ZHOU Shu-jing , YANG Bei-bei , CHENG Fang-meng , ZHENG Jian-ming
2012, 29(1):1-4.
Abstract:In view of the drawbacks that it is prone to the phenomenon of premature convergence andits local search ability is poor, the genetic algorithm was improved by 2 operations of the fish algo-rithm:the rear end behavior which can speed up the optimal and the cluster behavior which has anexcellent ability to jump out of the local extremum. Taking the gate-shaped frame for an example,the improved genetic algorithm was applied to the reliability analysis of the frame structures. The opti-mization model was established with the unit section area and the external load as the design variablesand the reliability indices as the objective function. The results of the optimization model calculatedby the JC method and the improved genetic algorithm were similar at the same checking point underdifferent loadings,but the improved genetic algorithm performed efficiently with less constraints.
LI Yan-cang , CHENG Fang-meng , YANG Bei-bei , ZHANG Xue-zhi
2012, 29(1):5-7,11.
Abstract:In view of the slow convergence and low accuracy of the artificial fish-swarm algorithm forthe optimal design of truss structures, the Logistic equation was used to initialize the fish group to im-prove the efficiency and quality of solution on the initial stage of the algorithm, and the inertia weight adjustment strategy of particle swarm optimization was used to adjust the artificial fish's vision and to step to raise the speed and accuracy of optimization in the process of operation. Then the improved ar-tificial fish-swarm algorithm was applied to the truss structural optimization,and the optimal design model was established with the section size of the truss as the design variable,the minimum structural weight of structure as the objective function. The Matlab was used for the optimization analysis of the model, and the result was compared with those of other algorithms. It is showed that the algorithm is improved in the convergence rate and searching precision and the effect is obvious especially on the initial stage.
TAN Yan-qiu , ZHEN Xiao-hui , SHI San-yuan
2012, 29(1):8-11.
Abstract:The model of square pyramid double-layer cylindrical lattice shell with 30 m span and 42m length was established for modal analysis and mechanical property analysis by use of the finite element analysis software SAP2000. The seismic response analysis of the shell structures was carried out with the bucking-restrained braces in different locations and different numbers under the EL-Centro wave. The results show that replacing some bars with the bucking-restrained braces in the double-layer cylindrical lattice shell could strengthen the damping effect. The replacement of the web mem-hers bearing more loads has a better damping effect than the replacement of other members, and the effect of replacing 48 web members is better than replacing 20 web members in the web-member re-placement scheme.
MENG Wen-qing , LIU Teng-fei , ZHANG Ya-peng , YANG Xiao-jing
2012, 29(1):12-14,18.
Abstract:A new type of pre-stress combinatorial frame structurew;15presented in this use of concrete composite board as the upper cord and the prestressed cable as the bottom chords. The de-tailed static analysis of the structure was made by the finite element analysis software of ANSYS. Research results showed that the closer the node vertical displacement to the center of the structure,the bigger the value was. Both the tensile stress and compressive stress appeared in composite board and web while the tensile stress in the cable and the bottom chords. The closer the rigging and pole for the bottom chords with the tensile stress to the center the bigger the value was. Both the displacement and extreme stress of the structure were higher than the requirement of the design and the regulation.
2012, 29(1):15-18.
Abstract:The complex high-rise building which is a large span steel-concrete composite has some plane and vertical irregular. So that this paper uses program SATWE,which is a part of structural analysis and design software PKPM,to analyze the seismic elastic of structural model and the seismic behavior of bending steel-concrete framework. The studies presented in this paper highlight the influence of the new standards to such structure's reinforcement configuration and the reasons for any changes etc.
WU Tian-he , GAO Yuan , WEI Xiu-xia
2012, 29(1):19-22.
