Abstract:A kind of self－centering steel frame beam－column joint is proposed. The characteristics of self－centering steel frame joint is that the interface between beam and column is able to open and close under seismic load, and the beam and column are connected by the channel steel and high strength bolts. Prestressed steel strand along the beam length direction is set to provide resilience. This paper uses Ansys to simulate the low cycle loading, and simulate the type of node trajectory under the action of earthquake motion. It is concluded that the seismic resistance of the frame beam－column joints is good through the analysis of M－θ_r and skeleton curve and the seismic performance for self－centering steel frame with web energy consumption is worth further study.

Abstract:The finite element model of the construction process of a large－span steel truss factory is established by using finite element analysis software MIDAS/GEN. The track simulation analysis was carried out during the construction process. The internal force and deformation of components of structural system under various operating conditions were obtained. The results show that the maximum internal force and deformation of components appear in the first working conditions in the process of ascension. The analysis results have some reference value for the implementation of the construction plan.

Abstract:With the purpose of studying the influence of permeable formwork liner to concrete surface and concrete strength, this paper analyzed the application of permeable formwork systematically through experiment. By comparing with the effect of common steel formwork supporting system, permeable formwork can improve the quality of concrete surface and the strength of concrete. Permeable formwork liner really has impact on improving the quality of engineering, durability, and the life of service, so that it has good prospect in application, and can be used in many kinds of concrete engineering.

Abstract:Inflatable membrane structures are large, the test process is dynamic and can't be realized by general measure methods. So it's more appropriate to obtain the test data through the method of photogrammetry. The coordinates of the measuring points in the membrane surface can be obtained by using photogrammetry principle, and the overall deformation of inflatable membrane structure can be simulated through the displacement of measuring points. Result of the test has the same trend with the theoretical results, so the test method and analysis of data processing in this paper has a certain reference value.

Abstract:Considering the variation of ground vertical permeability coefficient, the ground plane of sand equivalent permeability coefficient calculation method was presented. The field monitoring data were compared by using the Plaxis2D software. The variation form of settlement of soft base under the transition section of different soft foundation treatment were analyzed. At the same height of embankment the order of differential settlement after different treatment modalities in different transition section is as follow: sand compaction pile treatment, o rdinary sand processing and plastic drainage board, incrensingly. The results show that the transition section of soft foundation treatment scheme satisfies to the controlling criterion of differential settlements in Vietnam.

Abstract:Taking the Olympic Park station in Beijing 15 line as the project background, the dynamic simulation of the existing structure down－traversed by subway station is performed by 3D numerical model vs. site measurement. The results show that: the rate of upper small pilot tunnel excavation is 69.3% of the total surface subsidence, the upper small pilot tunnel excavation is a key step in the existing structure down－traversed by subway station of subsurface excavation station; The suggestion measures are advanced grouting, short footage and tough supporting; crown beam on pile and steel－pipe column applied timely; the maximum surface subsidence is located at the station midline, the range of influence is 40 m at the station both sides; after the subsurface excavation completed, The maximum vertical displacement of the structure of existing tunnel is 11.06 mm and is meet the requirement of Technical code of maintenance for city bridge.

Abstract:This paper relies on the foundation pit of the project of public green space and underground space in the bund in Shanghai, and uses Plaxis analytical system of finite fractile with Hardening soil small－strain model, and builts adjacent foundation pit model. The horizontal deformation of the foundation pit caused by the different construction sequence was studied. And the results showed that the effect of maximum horizontal displacement of foundation caused by the construction sequence is small. The effect caused by the first construction of foundation while excavation is shallow is bigger.

Abstract:The overall structure of main bridge of steel truss of Weifang Bailang River Bridge was analyzed by using the Midas2013 software. It is assumed that all unit adopts steel truss beam element structure form, all bar is consolidation form, work materials is among the linear elastic range, the principle of small deformation and the superposition principle is used. The research results show that the stability coefficient of truss bridge structure is 30 and this structure has high reliability.

Abstract:The new Bituminous Road Design standard (JTG D50－2013) will begin to implement. This revision mainly have five contents, including investigation methods of axle load spectrum and traffic parameters, design parameters of pavement and subgrade materials, indexs of pavement design, subgrade humidity and terminology. In this paper, the above aspects are compared with the original standard, and the reasons of the revision are analyzed in detail. The results show that new standard become more practical and secure than the old one and have higher quality.

Abstract:The phrase of ecological architecture isn't new anymore in nowadays. However, during its practical processes, some pseudo－ecological architecture separated from environment or insisted on technology first is found. In order to prevent such phenomenon from happening again, it is advocated that contemporary architects should start from the origin of architectures at the beginning of their designs, and authors try to make them root in the place, the scenery and the environment for the current time organically by taking spirit of place of the bases to whose architectures belonging as the starting point of their designs as well as using bottom－up conceived logics, so as to make people, architectures, and environment mix together essentially and organically.

