Abstract:In this paper,a calculation model of Coldformed thinwall steel which under the axialcompression load was set up by using the coupled bendingtorsional deformation classical theory,and then the Lagrange function and the Lagrange equations were got;A Hamiltonian functions wasconstituted by introducing dual variables,the use of Hamiltonian mechanics leaded the question fromthe Lagrange system to the Hamilton dual system,then the Hamilton’s canonical equations whichwere used to analyze stability of thinwalled bar were established.The precise numerical value ofcritical load could be achieved according to the using of dichotomy theory and precise integrationmethod.This method has higher precision and the calculating process is simple and clean.This meth-od can be extended to apply to study the stability of the Variable Crosssection.

Abstract:The heat conductivity in the FGM plate was expressed by exponential function along theheight direction of the plate,based on the plane steady heat conduction basic equation of the plate,the series analytical solution of the plane steady temperature fields of in the plate subjected to the dif-ferent constant temperature of boundary was derived by variable separation method.Compared withFEM,the maximum node temperature error of two methods was 0.86%.Through the numerical cal-culations,the plane steady temperature field distributions in the plate were obtained,and the effectsof material gradient parameters and the geometric composition of the plate on the temperature fieldswere studied.The main results show as follows:(1)The temperature field distribution in the plate issymmetrical to the axis y through the centroid.(2)With the increase of gradient parameter value,thehigh temperature zone in the plate is extended to the two sides and lower side of plate.(3)With thedecreasing of the plate height,central lower temperature distribution in the plate tends gently.Thus,the suitable selection of gradient parameter and geometric composition can meet the need of the de-sign,application and analysis of the thermal stress,and the analytical solution obtained can be usedas a reference standard for other approximate methods.

Abstract:Tests have been carried out to study the mechanical property when the negative bending re-gion of combination of steelconcrete composite box beams is under compression.This paper empha-sizes the discussion of the computation model of the local stability when box beams is under compres-sion.By comparing the local stability of box beams when under compression with the box beams whichis welding studs,pouring concrete slab of certain thickness,this paper is to provide the reference forthe optimization design of the bottom slabs of the negative bending region of combination of steel-concrete composite box beams.Results showed that castinplace concrete slab in compressionstate can effectively prevent the occurrence of local buckling instability;it can reduce the stress of theconcrete slab and improve the negative bending region of concrete beams of the ultimate bearing ca-pacity.

Abstract:Considering that the reinforced pipe rack participates in the overall force,the overall rein-forcement pipe rack was simulated by using the finite element software,the bearing capacity of themodel of monolithic plane frame and the overall calculation model using the same structural character-istics were analyzed.The results showed pipeline involved in the overall force,the overall supportforce value of reinforced pipe was smaller than the monolithic planar frame calculation,and the differ-ence value of reinforced rack closer to fixed tube frame was small.In order to reduce the amount ofsteel,we may reduce appropriately its reinforcement steel sections.

Abstract:Comprehensively considering depththickness ratio in the role of the earthquake on the in-fluence of multilayer steel plate shear wall,the stress and displacement of the steel plate shear wallwere analyzed by using the finite element method to establish the four layer single span steel plateshear wall and four layer three span steel framesteel plate shear wall lateral force resisting analysiscalculation model.The result shows that the steel structure of the depththickness ratio influence onearthquake resistance;the four layer three span steel framesteel plate shear wall system is betterthan the four layer single span steel plate shear wall system seismic performance;it is suggested thatunder normal circumstances,the muftilayer single span steel plate shear wall thick steel plate isdepththickness ratio values for =200300,multilayer high mufti span steel plate shear walplate depththickness ratio values for=200400.

Abstract:To calculate the bearing capacities of axiallyloaded short columns of concrete filled doub-1e skin steel tubes,the lateral compressive stress the horizontal bearing stress and of the inner andouter steel pipes under the effect of axial pressure on the core concrete were analyzed by according thetwin shear unified strength theory.The vertical ultimate bearing stress of the inner and outer steelpipes was.calculated by according to the twin shear unified strength theory.Combined with bearingcapacity of the core concrete,the simplified formula to calculate the bearing capacity of short columnwas derived.Results of the theoretical formula solved by numerical method were inline with the exper-imental data at home and abroad.