Abstract:As the super high-rise hybrid structure buildings are very complex and construction cycleis generally long,so that the different construction scheme and load sequence of actual construction load have a great impact on the internal forces and deformation of structure members during the construction process. Combined with the erection project of Central Bank of Kuwait New Headquarters Building(CBK),which is the super high-rise hybrid structure building, simulation analysis of actual construction process was studied by one finite element analysis software. By comparing the analysis result data of two different construction scheme,the different change tendency of member stress and deformation during all the construction process can be confirmed. And the more reasonable construction scheme is applied to ensure the construction safety through the construction process of complex super high-rise building.
ZHANG Wen-ying , ZHAO Hui , WANG Jian-xiang
2012, 29(1):23-25.
Abstract:Considering that the componet of building may be affected by the secondary load when the building under initial load was reinforced in the practical project this paper used CFRP reinforcement method with high performance price ratio to strengthen the building. The numerical simulation analysis of reinforced frame beam was realized by using ANSYS software. The results show that strain along section height under different load levels consistent with the assumption of plane section and the displacement and deformation are in the control range,which can meet the need of engineering design. In this paper the construction operation method is given definitely which make the construction more clearer, more reasonable and well operation.
2012, 29(1):26-28.
Abstract:In this paper the process of evolution in the development of practice for construction projects has been basing on the studied. The dynamic changes of process of the construction projects were discussed by perspective of system theory and wisdom methodological framework for the dynamic constructron projects was established in order to provide a new forward idea for the development of con-structron projects.
ZHANG Zhen-hua , YANG Fang-rong
2012, 29(1):29-32.
Abstract:Academy is a unique educational institution in ancient China it has a great influence on our ancient culture education and the development of academic thought. Classical academy gardens are the product basing on the academy developed mature. On the basis of preliminary research and investigation on Dacheng Academy of Fugou,the paper researched its historical evolution and analyzed artistic characteristics of Dacheng Academy. The paper expounded the cultural connotations of the classical academy gardens and studied the influence of its founder-Cheng Hao's Philosophy thinking on Dacheng Academy and afterward times in order to carry forward the traditional academy gar-dens culture.
2012, 29(1):33-36,47.
Abstract:Based on the evolution of the urban business format, the green open space in the four businesses central area of Shanghai was analyzed,we got the conclusion that mixing of the green open space and the business space was one of the approaches to solve the problem of the construction of the central city area. Some design countermeasure including that stage of control regulation and the fusion the commercial land and green space must be remised in between structural elements and monomer element design. muse under consideration. Finally,innovation conformity way were proposed for the fusion design.
2012, 29(1):37-40.
Abstract:This research studied green building website's development process and the status quo and analyzed the problems existing in the sites building and some advices were given. By taking example,analogy,induction,statistical and other methods the features the main content the advantages and problems of green building web sites were analyzed in detail. Finally,the author pointed out the development direction of the China's green building websites.
2012, 29(1):41-43.
Abstract:This article starts with analyzing the principle of operation,components and advantages of photo conductive illumination and ventilation system. It focuses on a typical city in cold areas, and adopts the ways of questionnaires research,site survey and data analysis etc. the article investigates the details of the status and requirement of indoor environment, general applicability of the technique and economic benefits, then draws the conclusion that the photoconductive illumination and ventila-system is feasible in college teaching building.
2012, 29(1):44-47.
Abstract:Along with our country highway's development double arch tunnel construction technology for tunnel construction improve continously at high speed in the construction; taking two double archtunnel in Guilin for example, the author summarized longer connecting arch tunnel construction effec, the problems including the Earth Inclusion geology roof roof problems,analysis of anchor force principle were solved,and the traditional construction technology was also optimized; the construction of the double arch tunnel construction technology for further optimization and improvement had completed the whole set process development it could provide the reference for the later similar project construction.
WU Li-ming , WANG Dong , WANG Tao , SONG Sha
2012, 29(1):48-50.
