SHI San-yuan , GUO Wei-guang , CHEN Xin , ZHANG Xiao-yan
2008, 25(4):1-3.
Abstract:The rebound formula of the viscoelastic damper at any time is received through the anlysis of mechanical properties of viscoelastic damper.Relative displacement formula of differ-rigidity viscoelastic brace is deduced by using the model of three-differ-rigidity available.As well as the braces are applied into the high-level steel structure system.The result of finite element of systerm with viscoelastic damper illustrate that the ability of dissipative energy is remarkable.
WU Xiong-zhi , BAI Jin-jie , JIA Zhi-gang , LIANG Kai , ZHANG Xiao-yan
2008, 25(4):4-6.
Abstract:Bassed On filed measured date and calculated result about the top beam horizontal deformation of the anchor piles retaining structure in Handan.systematical analyses of their effective aspects of the defor· mation of top beam,the deformation and the level deformation distribution of top beam alonng with the excavation of the deep pit are studied in this paper.The deformation of the top beam will be increscent alonging with the excavation of the deep.However,the deformation of the top beam is differ on the diffirent test point.It is concluded that in design the time—space effect should be considered.
YANG Shu-biao , GUO Jin-wei , LI Rong-hua
2008, 25(4):7-9.
Abstract:It is a problem frequently occurred in seismic design to control the torsional response of irregular structure under earthquake action.Based on the viscoelastic damper principle,irregularly damping struc· ture with viscoelastic damper under earthquake action is analized by using finite element soft-wal℃ (SAP2000).The results show that the viscoelastic damper call control effectively the torsional deformation of the irregular structure under earthquake action.
JIANG Xin-pei , WANG Xiao-yan , LIU Li-na
2008, 25(4):10-13.
Abstract:The calculation method for section stiffness and mid-span deflection of pre-stressed capon fi- ber reinforcement concrete beam in the different stage was proposed; Calculation formula for average cracks distance and crack width were derived from the traditional reinfomxd concrete theories.Ihe calculated re- salts were compared with the test data, the results show that the value fr}n this simplified calculation for- mula is in good agreement with the experiment data.
2008, 25(4):14-16,32.
Abstract:The collapse induced by the buckling of compression steel members is severe in steel structures engineering.It is a new field to control the buckling of compression steel members and to increase its stability bearing capacity with the technology of active buckling control.Active control of buckling has a good prospect because of its explicit control mechanism and its well control effect.After the design idea of this technology was introduced,this paper analyzed the feasibility of buckling control of compression steel members.Then the related research progress of several typical buckling control methods and their applicability together with the outline of their design and analysis were represented in this paper.And lastly some issues further studied were put forward.
WANG Ji-bing , LIANG Jian-gong , QIN Rong
2008, 25(4):17-19.
Abstract:QR method is a new numerical method.The structural displacement function is deduced by ccording to the principles of QR method.And the proper material constitutive model is selected.QR method is introduced to the nonlinear analysis of reinforced concrete.The analysis program is designed by QR method.Some examples show that QR method is an economic and reliable analysis method.
GAO Yong-qiang , WANG Xiu-hong
2008, 25(4):20-24.
Abstract:The non-linear equations of motion,in which the static sag,bending rigidity as well as the geometric no-linearity is considered,are promoted.Several numeric examples of typical inclined cables are prosecuted by using L-P method and harmonic probing method.The results demonstrate that the frequency is related to the original force,the sag of cable,bending rigidity,inclined angle and the influnce of original force is the obviousest.
2008, 25(4):25-28.
Abstract:A numerical-simulation method is developed to calculate seismic reliabilities of structures subjected to non-stationary earthquake load with uncertain spectral density in this paper.First,the numerical solutions of the structural unconditional seismic reliability are given from Gauss's integration.Secondly,conditional seismic reliabilities in the numerical solutions at Gauss points are estimated by Monte Carlo simulations.Finally,the unconditional structural seismic reliabilities are calculated by combining the numerical solution and the obtained conditional reliabilities.Numerical results of a single-degree-of-freedom(SDOF) system are compared with that from the plain Monte Carlo simulation, which demonstrates the accuracy and efficiency of the numerical-simulation method.
YUAN Hong-sheng , CHANG Hai-qin , SHI San-yuan
2008, 25(4):29-32.