Abstract:Based on the test of the single pile load,axial force from different depth can be measured inthe way which dividing the depth of the pile into several sections场stratifying the pile and burying re-inforcement meter into it evenly.Settlement of the top of pile under various levels load is also meas-ured in the same way.Under the vertical load,QS curve characteristics of the single pile as well asdistribution of the axial force are precisely analyzed in this article.Pile axial force along the pile grad-ually decays with the increase of the load level;the rate of the decay is getting bigger at the sametime.It changes severely with the change of the depth of the pile.

Abstract:To verify the effects of viscoelastic damper for seismic mitigation,a sixstorey steel framestructure with viscoelastic dampers and the original structure without viscoelastic dampers are estab-lished and compared by the finite element analysis software MIDAS/GEN under horizontal seismic.The analysis testified the efficiency of viscoelastic dampers by comparing structure with viscoelasticdamper to common structure.

Abstract:Based on the 0.Nigol mechanism,the dynamics model of galloping transmission lineswhich considering the transverse and torsion coupling is constructed.By using the mathematical meth-od with decoupling of inertia term and Matlab program,the dynamic system was simulated.The influ-ences of wind velocity,vertical damping,static tension,thickness of ice,density of lines and air den-sity on the amplitude of galloping were obtained.The variation of galloping amplitude under differentsystem parameters were analyzed,it showed that the parameters of the speed of wind was the mainreason for determining the transmission lines galloping,which provided valuable reference and in-struction for solving the similar practical engineering problems.It is shown that the bifurcation of peri-odic solutions appear with the increasing of wind speed.

Abstract:Garden is the ideal paradise for human beings.Diffrerent environment and view of naturecreates different ideas of garden and realistic garden styles.Chinese classical gardens pursuit thehamony between man and nature and emphasize the hamony between nature and spirit while Westernclassical gardens pursuit the order and geometrical beauty and emphasize the control of nature.Thepaper first discussed the differences between Chinese classical gardens and Western classical gardens.Then it analyzed the main reasons for the above differences.In the end,it pointed out the essencereason was the difference of natural environment.

Abstract:This article takes the spatial developmental planning for Heqi industry cluster district in He-bi City for example.According to ecological design concept and technology,the ecological planningpractices for Heqi industry cluster district were discussed from the status of ecological environment in-vestigation,base suitable sexual analysis,protection measures for air,water,noise and solid waste,landscape ecological pattern building,circular economy and the consideration of the ecological bene-fits.The results show that the method basing on the design above can reduce pollution and save re-sources,protect the ecolocal environment and can promote the sustainable development of economy.

Abstract:Based on "The Luoyang Famous Gardens Record",this paper selected Fu Zheng Gardenand Du Le Garden as the main objects to study the title creative background,content,style,artistictechnique and expression of taste,then this paper summarized gardens’title literati features of theNorthern Song Dynasty Luoyang gardens.At the same time,this paper pointed out the Northern SongLuoyang gardens’title art and cultural characteristics,the rich literary talent and romantic mood tom-bined with plain and rational mood.That is a combination of rational and interesting.This period gar-dens’title art reflect the contradictory feelings of hermit spirit and officialdom.

Abstract:Guo River is the inland river flowing through the whole center of TongXu County,the waterfront landscape planning of its western line directly affects the development of the city.In the re-spect to the history and culture of TongXu County and protecting the ecological environment,makinguse of the ecological culture resources,integrating urban culture design elements,and presenting thespace landscape features of Guo River waterfront will be the essence of the whole program.Concern-ing with the researches on historical and cultural connotation of TonXu County,and considering withthe real life example of Waterfront Park of Guo River,this article elaborates the usage and upgradingof culture elements in waterfront landscape,and create the sustainable development of urban water-front environment in TongXu County.

