Abstract:The C40 super fine sand concrete is produced by using Handan local material and the influ-ence of water-binder ratio, fly ash replacement rate, and sand ratio on the 28 d compressive strengthand workability are studied in orthogonal experiment design.The results show that fly ash replacementis the most primary factor effecting on 28 d compressive strength and sand ratio is the most primaryfactor effecting on workability.Appropriate fly ash replacement can improve the 28 d compressivestrength.With the increase of sand ratio, slumps decrease sharply and strength decreases slightly.Itcalls for using the 0.45 as water-binder ratio, 10% as fly ash replacement and 30% as sand ratio tomake reasonable design of mix proportions, we can obtain the super fine concrete strength that its 28d compressive strength reaches to 59.1 MPa, for 60mm of slump.

Abstract:The cement plaster material is a new type of material of simulated rock, not only retains thecement's good mobility advantage, but also substantially improves the compressive strength and shearstrength of the mortar, and the failure mode is very similar to the actual rock, obviously which is a i-deal similar simulation material.In this paper, we use this cement plaster material to simulate the sin-gle-jointed rock, and then analyze the three-dimensional rock models with different obliquities jointto discuses the compressive strength variation by FEM.The study confirmed the reliability of the ce-ment plaster material, which laid the foundation for further development of the size effect and the frac-tal jointed rock mechanical properties.

Abstract:In this paper, unsaturated frozen soil moisture and heat transfer coupling model were estab-lished based on the theory of porous media.Assuming that the water migration process was one-wayand reversible and without solute transport, water transport equation of without and with phase transi-tion were derived based on nonlinear Darcy's law.Then the heat transfer equation in soil and thechange equation of quality of soil skeleton density were introduced into the model and in this process, the temperature variation during phase change of water in frozen soil and the interaction between tem-perature and quality changes were considered.At the same time, the effect of diffusion and convec-tion were taken into account too.Eventually the equation of water and thermal distribution of unsatu-rated frozen soil was got.And the method for determining the model parameters was given.Model e-quations are nonlinear partial differential equations, only numerical method but analytical solution canbe obtained.

Abstract:In order to investigate the seismic performance of diaphragm-through joint betweencon-Crete-versedfilled square steel tubular column and steel beama quasi-static experiment under low re-cyclic load of one full-size T-shaped specimen of diaphragm through style beam-columnjoints was designed.with the hysteretic hoops acquired from the experiment, the skeletoncurvesofspecimen and the equivalent viscosity coefficient, with which the energy dissipation of the joint maybe weighted, were calculated.The failure process and feature of the specimen were described andductility, energy dissipation were analyzed.By using ANSYSence of the seismic performance by the thickness of protrusionthis paper discussed the influ-of the diaphragm and the strength of theconcrete core.Based on above all, we can get a conclusion that the diaphragm-through style beam-column joint have a higher bearing capacity and good ductility, energy dissipation capacity and hasa strong seismic performance.

Abstract:The seismic response of subway station and the tunnel joint structure in soft soil area inTianjin city were researched by using the finite element analysis software of ANSYS.Taking HepingRoad subway station for example, 3 D calculation model was established and time-history analysiswas carried out.The focal point of stress on the joint structure was found out and the interaction influ-ence between the tunnel and the station were analyzed.The results show that, firstly, horizontal andvertical direction seismic waves will affect the principal stress of the station and the joint structure.Secondly, horizontal seismic mainly has influence on horizontal displacement in the joint sectional.Vertical seismic dominates the vertical displacement.The earthquake makes the vertical displacementgreater than horizontal displacement.

Abstract:The three-dimensional finite element simulating and its results of the horizontal and verti-cal displacement of the top, the side, the underside of metro and downlink tunnels were carried out bythe ABAQUS finite element simulation analysis software .The results show that there are obviouseffects of foundation pit excavation on underground existing tunnels and the vertical displacement ofthe tunnel locating in the central position of the foundation pit and the horizontal displacement of thetunnel locating in the edge position of the foundation pit are relatively large.What's more, the verticaldisplacement of the top is larger than the side and the underside of the same tunnel and the horizontaldisplacement of the side are larger than the top and the underside of the same tunnel.In the effect ofexcavation unloading, the deformation of tunnel performance that the vertical diameter increases andthe horizontal diameter decreases.We should pay more attention to the foundation pit excavation loca-ting above the existing tunnel.