Abstract:Bus rapid transit system has the advantages of safety,efficiency alleviating traffic jam and energy saving and emission reduction,however disputes often arise in the planning stage from many stakeholders and the citizens which will affect the bus rapid transit implementation processes and lead to imbalances between efficiency priority and fairness concurrent. It is urgently need to establish a good communication relationship between the subject and the object. Firstly based on the analysis of the purpose of public participation in bus rapid transit system planning this article presents the problems of the current public participation; then this paper analyzes the methods of public participation in terms of propaganda and communication; finally this paper clarifies the importance of public participation in bus rapid transit system planning in the case of Changzhou city.
LI Si-min , TANG Zhen-fang , ZHAO Jing-xiao , LI Chuan-long
2012, 29(1):51-54,61.
Abstract:When the water temperature was 16-22°C,the hydraulic load was 5 m3;/(m2·h) and the air-water ratio was 1 .5:1,the pollutants removal effects of the polluted lake water through the down-flow biological filter with the ceramisite,the activated carbon of 2 different particle sizes and the quartz of 2 different particle sizes were compared. The results show that the removal of CODMn,NH4+ -N and TN by activated carbon filters were higher than quartz sand filters and ceramsite filter and the purification efficiency of small particle filter was higher than that of the large particle filter. The average removal rates of turbidity CODMn,NH4+ -N and TN by small particle activated carbon filter were 84. 45 %,36. 82%,84. 55 % and 10. 19 %,respectively. The turbidity removal by quartz sandfilters was better than activated carbon filter and ceramsite filter and the removal efficiency of small particle was better than that of the large particle filter. The average removal rates of turbidity CODMn,NH4+ -N and TN by small particle quartz sand filter were 87. 91%,32. 43 %,78 . 25 % and8.46%,respectively. For the large particle diameter ceramsite filter had lower turbidity removaland the average removal rates on turbidity, CODMn,NH4+ -N and TN were75.63 %,35.79%,80.06% and 8. 85%,respectively.
ZHANG Lei-lei , MA Fa-shao , ZHANG Ning , CHENG Wei , DING Shu-li
2012, 29(1):55-57.
Abstract:The kaolinite clay was tested for removal of lead ions from aqueous solution. The samples were washed with sulfuric acid solution followed by chemical surface modification using KH580 and sodium hydroxide. X-ray fluoresence(XRF) results showed that the ratio of SiOZ/A1Z03 was 2.8:1for the treated sample compared to 1 .6:1 for the raw one. Different adsorption isotherm models were applied to the experimental data and found that Shawabkeh-Tutunji equation best fit these data adequately. It was also found that chemisorption took place at the surface of the modified kaolinite with maximum adsorption capacity of 54. 35 mg /g.
WANG Jing-gang , SHENG Hong , LIU yan-chao , YU Hai , ZHANG Chun-hua
2012, 29(1):58-61.
Abstract:Based on the theory of line-heat-resource,the soil comprehensive thermal conductivity coefficient and heat transfer rate of u-tube ground heat exchanger are tested and calculated in Zheng-ding of Shijiazhuang aera with the constraint optimization method and using the soil thermal physical instrument produced by the Hebei University of Engineering. According to the experiment results, the impact factors of time step,average temperature of inlet outlet u-tube ground heat exchanger and heating power on the heat transfer rate of u-tube ground heat exchanger were discussed. The results show that the comprehensive thermal conductivity of the soil tends to be stable after 20 hours; the comprehensive thermal conductivity of the soil the average temperature of inlet and outlet u-tube ground heat exchanger, and the heating power could influence the heat transfer rate of u- tube ground heat exchanger, and the influence would reduce successively.
2012, 29(1):62-65.
Abstract:The hydro-geological border recharge,runoff and excretion of the confined water in Hua-chi-Luohe formation in the Hetaoyu mine field were analyzed the hydro-geological characteristics of this confined water were studied,and the height of water flowing fractured zone and caving zone caused by coal exploitation were calculated. The results show that the confined aquifer group is with large thickness low cementation,huge hydraulic pressure and special hydro-geological characteris-tics; in some regions where the joints and cracks develop have large amount of water and become the main underground watercourse,which plays an important effect on the well digging and coal resources exploitation becoming the main source of mine water-filled for well construction and coal exploita-tron.