Abstract:Combined with the historical information during different periods of development in Anyang city, the historical dynasties space under the changes was analyzed, the extremely important factors in the history of environmental on urban development was extracted. By according to the needs of modern urban development of Anyang city, the importance of urban history of environmental protection was discussed to guide the protection of cultural heritage and distinctive regional development of the urban city. Anyang plays a prominent role and has high historical value, but the economic development is relatively backward. In the process of urban economic and social development, we should focus on the protection of historical environment, balance the contradictions between development and protection, and plan the routes of development through the revival of the city's historical development environment.

Abstract:Natural room temperature of model building has been simulated by Dest software on BIM platform. Orthogonal experiment method is introduced, and data channels between the natural room temperature parameters and architectural design parameters are established. Selection and optimization of architectural design parameters can be accomplished based on natural room temperature parameters on the purpose of making the objective building energy efficient. Corresponding building cooling load can be calculated based on the simulated hourly natural room temperature.

Abstract:The text aims at the heat pump technology renovation project, combining with the characteristic of heat pump technology renovation project, heat pump technology renovation project of energy quantization method is proposed based on studying “section, energy measurement and verification technology”(GB/T28750－2012),. And the feasibility of this method is verified by examples. This kind of project is verified when the energy quantization factors affecting energy consumption will be dispatched to the same conditions, in order to make scientific and reasonable evaluation on the energy saving, this paper will promote third party classes for the heat pump technology renovation project section energy audit and energy saving energy contract management project validation provides the scientific method.

Abstract:For the system of Lithium Bromide Absorption Heat Pump(LBAHP), parameters that affect the performance of LBAHP are researched in the process of thermodynamic cycle, including the pressure of driving heat source, the temperatures of inlet and outlet cooling water, and refrigerant water temperature. The overall COP of the system under different operating conditions is calculated by control variable. Accordingly, COP would be changed when the above four parameters is converted, the calculation results indicated that COP is increased with the rising of the pressure of driving heat source and refrigerant water temperature, while COP decreased as the temperatures of inlet and outlet cooling water went up.

Abstract:Three kinds of modified bentonite adsorbent were made by use of sulfuric acid, hydrochloric acid, and phosphoric acid. The effects of the modified bentonite dosage, initial ion concentration, pH value of solution, temperature and stirring time on the removal rate of copper ions were studied. The results showed that the adsorption rate of copper was 99%, 96%, 92% respectively, by using of bentonite adsorbent modified with sulfuric acid, hydrochloric acid and phosphoric acid reached at the condition of initial concentration of copper ion of 3 mg/L, acid modified bentonite addition amount of 2.5 g/L, pH 12, temperature of solution 20 ℃, stirring time of 15 min.

Abstract:The leaching condition of Li from fly ash has been studied in this paper, which includes analyzing the influence of leaching rate of lithium from the size of baked material particle, the concentration of leaching liquid, the temperature in the leaching process, the dosage of the leaching liquid. The result indicates that the leaching rate of lithium can reach 70% in the following conditions: the baked material of fly ash is grinded into fine particle first and then continue to be grinded into paste with water before leaching the paste with solution of 5% sodium carbonate (fly ash: solution of sodium carbonate = 1: 100) and heat it 2h on 140 ℃. At last, leachate will be obtained after filtering.

Abstract:The disturbance of overlaying strata, causing the water flowing fractured zone run through the aquifer, makes the accident between water－inrushing and rock－crushing happen from time to time. In order to reveal the development law of water flowing fractured zone, the combination of influencing factors which have been analyzed for the water flowing fractured zone is established, and then the different situation for the development of the water flowing fractured zone with different factors is discussed with the UDEC. The results showed that both the distance from the key stratum to the confined aquifer and the position of the key stratum influence the development of the water flowing fractured zone best. The arrangement of the factors for the water flowing fractured zone are the distance from the key stratum to the forth aquifer, the position of the key stratum, the breaking span of the key stratum and the interval of the key stratum which is orderly from the best to the worst.

Abstract:By studying the phenomenon that calorific value increases with the particle size reduction of coal Gangue by crushing in different ways, the paper analyzes the relationship between particle size and calorific－value distribution of crushed coal gangue. The results show that calorific－value of different size fractions redistribute with granularity changes, presented negative correlation; while the calorific value of fine－grained level increases by more than 1 times than coarse fraction, the results could provide the technological base of crushing and separation of coal gangue.

Abstract:By using the theory of geology and gas geology and combining exploration and mine production, sampling experiments, field measurement and a large underground coal wall observations and other information, the main factors affecting the 3^# coal seam gas in Xinjing coal mine was studied. The results showed that the degree of metamorphism and coal－bearing sedimentary rock environment of 3^# coal seam gas provides a good "life" as "reservoir" condition for gas; and mine field sturcture, coal cap, the hydrogeological characteristics of 3^# coal seam gas provides a favorable preservation conditions, coupling relationship between the main factors that have joint control of its occurrence rule. The results help to improve the relevance and effectiveness of mine gas prevention and control.

Abstract:Based on the geological investigations, formation conditions and features are studied for the debris flow, Then the dynamic parameters such as bulk density, discharge, velocity and transported sediment scale are calculated. The results showed that the debris flow hazard in Darui country belonged to intermediate frequency ranstorm type debris flow. Based on debris flow hazard features and local social, economic situation as well as need of ecological construction, preventive countermeasures for the debris flow hazards being anti bolcking binding are presented.