Abstract:Based on the engineering examples, the detailed calculation and analysis on the role offoundation deformation with large-scale preloading were carried out and compared with the deforma-tion of composite foundation treatment.The results showed that the influence depth of foundation de-formation under the large-scale preloading was large, and exceed the influence depth of conventionalload depth;compared with the composite foundation, the deformation of foundation under large-scale preloading was 25 times more than composite foundation;the negative skin friction should beconsidered in influence depth range under large-scale preloading.

Abstract:The method of orthogonal design can be used in asphalt concrete mix design.The resultsshow that the orthogonal experimental design can be achieved with the number of nine test groups to i-dentify indicators to meet the design requirements when the cast asphalt concrete mix design is carriedout and the significant influence factors and the level of this test can be found by analysis of varianceand range analysis

Abstract:In order to identify whether the cracks were caused by non-uniformity settlement, this the-sis describes and analyses different crack types caused by non-uniformity settlement that caused bydifferent reasons.And the method to prevent foundation settlement and the reinforcement measures ofthe upper structure are described in this paper.This thesis has some technical guidance significanceto prevent non-uniformity settlement and to reinforce the upper structure.

Abstract:The Tsui slope of Houxi River Hydropower is a concrete faced rockfill dam, Being filled inlarge-scale compaction tests have been carried out.To point against the dam compaction of spreadingthickness of the dam materials, the way of the material paved, rolled several times, rolling speed, theamount of the adding water and other construction parameters in different reclamation area, based on alarge number of real and effective the test data, we used the method of mathematical statistics and EX-CEL chart analysis to analysis test data and to detenn the reasonable construction parameters.Throughthe test data analysis the anthor puts forward the reasonable filling construction parameters and qualitycontrol index, and the conpaction test results can be used for reference of similar projects.

Abstract:There were great difference between actual results of Shijiazhuang deep foundation pres-tressed anchor and theoretical calculations results, the retaining structure monitoring results an under-ground garage pile-anchor were analyzed.Montitoring results show that the loss prestressed bolt loc-king force is great by using of Native craft methods; the locked stable rally general is only 100kN, which is 1/2 to 1/3 of the original design value.The growth of rally is not obvious according to thelong-term observation results.This paper greatly reduces the loss of the locking force through the ap-propriate technology and construction tools.

Abstract:The steady heat transmission is the basic form in architectural thermal engineering.It usu-ally can be worked out by calculation.This article introduces the graphic method based on the charac-teristic of equivalent heat flow intensity q.It is a line in the heat resistance-temperature cord, whichcan be used to solve problems.Through the examples, the graphic method has theoretical basis, a-cute result, visualized figure and strong feasibility.

Abstract:Based on the theory of holistic regionalism, features of"Jiageng Builing" in Xiamen Uni-versity were studied in terms of general plan, exterior facade, interior space and material details.Firstly, the paper analyzed how it mixed the Westen-style with local stone culture in 1920's;Sec-ondly, the paper studied how it mixed the Westen-style and Southeast Asian-Style with local red-brick culture in 1950'x; Finally, the paper developed how it created new building by the proper man-agements of the relationship among the contemporary architectural system and the traditional-"Jia-geng Builing" specialties since 1990'x.The results would provide theoretical support and reference forthe contemporary regional architecture development.

Abstract:There are great difference between Chinese and Western classical garden building.This ar-title mainly analyses their own features through the types, locations, functions, the quantity and den-sity in the garden, creators, materials, structure, form, size, color, texture, the source and the posi-tion and so on.Then the reasons for the differences are explored from the aesthetic consciousness, theway of thinking and the living environment.In the end, the essence of the differences between Chi-nese and western classical garden building is put forward-separate natural environment.