Abstract:The combined process of "coagulant sedimentation+03+biosand filter+GAC" was a-dopted to treat secondary effluent of wastewater treatment plant,and the impacts of ozone dosage onpollutants removal were investigated.The experiment results showed that the average removal rates and chroma were 70.61%,54.92%,20.63% and 42%,respectivelywhen the ozone dosage varied in a range .When the ozone dosage was 3mg/L,theprocess reached the highest removal rate of and chroma,which were 99.41%,80.13%,28.06% and 58.33%,respectively.It can be seen that combined process of "toagulant sedimentation biosand filter+GAC" has a effectively pollutants removal rate in sec-ondary effluent treatment,and it can improve the water quality comprehensively.The process has abright prospect application in secondary effluent treatment.

Abstract:Using the experimental carbonsand filter system to make the PAC and PALL mixedsludge circumfluence to flocculation pool,the removal effect of organic matter and ammonia nitrogenwas investigated,the optimal reflux ratio are obtained.The results show that when the system is insteady running,coal mud reflow process on turbidity,organic matters and ammonia nitrogen removalefficiency are better than carbon mud reflux process;within a certain range(3%)or less,the remov-al rate increases with the increase of reflux ratio increases;when the reflux ratio is 5%,because ofthe microflocs and excess backflow sludge,the effect of sedimentation tank and filter burden is tooaffecting the removal efficiency of each index.

Abstract:Numerical simulation of the complex terrain long river flow form will meet many difficultiesin the simulation process.This paper takes SuiNing reach city for example to analysis two dimensionalnumerical simulation,and uses hot start,mesh refinement different to processing difficulties.The re-sups show that mathematical model calculated value and the test value can be better coincidence_which will provide a reference for river flow morphology study.

Abstract:On the basis of thin section,scanning electron microscopy,physical property analysis andmercury injection analysis,the reservoir characteristics and main control factors of Triassic clastic res-ervoir in Southern Qilian Basin were studied.The results indicate that the cIastic reservoir sandstoneis mainly composed of medium to fine grained feldspar sandstone and the textural and compositionalmaturation of the reservoir is low.The main reservoir space types are interstitial content pores,disso-lution pores and fractures.In additional,the reservoir pore structure is characterized by mini porethroat,poor sorting,poor connectedness and poor infiltrating ability.The reservoir physical propertiesare poor,with low porosity and Iow permeability.Moreover,the development of reservoir is mainlycontrolled by sedimentation,diagenism and favorable tectonic condition.Comprehensively consideringabove analysis,the Triassic clastic reservoirs have been divided into type V,type V[ and type V1I,o-verall belonging to tight reservoirs with ultralow porosity and permeability.

Abstract:Based on statistical analysis of known geological hazard points,this paper summarized thedevelopment characteristics and laws of abrupt geological hazards in northern mountainous area ofTianjin.The relationships between abrupt geological hazards and topography and geomorphology,for-mation lithology,geological structure,rainfall,human engineering activity,etc,were studied.Theresults could provide the scientific basis for disaster prevention and mitigation for government depart-menu and city’s public safety services.

Abstract:We build mechanics models that are based on the parameter of mining technology conditionsand rock mechanics property in a mine and use RFPAZ0 numerical simulation software to forecast theheight of overlying rock’waterflowing fractured zone and use empirical formula to estimate theheight and measure actually the height of cavity’working face.We compare the numerical simula-tion’s height using software and the actual measurement’s height,the result demonstratesthat they are mostly equal.So the numerical simulation’s result can be the basis to carry out the minewater prention and control.but we must consider the forecast deviation ratio.

Abstract:For improving the inefficient of the currentd computing,the decimal real number enco-ding rules wa chosen to generate initial antibody group.Firstly,theimmune genetic algorithm was used to generate the initial pheromone distributionin the collection,then the parallelism of the ant colony algorithm was used for global search,finally the particleswarm optimization(PSO)and ant colony genetic algorithm were compared by using C1oudSim as a simulation platform to simulate.The results indicate that the improved immune genetic algorithm can provide eff cient task scheduling strateav and it can solve the problem more effectively.