Abstract:In order to verify the basic theory of multi-type-pile composite foundation and effectiveness in practice,this paper presents the operating principle and analyses the performance of gravel-CFG-pile composite foundation based on engineering application.It is concluded that gravel-CFG-pile composite foundation can both enhance the bearing capacity of natural ground and repair earthquake liquefaction,and economical efficiency and environmental protection sex are also it's advantages.As with all things,the procedure shown here is helpful to design building in similar fields for architects.
TU Bing-xiong , JIA Zhi-gang , LIU Chun-xiao , Bai Jin-jie , LIANG Kai
2008, 25(4):33-36.
Abstract:The differencial equation as a variation of the axis stress of the soil nail was derived by the blance condition,according to the bearing characteristics of soil nailing,the interaction between nail and soil,and the mechanical model of the transmission of the soil nail internal stress with the shear-log theory.Then the transmission equation was solved due to the boundary condition and the discipline of the internal stress transmission was analyzed.When compared with the field tested result of the soil nailing project by writing the MATLAB programs,the anastomoses between the theory analysis and the field test was good and the feasibility of the model and analysis method are proved.The result contributed a instruction significance to the design and the analysis of internal stress of soil nail structure.
2008, 25(4):37-40.
Abstract:The main purpose of this thesis is to try to give a proper definition to traditional structure by using the published book and theories of modern civil engineering,particularly from the theories of mechanics to comprehend the traditional buildings,the purpose of the thesis is to try to define our traditional building structure as pole system but not frame work or trestle work after quoting traditional definition.Then,the thesis define traditional structure as a mix system which is composed both with pole and plank basing on the definition
LU Lan-ping , LI Yi-jie , ZhANG Zhong-da
2008, 25(4):41-44.
Abstract:This paper analyses the delaying discipline of vehicles in both directions along route.A mathematical model which can optimize the phase separation of the X-by-wire system is established.The phase separation is optimizd,the scope of duration and greenratio is given.The invalid duration and greenratio are avoided.
LI Si-min , TANG Feng-bing , YANG Xu-dong
2008, 25(4):45-48.
Abstract:Effluent of wastewater treatment plant was used as primary water.The removal efficiency of NH4+-N and its affecting factors had been studied through biological sand filter and quartz sand filter system.The results showed that water temperature was the most important factor,the higher temperature of the raw water,the higher removal rate of NH4+-N by biological sand filter;the higher NH4+-N density in primary water,the higher removal rate,and the change of NH4+-N density affected removal efficiency little by biological sand filter.Under the normal temperature,when the density of CODcr and NH4+N were both higher,CODcr density affected the removal efficiency of NH4+-N apparently by biological sand filter.The removal of NH4+-N by quartz sand filter was affected by the density of NH4+-N in the primary water.Biological sand filter is a better craft and its removal efficiency of NH4+-N is better than quartz sand filter in reclaimed water reuse engineering.The NH4+-N density in effluent is lower than 5mg/L,and the quality meets reuse water quality criteria.
LI Shu-wen , WANG Wen-jing , CUI Xin-ling , NI Zhi-yong , YANG Ji-sheng
2008, 25(4):49-52.
Abstract:The groundwater numerical simulation is important effective for resolving hydrogeological questions as tool of forecast and evaluation for groundwater resources.A hydrogeology conceptual model and hydrology geo-science numerical simulation model are proposed by according to hydrogeology condition of Cheng'an in Handan.The groundwater system is numerically simulating calculated and forecasted by using the internationally standard software Visual Mudflow.The groundwater level monitoring results could be fit with the calculation better.The results show that this method of modeling is rational and effective.So the vary of the level of groundwater in 2004 is forecasted after reducing exploitation.The Results provide a scientific basis for the evaluation and utilization of groundwater.
ZHOU Ji-hong , ZHAO Jun-guang , HAO Cai-lian , ZHANG Biao
2008, 25(4):53-55.
Abstract:Hydrogen sulfide is a kind of poisonous and harmful gas,and it will pollute atmosphere environment if exhaust it directly.There are a lot of desulfurization methods.The desulfurization experiment and reaction mechanism in which the activated carbon is soaked with zinc nitrate solution is researched on the basis of dry-desulfurization.The experimental results indicate the desulfurization efficiency of the desulfurizer of Load Zinc-Activated Carbon is better than that of the activated carbon,and the higher the high of the desulfurization agent is,the better the desulfurization efficiency is.The desulfurization mechanism have physical and chemical absorption.
