ZHONG Ji-tao , HE Li-li , GAO Rui-zhen , ZHANG Jing-jun
2009, 26(4):1-3,12.
Abstract:Cable-stayed truss with triangular cross-section has been adopted in this paper.It has great unloading effect and is more reasonable when bearing loads.The cable-stayed space truss model was built by ANSYS10.0 software.The analysis is performed for vertical displacements of nodes after applying various prestressing force to stayed cables.Then the vertical displacements of nodes are fitted by MATLAB7.0 software and the curve-fitting polynomials are obtained,which overcomes the disadvantage that only nodal analysis was performed before.The analysis results show that applying prestressing force to stayed cables can control the vertical displacements well.
2009, 26(4):4-7.
Abstract:Based on the available computational method of the pile-soil stress ratio,the research simplified the distribution rules and patterns of the pile skin friction for composite foundation with rigid foundation,and derived the calculation formula for settlement of the composite ground from the mindlin displacement solution.The applied case shows that the settlement calculation formula is rational and effective,and provides a new way to calculate the settlement of composite foundation.
LI Ming-dong , CHENG Zu-feng , DU Xi-gang , YIN Lei
2009, 26(4):8-12.
Abstract:This paper analyzises the relationship between the compressive strength material ratio and the age of concrete respectively,and discusses the bearing capacity impected by the material properties of the pile through the experiments on materials mechanical properties of CFG pile composed of Grade Ⅲa large dosage of fly ash concrete.The results show that the efficiency of the compressive strength increases with the gel decreasing,and the compressive strength could still meet the design requirements when the replacement rate of fly ash cement is more than 40%;with the increasement of the age,all type and some certain cementation efficiency of the specimen compressive strength are improved significantly.
2009, 26(4):13-16.
Abstract:This paper analyzes the phenomenon of bridge collapse in earthquake,and introduces the bridge collapse preventing equipments in Japanese bridge aseismic in view of the domestic present standard.To the system's design concept,the constituent part and the choice flow has been given key explanation.
2009, 26(4):17-19.
Abstract:A mathematical model for numerical simulating the temperature distribution in reheating furnace of hot rolling process is developed by using FEM method.The heat transfer boundary condition of slab is determined by Furnace black box testing,while the validity of the numerical simulation is verified by using the black box testing experimental data.The results indicate that raising the temperatures of preheating section and the slab initial could shorten the slab heating time,guarantee the final quality of slab and improve the reheating furnaces productivity.
2009, 26(4):20-23,39.
Abstract:In the form of a variety of urban space,the main roles of space types are very clear,and theories that are also very rich.While as too much attention has been paid to the perfection of outdoor space,there is no ordered system of urban space.Therefore,this paper tries to improve the disordered space system with another connective harmonic space,on the basis of the existing theory of the main space.
2009, 26(4):24-26.
Abstract:Sculpture,which is the most ancient art of mankind,has a long history combination with landscape architecture.The background of sculpture park in western countries is reviewed,and its development process at home and abroad is sorted out.The construction methods of sculpture park are divided into 3 types. The design features on space,topography,roads and planting are also summarized,which provides reference for the construction of sculpture park in China.
2009, 26(4):27-31.
Abstract:The pedestrian mall has been brought in many cities for economy development along with drawbacks,such as simple form,disordered distribution.This paper reviews the course of the plan for pedestrian mall in old street of Ankang's new town,explains the the necessity and feasibility of the regional culture melting into the plan for pedestrian mall in old street,by investigating,analysing,comparingand combining the investigated fruits.This paper points out that It is feasible and important to design with regional culture,concludes its manner and method,and discusses the success experience of activity and vitality of pedestrian mall.
ZHANG Sheng , YUAN Hui , JIANG Xiao-hao , WANG Guo-wei
2009, 26(4):32-35.