Abstract:Leaf spring multibody dynamics model was established by using discrete BEAM methodsim plified equivalent neutral surface,the results of simulation analysis of the model were comparedwith the experimental results.The modeling parameters of the leaf spring assembly characteristics onvehicle performance were analyzed by implanting the model to suspension system arid vehicle model.The results indicate that the discrete BEAM method to establish the leaf spring model is able to simu-late the actual characteristic of leaf spring.The vehicle with oversteer or excessive understeer charac-teristics can obtain the desired understeer degree by lowering or raising the eyehook position.

Abstract:This article proposes the engine hood performance design requirement.The car engine hoodwas tested in the dent resistance,bending,torsional and lateral load conditions though the test staticstiffness system.The test results show as follows:The structure of the hood inner panel is the impor-tant factors to dent stiffness,the smaller stiffness,the residual deformation is larger;The bending andtorsion stiffness reflect the overall performance of the engine hood;Lateral stiffness does not meet thetarget value,the structure of the hood inner panel and hinge are needed to optimize.Static rigidityprovides a test support for CAE simulation and conceptual design improvements of the engine hood.

Abstract:The vibration caused by slot milling machine for cutting impacts angle sensor measuring re-sult.Primary vibration isolation cannot reduce the vibration in cutting process,so that we must carryon the secondary vibration isolation in order to reduce the influence of measurement of angle sensor.This paper analyzes the basic principle of vibration isolation;the vibration of the angle sensor will besimplified into single degree of freedom model.Aiming at the design of the sensor vibration isolator,the author analyzed the rubber vibration isolator design parameters.The rubber material and vibrationisolator structure design were studied.The results could provide design basis for sensor vibration isola-tion research and vibration isolator.

Abstract:Some concept about type selection for mine wire rope change with the implement of"Steelwire ropes for important purposes"(GB89182006),"Steel wire ropesVocabulary,designationand classification"(GB/ T87062006)and“the coal safety rules"(2010 Edition).Some calcula-tion formulas are adjusted.In this paper,some new concepts were defined and the derivation proces-ses of some new formula were given.All above could make new standards be applied in practical engi-neenng.

Abstract:Video mining principally involves 3 levels of operation,namely,video data preprocessing,video feature data extraction,the discovery and representation of video mining pattern.Aiming at theabove manipulations,the current study probe into the researches of video data mining by taking therecognition of body posture and the comprehension of action as the mining tasks.The paper puts for-ward a DBAN basic framework with the notation of planar body part so as to enhance the accuracy ofbody posture positioning and the precision of its action recognition,which has been given testimony tots availability through one empirical research.

Abstract:Currently,the bidding system is widely implemented in construction projects.It is a tom-petitive procurement mode and bid evaluation is an important part of it.According to the applicationproblem of bid evaluation model,this paper proposes an unascertained measure model based on entro-py weight evaluate comprehensively.It can be applied to a new area and provide a new method for thebid evaluation.The comprehensive weight which combines with entropy right and subjective weightcan improve the method of calculation for the weights.The determination of evaluation index systemand the quantitative analysis should be scientific and reasonable.The result demonstrates that themodel proposed is of feasibility and practical significance.

Abstract:With the growing popularity of microcredit,the ansis methods are being matured,butthey are still insufficient.This paper applied microcredit evaluation fuzzy analytic hierarchy processto determine the index weight in the hierarchy.It gave five standard fuzzy state vectors for micro-credit rating to construct a microcredit rating model for banks and other financial institutions,whichprovided a scientific basis for them.The example showed the effectiveness of the method.

Abstract:Uncertain variable is used to represent imprecise quantities and is one of three fundamentalconcepts in uncertainty theory.By using the linear uncertainty distribution and a structural method,this paper proves an existence theorem on uncertain variable.This theorem shows there must exist anuncertainty space and uncertain variable-for a given uncertainty distribution.