Abstract:Semiotics is cultural histories of the concentrated essence, vernacular architecture is an im-portant parts of Chinese traditional architecture its symbols pass its ideological content and culturalconnotation.The specific symbol which reflects the people's way of life, living environment, life cul-ture, is formed in a certain period of time and region.By using the western theory of semiotics, Nan-thong Tin pa hall form and its connotation are studied from the local construction of the status quo andthe two analyses are combined organically.The results have important historical, artistic and scientificvalue for vernacular architecture, exquisite cultural value excavation, reveal and show.The resultsindicate that semiotics has practical signification for protection and excavation native architecture cul-ture and could provide some enlightenment for the architect.

Abstract:Taking an example of Qingyang city, which is a city in the northeast of Gansu Province, weapply Thiessen Polygons method to calculate the surface precipitation by combining the weights of therainfall site, then use the AutoCAD 2008 software to make artificial meshes and apply the ArcGIS 9.3 software to make automatic meshes.At the same time, the calculation result of the surface precipita-tion could be compared with the traditional method that calculate the average rainfall value of all rain-fall site.Based on the results of surface precipitation, we make some relevant analysis on this paper, such as considering the results influenced by the numbers of the rainfall site, the human being's sub-jectivity factors on the aspect of the grid meshing, and the precision of the method.The results of thestudy show that, the surface precipitation calculation result, which based on the Thiessen Polygonmethod, is more close to the real rainfall, what's more, both the numbers of rainfall sites and gridmeshing are the important factor that affects the calculation results.

Abstract:To do quantitative evaluation of the geo-environmental carrying capacity and the pressureof coal mine through analytic hierarchy process, thus four factors such as geology geomorphology, }ov-er properties, hydrogeology and structural interface, will be chosen as the criterion layer of cariyingcapacity;land pressure, coal pressure and hydraulic pressure will be selected to be as the criterionlayer of pressure, arid the key factors included in the criterion layer will be regarded as evaluation in-dex system of indicator layer establishment.The indicator layer is assigned by using standard quattti-zation and rise semi-trapezoid distribution function;otherwise, the eigenvalue method will be usedto evaluate all the weight value of the indicator layer trough normalization processing.The carrying in-dex and pressure index are used to work out evaluation score by weighted computing layer by layerwhich aims at target layer.Taking Yunjialing mine for an example, the quantitative evaluation of thegeo-environmental carrying capacity and the pressure of coal mine are established by applying the e-valuation index system, the result turned out that the capacity is the higher capacity, the pressure isthe medium pressure, and the condition of the geo-environment of mine is good.

Abstract:According to the main characteristics of soft rock in rock broken, joints development andweak cohesion of level, this thesis insist that soft rock is instability, irregular deformation after blas-ting by analyzing the disturbing influence on soft rock, the back break of grotto and the deformation, sloughing even collapse of natural arch during the tunnel drive.It optimizes blasting parameters bymaking experience and the serious of monitoring measurement which under the strictly controlling onthe precision of drilling, the density of hole-line, the spacing layout of drill-hole and the chargingstructure.Based on that, the thesis proposes the blasting scheme for soft rock basing on the many ex-periment and continuous monitoring measurement after cavern forming.

Abstract:As the determination for the cycle of the overhaul depends on experience now, the determi-nation cant meet the safety and economical requirements.Risk analysis technology was used in thedecision making in order to realize the scientific decision.The risk identification technology was usedto find the key parts of operation.Combining with the characteristics of the overhaul, the model ofprobability of failure and the loss cost were proposed.In the end, the decision-making model depen-ding onagementthe least CER was established.The results can be used as the theoretical basis for the man-of cycle decision.

Abstract:Taking the power of 3 M W wind turbine growth box for example, the analysis-simple mod-e1 of the basic components of the carrier and gear has been established in PRO/E, and the three-di-mensional finite element contact model is generated in the ANSYS, on the premise of meshing, load-ing and Solving of the model, obtaining the elastic deformation under rated loads data, The resultshows that:stress concentration is found in the planet carrier under the rated load and is mainly in thepower input shaft part of the planet carrier, and the maximum displacement is found in the drive shaftpart under the role of the load, and the maximum stress of the basic planetary gear drive componentsby analysis calculation and checked drawn is less than the material yield limit, meeting the strength ofthe material.Key words:

Abstract:Taking the3-UPU/UPU parallel mechanism as an example, the structure and kinematics a-nalysis were analyzed and the Jacobian matrix of the mechanism was obtained; the parallel mechanismof local stiffness matrix and the global stiffness matrix were calculated under static equilibrium condi-tion; the local stiffness curve and global stiffness curve of 3-UPU/UPU parallel mechanism were ob-tained by the use of mathematical software MATLAB.The effect of variation of upper and lower planecircle radius on the local stiffness and global stiffness were analyzed.The results show that local stiff-ness matrix and the global stiffness depend on body posture.The variation range mechanism of localstiffness and global stiffness could be gotten for a given position;the upper and lower surface radius var-iation of body affects on the local stiffness and the global stiffness.So that high rigidity of the local andglobal stiffness can be obtained by increasing appropriately the radius of the upper and lower surfaces.

Abstract:Taking lifting-lug of hydrostatic test device as a research object, the physical model of lift-ing lug has been established by the Pro/E, and static analysis and topology optimization have beenmade by ANSYS workbench.On the premise of safe and reliable working, reduced model of liftinglug, which quality is reduced by 30%, obtained from topology optimization.Parametric modeling ofthe reduced model has been made by ANSYS workbench and further optimization design has beendone fo reduce 30% of the deformation.Furthermore, this design fills the gaps in the field of designand research of parts and accessories of hydrostatic test device.

Abstract:Magnetic Bearing has the advantages of no friction, high-speed, high precision, withoutlubrication, it becomes one of the bearing directions of the development of high-speed or ultra-high-speed rotary mechanism.According to the electromagnetic induction theory and automatic controltheory, this paper designed and developed a five-dimensional control of magnetic bearing device andits control system, and successfully conducted in the laboratory many times as a long time suspendedrotating.And on the basis of the static magnetic characteristics and dynamic magnetic performancetest, the magnetic bearings suspended and closed-loop control system were analyzed, the resultsshow that the magnetic bearings and its closed-loop control system can successfully 9kg weight shaftsuspended in the air as high-speed rotation, the results provide theoretical and practical basis for itspractical application.

Abstract:The global properties of a two-degree-of-freedom impact system under certain parame-ters were studied in the thesis.This research discovered the phenomenon of coexistence of attractors.Predicated on the cell-mapping theory, further researches on this phenomenon were conducted withthe method of step-changing technique.The results worked out the periodic solutions in certain in-terval analysis, as well as its attraction basin on the poincare cross section, verifying the effectivenessof the application of cell-mapping theory in this twovide theoriesKey words:for optimum design of impact system of-degree-of-freedom impact system, and pro-mechanics.

Abstract:Because of the low learning efficiency and easy missing into the local minimum missing, when we use the BP neural network for the motive target tracking, it will influence the accuracy of thetracking algorithm.In order to improve tracking accuracy of BP neural network model, a trackingmodel was presented based on combined Adaboost algorithm and BP neural network.The Adaboost al-gorithm multiple BP neural network of weak classifier formed a strong classifier tracking model.Theefficiency of the proposed tracking model was proved by tracking of moving objects in the video.Thepractical application proves that the BP_ Adaboost algorithm can realize the accurate tracking of mov-ing objects and greatly improve the robustness of tracking algorithm.

Abstract:To settle the defects that the repetitive and redundant information returned by meta searchengine leads to increase the burden of result display agent and reduce the precision, a meta search en-gine system model based on mufti-agent is brought forward.The importance degree of membersearch engines to a particular query comprehensively is measured, in the aspects of member Agent'scrawling capability, the relevance between retrieve documents and certain query, and response timeduring query.Then the importance degrees of member search engines are ordered by descend, so asto select several member search engines with higher importance degree to dispatch and merge.It hasproved through the experimental comparison that compared to the traditional meta search engine, theintelligent meta search engine based on reward mechanism improves the retrieval efficiency and queryperformance to a certain extent.

Abstract:This paper introduces the design of a software receiver for Ll-band civilian GPS applica-tions.An RF front end is designed with MAX2769.Using the RF front end, the real GPS satellite da-to are collected and converted to IF signal.Then through acquisition and tracking for the signal, wecan get the relative pseudorange between the satellite and receiver, which is used to calculate the po-sition of the receiver.