Abstract:Membrane bioreactor technology was used to treat the different salinity of domestic sewage under the conditions of CODMn of 47.4~112.4 mg·L-1,NH3-N of 27.5~49.7 mg·L-1,TN of 35.2~57.1 mg·L-1,pH of 6.0~8.0,DO of 2.8~6.2 mg·L-1,MLSS of 5880~6823 mg·L-1,temperature of 20~27 ℃.The results show that average removal rate of CODMn is 88.1%,85.1%,84.0%,respectively,average removal rate of NH3-N is 91.9%,90.6%,89.7%,and average removal rate of TN is 47.1%,41.1%,35.7% respectively,when the salinity of the sewage is 0.5%,1.0% and 1.5%,respectively. Under the same salinity,the items monitored first decrease and then show a stable trend after the rise.On the whole,the removal rate of COD,NH3-N,TN and MLSS all decline with salinity increasing.The extracellular polymeric substance(EPS) excreted by microorganisms under the high salinity conditions is mainly responsible for membrane fouling.
BAI Feng-qing , LI Chong , YANG Meng-meng , ZHENG Jian
2009, 26(4):36-39.
Abstract:According to the pollution situation of Fuyang river,this paper proposes a set of technology integration system about pollution synergetic control,and ecological restoration technology of Fuyang River.The system includes sewage treatment plants,artificial wetland and eco-channel.Constructed wetland technology and sewage treatment plants are used to implement the top control of pollution sources and reduce pollution possibility,which is caused by the source and non-point pollutant accumulation.Through the use of the ecological floating bed and ecological embankment technologies,ecological river course was built to reduce pollution caused by internal contamination in Fuyang River.It accelerated ecological restoration of structure and the function of Fuyang River while controlling pollution source,and ultimately actualized fundamental improvement of the water quality.
2009, 26(4):40-44.
Abstract:To avoid the flood secondary disasters caused by the earthquake,the department which has the task of flood forecasting set up emergency flood forecasting scheme to provide scientific basis for earthquake relief in earthquake-prone areas.A method of forecasting emergency flood in earthquake areas is provided in the paper.The logistic equations of each kind of emergency rainfall station and area rainfall are set up by dividing the basic classes in the method.The computation method of acquiring time-area rainfall is also deduced.Combined with the available experience forecasting project,the method could implement flood forecasting to satisfy the earthquake relief in earthquake areas.The method does not depend on the rainfall information in all rainfall stations and could solve the problems of lacking of observation data in disaster areas effectively.The application example shows the forecasting result of the method is satisfactory.
XIAO Wei , LI Qing-xue , WU Wei
2009, 26(4):45-48.
Abstract:By monitoring the operation effects of a wastewater treatment plant in Handan,it was found that the removal rate of nitrogen was low and the effluent water was not up to the national standard for wastewater discharge.According to the result of the nitrogen removal,the research analyzed the distributional variation characteristics of dissolved oxygen(DO),mixed liquor suspended solids(MLSS) and the flow velocity at normal running conditions.The results show that the leading cause of the bad nitrogen removal is the deficiency of DO,which can not form the aerobic region;high concentration sludge directly reduces the concentration of dissolved oxygen and low flow velocity affects the delivering of dissolved oxygen.Therefore,controlling of sludge age effectively and strengthening the mixed impetus are the keys to improve the nitrogen removal.
WANG Hai-feng , LI Chun-yan , ZHANG Hai , HAN Fu-lian
2009, 26(4):49-51.
Abstract:As the groundwater has been over-exploited seriously in the Zhang-Fu river irrigation area,it is urgent to achieve a rational resource allocation and optimize irrigation scheduling.This research divided the irrigation area into 3 parts according to the water-supply source,Jensen model was secleted as the moisture content production function,and the two-dimensional dynamic optimized model of sole crop irrigation scheduling were established.The way of saving water resources by optimizing irrigation scheduling is feasible to relieve the conflict between the shortage of water resources and crop production.
2009, 26(4):52-55.
Abstract:This paper introduces the definition of windows thermal shield system,and gives typical assembled windows thermal shield system combination.In contrast with several assembled windows thermal shield system,the intuitionistic data about the reflection ability of solar radiation and indoor thermal environment influence was gained.The reasons and transformation current indoor thermal environment the condition of obturation in round-the-clock could also be available through analyse of these data from the experiment.At last,some advice of improve indoor thermal environment were given.