SU Dong-yan , CUI Jun-hua , CHAO Cong , ZHANG Jian-hui , WANG Peining
2008, 25(4):56-60,64.
Abstract:In this paper the treatment and repairing technology of polluted river was summarized,which were physical,chemical and bioremediation technologies;physical techniques include artificial aeration,polluted watercourse flushing,sediment dredging;chemical techniques include chemical alga-killing,heavy-metal fixer;bioremediation techniques include microorganism str-engthen,plant strengthening,biofilm process.These techniques are briefly included and evaluated.The future developments of these technologies are prospected.
JIN Wen , QI Jing , ZHANG Wei-jie
2008, 25(4):61-64.
Abstract:Building thermal environment is influenced by design factors of architecture.Four affecting factors of architecture on building thermal environment are considered.The optimal combination of these four factors is obtained by CFD simulation and orthogonal experimental method in order to get a better natural building thermal environment with lower mean temperature and mean PMV.The results reveal that improving affecting factors of architecture helps to make better indoor thermal comfort.
KANG Li-gai , WANG Jing-gang , Liu Jie
2008, 25(4):65-68.
Abstract:It was proven that the heating way with low temperature water has many advantages through the comparison of the GSHP radiant floor heating system with PCM and other heating modes.Besides the floor radiant heating system with low water and electricity were also compared from the exergy consumption in this paper,it was demonstrated that the radiant floor heating with low temperature water is the optimum.Also the paper had analyzed the influences of water supply temperature,phase transition temperature and phase change radius,filling amount of PCM and coiled pipe spacing.The author compared this heating mode with the mordern heating modes with electricity from the economical aspects.The results show that its anhual operation cost is less then 1/3 of the heuting with electricity.
GU Yuan-yuan , JIAO Zhen-kuan , ZHU Hong-yu , WANG Xiao-yan
2008, 25(4):69-72.
Abstract:Aimming at the Ground water's excessively mined question which caused by the water shortage of Handan area,this article take the system analysis theory as the foundation to deploy the region multi-water sources in the light of the least uses of the underground water.We expect to realize coordinated development of society,economy,resources and environment's and make the water resources good use.This article analyze the actual problem and build up regional water resources network chart.The optimal deployment model of the region multi-water sources is established and the region supply and demand principal contradiction is also discovered simultaneously.The result may provide references for interrelated work.
ZHENG Bai-ping , XU Bo-hui , WANG Ming-zhen
2008, 25(4):73-76.
Abstract:Based on the analysis of the chemical composition,X-ray diffraction(XRD),infrared spectroscopy(IR),differential thermal analysis(DTA) and scanning electron microscopy(SEM),the characteristics of Handan bentonite were studied.The results show that the Handan bentonite is a typical Ca-bentonite,and its montmorillonite content is around 50%.Na-bentonite is successfully prepared by manual modification,and its characteristics is same with natural sodium bentonite
ZHAO Xin-zhuo , JIAO Yu-guo , YANG Ren-zhong , ZHAI Daiyan , ZHANG Ying
2008, 25(4):77-81.
Abstract:The exploitation and utilization of mineral resources have geological disasters,geological landscape destruction and water loss and soil erosion,as also as other geological environment problems of Tai'an City.The paper raised spraying with new soil and biological treatment to the damaged mountains,a landslide and other geological disasters is avoided.Dirt backfill and biological reclamation on the collapsed ground,the area occupied by dirt and tailings are reduced,it avoid the further development of desertification on the mining soil.These measures are popularized in Tai'an City mining area,which saves a lot of lands,greatly improves ecologic-environment quality in mining areas and gains well benefit of society,economy and environment.
ZHANG Ying , LIU Hui-de , HOU Xu-hui , ZHAO Xin-zhuo , JIA Xiang-xin
2008, 25(4):82-85.
Abstract:Mine hydrological geology is developed by using the technology of the geography information system.The ArcGIS Engine technology is used under this kind of situation which integrated the technology of ArcGIS Engine,the technology of COM,the technology of database and the corresponding programming language .It realized the function of the management of the data,the spatial analysis of the data and the forecast of the result.It has the important meaning to guide the mine production and the prevention of the mine disastrous.
