Applied Mechanics and Materials Vols. 71-78

Abstract: With the rapid development of construction industry,accident occurs frequently,and significant social effect caused by construction safety accidents has been increased in China.Then the establishment and promotion of safe and civilized construction system has become one of the important tasks of the party and the government in which the items of safety measurement and the temporary facility settings were regulated.As one of the comprehensive measurements,safe and civilized construction has been functioned and the rate of construction safety accidents has decreased steadily.Therefore,based on the implementation of safe and civilized construction at presant,combining with Regulation of Safety Protection of Construction Projects and Measure Fee of Civilized Construction and the national implementation of every province,the paper analyzed problem of the system of safe and civilized construction, proposed three monitoring measures which included the fee of safe and civilized construction,the technical standardizaition and management system of safe and civilized construction.

Abstract: Underground space for disaster prevention is a key component of urban disaster prevention system. The study applied GIS technology, established an indicator system and a comprehensive assessment model for site selection of urban underground space for disaster prevention. The result of the study, which is on the basis of GIS data collection and model principle, provided quantitative foundation for disaster prevention planning of underground space, and also helped to improve planning management and decision making.

Abstract: Rainfall infiltration is currently one of the important factors in studying the soil-slope stability. By using saturated-unsaturated seepage theory, the traditional limit equilibrium method and so on, analyze the water content and the pore-water pressure changes under the rainfall condition, then analyze the influence mechanism of the slope stability. Through the Seep/W and the Slope/W of the GEO-Slope software, do the numerical simulation of the slope stability under the rainfall condition, to seek the distribution of pore-water pressure on the rainfall situation and the influence of the seepage field from various parameters such as rainfall intensity and the soil permeability coefficient, thus to study the slope stability.

Abstract: An effective and general model — projection pursuit clustering model is proposed in this paper. It can solve the incompatible problems of indexes of safety evaluation，which are uncertain，fuzzy and complex. At the same time, it improves the recognition rate of the coal mine safety evaluation model. It uses genetic algorithms to find optimal solutions for the model, the information of which can be used to research the influence of all the indexes on the evaluation of coal mine safety. The paper clusters the safety level of each coal mine according to each projection value, which provides the objective basis for decision-making of the evaluation of coal mine safety. This paper combining with the example demonstrates operation process. It also proves the method is scientific and feasible, which is of significance of coal mine safety evaluation.

Abstract: The rigid frame of some material storage was analyzed by the nonlinearity finite element method. The intensity and stability of the rigid frame acted by out side load and support settlement are calculated. The theory and suggestion are given for designing, reinforcing and maintaining the structure.

Abstract: Starting with the two key factors of road breadth and the distance to intersections, the present paper analyzed the constraints of road conditions on setting curb parking lots and, by analyzing the influencing mechanism of curb parking on traffic capacity, constructed the compensation model of traffic capacity for motor vehicles on the parking road sections. Then, the paper went on to set the values of compensation coefficients for road breadth, vehicles in parking in and driving out, non-motor vehicles, and lateral clearance, so as to calculate, with the precondition of guaranteeing certain service standards, the maximal values of curb parking lots on road sections under the constraints of traffic capacity. In addition, it also constructed the driving speed model according to BRP resistance function and, via the analysis of “Friction” effect and “Blocking” effect of curb parking on traffic flows of motor vehicle lanes, measured the influence of curb parking on driving speed in order to exactly determine of maximal parking value under the condition that the minimal driving speed of motor vehicles can be ensured. Finally, for the purpose of finding the balance between dynamic and static traffic and of maximally utilizing the remaining road resources, the maximal number of curb parking lots shall be the minimal value to satisfy the constraints of road conditions, traffic capacity and driving speed.

Abstract: Several toll road corridors were surveyed for route choice behavior study and the structural equation model was used to analyze the route choice behavior influenced by the factors of vehicle type, vehicle ownership, trip purpose, trip distance, trip time and cost. The results suggest that vehicle type, vehicle ownership and trip distance can all have impacts on the route choice behaviors, and the influences of the trip distance and the vehicle type on the route choice behaviors are the largest.

Abstract: Compress Experiment result shows that the unsaturated Malan loess has strong structure, the structure strength is linear decreasing with the increasing of water content, and the character of stress-strain relationship is soften type. Although the relationship can be described by hyperbolic function, it is difficult to decide the residual strength in function. Based on the hypothesis of damaging to rigidity degree, when damage developing function is introduced to unsaturated loess, the soften type relationship of stress-strain can be described by a linear constitutive Equation with damage variation. Analyzing and comparing the research result shows the soften type stress-strain relationship can be described well by the constitutive function with damage.

Abstract: This study on the settlement preservation has dual themes of ensuring the continuation of the architectural history and culture, and emphasizing on the needs of contemporary living space. We survey to understand what spaces has been changed when the dwellers lived their traditional shop-house for contemporary life. The intention is to set up a suitable way for settlement preservation on the view of the dwellers. We study these transformations on the traditional shop-houses of the Sheen-None street, Wu-tiao Gang, in Tainan city, Taiwan. The results indicate that preservation projects proposals should make a balance between preservation and alteration in the future.The north shop-houses preserve the first hall to the second hall, and the third hall could be rebuilt, and satisfy the needs of the architectural renewal. The south shop-houses preserve the first hall to the first atrium, and the second hall could be rebuilt, and satisfy the needs of the architectural renewal.

Abstract: This paper on the urban preservation has dual themes to discuss that preserve the value of the architectural culture, and satisfy the needs of the architectural renewal. The intention is to set up a suitable way for the urban preservation on the view of the dwellers. Therefore, we should be allowed to renew the part of the traditional shop-house on the needs of contemporary life-style, but also have to preserve a minimal space for the historical characters. From the case study on the traditional shop-houses of Sheen-None street, Wu-tiao Gang, in Tainan city, Taiwan. We survey to understand what spaces the dwellers transfer, when they live in their traditional shop-houses for contemporary lifestyle. And we use the information to work out the minimal preservation space by “volume control”. In conclusion, the minimal preservation space is “the first hall and the first atrium”, but it also needs to keep the use of the first floor and the second floor of the second hall, so these total spaces could be sufficient for a household living.