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Outlines the geotechnical material in civil engineering applications, geogrid of various mechanical properties were compared. Describes the principle of ultrasonic plastic welding for PET geogrid performance requirements, According to PET geogrid performance requirements and productivity, the welding line, the basic requirements of the belt is mainly studied through automatic mode and grille vertical...
In order to improve the adsorption capacity between polymer particles and abrasives in composite abrasive slurry, the adsorption characteristics of PDADMAC on BGF particles and changes of BGF particles' Zeta potential have been investigated. Two kinds of composite abrasive slurry were obtained with BGF particles before and after modified, and their polishing performance were studied by experiments...
Quantitative evaluation for estimating motor function is a prerequisite for clinical application of rehabilitation robot. The current clinical evaluations, such as Fugl-Meyer assessment, still have some deficiency. The study provided an innovative evaluation method, which contrasted the physiological character of impaired limb with the contralateral upper limb of post stroke hemiplegic patients, and...
In this paper the horizontal displacements of diaphragm wall, axial forces of steel struts and surface settlements for different stages in different zones are compared by analyzing the monitoring data of a deep subway station foundation pit support structure in Hangzhou. The results shows that the rate of deformation of the diaphragm wall increases during the excavation near the bottom of the foundation...
In some occasions where it is inconvenient for real-time data acquisition and storage, an off-line data memory is needed for data transmission, which calls for a larger storage capacity and data protection without electricity. Also it is supposed to be suitable for a variety of interfaces. In this paper, with USB interface and RS232 interface, we design a satisfying off-line data storage and transmission...
This paper explains how a disinfection quality model was started for the distribution system of Shanghai Pudong, China. It first explains how were found the bulk kinetics constants and displays the results. Then it explains how wall reaction constant was obtained based on pipe material and pipe age data. It also comments the quality of the results and proposes some way to enhance it. Afterwards it...
This paper studied the traditional villages with mountains and waters landscapes in southern China involving the conception of Functional Zoning. The villages could be divided into several zones according to different functions to help us understand the whole structure more clearly.
Potassium carbonate-promoted dechlorination of o-chlorophenol in supercritical water (SCW) has been studied. Results indicated that potassium carbonate could enhance the dechlorination of o-CP. Dechlorination selectivity increased significantly in the presence of potassium carbonate.
Seabed oil pipelines are kinds of complex material. During the maintenance and repair of Seabed oil pipelines which need cut off when they are breakage, and it is very difficult to complete the task with common underwater cutting ways. For cutting complex material and materials which have irregular form with diamond wire saw is a perfect technique. The paper gives an introduction of constitution and...
Application prospect of concrete curved bridges in China is described. The typical diseases of curved bridges in China are introduced. By ways of investigation and documents consultation five aspects are summed up which are considered to lead to the diseases happening. Based on the research status the action of a curved bridge under either prestress loads or temperature loads need a further study,...
There are many arch bridges in China, such as masonry arch bridges, two-way curved arch bridges and ribbed arch bridges. Many years later, these bridges appear diseases. This paper analysis the reasons of the diseases and proposes many methods to repair these arch bridges. The main diseases of masonry arch bridge are arch ring fracture, sidewall ballooning destruction and concrete decency. The main...
The efficiency of dust collection in an electrostatic precipitator is mainly determined by its electric operational parameters which depends on the design and arrangement of the corona and collecting electrodes. In this paper, experiments of fly ash purification are carried using the transverse plate ESP system (the laboratory scale transverse plate electrostatic precipitator self-designed). The influence...
Digital City is an integral part of Digital Earth, in this paper, we studied the problems of China's urban development has practical significance. In this article, we believe that to develop a wisdom digital city unified information platform is an effective way to improve the scientific planning, high level and efficient management of the urban development process; China has conditions and strength...
It is a trend that the big cities will develop underground transportation other than viaduct to solve city traffic problems. The underground expressway can bring more benefits, although it costs a lot. The indirect benefit costs are difficult to be determined in national economy evaluation model of underground projects, This paper mainly introduces the recognition method of project cost and benefit...
New Intelligent Layered regulating and testing system uses micro-motor source to regulating the size of opened Nozzle in the underground. it can be directly observed the downhole flow changes and judged the regulation purpose of real-time layer on the ground. The essential feature of the new system is that it can accomplish the testing and allocating operation simultaneously. This system doesn't influence...
The paper made a research on synergetic effect of dilute toluene decomposition using dielectric barrier discharge (DBD) plasma and photocatalysis. The effect of grounding electrodes, voltage, gas relative humidity and TiO2 photocatalyst on toluene removal was studied. The results indicated that the removal of toluene is greatly enhanced by photocatalysis, O3 concentration is efficiently eliminated...
Generally, the geometric non-linearity is ignored in numerical simulation, especially in some numerical simulation of concrete structure, but now it is confirmed by a large number of experiments that the response of the concrete structure under ultimate load depends both on material nonlinearity and geometric non-linearity. So in order to analyze the fracturing behavior of the structures under ultimate...
Based on the evidence theory, combing with gray correlation and information entropy theory, a new method is proposed for machinery fault diagnosis. Firstly, based on information entropy feature of machinery fault, it builds the standard feature vectors of fault diagnosis. Secondly, the Basic Probability Assignment Function (BPAF) of evidence is built by gray correlation theory, and then a space-time...
Traditionally, the type of ramps of interchange in urban road network was determined singularly. But in fact, there are many factors from the regional road network which can influence the selection decision-making, and on the other hand, the selection result influences the whole regional network operational efficiency not just the single interchange itself. So in this paper, a bi-level optimal model...
The nonlinear torsional vibration on rotor system driven by universal joint was studied considering both natural structure misalignment and actual error misalignment. Firstly, the equation with weakly nonlinear vibration was derived after analyzing the kinematic relation about driven shaft and driving shaft. Secondly, the periodic solution was obtained corresponding to principal resonance by multi-scale...
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