Abstract:Recently,Li Fang-wei et al.presented forgeability and linkability attacks on WANG et al's proxy blind signature scheme and improved WANG et al's scheme,unfortunately LI et al's linkability attack is failed and the scheme still satisfies the unlinkability property;LI et al' s proxy blind signature scheme is analysised and impvroved,the new proxy blind signature scheme is of more security and higher efficiency.

Abstract:In this paper,we consider a class of second order neutral difference equations with continuous arguments.Some sufficient conditions for the oscillation of above equations were obtained

Abstract:The domain X of the fuzzy F(X) set of all the algebraic concept of the structure and principles of the incomplete set of fuzzy Mathematics have a fundamentality of the reasons for the crisis,and it is clarified that the Law of Justice is not a panacea,it will make mistakes if we ignore the concept of the principle