2009, 26(4):56-60.
Abstract:The formation mechanism,crystal structure and application of illite-smectite mixed-layer mineral(I/S) were introduced in detail,based on the previous research.Six kinds of transformation models from smectite to illite were proposed and the advantages and disadvantages of the several models were analysed.The calculation methods of mixed-layer ratio in I/S and their scope of application were detailedly summarized.The I/S's application in the field of geology and research results were described in detail.Finally,two problems await to further research on I/S mixed layer mineral were pointed out.
2009, 26(4):61-66,70.
Abstract:The formation,transformation and preservation of Dongsheng sandstonetype uranium deposit is the combined action of the organic and inorganic fluid,in these processes there are a number of recognizable epigenetic alterated signs.Researches on the characteristics of stable isotopes in these fluid products could date from types,characteristics and nature of fluid,which provides a theoretical basis for deposit causes and mineral prospecting.This research main selects carbon and oxygen isotopes in calcite in calcified wood and sulfur isotopes in pyrite in sandstone.The carbon and oxygen isotopes analysis showes that the formation of lenticular carbonate and calcified wood and carbon source are relate to the fluid action of organic matter;Sulfur isotope analysis indicates that sulfur source has the characteristic between the biological bacteria and coal.According to the former researches on the carbonate hydrogen and oxygen isotope and fluid physical-chemical parameters,the paper presents an opinion that the formation of Dongsheng deposit is the result of combined fluid action by atmospheric precipitation-dissipation hydrocarbon-coal organic acid-low-temperature hydrothermal.
LI Yan-heng , SUN Yu-zhuang , ZHAO Cun-liang , MENG Zhi-qiang
2009, 26(4):67-70.
Abstract:It can be found that uranium correlates with the organic matter in many sandstone-type uranium deposits.This research studies the sandstone-type uranium deposit in Dongsheng area of Ordors Basin,and tries to ascertain the role of organic matter in concent rating uranium.This study primarily illustrates that there is a close relationship between uranium metallogenesis and organic matter,which is significant for studying the reasons of sandstone-type uranium deposit and predict of the formation of the mine.
WANG Xiao-hua , WANG Shu-dong , HU hao
2009, 26(4):71-75.
Abstract:Studies on feature space of bands or their reconstructed vectors of remote sensing data are the basis of remote sensing model in Tarim river basin.This paper studies the characterization between Ts-NDVI,Ts-Albedo,Abedo-NDVI and vegetation index in their feature spaces of underlying surface in the Tarim river basin,and analyzes its physical and ecological significance.Some rules are found in these points distribution of some feature spaces,which could provide foundation for the ground object information extraction and lay the groundwork for the further researches of remote sensing.
YANG Yong-chen , YIN Bo , GAO Yong-ge
2009, 26(4):76-78.
Abstract:Basing on theory of coal spontaneous combustion,this paper analyzes the coal spontaneous combustion occurrence zone in fully mechanized caving face,and puts forward the "U"-sharp-area of spontaneous combustion in gob.The three zones easy-combustion are redivided into strong permeate zone,weak permeate zone and suffocative zone according to the degree of strength of air flow.Moreover,a new concept "easy-firing area" is proposed on the basis of high-rate spontaneous combustion characteristic in the cross of "U"-sharp-area and weak permeate zone.Technical measures are given for fireproof in fully mechanized caving face in the future accordingly.
ZHAO jun-lou , ZHANG xiang-ling , ZHANG li-hua , CUI yan-kun
2009, 26(4):79-82.
Abstract:Based on the practical situation of Guantai mine,this research used numerical simulation method to analyze and studied the coal roadway with bolt-mesh-anchor support.The transforming rule of roadway under different support parameters was gained.The results show that the high level stress is the main factor to intensify roadway to deformation,which not only verifies reasonability of support parameters,but also predicts support effect.Therefore,theory evidence will be provided for optimizing support parameters.
WEI Fei , LI Hui , CHEN Yue-juan , ZHANG Jing-jun
2009, 26(4):83-86.
