Applied Mechanics and Materials Vol. 662

Abstract: This paper introduces the concept of the contract whole lifecycle management into the architecture construction contract management, and puts forward the whole process dynamic management. Based on the traditional architecture construction contract management, this paper divides all the stages of construction contract lifecycle and makes the boundary of the whole process more clear. Through research the work content of the whole lifecycle management of construction contract, so as to determine the key work of construction contract management .That can make the architecture construction contract management more systematic and persistence.

Abstract: Lahars are commonly destructive volcanic hazards on composite volcanoes. Tianchi volcano is a composite volcano with potential lahar hazards threats. We studied the geological characteristics, properties, hydromechanics and genesis of lahars in the Erdaobai River Basin and evaluated their hazards through field geological mapping, maximum grain-size measurement of debris and pumice, and grain–size analysis.

Abstract: Electrodeposition method was applied to recover copper from the simulation of copper-containing electroplating wastewater. Stainless steel plate is used as the cathode and the anode is made of titanium plate coated with RnO2+IrO2, titanium mesh coated with RnO2+IrO2 or stainless steel plate. The electrode potential of copper in electrolyte was calculated, and the effect of initial concentration of copper ions, temperature of electrolyte, voltage, electrode spacing, initial pH value and additive concentration on the recovery of copper was studied in detail. The experimental results showed that the proper anode is titanium plate coated with RnO2+IrO2.Under the condition ofinitial concentration of copper ions 25g/L, temperature of electrolyte 40°C, voltage 3.8V, electrode spacing 25mm, initial pH value 3.60, additive concentration 7.1g/L,the recovery rate of copper can achieve 99.4% and the current efficiency can achieve 88.5%.

Abstract: On the project background of the large-scale thin-walled cylindrical shells of a practical desulphurizing absorption tower, the investigations are conducted into the buckling mode and buckling capacity of the large-scale thin-walled cylindrical shells under wind loading by nonlinear finite element methods. In the buckling path, it firstly presents the buckling mode similar to that of the stocky cylinder under uniform external radial compression. In the post-buckling stage, the snap-through takes place, the buckling mode turns to being similar to the axial compressive buckling mode of the medium-height cylinder that horizontal buckles occur in the upper half of the front area. The buckling capacity of the cylindrical shells of desulphurizing tower is some more than the linear elastic buckling pressure of the cylinder under uniform radial pressure.

Abstract: The characteristics of nitrate nitrogen leaching in soil under different irrigation levels were studied by soil column simulation experiment with numerical simulation done using LEACHM model taking nitrate nitrogen leaching under different irrigation levels as the research background. In sandy soils, an irrigation amount of 300 mm would cause nitrate nitrogen to leach downward 75~150 cm, with a leaching amount of 10~30.7 kg/ha; and an irrigation amount of 700 mm would make nitrate nitrogen leach downward about 3.5 m, with a leaching amount of 98 kg/ha. Research data showed that the amount of nitrate nitrogen leaching was positively correlated with the irrigation intensity level, irrigation level directly determined the amount of nitrate nitrogen leaching, and influenced its leaching depth.

Abstract: The optimization design method was rarely used to design the gravity buttress of arch dam in the past. With this in mind, the parametric description of gravity buttress is given, and the auto-calculation of its exerting loads and the safety coefficient of anti-slide stability are realized subsequently. Then, the optimization design model of gravity buttress and the procedures of optimization design are presented using the asynchronous particle swarm optimization method. Finally, ODGB software, which is short for Optimization Design of Gravity Buttress software, is developed and verified.

Abstract: The report carries the information about test results of loading reinforced of steel geogrid layer of gravel on sandy foundation . As a result we have deformation characteristics of gravel layer on sandy foundation, the effect of reinforcement and deformation regularities of reinforced gravel-sandy structures.

Abstract: The soil shear wave velocity is the key parameter in site seismic response analysis. And it is also one of the important parameters in evaluation of seismic safety for engineering sites or the seismic microzonation. Normally, the parameter is obtained through the field testing. Sometimes shear wave velocity testing could not arrive at technical requirement or the technical requirements due to the actual condition. Then it is necessary to develop the parameter inferring method. In this paper, the data of shear wave velocity of soils at 46 typical boreholes in Dongying are selected for regressive statistic analysis. Based on the data, the formulas of shear wave velocity with linear function and power function are obtained. Considering the influence of the soil classification to the soil shear wave velocity, the new inferring formulas are obtained. Then the inferring formulas of the shear wave velocity are applied at 4 boreholes in one residential building. It is shown that the calculation results conform well with the site testing results, and the formulas are applicable for engineering with sufficient accuracy.

Abstract: Despite the high-speed development since Reform and Opening up, China has payed the price on environment. Guided with the strategy of sustainable development and ecological civilization concept, China’s environmental protection tax, which is considered as an effective way to improve environment , has been proposed to legislation.In the information age, information processing is widely used to explore the nature of economic life. information processing to environmental protection legislation designed to deal with environmental taxes and the effective implementation of great significance, and the Environmental Kuznets Curve (The Environmental Kuznets Curve) is devoted to the analysis of economic data and the development of environmental pollution data relations between simulation, this article will deal with the meaning of information processing in China's environmental protection issues related to tax under the perspective of EKC to explore.

Abstract: When using numerical simulation method for solving fluid flow and heat transfer problems, need to follow the basic equations. Each control equations generally use common form of expression, build a wall collision effects on indoor thermal environment situation jet and jet corner collision of two jets in the form of physical models under its numerical simulation were studied in the form of three jets collide.