SUN Yu , YAN Ming , QIN Xiu-ling
2008, 25(4):86-88.
Abstract:This paper introduces Leica HDS4500 three-dimensional laser scanning system and corresponding necessary software Cyclone Scan.The application of the system in geological engineering is elucidated by using factual examples.There is no doubt that Leica HDS4500 three-dimensional laser scanning system has largely potential application in engineering measuring and deformation monitoring in the field of civil engineering and geological engineering.
LANG Li-ying , ZHANG Xiao-fang , YANG Zhi-yong , LI Zhu-fang
2008, 25(4):89-91.
Abstract:In this paper,phase correlation algorithm based on FFT is applied to the bar code identification.It is a widely used method of image registration.It can increase speed of items recognition and robustness of the algorithm.There is the rotation-invariant phase correlation algorithm which combines polar coordinate transform with phase correlation.They can recognize the bar code which is partly destroyed or inversed in the process of moving.The paper provides the analysis and simulation for the algorithm using Matlab,it is proven that the algorithm has the advantages of good real-time and high performance.It improves the matching precision and reduces the calculation by optimizing the rotation-invariant phase correlation.
2008, 25(4):92-94.
Abstract:Basic composition of the system for on-line monitoring and fault diagnosis of automobile engine is introduced in the paper.The system takes such parameters as engine speed,oil pressure,cooling water temperature,fuel consumption,vibration and so on,as monitoring objects,real-time state monitoring of automobile engine is developed by automatic monitoring of these parameters and working state analysis.The results provide test platform for the state trend analysis and fault diagnosis of the engine.
BU Yi-feng , LU Xing-he , WANG Ya-quan
2008, 25(4):95-99.
Abstract:Silicalite-1 samples were synthesized by two hydrothermal methods and modified with ammonia solution under different temperature and length of time respectively.The characterization researched by XRD,FTIR indicated that ammonia solution could change the crystal form and silanol type on Silicalite-1.The results of vapor Beckmann rearrangement of cyclohexanone oxime indicated that nest silanol were the main active sites,but the crystal form was not related to the silanol type and catalytic performance.Ammonia solution treatment could also eliminate the side reaction site of terminal silanol group of Silicalite-1 so as to improve the Beckmann rearrangement performance.
2008, 25(4):100-102.
Abstract:In order to inspect the reliability level of the approximate wave function in molecular physics,we calculated the approximate wave function and the potential energy of the ground state of H2+.We studied the effect of approximate wave function of ground state of H2+ on its potential energy.We got accurate equilibrium position by comparing with RKR potential when z=1.23,but on higher vibrational levels z=1.16 is very well.
2008, 25(4):103-106.
Abstract:The simple and exact method for the determination of the six substances existing in the fermentation was founded by employing high performance liquid chromatography.The chromatographic separation was performed on Aminex HPX-87H with mobile phase of 0.05 mmol·L-1 of Sulfuric acid at a flow rate of 0.5 ml·min-1.Refractive index detector was chosen,and the column temperature was 15℃.In this seperation condition,a good linear relationship exits between the peak area of six substances and their concentrations with correlation coefficient ranging from 0.9991~1,and the recovery is form 99.34% to 101.11%.By the analyzing the samples,concentration of accessory production such as acetate,butyrate and the reactant glucose were entirely in a low level,meanwhile,the yields of the butanol,acetone and ethanol are close to the normal level.Suitable separation among the six substances were achieved,and the whole operation was consumed within 45 minutes.
2008, 25(4):107-109.
Abstract:An adaptive differential evolution algorithm is presented.It adjusts scale factor adaptively according to the computation process in order to preserve the diversity of population at the initial generation as well as to enhance the global searching ability and to improve local searching capacity and precision of solution finally.Experimental results show that the presented algorithm can avoid premature convergence effectively and enhance the global searching ability.
2008, 25(4):110-112.
Abstract:A definition of conditional entropy for discrete fuzzy variables is formulated based on credibility theory in order to measure the uncertainty of a fuzzy variable given.Its lower bound and upper bound are investigated.The sufficient and necessary condition for the upper bound that the conditional entropy for independent simple fuzzy variables takes is obtained.