HAO Tian-ping , ZHANG Yang , WANG Zhi-long
2012, 29(1):66-69,73.
Abstract:The indecies were selected from four aspects including the utilization intensity investment intensity, economic and ecological benefits,and the model of the economical and intensive utilization of land resources were established. The principal component analysis was used to determine the specific evaluation index and the analytic hierarchy process was used to determine the weight of each in-dex. By means of the spatial analysis and computing capability of the GIS the economical and inten-live utilization of land resources were evaluated. The evaluated result was similar to the census result which showed that the evaluation model could be used to analyze the status of land utilization and pro-vide data support and decision criterion for the plan of land utilization.
2012, 29(1):70-73.
Abstract:Coal bed methane accumulation is significant impacted by groundwater dynamic field. In the eastern part of the study area the coal reservoir is buried in shallow,groundwater runoff effect is relatively strong and the dissipation of CBM is easy. In southwest of study area coal reservoir is bur-ied deeply groundwater runoff from northeast(shallow position) to southwest (position),which playa blocking role on upward diffusion of CBM. In this area the groundwater water level is low and ground water is in retention state,which is the favorable area of coal bed methane accumulation. The characteristics of groundwater chemistry also affect coalbed methane accumulation. The study shows that underground water retention area and high-salinity distribution is consistent this shows that eigher retention groundwater or weak force alternately groundwater are favorable hydrogeological condi-dons for coalbed methane accumulation reservoir.
XIE Qing , JIANG Kuan , GENG Jin-wei
2012, 29(1):74-76,89.
Abstract:Being relative to the types of the argillaceous rock,carbonatite has special oil and gas source conditions,such as good sedimentary environment rich and high organic sources,abundance indexes of the organic matter of it; organic carbon content (TOC) and chloroform bitumen "A”con-tent are relatively lower. And because the carbonatite does not contain or contains a spot of clay mate-rial, so the catalysis of clay material down't work for lots of hydrocarbon generation thus only car-bonatite is buried deeply enough to moderate temperature to generate hydrocarbon. The oil source po-tentiality was discussed from the oil generating condition including sedimentary environment, sourceand type of organic material, evaluating index and prompting function of organic hydrocarbon genera-tron.
ZHANG Chen , MIAO Jian-yu , SONG Hong-xia , WANG Jing-ru
2012, 29(1):77-80.
Abstract:X-ray diffraction,scanning electron microscopy and casting thin observation of 78 samples from Paleozoic reservoirs in the Huanghua Depression indicate that the main clay mineral are mainlyas follow illite,illite-smectite and there are a few authigenic kaolinite and chlorite and the clay min-eral appear as film-like style and bridge type. Illite content and I/S increase with depth inereasing, which lead to the decrease of permeability of reservoir pore. Three typical of the relationship between the mercury curves and clay minerals were obtained by taking pressured-mercury testing. The claymineral assemblages imply that this area's ancient environment was dry-salt lake; the regional dia-genetic environment were alkaline; the environment being close to oil reservoir showed individually al-kali-acid-alkali process.
2012, 29(1):81-84.
Abstract:The project schedule was made according to the ptimistic time,the intervals of mission du-ration in the mission list were quantified unascertainedly, the unascertained completion time and itsreliability and cumulative reliability were obtained by use of the addition operation of unascertained rational numbers. The buffer time was calculated by the optimistic construction period and total project period when completion reliability was 90%,then the project schedule of the critical chain was established. The case study shows that the project schedule of the critical chain made by the theory of un-ascertained rational number and ptimistic time can relieve the effect of uncertainties and save the construction period compared with the traditional schedule.
ZHANG Fu-ren , XU Xiu-mei , ZENG Xiao-yan
2012, 29(1):85-89.