Abstract:This paper establishes a PIM framework based on AOP technology.The model for the traditional MDA was improved by dividing the MDA's PIM(platform independent model) into OPIM(Object Oriented Plat Form Independent Model) and APIM(Aspect Oriend Plat Form Independent Model).Then the bridge connection was built in each of OPIM and APIM,which could help to visit between the domains.
XIE Yan , WANG Yu-guo , MEN Gao-fu , HU Ming-zhe
2009, 26(4):87-91.
Abstract:Complex perovskites with general formula A(B′1/3B″2/3)O3and A(B′1/2B″1/2)O3 have been investigated to analyse the structure of B-site long-range order(LOR) and the effect of ordered structure on microwave dielectric loss.Ordering plays an important role in the dielectric loss.The dielectric loss decreases with the degree of LOR increasing.Moreover,methods to improve the degree of ordering such as sintering and chemical composition are discussed.Increasing the sintering temperature,reannealing at lower temperture and decreacing the cooling rate can effectively improve the degree of LOR.Besides,cation doping could also promote the formation of B-site ordered structure.
MENG Xiao-cai , QIN Shen-jun , LIANG Li-jing
2009, 26(4):92-95.
Abstract:In this paper,UV-Visible spectrometry was employed to study the ionization constant of scutellarin.The standard solution of series pH value were prepared and the absorbance was measured at suitable wavelenths.Then the ionization constant is obtained according to the change of absorbance.The first dissociation constant was 8.52 when 368 nm was selected as the analytical wave length;The second dissociation constant was determined to be 11.20 using 365 nm as the analytical wave length;The third dissociation constant was 12.56 using 326 nm.This way is proved to be simple,applicable and easily operated.
ZHANG Xue-dong , SHEN Gu-cheng , LI Jun
2009, 26(4):96-98.
Abstract:This paper presents a successful example of an 80 m reinforced concrete chimney by directional blasting method in a complex environment.Through the structural analysis of the chimney,strut principle was used to design parameters of blasting cut and the parallel closed network was used for stability and safety.The paper also introduces the directional blasting method of the chimney and safety protection measures to reduce vibration and the second touchdown in detail.After the blasting,the chimney crashed down by design,which provides a good example for the similar engineering.
ZHANG Zhan-lu , LIANG Lan-feng
2009, 26(4):99-102.
Abstract:On the basis of the new wooden barrel theory,the paper presents low efficient engagements of our country business project,and proposes the seamless integrated operation pattern by studying on the operation procedure and organization.In the operation procedure aspect,property management is introduced into earlier period and further emphasized different from the former plan way.In view of the fact that each stage of project involves different professional knowledge,the departments were designed which should be related in each stage and definition of their responsibility to realize the seamless process for the whole operation of project.
SUN Jin , MA Li , SHEN Bing , CAO Xiu-li
2009, 26(4):103-105.
Abstract:During the process of economic growth and regional economic development,it is always a central theme to coodinate the urbanization and industry structure adjustment.This paper builds up multivariate regression models between industrial structure and the percentage of urbanization,non-agriculture population, non-agricultural rate of industry and built-up area.The main impact factors and their influence coefficients are analysized.The paper also points out the problems during the urbanization of Handan,and puts forward some corresponding advises.
2009, 26(4):106-108,112.
Abstract:Opsut showed that,for any graph G,the competition number of G is less than or equal to the edge clique cover number of G in 1982.This paper constructs the edge clique cover of minimum size and give the edge clique cover number for the complete pentapartite graphs Kn,n,n,n,n where n≡1,5(mod6).Then the new bound for the competition number of Kn,n,n,n,n is given by the relation of the edge clique cover and the competition graph,which improve the result of Opsut on the bound for the competition number of Kn,n,n,n,n.
2009, 26(4):109-112.
Abstract:In this paper,restriction to the Hopf algebras with non-degenerate Killing form and the adjoint representations of finite dimensional Hopf algebras are discussed.Based on given bases,the adjoint actions of Hopf algebras on all simple modules are explicitly described,and the one to one correspondence between the regular modules and the adjoint modules of Hopf algebras are also investigated.