Abstract:The different kinds of circulating fluid bed (CFB) fly ashes from Yuguang gangue－fried power plant in Shanxi Province were studied. According to the different thermal systems and methods of desulfurization of CFB boiler, CFB fly ashes could be divided into 3 types: high temperature and high calcium type (F1), low temperature and low calcium type (F2) and low temperature and high calcium type (XF2). The properties of different kinds of CFB ashes were investigated based on X－ray diffraction, water demand ratio, activity index and compatibility with admixtures. The results show that the number of crystal species of F1 is the most, but the content of amorphous state is the lest; Three types of CFB fly ashes that have not been grinded have high water demand ratio and low activity index, the water demand ratio can be 100% when the specific surface area of fly ash is 600m²/kg; The order of activity index is: XF2 > F2 > F1, and the activity index of F2 and XF2 can be higher than 95%. The conformability between 3 types CFB fly ashes and super plasticizers is well, but the conformability is bad with naphthalene water reducer.

Abstract:In order to improve the performance of Hadoop, the paper proposed a new scheduling algorithm based on particle swarm optimization. In this paper, the position of particles represent feasible resource scheduling scheme, the cloud computing task completion time and resource load balancing were taken as the objective function, the optimal resource scheduling scheme was obtained by the particle swarm optimization algorithm. The experimental results show that this algorithm can well balanced resource load and reduce the task completion time and effectively improve the performance of the Hadoop platform.

Abstract:In view of the traditional method of extracting skeleton process cumbersome, complex, the paper presents an interaction method of partial skeleton extraction for three－dimensional mesh model. Firstly, it extracts facets and vertexes for the partial of the three－dimensional mesh model; It makes the geometric cross－sections on the feature points and the aliquot angle; Then, the paper calculated the intersecting lines and skeleton points; It achieves the accurate extraction of a partial skeleton model and is simple. The paper presents some partial skeleton extraction instances, which is proved to be a method for the effective and the feasibility.

Abstract:According to the curtain wall industry development planning and design current state, a variety of mechanical models was analyzed; authors advise that the multi－span articulated beam mechanical model should be chosen as far as possible design of vertical column structure according to the reality situation; the mechanical model of the multi－span hinged beam should be selected as main method during the calculation, the proportion of the cantilevered beam and the simply supported beam should be adjusted, which could make wall engineering achieve the better economic benefit.

Abstract:M sequence has good pseudo－random characteristics, but its linear complexity is not high and the nonlinearity is zero. So the application fields of m sequence are limited. Adopting the B－M algorithm this paper gives the studies of the linear complexity of m subsequences which are constructed. We get conclusion that the linear complexity of m sequence is bigger than m subsequences', approaching the half of the sequence's length. The nonlinearity of the m subsequence is analyzed using the Walsh spectrum technology. The simulation and the calculation results show that the nonlinearity of m subsequence has made a lot of improvement compared with the m sequence, and can be widely used in flow password, channel coding, spread spectrum communication, etc.

Abstract:this paper used the niche particle swarm optimization (NPSO) global search ability to optimize the spread parameter of GRNN, which improved the general regression neural network (GRNN) performance; then a urban domestic water demand predictive model was established by basing on NPSO－GRNN. The results showed that NPSO－GRNN fitting and prediction average relative absolute error of Beijing domestic water demand data between 1988 and 2012 were 0.72% and 0.36%, respectively, the fitting and predicted results were lower than the result of BP neural network algorithm. NPSO－GRNN algorithm can be better fitting to the trend of urban domestic water demand in Beijing City, it has higher prediction accuracy and generalization ability.

Abstract:This paper assess a power plant boiler in Yunnan based on the feature of power plant boiler. Considering some factors including man, machine and environment management, Fuzzy Comprehensive Evaluation Method was used to establish comprehensive evaluation system of power plant boiler. the weight value of each index was determined by using AHP, and the expert group was established to comprehensive evaluate of the system power plant boiler. The weighted average principle was used to get the final results of the evaluation. Studies shown that application of fuzzy comprehensive evaluation method in power plant boiler could improve the scientific and practical of safety evaluation.

Abstract:Considering the impact on the engineering construction scheme evaluation from risk attitudes, and uncertainty and complexity in decision－making environments, grey target evaluation method for engineering construction scheme was proposed by basing on prospect theory. Firstly, the linear transformation operator with the features of the“rewarding good and punishing bad”was used to standardize the original decision－making matrix. Second, the positive and negative clouts was determined, the positive and negative clouts coefficient were taken as a reference point to solve the prospect value function. The nonlinear planning model for the maximum of comprehensive prospect value of each engineering construction scheme was established. Then the optimum weight vector is solved and the order of each engineering construction scheme is determined. Finally, a city rebuilt the city main road construction scheme evaluation was taken as a example for analysis, and the evaluation results were in according with actual situation.

Abstract:In this paper, we discuss the boundness of positive solutions of a Logistic partial differential equations on R^N with varying power. We use the sliding method and comparison principles to reach the conclusion which the uniqueness of the positive solution of this kind of equation is based on.