Abstract:In order to reduce the casualties and damage caused by gas leakage,and to get the diffu-lion law of gas leakage,a system model is constructed and tested based on similarity theory. Multiple regression analysis of the diffusion law of gas leak with temperature,humidity and other factors coupled based on the concentration of different spatial points and the gas leakage rate of gas pipeline have been done. The gas leakage diffusion equation has been established and been verified through the test repeatedly on similarity theory and dimensional analysis. This result of research has a reliable theoretical basis to probable gas leakage prediction and emergency relief measures.
HUANG Wei-jian , XU Xue-gang , WANG Zhi-xuan
2012, 29(1):90-94.
Abstract:In view of the problem that current business-oriented water information management sys-tem obtain difficultly hidden information problem,the hydraulic engineering information management system was design based on data warehouse and OLAP technology. The Java served as the development language,SQL Server 2005 as back-end database,and the SQL Server data warehouse tools was used to build the data warehouse. According to requirements analysis the access channels,departments and funds were confirmed as the three implicit information which were implemented through the fact table and dimension table design with the efficient star query model as a conceptual model.
WU Bing-sheng , XU Rui , JIANG Jin-jun
2012, 29(1):95-99.
Abstract:The vibration signal of the mechanical rotor was decomposed by the EMD method, and the end effect produced was restrained through mirror extension. Then,several intrinsic mode functions which reflected the inherent variation characteristics and regulations of rotor fault signal were obtained. The AR models of each component were established , and the auto-regressive parameters the variance of remnant of the AR models were regarded as the fault feature vectors,and the SVM classifier was built to recognize the fault pattern. The results show that the rotor fault diagnosis based on mirror extension of EMD-SVM could obtain the accurate characteristics and status of the rotor fault system.
CUI Xin-tuo , XIA Liang-liang , XU Bo-hui
2012, 29(1):100-102.
Abstract:As open pit mine area is generally far away from the city and affected by transportation andother facts,so that the maintenance of equipment in the truck dispatch system is very inconvenient. The remote management and maintenance of the internal device were realized by the means of SSLVPN,which connected the remote network to the system of internal network. Doing these can not only be facilitated for management and reduce maintenance costs,but also meet the needs of the mobile of-fice.
YANG Ying-hua , WANG Lan-ming , WANG Jun-ying
2012, 29(1):103-106.
Abstract:Twelve varieties of apple trees have been introduced and planted at home and abroad for experimenting in view of the single variety,low yield and poor quality of middle-late mature apples in southern Hebei Province. The performance of the selected varieties in phenological phase,growth and fruiting habits as well as their fruit economic characters have been observed during 4 years of cultivation and management. The results show that the sprouting and flowering time of these varieties are very close to one another and their ripening periods are quite different; among them,such as 4 varieties as Changfu-2,Yanfu-10,New World,and Starkrimson could be introduced and planted as the main varieties of middle-late mature apples in southern Hebei Province,which have shown better comprehensive characters with the vigorously growing early bearing high rate of setting fruit, high yield and wide adaptability.
2012, 29(1):107-108,112.
Abstract:For any v even, we study the enumeration of(v,v/2+s)-odd graph for0≤s≤3.Combining with the decomposition of graph with p(l≤p≤6) vertices,we construct a new graph Ga1,a2,am constituted by star graphs ●a1,●a2,…,●amthrough the arrangement of degree array we propose the enumeration theorem of nonisomorphic(v,v/2+s)-odd graph according to different degree array.
2012, 29(1):109-112.
Abstract:The classic algorithm of analysis clustering basing on uncertain data is discussed. The re-search actuality and new progress in uncertain data clustering algorithm in recent years are summa-rued in this paper. First the analysis and induction of some representative uncertain data clustering algorithms have been made from several aspects,such as the ideas of algorithm,key technology, ad-vantage and disadvantage. Second,several typical density-based algorithms and known data sets areselected; experiments are implemented and comparing with the same clustering of the data set under different algorithms. The clustor analysis was given by basing on compareding uncertain data in this paper. The above work can give a valuable reference for management of uncertain data.